CN208734790U - Damping piston and reciprocating damper - Google Patents
Damping piston and reciprocating damper Download PDFInfo
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- CN208734790U CN208734790U CN201821380348.8U CN201821380348U CN208734790U CN 208734790 U CN208734790 U CN 208734790U CN 201821380348 U CN201821380348 U CN 201821380348U CN 208734790 U CN208734790 U CN 208734790U
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Abstract
Damping piston, the damping piston are equipped with channel, and channel connection inner chamber of cylinder block is damped the two sides cavity of piston separation；It is equipped with the functional chamber filled with ER fluid in the damping piston, realizes and is slidingly sealed between the functional chamber and cylinder body；And the functional chamber is equipped with to be connected with circuit and is used to form the electrode unit insulated from each other of electric field with cylinder body.The reciprocating damper with above-mentioned damping piston is further related in the application.Compared with prior art, the utility model has the following beneficial effects: by the improvement to damping piston structure, the dosage of ER fluid is greatly reduced, is reduced costs；Simultaneously in the reciprocating damper in the utility model, functional chamber is isolated with inner chamber of cylinder block, and sealing structure is simple, and damping is controllable, and sealing structure is simple.
Description
Technical field
The utility model belongs to damping device technical field, and in particular to the damping piston in a kind of reciprocating damper,
The utility model further relates to the damper with the damping piston.
Background technique
Damper is a kind of resistance for providing and moving, the device of depletion kinergety.Space flight, aviation, military project, firearms,
It is all widely used in automobile and other industries.Damper generally can be divided into: spring-damper, hydraulic damper, pulse damper, rotation
Turn damper, wind damper, viscous damper etc..Wherein, viscous damper is according to fluid motion, especially when fluid passes through
The principle of throttle resistance can be generated when throttle orifice and manufactured, be a kind of damper relevant to damping piston movement velocity, answer
With extensive.
In the prior art, traditional viscous damper all uses damping piston structure, this needs the close of matched complexity
It is the disadvantages of seal structure, that there are linear velocities is low, low pressure seal failure, at high cost, maintenance trouble, while the dress of the damping piston with valve block
It sets and is not suitable for the damping oil that electric current change, magnetorheological etc. have particulate matter.In addition, the functional liquids such as ER fluid, magnetorheological fluid
Higher cost will cause installation cost increase, the market competitiveness caused to reduce when largely using.
In view of the above problems, the application has carried out further design to damper structure in the prior art, specifically pair
Damping piston structure in reciprocating damper is improved, and the improvement to reciprocating damper is thus also related to.
Utility model content
For the above deficiency in the prior art, the damping that the utility model provides in a kind of reciprocating damper is living
Plug has the functional chamber for storing damping fluid, and structure is simple, and sealing effect is good；The utility model is additionally provided with the resistance
The damper of Buddhist nun's piston, at low cost, damping is controllable.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals.
Damping piston, the damping piston are equipped with channel, and channel connection inner chamber of cylinder block is damped the two of piston separation
Side chamber body；It is equipped with the functional chamber filled with ER fluid in the damping piston, realizes that sliding is close between the functional chamber and cylinder body
Envelope；And the functional chamber is equipped with to be connected with circuit and is used to form the electrode unit insulated from each other of electric field with cylinder body.
In the reciprocating damping device of traditional damping piston, only there is a cavity in cylinder body, fill damping in the cavity
Liquid, damping liquid flows in the chamber of front and back after constantly passing through damping piston when damping piston moves back and forth, and generates damping,
This needs a large amount of damping liquid, and for damper of the ER fluid as damping fluid, cost is larger for this.The utility model
In piston structure in be equipped with functional chamber, which is isolated with inner chamber of cylinder block.Base oil is injected when use in inner chamber of cylinder block
Mother liquor (such as silicone oil), Injection Current becomes liquid in functional chamber, and the front and back chamber of inner chamber of cylinder block is connected to by channel, therefore is not influenced
The reciprocating motion of damping piston.When work, the ER fluid in functional chamber contacts generation damping viscous force with inboard wall of cylinder block, simultaneously
Electric field is generated between electrode unit between functional chamber and cylinder body, can achieve the purpose that adjust damping force by regulating and controlling electric field.
Preferably, being equipped with electrode plate in the functional chamber, gap, the gap are equipped between the electrode plate and inboard wall of cylinder block
It is communicated by through-hole with functional chamber, the electrode plate and inboard wall of cylinder block are respectively the positive and negative polarities of electrode unit, are passed through after energization
The change of electric field strength can control the damping force of the ER fluid in gap.
Preferably, the electrode plate is connected with conductor wire, the conductor wire by after the wire hole that is set in piston rod with
External power supply is connected.
Preferably, the electrode plate keeps insulating by insulating part and damping piston and piston rod.
Preferably, be slidingly sealed between damping piston and inboard wall of cylinder block by insulation guide collar and/or seal disc realization,
Guarantee that ER fluid will not or seldom leak outside.
Preferably, damping piston is equipped with deformable pressure transmitting set, the two sides of the pressure transmitting set are respectively
Functional chamber and inner chamber of cylinder block.Pressure transmitting set can transmit the pressure of base oil mother liquor and be applied on ER fluid.
Reciprocating damper involved in the utility model, the reciprocating damper include cylinder body, the work in cylinder body
It fills in, is fixed with piston rod on the piston, cylinder body is stretched out in one end of the piston rod；One end on the cylinder body close to piston is equipped with
For the end cap of sealing, the other end on cylinder body is equipped with the sealing element for sealing, and the piston is above-mentioned damping piston.
The damper structure of single-cylinder double-cavity formula is taken in the reciprocating damper, monotubular refers to a cylinder body (piston
Cylinder), two-chamber refers to thering is two cavitys of inner chamber of cylinder block and functional chamber in damper, and two cavity isolation.In cylinder when use
Base oil mother liquor (such as silicone oil) is injected in intracoelomic cavity, Injection Current becomes liquid in functional chamber, and the front and back chamber of inner chamber of cylinder block passes through
Channel connection, therefore the reciprocating motion of piston is not influenced, while can greatly reduce the dosage of ER fluid, reduce cost.
Preferably, the end cap is located at the side of cylinder body, end cap is equipped with the gas communicated with external air source/pressure source
Chamber, the air cavity are deformable piece towards the side of cylinder interior, can change shape according to air pressure size.
Compared with prior art, the utility model has the following beneficial effects: by the improvement to damping piston structure, greatly
The dosage for reducing ER fluid greatly, reduces costs；Simultaneously in the reciprocating damper in the utility model, functional chamber and cylinder
Intracoelomic cavity isolation, sealing structure is simple, and damping is controllable, and sealing structure is simple.
Detailed description of the invention
Fig. 1 is the appearance diagram of the damper in the utility model.
Fig. 2 is the schematic diagram of internal structure of the damper in the utility model.
Fig. 3 is the sectional structure chart of the damper in the utility model.
Fig. 4 is the schematic diagram in sectional structure chart at end cap position.
Fig. 5 is the schematic diagram in sectional structure chart at damping piston position.
Fig. 6 is the schematic diagram in sectional structure chart at sealing element position.
Fig. 7 is the end view of the damper in the utility model.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
Referring to Figure 1 to Figure 7, reciprocating damper involved in the utility model, specially a kind of single-cylinder double-cavity are reciprocating
Damper, including cylindric hollow cylinder body 13, the damping piston to move reciprocatingly in cylinder body 13, the damping piston
On be fixed with piston rod 2, cylinder body 13 is stretched out in one end of the piston rod 12；One end on the cylinder body 13 close to damping piston is equipped with
For the end cap of sealing, the other end on cylinder body 13 is equipped with the sealing element for sealing, wherein damping piston, end cap, sealing element
Deng specifically having following structure.
As shown in figure 5, damping piston, the damping piston is equipped with the channel 39 that pipe fitting is formed, which is connected to cylinder
Intracoelomic cavity is damped the two sides cavity 01,02 of piston separation；The functional chamber filled with ER fluid is equipped in the damping piston
03, it realizes and is slidingly sealed between the functional chamber 03 and cylinder body 13；And the functional chamber 03 is equipped with cylinder body 13 and is mutually used in conjunction with circuit
In the electrode unit insulated from each other for forming electric field；Specifically, in the functional chamber 03 be equipped with electrode plate 19, the electrode plate 19 with
Gap is equipped between inboard wall of cylinder block, which is communicated by through-hole 191 with functional chamber 03；The electrode plate 19 and inboard wall of cylinder block point
Not Wei electrode unit positive and negative polarities, can control the damping of the ER fluid in gap after energization by the change of electric field strength
Power.The electrode plate 19 is connected with by conducting bolt 37 with conductor wire 1, which passes through the electric wire in piston rod 2
Kong Houyu external power supply is connected, and electrode plate 19 keeps insulating by insulating part 28,29 and damping piston and piston rod 2.
It is slided in addition, being realized between the damping piston and inboard wall of cylinder block by insulation guide collar 17 and/or seal disc 21,38
Dynamic sealing；The damping piston is equipped with deformable pressure transmitting set 16, and pressure transmitting set 16 passes through bolt 14 and gasket
15 are fixed on damping piston side, have through hole on the bolt 14, this makes the two sides of pressure transmitting set 16 be respectively function
Chamber 03 and inner chamber of cylinder block.Fixed form between damping piston and piston rod 2 be conventional bolt and nut and nut shim 31 into
Row is fixed, and electrode cap 33 is equipped on fixed end face, and electrode cap 33 and seal disc 21 offset and enhance integral firmness.It is damping
The settable sealing ring to seal on the contact surface of piston and piston rod 2, accordingly in damping piston and inboard wall of cylinder block
It may also set up the sealing ring to seal on contact surface, it is close may also set up on contact surface of the electrode cap 33 in peripheral structure
The sealing ring of envelope effect.
In the above structure, specifically, the shape of damping piston be with the matched cylindrical-shaped structure of columned inner chamber of cylinder block,
The upper and lower ends of damping piston are slidingly sealed by seal disc 21,38 with inboard wall of cylinder block, are cricoid electricity between seal disc 21,38
Pole plate 19 is disposed with several through-holes 191 on the electrode plate 19 and communicates with functional chamber 03, the sky between electrode plate 19 and inboard wall of cylinder block
It is full of ER fluid in gap, plays damping in damping piston reciprocating motion.
As shown in figure 4, end cap 25,25 Screw assembly of end cap is equipped with and outside in the side of cylinder body 13, end cap 25
The air cavity 259 that gas source/pressure source communicates, the air cavity 259 are that deformable piece 23(can be by flexibility towards the side inside cylinder body 13
Rubber is made)；The deformable piece 23 includes the sticking part 231 being bonded with inboard wall of cylinder block, the pleated portions 232 of bending, concaves towards gas
Inner fovea part 233 in chamber 259.The end cap passes through towards hanging ring set 27, hanging ring set 27 is equipped on the side outside cylinder body 13
Screw element and end cap assemble, and the screw element is equipped with stomata 26.In addition, in order to improve sealing performance, in end cap 25 and cylinder body
Contact surface between 13 is equipped with sealing ring.Side where 13 upper end cover of cylinder body is equipped with component palette 22, for positioning and assembling.
As shown in fig. 6, sealing element, is slidingly sealed between the sealing element and piston rod 2 by sealing shroud realization.Specifically
, the sealing element includes the guide sleeve 8 and end cap 4 for being assemblied in 13 end of cylinder body；The sealing element is equipped with linear bearing 7.It is close
Big envelope specifically includes dust ring 3, seal washer 6,10,11, retaining ring 12, plays sealing function, correspondingly, in guide sleeve 8 and cylinder body
It is equipped with sealing ring between inner wall, increases sealing performance.
In the reciprocating damping device of traditional damping piston, only there is a cavity in cylinder body, fill damping in the cavity
Liquid, damping liquid flows in the chamber of front and back after constantly passing through damping piston when damping piston moves back and forth, and generates damping,
This needs a large amount of damping liquid, and for damper of the ER fluid as damping fluid, cost is larger for this.
As can be seen that in the utility model from the description of the above structure, the damper structure of single-cylinder double-cavity formula is taken, it is single
Cylinder refers to a cylinder body (damping piston cylinder) that two-chamber refers to thering is two cavitys of inner chamber of cylinder block and functional chamber in damper,
And two cavity isolation.Base oil mother liquor (such as silicone oil) is injected in inner chamber of cylinder block when use, electricity is injected in functional chamber 03
The front and back chamber of rheology liquid, inner chamber of cylinder block is connected to by channel 39, therefore does not influence the reciprocating motion of damping piston.
When work, the ER fluid in functional chamber 03 contacts generation damping viscous force, while functional chamber 03 with inboard wall of cylinder block
Electric field is generated between electrode unit between cylinder body 13, can achieve the purpose that adjust damping force by regulating and controlling electric field.Entirely
In the process, filled with high pressure gas (such as high pressure nitrogen) in air cavity, which makes deformable piece heave compressing base oil mother liquor,
So that the pressure of base oil mother liquor is higher than the pressure of the ER fluid in functional chamber, ER fluid can be sealed in functional chamber, be kept away
The use of complicated sealing structure is exempted from.Simultaneously by the setting of pressure transmitting set 16, pass through control 259 mesohigh gas of air cavity
Pressure can control the pressure of ER fluid.
The above, the reciprocating damper of single-cylinder double-cavity in the utility model, by the redesign to structure, significantly
ER fluid damping fluid is saved, the working environment of sealing element is improved, improves sealing effect.It is female by the base oil of high pressure
Liquid realizes the sealing to damping fluid, simplifies originally complicated sealing structure, more optimizes.When the damper in use, will hang
Ring set 27 is fixed in mechanical structure, 2 connection activity executive device of piston rod, and it is big then to automatically control voltage using sensor
Small, when electric field force increases, its own viscosity of damping fluid increases, to realize control and adjustment to damping force.
The protection scope of the utility model includes but is not limited to embodiment of above, and the protection scope of the utility model is to weigh
Subject to sharp claim, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that are each fallen within
The protection scope of the utility model.
Claims (8)
1. damping piston, which is characterized in that the damping piston is equipped with channel (39), which is connected to inner chamber of cylinder block quilt
The two sides cavity that damping piston separates；The functional chamber (03) filled with ER fluid, the functional chamber are equipped in the damping piston
(03) it realizes and is slidingly sealed between cylinder body (13)；And the functional chamber (03) is equipped with cylinder body (13) and is connected with circuit for shape
At the electrode unit insulated from each other of electric field.
2. damping piston according to claim 1, which is characterized in that electrode plate (19) are equipped in the functional chamber (03),
Gap is equipped between the electrode plate (19) and inboard wall of cylinder block, which is communicated by through-hole (191) with functional chamber (03).
3. damping piston according to claim 2, which is characterized in that the electrode plate (19) is connected with conductor wire (1), should
Conductor wire (1) after the wire hole in piston rod (2) with external power supply by being connected.
4. damping piston according to claim 2, which is characterized in that the electrode plate (19) passes through insulating part (28,29)
It keeps insulating with damping piston and piston rod (2).
5. damping piston according to claim 1, which is characterized in that led between damping piston and inboard wall of cylinder block by insulation
It is slidingly sealed to circle (17) and/or seal disc (21,38) realization.
6. damping piston according to claim 1, which is characterized in that damping piston is equipped with deformable pressure transmitting set
(16), the two sides of the pressure transmitting set (16) are respectively functional chamber (03) and inner chamber of cylinder block.
7. reciprocating damper, which includes cylinder body (13), the piston that is set in cylinder body (13), on the piston
Piston rod (2) are fixed with, cylinder body (13) are stretched out in one end of the piston rod (2)；One end on the cylinder body (13) close to piston is set
There is the end cap for sealing, the other end on cylinder body (13) is equipped with the sealing element for sealing, which is characterized in that the piston is
Damping piston described in any one of claim 1 to 6.
8. reciprocating damper according to claim 7, which is characterized in that the end cap is located at the side of cylinder body (13),
End cap is equipped with the air cavity (259) communicated with external air source/pressure source, the air cavity (259) side internal towards cylinder body (13)
For deformable piece (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821380348.8U CN208734790U (en) | 2018-08-27 | 2018-08-27 | Damping piston and reciprocating damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821380348.8U CN208734790U (en) | 2018-08-27 | 2018-08-27 | Damping piston and reciprocating damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734790U true CN208734790U (en) | 2019-04-12 |
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ID=66032443
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821380348.8U Active CN208734790U (en) | 2018-08-27 | 2018-08-27 | Damping piston and reciprocating damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579425A (en) * | 2019-10-23 | 2019-12-17 | 合肥工业大学 | Electrorheological fluid flow mode rheological property testing device |
| CN115289167A (en) * | 2022-01-04 | 2022-11-04 | 兰州理工大学 | Pore-combined magnetorheological fluid damper for four-bar lower artificial limb |
-
2018
- 2018-08-27 CN CN201821380348.8U patent/CN208734790U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579425A (en) * | 2019-10-23 | 2019-12-17 | 合肥工业大学 | Electrorheological fluid flow mode rheological property testing device |
| CN110579425B (en) * | 2019-10-23 | 2022-03-15 | 合肥工业大学 | Electrorheological fluid flow mode rheological property testing device |
| CN115289167A (en) * | 2022-01-04 | 2022-11-04 | 兰州理工大学 | Pore-combined magnetorheological fluid damper for four-bar lower artificial limb |
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