CN107228152B - Shock absorber packing gland, damper and its inflation method - Google Patents
Shock absorber packing gland, damper and its inflation method Download PDFInfo
- Publication number
- CN107228152B CN107228152B CN201610177539.3A CN201610177539A CN107228152B CN 107228152 B CN107228152 B CN 107228152B CN 201610177539 A CN201610177539 A CN 201610177539A CN 107228152 B CN107228152 B CN 107228152B
- Authority
- CN
- China
- Prior art keywords
- lip
- damper
- piston rod
- oil sealing
- toroidal cavity
- 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.)
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Classifications
-
- 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
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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
- F16F9/362—Combination of sealing and guide arrangements for piston rods
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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
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
- F16F9/432—Filling or drainage arrangements, e.g. for supply of gas via piston rod sealing or guiding means
Abstract
The invention discloses a kind of shock absorber packing gland, damper and its inflation methods.The damper includes piston rod (10) and the oil sealing (20) being set on the piston rod, oil sealing includes the skeleton (21) and seal rubber body (22) being combined with each other, seal rubber body has main lip (221) and secondary lip (222), the axial plane of main lip and secondary lip and piston rod limits toroidal cavity (23) jointly, aeration aperture (223) are offered on seal rubber body, which extends to toroidal cavity on the outside of oil sealing.Due to offering aeration aperture on seal rubber body, when being inflated to damper, nitrogen can be filled in toroidal cavity via aeration aperture, be gradually increased the air pressure in toroidal cavity, until main lip is strutted, so that nitrogen be made to enter the inside of oil sealing.The higher piston rod axial plane of precision will not be caused to damage in this way in gas replenishment process, so that the case where avoiding the occurrence of gas leakage oil leak, extends the service life of damper.
Description
Technical field
The present invention relates to vehicle shock absorber fields, and in particular, to a kind of shock absorber packing gland, further relate to a kind of damper and
Its inflation method.
Background technique
In order to improve the flatness and comfort of running car, the vibration of vehicle frame and vehicle body is set to decay rapidly, generally
Damper is equipped on automobile suspension system.As the sealing element in damper, shock absorber packing gland usually by metallic framework and
Seal rubber body composition.What is mainly sealed on seal rubber body is main lip and secondary lip, wherein main lip is for preventing
The only hydraulic fluid leak in work cylinder barrel；For preventing, the foreign matters such as extraneous dust, gravel from entering oil sealing to secondary lip and piston rod is matched
The position of conjunction.
In damper production process, need to be filled with a certain amount of nitrogen to the inside of it.Traditional oscillating damper inflation method
For contact pin type aeration, that is, contact pin is inserted between oil sealing pair lip and piston rod first, then in closed inflator module
It is middle that nitrogen is filled in cylinder barrel.This inflation method has the following deficiencies: that 1, contact pin can cause to damage to the axial plane of piston rod, drop
The cooperation precision of low piston rod and oil sealing, cause to leak air oil leak situations such as；2, after inflation, when inflator module is opened
When, high pressure nitrogen can go out contact pin, lead to contact pin loss or the waste in working hour.
Summary of the invention
In order to solve the problems in the existing technology, according to an aspect of the present invention, a kind of damper is provided, including
Piston rod and the oil sealing being set on the piston rod, the oil sealing includes the skeleton and seal rubber body being combined with each other, described close
The main lip and secondary lip that envelope rubber bodies are engaged with the axial plane with the piston rod, the main lip and secondary lip and institute
The axial plane for stating piston rod limits toroidal cavity jointly, which is characterized in that offers aeration aperture on the seal rubber body, this is filled
Stomata extends to the toroidal cavity on the outside of the oil sealing.
Optionally, the first spring ring is provided on the outside of the main lip.
Optionally, the aeration aperture is provided on the secondary lip.
Optionally, second spring circle is provided on the outside of the secondary lip, the aeration aperture is located at the root of the secondary lip
Between portion and the second spring circle.
Optionally, the aperture of the aeration aperture is 0.5-1.3mm.
In damper of the invention, due to offering aeration aperture on seal rubber body, carried out to above-mentioned damper
When inflation, nitrogen can be filled in toroidal cavity via aeration aperture, be gradually increased the air pressure in toroidal cavity, until will lead
Lip struts, so that nitrogen be made to enter the inside of oil sealing.It in this way, will not be to the higher work of precision in gas replenishment process
Stopper rod axial plane causes to damage, so that the case where avoiding the occurrence of gas leakage oil leak, extends the service life of damper.
According to another aspect of the present invention, a kind of shock absorber packing gland is provided, which is vibration damping as described above
The oil sealing in device.
In accordance with a further aspect of the present invention, a kind of inflation method of damper is provided, the damper include piston rod and
The oil sealing being set on the piston rod, the oil sealing include the skeleton and seal rubber body being combined with each other, the seal rubber body
The main lip and secondary lip, the main lip and secondary lip that are engaged with the axial plane with the piston rod and the piston rod
Axial plane limit toroidal cavity jointly, the inflation method includes: first step, opens up inflation on the seal rubber body
Hole makes the aeration aperture extend to the toroidal cavity on the outside of the oil sealing；Second step, by nitrogen via the aeration aperture
It is filled in the toroidal cavity, increases the air pressure in the toroidal cavity to strut the main lip, to make the nitrogen
Gas enters the inside of the oil sealing.
Optionally, in the second step, nitrogen is filled with institute via the aeration aperture using oscillating damper inflation tooling
It states in toroidal cavity.
Optionally, the first spring ring is provided on the outside of the main lip.
Optionally, the aeration aperture is provided on the secondary lip.
Optionally, second spring circle is provided on the outside of the secondary lip, the aeration aperture is located at the root of the secondary lip
Between portion and the second spring circle.
Optionally, the aperture of the aeration aperture is 0.5-1.3mm.
Inflation method of the invention can substitute traditional contact pin type aeration, and will not be to precision in gas replenishment process
Higher piston rod axial plane causes to damage, so that the case where avoiding the occurrence of gas leakage oil leak, extends the service life of damper.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of partial sectional view of the damper of embodiment according to the present invention；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is a kind of partial sectional view of the shock absorber packing gland of embodiment according to the present invention；
Fig. 4 is the schematic diagram using oscillating damper inflation tooling to oscillating damper inflation, wherein inflator module is in open shape
State.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " inside and outside " is for damper sheet
For body, refer to that, close to the side at damper center, outside refers to the side far from damper center on the inside of each component.
As shown in Figure 1 to Figure 3, according to an aspect of the present invention, a kind of damper, including store oil cylinder barrel 50, work are provided
Make cylinder barrel 40, piston rod 10 and the oil sealing 20 and guide way 30 being set on the piston rod 10, store oil cylinder barrel 50 and is set in work
Make the outside of cylinder barrel 40, oil sealing 20 and guide way 30 are located at one end of work cylinder barrel 40 and guide way 30 is located at the interior of oil sealing 20
Side.When inflation, the nitrogen that 20 inside of oil sealing is entered on the outside of oil sealing 20 enters store oil via the gas passage 31 on guide way 30
Between cylinder barrel 50 and work cylinder barrel 40.Wherein, oil sealing 20 includes the skeleton 21 and seal rubber body 22 being combined with each other, seal rubber
Body 22 has the main lip 221 being engaged with the axial plane of piston rod 10 and secondary lip 222, along the axial direction of piston rod 10, main lip
Mouth 221 is located at the inside of secondary lip 222.The axial plane of main lip 221 and secondary lip 222 and piston rod 10 is limited jointly around work
The toroidal cavity 23 that stopper rod 10 is arranged offers aeration aperture 223 on seal rubber body 22, and the aeration aperture 223 is from the outer of oil sealing 20
Side extends to toroidal cavity 23.
In damper of the invention, due to offering aeration aperture 223 on seal rubber body 22, subtract to above-mentioned
Nitrogen can be filled in toroidal cavity 23 when being inflated by vibration device via aeration aperture 223, make air pressure in toroidal cavity 23 by
It is cumulative big, until main lip 221 is strutted into (that is, at least part of main lip 221 is made to be detached from the axial plane of piston rod 10), thus
Nitrogen is set to enter the inside of oil sealing 20.In this way, the higher piston rod axial plane of precision will not be made in gas replenishment process
At damage, so that the case where avoiding the occurrence of gas leakage oil leak, extends the service life of damper.
As shown in Figures 2 and 3, in order to guarantee that main lip 221 can be pressed on the axis of piston rod 10 again after the completion of inflation
On face, to prevent helium leak, it is preferable that the outside of main lip 221 is provided with the first spring ring 24.In this case, it needs
Main lip 221 could be strutted by overcoming the elastic force of the first spring ring 24.
In damper of the invention, aeration aperture 223 can be provided with to any suitable position of seal rubber body 22,
As long as guaranteeing to make to be connected on the outside of toroidal cavity 23 and oil sealing 20 in inflation.As an implementation, such as Fig. 2 and figure
Shown in 3, aeration aperture 223 can be provided on secondary lip 222.
In order to guarantee that secondary lip 222 can be pressed on the axial plane of piston rod 10 to enhance sealing effect, it is preferable that as schemed
Shown in 2 and Fig. 3, the outside of secondary lip 222 is provided with second spring circle 25.In such a case, it is possible to which aeration aperture 223 is arranged
Between the root and second spring circle 25 of secondary lip 222.
In damper of the invention, aeration aperture 223 can have biggish aperture so that the inside of toroidal cavity 23 with
The outside of oil sealing 20 remains connection.However, in order to improve leakproofness, further prevent the foreign matters such as extraneous dust, gravel into
Entering the inside of oil sealing 20, it is preferable that the elastic characteristic that can use seal rubber body 22 makes aeration aperture 223 be formed as " lip hole ",
Be pressurized the hole opened when that is, closing, inflating when non-aerating.Specifically, the aperture of aeration aperture 223 can be 0.5-1.3mm.
With no restriction to the moulding process of aeration aperture 223, aeration aperture 223 can be when being molded seal rubber body 22 by the present invention
It is integrally formed, also can use eedle or Tapered Cup and perforate on seal rubber body 22.In the latter case, above
The aperture of the aeration aperture 223 referred to i.e. the diameter of the eedle or Tapered Cup.
According to another aspect of the present invention, a kind of shock absorber packing gland is provided, which is in above-mentioned damper
Oil sealing 20.
In accordance with a further aspect of the present invention, a kind of inflation method of damper is provided, wherein the damper includes oil storage cylinder
Cylinder 50, work cylinder barrel 40, piston rod 10 and the oil sealing 20 and guide way 30 being set on the piston rod 10,50 sets of store oil cylinder barrel
It is located at the outside of work cylinder barrel 40, one end of work cylinder barrel 40 is arranged in oil sealing 20 and guide way 30 and guide way 30 is located at oil sealing
20 inside, the gas passage 31 passed through for nitrogen is provided on guide way 30, and oil sealing 20 includes 21 He of skeleton being combined with each other
Seal rubber body 22, seal rubber body 22 have the main lip 221 being engaged with the axial plane of piston rod 10 and secondary lip 222,
Along the axial direction of piston rod 10, main lip 221 is located at the inside of secondary lip 222, main lip 221 and secondary lip 222 and piston rod 10
Axial plane limit toroidal cavity 23 jointly.
The inflation method includes: first step, and aeration aperture 223 is opened up on seal rubber body 22, makes the aeration aperture 223
Toroidal cavity 23 is extended to from the outside of oil sealing 20；Nitrogen is filled in toroidal cavity 23 by second step via aeration aperture 223,
It increases the air pressure in toroidal cavity 23 to strut main lip 221, so that nitrogen be made to enter the inside of oil sealing 20, then passes through and lead
Gas passage 31 on body 30 enters between work cylinder barrel 40 and store oil cylinder barrel 50.
Specifically, in the second step, nitrogen can be filled with annular via aeration aperture 223 by various modes appropriate
In cavity 23.As an implementation, the air tube being connected with nitrogen storage tank can be inserted into aeration aperture 223, with to ring
Inflation in shape cavity 23.
As another embodiment, as shown in figure 4, can use oscillating damper inflation tooling 100 for nitrogen via described
Aeration aperture 223 is filled in the toroidal cavity 23.The equipment that oscillating damper inflation tooling is well known to those skilled in the art, tool
Body structure may refer to patent document CN202349585U and CN102734630A, and details are not described herein.
In this embodiment, when inflation, start the hydraulic cylinder 110 of oscillating damper inflation tooling 100 first, drive two
Inflator module 120 is clamped in the upper end of store oil cylinder barrel 50, in the week of aeration aperture 223 with making the two 120 pairings of inflator module
It encloses to form closed chamber；Then it is passed through high pressure nitrogen into the closed chamber, is gradually increased the air pressure in 20 outside of oil sealing to incite somebody to action
Aeration aperture 223 struts, and nitrogen enters in toroidal cavity 23 via aeration aperture 223, and the air pressure in toroidal cavity 23 is gradually increased directly
Extremely main lip 221 is strutted, so that nitrogen be made to enter the inside of oil sealing 20.
In conclusion the present invention by opening up aeration aperture 223 on the seal rubber body 22 of oil sealing 20, nitrogen can be passed through
It is filled in toroidal cavity 23 by aeration aperture 223, is gradually increased the air pressure in toroidal cavity 23, until main lip 221 is strutted,
To make nitrogen enter the inside of oil sealing 20.In this way, it is possible to substitute traditional contact pin type aeration, and in gas replenishment process
In the higher piston rod axial plane of precision will not be caused to damage, so that the case where avoiding the occurrence of gas leakage oil leak, extends damper
Service life.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of damper, including piston rod (10) and the oil sealing (20) being set on the piston rod (10), the oil sealing (20)
Skeleton (21) and seal rubber body (22) including intercombination, the seal rubber body (22) have and the piston rod (10)
The main lip (221) that is engaged of axial plane and secondary lip (222), the main lip (221) and secondary lip (222) and the work
The axial plane of stopper rod (10) limits toroidal cavity (23) jointly, which is characterized in that offers and fills on the seal rubber body (22)
Stomata (223), the aeration aperture (223) extend to the toroidal cavity (23) on the outside of the oil sealing (20), wherein the pair
Be provided on the outside of lip (222) second spring circle (25), the aeration aperture (223) be provided on the secondary lip (222) and
Between the root and the second spring circle (25) of the secondary lip (222).
2. damper according to claim 1, which is characterized in that be provided with the first bullet on the outside of the main lip (221)
Spring coil (24).
3. damper according to claim 1, which is characterized in that the aperture of the aeration aperture (223) is 0.5-1.3mm.
4. a kind of shock absorber packing gland, which is characterized in that the shock absorber packing gland is according to any one of claim 1-3
The oil sealing (20) in damper.
5. a kind of inflation method of damper, the damper includes piston rod (10) and the oil that is set on the piston rod (10)
It seals (20), the oil sealing (20) includes the skeleton (21) and seal rubber body (22) being combined with each other, the seal rubber body (22)
The main lip (221) being engaged with the axial plane with the piston rod (10) and secondary lip (222), the main lip (221)
Toroidal cavity (23) are limited jointly with the axial plane of secondary lip (222) and the piston rod (10), which is characterized in that the pair lip
Second spring circle (25) are provided on the outside of mouth (222), the inflation method includes:
First step opens up aeration aperture (223) on the seal rubber body (22), makes the aeration aperture (223) from the oil sealing
(20) it is extended on the outside of the toroidal cavity (23), the aeration aperture (223) is provided on the secondary lip (222) and is located at
Between the root and the second spring circle (25) of the pair lip (222)；
Nitrogen is filled in the toroidal cavity (23) via the aeration aperture (223), makes the toroidal cavity by second step
(23) air pressure in is increased to strut the main lip (221), to make the nitrogen into the inside of the oil sealing (20).
6. inflation method according to claim 5, which is characterized in that in the second step, utilize oscillating damper inflation
Nitrogen is filled in the toroidal cavity (23) by tooling (100) via the aeration aperture (223).
7. inflation method according to claim 5, which is characterized in that be provided with first on the outside of the main lip (221)
Spring ring (24).
8. inflation method according to claim 5, which is characterized in that the aperture of the aeration aperture (223) is 0.5-
1.3mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177539.3A CN107228152B (en) | 2016-03-24 | 2016-03-24 | Shock absorber packing gland, damper and its inflation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177539.3A CN107228152B (en) | 2016-03-24 | 2016-03-24 | Shock absorber packing gland, damper and its inflation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107228152A CN107228152A (en) | 2017-10-03 |
| CN107228152B true CN107228152B (en) | 2019-10-11 |
Family
ID=59933027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610177539.3A Active CN107228152B (en) | 2016-03-24 | 2016-03-24 | Shock absorber packing gland, damper and its inflation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107228152B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838080A (en) * | 2022-05-27 | 2022-08-02 | 邵阳市通达汽车零部件制造有限公司 | High-efficiency inflating device for automatic production of air springs and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193661A (en) * | 1995-01-13 | 1996-07-30 | Jatco Corp | Oil seal device and discharge valve |
| JPH0979302A (en) * | 1995-09-11 | 1997-03-25 | Toyota Motor Corp | Hydraulic damper and method of filling gas therein |
| JP2003301881A (en) * | 2002-04-05 | 2003-10-24 | Kayaba Ind Co Ltd | Seal structure of hydraulic shock absorber |
| CN2830781Y (en) * | 2005-07-06 | 2006-10-25 | 杭州福鼎交通器材有限公司 | Inflating oil seal for autocar shock absorber |
| CN102116355A (en) * | 2011-04-08 | 2011-07-06 | 南阳淅减汽车减振器有限公司 | Process method for inflating and sealing vibration damper |
| CN201925396U (en) * | 2011-02-22 | 2011-08-10 | 浙江万向系统有限公司 | Multi-lip PTFE (polytetrafluoroethylene) coated oil seal of automobile damper |
-
2016
- 2016-03-24 CN CN201610177539.3A patent/CN107228152B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193661A (en) * | 1995-01-13 | 1996-07-30 | Jatco Corp | Oil seal device and discharge valve |
| JPH0979302A (en) * | 1995-09-11 | 1997-03-25 | Toyota Motor Corp | Hydraulic damper and method of filling gas therein |
| JP2003301881A (en) * | 2002-04-05 | 2003-10-24 | Kayaba Ind Co Ltd | Seal structure of hydraulic shock absorber |
| CN2830781Y (en) * | 2005-07-06 | 2006-10-25 | 杭州福鼎交通器材有限公司 | Inflating oil seal for autocar shock absorber |
| CN201925396U (en) * | 2011-02-22 | 2011-08-10 | 浙江万向系统有限公司 | Multi-lip PTFE (polytetrafluoroethylene) coated oil seal of automobile damper |
| CN102116355A (en) * | 2011-04-08 | 2011-07-06 | 南阳淅减汽车减振器有限公司 | Process method for inflating and sealing vibration damper |
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| Publication number | Publication date |
|---|---|
| CN107228152A (en) | 2017-10-03 |
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