CN105387118B - A kind of adjustable shock absorber piston of damping - Google Patents
A kind of adjustable shock absorber piston of damping Download PDFInfo
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- CN105387118B CN105387118B CN201510830312.XA CN201510830312A CN105387118B CN 105387118 B CN105387118 B CN 105387118B CN 201510830312 A CN201510830312 A CN 201510830312A CN 105387118 B CN105387118 B CN 105387118B
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Abstract
The present invention provides a kind of adjustable shock absorber pistons of damping, belong to field of mechanical technique.The problem of damping adjustment structure that it solves existing damper is complicated, high production cost.This piston includes piston only and the piston rod that is threaded through on piston only, liquid pass hole is offered on piston only, loose slot is offered on an at least end face for piston only, liquid pass hole is located at the bottom of loose slot and is connected to loose slot, extensible member is equipped in loose slot, extensible member is embedded in the loose slot, and above-mentioned extensible member can be controlled by, which being additionally provided in loose slot, stretches to adjust the control piece of liquid pass hole openings of sizes.The openings of sizes of adjustable liquid pass hole when extensible member carries out telescopic variation, change the interior friction of liquid and interior wall friction and fluid molecule to change damping force, the size for adjusting damping reaches the adjustable effect of damping, this regulative mode structure is simple, at low cost that vehicle can be made to be suitable for a variety of different sections of highway.
Description
Technical field
The invention belongs to field of mechanical technique, are related to a kind of shock absorber piston, especially a kind of adjustable damper of damping
Piston.
Background technique
Uneven section is passed by vehicle traveling process to jolt, to slow down this onboard mounting shock absorber that jolts,
Damper is the damper element being widely used in automobile suspension system, principle be when vehicle frame and vehicle bridge do reciprocal relative movement and
Piston moves back and forth in the cylinder barrel of damper, and the piston of retarder generally comprises piston only, axially penetrates through on piston only
It is provided with several inner ring throttle orifices and outer ring throttle orifice, current inner ring throttle orifice and outer ring throttle orifice are generally cylinder
Hole, liquid and inner wall rub when so intracorporal oil liquid of damper shell is repeatedly flowed into recovery chamber from compression chamber by throttle orifice
The interior friction of scrape along fluid molecule just forms the damping force of vibration.
The structure of piston such as Authorization Notice No. is a kind of shock absorber piston disclosed in CN203979262U, including piston sheet
Body axially penetrates through several inner ring throttle orifices and outer ring throttle orifice being arranged on piston only, the inner ring throttle orifice and
Outer ring throttle orifice is horn-like hole, second end face of the inner ring throttle orifice from the first end face of piston only to piston only
Diameter is gradually increased, and first end face aperture of the outer ring throttle orifice from the second end face of piston only to piston only is gradually increased.
The size of usual damping force of vibration damper depends on the viscosity coefficient of choke area and oil liquid, and existing damping
Device at work, the viscosity kept stable of oil liquid, while the throttle hole area on the piston that oil liquid flows through from the above
Also it remains unchanged, therefore the damping force size kept stable of existing damper, this subtracts running car under different road conditions
Shaking device work cannot need what the damper of different damping can be only achieved to subtract in optimum state in different sections of highway driving process
Shake effect.
People design a kind of damper (application publication number CN104675913A) of damping-force adjustable in view of the above problems,
It is made of two parts, bumper assembly part and electromagnetic valve component part, and shock absorber section is equipped with piston by piston rod one end
Component passes through interior oily cartridge module, is packed into the middle oily cylinder with the sealing of interior oil jacket together, the piston rod together with piston component,
Interior oil cartridge module, is sequentially inserted in outer oily cartridge module, lid, guide sleeve, rubber ring at middle oily cartridge module simultaneously, passes through piston rod, will be outer
Oily nozzle portion sealing.It is noteworthy characterized by electromagnetism valve member structure division, and it can be separated with damper assembly part；And
After the two separation, two relevant intercommunicating pores are the schemes for how blocking its side through-hole after isolation.
Although above-mentioned patent solves the problems, such as that damping is immutable but there are still following shortcoming dampings to a certain extent
The damping of device is to make the damping of damper variable by bumper assembly and electromagnetic valve component two parts collective effect, this design
Structure is complicated, and processing cost is high.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, it is living to propose a kind of adjustable damper of damping
Plug, the technical problem to be solved by the present invention is to：How to simplify shock absorber structure, while reducing cost, realizes damping size
Controllability.
Object of the invention can be realized by the following technical scheme：A kind of adjustable shock absorber piston of damping, including work
Plug body and the piston rod being threaded through on piston only offer liquid pass hole on the piston only, which is characterized in that the work
Loose slot is offered on an at least end face for plug body, the liquid pass hole is located at the bottom of loose slot and is connected to loose slot, institute
It states and is equipped with extensible member in loose slot, the extensible member is embedded in the loose slot, and being additionally provided in the loose slot can control
Above-mentioned extensible member stretches to adjust the control piece of liquid pass hole openings of sizes.
Daming piston includes piston only and the piston rod that is threaded through on piston only, is offered on piston only through living
The liquid pass hole of plug body both ends of the surface, for oil liquid by liquid pass hole, an at least end face for piston only offers activity when pistons work
Slot, and liquid pass hole is located at movable trench bottom and is connected to loose slot, by loose slot when oil liquid passes through ontology, interior be equipped with of loose slot is stretched
Contracting part, extensible member are embedded in loose slot, and loose slot, which also has, can control the flexible control piece of extensible member, since liquid pass hole is located at
Movable trench bottom, the openings of sizes of adjustable liquid pass hole when extensible member carries out telescopic variation, by changing opening for liquid pass hole
Mouthful size and change the frictional force of liquid and inner wall and the internal friction of fluid molecule, so that the size for adjusting damping reaches damping
Adjustable effect, this regulative mode regulating effect is good, can make that vehicle is suitable for a variety of different sections of highway and structure is simple, only logical
Retarder damping is adjusted in the structure made a living beyond the Great Wall, and processing cost is low.
In the above-mentioned adjustable shock absorber piston of damping, cover board, institute are additionally provided in at least one side of the piston only
The through-hole for offering on cover board and being connected with the liquid pass hole is stated, the loose slot is in long strip, and the extensible member is in long strip
And length direction is consistent with loose slot, described extensible member one end be connected between cover board and the bottom wall of loose slot and with cover board 5 and
The bottom wall of loose slot 1b is fitted close.
Piston only both ends of the surface are equipped with cover board, and cover board has through-hole corresponding with liquid pass hole, and this design can be protected
Card oil liquid is flowed through from the through-hole of cover board, and loose slot is designed as strip, and the rectangular and loose slot of extensible member extension in long strip
Unanimously, it can guarantee the length for changing loose slot in extensible member elongation process, so that change activity trench bottom liquid pass hole uses greatly
It is small, change flow when oil liquid flows through loose slot, extensible member one end is connected between cover board and the bottom wall of loose slot and forms close-fitting
It closes, the one end that can fix extensible member extends it to the other end, to more preferably control the elongation of extensible member, and cover board and work
Dynamic groove bottom wall fixes extensible member jointly, is in extensible member in loose slot and is not easy to be detached from from loose slot, it is ensured that extensible member is normal
Running, the fixed other end in extensible member one end is flexible to change oil liquid flow along loose slot direction, controls the big of damper damping
It is small, so that vehicle driving is attained by optimal damping effect and the good degree of regulation of the simple adjustable effect of structure on different sections of highway
Greatly, processing cost is low.
In the above-mentioned adjustable shock absorber piston of damping, the cross section of the loose slot and extensible member is rectangle,
The width of the extensible member is less than the two sides of the width of loose slot and the two sides of extensible member width direction and activity slot width direction
Gap is all had between wall.
Loose slot and extensible member section are designed as rectangle, guarantee that extensible member is matched with loose slot, and rectangular
Extensible member can control the flow of oil liquid in telescopic process by controlling flexible length, and the width of extensible member is less than activity
The width of slot and between extensible member two sides and loose slot two sidewalls have gap, it is ensured that extensible member have enough spaces stretch
Contracting is attained by vehicle driving on different sections of highway most preferably so that the flow for controlling oil liquid changes the size of damper damping
Damping effect, the simple processing cost of structure is low.
In the above-mentioned adjustable shock absorber piston of damping, the liquid pass hole is rectangle and length direction and loose slot
Length direction is consistent, and the width of the liquid pass hole is less than the width of extensible member, and the extensible member is located at one end of loose slot, crosses liquid
Hole is close to the other end in loose slot.
Liquid pass hole is designed into rectangularity and length direction is consistent with loose slot length direction that extensible member can be made along movable
Gear control liquid pass hole openings of sizes when slot length direction is flexible, to change the use size of liquid pass hole, the width of liquid pass hole is small
In the width of extensible member, it is ensured that the oil liquid flow of liquid pass hole subtracts after extensible member can hinder the circulation of oil liquid to guarantee extensible member elongation
It is small, to change the damping of damper in simple structure, vehicle driving is made to be attained by optimal damping on different sections of highway
Liquid pass hole is arranged in loose slot one end effect, and extensible member, which is located at the loose slot other end, can ensure that telescopic chute can be to greatest extent
Change liquid pass hole use length, thus the accurately damping of adjusting damper, the simple processing cost of structure is low.
In the above-mentioned adjustable shock absorber piston of damping, the extensible member is using electroluminescent made of electrostriction material
Telescopic block, the control piece are electrode, and the electrode is 2 and is separately positioned on the inner wall at loose slot both ends, described electroluminescent
Telescopic block mutually reclines between two electrodes and with one of electrode.
Extensible member is that telescopic block can be made to be stretched under electrode effect using electrostriction block made of electrostriction material
Contracting, control piece are electrode, and electrode is positive and negative 2 and is separately positioned on the inner wall at loose slot both ends that electrode variation passes through control
Circuit control, control circuit can be embedded among piston rod and piston, the accurate control by control circuit to voltage, to produce
Raw different size of electric field can adjust the collapsing length of telescopic block according to different sections of highway, so that the damping of damper is adjusted, it is this
Regulative mode is more accurate, more stable using circuit control adjusting damping, adjusts the more rapid and simple processing cost of structure
It is low.
In the above-mentioned adjustable shock absorber piston of damping, what the telescopic variation amount and electrode of the electrostriction block generated
Relationship between electric field strength is:L=α E, wherein L is the telescopic variation amount of electrostriction block, and α is electrostriction coefficient, and E is
Electric field strength.
There are linear relationships between the electric field strength that the telescopic variation amount and electrode of electrostriction block generate, and can pass through change
The telescopic variation amount of the regular control electrostriction block of electric field strength, to be accurately controlled the size of liquid pass hole, adjusting subtracts
Shake the damping of device piston.Its electrostriction coefficient of same class electrostriction material α is a fixed value.
In the above-mentioned adjustable shock absorber piston of damping, the extensible member is using mangneto made of magnetostriction materials
Telescopic block, the control piece are magnetic pole, and the magnetic pole is 2 and is separately positioned on the inner wall at loose slot both ends, the mangneto
Telescopic block mutually reclines between two magnetic poles and with one of magnetic pole.
Extensible member is that telescopic block can be made to be stretched under electrode effect using magnetostriction block made of magnetostriction materials
Contracting, control piece are magnetic pole, and magnetic pole is 2 and is separately positioned on the inner wall at loose slot both ends that magnetic pole is connected with coil, and magnetic pole
Between can generate magnetic field, by change coil current amount can be changed magnetic pole generate magnetic field density, magnetic density change after mangneto
Telescopic material size changes, to can control the collapsing length of extensible member by controlling magnetic pole, to control liquid pass hole
Using openings of sizes, this design structure is simply controlled accurately, and the damping and reaction that damper can be adjusted according to different sections of highway are more
Fastly, adjusting is more rapid and the simple processing cost of structure is low.
In the above-mentioned adjustable shock absorber piston of damping, what the telescopic variation amount and magnetic pole of the magnetostriction block generated
Relationship between magnetic field strength is：L=γ H, wherein L is the telescopic variation amount of magnetostriction block, and γ is magnetostriction coefficient, H
For magnetic field strength.
There are linear relationships between the electric field strength that the telescopic variation amount and magnetic pole of magnetostriction block generate, and can pass through change
The telescopic variation amount of the regular control magnetostriction block of magnetic field strength, to be accurately controlled the size of liquid pass hole, adjusting subtracts
Shake the damping of device piston.Magnetostriction coefficient γ, which is calculated by the following formula, to be obtained：Wherein LHTo make in magnetic field
Maximum elongation length under, LOFor magnetostriction block the original length.
In the above-mentioned adjustable shock absorber piston of damping, the liquid pass hole is several and circumferentially uniformly divides around piston rod
For cloth on piston only, the activity slot number on the same end face of piston only is consistent with liquid pass hole and a pair of with liquid pass hole one
It should be arranged.
Liquid pass hole is several and is circumferentially uniformly distributed around piston rod, it is ensured that in piston motion, liquid is flowed uniformly through
Liquid pass hole guarantees to adjust available stable damping when liquid pass hole, guarantees regulating effect.
In the above-mentioned adjustable shock absorber piston of damping, several lightening holes are also provided on the piston only.It rises
To the effect for mitigating damper weight.
Compared with prior art, the adjustable shock absorber piston of this damping has the following advantages that：1, it was adjusted by extensible member
The openings of sizes of fluid apertures adjusts the damping of damper, and this design regulating effect is more excellent, adjust more accurate.2, pass through control
The size Control of circuit control extensible member is more accurate, and regulates and controls to stablize reaction faster, adjusts rapider.3, liquid pass hole is axial
It is uniformly distributed the stability of flow for making oil liquid circulate, it is ensured that the stabilization of damping value, it is ensured that regulating effect.4, the function of damping will be adjusted
It can realize that the simple processing cost of structure is low by the structure on piston.
Detailed description of the invention
Fig. 1 is the perspective view of this shock absorber piston.
Fig. 2 is the main view of this shock absorber piston.
Fig. 3 is the cross-sectional view in Fig. 2 on the direction A-A.
Fig. 4 is the partial enlarged view in Fig. 2 at B.
In figure, 1, ontology；1a, liquid pass hole；1b, loose slot；2, piston rod；3, extensible member；4, control piece；5, cover board；5a,
Through-hole.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment one
As shown in Figure 1, daming piston includes piston only 1 and the piston rod 2 that is threaded through on piston only 1, piston only
The liquid pass hole 1a through 1 both ends of the surface of piston only is offered on 1.Oil liquid passes through liquid pass hole 1a, this daming piston when pistons work
Openings of sizes by changing liquid pass hole 1a changes the friction of liquid and inner wall, thus the size for adjusting damping reach damping can
The effect of tune.
As shown in figures 2 and 3, a side end face of piston only 1 offers loose slot 1b, and liquid pass hole 1a is located at loose slot 1b
Bottom is connected to loose slot 1b, and extensible member 3 is equipped in loose slot 1b, and extensible member 3 is embedded in loose slot 1b, and loose slot 1b also has
Have and can control the flexible control piece 4 of extensible member 3, since liquid pass hole 1a is located at the bottom loose slot 1b, when extensible member 3 stretches
The openings of sizes of adjustable liquid pass hole 1a when variation changes the friction of liquid and inner wall and the interior friction of fluid molecule, stretches
The fixed other end in 3 one end of part is flexible to change oil liquid flow along the direction loose slot 1b, and the size of control damper damping makes vehicle
It is big and process that traveling is attained by optimal damping effect and the good degree of regulation of the simple adjustable effect of structure on different sections of highway
It is at low cost.
Loose slot 1b and 3 section of extensible member are rectangle, and this design guarantees that extensible member 3 is matched with loose slot 1b, and
Rectangular extensible member 3 can control the flow of oil liquid, the width of extensible member 3 by controlling flexible length in telescopic process
Degree is less than the width of loose slot 1b and has gap between 3 two sides of extensible member and the two sidewalls loose slot 1b, it is ensured that extensible member
3 have enough space telescopics, so that the flow for controlling oil liquid changes the size of damper damping, vehicle driving are made not go the same way
Optimal damping effect is attained by section.Since liquid pass hole 1a is located at the bottom loose slot 1b, when extensible member 3 carries out telescopic variation
When adjustable liquid pass hole 1a size.Liquid pass hole 1a is also rectangle and length direction is consistent with loose slot 1b length direction,
Gear control liquid pass hole 1a openings of sizes when this design can make extensible member 3 flexible along loose slot 1b length direction, to change
The openings of sizes of liquid pass hole 1a.
Liquid pass hole 1a is several and is circumferentially uniformly distributed around piston rod 2 that this design can guarantee in piston motion
Liquid flows uniformly through liquid pass hole 1a, adjusts available stable damping when liquid pass hole 1a, guarantees regulating effect.Liquid pass hole
The width of 1a is less than the width of extensible member 3, it is ensured that extensible member 3 can hinder the circulation of oil liquid to guarantee liquid pass hole after the elongation of extensible member 3
The oil liquid flow of 1a reduces, to change the damping of damper in simple structure, makes vehicle driving can on different sections of highway
Reach optimal damping effect, liquid pass hole 1a setting is located at the loose slot 1b other end in the one end loose slot 1b extensible member 3 can be true
The use length of liquid pass hole 1a can be changed to greatest extent by protecting telescopic chute, to accurately adjust the damping of damper.
1 both ends of the surface of piston only are equipped with cover board 5, and cover board 5 has through-hole 5a corresponding with liquid pass hole 1a, this design
It can guarantee that oil liquid is flowed through from the through-hole 5a of cover board 5, loose slot 1b is designed as strip, and the extension in long strip of extensible member 3
Rectangular consistent with loose slot 1b, this design can guarantee the length for changing loose slot 1b in 3 elongation process of extensible member, thus
Change the bottom loose slot 1b liquid pass hole 1a openings of sizes, changes flow when oil liquid flows through loose slot 1b, the clamping of 3 one end of extensible member
Tight fit is formed between cover board 5 and the bottom wall of loose slot 1b, the one end that can fix extensible member 3 extends it to the other end,
To more preferably control the elongation of extensible member 3, and cover board 5 and loose slot 1b bottom wall fix extensible member 3 jointly, make at extensible member 3
In being not easy to be detached from from loose slot 1b in loose slot 1b, it is ensured that 3 normal operation of extensible member.
Extensible member 3 is that telescopic block can be made to carry out under electrode effect using electrostriction block made of electrostriction material
Flexible, control piece 4 is electrode, and electrode is 2 and is separately positioned on the inner wall at the both ends loose slot 1b, be can control by electrode
The collapsing length of extensible member 3, to control liquid pass hole 1a openings of sizes, this design structure is simply controlled accurately, can be according to not
The damping of damper is adjusted with section.Exist between the electric field strength that the telescopic variation amount and electrode of electrostriction block generate linear
Relationship L=α E, wherein L is the telescopic variation amount of electrostriction block, and α is electrostriction coefficient, and E is electric field strength, can be by changing
The telescopic variation amount of changed electric field strength control electrostriction block, to be accurately controlled the openings of sizes of liquid pass hole 1a, adjusting subtracts
The damping of device piston is shaken, this simple processing cost of design structure is low.
Embodiment two
The present embodiment it is essentially identical with the adjustable shock absorber piston of one of embodiment one damping, difference exists
In：The extensible member 4 is that telescopic block can be made to be stretched under electrode effect using magnetostriction block made of magnetostriction materials
Contracting, control piece 4 are magnetic pole, and magnetic pole is 2 and is separately positioned on the inner wall at loose slot both ends that magnetic pole is connected with coil, and magnetic
Magnetic field can be generated between pole, and the density that magnetic pole generates magnetic field, magnetic after magnetic density changes can be changed by changing coil current amount
It causes telescopic material size to change, exists between the electric field strength that the telescopic variation amount and magnetic pole of magnetostriction block generate linear
Relationship is：L=γ H, wherein L is the telescopic variation amount of magnetostriction block, and γ is magnetostriction coefficient, and H is magnetic field strength, from
And can control the collapsing length of extensible member 4 by controlling magnetic pole, so that liquid pass hole 1a openings of sizes is controlled, this design structure
Simple control is accurate, and the damping of damper can be adjusted according to different sections of highway and processing cost is low.Magnetostriction coefficient γ by with
Lower formula is calculated：Wherein LHFor the maximum elongation length under magnetic fields, LOIt is former for magnetostriction block
The length come.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (14)
1. a kind of adjustable shock absorber piston of damping, including piston only (1) and the piston rod being threaded through on piston only (1)
(2), it is offered liquid pass hole (1a) on the piston only (1), offers activity on an at least end face for the piston only (1)
Slot (1b), the liquid pass hole (1a) are located at the bottom of loose slot (1b) and are connected to loose slot (1b), in the loose slot (1b)
Equipped with extensible member (3), the extensible member (3) is embedded in the loose slot (1b), and being additionally provided in the loose slot (1b) can
Above-mentioned extensible member (3) is controlled to stretch to adjust the control piece (4) of liquid pass hole (1a) openings of sizes；It is characterized in that, described flexible
Two sides and loose slot (1b) width direction of width of the width of part (3) less than loose slot (1b) and extensible member (3) width direction
Two sidewalls between all have gap, the width of the liquid pass hole (1a) is less than the width of extensible member (3), the extensible member (3)
For using electrostriction block made of electrostriction material, the control piece (4) is electrode, the electrode is 2 and sets respectively
It sets on the inner wall at the both ends loose slot (1b), the electrostriction block is affixed between two electrodes and with one of electrode
It leans on, the electrostriction block generates telescopic deformation under the action of electric field and can be covered on liquid pass hole.
2. a kind of adjustable shock absorber piston of damping according to claim 1, which is characterized in that the piston only (1)
An at least end face on be additionally provided with cover board (5), offer the through-hole being connected with the liquid pass hole (1a) on the cover board (5)
(5a), the loose slot (1b) is in long strip, the extensible member (3) is in long strip and length direction and loose slot (1b) unanimously,
Described extensible member (3) one end be connected between cover board (5) and the bottom wall of loose slot (1b) and with cover board (5) and loose slot (1b)
Bottom wall is fitted close.
3. a kind of adjustable shock absorber piston of damping according to claim 1 or 2, which is characterized in that the loose slot
The cross section of (1b) and extensible member (3) is rectangle.
4. a kind of adjustable shock absorber piston of damping according to claim 3, which is characterized in that the liquid pass hole (1a) is in
Rectangle and length direction is consistent with the length direction of loose slot (1b), the extensible member (3) is located at one end of loose slot (1b),
The other end of the liquid pass hole (1a) close to loose slot (1b).
5. a kind of adjustable shock absorber piston of damping according to claim 1 or 2, which is characterized in that the electrostriction
The relationship between electric field strength that the telescopic variation amount and electrode of block generate is：L=α E, wherein L is the flexible of electrostriction block
Variable quantity, α are electrostriction coefficient, and E is electric field strength.
6. a kind of adjustable shock absorber piston of damping according to claim 1 or 2, which is characterized in that the liquid pass hole
(1a) is several and is circumferentially evenly distributed on piston only (1) around piston rod (2), the same end face of the piston only (1)
On loose slot (1b) quantity and liquid pass hole (1a) it is consistent and be arranged in a one-to-one correspondence with liquid pass hole (1a).
7. a kind of adjustable shock absorber piston of damping according to claim 1 or 2, which is characterized in that the piston only
On be also provided with several lightening holes.
8. a kind of adjustable shock absorber piston of damping, including piston only (1) and the piston rod being threaded through on piston only (1)
(2), it is offered liquid pass hole (1a) on the piston only (1), offers activity on an at least end face for the piston only (1)
Slot (1b), the liquid pass hole (1a) are located at the bottom of loose slot (1b) and are connected to loose slot (1b), in the loose slot (1b)
Equipped with extensible member (3), the extensible member (3) is embedded in the loose slot (1b), and being additionally provided in the loose slot (1b) can
Above-mentioned extensible member (3) is controlled to stretch to adjust the control piece (4) of liquid pass hole (1a) openings of sizes；The control piece (4) is magnetic pole,
It is characterized in that, the width of the extensible member (3) less than loose slot (1b) width and the two sides of extensible member (3) width direction with
Gap is all had between the two sidewalls of loose slot (1b) width direction, the width of the liquid pass hole (1a) is less than extensible member (3)
Width, the extensible member (3) are using magnetostriction block made of magnetostriction materials, and the magnetic pole is 2 and is respectively set
On the inner wall at the both ends loose slot (1b), the magnetostriction block mutually reclines between two magnetic poles and with one of magnetic pole,
The magnetostriction block generates telescopic deformation under the variation of magnetic density and can be covered on liquid pass hole.
9. a kind of adjustable shock absorber piston of damping according to claim 8, which is characterized in that the piston only (1)
An at least end face on be additionally provided with cover board (5), offer the through-hole being connected with the liquid pass hole (1a) on the cover board (5)
(5a), the loose slot (1b) is in long strip, the extensible member (3) is in long strip and length direction and loose slot (1b) unanimously,
Described extensible member (3) one end be connected between cover board (5) and the bottom wall of loose slot (1b) and with cover board (5) and loose slot (1b)
Bottom wall is fitted close.
10. the adjustable shock absorber piston of a kind of damping according to claim 8 or claim 9, which is characterized in that the loose slot
The cross section of (1b) and extensible member (3) is rectangle.
11. a kind of adjustable shock absorber piston of damping according to claim 10, which is characterized in that the liquid pass hole (1a)
It is rectangle and length direction is consistent with the length direction of loose slot (1b), the extensible member (3) is located at the one of loose slot (1b)
End, the other end of the liquid pass hole (1a) close to loose slot (1b).
12. the adjustable shock absorber piston of a kind of damping according to claim 8 or claim 9, which is characterized in that the magnetostriction
The relationship between magnetic field strength that the telescopic variation amount and magnetic pole of block generate is：L=γ H, wherein L is stretching for magnetostriction block
Contracting variable quantity, γ are magnetostriction coefficient, and H is magnetic field strength.
13. the adjustable shock absorber piston of a kind of damping according to claim 8 or claim 9, which is characterized in that the liquid pass hole
(1a) is several and is circumferentially evenly distributed on piston only (1) around piston rod (2), the same end face of the piston only (1)
On loose slot (1b) quantity and liquid pass hole (1a) it is consistent and be arranged in a one-to-one correspondence with liquid pass hole (1a).
14. the adjustable shock absorber piston of a kind of damping according to claim 8 or claim 9, which is characterized in that the piston only
On be also provided with several lightening holes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830312.XA CN105387118B (en) | 2015-11-25 | 2015-11-25 | A kind of adjustable shock absorber piston of damping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830312.XA CN105387118B (en) | 2015-11-25 | 2015-11-25 | A kind of adjustable shock absorber piston of damping |
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| CN105387118A CN105387118A (en) | 2016-03-09 |
| CN105387118B true CN105387118B (en) | 2018-11-27 |
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| CN201510830312.XA Active CN105387118B (en) | 2015-11-25 | 2015-11-25 | A kind of adjustable shock absorber piston of damping |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6558582B2 (en) * | 2016-08-10 | 2019-08-14 | Smc株式会社 | Fluid pressure device |
| JP6673549B2 (en) | 2016-08-10 | 2020-03-25 | Smc株式会社 | Fluid pressure device and method of manufacturing piston assembly |
| JP6558583B2 (en) | 2016-08-10 | 2019-08-14 | Smc株式会社 | Fluid pressure device and method of manufacturing piston assembly |
| CN109372141B (en) * | 2018-11-22 | 2020-12-25 | 东南大学 | Variable damping viscoelastic plate type damper |
| CN109602503B (en) * | 2019-01-29 | 2020-04-07 | 青岛市市立医院 | Monitoring device for field nursing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102644690A (en) * | 2011-02-17 | 2012-08-22 | 通用汽车环球科技运作有限责任公司 | Real-time variable damping module using magnetic shape memory material |
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| CN85101594B (en) * | 1985-04-01 | 1987-10-07 | 中山大学 | No-lead electrostrictive material |
| RU2253576C2 (en) * | 2002-07-02 | 2005-06-10 | Закрытое акционерное общество "Плаза" ( ЗАО "Плаза") | Adjustable shock absorber |
| KR20060100837A (en) * | 2005-03-18 | 2006-09-21 | 현대자동차주식회사 | Damping force adjusting device |
| JP2014009807A (en) * | 2012-07-03 | 2014-01-20 | Fuji Heavy Ind Ltd | Rotary damper |
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| CN102644690A (en) * | 2011-02-17 | 2012-08-22 | 通用汽车环球科技运作有限责任公司 | Real-time variable damping module using magnetic shape memory material |
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