CN2697253Y - Air damper adjusting damping effect by positive/negative pressure - Google Patents
Air damper adjusting damping effect by positive/negative pressure Download PDFInfo
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- CN2697253Y CN2697253Y CN 200420028551 CN200420028551U CN2697253Y CN 2697253 Y CN2697253 Y CN 2697253Y CN 200420028551 CN200420028551 CN 200420028551 CN 200420028551 U CN200420028551 U CN 200420028551U CN 2697253 Y CN2697253 Y CN 2697253Y
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- cylinder block
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Abstract
The utility model provides an air damper adjusting damping effect by positive/negative pressure, comprising a cylinder block, a piston rod, and a return spring. The first rod end of the piston rod is connected with a piston, and an anastomosis landslide is arranged in the cylinder block and defines and divides the cylinder block into a first instant air chamber and a second instant air chamber; the return spring which elastically keeps the piston rod in an extreme position in the cylinder block in normal times is connected between the cylinder block and the piston rod; the first flow adjusting valve which is the first end device of the cylinder block is used to adjust the flow quality of the air which gets in and out of the first instant air chamber, and the second flow adjusting valve which is the second end device of the cylinder block is used to adjust the flow quality of the air which gets in and out of the second instant air chamber. The utility model can effectively avoid the fast and instant pull back of the door by the return spring, which avoids the damage of the structure of the door and which can not hurt the people who use the door.
Description
Technical field
The utility model relates to a kind of damping unit, relates in particular to a kind ofly can effectively avoid this be reset spring moment to retract fast, and avoids door body structure to damage, and the positive negative pressure of utilization that can not wound inlet/outlet body personnel is adjusted the air damper of damping.
Background technology
At present general cross pulling door or be articulated in pushing of doorframe with a rotating shaft, on this door by installation one resetting means, make this unlatching after, can automatically reset becomes to close the door state.This resetting means as shown in figure 14, include a cylinder block 91, the sliding piston 95 of establishing a piston rod 92 and being installed in piston rod 92 ends in this cylinder block 91, and make 91 of this piston rod 92 and this cylinder blocks, connect a back-moving spring 93, so as with this back-moving spring 93 when flat with in this cylinder block 91 of piston rod 92 retractions.Because the bottom device of above-mentioned cylinder block 91 has an air flow rate adjustment valve 94, when this piston rod 92 is outwards pulled out, can be with in the outside air suction cylinder block 91, this back-moving spring 93 is being resetted, when retracting piston rod 92 and closing door operation, owing to the air in the cylinder block 91 is compressed the flow that discharges, be subjected to the restriction of air flow rate adjustment valve 94, and make the air in the cylinder block 91 produce instantaneous " normal pressure " that is higher than the external world, it acts on piston 95 instantaneous total clean normal pressures then form damping to the return action of back-moving spring 93 effect, can make the action that retracts that this resets, discharge and slowly finish with the air of cylinder block 91 inside, thereby the action of closing the door can be eased up, smooth-going carrying out.
Yet in fact, when being drawn back owing to door, the deflection maximum of back-moving spring 93, its reseting elasticity is also maximum.Therefore when the hand that opens the door is decontroled door leaf, because the clean normal pressure that the initial stage recovery stroke countercylinder body 91 inner air compressions of piston 95 are produced is less, big reseting elasticity when being not enough to fully keep out back-moving spring 93 first putting, spring 93 " retracts " apace so piston 95 just is reset, and cause the close the door problem of excessive velocities of initial stage, the normal seismism that moment takes place except that easily causing the door body structure damage, is also very easily wounded the personnel of inlet/outlet body.
The utility model content
In order to overcome the above-mentioned shortcoming that existing sliding door resetting means exists, the utility model provides a kind of air damper that utilizes positive negative pressure to adjust damping, can effectively avoid this be reset spring moment to retract fast, and avoid door body structure to damage, can not wound the personnel of inlet/outlet body.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of air damper that utilizes positive negative pressure to adjust damping comprises: cylinder block; Piston rod, its first rod end is connected with a piston, slidingly identically places this cylinder block inside, and this cylinder block inside defined is separated into the first instantaneous air chamber and the second instantaneous air chamber; Back-moving spring is connected between this cylinder block and the piston rod, flexibly makes this piston rod keep extreme position at ordinary times in cylinder block; It is characterized in that: the first end device first flow control valve of described cylinder block, adjusting the air mass flow in the first instantaneous air chamber, second end device, second flow control valve of this cylinder block is to adjust the air mass flow in the second instantaneous air chamber.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, wherein the axis of centres of cylinder block is to wearing cylinder bores, supply the inside of identical ground of the piston sliding bush apparatus of piston rod first end in the cylinder bores of this cylinder block, in first ora terminalis of this cylinder bores, set first pedestal, make this cylinder block be positioned at zone between first pedestal, piston and cylinder bores, define and form the first instantaneous air chamber, this first pedestal device first flow control valve is to regulate the air mass flow in this first instantaneous air chamber; Second ora terminalis of this cylinder bores connects airtight sets second pedestal, the central authorities of this second pedestal are equipped with perforation, and on its hole wall, the ring set leak-proof gasket, with the body of rod of this piston rod of sliding sleeve airtightly, this cylinder block is positioned at the zone between second pedestal, piston and cylinder bores, defines to form the second instantaneous air chamber, in addition in this second pedestal interior arrangement, second flow control valve, to regulate the air mass flow in this second instantaneous air chamber.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, wherein the piston axis of centres of piston rod is to being arranged with trepanning, with this body of rod first rod end of socket, the periphery of this trepanning, radially be arranged with a plurality of locating slots,, bestow punching press, distortion so that in the corresponding position of this body of rod, make this body of rod and this piston, rivet mutually, be connected.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, and wherein back-moving spring is an extension spring, makes its first spring end hook joint on first pedestal of this cylinder block first end, and its second spring end hook joint is on the connection seat of this piston rod.
The positive negative pressure of aforementioned utilization is adjusted the air damper of damping, wherein be equipped with a plurality of attachment fasteners on the piston end surface of piston rod, this piston rod outwards slides after the distance, and this attachment fastener Elastic buckle one accordingly is installed on the locating button arm of cylinder block second end.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, and wherein the locating button arm is that one is connected with on the second pedestal end face that is fixed in cylinder block second end.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, further at least one joint middle cylinder or steam of sliding sleeve body axially between piston rod and cylinder block wherein, first end of this middle cylinder or steam body connects a piston, periphery ring set one leak-proof gasket of this piston, with closely connected in the cylinder bores of this cylinder block, axial slip, make the outer rim of this middle cylinder or steam body, sliding airtightly second end that places this cylinder block, the affixed airtightly pedestal of second end of this middle cylinder or steam body, and these pedestal central authorities wear the cover cave, with the body of rod slippage within it of this piston rod of socket airtightly.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, each middle cylinder or steam body wherein, and its second end is installed air mass flow respectively and is adjusted valve.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, and wherein each middle cylinder or steam body is equipped with an attachment fastener on the piston of its first end, and second end of this middle cylinder or steam body is provided with at least one locating button arm.
The positive negative pressure of aforesaid utilization is adjusted the air damper of damping, wherein the axis of centres of the piston of each middle cylinder or steam body first end is to being arranged with a trepanning, first end with this middle cylinder or steam body of socket, the periphery of this trepanning radially is arranged with a plurality of locating slots, with in the corresponding position of this middle cylinder or steam body, bestow punching press, distortion, this middle cylinder or steam body and this piston are interconnected.
The beneficial effects of the utility model are, can effectively avoid this be reset spring moment to retract fast, and avoid door body structure to damage, and can not wound the personnel of inlet/outlet body.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the schematic perspective view of the utility model first embodiment.
Fig. 2 is the longitudinal sectional drawing of the utility model first embodiment shown in Figure 1.
Fig. 3 is the enlarged diagram that circle shown in Figure 2 shows zone 3.
Fig. 4 is the enlarged diagram that circle shown in Figure 2 shows zone 4.
Fig. 5 is the enlarged diagram that circle shown in Figure 2 shows zone 5.
Fig. 6 is the schematic diagram that the utility model first embodiment shown in Figure 2 is pulled outwardly out piston rod.
Fig. 7 is the enlarged diagram (cylinder block and piston rod are the buckle state) that circle shown in Figure 6 shows zone 7.
Fig. 8 is the schematic diagram that retracts piston rod shown in Figure 3.
Fig. 9 is the second embodiment schematic diagram of the present utility model (back-moving spring difference).
Figure 10 is the 3rd an embodiment schematic diagram (more piece) of the present utility model.
Figure 11 is the sectional perspective schematic diagram that shows after the body of rod of piston rod and piston are riveted mutually.
Figure 12 is the sectional perspective schematic diagram after middle cylinder or steam body and piston are riveted mutually.
Figure 13 is the schematic diagram that the utility model is installed on cross pulling door.
Figure 14 is existing resetting means schematic diagram.
The number in the figure explanation:
10 cylinder block 10a, the first end 10b, second end
10c cylinder bores 11 first instantaneous air chamber 12 second instantaneous air chambers
13 first flow control valves, 14 second flow control valves
161 perforation of 15 first pedestals, 16 second pedestals
162 leak-proof gaskets, 17 locating button arms, 20 piston rods
201 connection seats, 21 bodies of rod, 22 pistons
221 leak-proof gaskets, 220 trepannings, 222 locating slots
23 attachment fasteners, 24 coupling heads, 30 back-moving springs
31 first spring ends, 32 second spring ends, 40 middle cylinder or steam bodies
41 pistons, 412 attachment fasteners, 413 trepannings
414 locating slots, 42 pedestals, 421 cover caves
43 air mass flows are adjusted valve 45 locating button arms
50 sliding doors
The specific embodiment
See also Fig. 1 to shown in Figure 13, the utility model comprises cylinder block 10, piston rod 20, piston 22 and back-moving spring 30.The sliding identically cylinder block 10 that places of first rod end of piston rod 20, and cylinder block 10 inside are separated into the first instantaneous air chamber 11 and the second instantaneous air chamber 12 with defining, and utilize back-moving spring 30, this piston rod 20 is resetted be retracted in this cylinder block 10.Back-moving spring 30 remains in maximum extension length (not shown in the figures) when certainly also can make piston rod 20 flat.
The air damper of adjusting damping when the positive negative pressure of above-mentioned utilization is used at closing time, fixture can be fixed or be installed in to cylinder block 10, and second rod end of piston rod 20 can be connected in 50 (as shown in figure 13) of sliding door or be articulated in rotating shaft on push (not shown in the figures) of doorframe.Like this, after door is unlocked, can piston rod 20 be resetted and be retracted in the cylinder block 10, with the operation of closing the door automatically.
To shown in Figure 8, the positive negative pressure of the utility model utilization is adjusted the air damper of damping as Fig. 1, and the first end 10a of its cylinder block 10 is device first flow control valves 13, to adjust the air mass flow in the first instantaneous air chamber 11; The second end 10b at cylinder block 10 then installs second flow control valve 14, to adjust the air mass flow in the second instantaneous air chamber 12.As shown in Figure 6, when the user is opening the door 40 operations and this piston rod 20 that links when outwards pulling out, except that the energy that the operator is put on door leaf is stored in the back-moving spring 30, also the while from extraneous suction air, enters in the first instantaneous air chamber 11 of cylinder block 10 air through first flow control valve 13.When the user no longer promotes, as shown in Figure 8, piston rod 20 is subjected to the effect of the elastic-restoring force of back-moving spring 30, return in the cylinder block 10, when returning, also simultaneously must be through second flow control valve 14, the external world is with isopyknic air, in the second instantaneous air chamber 12 of suction cylinder block 10 certainly.And this one retracts process, is a process slowly and stably.Because piston rod 20 is retracted in the stroke of cylinder block 10 inside by back-moving spring 30, the volume of the first instantaneous air chamber, 11 inside presents " normal pressure " owing to the displacement that is subjected to piston 22 diminishes; But this moment, the volume of the second instantaneous air chamber, 12 inside then becomes big and presents " negative pressure " because be subjected to the displacement of piston 22.Piston rod 20 is subjected to the double reaction plus of " normal pressure " and " negative pressure " simultaneously, therefore can stop effectively that this back-moving spring too fast undesirable condition that retracts door-plate of 30 moments takes place, thereby make in whole processes of closing the door all actions of closing the door of held stationary from start to finish.
Resetting means of the present utility model, wherein the central authorities of cylinder block 10 axially wear a cylinder bores 10c, with the piston 22 of ground sliding bush apparatus that coincide at piston rod 20 first ends, and set one first pedestal 15 in the first ora terminalis inside of this cylinder bores 10c, make this cylinder block 10 be positioned at zone between first pedestal 15, piston 22 and cylinder bores 10c, define and form the first instantaneous air chamber 11, and in this first pedestal 15, install a first flow control valve 13, to regulate the air velocity in this first instantaneous air chamber 11.
Above-mentioned cylinder block 10, second ora terminalis at its cylinder bores 10c, be to set one second pedestal 16 with connecting airtight, the central authorities of this second pedestal 16 are equipped with a perforation 161, and at its hole wall upper ring cap one leak-proof gasket 162, at this body of rod 21 of this piston rod 20 of 161 inner sliding sleeves of boring a hole, and make this cylinder block 10 be positioned at zone between second pedestal 16, piston 22 and cylinder bores 10c with airtightly, define and form the second instantaneous air chamber 12.In addition at this second pedestal, 15 interior arrangements, one second flow control valve 13, to regulate the air velocity in this second instantaneous air chamber 12.
Piston rod 20 of the present utility model comprises a body of rod 21, and the first rod end root edge of this body of rod 21 connects a piston 22, and periphery ring set one leak-proof gasket 221 of this piston 22 is with the hole wall periphery of closely connected cylinder bores 10c in this cylinder block 10, slide.Piston rod 20 of the present utility model, wherein piston 22 can be one-body molded with this body of rod 21, or as shown in figure 11, the axis of centres that makes this piston 22 is to being arranged with a trepanning 220, with this body of rod 21 of socket, and make the periphery of this trepanning 220, radially be arranged with a plurality of locating slots 222,, bestow punching press, distortion so that in the corresponding position of this body of rod 21, make this body of rod 21 and this piston 22 rivet mutually, fixed, the utility model is not limited to the connected mode of this body of rod 21 and this piston 22.
Back-moving spring 30 in the resetting means of the present utility model, adopt extension spring, its first spring end, 31 hook joints are on first pedestal 15 of these cylinder block 10 first ends, its second spring end 32 is that hook joint is on a connection seat 201 of this piston rod 20, so that at opening door operation, when being pulled outwardly out piston rod 20, this back-moving spring 30 that outwards stretches in the lump is to store the elastic energy that it resets.
As Fig. 3, shown in Figure 4, the utility model is on piston 22 end faces of this piston rod 20, can be equipped with a plurality of attachment fasteners 23, this piston rod 20 outwards slides after the distance, as shown in Figure 7, this attachment fastener 23 is Elastic buckle one devices accordingly at the locating button arm 17 of cylinder block 10 second ends, retracted by this back-moving spring 30 with this piston rod 20 of block resistance, the door that piston rod 20 second ends are connected, temporary transient parked in opening, person's application of force to be used, when pushing back door, this attachment fastener 23 and this locating button arm 17 are triped, and the spring 30 that is reset retracts in linkage, be the state of closing the door.
Above-mentioned locating button arm 17, but one is connected with on the end face of this second pedestal 16.
Extremely shown in Figure 10 as Fig. 8, resetting means of the present utility model, this piston rod 20 is 10 of this cylinder blocks, also axially sliding sleeve one saves (or more piece) middle cylinder or steam body 40, make first end of this middle cylinder or steam body 40 connect a piston 22, periphery ring set one leak-proof gasket 221 of this piston 22, with closely connected axially slippage in the cylinder bores 10c of this cylinder block 10 (or axially slippage in another middle cylinder or steam body 40 airtightly), and make outer rim at this middle cylinder or steam body 40, sliding airtightly second end that places this cylinder block 10 (or airtightly at second end of another middle cylinder or steam body 40), and the airtight affixed pedestal 42 of second end that makes this middle cylinder or steam body 40, these pedestal 42 central authorities wear a cover cave 421, with the body of rod 21 slippage in this cover cave 421 of this another middle cylinder or steam body of socket airtightly or this piston rod 20.The joint number of above-mentioned middle cylinder or steam body 40, the utility model is not limited.
Above-mentioned each middle cylinder or steam body 40 second end are also installed an air mass flow respectively and are adjusted valve 43, enter the air velocity of 20 in 40 of each middle cylinder or steam bodies or middle cylinder or steam body 40 and piston rod with adjusting.
The piston rod 20 that the utility model disclosed, first rod end of its body of rod 21, be that (coupling head 24 can be the shape that has annular groove shown in the figure in connection one coupling head 24, or the perforation shown in an other end), on being connected in a cross pulling door or pushing, the pattern of this coupling head be according to occasion be installed and change, the utility model is not limited.
On the piston 41 of first end of middle cylinder or steam body 40 of the present utility model, be equipped with an attachment fastener 412, with with this middle cylinder or steam body 40 when protruding, a locating button arm 17 of this cylinder block 10 of elasticity snapping accordingly, other is at second end of this middle cylinder or steam body 40, be provided with at least one locating button arm 45, with the attachment fastener 23 of snapping piston rod 20 (or attachment fastener 412 of another middle cylinder or steam body 40) accordingly, make the door that is open can be temporarily parked in the unlatching external position, when person's application of force to be used pushes back, each attachment fastener 412 of just triping, 23 with locating button arm 17,45, this piston rod 20 and each joint middle cylinder or steam body 40 can be retracted, reset.
Above-mentioned piston 41 central authorities that are connected in middle cylinder or steam body 40 first ends, axially be arranged with a trepanning 413, with at first end that makes this this middle cylinder or steam body 40 of trepanning 413 sockets, periphery ring set one leak-proof gasket 411 of piston 41, and radially be arranged with a plurality of locating slots 414 at the periphery of trepanning 413, with corresponding position at this middle cylinder or steam body 40, bestow punching press, distortion, make this middle cylinder or steam body 40 rivet mutually, be connected with this piston 41, the utility model does not limit the connected mode of this middle cylinder or steam body 40 and this piston 41.Also can be equipped with (also can not being provided with) a plurality of attachment fasteners 412 on piston 41 end faces, so that Elastic buckle locating button arm 45 accordingly.
To shown in Figure 9, be binodal flexible single group cylinder and piston as Fig. 1.See also shown in Figure 10ly, the utility model also can be applicable on the many groups cylinder and piston of multi-joint telescoping.
Resetting means of the present utility model, owing to adjust valve by the air mass flow that second end of cylinder block 10 or middle cylinder or steam body 40 is installed, when retracting piston rod 20 (stroke of promptly closing the door automatically) at back-moving spring 30, retract active force opposite effect power in side generation with this back-moving spring 30, to overcome existing door leaf after the moment unlatching, resetting means can produce a negative pressure retracting direction, promptly produce the active force that retracts the active force equidirectional with back-moving spring, the door leaf that retracts that causes back-moving spring big stroke of moment, can not produce the strenuous vibration phenomenon, obviously, the utlity model has novelty, creative, practicality.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. air damper that utilizes positive negative pressure to adjust damping comprises:
Cylinder block;
Piston rod, its first rod end is connected with a piston, slidingly identically places this cylinder block inside, and this cylinder block inside defined is separated into the first instantaneous air chamber and the second instantaneous air chamber;
Back-moving spring is connected between this cylinder block and the piston rod, flexibly makes this piston rod keep extreme position at ordinary times in cylinder block;
It is characterized in that:
The first end device first flow control valve of described cylinder block, adjusting the air mass flow in the first instantaneous air chamber, second end device, second flow control valve of this cylinder block is to adjust the air mass flow in the second instantaneous air chamber.
2. the positive negative pressure of utilization according to claim 1 is adjusted the air damper of damping, the axis of centres that it is characterized in that described cylinder block is to wearing cylinder bores, supply the inside of identical ground of the piston sliding bush apparatus of piston rod first end in the cylinder bores of this cylinder block, in first ora terminalis of this cylinder bores, set first pedestal, make this cylinder block be positioned at zone between first pedestal, piston and cylinder bores, define and form the first instantaneous air chamber, this first pedestal device first flow control valve is to regulate the air mass flow in this first instantaneous air chamber; Second ora terminalis of this cylinder bores connects airtight sets second pedestal, the central authorities of this second pedestal are equipped with perforation, and on its hole wall, the ring set leak-proof gasket, with the body of rod of this piston rod of sliding sleeve airtightly, this cylinder block is positioned at the zone between second pedestal, piston and cylinder bores, defines to form the second instantaneous air chamber, in addition in this second pedestal interior arrangement, second flow control valve, to regulate the air mass flow in this second instantaneous air chamber.
3. the positive negative pressure of utilization according to claim 1 is adjusted the air damper of damping, the piston axis of centres that it is characterized in that described piston rod is to being arranged with trepanning, with this body of rod first rod end of socket, the periphery of this trepanning, radially be arranged with a plurality of locating slots,, bestow punching press, distortion so that in the corresponding position of this body of rod, make this body of rod and this piston, rivet mutually, be connected.
4. the positive negative pressure of utilization according to claim 1 is adjusted the air damper of damping, it is characterized in that described back-moving spring is an extension spring, make its first spring end hook joint on first pedestal of this cylinder block first end, its second spring end hook joint is on the connection seat of this piston rod.
5. adjust the air damper of damping according to the positive negative pressure of the described utilization of claim 1, it is characterized in that being equipped with a plurality of attachment fasteners on the piston end surface of described piston rod, this piston rod outwards slides after the distance, and this attachment fastener Elastic buckle one accordingly is installed on the locating button arm of cylinder block second end.
6. the positive negative pressure of utilization according to claim 5 is adjusted the air damper of damping, it is characterized in that described locating button arm is that one is connected with on the second pedestal end face that is fixed in cylinder block second end.
7. the positive negative pressure of utilization according to claim 1 is adjusted the air damper of damping, it is characterized in that between described piston rod and cylinder block further axially at least one joint middle cylinder or steam of sliding sleeve body, first end of this middle cylinder or steam body connects a piston, periphery ring set one leak-proof gasket of this piston, with closely connected in the cylinder bores of this cylinder block, axial slip, make the outer rim of this middle cylinder or steam body, sliding airtightly second end that places this cylinder block, the affixed airtightly pedestal of second end of this middle cylinder or steam body, and these pedestal central authorities wear the cover cave, with the body of rod slippage within it of this piston rod of socket airtightly.
8. the positive negative pressure of utilization according to claim 7 is adjusted the air damper of damping, it is characterized in that described each middle cylinder or steam body, and its second end is installed air mass flow respectively and adjusted valve.
9. the positive negative pressure of utilization according to claim 7 is adjusted the air damper of damping, it is characterized in that described each middle cylinder or steam body, is equipped with an attachment fastener on the piston of its first end, and second end of this middle cylinder or steam body is provided with at least one locating button arm.
10. the positive negative pressure of utilization according to claim 7 is adjusted the air damper of damping, the axis of centres of piston that it is characterized in that described each middle cylinder or steam body first end is to being arranged with a trepanning, first end with this middle cylinder or steam body of socket, the periphery of this trepanning radially is arranged with a plurality of locating slots, with in the corresponding position of this middle cylinder or steam body, bestow punching press, distortion, this middle cylinder or steam body and this piston are interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028551 CN2697253Y (en) | 2004-03-18 | 2004-03-18 | Air damper adjusting damping effect by positive/negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420028551 CN2697253Y (en) | 2004-03-18 | 2004-03-18 | Air damper adjusting damping effect by positive/negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697253Y true CN2697253Y (en) | 2005-05-04 |
Family
ID=34771881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420028551 Expired - Fee Related CN2697253Y (en) | 2004-03-18 | 2004-03-18 | Air damper adjusting damping effect by positive/negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697253Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817517A (en) * | 2012-08-29 | 2012-12-12 | 厦门大学 | Variable damping two-way buffer |
| CN101970783B (en) * | 2008-02-05 | 2013-10-30 | 佐波有限公司 | Hinge for automatically closing door which opens in both directions and structure for door which opening in both directions |
| WO2014161304A1 (en) * | 2013-04-01 | 2014-10-09 | Zhong Yubo | Horizontal door closer structure |
| CN108331875A (en) * | 2018-02-06 | 2018-07-27 | 王海林 | A kind of positive/negative-pressure bimodulus buffer unit and application |
| CN110325703A (en) * | 2017-02-02 | 2019-10-11 | Ｉｎ＆泰克公司 | Linear actuators, and the off/on system including this linear actuators |
-
2004
- 2004-03-18 CN CN 200420028551 patent/CN2697253Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101970783B (en) * | 2008-02-05 | 2013-10-30 | 佐波有限公司 | Hinge for automatically closing door which opens in both directions and structure for door which opening in both directions |
| CN102817517A (en) * | 2012-08-29 | 2012-12-12 | 厦门大学 | Variable damping two-way buffer |
| WO2014161304A1 (en) * | 2013-04-01 | 2014-10-09 | Zhong Yubo | Horizontal door closer structure |
| US20160002966A1 (en) * | 2013-04-01 | 2016-01-07 | Yubo Zhong | Horizontal door closer structure |
| US9422758B2 (en) * | 2013-04-01 | 2016-08-23 | Yubo Zhong | Horizontal door closer structure |
| CN110325703A (en) * | 2017-02-02 | 2019-10-11 | Ｉｎ＆泰克公司 | Linear actuators, and the off/on system including this linear actuators |
| CN110325703B (en) * | 2017-02-02 | 2021-02-02 | Ｉｎ＆泰克公司 | Linear actuator, and closing/opening system comprising such a linear actuator |
| CN108331875A (en) * | 2018-02-06 | 2018-07-27 | 王海林 | A kind of positive/negative-pressure bimodulus buffer unit and application |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |