CN202055673U - Hydraulic damper - Google Patents
Hydraulic damper Download PDFInfo
- Publication number
- CN202055673U CN202055673U CN2011201457393U CN201120145739U CN202055673U CN 202055673 U CN202055673 U CN 202055673U CN 2011201457393 U CN2011201457393 U CN 2011201457393U CN 201120145739 U CN201120145739 U CN 201120145739U CN 202055673 U CN202055673 U CN 202055673U
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- China
- Prior art keywords
- piston
- sheet
- piston rod
- ring
- circular shaft
- 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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Abstract
The utility model discloses a hydraulic damper which comprises a piston cylinder, a piston and oil linked with the piston, wherein one end of the piston cylinder is closed, the other end of the piston cylinder is an open end for the piston to stretch and contract, and a sealing component is arranged at the open end; the piston consists of a piston head and a piston rod, wherein the piston head is arranged in the piston cylinder and at the side close to the sealed end, the piston rod is arranged at the side of the open end of the piston cylinder, and the piston head consists of a piston sheet I, a piston ring and a piston sheet II. The hydraulic damper has the advantages of stable damping speed and high control accuracy, thereby being widely applied to various door and window structures.
Description
Technical field
The utility model relates to a kind of hydraulic damper, relates in particular to a kind of hydraulic damper that is used for hinge for furniture is played cushioning effect.
Background technology
Furniture door or the needs of door in the daily life in order to open and to close, all hinge is installed in door edge, traditional door hinge mostly is spring hinge greatly, because spring hinge cushion effect instability, and excessive velocities, cause door to form strong wallop in the process of closing, long-term use causes the damage of door easily.Now; the hinge of hydraulic damper has appearred on the market being equipped with; shock-absorbing capacity improves greatly; can play the effect of shutter; but the piston oil duct boring ratio on the common hydraulic damper is straight, short, and oil hole is bigger, and logical speed oil is fast or slow; also can cause the buffer speed less stable, be difficult to the accuracy of its buffering of control.
The utility model content
Technical problem to be solved in the utility model is the defective that overcomes prior art, provides a kind of buffer speed stable, the hydraulic damper that control accuracy is high.
For solving the problems of the technologies described above, the utility model provides a kind of hydraulic damper, comprise piston rod, piston, with the fluid of piston interlock, described piston rod one end sealing, the other end is an openend, and is flexible for piston, is provided with seal member at described openend.Described piston is made up of piston head and piston rod, and wherein piston head is arranged on piston rod one end and near sealed end one side in the piston rod, and the other end of piston rod illustrates and can make reciprocal stretching motion from the piston rod open end.The place is provided with y-shaped ring and O-ring seals at piston rod inner opening end, and y-shaped ring and O-ring seals middle part are equipped with through hole, and piston rod passes the through hole of y-shaped ring and O-ring seals and can make reciprocal stretching motion in through hole.Piston head is made up of piston sheet I, piston ring, piston sheet II three parts, wherein the central portion of piston sheet II is provided with the circular shaft base of projection, the piston ring cuff matches on the circular shaft base and with the circular shaft base, piston sheet I closely is connected the other end of the relative piston sheet II of circular shaft base, piston ring be in the middle of piston sheet I and the piston sheet II and and the contact surface of piston sheet I and piston sheet II between have certain interval.
Be equipped with oil through I and oil through II on described piston sheet I and piston sheet II, be provided with the fluid groove on described circular shaft base, this fluid groove is communicated with oil through II straight line.
The diameter of described piston sheet I and piston sheet II all is slightly less than the internal diameter of piston rod, and the gap that piston sheet I and piston sheet II and piston rod inwall form is the fluid passage.
Described piston ring is an O shape loop-shaped, and the diameter of piston ring equates with the internal diameter of piston rod, piston ring and piston rod inner wall sealing.
The open slot of described oil through I is less, and the open slot of oil through II is big and be communicated with fluid groove straight line on the circular shaft base.
In the operating process: when piston advances, effect in the piston propulsive force, the fluid of sealed end one side is subjected to the effect of piston head pressure in the cylinder, fluid passes through fast from clearance channel and oil through I between piston sheet I and the piston rod inwall earlier, and this moment is because of oil liquid pressure, piston ring is adjacent to piston sheet II, and fluid is the fluid groove by the circular shaft base fast again, thereby the straight line percolation is crossed oil through II and flowed into fast in the opposite side cylinder then.These characteristics that advance fast just in time are fit to door hinge opens fast, thereby reaches the little needs that open the door fast of the resistance that opens the door.Otherwise, when piston is pulled out, because of oil liquid pressure, piston ring is adjacent to piston sheet I, and this moment is because of the shape of piston ring for O shape circle, when being adjacent to piston sheet I, just in time form the angle passage with piston sheet I and circular shaft base, fluid earlier slowly flows through oil through II, and the fluid groove of the circular shaft base of flowing through again arrives in the described angle passage, and fluid is around the angle axial flow, when fluid axially flows to oil through I place, just in time can slowly flow in the opposite side cylinder from less oil through I.These characteristics of slowly pulling out just in time are fit to the door hinge needs closes slowly, thereby has cushioned the speed of closing the door and protected Men Buhui to be subjected to large impact power and caused damage.
The oil through II relative direction setting vertically of the oil through I of described piston sheet I and described piston sheet II.When piston was made ahead running, the spacing between oil through I and the oil through II was far away more, and fluid is just long more by the distance around the angle passage, and the fluid passage rate is slow more, and the speed of piston operation is also just slow more; Otherwise the spacing between oil through I and the oil through II is near more, and fluid is just short more by the distance around the angle passage, and the fluid passage rate is just slightly fast, and the speed of piston operation is also slightly quicker.Oil through I and spacing between the oil through II are the different diverse locations that design two oil through spacings that require according to the buffer speed speed of different product.
Described seal member is stacked y-shaped ring and an O-ring seals up and down.Y-shaped ring has also played and has allowed speed that piston pulls out function more slowly.
Owing to adopt technique scheme, the utlity model has following beneficial effect:
1, simple in structure;
2, buffer speed is stable;
3, control accuracy height.
Description of drawings
Fig. 1 is the front view of a kind of hydraulic damper of the utility model;
Fig. 2 is the vertical view of a kind of hydraulic damper of the utility model;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Fig. 4 is the lateral view of a kind of hydraulic damper of the utility model;
Fragmentary cross-sectional view when Fig. 5 pulls out for piston;
Fig. 6 is the schematic diagram of the state that draws back of a kind of hydraulic damper of the utility model;
Fig. 7 is the schematic diagram of the state that draws back of a kind of hydraulic damper of the utility model;
Fig. 8 is the schematic cross-section of piston sheet I;
Fig. 9 is the schematic cross-section of piston sheet II.
Wherein: the 1-piston rod; The 2-piston rod; 3-piston sheet I; 4-piston sheet II; 5-Y shape sealing ring; 6-O shape sealing ring; The 7-piston ring; 81-oil through I; 82-oil through II; 91-circular shaft base; Fluid groove on the 92-circular shaft base; 93-angle passage.
The specific embodiment
As Fig. 1 to shown in Figure 9, a kind of hydraulic damper of the utility model, comprise piston rod 1, piston, with the fluid of piston interlock, described piston rod 1 one ends sealing, the other end is an openend, and is flexible for piston, is provided with seal member at described openend.Described piston is made up of piston head and piston rod 2, and wherein piston head is arranged on piston rod 2 one ends and near sealed end one side in the piston rod 1, and the other end of piston rod 2 illustrates and can make reciprocal stretching motion from the piston rod open end.The place is provided with y-shaped ring 5 and O-ring seals 6 at piston rod inner opening end, and y-shaped ring 5 and O-ring seals 6 middle parts are equipped with through hole, and piston rod passes the through hole of y-shaped ring 5 and O-ring seals 6 and can make reciprocal stretching motion in through hole.Piston head is made up of piston sheet I 3, piston ring 7, piston sheet II 4 three parts, wherein the central portion of piston sheet II 4 is provided with the circular shaft base 91 of projection, piston ring 7 cuffs match on circular shaft base 91 and with the circular shaft base, piston sheet I 3 closely is connected the other end of the relative piston sheet II of circular shaft base 91, piston ring 7 be in the middle of piston sheet I 3 and the piston sheet II 4 and and the contact surface of piston sheet I 3 and piston sheet II 4 between have certain interval.Be equipped with oil through I 81 and oil through II 82 on described piston sheet I 3 and piston sheet II 4, be provided with fluid groove 92 on described circular shaft base 91, this fluid groove 92 is communicated with oil through II 82 straight lines.
The diameter of described piston sheet I 3 and piston sheet II 4 all is slightly less than the internal diameter of piston rod 1, and piston sheet I 3 and piston sheet II 4 are the fluid passage with the gap that piston rod 1 inwall forms.
Described piston ring 7 is an O shape loop-shaped, and the diameter of piston ring 7 equates with the internal diameter of piston rod 1, piston ring 7 and piston rod 1 inner wall sealing.
The open slot of described oil through I 3 is less, and the open slot of oil through II 4 is big and be communicated with fluid groove 92 straight lines on the circular shaft base 91.
In the operating process: when piston advances, effect in the piston propulsive force, the fluid of sealed end one side is subjected to the effect of piston head pressure in the cylinder, fluid passes through fast from clearance channel and oil through I between piston sheet I and the piston rod inwall earlier, and this moment is because of oil liquid pressure, piston ring is adjacent to piston sheet II, and fluid is the fluid groove by the circular shaft base fast again, thereby the straight line percolation is crossed oil through II and flowed into fast in the opposite side cylinder then.These characteristics that advance fast just in time are fit to door hinge opens fast, thereby reaches the little needs that open the door fast of the resistance that opens the door.Otherwise, when piston is pulled out, because of oil liquid pressure, piston ring is adjacent to piston sheet I, this moment is because of the shape of piston ring for O shape circle, when being adjacent to piston sheet I, just in time form 93 (as shown in Figure 5) of angle passage with piston sheet I and circular shaft base, fluid slowly flows through earlier oil through II, the fluid groove of circular shaft base of flowing through again arrives in the described angle passage, fluid is around the angle axial flow, when fluid axially flows to oil through I place, just in time can slowly flow in the opposite side cylinder from less oil through I.These characteristics of slowly pulling out just in time are fit to the door hinge needs closes slowly, thereby has cushioned the speed of closing the door and protected Men Buhui to be subjected to large impact power and caused damage.
The oil through II relative direction setting vertically of the oil through I of described piston sheet I and described piston sheet II.When piston was made ahead running, the spacing between oil through I and the oil through II was far away more, and fluid is just long more by the distance around the angle passage, and the fluid passage rate is slow more, and the speed of piston operation is also just slow more; Otherwise the spacing between oil through I and the oil through II is near more, and fluid is just short more by the distance around the angle passage, and the fluid passage rate is just slightly fast, and the speed of piston operation is also slightly quicker.Oil through I and spacing between the oil through II are the different diverse locations that design two oil through spacings that require according to the buffer speed speed of different product.
Claims (4)
1. hydraulic damper, comprise piston rod, piston, with the fluid of piston interlock, described piston rod one end sealing, the other end is an openend, flexible for piston is provided with seal member at described openend; Form by piston head and piston rod at described piston, wherein piston head is arranged in the piston rod and close sealed end one side, piston rod is arranged on piston rod openend one side, it is characterized in that: piston head is by piston sheet I, piston ring, piston sheet II three parts are formed, wherein the central portion of piston sheet II is provided with the circular shaft base of projection, the piston ring cuff matches on described circular shaft base and with the circular shaft base, described piston sheet I closely is connected the other end of the relative piston sheet II of described circular shaft base, described piston ring is in the middle of described piston sheet I and the described piston sheet II, and and the contact surface of described piston sheet I and described piston sheet II between have certain interval.
2. a kind of hydraulic damper according to claim 1 is characterized in that: be provided with the fluid groove on described circular shaft base, described fluid groove is communicated with oil through II straight line.
3. a kind of hydraulic damper according to claim 2 is characterized in that: the diameter of described piston sheet I and piston sheet II all is slightly less than the internal diameter of piston rod, and the gap that piston sheet I and piston sheet II and piston rod inwall form is the fluid passage.
4. a kind of hydraulic damper according to claim 1, it is characterized in that: described piston ring is an O shape loop-shaped, the diameter of piston ring equates with the internal diameter of piston rod, piston ring and piston rod inner wall sealing, described piston ring just in time form the angle passage with piston sheet I and circular shaft base when being adjacent to piston sheet I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201457393U CN202055673U (en) | 2011-05-03 | 2011-05-03 | Hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201457393U CN202055673U (en) | 2011-05-03 | 2011-05-03 | Hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055673U true CN202055673U (en) | 2011-11-30 |
Family
ID=45015648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201457393U Expired - Fee Related CN202055673U (en) | 2011-05-03 | 2011-05-03 | Hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202055673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587776A (en) * | 2012-03-07 | 2012-07-18 | 卫德义 | Ring groove type heavy-damping micropore hydraulic damper |
-
2011
- 2011-05-03 CN CN2011201457393U patent/CN202055673U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587776A (en) * | 2012-03-07 | 2012-07-18 | 卫德义 | Ring groove type heavy-damping micropore hydraulic damper |
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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: 20111130 Termination date: 20120503 |