CN107228152A - Shock absorber packing gland, shock absorber and its inflation method - Google Patents
Shock absorber packing gland, shock absorber and its inflation method Download PDFInfo
- Publication number
- CN107228152A CN107228152A CN201610177539.3A CN201610177539A CN107228152A CN 107228152 A CN107228152 A CN 107228152A CN 201610177539 A CN201610177539 A CN 201610177539A CN 107228152 A CN107228152 A CN 107228152A
- Authority
- CN
- China
- Prior art keywords
- shock absorber
- air
- filled pore
- piston rod
- oil sealing
- 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.)
- Granted
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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
- F16F9/32—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, shock absorber and its inflation method.The shock absorber includes piston rod (10) and the oil sealing (20) being set on the piston rod, oil sealing includes the skeleton (21) and caulking gum body (22) being mutually combined, caulking gum 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, air-filled pore (223) is offered on caulking gum body, the air-filled pore extends to toroidal cavity on the outside of oil sealing.Due to offering air-filled pore on caulking gum body, therefore when being inflated to shock absorber, nitrogen can be filled with toroidal cavity via air-filled pore, the air pressure in toroidal cavity is gradually increased, until main lip is strutted, so that nitrogen enters the inner side of oil sealing.Piston rod axial plane that will not be higher to precision so in gas replenishment process causes damage, so as to avoid the occurrence of the situation of gas leakage oil leak, extends the service life of shock absorber.
Description
Technical field
The present invention relates to vehicle shock absorber field, in particular it relates to which a kind of shock absorber packing gland, further relates to one
Plant shock absorber and its inflation method.
Background technology
In order to improve the flatness and comfortableness of running car, the vibration of vehicle frame and vehicle body is set to decline rapidly
Subtract, shock absorber is equipped with general automobile suspension system.It is used as the potted component in shock absorber, shock absorber
Oil sealing is generally made up of metallic framework and caulking gum body.What is mainly sealed on caulking gum body is
Main lip and secondary lip, wherein, main lip is used to prevent the hydraulic fluid leak in work cylinder barrel；Secondary lip
For preventing the foreign matters such as extraneous dust, gravel from entering the position of oil sealing and piston rod cooperation.
, it is necessary to be filled with a certain amount of nitrogen to inside it in shock absorber production process.Traditional shock absorber
Inflation method is contact pin type aeration, i.e. contact pin is inserted between the secondary lip of oil sealing and piston rod first,
Then nitrogen is filled with cylinder barrel in closed inflator module.There is following defect in this inflation method：
1st, contact pin can cause the fit precision of damage, reduction piston rod and oil sealing to the axial plane of piston rod, cause
Leak air oil leak situations such as；2nd, after inflation is finished, when inflator module is opened, high pressure nitrogen meeting
Contact pin is gone out, causes contact pin loss or the waste in man-hour.
The content of the invention
In order to solve problems of the prior art, subtract according to an aspect of the present invention there is provided one kind
Shake device, including piston rod and the oil sealing being set on the piston rod, and the oil sealing includes the bone being mutually combined
Frame and caulking gum body, the caulking gum body have the main lip that the axial plane with the piston rod is engaged
The axial plane of mouth and secondary lip, the main lip and secondary lip and the piston rod limits annular sky jointly
Chamber, it is characterised in that offer air-filled pore on the caulking gum body, the air-filled pore is from the oil sealing
Outside extends to the toroidal cavity.
Alternatively, it is provided with the first turn on the outside of the main lip.
Alternatively, the air-filled pore is opened on the secondary lip.
Alternatively, second spring circle is provided with the outside of the secondary lip, the air-filled pore is located at the pair
Between the root of lip and the second spring circle.
Alternatively, the aperture of the air-filled pore is 0.5-1.3mm.
In the shock absorber of the present invention, due to offering air-filled pore on caulking gum body, therefore, to above-mentioned
When shock absorber is inflated, nitrogen can be filled with toroidal cavity via air-filled pore, made in toroidal cavity
Air pressure gradually increase, until main lip is strutted, so that nitrogen enters the inner side of oil sealing.Using this
The mode of kind, piston rod axial plane that will not be higher to precision in gas replenishment process causes damage, so as to avoid out
The situation of existing gas leakage oil leak, extends the service life of shock absorber.
According to another aspect of the present invention there is provided a kind of shock absorber packing gland, the shock absorber packing gland is as above institute
The oil sealing in the shock absorber stated.
In accordance with a further aspect of the present invention there is provided a kind of inflation method of shock absorber, the shock absorber includes
Piston rod and the oil sealing being set on the piston rod, the oil sealing include the skeleton being mutually combined and sealing rubber
Colloid, the caulking gum body has the main lip and secondary lip that the axial plane with the piston rod is engaged
Mouthful, the axial plane of the main lip and secondary lip and the piston rod limits toroidal cavity jointly, described to fill
Gas method includes：First step, air-filled pore is opened up on the caulking gum body, makes the air-filled pore from institute
State and the toroidal cavity is extended on the outside of oil sealing；Second step, nitrogen is filled with via the air-filled pore
In the toroidal cavity, the air pressure in the toroidal cavity is set to raise to strut the main lip, so that
The nitrogen is set to enter the inner side of the oil sealing.
Alternatively, in the second step, using oscillating damper inflation frock by nitrogen via the inflation
Hole is filled with the toroidal cavity.
Alternatively, it is provided with the first turn on the outside of the main lip.
Alternatively, the air-filled pore is opened on the secondary lip.
Alternatively, second spring circle is provided with the outside of the secondary lip, the air-filled pore is located at the pair
Between the root of lip and the second spring circle.
Alternatively, the aperture of the air-filled pore is 0.5-1.3mm.
The inflation method of the present invention can substitute traditional contact pin type aeration, and in gas replenishment process not
The meeting piston rod axial plane higher to precision causes damage, so as to avoid the occurrence of the situation of gas leakage oil leak, extends
The service life of shock absorber.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with
Following embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the partial sectional view of the shock absorber according to one embodiment of the present invention；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is the partial sectional view of the shock absorber packing gland according to one embodiment of the present invention；
Fig. 4 is the schematic diagram to oscillating damper inflation using oscillating damper inflation frock, wherein, at inflator module
In open mode.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair
It is bright.
In the present invention, in the case where not making opposite explanation, the noun of locality used such as " inside and outside " is
For shock absorber itself, refer to that outside is close to the side at shock absorber center on the inside of each part
Refer to the side away from shock absorber center.
As shown in Figure 1 to Figure 3, there is provided a kind of shock absorber, including storage according to an aspect of the present invention
Cylinder tube 50, work cylinder barrel 40, piston rod 10 and the and of oil sealing 20 being set on the piston rod 10
Guide way 30, store oil cylinder barrel 50 is set in the outside of work cylinder barrel 40, oil sealing 20 and guide way 30
It is located at the inner side of oil sealing 20 positioned at one end of work cylinder barrel 40 and guide way 30.During inflation, from oil sealing
The nitrogen that 20 outsides enter the inner side of oil sealing 20 enters oil storage cylinder via the gas passage 31 on guide way 30
Between cylinder 50 and work cylinder barrel 40.Wherein, oil sealing 20 includes the skeleton 21 being mutually combined and sealing rubber
Colloid 22, main lip 221 and pair that caulking gum body 22 is engaged with the axial plane with piston rod 10
Lip 222, along the axial direction of piston rod 10, main lip 221 is located at the inner side of secondary lip 222.Main lip
221 and the axial plane of secondary lip 222 and piston rod 10 limit the annular set around piston rod 10 jointly
Air-filled pore 223 is offered on cavity 23, caulking gum body 22, the air-filled pore 223 is outside oil sealing 20
Side extends to toroidal cavity 23.
In the shock absorber of the present invention, due to offering air-filled pore 223 on caulking gum body 22, therefore,
When being inflated to above-mentioned shock absorber, nitrogen via air-filled pore 223 can be filled with toroidal cavity 23
It is interior, the air pressure in toroidal cavity 23 is gradually increased, until main lip 221, which is strutted, (that is, makes master
At least a portion of lip 221 departs from the axial plane of piston rod 10) so that nitrogen enters oil sealing 20
Inner side.In this way, piston rod axial plane that will not be higher to precision in gas replenishment process causes damage,
So as to avoid the occurrence of the situation of gas leakage oil leak, the service life of shock absorber is extended.
As shown in Figures 2 and 3, in order to ensure inflation after the completion of main lip 221 can be pressed on work again
On the axial plane of stopper rod 10, to prevent helium leak, it is preferable that the outside of main lip 221 is provided with
One turn 24.In this case it is necessary to overcome the elastic force of the first turn 24 could be by main lip
Mouth 221 is strutted.
In the shock absorber of the present invention, air-filled pore 223 can be opened in any of caulking gum body 22
Appropriate position, as long as ensureing that at inflation toroidal cavity 23 can connect with the outside of oil sealing 20.
As a kind of embodiment, as shown in Figures 2 and 3, air-filled pore 223 can be opened in secondary lip 222
On.
In order to ensure that secondary lip 222 can be pressed on the axial plane of piston rod 10 to strengthen sealing effectiveness,
Preferably, as shown in Figures 2 and 3, the outside of secondary lip 222 is provided with second spring circle 25.At this
Kind in the case of, air-filled pore 223 can be arranged on secondary lip 222 root and second spring circle 25 it
Between.
In the shock absorber of the present invention, air-filled pore 223 can have larger aperture, so that toroidal cavity
23 inside remains with the outside of oil sealing 20 and connected.However, in order to improve sealing, further
Prevent the foreign matters such as extraneous dust, gravel from entering the inner side of oil sealing 20, it is preferable that can utilize and seal rubber
The elastic characteristic of colloid 22 makes air-filled pore 223 be formed as in " lip hole ", i.e. closes, inflate when non-aerating
When be pressurized open hole.Specifically, the aperture of air-filled pore 223 can be 0.5-1.3mm.
The present invention is not restricted to the moulding process of air-filled pore 223, and air-filled pore 223 can be in injection sealing
It is integrally formed, can also be perforated using eedle or Tapered Cup on caulking gum body 22 during rubber bodies 22
Form.In the latter case, i.e. air-filled pore mentioned above 223 the aperture eedle or
The diameter of Tapered Cup.
According to another aspect of the present invention there is provided a kind of shock absorber packing gland, the shock absorber packing gland subtracts to be above-mentioned
The oil sealing 20 shaken in device.
In accordance with a further aspect of the present invention there is provided a kind of inflation method of shock absorber, wherein, the shock absorber
Including store oil cylinder barrel 50, work cylinder barrel 40, piston rod 10 and the oil being set on the piston rod 10
Envelope 20 and guide way 30, store oil cylinder barrel 50 are set in the outside of work cylinder barrel 40, oil sealing 20 and guiding
Body 30 is arranged on one end of work cylinder barrel 40 and guide way 30 is located at the inner side of oil sealing 20, guide way 30
On be provided with the gas passage 31 passed through for nitrogen, oil sealing 20 includes the skeleton 21 being mutually combined and sealing
Rubber bodies 22, caulking gum body 22 has the main lip 221 that the axial plane with piston rod 10 is engaged
With secondary lip 222, along the axial direction of piston rod 10, main lip 221 is located at the inner side of secondary lip 222, main
The axial plane of lip 221 and secondary lip 222 and piston rod 10 limits toroidal cavity 23 jointly.
The inflation method includes：First step, air-filled pore 223 is opened up on caulking gum body 22, is made
The outside of air-filled pore 223 from the oil sealing 20 extends to toroidal cavity 23；Second step, by nitrogen via
Air-filled pore 223 is filled with toroidal cavity 23, raises air pressure in toroidal cavity 23 with by main lip 221
Strut, so that nitrogen enters the inner side of oil sealing 20, then pass through the gas passage 31 on guide way 30
Into between work cylinder barrel 40 and store oil cylinder barrel 50.
Specifically, in the second step, can by various appropriate modes by nitrogen via air-filled pore 223
It is filled with toroidal cavity 23.As a kind of embodiment, the air tube that will can be connected with nitrogen storage tank
Insert in air-filled pore 223, to be inflated into toroidal cavity 23.
As another embodiment, as shown in Figure 4, it is possible to use oscillating damper inflation frock 100 is by nitrogen
Gas is filled with the toroidal cavity 23 via the air-filled pore 223.Oscillating damper inflation frock is this area
Equipment known to technical staff, its concrete structure may refer to patent document CN202349585U and
CN102734630A, will not be repeated here.
In this embodiment, during inflation, the hydraulic cylinder of oscillating damper inflation frock 100 is started first
110, two inflator modules 120 are driven, store oil cylinder barrel are clamped in making the two pairings of inflator module 120
50 upper end, to form closed chamber around air-filled pore 223；Then it is passed through into the closed chamber
High pressure nitrogen, makes the air pressure in the outside of oil sealing 20 gradually increase so that air-filled pore 223 to be strutted, nitrogen via
Air-filled pore 223 enters in toroidal cavity 23, and the air pressure in toroidal cavity 23 gradually increases until by main lip
Mouth 221 is strutted, so that nitrogen enters the inner side of oil sealing 20.
It is in summary, of the invention by opening up air-filled pore 223 on the caulking gum body 22 of oil sealing 20,
Nitrogen can be filled with toroidal cavity 23 via air-filled pore 223, make air pressure in toroidal cavity 23 by
It is cumulative big, until main lip 221 is strutted, so that nitrogen enters the inner side of oil sealing 20.With this side
Formula, can substitute traditional contact pin type aeration, and will not be higher to precision in gas replenishment process work
Stopper rod axial plane causes damage, so as to avoid the occurrence of the situation of gas leakage oil leak, extends the use longevity of shock absorber
Life.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited
Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, the present invention no longer separately illustrates to various possible combinations.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (12)
1. a kind of shock absorber, including piston rod (10) and the oil sealing that is set on the piston rod (10)
(20), the oil sealing (20) includes the skeleton (21) and caulking gum body (22) being mutually combined, institute
State the main lip (221) that there is caulking gum body (22) axial plane with the piston rod (10) to be engaged
With secondary lip (222), the main lip (221) and secondary lip (222) and the piston rod (10)
Axial plane limit toroidal cavity (23) jointly, it is characterised in that on the caulking gum body (22)
Air-filled pore (223) is offered, the air-filled pore (223) extends to institute on the outside of the oil sealing (20)
State toroidal cavity (23).
2. shock absorber according to claim 1, it is characterised in that the main lip (221)
Outside is provided with the first turn (24).
3. shock absorber according to claim 1, it is characterised in that the air-filled pore (223) is opened
It is located on the secondary lip (222).
4. shock absorber according to claim 3, it is characterised in that the secondary lip (222)
Outside is provided with second spring circle (25), and the air-filled pore (223) is located at the secondary lip (222)
Root and the second spring circle (25) between.
5. shock absorber according to claim 1, it is characterised in that the air-filled pore (223)
Aperture is 0.5-1.3mm.
6. a kind of shock absorber packing gland, it is characterised in that the shock absorber packing gland is according to claim 1-5
The oil sealing (20) in shock absorber described in middle any one.
7. a kind of inflation method of shock absorber, the shock absorber includes piston rod (10) and is set in this
Oil sealing (20) on piston rod (10), the oil sealing (20) includes the skeleton (21) being mutually combined
With caulking gum body (22), the caulking gum body (22) has the axle with the piston rod (10)
Main lip (221) and secondary lip (222) that face is engaged, the main lip (221) and secondary lip
(222) axial plane with the piston rod (10) limits toroidal cavity (23) jointly, it is characterised in that
The inflation method includes：
First step, opens up air-filled pore (223) on the caulking gum body (22), makes the air-filled pore
(223) toroidal cavity (23) is extended on the outside of the oil sealing (20)；
Second step, nitrogen is filled with the toroidal cavity (23) via the air-filled pore (223),
The air pressure in the toroidal cavity (23) is set to raise to strut the main lip (221), so that
The nitrogen enters the inner side of the oil sealing (20).
8. inflation method according to claim 7, it is characterised in that in the second step,
Nitrogen is filled with the annular sky via the air-filled pore (223) using oscillating damper inflation frock (100)
In chamber (23).
9. inflation method according to claim 7, it is characterised in that the main lip (221)
Outside be provided with the first turn (24).
10. inflation method according to claim 7, it is characterised in that the air-filled pore (223)
It is opened on the secondary lip (222).
11. inflation method according to claim 10, it is characterised in that the secondary lip (222)
Outside be provided with second spring circle (25), the air-filled pore (223) is located at the secondary lip (222)
Root and the second spring circle (25) between.
12. inflation method according to claim 7, it is characterised in that the air-filled pore (223)
Aperture be 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 true CN107228152A (en) | 2017-10-03 |
| CN107228152B 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) |
Cited By (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 |
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|---|---|---|---|---|
| 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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107228152B (en) | 2019-10-11 |
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