CN201396391Y - Hydraulic damper with excellent leak tightness - Google Patents
Hydraulic damper with excellent leak tightness Download PDFInfo
- Publication number
- CN201396391Y CN201396391Y CN2008202173202U CN200820217320U CN201396391Y CN 201396391 Y CN201396391 Y CN 201396391Y CN 2008202173202 U CN2008202173202 U CN 2008202173202U CN 200820217320 U CN200820217320 U CN 200820217320U CN 201396391 Y CN201396391 Y CN 201396391Y
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- piston
- cylinder body
- damper
- ring
- leather cup
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Abstract
The utility model relates to a hydraulic damper with excellent leak tightness, which is provided with a cylinder body (4), a piston (8), a piston rod (2), a guidance sleeve (3), a front leather cup (5), an elastic element (6), a middle leather cup or a fixed ring (7), a blanking element (12), a spacing piece (10) and a rear leather cup (11), wherein a fixture block (3.1) is arranged on the outer edge of the guidance sleeve (3), the cylinder body (4) is provided with a bayonet (4.1) which is matched with the fixture block (3.1), a fixture block (12.1) is arranged on the outer edge of the blanking element (12), the cylinder body (4) is provided with a bayonet (4.3), the wall of the damper cylinder body (4) is provided with a liquid releasing groove (4.2), the piston (8) is designed to be a transversely-arranged I-shaped structure and comprises a front and a rear piston rings (8.1 and 8.3) and an intermediate piston bolt (8.2), wherein a floating ring (9) is sleeved on the intermediate piston bolt, and the wall of the front piston ring is provided with a damping hole (8.4); and the front leather cup (5) and the idle and the rear leather cups (11) of the damper are designed to be of adouble-layer structure. The guidance sleeve and the blanking element are simple and firm to be connected with the wall of the cylinder body, the piston rod can be precisely positioned, and the dampingeffect and the leak tightness are good.
Description
(1) technical field
The present invention relates to a kind of damper.Be adapted to the various drawer guideways that need buffering, move door, draw position such as basket.Belong to the pneumatic metal hardware of sealed hydraulic technical field.
(2) background technique
Before the present invention makes, the cylinder body of a traditional sealing of hydraulic damping implement body, this cylinder body inner room can be divided into one first working room and one second working room by the piston of slippage by one in cylinder body, this first working room and second working room are filled by a kind of hydraulic 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, closely be provided with a guide sleeve in the cylinder body between this piston and the piston rod Outlet successively, a preceding leather cup, a retaining ring, an elastic element, guide sleeve is arranged on adjacent piston rod Outlet, this damper also have one with fixed the blocking of the cylinder body the other end.This hydraulic damper has following deficiency:
1, with guide sleeve and block and the casing wall of cylinder body between all by the drive fit assembling, assembling is complicated and connect insecure.
2, because elastic element is immersed in the liquid, the stroke of piston rod can not be accurately controlled.
3, on piston by being provided with the effect that one-way valve structures plays damping.Structure is comparatively complicated, and processing cost height and damping are also not ideal.
4, sealing cup is with habitually practising single procheilon structure, and sealing is poor, can not guarantee the working life of damper.
(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 and the casing wall of cylinder body between assembling simple and be connected firmly, the accurate good hydraulic damper of sealing of location, damping and good airproof performance of piston rod.
For achieving the above object, the technical solution adopted in the present invention is: the hydraulic damper that a kind of sealing is good, this damper has the cylinder body of a sealing, this cylinder body inner room can be divided into one first working room and one second working room by the piston of slippage by one in cylinder body, this first working room and second working room are filled by a kind of hydraulic fluid
This damper has a piston rod, and this piston rod passes first working room and guides out from an end of cylinder body hermetically,
Closely be provided with a guide sleeve, preceding leather cup, elastic element and a middle leather cup or a retaining ring 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 has one and cylinder body, and what the other end was fixed blocks,
It is characterized in that:
The middle protrusion at least of described guide sleeve outer rim is provided with two fixture blocks, corresponds to this fixture block, and this damper cylinder body is provided with two bayonet sockets that match with described fixture block 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 blocks, corresponds to this fixture block, and this damper cylinder body is provided with two bayonet sockets that match with described fixture block at least near corresponding position on the place's of blocking casing wall,
Axially be provided with a liquid release groove at least near the place of blocking on the described damper cylinder body casing wall, this liquid release groove and block between cylinder body in closely be provided with leather cup behind a pad and successively,
The piston of described damper is arranged to the wide structure of horizontal " worker " character wheel, twice piston ring and middle piston column before and after comprising, wherein the preceding road piston ring outer rim of adjacent piston rod is radially protruded at least and is provided with two projections, back road piston ring away from piston rod is arranged on middle piston column rear end, its outer rim is radially protruded at least and is provided with two projections formation, be equipped with a floating ring on middle piston column, the internal diameter of this floating ring is less than the diameter at the projection root place of described preceding road piston ring, the internal diameter of this floating ring is greater than the diameter at the projection root place of road, described back piston ring, the diameter that the external diameter of this floating ring is then located greater than the projection top of described preceding road piston ring and road, back piston ring leaves a damping hole at least on described preceding road piston ring wall.Like this, when external force is pressed into piston rod to the right, during the adjacent preceding road of floating ring piston ring, the inner wall sealing of floating ring outer rim and cylinder body, the right wall sealing of floating ring Zuo Bi and preceding road piston ring, liquid can only pass through from damping hole, has played good damping function; When external force is pulled out piston rod left, road, the adjacent back of floating ring piston ring, owing to leave the gap blow-by between floating ring endoporus hole wall and the piston column, leave the gap blow-by between the projection root of floating ring internal diameter and road, back piston ring, make and pull out piston rod very easily, thereby damping when realizing pressing piston rod, the effect of not damping when drawing piston rod.
The preceding leather cup of described damper and back leather cup all are arranged to inside and outside lips structure, wherein outer lip and cylinder body casing wall sealing, and epipharynx is then respectively with piston rod and block step and seal.Can reach the sealing effect that gets twice the result with half the effort like this, sealing good can be guaranteed the damper longer service life.
Described elastic element adopts spring, adjacent middle leather cup behind this spring, and leather cup is arranged to inside and outside lips structure in this.
Described elastic element adopts sponge, adjacent retaining ring behind this sponge, and the sponge center is provided with the support that is enclosed within on the axle.
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 casing wall sealing of floating ring external diameter and cylinder body, floating ring left side and the sealing of piston ring right side, preceding road, the hydraulic fluid in second working room enters first working room of cylinder body slowly by the outage between preceding road piston ring outer rim and the floating ring inner hole wall, and outage plays the effect of damping; When piston moves to this damper cylinder body when blocking the liquid release groove place at place, the liquid release groove in this damper cylinder body casing wall discharges liquid suddenly fast, and piston rod is resetted fast.When external force is pulled out piston rod left, road, the adjacent back of floating ring piston ring, owing to leave the gap blow-by between floating ring endoporus hole wall and the piston column, leave the gap blow-by between the projection root of floating ring internal diameter and road, back piston ring, liquid in first working room is gone into second working room through blow-by passage Kuai Su Jin, make and to pull out piston rod very easily, thus damping when realizing pressing piston rod, the effect of not damping when drawing piston rod.
Compare with existing hydraulic damper, the present invention has following characteristics:
1, between the casing wall of guide sleeve and cylinder body by fixture block and bayonet socket corresponding matching, block and the casing wall of cylinder body between by fixture block and bayonet socket corresponding matching, assembling is simple and be connected firmly.
2, on damper cylinder body casing wall, axially be provided with the liquid release groove, be used for discharging fast liquid near the place of blocking.When piston moved to liquid release groove place, this liquid release groove discharged liquid suddenly fast, and piston rod is resetted fast, like this can be so that the better effects if of damper.
3, piston is provided with floating ring.At the preceding road piston ring outer rim of piston and the outage between the floating ring inner hole wall, outage plays the effect of damping, and can guarantee that damping force is worth accurately control.
4, leather cup is arranged to inside and outside lips structure, wherein outer lip and cylinder body casing wall sealing, epipharynx is then respectively with piston rod and block step and seal.Can reach the sealing effect that gets twice the result with half the effort like this, favorable sealing property, the working life that can improve damper greatly.
5, this damper can utilize being stained with of the interior hydraulic fluid of damper to remain in a standstill and move the vibration energy that absorbs and dissipate outside impulse force or distrubance source.
(4) description of drawings
Fig. 1 is embodiment's one structural representation of hydraulic damper of the present invention.
Fig. 2 is the C-C cut-away view of Fig. 1.
Fig. 3 is the piston longitudinal section of the piston structure of the present invention's employing.
Fig. 4 is the D-D cut-away view of Fig. 3.
Fig. 5 is the E-E cut-away view of Fig. 3.
Fig. 6 is the leather cup longitudinal section of the lips structure of the present invention's employing.
Fig. 7 is embodiment's two structural representations of hydraulic damper of the present invention.
Fig. 8 is the F-F cut-away view of Fig. 7.
Reference character among the figure:
Preceding link 1
Piston rod 2
Preceding leather cup 5
Middle leather cup or retaining ring 7
Piston 8
Floating ring 9
Back leather cup 11
Fixture block 3.1
Bayonet socket 4.1
Liquid release groove 4.2
Bayonet socket 4.3
Forward and backward road piston ring 8.1,8.3
Piston column 8.2
Outage 8.4
Projection 8.1.1
Projection 8.3.1
Fixture block 12.1.
(5) embodiment
Embodiment one:
Referring to Fig. 1, the hydraulic damper that the sealing that the present invention relates to is good, the cylinder body 4 of the concrete sealing of this damper, these cylinder body 4 inner rooms by one can slippage in cylinder body 4 piston 8 be divided into one first A of working room and one second B of working room.Wherein first A of working room and second B of working room separately and by a kind of hydraulic fluid fill by piston 8.
This damper has a piston, 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, and the piston rod end is connecting preceding link 1.
Closely be provided with the preceding leather cup of a guide sleeve 3,5, a spring and a middle leather cup in the cylinder body 4 between piston 8 and the piston rod Outlet successively, guide sleeve 3 is arranged on adjacent piston rod Outlet, and middle leather cup 7 is arranged on adjacent piston 8 places.
At least be provided with in the middle of described guide sleeve 3 outer rims and protrude two fixture blocks 3.1, correspond to this fixture block 3.1, this damper cylinder body 4 is provided with two bayonet sockets 4.1 that match with described fixture block 3.1 at least near corresponding position on the piston rod Outlet place casing wall.Inlay by fixture block 3.1 and bayonet socket 4.1 between guide sleeve 3 and the cylinder body and cooperate assembling.
This damper also have one with cylinder body 4 the other ends fixed block 12, block middle two fixture blocks 12.1 that are provided with protrusion at least of 12 outer rims, the corresponding position is provided with two bayonet sockets 4.3 that match with described fixture block 12.1 at least on 12 place's casing walls near blocking corresponding to described these fixture block 12.1 these damper cylinder bodies 4.Block 12 with cylinder body 4 between inlay by fixture block 12.1 and bayonet socket 4.3 and to cooperate assembling.
Axially be provided with (having four among a figure) liquid release groove 4.2 at least near blocking 12 places on these damper cylinder body 4 casing walls, as Fig. 2.Be used for discharging fast liquid.Liquid release groove 4.2 and blocking closely is provided with leather cup 11 behind a pad 10 and successively in the cylinder body 4 between 12.Pad 10 is arranged on adjacent liquid release groove 4.2 places, and back leather cup 11 is arranged on step 12 places that block.
Referring to Fig. 3～5, the piston 8 of this damper is arranged to horizontal " worker " character wheel structure, and a twice piston ring 8.1,8.3 and a middle piston column 8.2 constitute before and after having.Wherein preceding road piston ring 8.1 outer rims of adjacent piston rod are radially protruded at least and are provided with two projection 8.1.1, back road piston ring 8.3 away from piston rod is radially to protrude at least in middle piston column 8.2 rear end outer rims to be provided with two projection 8.3.1 formation, be equipped with a floating ring 9 on middle piston column 8.2, the internal diameter of this floating ring 9 is less than the diameter at the projection 8.1.1 root place of described preceding road piston ring 8.1, the external diameter of this floating ring 9 is then greater than the projection 8.1.1 of described preceding road piston ring 8.1 and the diameter at place, piston ring 8.3 projection 8.3.1 tops, road, back, simultaneously, the internal diameter of this floating ring 9 is greater than the diameter at the projection 8.3.1 root place of road, described back piston ring 8.3, like this, when floating ring 9 adjacent preceding road piston rings 8.1, the casing wall sealing of floating ring 9 outer rims and cylinder body leaves a damping hole 8.4 at least on described preceding road piston ring wall; When road, floating ring 9 adjacent back piston ring 8.3, leave the gap blow-by between the diameter at the projection 8.3.1 root place of floating ring 9 internal diameters and road, back piston ring 8.3, stay a gap blow-by between the piston column 8.2 in the middle of floating ring 9 endoporus hole walls and preceding road piston ring 8.1 and road, the back piston ring 8.3.
Referring to Fig. 6, the preceding leather cup 5 of this damper, middle leather cup and back leather cup 11 all are arranged to inside and outside lips structure, as shown in Figure 4.Wherein outer lip and cylinder body 4 casing walls sealing, epipharynx then block step 12 sealings with piston rod 2 respectively.
Embodiment two:
Referring to Fig. 7, present embodiment and embodiment's one difference only is: use elastic element 6 springs instead sponge, the sponge center is provided with the support 13 that is enclosed within on the axle, guarantees that sponge axially be not compressed, leather cup is used retaining ring instead among the embodiment one, and retaining ring and cylinder body casing wall need not seal.
Claims (3)
1, the good hydraulic damper of a kind of sealing, this damper 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 one first working room (A) and one second working room (B), this first working room (A) and second working room (B) are filled by a kind of hydraulic fluid
This damper 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), a preceding leather cup (5), an elastic element (6) and middle leather cup or retaining ring (7) in the cylinder body (4) between described piston (8) and the piston rod Outlet successively, guide sleeve (3) is arranged on adjacent piston rod Outlet
This damper also have one with cylinder body (4), the other end is fixed blocks (12),
It is characterized in that:
At least protrude in the middle of described guide sleeve (3) outer rim and be provided with two fixture blocks (3.1), correspond to this fixture block (3.1), this damper cylinder body (4) is provided with two bayonet sockets (4.1) that match with described fixture block (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 blocks (12.1), correspond to this fixture block (12.1), this damper cylinder body (4) locates near blocking (12) that the corresponding position is provided with two bayonet sockets (4.3) that match with described fixture block (12.1) at least on the casing wall
Locate axially to be provided with at least a liquid release groove (4.2) near blocking (12) on described damper cylinder body (4) casing wall, this liquid release groove (4.2) and blocking closely is provided with leather cup (11) behind a pad (10) and successively in the cylinder body (4) between (12)
The piston of described damper (8) is arranged to the wide structure of horizontal " worker " character wheel, twice piston ring (8.1 before and after comprising, 8.3) and a middle piston column (8.2), wherein preceding road piston ring (8.1) outer rim of adjacent piston rod is radially protruded at least and is provided with two projections, back road piston ring (8.3) away from piston rod is arranged on middle piston column rear end, its outer rim is radially protruded at least and is provided with two projections formation, be equipped with a floating ring (9) on middle piston column, the internal diameter of this floating ring (9) is less than the diameter at the projection root place of described preceding road piston ring, the internal diameter of this floating ring (9) is greater than the diameter at the projection root place of road, described back piston ring, the diameter that the external diameter of this floating ring (9) is then located greater than the projection top of described preceding road piston ring and road, back piston ring
On described preceding road piston ring wall, leave a damping hole (8.4) at least;
The preceding leather cup (5) of described damper and middle leather cup and back leather cup (11) all are arranged to inside and outside lips structure.
2, the good hydraulic damper of a kind of sealing according to claim 1 is characterized in that: described elastic element (6) adopts spring, adjacent middle leather cup behind this spring.
3, the good hydraulic damper of a kind of sealing according to claim 1 is characterized in that: described elastic element (6) adopts sponge, adjacent retaining ring behind this sponge, and the sponge center is provided with the support (13) that is enclosed within on the axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008202173202U CN201396391Y (en) | 2008-12-01 | 2008-12-01 | Hydraulic damper with excellent leak tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008202173202U CN201396391Y (en) | 2008-12-01 | 2008-12-01 | Hydraulic damper with excellent leak tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396391Y true CN201396391Y (en) | 2010-02-03 |
Family
ID=41618900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008202173202U Expired - Fee Related CN201396391Y (en) | 2008-12-01 | 2008-12-01 | Hydraulic damper with excellent leak tightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396391Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429984B (en) * | 2008-12-01 | 2012-11-21 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN108457168A (en) * | 2018-01-15 | 2018-08-28 | 东南大学 | A kind of self-centering Effects of Viscous Fluid Damper |
| CN108518147A (en) * | 2018-01-18 | 2018-09-11 | 广州丹德自动化科技有限公司 | Cold-storage door Self-closing buffer |
-
2008
- 2008-12-01 CN CN2008202173202U patent/CN201396391Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429984B (en) * | 2008-12-01 | 2012-11-21 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN108457168A (en) * | 2018-01-15 | 2018-08-28 | 东南大学 | A kind of self-centering Effects of Viscous Fluid Damper |
| CN108457168B (en) * | 2018-01-15 | 2019-11-12 | 东南大学 | A kind of self-centering Effects of Viscous Fluid Damper |
| CN108518147A (en) * | 2018-01-18 | 2018-09-11 | 广州丹德自动化科技有限公司 | Cold-storage door Self-closing buffer |
| CN108518147B (en) * | 2018-01-18 | 2024-01-12 | 广州中臣丹德智能装备科技有限公司 | Self-closing buffer device for cold storage door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20101201 |