CN201475230U - Damper and chair comprising same - Google Patents
Damper and chair comprising same Download PDFInfo
- Publication number
- CN201475230U CN201475230U CN2009201590299U CN200920159029U CN201475230U CN 201475230 U CN201475230 U CN 201475230U CN 2009201590299 U CN2009201590299 U CN 2009201590299U CN 200920159029 U CN200920159029 U CN 200920159029U CN 201475230 U CN201475230 U CN 201475230U
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- hole
- current limliting
- piston rod
- cross
- section area
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Abstract
The utility model provides a hydraulic damper, which comprises a cylinder body, a piston rod and a piston. The cylinder body is filled with liquid. The piston rod is fixedly connected with the piston and is located in the cylinder body. Wherein, the piston rod is provided with at least one first current limiting through hole which is communicated with at least one through hole in the piston rod through at least one pore canal in the piston rod. The top of the cylinder body is provided with a sealing ring and the bottom thereof is provided with a current limiting ring. The current limiting ring is provided with at least one second current limiting through hole and is connected with the hinge of the piston. The current limiting ring opens and closes around the joint point of the hinge. When the current limiting ring closes and tightly clings to the bottom surface of the position, the second current limiting through hole is communicated with the through hole of the piston. The utility model further provides the chair with the damper. The damper has the advantages of good heat dissipation, long service life, low manufacture cost and portability. The chair has moderate return speed and low noise.
Description
Technical field
The seat that the utility model relates to a kind of damper and contains this damper.
Background technique
Traditional hydraulic damper comprises a cylinder body, piston that can slide and a piston rod that is connected piston in cylinder body, this piston rod is centered on by a Returnning spring.Described cylinder body comprises the twin-tub structure with coaxial outer shell and inner casing.Be connected by spring and the compressing tablet that is arranged at the inner casing end between described outer shell and the inner casing.Piston is arranged in the described inner casing, and described piston is divided into one first working room and one second working room with described inner casing chamber, two working room's blanketing gas and hydraulic pressure fluid-mixing.Described piston rod passes the sealing of described first working room and guides out from the top of described inner casing.Axle is provided with two delivery holes on the described piston, and the piston both sides are respectively arranged with one group of spring sheet, and two groups of spring sheets cooperate with corresponding delivery hole respectively, play one-way valve.During work, external force promotes piston rod, and described piston is slided in the inner casing chamber; When external force was eliminated, the hydraulic fluid of described second working room promoted piston reverses direction and moves, and piston rod is resetted.
There are many defectives in this hydraulic damper, poor radiation for example, and what piston rod was frequent moves back and forth, and makes a large amount of heat of friction-produced between spring sheet and the hydraulic fluid, because cylinder body adopts the twin-tub structure, makes the people who is produced be difficult for distributing; Working life is short, and in frequent the moving back and forth of piston rod, two groups of spring sheets of piston both sides are broken through by the very big hydraulic fluid of impact force easily, thereby have shortened working life; The cost of production height, because cylinder body is the twin-tub structure, complex structure, consumptive material is many; Heaviness etc.
In addition, the damper that seat had that can overturn automatically is two knob springs at present, and described knob spring 1 is connected on the seat support, as shown in Figure 1.The seat return is realized by described knob spring is afterburning.This seat return speed is fast, noise is big.
The model utility content
The defective that damper poor radiation, working life are short, cost of production is high and heavy that the utility model provides in order to overcome prior art, provide that a kind of thermal diffusivity is good, long service life, damper that cost of production is low and light, and provide the automatic tip-up set that a kind of return speed is moderate, noise is little.
The utility model provides a kind of hydraulic damper 2, and this hydraulic damper comprises cylinder body 21, piston rod 22, piston 23, and fulls of liquid in the described cylinder body 21, described piston rod 22 are fixedlyed connected with described piston 23 and are positioned at described cylinder body 21; It is characterized in that: described piston rod 22 has at least one first current limliting through hole 221, and this first current limliting through hole 221 is communicated with at least one through hole 234 in the described piston 23 by at least one duct 222 of being located in the described piston rod 22; Be provided with seal ring 231 at the top of described cylinder body 21, be provided with current limliting circle 233 in the bottom of described piston 23, described current limliting circle 233 has at least one second current limliting through hole 235, and this current limliting circle is connected with described piston 23 loose-leaves, and this current limliting circle 233 is around the folding of loose-leaf tie point; When being close on the bottom surface of described piston 23, the described second current limliting through hole 235 communicates with the through hole 234 of described piston in that described current limliting circle 233 is closed.
The utility model also provides a kind of seat, and this seat comprises the chair back, seat support and chair leg, and wherein, described seat also comprises link 1, hydraulic damper 2, suspension ring 3 and rotary connector 4; The supporting frame that described link 1 comprises horizontal part and is positioned at these relative both sides of parts, one of them support frame as described above is connected with the described chair back, and another support frame as described above and described rotary connector 4 are pivotally connected; Described chair leg is connected with the horizontal part of described link 1; The hydraulic damper that described hydraulic damper 2 provides for the utility model, and described hydraulic damper 2 is fixed in the seat, and an end of described piston rod 22 is connected with described suspension ring movable 3; Described rotary connector 4 comprises chooses axle 5, activity orientation axle 6 and seat support link 7; A described end of choosing axle 5 is fixedly connected on a side of the axial wall of described activity orientation axle 6, its the other end and described suspension ring 3 are slidingly connected, one end of described seat support link 7 is connected on the axle of described activity orientation axle 6 rotatably, and its other end is connected with described seat support.
The damper that the utility model provides, because therefore the single cylinder structure of cylinder body, helps heat radiation, and light; Because the piston both sides do not have the spring sheet parts, after using the long period, also be not easy to take place to reveal the liquid phenomenon again, therefore, the long service life of this damper; And, by controlling the described first current limliting through hole, the quantity and the size in the duct in the duct in the piston rod, the duct in the piston and the current limliting circle, can obtain the damper of different demands, for example, if want to prepare the damper that only when descent of piston, has big damping, the larger-size first current limliting through hole can be set on piston rod, and a plurality of first current limliting through holes can be set; And a metering hole that size is less only is set on the current limliting circle; Particularly importantly, the damper damping that the utility model provides is good, does not have noise; In addition, the damper structure that the utility model provides is simple, be easy to preparation, and needed material is less, and therefore, the cost of production of this damper is lower.
The automatic tip-up set that the utility model provides is owing to have the damper that the utility model provides, and therefore, seat support return speed is moderate, and does not have noise.
Description of drawings
Fig. 1 is the seat support of automatic tip-up set of prior art and the schematic representation of damper, and wherein 1 is the knob spring.
Fig. 2 is the schematic representation of the damper that a kind of mode of execution provided.
Fig. 3 is the schematic representation of the rotary connector that adopted in a kind of mode of execution.
Fig. 4 (a) is damper, chair leg, horizontal connector, suspension ring and the interconnective schematic representation of rotary connector of the seat that one embodiment of the present invention provided; 4 (b) are the schematic representation of boss 50; 4 (c) are the schematic representation of link 1.
Fig. 5 is the schematic representation of the seat that a kind of mode of execution provided.
Embodiment
The utility model provides a kind of hydraulic damper (2), and this hydraulic damper comprises cylinder body 21, piston rod 22, piston 23, and fulls of liquid in the described cylinder body 21, described piston rod 22 are fixedlyed connected with described piston 23 and are positioned at described cylinder body 21; It is characterized in that: described piston rod 22 has at least one first current limliting through hole 221, and this first current limliting through hole 221 is communicated with at least one through hole 234 in the described piston 23 by at least one duct 222 of being located in the described piston rod 22; Be provided with seal ring 231 at the top of described cylinder body 21, be provided with current limliting circle 233 in the bottom of described piston 23, described current limliting circle 233 has at least one second current limliting through hole 235, and this current limliting circle is connected with described piston 23 loose-leaves, and this current limliting circle 233 is around the folding of loose-leaf tie point; When being close on the bottom surface of described piston 23, the described second current limliting through hole 235 communicates with the through hole 234 of described piston in that described current limliting circle 233 is closed.
According to the damping that will reach, the described first current limliting through hole 221 can be for a plurality of or one; For example, when when at piston stroking upward, not needing bigger damping, a plurality of described first current limliting through holes 221 can be set on described piston rod, the described first current limliting through hole 221 with large-size perhaps is set, a plurality of large-sized described first current limliting through holes 221 perhaps are set.Otherwise, one first current limliting through hole 221 is set on described piston rod, a plurality of undersized first current limliting through holes 221 perhaps are set, undersized first a current limliting through hole 221 perhaps is set.The described first current limliting through hole 221 can be arranged on the sidewall of piston rod, also can be on the wall of the upper end of described piston rod; The described first current limliting through hole 221 can extend to opposite side from a side of described piston rod, thereby forms multiple pattern with described duct 222, for example, and T shape, perhaps other regular figure; When the described first current limliting through hole 221 formed T shape with described duct 222, because oil can evenly advance from both sides/go out the piston rod, therefore, it was up reposefully or descending to help piston rod; Therefore, when the described first current limliting through hole 221 forms T shapes with described duct 222 for preferred embodiment.The shape of the described first current limliting through hole 221 can be different shape, for example, and circle, triangle, quadrilateral or changeable shape etc.
According to the damping that will reach, described duct 222 can be one or more.For example, when when at piston stroking upward, not needing bigger damping, a plurality of described ducts 222 can be set on described piston rod, the described duct 222 with large-size perhaps is set, a plurality of large-sized described ducts 222 perhaps are set.Otherwise, a duct 222 is set on described piston rod, a plurality of undersized ducts 222 perhaps are set, a undersized duct 222 perhaps is set.The position in described duct 222 can be positioned on the medial axis of described piston rod bar, also can be positioned at any position of the medial axis of departing from described piston rod; But in order to help the steady upstream or downstream of piston, a kind of preferred embodiment in, described duct 222 is positioned on the medial axis of described piston rod bar.Described duct 222 can extend to the other end of piston rod from the position that described piston rod connects piston always, also can extend to the described first current limliting through hole together with the position get final product; The shape in described duct 222 can be shapes such as vertical straight line, oblique line and curve.When not needing bigger damping function, described duct 222 is preferably vertical straight line duct and/or oblique line duct; When increasing damping, described duct 222 is preferably curve, for example, and the wave duct.
According to the damping that will reach, described through hole 234 can be one or more.For example, when when at piston stroking upward, not needing bigger damping, a plurality of described through holes 234 can be set on described piston rod, the described through hole 234 with large-size perhaps is set, a plurality of large-sized described through holes 234 perhaps are set.Otherwise, a through hole 234 is set on described piston rod, a plurality of undersized holes through hole 234 perhaps is set, a undersized through hole 234 perhaps is set.The position of described through hole 234 can be positioned on the medial axis of described piston rod bar, also can be positioned at any position of the medial axis of departing from described piston rod; But in order to help the steady upstream or downstream of piston, a kind of preferred embodiment in, described through hole 234 is positioned on the medial axis of described piston rod bar.The shape of described through hole 234 can be shapes such as vertical straight line, oblique line and curve.When not needing bigger damping function, described through hole 234 is preferably vertical straight line; When increasing damping, described through hole 234 is preferably curve, for example, and wave.
According to the damping that will reach, the described second current limliting through hole 235 can be one or more.For example, when when at descent of piston, not needing bigger damping, a plurality of described second current limliting through holes 235 can be set on described piston rod, the second current limliting through hole 235 with large-size perhaps is set, a plurality of large-sized described second current limliting through holes 235 perhaps are set.Otherwise, one second current limliting through hole 235 is set on described piston rod, a plurality of undersized second current limliting through holes 235 perhaps are set, undersized second a current limliting through hole 235 perhaps is set.
Described piston 23 comprises two partly, and a part is by there being plastic material to constitute, and another partly is made up of rigid material, and described plastic material can be rubber or polyvinyl chloride; Described rigid material can adopt any material used in the prior art, for example, can be metal.Described piston rod 22 can adopt any material used in the prior art, for example, can be metal.Described seal ring 231 and current limliting circle 233 can adopt any material used in the prior art, for example, can be rubber or polyvinyl chloride.
Described liquid can adopt any liquid used in the prior art, for example can be grease or water.Described grease can be diesel oil or machine oil.Examine opinion from environmental angle, described liquid is preferably water.
A kind of preferred embodiment in, be with pressure spring on the described piston rod 22, described spring 24 is positioned on the seal ring 231 that is installed on the described piston 23; Damper with this structure helps return, especially in the seat of upset automatically, helps the upset return of seat support.
Although the described first current limliting through hole 221 can be arranged on the sidewall that makes described liquid can enter described piston rod any position to the wall on the top of described piston rod, for example, the described first current limliting through hole 221 above piston rod sidewall of rigid element that can be positioned at described piston what position of taking up an official post; But a kind of preferred embodiment in, the horizontal position of the described first current limliting through hole 221 is higher than the horizontal position of described piston.When the horizontal position of the described first current limliting through hole 221 was positioned at the level of the part of being made up of plastic material of described piston, the internal diameter of the part that described plastic material is formed must be a bit larger tham the external diameter of described piston rod 22.
Described current limliting circle 233 is connected with described piston 23 loose-leaves can be any connection of being adopted in related domain, a kind of preferred embodiment in, described loose-leaf is pivotally connected.
Although without limits to the size of described duct 222, described through hole 234 and the described second current limliting through hole 235, but in the damper of the damping when a kind of damping when needing piston stroking upward is not more than descent of piston, the cross-section area in described duct 222 or its cross-section area summation are not less than cross-section area or its cross-section area summation of described through hole 234, and the cross-section area of described through hole 234 or its cross-section area summation are not less than cross-section area or its cross-section area summation of the described second current limliting through hole 235.
When damper provided by the utility model was used for a kind of seat of automatic upset, the cross-section area in described duct 222 or its cross-section area summation and the cross-section area of described through hole 234 or the cross-section area of its cross-section area summation and the described second current limliting through hole 235 or the ratio of its cross-section area summation were preferably (10-2): (10-2): 1.
The utility model also provides a kind of seat, and this seat comprises the chair back, seat support and chair leg, and wherein, described seat also comprises link 1, hydraulic damper 2, suspension ring 3 and rotary connector 4; The supporting frame that described link 1 comprises horizontal part and is positioned at these relative both sides of parts, one of them support frame as described above is connected with the described chair back, and another support frame as described above and described rotary connector 4 are pivotally connected; Described chair leg is connected with the horizontal part of described link 1; The hydraulic damper that described hydraulic damper 2 provides for the utility model, and described hydraulic damper 2 is fixed in the seat, and an end of described piston rod 22 is connected with described suspension ring movable 3; Described rotary connector 4 comprises chooses axle 5, activity orientation axle 6 and seat support link 7; A described end of choosing axle 5 is fixedly connected on a side of the axial wall of described activity orientation axle 6, its the other end and described suspension ring 3 are slidingly connected, one end of described seat support link 7 is connected on the axle of described activity orientation axle 6 rotatably, and its other end is connected with described seat support.
Described horizontal part can be various structures, for example, and platy structure, reticular structure etc.Support frame as described above can be boss, perhaps is the rod shaped structure of many bars.
Described seat support link 7 can be connected on the described activity orientation axle 6 rotatably with variety of way well known in the art, for example can be connected a side of the axial wall of described activity orientation axle 6, also can be connected the two ends of described activity orientation axle 6.When adopting the latter's Placement and support frame as described above be boss 50, be provided with restraining groove 51 in the both sides of described boss, so that described seat support link 7 moves up and down.
A kind of preferred embodiment in, described rotary connector 4 also comprises top spring 8, described top spring 8 helps seat support like this and steadily carries out up or descending with carrying out between described suspension ring 3 and described positioning shaft 6.A kind of preferred embodiment in, described top spring 8 is connected with described suspension ring 3.
One end of described piston rod 22 is connected with described suspension ring movable 3, the various connections of being adopted in can related domain, position, a kind of preferred embodiment in, described suspension ring 3 comprise sleeve and are positioned at thrust on the described sleeve outer wall; Be connected by bearing pin between one end of described piston rod 22 and the thrust of described suspension ring 3.
Claims (9)
1. a hydraulic damper (2), this hydraulic damper comprises cylinder body (21), piston rod (22), piston (23), the interior full of liquid of described cylinder body (21), described piston rod (22) are fixedlyed connected with described piston (23) and are positioned at described cylinder body (21); It is characterized in that: described piston rod (22) has at least one first current limliting through hole (221), and this first current limliting through hole (221) is communicated with at least one through hole (234) in the described piston (23) by at least one duct (222) of being located in the described piston rod (22); Be provided with seal ring (231) at the top of described cylinder body (21), be provided with current limliting circle (233) in the bottom of described piston (23), described current limliting circle (233) has at least one second current limliting through hole (235), and this current limliting circle is connected with described piston (23) loose-leaf, and this current limliting circle (233) is around the folding of loose-leaf tie point; When being close on the bottom surface of described piston (23), the described second current limliting through hole (235) communicates with the through hole (234) of described piston in that described current limliting circle (233) is closed.
2. hydraulic damper according to claim 1 (2) is characterized in that: described piston rod is with pressure spring on (22), and described spring (24) is positioned at and is installed on the described piston (23).
3. hydraulic damper according to claim 1 (2) is characterized in that: described current limliting circle (233) is connected to pivotally connected with described piston (23) loose-leaf.
4. according to claim 1,2 or 3 described hydraulic dampers (2), it is characterized in that, the cross-section area in described duct (222) or its cross-section area summation are not less than cross-section area or its cross-section area summation of described through hole (234), and the cross-section area of described through hole (234) or its cross-section area summation are not less than cross-section area or its cross-section area summation of the described second current limliting through hole (235).
5. hydraulic damper according to claim 4 (2), it is characterized in that the cross-section area of the cross-section area of the cross-section area of described duct (222) or its cross-section area summation and described through hole (234) or its cross-section area summation and the described second current limliting through hole (235) or the ratio of its cross-section area summation are (10-2): (10-2): 1.
6. seat, this seat comprises the chair back, seat support and chair leg, it is characterized in that, described seat also comprises link (1), hydraulic damper (2), suspension ring (3) and rotary connector (4); The supporting frame that described link (1) comprises horizontal part and is positioned at these relative both sides of parts, one of them support frame as described above is connected with the described chair back, and another support frame as described above and described rotary connector (4) are pivotally connected; Described chair leg is connected with the horizontal part of described link (1); Described hydraulic damper (2) is any described hydraulic damper among the claim 1-5, and described hydraulic damper (2) is fixed in the seat, and an end of described piston rod (22) is connected with described suspension ring activity (3); Described rotary connector (4) comprises chooses axle (5), activity orientation axle (6) and seat support link (7); A described end of choosing axle (5) is fixedly connected on a side of the axial wall of described activity orientation axle (6), its the other end and described suspension ring (3) are slidingly connected, one end of described seat support link (7) is connected on the axle of described activity orientation axle (6) rotatably, and its other end is connected with described seat support.
7. seat according to claim 6 is characterized in that, described rotary connector (4) also comprises top spring (8), and described top spring (8) is positioned between described suspension ring (3) and the described positioning shaft (6).
8. seat according to claim 6 is characterized in that, described top spring (8) is connected with described suspension ring (3).
9. seat according to claim 6 is characterized in that, described suspension ring (3) comprise sleeve and the thrust that is positioned on the described sleeve outer wall; Be connected by bearing pin between one end of described piston rod (22) and the thrust of described suspension ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201590299U CN201475230U (en) | 2009-06-25 | 2009-06-25 | Damper and chair comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201590299U CN201475230U (en) | 2009-06-25 | 2009-06-25 | Damper and chair comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475230U true CN201475230U (en) | 2010-05-19 |
Family
ID=42411477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201590299U Expired - Fee Related CN201475230U (en) | 2009-06-25 | 2009-06-25 | Damper and chair comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475230U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105433623A (en) * | 2015-12-29 | 2016-03-30 | 芜湖华强文化科技产业有限公司 | Differential lifting type seat control device |
| CN107136816A (en) * | 2017-06-30 | 2017-09-08 | 杭州飞神工业设计有限公司 | A kind of correcting sitting posture thing to sit on |
| CN107401579A (en) * | 2017-06-12 | 2017-11-28 | 宁波力减震器有限公司 | A kind of hydraulic pressure magnetic suspension way to play for time and its application apparatus |
| CN110300532A (en) * | 2017-01-19 | 2019-10-01 | 朴东宽 | The portable work chair of telescopic single leg |
| CN111765193A (en) * | 2020-06-19 | 2020-10-13 | 常州大学 | Suspension eddy current type piston damper |
-
2009
- 2009-06-25 CN CN2009201590299U patent/CN201475230U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105433623A (en) * | 2015-12-29 | 2016-03-30 | 芜湖华强文化科技产业有限公司 | Differential lifting type seat control device |
| CN110300532A (en) * | 2017-01-19 | 2019-10-01 | 朴东宽 | The portable work chair of telescopic single leg |
| CN110300532B (en) * | 2017-01-19 | 2022-06-17 | 朴东宽 | Portable work chair of telescopic single leg |
| CN107401579A (en) * | 2017-06-12 | 2017-11-28 | 宁波力减震器有限公司 | A kind of hydraulic pressure magnetic suspension way to play for time and its application apparatus |
| CN107136816A (en) * | 2017-06-30 | 2017-09-08 | 杭州飞神工业设计有限公司 | A kind of correcting sitting posture thing to sit on |
| CN111765193A (en) * | 2020-06-19 | 2020-10-13 | 常州大学 | Suspension eddy current type piston damper |
| CN111765193B (en) * | 2020-06-19 | 2021-11-30 | 常州大学 | Suspension eddy current type piston 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: 20100519 Termination date: 20130625 |