CN101749349B - Air damping buffer with piston rod air vent - Google Patents
Air damping buffer with piston rod air vent Download PDFInfo
- Publication number
- CN101749349B CN101749349B CN 200810243811 CN200810243811A CN101749349B CN 101749349 B CN101749349 B CN 101749349B CN 200810243811 CN200810243811 CN 200810243811 CN 200810243811 A CN200810243811 A CN 200810243811A CN 101749349 B CN101749349 B CN 101749349B
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- Prior art keywords
- piston
- piston rod
- cylinder body
- ring
- head
- 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.)
- Expired - Fee Related
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- 238000013016 damping Methods 0.000 title claims abstract description 36
- 239000010985 leather Substances 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The invention relates to an air damping buffer with a piston rod air vent, comprising a closed cylinder (4), a piston (8), a piston rod (2), a guiding sleeve (3), a front leather cup (5), a plug (12), a clamp block I (3.1), a clamp port I (4.1), a clamp block II (12.1), a clamp port II (4.3) and an air releasing ring slot (4.2), wherein the piston rod (2) is provided with a piston rod inner hole (2.1) on which a piston rod air vent (8.5) is arranged, the piston (8) is provided with a piston central blind hole in which a piston head (6) is fixedly connected, the outer edge of the piston (8) isprovided with a front piston ring (8.1), the back edge of the piston (8) is provided with a back piston ring (8.3), a float ring (9) is sheathed on a piston post (8.2) between the front piston ring (8.1) and the back piston ring (8.3), the piston head (6) is provided with a piston head central hole and a piston vertical hole (10) perpendicular to a shaft line, piston damping cores (7) are arranged in the central hole of the piston head (6) and the piston rod inner hole (2.1), and the outer diameter of the float ring (9) is greater than that of the piston head (6). The air damping buffer has the advantages of simple assembly, firm connection, obvious discharging function, stable damping effect and better tightness.
Description
(1) technical field
The present invention relates to a kind of air damping buffer with piston rod air vent.Be adapted to the various drawer guideways that need buffering, move door, draw position such as basket.This damper can utilize the viscous of damper inner fluid to flow and vacuum effect absorbs and the vibration energy of dissipate outside impulse force or distrubance source.Belong to the pneumatic metal hardware of sealed hydraulic technical field.
(2) background technique
Before the present invention makes, traditional gas buffer damper has the cylinder body of a sealing, inner surface of cylinder block is parallel with axis is provided with air bleed slot, this cylinder body inner room can be divided into first working room and second working room by the piston of slippage by one in cylinder body, this first working room and second working room are filled by gaseous fluid; This damper has a piston and a piston rod, this piston rod passes first working room and guides out from an end of cylinder body hermetically, be with air bag and leather cup on this piston, air bag and leather cup are close to sealing mutually during the piston rod pressurized, break away from venting during tension mutually.The air bag circumference is provided with the air bleed slot that parallels to the axis, and closely is provided with a guide sleeve and a preceding leather cup in the cylinder body between piston and piston rod Outlet successively.Guide sleeve is arranged on adjacent piston rod Outlet; This damper also have one with the cylinder body the other end with fixed the blocking of glue.This gas damper has following deficiency:
1, with guide sleeve and block and the casing wall of cylinder body between all by the drive fit assembling, particularly block and stick with glue knot.Assembling is complicated, connects insecurely, and can not play good seal action.
2, be one owing to the air bag on piston rod and piston and the piston is fixed, when piston and cylinder body usually relatively rotate, on the air bleed slot of air bag and the inboard wall of cylinder block air bleed slot parallel with axis be not overlap, be exactly to separate, discharge quantity is big during coincidence, damping force is very little; Discharge quantity is little during separation, and damping force is very big.Seriously influenced the damping of this damper, this is the problem of the maximum that all gas damping buffer exists in the prior art.
3, on piston by being provided with the effect that one-way valve structures air bag and leather cup play damping.Structure is comparatively complicated, the processing cost height.
4, the cup packing of piston rod one end is habitually practised single procheilon structure with a century, and sealing is poor, can not guarantee the working life that damper is long-term.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of guide sleeve is provided and block with cylinder body assembling simple and be connected firmly, drainage function is remarkable, damping is stable, better tightness, structure be more simply with the air damping buffer of piston rod air vent.
For achieving the above object, the technical solution adopted in the present invention is: a kind of air damping buffer with piston rod air vent, this damper has the cylinder body of a sealing, this cylinder body inner room can be divided into first A of working room and second B of working room by the piston of slippage by one in cylinder body, this A of first working room and second B of working room are filled by gas
This damper has a piston rod, and this piston rod passes first A of working room and guides out from an end of cylinder body hermetically,
Closely be provided with a guide sleeve and a preceding leather cup in the cylinder body between this piston and the piston rod Outlet successively, guide sleeve is arranged on adjacent piston rod Outlet,
This damper also have one with fixed the blocking of the other end of cylinder body,
It is characterized in that:
The middle protrusion at least of described guide sleeve outer rim is provided with two fixture block I, corresponds to this fixture block I, and described cylinder body is provided with two bayonet socket I that match with described fixture block I at least near corresponding position on the piston rod Outlet place casing wall,
The described middle protrusion at least of outer rim that blocks is provided with two fixture block II, corresponds to this fixture block II, and described cylinder body is provided with two bayonet socket II that match with described fixture block II at least near corresponding position on the place's of blocking casing wall,
Axially be provided with a gas at least near the place of blocking on the described cylinder body casing wall and discharge annular groove,
Described piston is near the affixed piston rod in one side of guide sleeve, piston rod right-hand member center is axially arranged with the piston rod endoporus, this piston rod endoporus hole wall is provided with piston rod air vent, described piston rod air vent is arranged at the piston left side, be connected with described piston rod endoporus, described piston another side central shaft is to being provided with a piston central blind hole, affixed piston head in this piston central blind hole, be provided with a preceding road piston ring in the middle of the outer rim of piston, the piston head trailing edge is provided with road, back piston ring, be arranged with a floating ring on the piston column of the piston between described preceding road piston ring and road, the back piston ring, described piston head is respectively equipped with the piston head upright opening of piston head center hole and vertical axis, in the center hole of piston head and the piston rod endoporus piston damping conductor is housed, described piston head center hole and piston head upright opening are connected with described piston rod endoporus
The external diameter of described floating ring is greater than the external diameter of described piston and piston head,
Leather cup is arranged to inside and outside lips structure before described.
Compare with existing gas damper, the present invention has following characteristics:
1, between the casing wall of guide sleeve and cylinder body by the fixture block on the guide sleeve and the bayonet socket corresponding matching on the casing wall, the bayonet socket corresponding matching of the fixture block that blocks and cylinder body casing wall, assembling is simple and be connected firmly.
2, on damper cylinder body casing wall, axially be provided with the gas annular near the place of blocking and discharge annular groove, be used for discharging fast gas.When piston moved to gas annular release annular groove place, this gas discharged annular groove and discharges gas suddenly fast, makes piston rod arrive the end, rear end fast, like this can be so that the better effects if of damper.
3, between piston and piston head, be provided with floating ring.Produce damping force during to left movement at piston, and the effect that discharges gas is played in the exhaust passage that piston head upright opening, piston head center hole, piston rod endoporus and piston rod air vent are formed, and the piston damping conductor can be guaranteed the accurate control of damping force value, and this is marrow of the present invention place.
4, leather cup is arranged to inside and outside lips structure, wherein outer lip and cylinder body casing wall seal, epipharynx then respectively with rod seal.Can reach double sealing effect like this, since favorable sealing property, the working life that can improve damper greatly.
5, owing to do not design air bleed slot on the casing wall, there is not design that the air bag of air bleed slot is arranged at its external diameter on the piston yet, when piston and cylinder body relatively rotate, there are not separation and the coincidence of two kinds of air bleed slots, there is not the suddenly big or suddenly small wild effect of damping force certainly yet.This is that the present invention compares one of the most outstanding advantage with other like products.
(4) description of drawings
Fig. 1 is the air damping buffer structural representation of band piston rod air vent of the present invention.
Fig. 2 is the C-C cut-away view of Fig. 1.
Fig. 3 is the D-D cut-away view of Fig. 1.
Reference character among the figure:
Preceding link 1
Piston rod 2
Guide sleeve 3
Cylinder body 4
Preceding leather cup 5
Piston head 6
Piston damping conductor 7
Piston 8
Floating ring 9
Piston head upright opening 10
Back seal ring 11
Block 12
Piston rod endoporus 2.1
Fixture block I3.1
Bayonet socket I4.1
Gas discharges annular groove 4.2
Bayonet socket II4.3
Preceding road piston ring 8.1
Piston column 8.2
Back road piston ring 8.3
Piston rod air vent 8.5
Fixture block II12.1.
(5) embodiment
Referring to Fig. 1, the air damping buffer of the band piston rod air vent that the present invention relates to, this damper has the cylinder body 4 of a sealing, these cylinder body 4 inner rooms by one can slippage in cylinder body 4 piston 8 be divided into first A of working room and second B of working room, this A of first working room and second B of working room are filled by gas
This damper has a piston rod 2, and this piston rod 2 passes first A of working room and guides out from an end of cylinder body 4 hermetically,
Closely be provided with a guide sleeve 3 and a preceding leather cup 5 in the cylinder body 4 between this piston 8 and the piston rod Outlet successively, guide sleeve 3 is arranged on adjacent piston rod Outlet,
This damper also have one with the other end of cylinder body 4 fixed block 12,
The middle protrusion at least of described guide sleeve 3 outer rims is provided with two fixture block I3.1, corresponds to this fixture block I3.1, and described cylinder body 4 is provided with two bayonet socket I4.1 that match with described fixture block I3.1 at least near corresponding position on the piston rod Outlet place casing walls,
The described middle protrusion at least of 12 outer rims that blocks is provided with two fixture block II12.1, corresponds to this fixture block II12.1, and the corresponding position is provided with two bayonet socket II4.3 that match with described fixture block II12.1 to described cylinder body 4 at least on 12 place's casing walls near blocking,
Axially be provided with gas release annular groove 4.2 at least near blocking 12 places on described cylinder body 4 casing walls,
Described piston 8 is near the affixed piston rod 2 in one side of guide sleeve 3, piston rod 2 right-hand member centers are axially arranged with piston rod endoporus 2.1, these piston rod endoporus 2.1 hole walls are provided with piston rod air vent 8.5, described piston rod air vent 8.5 is arranged at piston 8 left sides, be connected with described piston rod endoporus 2.1, described piston 8 another side central shafts are to being provided with a piston central blind hole, affixed piston head 6 in this piston central blind hole, be provided with a preceding road piston ring 8.1 in the middle of the outer rim of piston 8, piston head 6 trailing edges are provided with road, back piston ring 8.3, be arranged with a floating ring 9 on the piston column 8.2 of the piston 8 between described preceding road piston ring 8.1 and road, the back piston ring 8.3, described piston head 6 is respectively equipped with the piston head upright opening 10 of piston head center hole and vertical axis, in the center hole of piston head 6 and the piston rod endoporus 2.1 piston damping conductor 7 is housed, described piston head center hole and piston head upright opening 10 are connected with described piston rod endoporus 2.1
The external diameter of described floating ring 9 is greater than the external diameter of described piston 8 and piston head 6,
Leather cup 5 is arranged to inside and outside lips structure before described.
Working principle:
During work, external force promotes piston rod, piston rod is slided to the right in cylinder body, the preceding road piston ring on the adjacent piston of the floating ring on the piston left side, the interior casing wall sealing of floating ring external diameter and cylinder body, floating ring left side and the piston ring packing of preceding road, the gas in second B of working room is passed through by piston head upright opening 10, piston head center hole, piston rod endoporus 2.1 and the piston rod air vent 8.5 of piston head 6, enter first A of working room of cylinder body slowly, the piston damping conductor in this passage plays the effect of damping; When external force was big, this exhaust passage had little time exhaust, will produce negative pressure at first A of working room, and this negative pressure significantly hampers the movement velocity of piston, damping force enlarges markedly when why thrust is big reason that Here it is.When piston moved to this damper cylinder body and discharges annular groove near the gas that blocks the place, the gas in this damper cylinder body casing wall discharged annular groove and discharges gas suddenly fast, makes piston rod arrive the end, rear end fast.When external force is pulled out piston rod left, the back road piston ring of the adjacent piston crown of floating ring, owing to leave the gap blow-by between the piston column post of floating ring endoporus hole wall and piston, gas in first working room is gone into second working room through blow-by passage Kuai Su Jin, make very easily or damping force is very little pulls out piston rod, thereby damping when realizing pressing piston rod, the very little effect of not damping or damping force when drawing piston rod.
Claims (1)
1. air damping buffer with piston rod air vent, this damping buffer has the cylinder body (4) of a sealing, this cylinder body (4) inner room by one can slippage in cylinder body (4) piston (8) be divided into first working room (A) and second working room (B), this first working room (A) and second working room (B) are filled by gas
This damping buffer has a piston rod (2), and this piston rod (2) passes first working room (A) and guides out from an end of cylinder body (4) hermetically,
Closely be provided with a guide sleeve (3) and a preceding leather cup (5) in the cylinder body (4) between this piston (8) and the piston rod Outlet successively, guide sleeve (3) is arranged on adjacent piston rod Outlet,
This damping buffer also has fixed blocking of the other end (12) with cylinder body (4),
It is characterized in that:
At least protrude in the middle of described guide sleeve (3) outer rim and be provided with two fixture block I (3.1), correspond to this fixture block I (3.1), described cylinder body (4) is provided with two bayonet socket I (4.1) that match with described fixture block I (3.1) at least near corresponding position on the piston rod Outlet place casing wall
At least protrude in the middle of described blocking (12) outer rim and be provided with two fixture block II (12.1), correspond to this fixture block II (12.1), described cylinder body (4) locates near blocking (12) that the corresponding position is provided with two bayonet socket II (4.3) that match with described fixture block II (12.1) at least on the casing wall
Locate axially to be provided with at least gas release annular groove (4.2) near blocking (12) on described cylinder body (4) casing wall,
Described piston (8) is near the affixed piston rod in one side (2) of guide sleeve (3), piston rod (2) right-hand member center is axially arranged with piston rod endoporus (2.1), this piston rod endoporus (2.1) hole wall is provided with piston rod air vent (8.5), described piston rod air vent (8.5) is arranged at piston (8) left side, be connected with described piston rod endoporus (2.1), described piston (8) another side central shaft is to being provided with a piston central blind hole, affixed piston head (6) in this piston central blind hole, be provided with a preceding road piston ring (8.1) in the middle of the outer rim of piston (8), piston head (6) trailing edge is provided with a back road piston ring (8.3), be arranged with a floating ring (9) on the piston column (8.2) of the piston (8) between described preceding road piston ring (8.1) and the back road piston ring (8.3), described piston head (6) is provided with the piston head upright opening (10) of piston head center hole and vertical axis, in the center hole of piston head (6) and the piston rod endoporus (2.1) piston damping conductor (7) is housed, described piston head center hole and piston head upright opening (10) are connected with described piston rod endoporus (2.1)
The external diameter of described floating ring (9) is greater than the external diameter of described piston (8) and piston head (6),
Leather cup (5) is arranged to inside and outside lips structure before described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810243811 CN101749349B (en) | 2008-12-08 | 2008-12-08 | Air damping buffer with piston rod air vent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810243811 CN101749349B (en) | 2008-12-08 | 2008-12-08 | Air damping buffer with piston rod air vent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101749349A CN101749349A (en) | 2010-06-23 |
| CN101749349B true CN101749349B (en) | 2013-10-09 |
Family
ID=42476804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810243811 Expired - Fee Related CN101749349B (en) | 2008-12-08 | 2008-12-08 | Air damping buffer with piston rod air vent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749349B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649088A (en) * | 2020-05-25 | 2020-09-11 | 安徽合力股份有限公司 | A gas spring and a cab side door using the gas spring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1331397A (en) * | 1971-02-10 | 1973-09-26 | Corte Cosso Sas | Fluid pressure actuator |
| DE19721137A1 (en) * | 1997-05-21 | 1998-12-03 | Guenther Hahn | Fast-action position-locked gas spring |
| CN200996427Y (en) * | 2007-01-19 | 2007-12-26 | 卫德义 | Precision Hydraulic Damper |
| CN201027890Y (en) * | 2007-05-01 | 2008-02-27 | 伍志勇 | Furniture damper |
| DE102007024104A1 (en) * | 2006-09-19 | 2008-03-27 | Stabilus Gmbh | Adjustment device for adjusting component i.e. backrest, of motor vehicle, has flow regulator arranged in connection that is conducted from cylinder chamber to another cylinder chamber and is lockable in opposite flow direction by valve |
| CN201121677Y (en) * | 2007-11-26 | 2008-09-24 | 江阴强顺科技有限公司 | Pressure-adjustable gas spring |
| CN201335122Y (en) * | 2008-12-08 | 2009-10-28 | 江阴强顺科技有限公司 | Gas damping buffer with piston rod vent hole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005029467A1 (en) * | 2005-06-24 | 2007-01-04 | Suspa Holding Gmbh | Length adjustable gas spring |
-
2008
- 2008-12-08 CN CN 200810243811 patent/CN101749349B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1331397A (en) * | 1971-02-10 | 1973-09-26 | Corte Cosso Sas | Fluid pressure actuator |
| DE19721137A1 (en) * | 1997-05-21 | 1998-12-03 | Guenther Hahn | Fast-action position-locked gas spring |
| DE102007024104A1 (en) * | 2006-09-19 | 2008-03-27 | Stabilus Gmbh | Adjustment device for adjusting component i.e. backrest, of motor vehicle, has flow regulator arranged in connection that is conducted from cylinder chamber to another cylinder chamber and is lockable in opposite flow direction by valve |
| CN200996427Y (en) * | 2007-01-19 | 2007-12-26 | 卫德义 | Precision Hydraulic Damper |
| CN201027890Y (en) * | 2007-05-01 | 2008-02-27 | 伍志勇 | Furniture damper |
| CN201121677Y (en) * | 2007-11-26 | 2008-09-24 | 江阴强顺科技有限公司 | Pressure-adjustable gas spring |
| CN201335122Y (en) * | 2008-12-08 | 2009-10-28 | 江阴强顺科技有限公司 | Gas damping buffer with piston rod vent hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101749349A (en) | 2010-06-23 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Zhouzhuang Town, Jiangsu city of Jiangyin Province China 214423 Road No. 17 Applicant after: Jiangyin Huahong Qiangshun Technology Co., Ltd. Address before: 214446 Jiangsu Province Shi Zhuang Jiangyin Huagang Road No. 15 Applicant before: Jiangyin Qiangshun Technology Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANGYIN QIANGSHUN TECHNOLOGY CO., LTD. TO: JIANGYIN HUAHONG QIANGSHUN TECHNOLOGY CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214423 No. 17, Hua Hong Road, Zhouzhuang Town, Jiangyin City, Jiangsu. Patentee after: Jiangsu Hua Hongqiang Technology Co., Ltd. Address before: 214423 No. 17, Hua Hong Road, Zhouzhuang Town, Jiangyin City, Jiangsu. Patentee before: Jiangyin Huahong Qiangshun Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20181208 |