WO2005088160A1 - 能動型液封入式防振装置 - Google Patents
能動型液封入式防振装置 Download PDFInfo
- Publication number
- WO2005088160A1 WO2005088160A1 PCT/JP2004/003419 JP2004003419W WO2005088160A1 WO 2005088160 A1 WO2005088160 A1 WO 2005088160A1 JP 2004003419 W JP2004003419 W JP 2004003419W WO 2005088160 A1 WO2005088160 A1 WO 2005088160A1
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- WIPO (PCT)
- Prior art keywords
- cylindrical
- liquid
- liquid chamber
- metal fitting
- fitting
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
- F16F13/264—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for acting dynamically on the walls bounding a working chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
Definitions
- the present invention relates to an active-type liquid-filled type vibration damping device that enhances the vibration damping effect by controlling the pressure of the internal liquid chamber.
- the active type liquid filled type vibration damping device is generally mounted on a first mounting member, a cylindrical second mounting member, a vibration-isolating base made of a rubber-like elastic material connecting these, and a second mounting member.
- a first diaphragm that forms a liquid enclosing chamber between the vibration isolating substrate and the first diaphragm, and a partition body that partitions the liquid enclosing chamber into a first liquid chamber on the vibration isolating substrate side and a second liquid chamber on the first diaphragm side;
- the mount is assembled as an engine mount in a car, and by controlling the pressure in the first liquid chamber through the actuator, the mount has a low dynamic spring and achieves an excellent vibration suppression effect. .
- the above-mentioned active type liquid filled type vibration damping device is disclosed in Japanese Patent Application Laid-Open No. 2000-31043 / 29 and Japanese Patent Application Laid-Open No. 2000-1955342.
- an orifice is formed between the outer peripheral portion of the partition member and the inner peripheral surface of the second mounting member, and a concave portion formed in the center of the partition member serves as a movable element of an actuator that serves as a vibration means.
- the rubber wall is vulcanized and formed over the inner peripheral portion of the concave portion and the distal end portion of the shaft member, and the inner peripheral portion of the second fixture and a part of the shaft member are inserted.
- the diaphragm is vulcanized and formed, and the rubber wall is provided so as to be able to vibrate through a shaft member of the actuator.
- the shaft member of the actuator is inserted into the recess formed in the center of the partition body, and the rubber wall is vulcanized over the inner peripheral portion of the recess and the tip of the shaft member. Molding and vulcanizing the diaphragm over the inner peripheral part of the second fixture and part of the shaft member, so the number of parts around the rubber wall and the shaft member increases, complicating the structure Had been transformed.
- a shaft member in which two coils are arranged coaxially at an interval above and below and a magnet is mounted on an air core portion thereof.
- the so-called moving magnet type in which a shaft member with a magnet is reciprocated in the axial direction by electromagnetic force generated between the coil and the magnet by energizing the coil, a large force is applied.
- the outer diameter becomes large, and it is not suitable for miniaturization and weight reduction. Also, if the magnet becomes large, it will not be cheap and will be weak against impact.
- a yoke member and a coil are arranged in a part of an inner part, and an outer part surrounding the yoke member is a vibrating member that reciprocates in an axial direction.
- a part of the outer part is formed on the rubber wall.
- An object of the present invention is to provide an active liquid filled type vibration damping device that can simplify the structure, reduce the number of parts, simplify the assembly work, increase the output, and contribute to miniaturization.
- the first mounting member and the cylindrical second mounting member are connected via a vibration-proof base made of a rubber-like elastic material, and a rubber wall is provided so as to face the vibration-proof base.
- a first liquid chamber is defined between the first liquid chamber and the rubber wall. The first liquid chamber communicates with a second liquid chamber provided separately from the second liquid chamber through an orifice, and forms a part of the chamber wall of the first liquid chamber.
- An active-type liquid-filled type vibration damping device in which the rubber wall is vibrated by vibrating means connected to the rubber wall to control the pressure of the first liquid chamber
- the second mounting member includes: A lower cylindrical metal fitting for holding the vibrating means, and an upper cylindrical metal fitting press-fitted and fixed to the inner periphery of an upper end side cylindrical portion, wherein the lower cylindrical metal fitting is provided at a lower end of the vibration-proof base inside the upper cylindrical metal fitting.
- the upper part of the cylindrical fitting that constitutes the outer peripheral wall of the first liquid chamber is vulcanized and adhered, and a cylindrical diaphragm surrounding the outside of the cylindrical fitting.
- the upper end of the cylindrical fitting is fixed liquid-tight to the upper end of the upper tubular fitting together with the upper end of the diaphragm, and an annular orifice forming fitting is added to the outer peripheral part of the rubber wall.
- the orifice forming fitting is liquid-tightly fitted and fixed to the lower inner periphery of the upper tubular fitting together with the lower end of the diaphragm, and the lower end of the tubular fitting contacts the upper surface of the orifice forming fitting.
- the second liquid chamber is formed between the cylindrical metal fitting and the diaphragm, and the air chamber is formed between the diaphragm and the upper cylindrical metal fitting.
- the orifice forming metal fitting is formed between the first liquid chamber and the first liquid chamber.
- An orifice for communicating the two liquid chambers is formed, and as the vibrating means, a shaft member connected to the rubber wall is at least one of a mover that can reciprocate in an axial direction with respect to a stator disposed outside the shaft member.
- a movable core-type actuator configured as a part, and by exciting a coil provided in the stator, the shaft member is driven in both directions of a forward movement stroke and a backward movement stroke to drive the rubber wall. Is excited.
- the actuator is configured as a solenoid
- the shaft member connected to the rubber wall is electrically driven in the forward stroke
- the return stroke is mechanically performed by the elastic force of the coil spring.
- the force F [N ] rises t 1 [s (seconds)]
- the value of this delay t 1 tends to vary for each forward stroke.
- the force F drops sharply, and the F-t curve (curve representing the relationship between F and time t) is not smooth, and there is a problem that vibration cannot be absorbed accurately.
- a filter member that forms a third liquid chamber between the first liquid chamber and the rubber wall is provided in the first liquid chamber, and a means for correcting the Ft curve into a sine wave curve is adopted.
- the coil provided with the shaft member of the actuator connected to the rubber wall, as at least a part of the movable element, on the stator disposed outside the movable element.
- the motor By exciting the coil by passing a current through the coil, the motor is electrically driven in both forward and backward strokes. Therefore, as shown in FIG. Can be eliminated.
- the Ft curve can be made a sine wave curve corresponding to the sine wave curve representing the relationship between the sine wave alternating current and the current. Therefore, it is not necessary to provide the third liquid chamber as a correction means for converting the Ft curve into a sine wave curve, and the filter member is not required, thereby suppressing an increase in the number of parts.
- a diaphragm is disposed radially outward of a cylindrical metal fitting that forms an outer peripheral wall of the first liquid chamber and is vulcanized and bonded to the vibration-proof base, and an annular second liquid chamber is formed between the cylindrical metal fitting and the diaphragm.
- the orifice for vulcanizing and bonding to the outer peripheral portion of the rubber wall forms an orifice for communicating the first liquid chamber and the second liquid chamber, so that the diaphragm is exposed to the outside.
- the second liquid chamber can be compactly and simply configured without using the same, and the orifice structure for communicating the first liquid chamber with the second liquid chamber can be simplified, and the number of parts can be reduced. For example, it is only necessary to connect a rubber wall to the shaft member of the vibration means, and the configuration of the rubber wall itself and the number of parts around the shaft member can be reduced.
- the diaphragm made of a relatively thin rubber film can be protected by the upper tubular fitting, and the presence of an air chamber between the diaphragm and the upper tubular fitting causes a change in the hydraulic pressure of the diaphragm. Movement is also acceptable.
- the upper end of the tubular fitting and the orifice forming fitting are fitted and fixed to the inner periphery of the upper tubular fitting of the second fitting together with the upper and lower ends of the diaphragm.
- the apparatus body including the liquid chamber, the second liquid chamber, and the orifice can be easily assembled and configured. Therefore, for example, these apparatus main bodies are assembled and configured separately from the vibrating means, and then, the lower cylindrical metal fitting and the upper cylindrical metal fitting of the second fitting for holding the vibrating means are press-fitted and fixed. Then, the entire device can be assembled and manufactured.
- an orifice forming member vulcanized and bonded to the outer periphery of the rubber wall forms a circumferential concave groove opening outward, and is vulcanized and bonded to a lower end portion of the diaphragm on the outer periphery of the orifice forming member.
- a sealing rubber layer is vulcanized and bonded to the inner peripheral surface of the upper cylindrical metal member, and a cylindrical reinforcing metal member which is vulcanized and bonded to an upper end portion of the diaphragm and a cylindrical member which is vulcanized and bonded to a lower end portion thereof.
- a reinforcing metal fitting is hermetically fitted to the inner periphery of the upper cylindrical metal fitting through the rubber layer for sealing, whereby the diaphragm constituting the second liquid chamber can be fixed reliably and with good sealing properties. At the same time, the sealing performance of the air chamber existing outside the diaphragm can be maintained well.
- the iron core movable type actuator has a magnetic pole portion in which the stator disposed outside of the mover including the shaft member projects radially inward, and the magnetic pole portion includes: At least one pair of permanent magnets adjacent to each other in the axial direction and having different polarities are arranged, and a coil is wound around the magnetic pole portion, and the magnetomotive force generated by exciting the coil and each of the permanent magnets The shaft member is reciprocated by a combination of the respective magnetomotive forces.
- a stator attached to the second fixture and a magnetic material portion provided on the outer periphery of the shaft member, and can reciprocate in the axial direction with respect to the stator.
- a movable member supported in an inner space of the stator, wherein the stator is adjacent to a magnetic pole portion facing a magnetic material portion of the movable member in a reciprocating direction of the movable member.
- a pair of permanent magnets facing the magnetic material portion are disposed with the arrangement of magnetic poles in a direction orthogonal to the reciprocating direction reversed so as to form mutually different poles.
- a coil capable of generating a magnetic flux passing therethrough is wound around a magnetic pole portion of the stator.
- the shaft member can be reciprocated in the axial direction by alternately changing the direction of the coil current in the forward and reverse directions, that is, by the change in the positive and negative currents.
- the moving magnet is a type of movable core that utilizes a change in the magnetic circuit caused by a combination of the magnetomotive force generated by the coil excitation and the permanent magnets forming the different poles and the respective magnetomotive forces. Higher output is obtained than in the case of the mold.
- the pair of permanent magnets adjacent to each other in the reciprocating direction and having opposite polarities face each other with the magnetic material portion interposed therebetween in a direction orthogonal to the reciprocating direction, and the opposing magnetic poles have opposite polarities. If the arrangement of the magnetic poles is reversed and the magnetic poles are arranged on the respective magnetic pole portions of the stator facing each other with the mover interposed therebetween, a stronger magnetomotive force can be generated. As a result, a greater force can be obtained than in the case of the moving magnet type, and miniaturization can be easily achieved.
- the plate surface faces the axial direction of the shaft member, and the shaft member is fixed to the stator via a pair of plate springs located at intervals in the axial direction. If it is supported by the mover, Applying frictional resistance to the shaft member can be avoided, so that the reciprocating movement of the shaft member becomes smooth.
- FIG. 1 is a longitudinal sectional view of the active liquid filled type vibration damping device of the present invention.
- FIG. 2 is a schematic explanatory view showing the operation of the actuille.
- FIG. 3 is a schematic explanatory view showing the action of the actuary when a current flows in the coil in the positive direction.
- FIG. 4 is a schematic explanatory view showing the operation of the actuille.
- FIG. 5 is a schematic explanatory view showing the action of the actuary when a current flows through the coil in the reverse direction.
- FIG. 6 is a diagram showing the relationship between the force F acting upon the actuation of the active liquid filled type vibration damping device and the time t.
- FIG. 7 is a diagram showing the relationship between the force F applied by the drive of the actuator and the time t of the conventional active liquid filled vibration isolator.
- Fig. 1 shows an active-type liquid-filled type vibration damping device (hereinafter referred to as “liquid-filled type vibration damping device”) that is mounted on an automobile as an engine mount.
- a first mounting member 1 mounted on an engine and a cylindrical second mounting member 2 mounted on a frame on a vehicle body side are interposed via a vibration insulating base 3 made of a rubber-like elastic material.
- a disk-shaped rubber wall 5 is provided in the second fixture 2 so as to face the vibration-proof base 3, and a first liquid chamber 4 is formed between the vibration-proof base 3 and the rubber wall 5. are doing.
- the first liquid chamber 4 is provided separately from a second liquid chamber 6 and an orifice 8 in which a diaphragm 7 described later forms a part of the chamber wall. The connection is established.
- the rubber wall 5, which forms a part of the chamber wall of the first liquid chamber 4, has an electromagnetic linear actuator 9 (hereinafter, referred to as "actuator 9") having a movable iron core as a vibration means. ) Is connected from the side opposite to the first liquid chamber 4, and is provided so as to control the pressure of the first liquid chamber 4 by vibrating and displacing the rubber wall 5.
- the actuator 9 is provided fixed to the second fixture 2 as described later.
- the first attachment 1 has a flange 1 a extending outward at a substantially central portion in the vertical direction, and a rubber layer 3 a integral with the vibration-proof base 3 is vulcanized up to the upper surface of the flange 1 a. It is provided by bonding means.
- the first attachment 1 has a screw hole 1b which opens upward in the axial center thereof, and is connected to the engine by screwing a connection bolt (not shown) into the screw hole lb. And so on.
- a stopper fitting may be mounted on the flange 1a of the first fitting 1.
- the second fitting 2 is composed of a lower tubular fitting 21 and an upper tubular fitting 22.
- the lower cylindrical member 21 is provided with a large-diameter upper cylindrical portion 21c via an inclined portion 21b on a lower side portion 21a holding the actuator 9 as the vibrating means. Are formed continuously, and the lower part of the upper cylindrical fitting 22 is press-fitted and fixed to the upper cylindrical part 21c. Further, the first liquid chamber 4, the second liquid chamber 6, the orifice 8, and the like are built in the inside of the upper cylindrical fitting 22 as described later.
- the anti-vibration base 3 has a bottom side (lower side) formed in a hollow truncated cone shape, and the upper end thereof is vulcanized and bonded to the first attachment 1 in a state where the lower side is embedded. .
- the tapered upper portion 10a which is next expanded is vulcanized and adhered, and the cylindrical lower portion 10b extends to the lower rubber wall 5 to form the outer peripheral wall of the first liquid chamber 4.
- 10a1 indicates the upper end of the upper portion 10a.
- a rubber layer 3 b continuous from the vibration-isolating base 3 is provided on the inner periphery of the lower portion 10 b of the cylindrical fitting 10.
- a constricted shape made of a relatively thin rubber film surrounding the cylindrical fitting 10 and having a central portion in the axial direction (vertical direction) bulging inward is formed.
- An eggplant diaphragm 7 is provided.
- Cylindrical reinforcing members 71 and 72 are respectively vulcanized and bonded to the upper end and the lower end of the diaphragm 7.
- a thin rubber layer 7 1 a, 7 2 a integral with the diaphragm 7 is vulcanized on the outer peripheral surface of the reinforcing bracket 71 at the upper end and the inner peripheral surface of the reinforcing bracket 72 at the lower end, respectively. Adhered and installed.
- the reinforcing metal member 71 of the upper end portion is fitted and fixed to the outer periphery of the upper end portion 10a1 of the cylindrical metal member 10 by press-fitting means, and the upper end portion 10a1 of the cylindrical metal member 10. However, together with the reinforcing metal member 71, it is liquid-tightly fitted to the upper end of the upper cylindrical metal member 22 of the second mounting member 2 and caulked.
- annular orifice forming metal member 11 having a shape of a concave groove in the circumferential direction opened radially outward is vulcanized and bonded to the outer peripheral portion of the rubber wall 5.
- thin rubber layers 5a and 5b integral with the rubber wall 5 are provided on the upper and lower surfaces of the orifice forming bracket 11, thin rubber layers 5a and 5b integral with the rubber wall 5 are provided.
- the orifice forming metal fitting 11 is provided with a reinforcing metal fitting 72 at the lower end of the diaphragm 7 on the outer periphery thereof in a liquid-tight manner via the rubber layer 72a, and the upper cylindrical member together with the reinforcing metal fitting 72.
- the lower end of the cylindrical metal fitting 10 is attached to the upper surface of the orifice forming metal fitting 11 by being liquid-tightly fitted and fixed to the inner periphery of the lower part of the metal fitting 22. It is held in contact so as to maintain the sealed state.
- a sealing rubber layer 2 2 a On the inner peripheral surface of the upper cylindrical fitting 22, a sealing rubber layer 2 2 a The reinforcing members 71 and 72 at the upper and lower ends of the diaphragm 7 are hermetically fitted via the rubber layer 22a for sealing.
- a cover plate 15 that covers a lower portion of the rubber wall 5 is fixed by caulking together with the orifice forming metal 11 under the orifice forming metal 11. At the center of the cover plate 15 is formed a through hole 16 that allows the shaft member of the actuator 9 described later to move up and down.
- the cover plate 15 also serves as a hold-down for the event.
- the space between the cylindrical fitting 10 and the diaphragm 7 is formed as the second liquid chamber 6, and the space between the diaphragm 7 and the upper cylindrical fitting 22 is an air chamber 13 It is formed as. Further, the recessed groove portion of the orifice forming bracket 11 is formed as an orifice 8 for communicating the first liquid chamber 4 and the second liquid chamber 6 by communicating portions 8a and 8b.
- the lower portion of the upper cylindrical member 22 is press-fitted and fixed to the upper cylindrical portion 21 c of the lower cylindrical member 21 of the second mounting member 2 to be assembled.
- a support bracket 19 is fixed to the outer peripheral portion of the lower side cylindrical portion 21 a of the lower cylindrical bracket 21 by welding means or the like, and a bottom plate 23 is integrally connected to the lower surface of the support bracket 19.
- a plurality of connecting bolts 20 for connecting to a frame on the vehicle body side are fixed.
- the bottom plate 23 is provided so as to be able to receive the above-mentioned act 9 by an inwardly upwardly projecting portion 23a.
- An electromagnet type actuator 9 of a movable iron core which is a vibrating means of the rubber wall 5, vertically extends a shaft member 27 constituting at least a part of a movable element capable of reciprocating in the axial direction with respect to the stator.
- the head 26 of the rubber wall 5 is formed in a projecting manner, and this is embedded and connected to the center of the rubber wall 5 in the vulcanization molding step of the rubber wall 5.
- the actuator 9 includes a stator 28 attached to the second fixture 2, and an inner space (axial portion) of the stator 28 which is capable of reciprocating in the axial direction with respect to the stator 28. And a movable element 30 supported.
- the stator 28 includes a yoke 28 a which is located outside the mover 30 and is formed by stacking a number of annular (mainly rectangular annular) metal plates made of a magnetic metal such as an electromagnetic steel plate.
- the yoke 28a has magnetic pole portions 29, 29 protruding radially inward from both sides so as to face each other across the mover 30 at the central portion in the axial direction.
- the mover 30 is basically a mover iron core formed by laminating a number of metal disks made of the same magnetic metal as described above on the shaft member 27 at the center in the axial direction.
- the magnetic material portion 30a is fixed.
- the magnetic material portion 30a is fixed to a pipe member 37 fitted to the shaft member 27, and the pipe member 37 is fitted to the outer periphery of the shaft member 27.
- a positioning nut 36a of the shaft member 27 is fitted to engage with the upper stepped portion 27a, and a lower portion thereof, together with the pipe member 37, A pair of upper and lower supporting panel panels 35, 35, which will be described later, and a pair of short pipes 38, 38 that sandwich the panel panels 35, 35 between the panel members, are further fitted.
- the nut 36 for tightening is screwed into the screw portion 27 b at the end of 7 and fixed by screwing. 39 prevents the tightening nut 36 from loosening. Locking nut for stopping.
- stator 1 is inserted into the inner space of the stator 28, which is press-fitted into the lower cylindrical portion 21a, and is vertically inserted into the stator 28 through the plate panels 35, 35 (the shaft member 27). (In the direction of the axis of the shaft) and supported in a reciprocating manner.
- the plate panels 35, 35 are formed in a rectangular ring shape with a part inwardly detoured so as to bypass a coil portion described later, and are spaced apart from each other in the up-down direction, and the magnetic material portion 3 It is located with a gap between it and 0a.
- Each leaf spring 35 has its inner peripheral end sandwiched between the pipe member 37 and the short pipes 38, 38 as described above, and its outer peripheral end has the stator 28.
- the upper and lower case members 40 and 41 are fixed together at the outer peripheral portion thereof by a bolt 42 for fixing the upper and lower case members 40 and 41 with the yoke 28a interposed therebetween, and are supported so as to be elastically deformable.
- the mover 30 can move up and down without any problem.
- the movable part 30 has magnetic pole parts 29, 29 of the stator 28 opposed to the magnetic material part 30 a.
- the permanent magnets 31, 32 formed in a pair of upper and lower circular arcs facing the magnetic material portion 30 a are arranged side by side in the reciprocating direction (vertical direction) of the element 30.
- the magnetic poles are arranged in a direction (left-right direction) perpendicular to the reciprocating movement direction so as to form mutually different poles of NS alternately, and are arranged in a state where the arrangement of the magnetic poles (N pole and S pole) is reversed. ing.
- the length from the upper end of the upper permanent magnet 31 to the lower end of the lower permanent magnet 32 is longer than the length of the magnetic material portion 30a in the vertical direction (axial direction).
- a coil 33 is wound around a magnetic pole portion 29 of the stator 28 around an axis in a direction (left-right direction) orthogonal to the reciprocating direction, so that the pair of permanent magnets 31, It is configured to generate a magnetic flux passing through 32.
- the magnet part 34 composed of the pair of permanent magnets 31 and 32 is connected to the two magnetic pole parts 29 and 29 of the stator 28 opposite to each other with the mover 30 therebetween.
- the permanent magnets 31, 32 of the two magnetic pole portions 29, 29, and the magnet portions 34, 34 of the two magnetic pole portions 29, 29, respectively, are provided in the direction perpendicular to the reciprocating direction.
- the magnetic poles are arranged opposite to each other so as to oppose each other with the portion 30a interposed therebetween, and the magnetic poles opposing each other are formed to have different polarities.
- the coil 33 is also wound around the magnetic pole sections 29, 29 in such a manner that it is located on the left and right outer sides of each magnet section 34.
- 43 is a spool member for holding the coil 33.
- the pair of coils 33 and 33 are connected to each other.
- the upper permanent magnet 31 of the pair of upper and lower permanent magnets 3 1 and 3 2 on the right side has the N pole on the surface facing the magnetic material portion 30 a and the S pole on the opposite surface.
- the lower permanent magnet 32 has an S pole on the surface facing the magnetic material portion 30a and an N pole on the opposite surface.
- Left pair of permanent magnets 3 1, 3 2 Of the upper permanent magnet 31, the surface facing the magnetic material portion 30 a has the S pole, and the opposite permanent magnet has the N pole, and the lower permanent magnet 32 faces the magnetic material portion 30 a.
- the opposite side is the N pole and the opposite side is the S pole.
- the white arrows pointing left and right indicate the direction of the magnetomotive force of the permanent magnets 31, 32. The magnetomotive force is directed to the left on the upper side and to the right on the lower side.
- a sinusoidal alternating current is passed through the coil 33, thereby allowing the axis of the mover 30 to move.
- the member 27 can be moved up and down in response to the change in the direction of the alternating current.
- the F—t curve showing the relationship between the force F [N] acting on the liquid-sealed vibration isolator and the time t [s] by driving the actuator 9 is represented by a sine curve.
- a sinusoidal curve corresponding to the sinusoidal curve representing the relationship between the wave AC currents can be obtained.
- a second liquid chamber and a diaphragm 7 are provided radially outside the first liquid chamber 4 inside the upper cylinder 22 of the second mounting tool 2. Since the orifice 8 for communicating the first liquid chamber 4 and the second liquid chamber 6 is incorporated, the second liquid chamber 6 can be made compact and simple without exposing the diaphragm 7 to the outside, and The orifice structure can be simplified and the number of parts can be reduced.
- the present invention is not limited to an engine mount, but can be implemented in various ways.
- the present invention can be applied to a mount provided between a suspension member and a body-side frame.
- the mover 30 may be one in which the magnetic material portion 30a is directly fixed to the shaft member 27 by press-fitting means or the like.
- magnet section 34 may be configured as in [a] below.
- the upper permanent magnet 31 has an S pole on the side facing the magnetic material portion 30 a, an N pole on the opposite side, and a lower side.
- the permanent magnet 32 has an N pole on the side facing the magnetic material portion 30a and an S pole on the opposite side.
- the upper permanent magnet 3 1 of the pair of left permanent magnets 3 1 and 3 2 has an N pole on the side facing the magnetic material portion 30 a and an S pole on the opposite side, and the lower permanent magnet 3 2
- the side facing the magnetic material part 30a is the S pole, and the opposite side is the N pole.
- the present invention is particularly suitable for use in an engine mount as an active type liquid-filled type vibration damping device of the type that enhances the vibration damping effect by controlling the pressure of the internal liquid chamber, and is used for other mounts it can.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/003419 WO2005088160A1 (ja) | 2004-03-15 | 2004-03-15 | 能動型液封入式防振装置 |
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PCT/JP2004/003419 WO2005088160A1 (ja) | 2004-03-15 | 2004-03-15 | 能動型液封入式防振装置 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000170824A (ja) * | 1998-12-07 | 2000-06-23 | Nissan Motor Co Ltd | 防振支持装置 |
JP2000337427A (ja) * | 1999-05-27 | 2000-12-05 | Tokai Rubber Ind Ltd | 能動型防振装置 |
JP2003184943A (ja) * | 2001-12-14 | 2003-07-03 | Tokai Rubber Ind Ltd | 流体封入式防振装置 |
-
2004
- 2004-03-15 WO PCT/JP2004/003419 patent/WO2005088160A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000170824A (ja) * | 1998-12-07 | 2000-06-23 | Nissan Motor Co Ltd | 防振支持装置 |
JP2000337427A (ja) * | 1999-05-27 | 2000-12-05 | Tokai Rubber Ind Ltd | 能動型防振装置 |
JP2003184943A (ja) * | 2001-12-14 | 2003-07-03 | Tokai Rubber Ind Ltd | 流体封入式防振装置 |
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