CN103089901A - Guider oil seal assembly and damper - Google Patents
Guider oil seal assembly and damper Download PDFInfo
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- CN103089901A CN103089901A CN2013100137300A CN201310013730A CN103089901A CN 103089901 A CN103089901 A CN 103089901A CN 2013100137300 A CN2013100137300 A CN 2013100137300A CN 201310013730 A CN201310013730 A CN 201310013730A CN 103089901 A CN103089901 A CN 103089901A
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- guider
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- shaped step
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Abstract
The invention relates to the technical field of dampers and discloses a guider oil seal assembly which comprises a guider and an oil seal. A first annular step and a second annular step are sequentially arranged at the oil seal match end of the guider from outside to inside along the radial direction, the second annular step is lower than the first annular step, an air sealing lip extending along the axial direction is arranged at the guider match end of the oil seal, the lateral side of the air sealing lip abuts against the outer lateral wall of the second annular step, and a space between the first annular step and the second annular step is communicated with an oil return hole. The guider oil seal assembly can prevent high pressure air in a damper from entering a work oil cylinder, avoids idle running of the damper, can reduce impact of damper oil on the oil seal and improves sealing performance of the oil seal. The invention further discloses a damper with the guider oil seal assembly.
Description
Technical field
The present invention relates to the vibration damper technical field, relate in particular to a kind of guider oil seal assembly.The invention still further relates to a kind of vibration damper with above-mentioned guider oil seal assembly.
Background technique
In recent years, along with automotive industry, the particularly fast development of car industry as the vibration damper of the important accessory of automobile, has also obtained development rapidly.Automobile absorber is a kind of damping member, is one of important component of automobile suspension system, and smoothness, travelling comfort, Security, steering operation and the passing ability of Vehicle Driving Cycle played conclusive effect.Being widely used in now the independent suspension type vibration damper on car, is bitubular hydraulic damper or pneumatic bumper more than 95%, and to have quality little due to it, stable performance, and reliable operation is fit to the advantages such as production in enormous quantities, becomes the main flow of automobile absorber.
Vibration damper generally includes operating cylinder, piston rod, piston, shoe cream room, guider oil seal assembly, piston rod is placed in described operating cylinder, described guider oil seal assembly connects shoe cream room and operating cylinder, and described piston rod passes the intermediate throughholes of described guider oil seal assembly.The piston rod of vibration damper is in the process of motion, and shock absorber fluid constantly circulates between shoe cream room and operating cylinder by the damping hole on piston and foot valve seat, thereby is kinetic transformation that heat energy is dispersed in air.
Wherein, the guider oil seal assembly is one of important spare part of vibration damper, please refer to Fig. 1-Fig. 3, and Fig. 1 is the structural representation of a kind of typical guider oil seal assembly in prior art, Fig. 2 is the structural representation of guider in Fig. 1, and Fig. 3 is the structural representation of oil sealing in Fig. 1.
As shown in Figure 1-Figure 3, this guider oil seal assembly comprises guider 1 ', oil sealing 2 ', guider 1 ', oil sealing 2 ' all have intermediate throughholes, the lower end of guider 1 ' is connected with the operating cylinder (not shown), match with oil storage cylinder in the upper end of guider 1 ', the cavity of guider 1 ' is communicated with oil storage cylinder and operating cylinder by spill port 11 ', and oil sealing 2 ' just is being buckled in the upper end (oil sealing abutting end) of guider 1 '.
The piston rod of vibration damper is in the process of motion, and a part of shock absorber fluid enters in guider 1 ' cavity by the gap between guider 1 ' and piston rod, flows in oil storage cylinder by the spill port 11 ' above guider 1 '.But the pressurized gas in vibration damper also can be connected with operating cylinder by the spill port 11 ' above guider 1 ', and therefore, the pressurized gas in vibration damper are easy to scurry in operating cylinder, make vibration damper generation idle running.
In addition, vibration damper is in the process of high-speed motion, the fraction shock absorber fluid flows in guider 1 ' cavity by the gap between piston rod and guider 1 ' lining, because the speed of this part shock absorber fluid is very high, this part shock absorber fluid will directly impact oil sealing 2 ', the sealing of oil sealing 2 ' is reduced greatly, the gas leakage oil leakage phenomenon very easily occurs.
Therefore, how to prevent that the pressurized gas in vibration damper from scurrying in operating cylinder, reducing shock absorber fluid to the impact of oil sealing, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
First purpose of the present invention is to provide a kind of guider oil seal assembly, this guider oil seal assembly prevents that the pressurized gas in vibration damper from scurrying in operating cylinder, prevent vibration damper generation idle running, can reduce shock absorber fluid to the impact of oil sealing, improve the sealability of oil sealing.Second purpose of the present invention is to provide a kind of vibration damper with above-mentioned guider oil seal assembly.
In order to realize above-mentioned first purpose, the invention provides a kind of guider oil seal assembly, comprise guider and oil sealing, the oil sealing abutting end of described guider radially is provided with the first ring-shaped step, the second ring-shaped step from outside to inside successively, and described the second ring-shaped step is lower than the first ring-shaped step; The guider abutting end of described oil sealing is provided with the envelope gas lip that extends vertically, and the side of described envelope gas lip is against the outer side wall of described the second ring-shaped step; Space between described the first ring-shaped step, described the second ring-shaped step is communicated with spill port.
Preferably, the outside of described oil sealing is provided with the annular screens projection of extending vertically, and this annular screens projection forms snap-fit with the outside of described the first ring-shaped step.
Preferably, the outside of described the first ring-shaped step is provided with annular groove, the described annular groove of described annular screens projection chucking.
Preferably, the inboard of described the first ring-shaped step is provided with annular retaining groove, and the outside of described oil sealing becomes snap-fit with described annular screens groove type.
Preferably, described oil sealing comprises rubber layer and skeleton, and at described oil sealing radially, the radial dimension of described rubber layer is greater than the radial dimension of described skeleton, and described oil sealing rubber layer radially becomes interference fit with described annular screens groove type.
This guider oil seal assembly that provides comprises guider and oil sealing, and the oil sealing abutting end of described guider radially is provided with the first ring-shaped step, the second ring-shaped step from outside to inside successively, and described the second ring-shaped step is lower than the first ring-shaped step; The guider abutting end of described oil sealing is provided with the envelope gas lip that extends vertically, and the side of described envelope gas lip is against the outer side wall of described the second ring-shaped step; Space between described the first ring-shaped step, described the second ring-shaped step is communicated with spill port.
the guider oil seal assembly of this structure, the envelope gas lip of oil sealing inboard (guider abutting end) is against the outer side wall of the second ring-shaped step of guider upper end (oil sealing abutting end), make envelope gas lip coordinate with the second ring-shaped step and form one-way valve structures, vibration damper is no matter in working order under lower or off position, oil in vibration damper and pressurized gas will compress envelope gas lip, make envelope gas lockjaw paste the outer side wall of described the second ring-shaped step, oil in vibration damper and pressurized gas can't enter inner chamber at guider by described envelope gas lip, and then can't enter in operating cylinder, being about to pressurized gas and operating cylinder keeps apart, only have when the shock absorber fluid in the guider cavity reaches certain pressure, under the pressure-acting of shock absorber fluid, envelope gas lip will leave the outer side wall of described the second ring-shaped step, be also that one-way valve structures just can be opened, so just prevented the existence of vibration damper due to the idle running of pressurized gas initiation.
In addition, vibration damper is in the high-speed motion process, after shock absorber fluid enters the guider inner chamber by the gap between piston rod and guide liner, before pressure does not arrive certain intensity, to be gathered in the guider inner chamber, existence due to guider cavity inner high voltage oil, make shock absorber fluid that piston rod and lining gap flow through become static pressure to the impact force of oil sealing, this part shock absorber fluid can not directly impact oil sealing, to can not affect the sealing of oil sealing, be difficult for occuring the gas leakage oil leakage phenomenon, greatly improved the working life of oil sealing.
In order to realize above-mentioned second purpose, the present invention also provides a kind of vibration damper, comprise above-mentioned guider oil seal assembly, described guider lower end radially is connected with the operating cylinder of vibration damper, described guider upper end radially is connected with oil storage cylinder, the intermediate throughholes of described guider, oil sealing matches with piston rod, and described spill port is communicated with the shoe cream room of oil storage cylinder, and the upper end of described oil sealing is against the top of oil storage cylinder.Because above-mentioned guider oil seal assembly has above-mentioned technique effect, the vibration damper with this guider oil seal assembly also should have corresponding technique effect.
Description of drawings
Fig. 1 is the structural representation of a kind of typical guider oil seal assembly in prior art;
The structural representation of the guider oil seal assembly that Fig. 2 provides for first embodiment of the invention;
The structural representation of the guider oil seal assembly that Fig. 3 provides for second embodiment of the invention;
Fig. 4 is the structural representation of guider in Fig. 3;
Fig. 5 is the structural representation of oil sealing in Fig. 4;
The structural representation of the guider oil seal assembly that Fig. 6 provides for second embodiment of the invention;
Fig. 7 is the structural representation of guider in Fig. 6;
Fig. 8 is the structural representation of oil sealing in Fig. 6;
Wherein, in Fig. 1-Fig. 8:
Guider 1 ', spill port 11 ', oil sealing 2 ';
Embodiment
Below in conjunction with accompanying drawing, content of the present invention is described, following description is only exemplary and indicative, should any restriction not arranged to protection scope of the present invention.
Please refer to Fig. 2, the structural representation of the guider oil seal assembly that Fig. 2 provides for first embodiment of the invention.
As shown in Figure 2, this guider oil seal assembly that provides comprises guider 1 and oil sealing 2, described guider 1 and oil sealing 2 radially be equipped with intermediate throughholes, the piston rod of vibration damper passes the intermediate throughholes of guider 1, oil sealing 2 successively, also is provided with lining between the through hole of guider 1 and piston rod.
Oil sealing 2 abutting ends of described guider 1 (being also the upper end of guider 1) radially are provided with the first ring-shaped step 11, the second ring-shaped step 12 from outside to inside successively, have certain interval between the first ring-shaped step 11 and the second ring-shaped step 12, described the second ring-shaped step 12 is lower than the first ring-shaped step 11; The guider abutting end of described oil sealing 2 (being also the inboard of oil sealing 2) is provided with the envelope gas lip 21 that extends vertically, and the side of described envelope gas lip 21 is against the outer side wall of described the second ring-shaped step 12; Space between described the first ring-shaped step 11, described the second ring-shaped step 12 is communicated with spill port 13.
the guider oil seal assembly of this structure, the envelope gas lip 21 of oil sealing 2 inboards is against the outer side wall of the second ring-shaped step 12 of guider 1 upper end, make envelope gas lip 21 coordinate with the second ring-shaped step 12 and form one-way valve structures, vibration damper is no matter in working order under lower or off position, oil in vibration damper and pressurized gas will compress envelope gas lip 21, make envelope gas lip 21 be close to the outer side wall of described the second ring-shaped step 12, the inner chamber that oil in vibration damper and pressurized gas can't enter at guider 1 by described envelope gas lip 21, and then can't enter in operating cylinder, being about to pressurized gas and operating cylinder keeps apart, after shock absorber fluid in operating cylinder enters guider 1 inner chamber by the gap between guider 1 and piston rod, to accumulate in guider 1 inner chamber, only have when the shock absorber fluid in guider 1 cavity reaches certain pressure, under the pressure-acting of shock absorber fluid, envelope gas lip 21 will leave the outer side wall of described the second ring-shaped step 12, be also that one-way valve structures just can be opened, so just prevented the existence of vibration damper due to the idle running of pressurized gas initiation.
In addition, vibration damper is in the high-speed motion process, after shock absorber fluid enters guider 1 inner chamber by the gap between piston rod and guider 1 lining, before pressure does not arrive certain intensity, to accumulate in guider 1 inner chamber, existence due to guider 1 cavity inner high voltage oil, make shock absorber fluid that piston rod and lining gap flow through will become static pressure to the impact force of oil sealing 2, this part shock absorber fluid can not directly impact oil sealing 2, to can not affect the sealing of oil sealing 2, be difficult for occuring the gas leakage oil leakage phenomenon, greatly improved the working life of oil sealing 2.
In concrete scheme, oil sealing 2 can adopt the structure shown in Fig. 2 with the fit system of guider 1, the outside of described oil sealing 2 is provided with the annular screens projection 22 of extending vertically, and this annular screens projection 22 forms snap-fit with the outside of described the first ring-shaped step 11.
Further in scheme, in order to improve the reliability of annular screens projection the 22 and first ring-shaped step 11 outside snap-fit, the outside of described the first ring-shaped step 11 is provided with annular groove 14, the described annular screens projection 22 described annular grooves 14 of chucking.
Be appreciated that, first ring-shaped step 11 outsides can also be provided with annular slope 16, as shown in Figure 3-Figure 5, and correspondingly, the annular screens projection 22 in described oil sealing 2 outsides can adopt the ramp structure that matches with described annular slope 16, so that the cooperation both is tightr.
Oil sealing 2 is not limited to said structure with the fit system of guider 1, and as Fig. 6-shown in Figure 8, the inboard of described the first ring-shaped step 11 is provided with annular retaining groove 15, the outside of described oil sealing 2 and described annular retaining groove 15 formation snap-fit.
In concrete scheme, described oil sealing 2 comprises rubber layer and skeleton, at described oil sealing 2 radially, the radial dimension of described rubber layer is greater than the radial dimension of described skeleton, and described oil sealing 2 rubber layer radially becomes interference fit with described annular screens groove type, closely cooperate so that the outside of the annular retaining groove of the first ring-shaped step 11 inboards and oil sealing 2 forms, improve the sealability of oil sealing 2.
In order to realize above-mentioned second purpose, the present invention also provides a kind of vibration damper, comprise above-mentioned guider oil seal assembly, the lower end of described guider 1 radially is connected with the operating cylinder of vibration damper, described guider 1 upper end radially is connected with oil storage cylinder, the intermediate throughholes of described guider 1, oil sealing 2 matches with piston rod, and described spill port 13 is communicated with the shoe cream room of oil storage cylinder, and the upper end of described oil sealing 2 is against the top of oil storage cylinder.Because above-mentioned guider oil seal assembly has above-mentioned technique effect, the vibration damper with this guider oil seal assembly also should have corresponding technique effect, no longer is described in detail at this.
The above is only the description of the preferred implementation of invention; should be understood that; finiteness due to literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a guider oil seal assembly, comprise guider and oil sealing, it is characterized in that, the oil sealing abutting end of described guider radially is provided with the first ring-shaped step, the second ring-shaped step from outside to inside successively, and described the second ring-shaped step is lower than the first ring-shaped step; The guider abutting end of described oil sealing is provided with the envelope gas lip that extends vertically, and the side of described envelope gas lip is against the outer side wall of described the second ring-shaped step; Space between described the first ring-shaped step, described the second ring-shaped step is communicated with spill port.
2. guider oil seal assembly according to claim 1, is characterized in that, the outside of described oil sealing is provided with the annular screens projection of extending vertically, and this annular screens projection forms snap-fit with the outside of described the first ring-shaped step.
3. guider oil seal assembly according to claim 2, is characterized in that, the outside of described the first ring-shaped step is provided with annular groove, the described annular groove of described annular screens projection chucking.
4. guider oil seal assembly according to claim 1, is characterized in that, the inboard of described the first ring-shaped step is provided with annular retaining groove, and the outside of described oil sealing becomes snap-fit with described annular screens groove type.
5. guider oil seal assembly according to claim 4, it is characterized in that, described oil sealing comprises rubber layer and skeleton, at described oil sealing radially, the radial dimension of described rubber layer is greater than the radial dimension of described skeleton, and described oil sealing rubber layer radially becomes interference fit with described annular screens groove type.
6. vibration damper, it is characterized in that, comprise the described guider oil seal assembly of claim 1-5 any one, described guider lower end radially is connected with the operating cylinder of vibration damper, described guider upper end radially is connected with oil storage cylinder, the intermediate throughholes of described guider, oil sealing matches with piston rod, and described spill port is communicated with the shoe cream room of oil storage cylinder, and the upper end of described oil sealing is against the top of oil storage cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100137300A CN103089901A (en) | 2013-01-15 | 2013-01-15 | Guider oil seal assembly and damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100137300A CN103089901A (en) | 2013-01-15 | 2013-01-15 | Guider oil seal assembly and damper |
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| Publication Number | Publication Date |
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| CN103089901A true CN103089901A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100137300A Pending CN103089901A (en) | 2013-01-15 | 2013-01-15 | Guider oil seal assembly and damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290555A (en) * | 2014-09-29 | 2015-01-21 | 上汽通用五菱汽车股份有限公司 | Automotive suspension supporting column base |
| CN107061593A (en) * | 2017-04-13 | 2017-08-18 | 安徽奥泰粉末冶金有限公司 | A kind of shock absorption guide apparatus |
| CN110145565A (en) * | 2019-06-28 | 2019-08-20 | 杭州金士顿实业有限公司 | The seat damper of damping-force adjustable |
Citations (9)
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| GB2303684A (en) * | 1995-07-27 | 1997-02-26 | Monroe Auto Equipment Co | Apparatus and method of charging a damper with pressurized gas |
| US5839551A (en) * | 1994-11-15 | 1998-11-24 | Sintermetal, S.A. | Piston and piston-rod guide unit for hydraulic shock absorbers |
| CN2382587Y (en) * | 1999-07-01 | 2000-06-14 | 万向钱潮股份有限公司 | Automobile damper |
| KR20020053591A (en) * | 2000-12-27 | 2002-07-05 | 밍 루 | Structure for support head cap use in a shock absorber |
| KR20030063994A (en) * | 2002-01-25 | 2003-07-31 | 주식회사 만도 | Oil seal of a shock absorber |
| JP2005240832A (en) * | 2004-02-24 | 2005-09-08 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN202251632U (en) * | 2011-10-18 | 2012-05-30 | 慈溪市正大车业有限公司 | Automobile vibration damper |
| CN202280782U (en) * | 2011-10-18 | 2012-06-20 | 慈溪市正大车业有限公司 | Novel guider oil seal assembly for damper |
| CN202468821U (en) * | 2012-03-08 | 2012-10-03 | 浙江戈尔德减振器有限公司 | Guide sealing device of vibration damper |
-
2013
- 2013-01-15 CN CN2013100137300A patent/CN103089901A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839551A (en) * | 1994-11-15 | 1998-11-24 | Sintermetal, S.A. | Piston and piston-rod guide unit for hydraulic shock absorbers |
| GB2303684A (en) * | 1995-07-27 | 1997-02-26 | Monroe Auto Equipment Co | Apparatus and method of charging a damper with pressurized gas |
| CN2382587Y (en) * | 1999-07-01 | 2000-06-14 | 万向钱潮股份有限公司 | Automobile damper |
| KR20020053591A (en) * | 2000-12-27 | 2002-07-05 | 밍 루 | Structure for support head cap use in a shock absorber |
| KR20030063994A (en) * | 2002-01-25 | 2003-07-31 | 주식회사 만도 | Oil seal of a shock absorber |
| JP2005240832A (en) * | 2004-02-24 | 2005-09-08 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN202251632U (en) * | 2011-10-18 | 2012-05-30 | 慈溪市正大车业有限公司 | Automobile vibration damper |
| CN202280782U (en) * | 2011-10-18 | 2012-06-20 | 慈溪市正大车业有限公司 | Novel guider oil seal assembly for damper |
| CN202468821U (en) * | 2012-03-08 | 2012-10-03 | 浙江戈尔德减振器有限公司 | Guide sealing device of vibration damper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290555A (en) * | 2014-09-29 | 2015-01-21 | 上汽通用五菱汽车股份有限公司 | Automotive suspension supporting column base |
| CN107061593A (en) * | 2017-04-13 | 2017-08-18 | 安徽奥泰粉末冶金有限公司 | A kind of shock absorption guide apparatus |
| CN110145565A (en) * | 2019-06-28 | 2019-08-20 | 杭州金士顿实业有限公司 | The seat damper of damping-force adjustable |
| CN110145565B (en) * | 2019-06-28 | 2023-09-29 | 杭州金士顿实业有限公司 | Damping force adjustable seat damper |
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Application publication date: 20130508 |