CN105673765A - Dustproof type gas spring - Google Patents
Dustproof type gas spring Download PDFInfo
- Publication number
- CN105673765A CN105673765A CN201610222556.4A CN201610222556A CN105673765A CN 105673765 A CN105673765 A CN 105673765A CN 201610222556 A CN201610222556 A CN 201610222556A CN 105673765 A CN105673765 A CN 105673765A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- piston rod
- ring
- dirt
- proof boot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F16F9/362—Combination of sealing and guide arrangements for piston rods
-
- 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
- F16F9/38—Covers for protection or appearance
Abstract
The invention provides a dustproof type gas spring. The dustproof type gas spring comprises a cylinder barrel, a piston rod and a dustproof cover, one end of the piston rod is provided with a piston which is arranged in the cylinder barrel, the other end of the piston rod extends out of the cylinder barrel and is provided with a union joint, the dustproof cover is arranged on the part, between the cylinder barrel and the union joint, of the piston rod in a sleeving mode, one end of the dustproof cover is fixedly connected with the outer wall of the cylinder barrel, the other end of the dustproof cover is fixedly connected with the union joint, the length of the dustproof cover can be changed with the length, extending out of the cylinder barrel, of the piston rod, and the maximum elongation of the dustproof cover is the same with the maximum effective stroke of the piston rod. According to the dustproof type gas spring, the dustproof cover is arranged outside the piston rod in a sleeving mode and extends and contracts along with the piston rod, so that the dustproof function is achieved, meanwhile, when resetting and extending, the piston rod is limited by the dustproof cover, and noise is lowered.
Description
Technical field
The present invention relates to gas spring technology field, particularly relate to a kind of dust-protection type air spring.
Background technology
The piston rod of air spring is the critical component of air spring, and the surface roughness of piston rod directly affects reliability and the service life of the work of air spring. In prior art, the piston rod external part of air spring is exposed outside, and it is easily subject to use the pollution such as dust, chip in environment, and dust, chip adhere to and make the frictional force of piston rod turnover cylinder barrel increase on the piston rod, flexible not smooth; It addition, the pollutant on piston rod also can be deposited in the junction of piston rod and cylinder barrel when passing in and out cylinder barrel, increase the reliability of piston rod and the friction effects air spring of cylinder barrel.
Summary of the invention
The technical problem to be solved is: in order to overcome the deficiency of piston rod vulnerable to pollution in prior art, and the present invention provides a kind of dust-protection type air spring.
This invention address that its technical problem technical scheme to be taken is: a kind of dust-protection type air spring, including cylinder barrel, piston rod and dirt-proof boot, described piston rod one end is provided with piston and is placed in inside described cylinder barrel, the other end extends described cylinder barrel and is provided with union joint, described dirt-proof boot is located on the piston rod between described cylinder barrel and described union joint, and described dirt-proof boot one end is fixing with described cylinder barrel outer wall is connected, the other end is fixing with described union joint to be connected, described dirt-proof boot length can stretch out the length change of cylinder barrel with piston rod, and the maximal tensility of described dirt-proof boot is identical with the max die travel distance of piston rod. dirt-proof boot is located at the outside of piston rod, avoid the adhesion of external dust foreign material, ensure that piston rod can stretch smoothly, and the length change that the length of dirt-proof boot can be stretched out in company with piston rod, thus ensureing that dirt-proof boot does not affect the effective travel of air spring. the maximal tensility of dirt-proof boot is identical with the max die travel distance of piston rod, when piston rod resets, owing to being subject to the restriction of dirt-proof boot, with the circle that touches within cylinder barrel, fierce collision will not occur, reduce noise.
Concrete, described dirt-proof boot includes a headring, several adapter rings and the tail ring that head and the tail connect successively, the front end of described headring is connected with described union joint, the rear end of described tail ring is connected with described cylinder barrel outer wall, described headring, adapter ring and tail ring connected adapter ring respectively is flexible to be connected, and the internal diameter of described headring, adapter ring and tail ring increases successively. Dirt-proof boot by multiple inside and outside sockets and successively end to end plastic circle ring form, and the headring at two ends and tail ring are connected with the union joint of air spring and cylinder barrel respectively, when piston rod stretches out, each annulus of dirt-proof boot is opened successively, cover on the piston rod stretched out, play dustproof effect.
Further, the front end of described adapter ring and tail ring is equipped with radially inwardly extending flange, described headring and adapter ring rear end are all circumferentially arranged with multiple projections, described projection extends radially outward, being equipped with the gathering sill mated with described projection on described adapter ring and tail ring inwall, the bearing of trend of described gathering sill is parallel with described dirt-proof boot axis.In flexible process, projection is placed in gathering sill, play the effect of guiding on the one hand, prevent the axial rotation between two annulus connected on the other hand, making connection unstable, when a pitch circle ring extends to greatest length, projection is stuck on flange, it is prevented that the disengagement between adjacent rings, and define the length that each annulus stretches out, play the effect of positioning limit.
Further, in order to prevent dirt-proof boot from coming off from air spring, described headring front end is provided with the front side board of annular, described tail ring rear end is provided with the back side panel of annular, the internal ring of described front side board and back side panel is equipped with the limited block of multiple radial direction, being equipped with annular boss on the outer wall of described cylinder barrel and union joint, the lateral surface of described boss is provided with L-shaped slideway, and described limited block can slidably reciprocate in described L-shaped slideway. It is connected to inside L-shaped slideway by boss, dirt-proof boot is prevented to be axially moveable in piston rod telescopic process, change the effective travel of piston rod, during installation, boss is directed at the opening of L-shaped slideway, pulls vertically, make boss arrive the corner of slideway, then edge counterclockwise or is rotated clockwise dirt-proof boot, makes boss enter the another side of slideway.
The invention has the beneficial effects as follows: a kind of dust-protection type air spring provided by the invention, adopt dirt-proof boot to be located at the outside of piston rod, play dust-proof effect in company with piston rod is flexible together, simultaneously, it is subject to the restriction of dirt-proof boot when piston rod resets and stretches out, reduces noise.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of preferred embodiment;
Fig. 2 is the structural representation of headring;
Fig. 3 is the structural representation of adapter ring;
Fig. 4 is the structural representation of tail ring;
Fig. 5 is boss and L-shaped slideway structure schematic diagram outside cylinder barrel.
In figure: 1, cylinder barrel, 2, piston rod, 3, dirt-proof boot, 31, headring, 32, adapter ring, 33, tail ring, 34, flange, 35, protruding, 36, gathering sill, 4, piston, 5, union joint, 6, fairlead, 7, front side board, 8, back side panel, 9, limited block, 10, boss, 11, L-shaped slideway, 12, lip circle, 13, touch circle.
Detailed description of the invention
Presently in connection with accompanying drawing, the present invention is described in detail. This figure is the schematic diagram simplified, and the basic structure of the present invention is only described in a schematic way, and therefore it only shows the composition relevant with the present invention.
As Figure 1-5, a kind of dust-protection type air spring of the present invention, including cylinder barrel 1, piston rod 2 and dirt-proof boot 3, described piston rod 2 one end is provided with piston 4 and is placed in described cylinder barrel 1 inside, the other end extends described cylinder barrel 1 and is provided with union joint 5, cylinder barrel 1 is divided into rod chamber and rodless cavity by piston 4, fairlead 6 it is connected with from front to back in turn in rod chamber, lip circle 12 and touch circle 13, described dirt-proof boot 3 is located on the piston rod 2 between described cylinder barrel 1 and described union joint 5, and described dirt-proof boot 3 one end is fixing with the outer wall of described cylinder barrel 1 rod chamber is connected, the other end is fixing with described union joint 5 to be connected, described dirt-proof boot 3 length can stretch out the length change of cylinder barrel 1 with piston rod 2, and the maximal tensility of described dirt-proof boot 3 is identical with the max die travel distance of piston rod 2.
As in Figure 2-4, described dirt-proof boot 3 includes a headring 31, several adapter ring 32 and tail rings 33 that head and the tail connect successively, the front end of described headring 31 is connected with described union joint 5, the rear end of described tail ring 33 is connected with described cylinder barrel 1 outer wall, described headring 31, adapter ring 32 and tail ring 33 be the connected flexible connection of adapter ring 32 respectively, and the internal diameter of described headring 31, adapter ring 32 and tail ring 33 increases successively.
Further, the front end of described adapter ring 32 and tail ring 33 is equipped with radially inwardly extending flange 34, described headring 31 and adapter ring 32 rear end are all circumferentially arranged with multiple protruding 35, described protruding 35 extend radially outward, being equipped with on described adapter ring 32 and tail ring 33 inwall and described protruding 35 gathering sills 36 mated, the bearing of trend of described gathering sill 36 is parallel with described dirt-proof boot 3 axis. The quantity of projection 35 and gathering sill 36 can be 2,3,4,5 or 6 groups, it is possible to determines according to actually used situation, and in the present embodiment, projection 35 and gathering sill 36 are 4 groups, are uniformly distributed circumferentially.
Further, described headring 31 front end is provided with the front side board 7 of annular, described tail ring 33 rear end is provided with the back side panel 8 of annular, the internal ring of described front side board 7 and back side panel 8 is equipped with the limited block 9 of multiple radial direction, the outer wall of described cylinder barrel 1 and union joint 5 is equipped with annular boss 10, the lateral surface of described boss 10 is provided with L-shaped slideway 11, and described limited block 9 can slidably reciprocate in described L-shaped slideway 11. Being illustrated in figure 5 the structural representation of the annular boss 10 on cylinder barrel 1 outer wall and L-shaped slideway 11, the annular boss 10 on union joint 5 is identical with on cylinder barrel 1 with L-shaped slideway 11. Boss 10 and L-shaped slideway 11 can be 2,3,4,5 or 6 groups, it is possible to determine according to actually used situation, and in the present embodiment, boss 10 and L-shaped slideway 11 are 4 groups, and are uniformly distributed.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff not necessarily departing from the scope of the present invention, can carry out various change and amendment completely. The technical scope of this invention is not limited to the content in description, it is necessary to determine its technical scope according to right.
Claims (4)
1. a dust-protection type air spring, it is characterized in that: include cylinder barrel (1), piston rod (2) and dirt-proof boot (3), described piston rod (2) one end is provided with piston (4) and is placed in described cylinder barrel (1) inside, the other end extends described cylinder barrel (1) and is provided with union joint (5), described dirt-proof boot (3) is located on the piston rod (2) between described cylinder barrel (1) and described union joint (5), and described dirt-proof boot (3) one end is fixing with described cylinder barrel (1) outer wall is connected, the other end is fixing with described union joint (5) to be connected, described dirt-proof boot (3) length can stretch out the length change of cylinder barrel (1) with piston rod (2), and the maximal tensility of described dirt-proof boot (3) is identical with the max die travel distance of piston rod (2).
2. dust-protection type air spring as claimed in claim 1, it is characterized in that: described dirt-proof boot (3) includes the headring (31) that head and the tail connect successively, several adapter rings (32) and a tail ring (33), the front end of described headring (31) is connected with described union joint (5), the rear end of described tail ring (33) is connected with described cylinder barrel (1) outer wall, described headring (31), adapter ring (32) and tail ring (33) connected adapter ring (32) respectively is flexible to be connected, and described headring (31), the internal diameter of adapter ring (32) and tail ring (33) increases successively.
3. dust-protection type air spring as claimed in claim 2, it is characterized in that: the front end of described adapter ring (32) and tail ring (33) is equipped with radially inwardly extending flange (34), described headring (31) and adapter ring (32) rear end are all circumferentially arranged with multiple projections (35), described projection (35) extends radially outward, described adapter ring (32) and tail ring (33) inwall are equipped with the gathering sill (36) mated with described projection (35), the bearing of trend of described gathering sill (36) is parallel with described dirt-proof boot (3) axis.
4. dust-protection type air spring as claimed in claim 3, it is characterized in that: described headring (31) front end is provided with the front side board (7) of annular, described tail ring (33) rear end is provided with the back side panel (8) of annular, the internal ring of described front side board (7) and back side panel (8) is equipped with the limited block (9) of multiple radial direction, the outer wall of described cylinder barrel (1) and union joint (5) is equipped with annular boss (10), the lateral surface of described boss (10) is provided with L-shaped slideway (11), described limited block (9) can slidably reciprocate in described L-shaped slideway (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222556.4A CN105673765A (en) | 2016-04-11 | 2016-04-11 | Dustproof type gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222556.4A CN105673765A (en) | 2016-04-11 | 2016-04-11 | Dustproof type gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673765A true CN105673765A (en) | 2016-06-15 |
Family
ID=56308838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610222556.4A Pending CN105673765A (en) | 2016-04-11 | 2016-04-11 | Dustproof type gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673765A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4936193A (en) * | 1988-02-10 | 1990-06-26 | Festo Kg | Protective device |
| WO1998003360A1 (en) * | 1996-07-24 | 1998-01-29 | Pilot Precision Dampers Limited | Extended travel damper |
| CN201146897Y (en) * | 2007-12-18 | 2008-11-12 | 上海丰达工艺礼品有限公司 | Connecting structure of hollow ball |
| CN101688636A (en) * | 2007-07-03 | 2010-03-31 | 异型弹簧有限公司 | Guard for gas cylinder actuators |
| CN202125493U (en) * | 2011-06-02 | 2012-01-25 | 刘伟 | Novel guide pipe connecting device |
| CN104033524A (en) * | 2014-06-26 | 2014-09-10 | 重庆长安汽车股份有限公司 | Vibration absorber dust-proof cover |
| CN104471275A (en) * | 2013-03-22 | 2015-03-25 | 住友理工株式会社 | Dust Cover |
| CN204372034U (en) * | 2014-12-26 | 2015-06-03 | 江苏纽泰格有限公司 | A kind of automatic buffer assembly Delta dust-proof cover |
| JP2015190553A (en) * | 2014-03-28 | 2015-11-02 | カヤバ工業株式会社 | Dust boot, method of manufacturing dust boot, and buffer |
| CN204921813U (en) * | 2015-07-14 | 2015-12-30 | 上汽通用汽车有限公司 | Dustproof air spring |
| CN205078682U (en) * | 2015-10-28 | 2016-03-09 | 浙江万向马瑞利减震器有限公司 | Novel dust cover mounting structure |
| CN205479096U (en) * | 2016-04-11 | 2016-08-17 | 常州气弹簧有限公司 | Dust -protection type air spring |
-
2016
- 2016-04-11 CN CN201610222556.4A patent/CN105673765A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4936193A (en) * | 1988-02-10 | 1990-06-26 | Festo Kg | Protective device |
| WO1998003360A1 (en) * | 1996-07-24 | 1998-01-29 | Pilot Precision Dampers Limited | Extended travel damper |
| CN101688636A (en) * | 2007-07-03 | 2010-03-31 | 异型弹簧有限公司 | Guard for gas cylinder actuators |
| CN201146897Y (en) * | 2007-12-18 | 2008-11-12 | 上海丰达工艺礼品有限公司 | Connecting structure of hollow ball |
| CN202125493U (en) * | 2011-06-02 | 2012-01-25 | 刘伟 | Novel guide pipe connecting device |
| CN104471275A (en) * | 2013-03-22 | 2015-03-25 | 住友理工株式会社 | Dust Cover |
| JP2015190553A (en) * | 2014-03-28 | 2015-11-02 | カヤバ工業株式会社 | Dust boot, method of manufacturing dust boot, and buffer |
| CN104033524A (en) * | 2014-06-26 | 2014-09-10 | 重庆长安汽车股份有限公司 | Vibration absorber dust-proof cover |
| CN204372034U (en) * | 2014-12-26 | 2015-06-03 | 江苏纽泰格有限公司 | A kind of automatic buffer assembly Delta dust-proof cover |
| CN204921813U (en) * | 2015-07-14 | 2015-12-30 | 上汽通用汽车有限公司 | Dustproof air spring |
| CN205078682U (en) * | 2015-10-28 | 2016-03-09 | 浙江万向马瑞利减震器有限公司 | Novel dust cover mounting structure |
| CN205479096U (en) * | 2016-04-11 | 2016-08-17 | 常州气弹簧有限公司 | Dust -protection type air spring |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |