CN102352904B - Shock absorber with suspension magnets and automatic damping regulation function - Google Patents
Shock absorber with suspension magnets and automatic damping regulation function Download PDFInfo
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- CN102352904B CN102352904B CN201110307216.9A CN201110307216A CN102352904B CN 102352904 B CN102352904 B CN 102352904B CN 201110307216 A CN201110307216 A CN 201110307216A CN 102352904 B CN102352904 B CN 102352904B
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- 238000013016 damping Methods 0.000 title claims abstract description 41
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- 239000000126 substance Substances 0.000 claims description 49
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- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a shock absorber with suspension magnets and an automatic damping regulation function, which belongs to a shock absorber which can be compressed and can rebound to reset and particularly relates a shock absorber generating elasticity by using the magnetic force of the magnets. At least one suspension permanent magnet is arranged in the tube body of the shock absorber; the magnetic poles of the suspension permanent magnets are opposite to the magnetic poles of a positioning permanent magnet and a piston permanent magnet; the magnetic poles of the suspension permanent magnets are opposite; the magnetic pole face of each suspension permanent magnet is provided with a closed loop coil for generating a damping action; and the annular face of each turn of coil of the closed loop coil is vertical to the centre line of the tube body. The shock absorber with the suspension magnets and the automatic damping regulation function has the advantages of simple structure, small cross section, light weight and good damping property.
Description
Technical field
The invention belongs to the vibration damper can be compressed again can resilience resetting, particularly produce flexible vibration damper with the magnetic force of magnet.
Background technique
The elastic force as vibration damper with magnet magnetic force now, to fix a motionless magnet in vibration damper bottom, on piston, fix one with the moving magnet of piston synchronous motion, the magnetic pole of these two strong magnets is that same pole is relative, the elastic force with the relative repulsive force of same pole as vibration damper.Because the magnetic force of permanent magnet is generally less, just, with the volume that increases motionless magnet and moving magnet, the area that increases the opposing side of these two magnets meets the elastic force of vibration damper needs.Its shortcoming is to make the weight of vibration damper too large, and the cross section of vibration damper is large too, and consumption material is many, cost is high and shortage practicability.As with one group of diameter be the neodymium iron boron magnetic body of 3.0 centimetres as the elastic member of the vibration damper of electric bicycle, the stroke of vibration damper also only has 2.0-3.0 centimetre; As with one group of diameter be the ferrimagnet of 10.0 centimetres as the elastic member of the vibration damper of electric bicycle, the stroke of vibration damper also only has 2.0-4.0 centimetre, not only volume is large, weight is large, cost is high, stroke is also too short, there is no the flexibility of damping.
For overcoming the magnetic force deficiency of permanent magnet, someone with electromagnet as the elastic member of vibration damper to increase magnetic force, but its shortcoming is: the electric energy of the battery carrying on vehicle is to change, the magnetic force of electromagnet changes, the damping effect that causes vibration damper is the power change with battery, and the damping effect of vibration damper is unstable.For preventing that battery from can not power, also need additional springs as spare unit, this shock absorber structure complexity, poor stability.
Summary of the invention
The object of this invention is to provide a kind of function with automatic damping adjusting, simple in structure, cross section is little, lightweight, with two permanent magnets with the repulsive force between magnetic pole the vibration damper as elastic force.
Structure of the present invention is:
There is the vibration damper of levitated magnet automatic damping adjusting, comprise body 1, in body 1 one end, be fixed with location permanent magnet 2, in body 1 the other end, be provided with movably piston 3, the side that piston 3 is adjacent with location permanent magnet 2 is fixed with piston permanent magnet 4, it is characterized in that: body 1 is divided into inside and outside two-layer, and internal layer is nonmagnetic substance inner tube 5, and skin is rigidity bearing tube 6; In nonmagnetic substance inner tube 5 between location permanent magnet 2 and piston permanent magnet 4, at least be provided with one and location permanent magnet 2 and all discontiguous suspension permanent magnet bodies 8 of piston permanent magnet 4, suspension permanent magnet body 8 is that same magnetic pole is relative with the adjacent surface of location permanent magnet 2, suspension permanent magnet body 8 is that same magnetic pole is relative with the adjacent surface of piston permanent magnet 4, and the adjacent surface between adjacent different suspension permanent magnet bodies 8 is that same magnetic pole is relative; Suspension permanent magnet body 8 at least reaches suspension permanent magnet body 8 at the nonmagnetic substance inner tube 5 needed thickness that can not overturn along the longitudinal thickness of body 1;
Suspension permanent magnet body 8 one or two magnetic pole strengths are provided with and close and circuit coil 9, on 8 one magnetic pole strengths of suspension permanent magnet body close with 9 of circuit coils be one around to, be only clockwise direction around or be only counterclockwise direction around; Close vertical with body 1 center line with the ring surface of the every circle coil of circuit coil 9.
If location permanent magnet 2, piston permanent magnet 4 are that quality is the same and big or small identical with suspension permanent magnet body 8, as having a suspension permanent magnet body 8 between location permanent magnet 2 and piston permanent magnet 4, have two magnet clearance spaces, this has the vibration damper of suspension permanent magnet body to be just equivalent to two supporting power without suspension permanent magnet shock-absorber and running lengths of only having location permanent magnet 2 and piston permanent magnet 4.As constant in supporting power, there is each magnet cross sectional area of the vibration damper of suspension permanent magnet body almost to need only the half without the each magnet cross section of suspension permanent magnet shock-absorber.So bear under weight condition, there is the vibration damper of levitated magnet can greatly reduce the cross section of permanent magnet, increase stroke, also make vibration damper do very littlely.
For location permanent magnet 2, piston permanent magnet 4 and suspension permanent magnet body 8, the pole polarity of the adjacent surface of any adjacent magnets or title opposing side is identical, and the South Pole is to the South Pole, and the arctic is to the arctic.The repulsive force of the identical generation of pole polarity of this opposing side, just as the elastic force of vibration damper, is also the power that suspension permanent magnet body 8 can be suspended.
The vibration damper inner tube application nonmagnetic substance directly contacting with magnet, make piston permanent magnet 4 and suspension permanent magnet body 8 when to-and-fro motion and between inner tube, there is no magnetic attraction in nonmagnetic substance inner tube 5, do not affect reciprocating sensitivity, particularly the friction between magnet and inner tube can be very little, and increased the serviceability of vibration damper.
No matter suspension permanent magnet body 8 is any shape, in nonmagnetic substance inner tube 5, can not overturn, and be same pole otherwise suspension permanent magnet body 8 just can not keep with the adjacent surface of adjacent magnets.For preventing that suspension permanent magnet body 8 from overturning in nonmagnetic substance inner tube 5, suspension permanent magnet body 8 can not be thin slice, and should have certain thickness, will reach along the thickness of nonmagnetic substance inner tube 5 central shafts the degree that suspension permanent magnet body 8 can not be overturn.It is maximum wide by 1/6 that the thickness of general suspension permanent magnet body 8 should be greater than nonmagnetic substance inner tube 5.
The function of automatic damping adjusting is achieved in that owing to closing ring surface with the every circle coil of circuit coil 9 vertical with body 1 center line, samely closes that to close with the every circle of circuit coil 9 magnetic line of force that obtains induced current with circuit coil 9 be all same direction.When shock absorber piston 3 is pressed towards the bottom direction of vibration damper, suspension permanent magnet body 8 is also pressed towards bottom direction motion, being fixed on closing with the magnetic flux of circuit coil 9 of piston permanent magnet 4 and suspension permanent magnet body 8 a certain magnetic poles changes, make to close and the interior generation induced current of circuit coil 9, the magnetic field magnetic force that this induced current produces always hinders the motion of piston permanent magnet 4 and suspension permanent magnet body 8, produces damping function.That is to say, when shock absorber piston 3 is pressed towards bottom direction, close with circuit coil 9 and just automatically produce the damping magnetic force that stops piston 3 to be pressed towards bottom direction, it is faster that piston 3 is pressed towards the movement velocity of bottom direction, close the induced current producing with circuit coil 9 also larger, the damping magnetic force automatically producing is larger.When shock absorber piston 3 resiliences are away from bottom direction, close with circuit coil 9 and produce again a back current, the magnetic force that back current produces hinders again shock absorber piston 3 resiliences, and piston 3 return speed are slowed down, and closes the magnetic force producing with circuit coil 9 and have again the effect of damping piston 3 returning quicklies.So close and always produce the magnetic force contrary with piston 3 moving direction with circuit coil 9 and stop piston 3 to move, and piston 3 moves faster, this damping magnetic force is stronger, this just can make piston 3 to-and-fro motion all more flexible and steady, reduce vibrations, this vibration damper makes the people who takes more comfortable for vehicle damping.
Close with physics explanation the reason that with circuit coil 9, reciprocating piston 3 is all produced damping function below: Faraday's law----electromagnetic induction produces the size of induction electromotive force, is directly proportional to the flux change rate of interlinkage.Be E=-n ΔΦ/Δ t.In formula, n is number of inductive coil turns, within the Δ t time when magnetic flux change Δ ф, the electromotive force producing is e, in formula, the meaning of negative sign "-" is, mutually when the magnetic flux change of interlinkage, coil produces the direction of electromotive force always towards the direction that hinders flux change.And in the time that the magnetic flux of mutual interlinkage increases or reduces, the electromotive force opposite direction producing.So the electromotive force that closing in the present invention produces with circuit coil 9 always hinders piston 3 and moves, and produces damping function.
Piston permanent magnet 4 is provided with and closes and circuit coil 9 with the adjacent pole face of suspension permanent magnet body 8, or location permanent magnet 2 is provided with and closes and circuit coil 9 with the adjacent pole face of suspension permanent magnet body 8; One close with 9 of circuit coils be one around to, be only clockwise direction around or be only counterclockwise direction around; Close vertical with body 1 center line with the ring surface of the every circle coil of circuit coil 9.Can establish and close and circuit coil 9 to suspension permanent magnet body 8 magnetic pole strengths at piston permanent magnet 4 or location permanent magnet 2, owing to closing, ring surface with the every circle coil of circuit coil 9 is vertical with body 1 center line, and making every circle close the magnetic line of force that obtains induced current with circuit coil 9 is all same direction.This closes with circuit coil 9 and produces the principle of piston 3 damping functions is same as to the principle that produces damping function with circuit coil 9 of closing on above-mentioned suspension permanent magnet body 8.
Be provided with that to close with suspension permanent magnet body 8 magnetic pole strengths of circuit coil 9 be to cave inward that to close with piston permanent magnet 4 magnetic pole strengths of circuit coil 9 be the structure or to be provided with location permanent magnet 2 magnetic pole strengths that close with circuit coil 9 be the structure that caves inward of caving inward for structure or be provided with; Close with circuit coil 9 and be embedded in depression.
Preferably being provided with the each permanent magnet magnetic pole-face closing with circuit coil 9 is sunk structure, closes with circuit coil 9 and is all located in sunk structure.In sunk structure, establish to close can avoid closing with circuit coil 9 with circuit coil 9 and contact with nonmagnetic substance inner tube 5, protection is closed and circuit coil 9, and contacts with nonmagnetic substance inner tube 5 with piston permanent magnet 4 with the suspension permanent magnet body 8 of wear-resisting wiping.Can avoid like this closing with circuit coil 9 and contact with nonmagnetic substance inner tube 5, protection is closed and circuit coil 9, and contacts the mechanical property of raising vibration damper, enhancing serviceability with the suspension permanent magnet body 8 of wear-resisting wiping with nonmagnetic substance inner tube 5 with piston permanent magnet 4.
Body 1 that one end of putting into piston 3 is fixed with ring type permanent magnet 7, and ring type permanent magnet 7 is that same magnetic pole is relative with piston permanent magnet 4; Piston 3 is through the hole in ring type permanent magnet 7, piston 3 nonmagnetic substance inner tube 5 in the hole of ring type permanent magnet 7 in slidably.
Ring type permanent magnet 7 is that same magnetic pole is relative with piston permanent magnet 4, while like this can piston 3 resiliences resetting to rearmost position, stops piston 3 to eject nonmagnetic substance inner tube 5 with magnetic-force flexible.Make in the process of piston 3 resiliences resets, people feels to have more travelling comfort.
Nonmagnetic substance inner tube 5 is a certain of copper material pipe or aluminum material pipe or non-magnetic stainless steel or engineering plastics material pipe.Non-magnetic stainless steel is most preferred material.
Location permanent magnet 2, piston permanent magnet 4 and ring type permanent magnet 7 are neodymium iron boron NdFeB magnets, are that magnetic energy product is at least 318BHmax/KJm
-3permanent magnet.This be a kind of be technical feasibility economical and practical magnet material again for vibration damper.
In nonmagnetic substance inner tube 5 between location permanent magnet 2 and piston permanent magnet 4, be provided with 2-3 or 4-6 or 6-8 and location permanent magnet 2 and all discontiguous suspension permanent magnet bodies 8 of piston permanent magnet 4; Same magnetic pole between different suspension permanent magnet bodies 8 is relative.
If use magnetic energy product to be at least 318BHmax/KJm
-3permanent magnet, make load-carrying 1-2 people's non-locomotive as the vibration damper of storage battery car, motorcycle etc., in the nonmagnetic substance inner tube 5 of vibration damper, being provided with 2-3 suspension permanent magnet body 8, just to make vibration damper boundary dimension may diminish to both artistic and practical, lower-cost requirement again.Make the vibration damper of load-carrying 4-6 people car, in the nonmagnetic substance inner tube 5 of vibration damper, be provided with 4-6 suspension permanent magnet body 8 and just can make vibration damper boundary dimension may diminish to be convenient to installation, can meet mechanical strength etc., the requirement of the lower practicality of cost again.Make the vibration damper of general shipping lorry, in the nonmagnetic substance inner tube 5 of vibration damper, be provided with 6-8 suspension permanent magnet body 8 and just can make vibration damper boundary dimension may diminish to be convenient to install, can meet mechanical strength etc., the requirement of the lower practicality of cost again.
Upper or the upper/lower positions of permanent magnet of the present invention is: be above shock absorber piston permanent magnet 4 is placed on, location permanent magnet 2 is placed on this general vehicle below and uses the state of vibration damper to be defined as the upper of permanent magnet of the present invention or upper/lower positions relation.
Advantage of the present invention: shock absorber structure of the present invention is simple, slider piston permanent magnet and suspension permanent magnet body respectively with the slip surface structure of nonmagnetic substance inner tube to manufacturing process require low, processing cost is low, and the resistance to usability of slip surface is significantly higher than hydraulic damper.Damping spring is stable, and damping curve is stable, except pressure, does not have other factors to affect elastic force and the shake curve of vibration damper, and working state is not affected by the extraneous factors such as electricity.Under condition for identical heavy burden, cross section is less than the vibration damper with electromagnet, is also less than spring damper; As vibration damper circular permanent magnet diameter of the present invention is only 0.8 centimetre, body outer diameter is only 1.5 centimetres of vibration dampers that just can be used as two people's motorcycles, and at least 3.0 centimetres of two present people's motorcycle hydraulic vibration damper body outer diameters are many to the consumption of steel.Owing to there is no accurate structure and simple in structure, not fragile and durable, it is also extremely convenient to keep in repair; But hydraulic damper complex structure, has the difficult maintenance problem of easy oil leakage; Spring damper is complex structure also, bad maintenance.A vibration damper weight of the present invention for two people's motorcycles is only 0.2 kilogram, and is 1.5 kilograms for a hydraulic damper weight of two people's motorcycles, and spring damper weight is 1.5 kilograms, and visible vibration damper of the present invention divides aobvious lighter.
Producing closing of damping function is to make full use of vibration damper existing structure with circuit coil, makes that vibration damper reduces vibrations, working curve is more steady, makes the people who takes more comfortable for vehicle damping.And the effect of damping function can be closed with the number of circuit coil institute pitch of the laps quantity and realize with adjusting, reach and make people's the most comfortable of taking.
Brief description of the drawings
Fig. 1 is agent structure schematic diagram of the present invention;
In figure, 1 is body, the 2nd, location permanent magnet, the 3rd, and piston, piston permanent magnet, the 5th, nonmagnetic substance inner tube, the 6th, rigidity bearing tube, the 7th, ring type permanent magnet, the 8th, suspension permanent magnet body, the 9th, closes and circuit coil.
Embodiment
Embodiment 1, piston permanent magnet are south face to location permanent magnet, and suspension permanent magnet body only has one side to have the vibration damper that has levitated magnet automatic damping adjusting closing with circuit coil
First be prepared with the vibration damper of levitated magnet, as Fig. 1, internal layer with inner diameter be the non-magnetic stainless steel pipe of 1.0 centimetres as nonmagnetic substance inner tube 5, the steel pipe that one of outer surface cover is mainly used in bearing weight is as rigidity bearing tube 6, inside and outside two pipes being nested as the body 1 of vibration damper.The location permanent magnet 2 of body 1 one end dress can not move with rigidity bearing tube 6 is fixing, and the South Pole of location permanent magnet 2 magnetic poles is in body 1; One end of piston rod is fixed with piston permanent magnet 4, piston rod and piston permanent magnet 4 form piston 3, piston permanent magnet 4 one end that have of piston 3 are placed in the nonmagnetic substance inner tube 5 of body 1, the arctic and the piston rod of piston permanent magnet 4 magnetic poles are fixed, the South Pole is relative with location permanent magnet 2, and a part for piston rod is positioned at nonmagnetic substance inner tube 5 outsides.
From nonmagnetic substance inner tube 5, take out piston 3, it is 0.9 centimetre two outer diameters, thickness is that the cylindrical suspension permanent magnet body 8 of 1.0 centimetres is placed in nonmagnetic substance inner tube 5, the method of putting is: first put into first suspension permanent magnet body 8 to nonmagnetic substance inner tube 5, the magnet South Pole of first suspension permanent magnet body 8 is put into the form of location permanent magnet 2 south pole orientation; Again nonmagnetic substance inner tube 5 is put into to the form of first suspension permanent magnet body 8 direction to the north pole in the magnet arctic of second suspension permanent magnet body 8, make the magnet south face of second suspension permanent magnet body 8 to piston permanent magnet 4 south face; Finally piston 3 is put into nonmagnetic substance inner tube 5, the South Pole of piston permanent magnet 4 magnetic poles is relative with the magnet South Pole of second suspension permanent magnet body 8.The adjacent permanent magnet that makes four permanent magnets in body 1 is all that identical magnet polarity is relative, be between adjacent permanent magnet to become with the state that repels each other and can not fit, make it in the interior space of pipe that first suspension permanent magnet body 8 and second suspension permanent magnet body 8 be suspended in the nonmagnetic substance inner tube 5 between location permanent magnet 2 and piston permanent magnet 4.
Location permanent magnet 2, piston permanent magnet 4 and ring type permanent magnet 7 are neodymium iron boron NdFeB magnets, are that magnetic energy product is at least 318BHmax/KJm
-3permanent magnet.
The vibration damper size of the present embodiment and the number of suspension permanent magnet body 8 are suitable as the vibration damper that motorcycle is used.
By the above-mentioned vibration damper pressure testing power making, after the attached requirement of elementary sum, increase to close with circuit coil 9 and prepare the vibration damper with automatic damping adjusting, making step is as follows:
Being coiled into largest outer diameter with the insulated paint copper conductor that diameter is 0.1 centimetre is 0.7 centimetre, thickness is the closing and circuit coil more than 9 of annular ring type of 0.3 centimetre, close vertically with body 1 center line with the ring surface of the every circle coil of circuit coil 9, making every circle close the magnetic line of force that obtains induced current with circuit coil 9 is all same direction.Take out piston 3 and first suspension permanent magnet body 8, second 8 three parts of suspension permanent magnet body in vibration damper one end, all one is closed with circuit coil 9 respectively with polymeric adhesive on the South Pole surface of piston permanent magnet 4 and the surface, the South Pole of first suspension permanent magnet body 8 bonding steady, from these two close with the side of circuit coil 9 observe close with circuit coil 9 around to being counterclockwise direction winding.One is closed with circuit coil 9 with polymeric adhesive on the surface, the arctic of second suspension permanent magnet body 8 bonding steady, from this close with the side of circuit coil 9 observe close with circuit coil 9 around to being clockwise direction winding.?
Piston is the South Pole, coil below, piston permanent magnet 4 and first suspension permanent magnet body 8 south face close with circuit coil 9 counterclockwise direction around;
Piston is the South Pole, coil below, second suspension permanent magnet body 8 north pole face close with circuit coil 9 clockwise directions around;
On a magnetic pole strength close with 9 of circuit coils be one around to, be only clockwise direction around or be only counterclockwise direction around; Close vertical with body 1 center line with the ring surface of the every circle coil of circuit coil 9.
Then, there is the side of closing with circuit coil 9 to pack in nonmagnetic substance inner tube 5 to location permanent magnet 2 first suspension permanent magnet body 8, there is the side of closing with circuit coil 9 to pack in nonmagnetic substance inner tube 5 to the north pole face of first suspension permanent magnet body 8 second suspension permanent magnet body 8 again, finally have the piston permanent magnet 4 closing with circuit coil 9 to pack in nonmagnetic substance inner tube 5 south face.Make the vibration damper of levitated magnet automatic damping adjusting.
Embodiment 2, piston permanent magnet are south face to location permanent magnet, and there is the vibration damper that has levitated magnet automatic damping adjusting closing with circuit coil on suspension permanent magnet body two sides
On embodiment 1 basis, from the interior taking-up piston 3 of nonmagnetic substance inner tube 5, first suspension permanent magnet body 8 and second suspension permanent magnet body 8.All be stained with respectively and close and circuit coil 9 at two magnetic pole strengths of two suspension permanent magnet bodies 8.
Bonding one of the magnet north pole face of first suspension permanent magnet body 8 closes and circuit coil 9, from this close with the side of circuit coil 9 observe close with circuit coil 9 around to being clockwise direction winding.Bonding one of the magnet south face of second suspension permanent magnet body 8 is closed and circuit coil 9, from this close with the side of circuit coil 9 observe close with circuit coil 9 around to being counterclockwise direction winding.Two magnet face of first suspension permanent magnet body 8 and second suspension permanent magnet body 8 are had respectively and can produce closing and circuit coil 9 of damping function.
Piston is the South Pole, coil in the above, first suspension permanent magnet body 8 north pole faces close with circuit coil 9 counterclockwise direction around;
Piston is the South Pole, coil in the above, second suspension permanent magnet body 8 south face close with circuit coil 9 clockwise directions around;
Close vertically with body 1 center line with the ring surface of the every circle coil of circuit coil 9, making every circle close the magnetic line of force that obtains induced current with circuit coil 9 is all same direction.
Then, there is the side of closing with circuit coil 9 to pack in nonmagnetic substance inner tube 5 to location permanent magnet 2 in first suspension permanent magnet body 8 South Pole, there is the side of closing with circuit coil 9 arctic to pack in nonmagnetic substance inner tube 5 to the north pole face of first suspension permanent magnet body 8 second suspension permanent magnet body 8 again, again, south face is had to close with the piston permanent magnet 4 of circuit coil 9 to pack in nonmagnetic substance inner tube 5, finally with ring type permanent magnet 7 wear away piston rod intrinsic ring type permanent magnet 7 on body 1.Make the vibration damper that has levitated magnet automatic damping adjusting that damping and amortization is stronger
Embodiment 3, close with circuit coil not can with the vibration damper that has levitated magnet automatic damping adjusting of pipe friction in nonmagnetic substance
On embodiment 1 basis, the north pole face of the south face of piston permanent magnet 4 magnetic poles, the south face of first suspension permanent magnet body 8 magnetic poles and the magnetic pole of second suspension permanent magnet body 8 is made to the structure of 0.4 centimetre of caving inward.
Close and that coil of circuit coil 9 without embodiment 1, but use the doubling plate that has copper film layer on insulated substrate instead, copper film layer is corroded into and in same plane, has the closed-loop path of multiple concentric rings coil Single-layer Windings.In 0.4 centimetre of sunk structure of each permanent magnet, with the stacked laminating of multiple closed-loop path coil Single-layer Windings, be fixed in sunk structure, in sunk structure, multiple Single-layer Windings are stacked fits into one and closes and circuit coil 9.These three are closed with circuit coil 9 and embodiment 1 three and close with circuit coil 9 around to identical.Can avoid like this closing with circuit coil 9 and contact with nonmagnetic substance inner tube 5, protection is closed and circuit coil 9, and contacts with nonmagnetic substance inner tube 5 with piston permanent magnet 4 with the suspension permanent magnet body 8 of wear-resisting wiping.
What embodiment 4, anti-piston were deviate from close with circuit coil not can with the vibration damper that has levitated magnet automatic damping adjusting of pipe friction in nonmagnetic substance
As embodiment 3, and be fixed with middle porose ring type permanent magnet 7 in body 1 that one end of putting into piston 3, ring type permanent magnet 7 is that same magnetic pole is relative with piston permanent magnet 4, in the present embodiment, ring type permanent magnet 7 is that the arctic is relative with the magnetic pole of 4 two of piston permanent magnets, can prevent that piston permanent magnet 4 one end that have of piston 3 from deviating from from the hole of ring type permanent magnet 7; The piston rod of piston 3 is through the hole in ring type permanent magnet 7, piston 3 nonmagnetic substance inner tube 5 in the hole of ring type permanent magnet 7 in slidably.
Claims (5)
1. there is the vibration damper of levitated magnet automatic damping adjusting, comprise body (1), in body (1) one end, be fixed with location permanent magnet (2), in body (1) the other end, be provided with movably piston (3), the side that piston (3) is adjacent with location permanent magnet (2) is fixed with piston permanent magnet (4), it is characterized in that: body (1) is divided into inside and outside two-layer, and internal layer is nonmagnetic substance inner tube (5), and skin is rigidity bearing tube (6); In nonmagnetic substance inner tube (5) between location permanent magnet (2) and piston permanent magnet (4), at least be provided with one and location permanent magnet (2) and all discontiguous suspension permanent magnet bodies (8) of piston permanent magnet (4), suspension permanent magnet body (8) is that same magnetic pole is relative with the adjacent surface of location permanent magnet (2), suspension permanent magnet body (8) is that same magnetic pole is relative with the adjacent surface of piston permanent magnet (4), and the adjacent surface between adjacent different suspension permanent magnet bodies (8) is that same magnetic pole is relative; Suspension permanent magnet body (8) at least reaches suspension permanent magnet body (8) at nonmagnetic substance inner tube (5) the needed thickness that can not overturn along the longitudinal thickness of body (1);
One or two magnetic pole strength of suspension permanent magnet body (8) is provided with and closes and circuit coil (9), on (8) magnetic pole strengths of suspension permanent magnet body close and circuit coil (9) be only one around to, be only clockwise direction around or be only counterclockwise direction around; Close vertical with body (1) center line with the ring surface of the every circle coil of circuit coil (9);
Piston permanent magnet (4) is provided with and closes and circuit coil (9) with the adjacent pole face of suspension permanent magnet body (8), or location permanent magnet (2) is provided with and closes and circuit coil (9) with the adjacent pole face of suspension permanent magnet body (8); One close and circuit coil (9) be only one around to, be only clockwise direction around or be only counterclockwise direction around; Close vertical with body (1) center line with the ring surface of the every circle coil of circuit coil (9);
Be provided with close and suspension permanent magnet body (8) magnetic pole strength of circuit coil (9) for the structure or be provided with of caving inward close and piston permanent magnet (4) magnetic pole strength of circuit coil (9) for the structure or be provided with of caving inward close and location permanent magnet (2) magnetic pole strength of circuit coil (9) for caving inward structure; Close and circuit coil (9) is embedded in depression.
2. the vibration damper that has levitated magnet automatic damping adjusting according to claim 1, it is characterized in that: that one end of body (1) of putting into piston (3) is fixed with ring type permanent magnet (7), and ring type permanent magnet (7) is that same magnetic pole is relative with piston permanent magnet (4); Piston (3) is through the hole in ring type permanent magnet (7), piston (3) nonmagnetic substance inner tube (5) in the hole of ring type permanent magnet (7) in slidably.
3. the vibration damper that has levitated magnet automatic damping adjusting according to claim 2, is characterized in that: nonmagnetic substance inner tube (5) is a certain of copper material pipe or aluminum material pipe or non-magnetic stainless steel.
4. the vibration damper that has levitated magnet automatic damping adjusting according to claim 3, is characterized in that: location permanent magnet (2), piston permanent magnet (4) and ring type permanent magnet (7) are neodymium iron boron magnetic bodies, are that maximum magnetic energy product is at least 318KJm
-3permanent magnet.
5. the vibration damper that has levitated magnet automatic damping adjusting according to claim 4, it is characterized in that: in the nonmagnetic substance inner tube (5) between location permanent magnet (2) and piston permanent magnet (4), be provided with 2-3 or 4-6 or 6-8 and location permanent magnet (2) and all discontiguous suspension permanent magnet bodies (8) of piston permanent magnet (4); Same magnetic pole between different suspension permanent magnet bodies (8) is relative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110307216.9A CN102352904B (en) | 2011-10-12 | 2011-10-12 | Shock absorber with suspension magnets and automatic damping regulation function |
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| CN102352904B true CN102352904B (en) | 2014-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB201222977D0 (en) * | 2012-12-19 | 2013-01-30 | Warwick Music Ltd | Fluid flow control valves |
| CN105221642B (en) * | 2015-10-16 | 2018-06-19 | 吴炳臣 | A kind of shock-dampening method, damping device and its application |
| CN107419946B (en) * | 2017-06-23 | 2024-01-19 | 河北建筑工程学院 | Building shock insulation device |
| CN109114147B (en) * | 2018-09-29 | 2023-11-24 | 西南交通大学 | Vibration damping device and traveling equipment |
| CN114645585B (en) * | 2022-04-16 | 2023-07-18 | 北京工业大学 | Self-resetting damping device based on permanent magnet repulsive force and eddy current effect |
| CN114658127A (en) * | 2022-04-16 | 2022-06-24 | 北京工业大学 | Self-resetting damper based on permanent magnet repulsion force and U-shaped metal plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965029Y (en) * | 2006-11-14 | 2007-10-24 | 闫铁 | Permanent-magnet shock damper |
| CN202326865U (en) * | 2011-10-12 | 2012-07-11 | 黄强 | Damper with suspended magnet and automatic damping adjusting function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09242801A (en) * | 1996-03-11 | 1997-09-16 | Yoshihiro Okuda | Magnet spring |
| DE10306500A1 (en) * | 2003-02-17 | 2004-08-26 | Bayerische Motoren Werke Ag | Wheel suspension especially active wheel suspension of vehicle uses electric linear motor that works as permanent excited synchronous motor and whose rotor is built by electrical coils |
| GB0617290D0 (en) * | 2006-09-01 | 2006-10-11 | Univ Reading | Suspension unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965029Y (en) * | 2006-11-14 | 2007-10-24 | 闫铁 | Permanent-magnet shock damper |
| CN202326865U (en) * | 2011-10-12 | 2012-07-11 | 黄强 | Damper with suspended magnet and automatic damping adjusting function |
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| Title |
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| JP特开平9-242801A 1997.09.16 |
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