JP2007015471A - Suspension support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension support reducing noise by vibration transmitted from a tire into a cabin. <P>SOLUTION: The suspension support is provided with: an inner mounting member 12 mounted to an upper end 102a of a rod 102 of a shock absorber 100; an outer mounting member 14 mounted to a vehicle body 104 side; and a vibration-proof base body 16. The inner mounting member 12 is provided with an excitation means 36 comprising a cylindrical mounting part 18 and a flange part 22 and denying vibration in an axial direction L1 of the rod 102 by exciting the flange part 22. The excitation means 36 is provided with: a shaft member 44; a stator 46; a cylinder part 20 having an upper end 20J connected to a lower end 44K of the shaft member 44; and an excitation plate 24. The shaft member 44 is constituted as at least a part of a movable element reciprocable in an axial direction L2 regarding the stator 46. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention
A cylindrical inner mounting member that is attached to the upper end of the shock absorber rod, an outer mounting member that surrounds the inner mounting member and is mounted on the vehicle body side, and is interposed between the inner mounting member and the outer mounting member. The present invention also relates to a suspension support including the outer mounting member and a vibration-proof base made of a rubber-like elastic body that connects the inner mounting member.

  In the strut type and double wishbone type suspensions of vehicles such as automobiles, suspension support with vibration damping function used for the connection part between the shock absorber rod and the vehicle body side is generally at the upper end of the rod in the shock absorber. A cylindrical inner mounting member to be mounted, an outer mounting member to be mounted on the vehicle body side, and a vibration-proof base made of a rubber-like elastic body that connects both members over the entire circumference (see Patent Document 1). The suspension support is interposed in the connecting portion between the rod and the vehicle body side member, absorbs the vibration of the rod caused by the vertical vibration of the tire when the vehicle is running, and absorbs vibration from the rod to the vehicle body side. Block transmission.

  In recent automobiles, the required level of noise reduction is high. For noise reduction caused by vibration from the engine, for example, an actuator is attached to an engine mount that supports the engine with respect to the vehicle body. There has been proposed a technique for reducing the noise in the passenger compartment by generating a control vibration that cancels the noise (see Patent Document 2).

However, in order to further reduce the noise, not only the vibration from the engine but also the road noise, which is the noise caused by the vibration transmitted from the tire to the vehicle interior, is required to be further reduced.
JP 2004-278598 A JP-A-6-16047

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a suspension support capable of reducing noise caused by vibration transmitted from a tire to a vehicle interior.

The feature of the present invention is that
A cylindrical inner mounting member that is attached to the upper end of the shock absorber rod, an outer mounting member that surrounds the inner mounting member and is mounted on the vehicle body side, and is interposed between the inner mounting member and the outer mounting member. A suspension support comprising a vibration-proof base made of a rubber-like elastic body that connects the outer mounting member and the inner mounting member,
The inner mounting member includes a cylindrical mounting portion through which the upper end portion of the rod is inserted, and a flange portion that protrudes radially outward from the mounting portion and is embedded in the vibration isolation base.
An electromagnet type excitation means for exciting the flange portion in the axial direction of the rod and canceling the vibration of the rod in the axial direction;
The vibration means includes a vertical shaft member positioned above the rod, a stator disposed radially outward of the shaft member, and a rod portion protruding upward from an upper end portion of the mounting portion. And a flange-like excitation projecting radially outward from the lower end of the cylinder so as to be positioned above the flange, and a cylinder having an upper end connected to the lower end of the shaft member And the vibration plate is embedded in the vibration isolation base, a vibration isolation base portion is interposed between the lower surface of the vibration plate and the upper surface of the flange portion, and the shaft member is the stator. The shaft member is configured as at least a part of a movable element that can reciprocate in the axial direction of the shaft member, and the shaft member is driven in both the forward and backward strokes by exciting a coil provided in the stator. The vibration plate vibrates the flange part. In that it is configured to.

According to this configuration, the vibration means vibrates the flange portion of the inner mounting member in the axial direction of the rod to cancel the vibration of the rod in the axial direction. That is, the shaft member is driven in both the forward and backward strokes, and the vibration plate vibrates the flange portion to cancel the vibration of the rod. Thereby, the vibration in the axial direction of the rod transmitted from the tire to the rod can be reduced, and the noise in the passenger compartment caused by this vibration can be reduced. For example, in a structure in which the upper end portion of the rod is connected to the lower end portion of the shaft member via a buffer rubber and the upper end portion of the rod is vibrated by the shaft member (hereinafter referred to as “comparative structure”), the rod is removed from the tire. There is a problem that vibration transmitted to the flange portion through the flange portion is likely to be transmitted to the vehicle body side above the vibration isolation base portion above the flange portion. On the other hand, according to the above-described configuration of the present invention, the flange portion is adapted to vibrate in the axial direction of the rod, and as the means, a flange-like vibration plate is located above the flange portion, Since the vibration-proof base portion is interposed between the lower surface of the vibration plate and the upper surface of the flange portion, the vibration transmitted from the tire to the flange portion via the rod, the vibration plate above the flange portion, and The above-mentioned problem can be solved by canceling out the vibration-proof base portion. Further, the vibration means includes the above-described cylindrical portion, and it is not necessary to interpose the buffer rubber between the lower end portion of the shaft member and the upper end portion of the rod, so that the lower end portion of the shaft member is connected to the upper end portion of the rod. And the height of the vibration means can be reduced.
By using the iron core movable actuator having the above-described configuration as the vibration means, it is possible to eliminate the delay in the rise of the force generated by the reciprocating motion of the shaft member of the actuator, and to drive the mover quickly and smoothly. Control becomes possible. Moreover, since the iron core is movable, a large output can be obtained without increasing the outer diameter.

In the present invention,
The vibration means includes the mover formed by attaching a magnetic material portion to the outer periphery of the shaft member, and the annular stator disposed on the radially outer side of the mover,
The mover is supported by the stator so as to be capable of reciprocating in the axial direction of the shaft member in the inner space of the stator,
The stator includes a magnetic pole portion that protrudes radially inward, and at least a pair of permanent magnets that are adjacent to each other in the axial direction of the stator and have different polarities are disposed in the magnetic pole portion. A coil capable of generating a magnetic flux passing through the pair of permanent magnets is wound around the magnetic pole part, and a combination of magnetomotive force generated by excitation of the coils and each magnetomotive force of each permanent magnet, If the mover is configured to reciprocate in the axial direction of the shaft member, it is possible to obtain a small excitation force and a large excitation force, and the suspension support that receives a considerably large load is also increased in size. Can be done without.

In this suspension support,
The vibration means can be driven and controlled to vibrate the flange portion in the axial direction of the rod in response to vibration in the axial direction of the rod transmitted from the wheel side of the automobile to the rod. . The vibration means is connected to vibration detection means for detecting vibration in the axial direction of the rod, and is driven and controlled by receiving a signal based on vibration detected by the vibration detection means, and the rod If it is configured to give the rod a vibration that cancels the vibration, the following action can be achieved. That is, since the vibration sound caused by the tire cavity resonance has a normal frequency around 200 Hz, the excitation means is driven and controlled so as to cancel the vibration in the frequency range of 150 to 250 Hz (vibration caused by the tire cavity resonance). As a result, it is possible to effectively reduce noise in the passenger compartment caused by cavity resonance.

  A second cylindrical portion surrounding the outer peripheral surface of the flange portion of the inner mounting member is connected to the outer peripheral edge portion of the vibration plate, and between the outer peripheral surface of the flange portion and the inner peripheral surface of the second cylindrical portion. The vibration transmitted from the tire to the flange portion via the rod is transmitted to the flange portion when another vibration-proof base portion connected to the vibration-proof base portion between the lower surface of the vibration plate and the upper surface of the flange portion is interposed. In addition to canceling with the vibration plate above the vibration part and the vibration-proof base part, the vibration from the outer peripheral surface of the flange part toward the radially outward side is caused by the second cylinder part and the other vibration part. It is possible to cancel the vibration-proof substrate portion, and it is possible to more easily solve the problem that has occurred in the structure of the comparative example.

  ADVANTAGE OF THE INVENTION According to this invention, the suspension support which can reduce the noise by the vibration transmitted to a vehicle interior from a tire was able to be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the suspension support 10 surrounds the cylindrical inner mounting member 12 attached to the upper end portion 102 a of the rod 102 of the shock absorber 100 and the inner mounting member 12, and is used for a vehicle body panel and a frame. And an anti-vibration device comprising a rubber-like elastic body that is interposed between the outer mounting member 14 and the outer mounting member 14 that is attached to the vehicle body 104, which is a concept including a connecting member for these members. And a base 16.

  The inner mounting member 12 includes a cylindrical mounting portion 18 through which the upper end portion 102a of the rod 102 is inserted, and a circle that extends from the axially intermediate portion of the mounting portion 18 to the radially outward side K1 and is embedded in the vibration isolation base 16. It consists of a plate-like flange portion 22. The mounting portion 18 is clamped and fixed in the axial direction by the first nut 117 screwed into the female thread portion of the rod 102 and the step portion 118 of the rod 102.

  The outer mounting member 14 includes a disk-shaped metal plate member 26 that is mounted so as to close the circular mounting opening 106 provided in the vehicle body 104 from the lower surface side, and an outer periphery of the plate member 26. It consists of a metal cup-shaped member 28 attached to the lower surface side of the part. The plate member 26 includes a through hole 26a through which the attachment portion 18 is inserted at the center portion, and is attached and fixed to the lower peripheral edge portion of the vehicle body opening portion 106 with a bolt and a nut on the outer periphery thereof. The cup-shaped member 28 has a container shape opening upward, and a through hole 28a through which the rod 102 is inserted is provided at the center of the bottom wall. An opening edge of the upper end of the cup-shaped member 28 is formed as a flange-shaped mounting plate 28b projecting outward, and this mounting plate 28b is superposed on the outer peripheral portion of the plate member 26 and fixed with the bolts and nuts. By combining the plate member 26 and the cup-shaped member 28 as described above, a housing space 34 for the vibration-proofing base 16 is formed between the two, and by housing the vibration-proofing base 16 in the housing space 34, the inner mounting is performed. The member 12 and the outer mounting member 14 are elastically connected via a vibration isolating base 16. The anti-vibration base 16 is sandwiched between the plate member 26 and the cup-shaped member 28 in the vertical direction. The plate member 26 and the mounting plate 28b of the cup-shaped member 28 receive the upper end of the coil sbling 112 (see FIG. 3) via a spring seat (not shown).

  The suspension support 10 is provided with a linear actuator 36 (hereinafter referred to as an “actuator”) as an electromagnet-type excitation means driven by an electromagnet. The actuator 36 vibrates the rod 102 in the axial direction L1 by exciting the flange portion 22 of the inner mounting member 12 in the axial direction L1 of the rod 102 from the upper U side. This cancels the vibration of the rod 102 in the axial direction L1. The actuator 36 is electrically controlled based on the vibration in the axial direction L1 transmitted from the tire 116 (wheel 116) to the rod 102, and is configured to apply vibration to the rod 102 in accordance with the axial vibration.

  The actuator 36 is accommodated in a housing member 38 attached to the upper surface side of the vehicle body opening 106. The housing member 38 includes a cylindrical main body portion 40 and a top plate portion 42 fixed with a first bolt 41 so as to close the upper end opening thereof, and a second flange to the outside of the lower end of the main body portion 40. The portion 40a is fixed to the vehicle body 104 with bolts and nuts together with the plate member 26 and the cup-shaped member 28.

  As the above-described vibration means, various linear actuators driven in the axial direction L1 by an electromagnet can be used, but an axis set in a vertical posture concentric with the axis O above the upper end 102a of the rod 102. A movable member 48 having a member 44 and a stator 46 disposed on the radially outer side K1 of the shaft member 44 and capable of reciprocating in the axial direction L2 of the shaft member 44 with respect to the stator 46. An iron core movable actuator 36 configured as at least a part of the above is particularly preferably used. More specifically, the actuator 36 surrounds the rod portion 102 </ b> L protruding upward U from the upper end 18 </ b> J of the mounting portion 18, and the upper end 20 </ b> J is connected to the lower end 44 </ b> K of the shaft member 44. And a flange-like vibration plate 24 projecting from the lower end portion 20K of the cylindrical portion 20 to the radially outer side K1 so as to be positioned above the U, and the vibration plate 24 is embedded in the vibration-isolating base 16. An anti-vibration base portion 16 a is interposed between the lower surface 24 </ b> K of the vibration plate 24 and the upper surface 22 </ b> U of the flange portion 22. Further, the second cylindrical portion 53 surrounding the outer peripheral surface 22G of the flange portion 22 is connected to the outer peripheral edge portion 24E of the vibration plate 24, and the outer peripheral surface 22G of the flange portion 22 and the inner peripheral surface 53N of the second cylindrical portion 53 In between, another anti-vibration base portion 16b connected to the anti-vibration base portion 16a is interposed. The tube portion 20 and the second tube portion 53 are each formed in a cylindrical shape, and the vibration plate 24 is formed in a disk shape.

A cap-like connecting member 51 is fitted and fixed to the upper end portion 20 </ b> J of the cylindrical portion 20, and the lower end portion 44 </ b> K of the shaft member 44 is connected to the radial center of the upper surface of the connecting member 51. That is, the lower end portion 44 </ b> K of the shaft member 44 is connected to the upper end portion 20 </ b> J of the cylindrical portion 20 via the connecting member 51. The connecting member 51 and the shaft member 44 are integrally formed. The cylinder portion 20 also surrounds the upper end portion 18J of the attachment portion 18.

  The actuator 36 is supported by an annular stator 46 fixed to the vehicle body 104 side and an inner space 73 (axial center portion) of the stator 46 so as to be capable of reciprocating in the axial direction with respect to the stator 46. And a child 48.

  As shown in FIG. 4, the stator 46 is located outside the mover 48 and has a yoke 54 formed by laminating a plurality of annular (mainly rectangular annular) metal plates made of a magnetic metal such as an electromagnetic steel plate, Magnetic pole portions 56, 56 projecting from both sides toward the radially inward side K <b> 2 so as to face each other across the movable element 48 at the center of the yoke 54. The stator 46 is fastened and fixed to the lower surface of the top plate portion 42 by a second bolt 58 at the outer periphery thereof.

  The mover 48 has a magnetic material portion 60 as a mover iron core formed by laminating a plurality of metal plates made of the same magnetic metal as described above at an intermediate portion in the axial direction around the shaft member 44. The shaft member 44 is connected to and supported by the stator 46 via a pair of upper and lower leaf springs 62 and 62 so as to be reciprocally movable in the vertical direction (the axial direction of the shaft member 44). In the case of the illustrated example, the magnetic material portion 60 is fixed to the pipe member 64, and the pipe member 64 is fitted and fixed to the outer periphery 44 </ b> P of the shaft member 44. A pair of leaf springs 62, 62 are fixed to the pipe member 64 at intervals above and below the magnetic material portion 60, and the upper end portion of the shaft member 44 is fastened with a second nut 66 to the shaft member 44. On the other hand, it is fixed while being positioned in the axial direction. An opening through which the second nut 66 can pass is provided at the center of the top plate portion 42 of the housing member 38.

  As shown in FIGS. 4 to 6, the reciprocating direction (vertical direction) of the mover 48 is provided at the tip, that is, the inner end of the magnetic pole portions 56 and 56 of the stator 46 facing the magnetic material portion 60 of the mover 48. The permanent magnets 68 and 70 having a pair of upper and lower circular arc plates facing the magnetic material portion 60 side by side are arranged in the reciprocation direction so that their magnetic poles are NS different from each other. The magnetic poles are arranged in an orthogonal direction (left-right direction), and the arrangement of the magnetic poles (N pole and S pole) is reversed. The length from the upper end of the upper permanent magnet 68 to the lower end of the lower permanent magnet 70 is longer than the length of the magnetic material portion 60 in the vertical direction (axial direction).

  A coil 72 is wound around the magnetic pole portion 56 of the stator 46, that is, the coil 72 is wound around an axis center in a direction orthogonal to the reciprocating direction (left-right direction in FIG. 1), The magnetic flux passing through the permanent magnets 68 and 70 can be generated.

  In the case of the figure, a pair of permanent magnets 68 and 70 are provided at the inner ends of the two magnetic pole portions 56 and 56 of the stator 46 facing each other with the mover 48 interposed therebetween, and both the magnetic pole portions 56 and 56 are provided. The permanent magnets 68 and 70 are opposed to each other with the magnetic material portion 60 sandwiched in a direction orthogonal to the reciprocating direction, and the magnetic poles are arranged in opposite directions so that the opposed magnetic poles are different from each other. It is arranged. Correspondingly, the coil 72 is also wound around the magnetic pole portions 56 and 56 in a state where each of the coils 72 is located outward from each permanent magnet.

  As shown in FIG. 4, the pair of coils 72 are connected to each other. As shown in FIGS. 4 and 5, the upper permanent magnet 68 of the pair of upper and lower permanent magnets 68, 70 on the right side has an N pole on the side facing the magnetic material portion 60, and an S pole on the opposite side. The permanent magnet 70 on the side has an S pole on the side facing the magnetic material portion 60 and an N pole on the opposite side. Of the pair of left permanent magnets 68, 70, the upper permanent magnet 68 has an S pole on the surface facing the magnetic material portion 60 and an N pole on the opposite side, and the lower permanent magnet 70 has a magnetic material portion 60. The opposite side is the N pole and the opposite side is the S pole. 4 and 5, the white arrows pointing in the left-right direction indicate the directions of magnetomotive forces of the permanent magnets 68 and 70. The magnetomotive force is directed to the left side at the upper side and to the right side at the lower side.

  With the above configuration, when the coil 72 is not energized, the magnetic flux generated by the permanent magnets 68 and 70 in the left and right magnetic pole portions 56 and 56 is short-circuited through the portion of the magnetic material portion 60 that faces both the magnets. Then, as shown in FIG. 5, when a positive current flows through the coil 72, a magnetomotive force in the direction of the arrow is generated in the coil 72. As a result, the direction of the magnetomotive force of the upper permanent magnet 68 and the coil 72 The direction of the magnetomotive force (arrow in FIG. 5) is the same, the magnetic fluxes of the magnets are combined to increase the magnetomotive force, while the direction of the magnetomotive force of the lower permanent magnet 70 and the magnetomotive force of the coil 72 are The direction is reversed, and the magnetomotive force of both is canceled and weakened. As a result, an upward force (indicated by a white arrow) acts on the magnetic material portion 60 and the shaft member 44 of the mover 48 to raise the shaft member 44.

  As shown in FIG. 6, when a reverse current (negative current) flows through the coil 72, the direction of the magnetomotive force of the upper permanent magnet 70 is opposite to the direction of the magnetomotive force of the coil 72. The magnetic flux is canceled and the magnetomotive force is weakened, and the direction of the magnetomotive force of the lower permanent magnet 70 and the direction of the magnetomotive force of the coil 72 are the same, and the magnetic flux of the magnet is synthesized on this lower side. This increases the magnetomotive force. As a result, a downward force (shown by a self-drawing arrow) acts on the magnetic material portion 60 and the shaft member 44 of the mover 48, and the shaft member 44 is lowered. Then, the direction of the current of the coil 72 is alternately changed in the forward and reverse directions, so that the member 44 reciprocates up and down.

  Therefore, the movable iron core type actuator 36 can move the shaft member 44 up and down by passing a sine wave alternating current through the coil 72, and thereby sine with respect to the flange portion 22 (and the upper end portion 102 a of the rod). The vibration of the wave curve can be given. Further, by controlling the current flowing through the coil 72, the vibration state can be controlled, and thus the vibration applied to the rod upper end 102a can be arbitrarily controlled.

  A configuration of a system for reducing noise in the vehicle interior using the suspension support 10 will be described.

  As shown in FIGS. 3 and 7, this system includes a suspension sensor 10 having an actuator 36 as a vibration means, and a vibration sensor (acceleration as a vibration detection means for detecting vibration in the axial direction L1 of the rod 102. Sensor) 74, a microphone 76 as sound detecting means for detecting the sound in the passenger compartment, and a drive signal generating unit for generating a drive signal for driving and controlling the actuator 36 based on signals from the vibration sensor 74 and the microphone 76. 78.

  As shown in FIGS. 1 and 2, the vibration sensor 74 is attached to the side surface of the rod 102 and vibrates in a predetermined frequency range (specifically, 150 to 250 Hz) in the axial direction L1 of the rod 102. It detects and outputs this as a reference signal. The vibration sensor 74 is connected to a reference signal A / D 80 that is a converter that converts the reference signal from an analog value to a digital value.

  As shown in FIG. 3, the microphone 76 is provided in the vehicle interior, and is configured to detect sound in the vehicle interior, particularly in the vicinity of the front seat head position, and output this as an error signal. The microphone 76 is connected to an error signal A / D 82 which is a converter that converts the error signal from an analog value to a digital value.

  The drive signal generation unit 78 is connected to the reference signal A / D 80 and the error signal A / D 82, and generates a drive signal for driving and controlling the actuator 36 based on digital signals input from them. It is constituted by a known DSP (digital signal processor). In the drive signal generation unit 78, a signal that gives the rod 102 vibration having a waveform (vibration with the opposite phase and the same amplitude) that cancels the axial vibration in the predetermined frequency range of the rod 102 by driving the actuator 36. In order to input, a drive signal is generated based on the reference signal and the error signal. Such a signal can be generated by obtaining a transfer function of the system by inputting a random signal to the actuator 36 and measuring an error signal in advance.

  The drive signal output from the drive signal generation unit 78 is converted into an analog signal by a drive signal D / A 84 that is a converter for converting a digital value into an analog value, and further, for driving an actuator by an amplifier 86 such as a power amplifier. And then input to the stator 46 of the actuator 36.

  As a result, the mover 48 of the actuator 36 is driven and controlled, and vibration that cancels the axial vibration of the rod 102 in a predetermined frequency range is applied to the rod 102. Therefore, the rod transmitted from the tire 116 to the rod 102 is controlled. The vibration in the predetermined frequency region in the axial direction L1 of 102 can be reduced, and the noise in the passenger compartment caused by the vibration can be reduced. In particular, by driving and controlling the actuator 36 so as to cancel vibrations in the frequency range of 150 to 250 Hz, it is possible to effectively reduce noise in the passenger compartment caused by cavity resonance.

  The suspension support 10 of the present embodiment is a relatively compact device due to the combination of the direction of magnetomotive force of each of the pair of permanent magnets 68 and 70 having different polarities and the magnetomotive force generated in the coil 72. However, a larger output than the moving magnet type can be obtained.

  The present invention can be particularly preferably used in a strut type or double wish pawn suspension of a vehicle such as an automobile. The axial direction L1 of the rod 102, the axial direction L2 of the shaft member 44, and the axial direction L3 of the stator 46 are the same direction.

Suspension support longitudinal section Suspension support enlarged longitudinal section Schematic diagram of vehicle with suspension support Schematic illustration showing the action of the actuator Schematic explanatory diagram showing the action of the actuator when a current is passed through the coil in the positive direction Schematic explanatory diagram showing the action of the actuator when a current is passed through the coil in the reverse direction Block diagram of noise reduction system using suspension support

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Suspension support 12 Inner attachment member 14 Outer attachment member 16 Anti-vibration base | substrate 16a Anti-vibration base | substrate part 16b Anti-vibration base | substrate part 18 Attachment part 18J Upper end part 20 of an attachment part 20 Cylindrical part 20J Upper end part (upper end part of a cylinder part)
20K Lower end (lower end of the cylinder)
22 Flange portion 22G Flange portion outer peripheral surface 22U Flange portion upper surface 24 Excitation plate 24K Excitation plate lower surface 24E Excitation plate outer peripheral edge portion 26 Plate member 26a Through hole 28 Cup-shaped member 28a Through hole 28b Mounting plate 34 Storage space 36 for vibration base Actuator (vibration means)
38 Housing member 40 Main body portion 40a Second flange portion 41 First bolt 42 Top plate portion 44 Shaft member 44K Shaft member lower end portion 44P Shaft member outer periphery 46 Stator 48 Movable member 51 Connecting member 53 Second tube portion 53N Inner peripheral surfaces 54, 54 of the second cylindrical portion 54, 56 Magnetic pole portion 58 Second bolt 60 Magnetic material portions 62, 62 Leaf spring 64 Pipe member 66 Second nuts 68, 68, 70, 70 Permanent magnets 72, 72 Coil 73 Inner space 74 Vibration sensor (vibration detecting means)
76 Microphoron 78 Drive signal generator 80 Reference signal A / D
82 Error signal A / D
84 Drive signal D / A
86 Amplifier 100 Shock absorber 102 Rod 102a Rod upper end 102L Rod portion 104 Car body 106 Mounting opening 112 Coil spring 116 Tire (wheel)
117 First nut 118 Stepped portion K1 Radially outward side K2 Radially inward side L1 Axial direction (rod axial direction)
L2 axial direction (axial direction of the shaft member)
L3 axial direction (axial direction of stator)
N, N, N, N N pole O shaft core (rod shaft core)
S, S, S, S S pole U Above

Claims (5)

A cylindrical inner mounting member that is attached to the upper end of the shock absorber rod, an outer mounting member that surrounds the inner mounting member and is mounted on the vehicle body side, and is interposed between the inner mounting member and the outer mounting member. A suspension support comprising a vibration-proof base made of a rubber-like elastic body that connects the outer mounting member and the inner mounting member,
The inner mounting member includes a cylindrical mounting portion through which the upper end portion of the rod is inserted, and a flange portion that protrudes radially outward from the mounting portion and is embedded in the vibration isolation base.
An electromagnet type excitation means for exciting the flange portion in the axial direction of the rod and canceling the vibration of the rod in the axial direction;
The vibration means includes a vertical shaft member positioned above the rod, a stator disposed radially outward of the shaft member, and a rod portion protruding upward from an upper end portion of the mounting portion. And a flange-like excitation projecting radially outward from the lower end of the cylinder so as to be positioned above the flange, and a cylinder having an upper end connected to the lower end of the shaft member And the vibration plate is embedded in the vibration isolation base, a vibration isolation base portion is interposed between the lower surface of the vibration plate and the upper surface of the flange portion, and the shaft member is the stator. The shaft member is configured as at least a part of a movable element that can reciprocate in the axial direction of the shaft member, and the shaft member is driven in both the forward and backward strokes by exciting a coil provided in the stator. The vibration plate vibrates the flange part. Suspension support that is configured to. The vibration means includes the mover formed by attaching a magnetic material portion to the outer periphery of the shaft member, and the annular stator disposed on the radially outer side of the mover,
The mover is supported by the stator so as to be capable of reciprocating in the axial direction of the shaft member in the inner space of the stator,
The stator includes a magnetic pole portion that protrudes radially inward, and at least a pair of permanent magnets that are adjacent to each other in the axial direction of the stator and have different polarities are disposed in the magnetic pole portion. A coil capable of generating a magnetic flux passing through the pair of permanent magnets is wound around the magnetic pole part, and a combination of magnetomotive force generated by excitation of the coils and each magnetomotive force of each permanent magnet, The suspension support according to claim 1, wherein the movable element is configured to reciprocate in the axial direction of the shaft member.   3. The drive control according to claim 1, wherein the vibration means is driven and controlled to vibrate the flange portion in the axial direction of the rod in accordance with vibration in the axial direction of the rod transmitted from the wheel side of the automobile to the rod. Suspension support as described.   The vibration means is connected to vibration detection means for detecting vibration in the axial direction of the rod, and is driven and controlled by receiving a signal based on vibration detected by the vibration detection means, so that vibration of the rod The suspension support according to claim 3, wherein the suspension support is configured to give vibration to the rod to cancel the vibration.   A second cylindrical portion surrounding the outer peripheral surface of the flange portion of the inner mounting member is connected to the outer peripheral edge portion of the vibration plate, and between the outer peripheral surface of the flange portion and the inner peripheral surface of the second cylindrical portion. The suspension support according to any one of claims 1 to 4, wherein another vibration isolating base portion connected to the vibration isolating base portion between the lower surface of the vibration plate and the upper surface of the flange portion is interposed.

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