CN206320223U - Damping buffer with sealing ring - Google Patents
Damping buffer with sealing ring Download PDFInfo
- Publication number
- CN206320223U CN206320223U CN201621399191.4U CN201621399191U CN206320223U CN 206320223 U CN206320223 U CN 206320223U CN 201621399191 U CN201621399191 U CN 201621399191U CN 206320223 U CN206320223 U CN 206320223U
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- CN
- China
- Prior art keywords
- perisporium
- ring
- oil cylinder
- oil
- piston rod
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- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides that a kind of damping is good and the damping buffer with sealing ring of long service life, including oil cylinder, oil cylinder has the cavity of an open at one end, seal assembly is disposed with cavity from top to bottom, sponge and piston component, piston rod connects seal assembly, sponge and piston component, the opening end of seal assembly seal cavity, piston component includes connecting pole, O-ring and hitching post, one end of piston rod is connected on connecting pole, the other end of piston rod stretches out from opening end, hitching post is enclosed within one end of connecting pole, O-ring is arranged on the upper of connecting pole, O-ring is made up of soft material, the internal perisporium interference fit of O-ring and oil cylinder.Because O-ring is made up of soft material, the interior wall friction of O-ring and oil cylinder will not cause damage to oil cylinder inner wall, using damping buffer of the present utility model, and damping is good and long service life.
Description
Technical field
The utility model is related to a kind of buffer, especially a kind of damping buffer on door or drawer.
Background technology
Door or drawer etc. are during opening and closing to two extreme positions often due to inertia is excessive, speed, easily
Hand is crushed, damage is caused to human body, in some places needed peace and quiet, people also produce without hope there is when opening and closing door and window, drawer
Raw noise, it is another should avoid noise occasion be cinema's interior folding seat use.Therefore, often door and window, drawer or
One damping buffer is installed to reduce inertia during closing and slow down its speed in folding seat, prevent from crushing or noise production
It is raw.
Existing isolation damper is a kind of hydraulic damper, and isolation damper is included in oil cylinder, the seal assembly of oil cylinder
Cavity in be provided with piston component and the piston rod through seal assembly both sides, one end connection of the piston rod in cavity
There is piston component；In the cavity of oil cylinder, air bag or cavernous body are further fixedly arranged between piston component and seal assembly.
Piston component includes connecting pole and damping ring, and damping ring is made up of hard material, damping ring and oil cylinder inner wall interference
Coordinate, the oil circuit with certain path length and a cross-sectional area size, oil communication piston group are provided with damping ring
The both sides of part.
Because oil cylinder is full of hydraulic oil in seal assembly, after the inside cavity of oil cylinder is reached in piston rod, due to oil
The cumulative volume of cylinder interior is constant, and piston rod is stretched into, and the pressure for needing the contraction of air bag or cavernous body to go in holding chamber body is put down
Weigh, therefore the hydraulic oil below piston component is then reached at air bag or cavernous body by oil circuit, and to air bag or cavernous body
Extruded, and then completed the adjustment of oil pressure process inside oil cylinder.Because the section of oil circuit has been controlled with length to the flow of oil
Make, therefore the speed that pushes of piston rod is restricted, and forms damping buffering effect.
The problem of existing damping buffer is present be, damping ring for be made up of hard material and with the inwall interference of oil cylinder
Coordinate, with easily causing overheat in oil cylinder inner wall repeatedly friction process, cause cylinder wall to deform, change of the hydraulic oil from cylinder wall
Shaped position enters the top of piston component, causes the buffering effect of damping buffer to substantially reduce；In addition, damping ring and oil cylinder
Inwall is also easy to cause the abrasion of damping ring and oil cylinder inner wall in friction process repeatedly so that between damping ring and oil cylinder inner wall
Gap increases, again such that the buffering effect of damping buffer is substantially reduced.Therefore, often there is the longevity in existing damping buffer
The not high defect of life.
The content of the invention
The purpose of this utility model is to provide that a kind of damping is good and damping buffer of long service life.
To achieve these goals, damping buffer of the present utility model includes oil cylinder, and oil cylinder has a cavity, cavity
It is opening end towards axial one end end of oil cylinder, the axial other end of cavity towards oil cylinder is blind end, and opening end is by a sealing
Component is sealed, and cavity is fixed on the piston rod on piston component built with piston component and one end, and the other end of piston rod is from close
The centre of sealing assembly is passed；Wherein, piston component includes connecting pole, O-ring and hitching post, and connecting pole is fixedly connected on piston rod
One end, connecting pole is disposed with the first perisporium, the second perisporium and the 3rd perisporium from top to bottom, the first perisporium with diameter greater than
The diameter of two perisporiums, the diameter with diameter greater than the 3rd perisporium of the first perisporium, is provided between the first perisporium and the inwall of oil cylinder
Gap, hitching post is set on the 3rd perisporium, and O-ring is arranged on the second perisporium, is set between the internal perisporium of O-ring and the second perisporium
Gap is equipped with, the spacing between the lower surface of the first perisporium and the upper surface of hitching post is more than the thickness of O-ring, and O-ring is by soft
Material is made, and the internal perisporium interference fit of O-ring and oil cylinder, the periphery of the first perisporium sets multiple projections at equal intervals upwards,
It is provided with gap between the periphery wall of projection and the internal perisporium of oil cylinder, the first perisporium is internally provided with oil through, and oil through connects
The upper and lower end face of logical first perisporium；Sponge is provided between seal assembly and piston component.
As seen from the above technical solution, when piston rod is under pressure into cavity, O-ring is rubbed by oil cylinder internal perisporium
Wipe power and be close to the lower surface of the first perisporium upwards so that the O-ring projection that sets up the periphery of the first perisporium it
Between clearance seal, the gap and oil through that hydraulic oil can only be between O-ring and the second perisporium enter the upper of piston component
Side；When piston cylinder, which is pressurized, reaches the limit of position, piston rod is replied, and O-ring is close to downwards by the frictional force of oil cylinder internal perisporium
On the upper surface of hitching post, the gap between the projection that the periphery of the first perisporium is set up is opened, above piston component
A hydraulic oil part is flowed back in the cavity below piston component along original opposite mode, and another part is from the gap between projection
Flow back in the cavity below piston component.Because O-ring is made up of flexible material, with that will not be damaged in oil cylinder inner wall friction process
Oil cylinder inner wall, the heat produced that rubs is less.Therefore the damping buffer damping that the utility model is provided is good and uses the longevity
Life length.
Further scheme is that seal assembly includes sealing-plug, oil-sealing sleeve and sheath, and oil-sealing sleeve is made up of soft material,
Sealing-plug, oil-sealing sleeve and sheath are successively set on the opening end of oil cylinder from top to bottom.Oil-sealing sleeve is gradually reduced including a bore
Inner ring, piston rod passed through from inner ring, and piston rod is interference fitted with inner ring.
It can be seen that, the setting of seal assembly make it that the hydraulic oil in cavity is effectively sealed.
Further scheme is that pad is provided between sponge and piston component, between the internal perisporium and piston rod of pad
Gap is provided with, the periphery wall of pad and the internal perisporium of oil cylinder are interference fitted.
Further scheme is that the upper surface of hitching post is provided with multiple projections, raised relative with the lower surface of O-ring.Bolt
Through hole is provided between the upper and lower surface of post.
Brief description of the drawings
Fig. 1 is the structure chart of the damping buffer of embodiment of the present utility model.
Fig. 2 is that the damping buffer of embodiment of the present utility model omits the structure chart after housing.
Fig. 3 is the section of structure of the first working condition of the damping buffer of embodiment of the present utility model.
Fig. 4 is the section of structure of the second working condition of the damping buffer of embodiment of the present utility model.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
Referring to Fig. 1, Fig. 1 is the structure chart of the damping buffer of the present embodiment.Damping buffer has an oil cylinder, oil cylinder
With a housing 1, housing 1 surrounds the open cavity in a upper end, and the upper end of cavity is sealed by sealing-plug 31.The present embodiment
Damping buffer also have one from oil cylinder to the piston rod 2 overhang, piston rod 2 can along oil cylinder axially opposing housing 1
Slide.
Referring to Fig. 2, Fig. 2 is that the damping buffer of the present embodiment omits the structure chart after housing.From upper in the housing of oil cylinder
And under be disposed with seal assembly 3, sponge 4, pad 5 and piston component 6.Seal assembly 3 includes sealing-plug 31, oil-sealing sleeve 32
With sheath 33.
Piston component 6 includes connecting pole 61, O-ring 62 and hitching post 63, O-ring 62 can connecting pole 61 and hitching post 63 it
Between move up and down, it 62 is sealing ring that O-ring, which is,.The periphery of first perisporium 611 of connecting pole 61 is provided with many at equal intervals upwards
Individual projection 614, projection 614 is that oil groove 615, projection are formed between rectangle projection, two adjacent projections 614 in the present embodiment
Gap is provided between 614 periphery wall and the internal perisporium of oil cylinder.It is provided with multiple raised 631 on the upper surface of hitching post 63, it is convex
Play 631 relative with the lower surface of O-ring 62.
Referring to Fig. 3, Fig. 3 is the section of structure of the utility model damping buffer the first working condition of embodiment.Housing 1
Be internally formed roughly cylindrical cavity 10, cavity 10 towards axial one end of oil cylinder be opening end, the direction of cavity 10
The axial other end of oil cylinder is blind end.Opening end is sealed by seal assembly 3, and seal assembly 3 is wrapped successively from top to bottom
Include and annular protrusion 311 be provided with sealing-plug 31, oil-sealing sleeve 32 and sheath 33, the periphery wall of sealing-plug 31, annular protrusion 311 with
Annular groove 11 in the inner peripheral surface of housing 1 coordinates so that sealing-plug 31 is fixed on the opening end of housing 1.Oil-sealing sleeve 32 by
Soft material such as rubber, soft engineering plastics etc. are made, and oil-sealing sleeve 32 includes a diminishing inner ring of bore from top to bottom
321, piston rod 2 is passed through out of inner ring 321, and piston rod 2 is interference fitted with inner ring 321, and oil-sealing sleeve 32 is by in-oil cylinder hydraulic pressure
Oil seal, prevents hydraulic oil from seepage on the perisporium of piston rod 2.Sheath 33 is close to oil-sealing sleeve 32 and is arranged under oil-sealing sleeve 32
Side.The lower end of sheath 33 is provided with sponge 4, pad 5 is provided between sponge 4 and piston component 6, pad 5 is close to sea
Silk floss 4 is set, and gap 51, the periphery wall of pad 5 and the internal perisporium mistake of housing 1 are provided between the internal perisporium and piston rod of pad 5
It is full of cooperation.
The lower end of pad 5 is provided with piston component 6, and piston component 6 includes connecting pole 61, the O set gradually from top to bottom
Shape circle 62 and hitching post 63.Blind hole 610 is provided with the top axial of connecting pole 61, one end of piston rod 2 is fixedly connected on blind hole
In 610, in the present embodiment, piston rod 2 is interference fitted with blind hole 610, in other implementations, and piston rod 2 can be with
It is fixedly connected by binding agent with blind hole 611.Connecting pole 61 is disposed with the first perisporium 611, the second perisporium 612 from top to bottom
With the 3rd perisporium 613, the diameter with diameter greater than the second perisporium 612 of the first perisporium 612, the diameter of the second perisporium 612 greatly with or
Equal to the diameter of the 3rd perisporium 613.Hitching post 63 is set on the 3rd perisporium 613, and hitching post 63 is interference fitted with the 3rd perisporium 613.O
Shape circle 62 is arranged on the second perisporium 612, and gap 621 is provided between the internal perisporium of O-ring 62 and the second perisporium 612.First
Spacing between the lower surface of perisporium 611 and the upper surface of hitching post 63 is more than the thickness of O-ring 62.O-ring 62 is by flexible material
Such as rubber, soft engineering plastics are made, and O-ring 62 is flexible.The internal perisporium of O-ring 62 and oil cylinder is interference fitted.Hitching post 63
Upper and lower surface between be provided with through hole 632.First perisporium 611 is internally provided with oil through 616, oil through 616 connection the
The upper surface and lower surface of one perisporium 611, oil through 616 are connected with gap 621.
It is additionally provided with cavity 10 close to the position of blind end in block 7, the axial direction of block 7 and is provided with through hole 71, through hole 71
The diameter with diameter greater than the 3rd perisporium 613.In the present embodiment, because the depth of cavity 10 is deeper, therefore just need to set
Block 7, prevents that piston rod 2 from all extending into cavity 10.In other implementations, when the depth of cavity 10 is less deep
In the case of, even if the closing end in contact of piston component 6 and cavity 10, piston rod 2 some beyond openend, this feelings
Avoid the need for setting block 7 under condition.
Under first working condition, when piston rod 2 is under pressure and when stretching into cavity 10, O-ring 62 is by oil cylinder
The perisporium frictional force upward to its, so that O-ring 62 is close to the lower surface of the first perisporium 611 of connecting pole 61 upwards
On, O-ring 62 is by the oil groove 615 on the first perisporium 611（Referring to Fig. 2）Sealing.The hydraulic oil of the lower section of piston component 6 be squeezed from
The through hole 632 of hitching post 63 flows upwardly into the gap 621 between the perisporium 612 of O-ring 62 and second, then flows into logical oil from gap 621
In hole 616, the top of piston component 6 is then entered by oil through 616, finally the gap 51 between pad 5 and piston rod 2
The position of sponge 4 is entered, by compressed sponge 4 to supplement the volume that piston rod 2 is entered in cavity 10, to keep cavity 10
Interior oil pressure balance.Because oil through 616 is straight through hole, therefore the resistance that hydraulic oil is subject to is smaller, so the utility model
Damping buffer damping force it is smaller, be particularly suitable for use in the working environment of small damping, such as door or drawer that children use etc..
Straight oil through 616 make it that the processing of connecting pole 61 is also very convenient.
Referring to Fig. 4, Fig. 4 is the section of structure of the utility model damping buffer the second working condition of embodiment.When right
When piston rod 2 applies upward pulling force, piston rod 2 is moved upwards together with piston component 6 in cavity 10, and O-ring 62 is by oil
The internal perisporium of cylinder is to its downward frictional force, so that O-ring 62 is close on the upper surface of hitching post 63 downwards, O-ring 62
Separated with the lower surface of the first perisporium 611 of connecting pole 61 so that the oil groove 615 on the first perisporium 611 is turned on, in the second work
Under state, a part of hydraulic oil flows back to the lower section of piston component 6, another portion in the mode opposite with the first working condition
The hydraulic oil divided flows back to the lower section of piston component 6 by oil groove 615.In a second operative state, the return flow line of hydraulic oil compared with
Greatly, backflow resistance is smaller, piston rod 2 reset required for pulling force pushed than piston rod 2 needed for pressure it is small, piston rod 2 is answered
Position is easily.
Need explanation, in order to clearly state annexation between each part of damping buffer of the present utility model and
" from top to bottom ", " upward ", " downward ", " upper end ", " lower end " for being used in operation principle, embodiment etc. is stated only for this reality
For the placement direction for applying damping buffer in the accompanying drawing of example, when actually used, damping buffer can also be positioned to
Laterally, it is oblique etc., above-mentioned term position should not be used as to the limitation to damping buffer of the present utility model.
Finally it is emphasized that the foregoing is only preferred embodiment of the present utility model, this reality is not limited to
With new, for a person skilled in the art, the utility model can have various change and change, such as in connecting rod
Upper end fixes a barrier sheet to replace the first perisporium being relatively large in diameter, all within spirit of the present utility model and principle, institute
Any modifications, equivalent substitutions and improvements done etc., should be included within protection domain of the present utility model.
Claims (6)
1. the damping buffer with sealing ring, including：
Oil cylinder, the oil cylinder has cavity, the cavity towards axial one end of the oil cylinder be opening end, the cavity
The axial other end towards the oil cylinder is blind end, and the opening end is sealed by a seal assembly, and the cavity is built with work
Plug assembly and one end are fixed on the piston rod on the piston component, and the other end of the piston rod is from the seal assembly
Between pass；
It is characterized in that：
The piston component includes connecting pole, O-ring and hitching post, and the connecting pole is fixedly connected on one end of the piston rod,
The connecting pole is disposed with the first perisporium, the second perisporium and the 3rd perisporium from top to bottom, and the diameter of first perisporium is big
In the diameter of second perisporium, the diameter with diameter greater than the 3rd perisporium of first perisporium, first perisporium with
Gap is provided between the inwall of the oil cylinder, the hitching post is set on the 3rd perisporium, the O-ring is arranged on described
On second perisporium, gap, the lower surface of first perisporium are provided between the internal perisporium of the O-ring and second perisporium
Spacing between the upper surface of the hitching post is more than the thickness of the O-ring, and the O-ring is made up of flexible material, the O
The internal perisporium of shape circle and the oil cylinder is interference fitted；
The periphery of first perisporium sets multiple projections at equal intervals upwards, and the periphery wall of the projection is interior with the oil cylinder
It is provided with gap between perisporium, first perisporium is internally provided with oil through, and the oil through connects first perisporium
Upper surface and lower surface；
Sponge is provided between the seal assembly and the piston component.
2. damping buffer according to claim 1, it is characterised in that：
The seal assembly includes sealing-plug, oil-sealing sleeve and sheath, and the oil-sealing sleeve is made up of soft material, the sealing-plug,
The oil-sealing sleeve and the sheath are successively set on the opening end of the oil cylinder from top to bottom.
3. damping buffer according to claim 2, it is characterised in that：
The oil-sealing sleeve includes a diminishing inner ring of bore, and the piston rod is passed through from the inner ring, and the work
Stopper rod is interference fitted with the inner ring.
4. the damping buffer according to any one of claims 1 to 3, it is characterised in that：
Pad is provided between the sponge and the piston component, is set between the internal perisporium of the pad and the piston rod
There is gap, the internal perisporium of the periphery wall of the pad and the oil cylinder is interference fitted.
5. damping buffer according to claim 4, it is characterised in that：
The upper surface of the hitching post is provided with multiple projections, described raised relative with the lower surface of the O-ring.
6. damping buffer according to claim 5, it is characterised in that：
Through hole is provided between the upper and lower surface of the hitching post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621399191.4U CN206320223U (en) | 2016-12-19 | 2016-12-19 | Damping buffer with sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621399191.4U CN206320223U (en) | 2016-12-19 | 2016-12-19 | Damping buffer with sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206320223U true CN206320223U (en) | 2017-07-11 |
Family
ID=59258488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621399191.4U Expired - Fee Related CN206320223U (en) | 2016-12-19 | 2016-12-19 | Damping buffer with sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206320223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107499718A (en) * | 2017-08-25 | 2017-12-22 | 浤鑫电器（深圳）有限公司 | The Portable cup of vacuum-pumping |
| CN109770586A (en) * | 2017-11-10 | 2019-05-21 | 川湖科技股份有限公司 | Movable piece of furniture and its buffer unit |
| CN114750063A (en) * | 2022-06-13 | 2022-07-15 | 中国航发上海商用航空发动机制造有限责任公司 | Polishing device and polishing method |
-
2016
- 2016-12-19 CN CN201621399191.4U patent/CN206320223U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107499718A (en) * | 2017-08-25 | 2017-12-22 | 浤鑫电器（深圳）有限公司 | The Portable cup of vacuum-pumping |
| CN109770586A (en) * | 2017-11-10 | 2019-05-21 | 川湖科技股份有限公司 | Movable piece of furniture and its buffer unit |
| CN109770586B (en) * | 2017-11-10 | 2021-01-26 | 川湖科技股份有限公司 | Movable furniture part and buffer device thereof |
| CN114750063A (en) * | 2022-06-13 | 2022-07-15 | 中国航发上海商用航空发动机制造有限责任公司 | Polishing device and polishing method |
| CN114750063B (en) * | 2022-06-13 | 2022-09-13 | 中国航发上海商用航空发动机制造有限责任公司 | Polishing device and polishing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20211219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |