JP2009058099A - Liquid-sealed mount device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a compact liquid-sealed mount device at low cost in which a movable member can be manipulated artificially, reducing engine noise and improving the ride comfort of a vehicle. <P>SOLUTION: The liquid-sealed mount device 1 is provided, in an intermediate chamber B, with the magnetic movable member 20 movable in the intermediate chamber B following flow of a liquid between a pressure receiving chamber A and an equilibrium chamber C through the intermediate chamber B. At least one of a pressure receiving chamber side wall part and an equilibrium chamber side wall part of the intermediate chamber B includes magnetic bodies 30, 32 to change the magnetic field within the intermediate chamber B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, the partition member is provided with an orifice passage that allows the pressure receiving chamber and the equilibrium chamber to communicate with each other, and an intermediate chamber that allows the pressure receiving chamber and the equilibrium chamber to communicate with each other, so that the pressure receiving chamber, the equilibrium chamber, and the intermediate chamber are not compressed. The present invention relates to a liquid-sealed mount device in which a liquid of the nature is sealed.

  As a conventional technique, for example, as disclosed in Patent Document 1, the first liquid chamber (22 in FIG. 2 of Patent Document 1) and the second liquid chamber (23 in FIG. 2 of Patent Document 1) communicate with each other. A movable plate (28 in FIG. 2 of Patent Document 1) is disposed in the space to be moved, and this movable plate moves up and down with a minute amplitude to absorb pressure fluctuations in the first liquid chamber, and a high frequency with a relatively small amplitude. While suppressing vibration and reducing engine noise, an annular damping passageway (30 in FIG. 2 of Patent Document 1) is formed in the outer peripheral portion of the stopper member (32 in FIG. 2 of Patent Document 1). 2. Description of the Related Art An anti-vibration support device configured to attenuate low-frequency vibrations having a relatively large amplitude and suppress vibrations such as car shakes by moving liquids in two liquid chambers through a damping passage is known. .

Japanese Patent Laying-Open No. 2006-266303 (see FIG. 1, FIG. 2, FIG. 5, FIG. 6, paragraph number “0028” and paragraph number “0029”)

  In the anti-vibration support device of Patent Document 1, the movable plate is restrained so as not to move up and down by an actuator (35 in FIG. 6 of Patent Document 1) (state of FIG. 5 of Patent Document 1). The chamber liquid is configured to travel back and forth through the attenuation passage. Therefore, by exciting the actuator and restraining the movable plate, the movable plate is artificially moved so that the liquid cannot flow in the space where the opening (h1, h2, etc. in FIG. 2 of Patent Document 1) is blocked. However, the movable plate cannot be artificially operated so that the liquid can flow in the space where the opening (h1, h2, etc. in FIG. 2 of Patent Document 1) is not blocked. It was.

  As a result, for example, in the case where low frequency vibration having a relatively large amplitude is input to the vibration isolating support device regardless of idling, the opening is blocked regardless of idling and attenuation by the attenuation path is exhibited. However, there are problems that the engine noise during idling cannot be sufficiently reduced, and that it is difficult to adjust the engine speed during idling so that the attenuation due to the damping path during idling is not exhibited.

  In the anti-vibration support device of Patent Document 1, an actuator mounted on the lower part of the anti-vibration support device is excited to lower the drive member (36 in FIG. 2 of Patent Document 1), and the movable plate is moved first and second. It is configured to be held between plate holders (26 and 27 in FIG. 2 of Patent Document 1) and restrained so as not to move up and down. As a result, mounting the actuator to the lower part of the vibration isolating support device increases the size of the vibration isolating support device, increasing the weight of the vibration isolating support device, and raising the space for housing the drive member and the drive member. There is a problem that it is necessary to secure a space to be lowered, and the thickness of the partition member (19 in FIG. 2 of Patent Document 1) increases, resulting in an increase in the size of the vibration-proof support device.

  In the anti-vibration support device of Patent Document 1, a gap (α in FIG. 2 of Patent Document 1) is formed between the movable plate and the first and second movable plate holders, and the movable plate moves up and down with a minute amplitude during idling. It is comprised so that it may move and may contact the 1st or 2nd movable plate holder. As a result, if a low frequency vibration having a relatively large amplitude is input, for example, at the time of starting, starting and stopping the engine, the movable plate comes into contact with the first and second movable plate holders and a hitting sound is easily generated. There was room for improvement from the viewpoint of reducing noise during engine start, start and stop.

  An object of the present invention is to realize a liquid-filled mount device that can manually operate a movable member in a compact and low-cost manner, reduce engine noise, and improve the riding comfort of a vehicle or the like.

[I]
(Constitution)
The first feature of the present invention is that the liquid-sealed mount device is configured as follows.
A first mounting member and a second mounting member arranged at a predetermined interval are connected by a rubber elastic body, and a pressure receiving chamber in which a part of the wall portion is configured by the rubber elastic body, and a wall portion. An equilibrium chamber formed of a flexible membrane with a partition member interposed therebetween, an orifice passage communicating the pressure receiving chamber and the equilibrium chamber with each other, and the pressure receiving chamber. An intermediate chamber that communicates with the equilibrium chamber is provided, and an incompressible liquid is sealed in the pressure receiving chamber, the equilibrium chamber, and the intermediate chamber,
A movable member having magnetism that can move in the intermediate chamber as the liquid flows between the pressure receiving chamber and the equilibrium chamber via the intermediate chamber is provided in the intermediate chamber,
A magnetic body is provided on at least one of the pressure receiving chamber side wall and the equilibrium chamber side wall of the intermediate chamber, and the magnetic field in the intermediate chamber can be changed by the magnetic body.

(Function)
According to the first aspect of the present invention, for example, by changing the magnetic field in the intermediate chamber to reveal a state in which the movable member and the magnetic material are in contact with each other, the movable member is a pressure receiving chamber side wall portion or an equilibrium chamber of the intermediate chamber. The movable member is artificially operated so that the liquid can flow in the intermediate chamber that is separated from the side wall portion and the pressure receiving chamber side wall portion and the equilibrium chamber side wall portion are not blocked by the movable member. Between the liquid and the equilibrium chamber. Thus, for example, even when low frequency vibration having a relatively large amplitude is input to the liquid-sealed mounting device in spite of idling, the movable member and the magnetic body By presenting a state where they are mutually recognizable, the flow of liquid in the intermediate chamber is allowed, and the movable member abuts against the pressure receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber, and attenuation by the orifice passage is exhibited. Can be prevented.

  In this case, for example, by changing the magnetic force in the intermediate chamber to change the repulsive force at which the movable member and the magnetic body generate each other, the force with which the movable member separates from the pressure receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber is increased. Alternatively, it can be changed and adjusted weakly, and the speed and range of the movable member moving in the intermediate chamber can be changed and adjusted. As a result, the movement of the movable member can be finely changed and adjusted, and the characteristics of the liquid-sealed mounting device can be changed and adjusted according to the characteristics of the engine.

  According to the first feature of the present invention, for example, by changing the magnetic field in the intermediate chamber to reveal a state in which the movable member and the magnetic body attract each other, the movable member becomes the pressure receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber. The movable member is artificially operated so that the liquid cannot flow in the intermediate chamber in which the pressure receiving chamber side wall or the equilibrium chamber side wall is blocked by the movable member, and the pressure is received via the orifice passage. Liquid flows between the chamber and the equilibrium chamber. As a result, for example, during traveling or cranking, the magnetic field in the intermediate chamber is changed to reveal a state in which the movable member and the magnetic body attract each other. Stable attenuation by the flow path is exhibited, and low frequency vibration having a relatively large amplitude can be effectively attenuated.

  In this case, for example, by changing the attractive force that the movable member and the magnetic body attract each other by changing the magnetic field in the intermediate chamber, the speed at which the movable member comes into contact with the pressure receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber and the movable member Can change and adjust the holding force held in contact with the pressure-receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber. As a result, the movement of the movable member can be finely changed and adjusted, and the characteristics of the liquid-sealed mounting device can be changed and adjusted according to the characteristics of the engine.

  According to the first feature of the present invention, by changing the magnetic field in the intermediate chamber by the magnetic body provided on at least one of the pressure receiving chamber side wall and the equilibrium chamber side wall of the intermediate chamber, the movable member and the magnetic body are mutually connected. It is possible to present a state in which they are in contact with each other or a state in which the movable member and the magnetic body are attracted to each other. Accordingly, for example, compared with a case where the movable member is operated by an actuator or the like, the magnetic body can be accommodated compactly in the pressure receiving chamber side wall portion or the equilibrium chamber side wall portion of the intermediate chamber, and the actuator or the like is moved. Space becomes unnecessary. As a result, a compact intermediate chamber can be configured, and a compact liquid-sealed mount device can be configured.

  According to the first feature of the present invention, by changing the magnetic field in the intermediate chamber and revealing a state in which the movable member and the magnetic body are able to produce each other, the amplitude is compared, for example, when starting, starting and stopping the engine. Even when a relatively large low-frequency vibration is input, the movable member and the magnetic body are in contact with each other, making it difficult for the movable member to contact the pressure receiving chamber side wall portion and the equilibrium chamber side wall portion of the intermediate chamber. In this case, for example, by changing the magnetic force in the intermediate chamber to change the repulsive force at which the movable member and the magnetic body generate each other, the timing at which the movable member contacts the pressure receiving chamber side wall portion and the equilibrium chamber side wall portion of the intermediate chamber, You can change and adjust the speed. As a result, it is possible to suppress the hitting sound caused by the movable member coming into contact with the wall portion of the intermediate chamber.

(The invention's effect)
According to the first feature of the present invention, engine noise during idling can be reduced, and attenuation by the orifice passage can be achieved by changing the magnetic field in the intermediate chamber without adjusting the engine speed during idling. The engine can be easily tuned.

  According to the first feature of the present invention, engine vibration during traveling or cranking becomes difficult to be transmitted to the vehicle, and the riding comfort of the vehicle or the like during traveling or cranking can be improved.

  According to the first feature of the present invention, the structure of the liquid-sealed mounting device capable of manipulating the movable member can be simplified, and the liquid-sealed mounting device can be realized in a compact and low-cost manner.

  According to the first feature of the present invention, it is possible to suppress the generation of a hitting sound when low-frequency vibration having a relatively large amplitude is input, and to reduce noise at the time of starting, starting and stopping the engine.

[Overall configuration of engine mount]
The engine mount 1 (corresponding to a liquid-filled mount device) will be described with reference to FIGS. FIG. 1 shows a longitudinal side view of the engine mount 1, and FIG. 2 shows a cross-sectional plan view at the position XX in FIG. 3 shows a detailed longitudinal side view of the vicinity of the intermediate chamber B, and FIG. 4 shows a perspective view illustrating the detailed structure in the intermediate chamber B. As shown in FIG. In FIG. 4, the vertical dimension of the intermediate chamber B is displayed longer than the actual dimension.

  As shown in FIGS. 1 to 3, the first mounting bracket 2 (corresponding to the first mounting member) and the second mounting bracket 3 (corresponding to the second mounting member) are arranged at a predetermined interval. The first mounting bracket 2 and the second mounting bracket 3 are elastically connected by a main body rubber 4 (corresponding to a rubber elastic body). The first mounting bracket 2 is formed with a nut portion 2a. An engine (not shown) is placed on the upper surface side of the first mounting bracket 2, and a bolt (not shown) is attached to the nut portion 2a from above. The one side (upper part) of the engine mount 1 can be connected to the engine side.

  The second mounting bracket 3 includes a cylindrical support cylinder 3a and a caulking part 3b formed by bending from the lower end of the support cylinder 3a. The support cylinder 3a or the caulking part 3b is provided. Is fitted into a bracket (not shown) connected to a vehicle body (not shown), so that the other side (lower part) of the engine mount 1 can be connected to the vehicle body side.

  In the lower part of the main body rubber 4, a recessed portion 4 a recessed upward is formed, and a pressure receiving chamber A is formed by the recessed portion 4 a and the partition plate 5. The partition plate 5 (corresponding to a partition member) is made of aluminum and is formed in a disk shape. A communication port 5a that communicates vertically is formed at the center of the partition plate 5, and a vertically oriented orifice hole 5b is formed at the side thereof. ing.

  The orifice member 10 (corresponding to a partition member) is made of aluminum and has a truncated cone shape, and a cylindrical penetrating portion 11 communicating with the orifice member 10 in the vertical direction is formed.

  Upper and lower mounting grooves 12 for mounting a pressure receiving chamber side electromagnet 30 and an equilibrium chamber side electromagnet 32, which will be described later, are formed in the upper and lower portions of the penetrating portion 11 of the orifice member 10, and the upper mounting groove 12 is made of aluminum. The pressure-receiving chamber-side electromagnet 30 and the pressure-receiving chamber side are installed by inserting and inserting a pressure-receiving chamber-side electromagnet 30 (described later) with the disc-shaped pressure-receiving chamber-side support plate 31 therebetween. The support plate 31 can be fixed to the upper part of the orifice member 10, and an equilibrium chamber side electromagnet 32 to be described later is fitted in the lower mounting groove 12 with an aluminum disc-shaped equilibrium chamber side support plate 33 interposed therebetween. By inserting and attaching a retaining ring 34 made of stainless steel, the equilibrium chamber side electromagnet 32 and the equilibrium chamber side support plate 33 can be fixed to the lower portion of the orifice member 10.

  Thus, an intermediate chamber B is formed between the pressure receiving chamber side support plate 31 and the equilibrium chamber side support plate 33 in the penetrating portion 11 of the orifice member 10, and the equilibrium chamber is formed by the lower surface side of the equilibrium chamber side electromagnet 30 and the diaphragm 6. C is formed.

  A cylindrical positioning portion 13 that protrudes upward is formed on the upper surface side of the side portion of the orifice member 10. By engaging the positioning portion 13 with the orifice hole 5 b of the partition plate 5, an orifice for the partition plate 5 is formed. The position of the member 10 can be determined. An orifice passage 14 having a trapezoidal cross section is formed in the outer peripheral portion of the orifice member 10, and this orifice passage 14 communicates with the equilibrium chamber C from the orifice hole 5 b of the partition plate 5.

  The diaphragm 6 is formed of a thin-film rubber material, and includes a mounting portion 6a located on the outer peripheral portion thereof and a changing portion 6b recessed upward in a hemispherical shape located in the central portion. The volume of the equilibration chamber C changes with the inflow and outflow of the liquid from the pressure receiving chamber A because the change part 6b is elastically deformed up and down. A cored bar member 7 is embedded in the outer peripheral part of the diaphragm 6, and the upper end part of the cored bar member 7 is formed in a shape protruding from the diaphragm 6, and is bent outwardly over the entire circumference. Part 7a is formed.

  Since the partition plate 5 and the orifice member 10 are made of a non-magnetic metal that is difficult to magnetize, the movable member 20 described later can be stably moved in the intermediate chamber B. The partition plate 5 and the orifice member 10 may be made of different nonmagnetic metals, or different nonmagnetic members such as resin may be adopted.

  With the movable member 20 described later disposed in the intermediate chamber B, the pressure receiving chamber side electromagnet 30 and the pressure receiving chamber side support plate 31 are mounted on the upper portion of the orifice member 10, and the equilibrium chamber side electromagnet 32 and the lower portion of the orifice member 10. The equilibrium chamber side support plate 33 is mounted, the positioning portion 13 of the orifice member 10 is positioned in the orifice hole 5 b of the partition plate 5, and the partition plate 5 is brought into contact with the upper surface side of the orifice member 10. Then, the inner surface side of the outer peripheral portion of the diaphragm 6 is brought into contact with the outer peripheral surface of the orifice member 10, and the outer peripheral portion of the partition plate 5 and the flange portion 7 a of the core metal member 7 are vertically moved to the caulking portion 3 b of the second mounting bracket 3. The partition plate 5 and the cored bar member 7 can be fixed to the second mounting member 3 by being clamped and fixed between them, and an incompressible liquid (in the space surrounded by the pressure receiving chamber A, the intermediate chamber B, and the equilibrium chamber C ( The engine mount 1 is configured by enclosing, for example, polyalkylene glycol or silicone.

[Detailed structure of pressure receiving chamber side electromagnet, equilibrium chamber side electromagnet, and movable member]
Based on FIGS. 3 and 4, the detailed structures of the pressure receiving chamber side electromagnet 30 (corresponding to a magnetic body), the equilibrium chamber side electromagnet 31 (corresponding to a magnetic body), and the movable member 20 disposed in the intermediate chamber B will be described. To do.

  As shown in FIGS. 3 and 4, the movable member 20 includes an iron plate-like member 21 and a rubber member 22 mounted so as to cover the entire outer peripheral surface of the plate-like member 21. Has been. The plate member 21 is formed in a disc shape, and a rubber member 22 is integrally formed on the outer peripheral surface of the plate member 21 formed in the disc shape by lining processing. Thus, by covering the plate-like member 21 with the rubber member 22, it is possible to prevent the plate-like member 21 from being rusted, and the movable member 20 contacts the pressure-receiving chamber side support plate 31 or the equilibrium chamber side support plate 33. It is possible to effectively prevent the occurrence of a hitting sound.

  A plurality of annular protrusions 22A are integrally formed on the upper surface side and the lower surface side of the rubber member 22, and when the movable member 20 contacts the pressure receiving chamber side support plate 31 or the equilibrium chamber side support plate 33, The protrusion 22A is elastically deformed, so that it is possible to more effectively prevent the occurrence of hitting sound when the movable member 20 contacts the pressure receiving chamber side support plate 31 or the equilibrium chamber side support plate 33.

  The plate-like member 21 is composed of a magnetic iron plate, and an S-pole is magnetized on the upper surface side of the plate-like member 21 and an N-pole is magnetized on the lower surface side of the plate-like member 21.

  In the state where the liquid does not flow into the equilibrium chamber C or the pressure receiving chamber A from the pressure receiving chamber A or the equilibrium chamber C through the intermediate chamber B as shown in FIG. 3, the lower surface side of the pressure receiving chamber side support plate 31 and the movable member 20. The thickness of the movable member 20 is set such that a predetermined gap is formed between the upper surface side of the movable member 20 and the lower surface side of the movable member 20 and the upper surface side of the equilibrium chamber side support plate 33. Further, the outer diameter of the movable member 20 is set to be slightly smaller than the inner diameter of the penetrating portion 11, so that when the liquid moves in the intermediate chamber B, the plate-like member 20 is substantially horizontal. It can be moved up and down without difficulty.

  A pressure receiving chamber side electromagnet 30 and a pressure receiving chamber side support plate 31 are mounted on the upper portion of the orifice member 10. The pressure-receiving chamber side electromagnet 30 is formed in a disk shape, and a plurality of vertically extending through holes 30A are formed on the outer peripheral portion, and the surface thereof is covered with a resin film and is watertight. A plurality of coils (not shown) are housed inside the pressure receiving chamber side electromagnet 30, and these coils are connected to a wiring connection portion 30 </ b> B formed at the upper end of the pressure receiving chamber side electromagnet 30. Yes. Wiring from the wiring connecting portion 30B is extended to the equilibrium chamber C side through a vertical wiring hole (not shown) of the partition plate 5 and the orifice member 10, and a diaphragm together with wiring of an equilibrium chamber side electromagnet 32 described later. 6 is extended to the outside of the engine mount 1 from the wiring portion 6c in the center portion, and is connected to a control device 40 mounted on the vehicle.

  The pressure receiving chamber side electromagnet 30 is in an attractive state (the movable member 20 and the pressure receiving chamber side electromagnet 30 attract each other) in which the N pole is excited on the lower surface side and the S pole is excited on the upper surface side by the control device 40. A state where a repulsive force is applied (the movable member 20 and the pressure-receiving chamber side electromagnet 30 are in contact with each other) in which the S pole is excited on the lower surface side and the N pole is excited on the upper surface side, and a non-excited state in which the excitation is not performed. It is configured to be changeable (configured to be able to change the magnetic field in the intermediate chamber B), and by changing the output value (current value) from the control device 40 to the pressure receiving chamber side electromagnet 30, the attractive force The magnetic force in the applied state and the repulsive force applied state can be changed and adjusted.

  Although not shown in the figure, the control device 40 does not change the magnetic force of the pressure receiving chamber side electromagnet 30 and changes and adjusts the time and number of times of exciting the pressure receiving chamber side electromagnet 30 to change the magnetic field in the intermediate chamber B. You may comprise so that a magnitude | size can be changed and adjusted large or small.

  The pressure receiving chamber side support plate 31 is formed in the same disk shape as the pressure receiving chamber side electromagnet 30 in a plan view, and a plurality of vertically extending through holes 31 </ b> A are formed in the outer peripheral portion in the same manner as the pressure receiving chamber side electromagnet 30. Thus, the support plate 5 fixes the through hole 30 </ b> A of the pressure receiving chamber side electromagnet 30 and the through hole 31 </ b> A of the pressure receiving chamber side support plate 31 to the upper portion of the orifice member 10. In this way, by attaching the pressure receiving chamber side electromagnet 30 with the pressure receiving chamber side support plate 31 sandwiched therebetween, the lower surface side of the pressure receiving chamber side electromagnet 30 having relatively low strength (relatively fragile) is placed on the pressure receiving chamber side support plate. It can be reinforced by 31 and the pressure receiving chamber side electromagnet 30 can be prevented from being damaged. In addition, the structure which abbreviate | omits the pressure receiving chamber side support plate 31 may be employ | adopted, and the surface of the pressure receiving chamber side electromagnet 30 is formed by integrally forming resin, a nonmagnetic metal, etc. on the surface of the pressure receiving chamber side electromagnet 30. You may comprise so that it may protect.

  Under the orifice member 10, an equilibrium chamber side electromagnet 32 and an equilibrium chamber side support plate 33 are attached by a retaining ring 34. The equilibrium chamber side electromagnet 32 is formed in a disk shape, and a plurality of vertically extending through holes 32A are formed on the outer peripheral portion, and the surface thereof is covered with a resin film to be watertight. The shape of the equilibrium chamber side electromagnet 32 is formed in the same shape as the shape of the pressure receiving chamber side electromagnet 30, thereby making it possible to share parts.

  A plurality of coils (not shown) are housed inside the equilibrium chamber side electromagnet 32, and these coils are connected to a wiring connection portion 32 </ b> B formed at the lower end of the equilibrium chamber side electromagnet 32. Yes. The wiring from the wiring connection portion 32B extends from the wiring portion 6c at the center of the diaphragm 6 together with the wiring of the pressure receiving chamber side electromagnet 30 to the outside of the engine mount 1 and is connected to the control device 40 installed in the vehicle. Yes.

  The equilibrium chamber side electromagnet 32 is in an attractive state (state where the movable member 20 and the equilibrium chamber side electromagnet 32 attract each other) in which the N pole is excited on the lower surface side and the S pole is excited on the upper surface side by the control device 40. The repulsive force application state (state in which the movable member 20 and the equilibrium chamber side electromagnet 32 are in contact with each other) in which the S pole is excited on the lower surface side and the N pole is excited on the upper surface side, and the non-magnetized state in which excitation is not performed. The state can be changed (configured to change the magnetic field in the intermediate chamber B), and by changing the output value (current value) from the control device 40 to the equilibrium chamber side electromagnet 32, The magnetic force in the attractive force applied state and the repulsive force applied state can be changed and adjusted.

  Although not shown in the drawing, the control device 40 does not change the magnetic force of the equilibrium chamber side electromagnet 32, but changes and adjusts the time and number of times of exciting the equilibrium chamber side electromagnet 32, thereby adjusting the magnetic field in the intermediate chamber B. You may comprise so that a magnitude | size can be changed and adjusted large or small.

  The equilibrium chamber side support plate 33 is formed in the same disk shape as the equilibrium chamber side electromagnet 32 in a plan view, and a plurality of vertically extending through holes 33A are formed on the outer peripheral portion in the same manner as the equilibrium chamber side electromagnet 32. Thus, the position of the through hole 32A of the equilibrium chamber side electromagnet 32 and the position of the through hole 33A of the equilibrium chamber side support plate 33 is matched with each other by the retaining ring 34 and fixed to the lower portion of the orifice member 10. In this way, by attaching the equilibrium chamber side electromagnet 32 with the equilibrium chamber side support plate 33 interposed therebetween, the upper surface side of the relatively weak (relatively fragile) equilibrium chamber side electromagnet 32 is placed on the equilibrium chamber side support plate. 33 can be reinforced, and the equilibrium chamber side electromagnet 32 can be prevented from being damaged. In addition, the structure which abbreviate | omits the equilibrium chamber side support plate 33 may be employ | adopted, and the surface of the equilibrium chamber side electromagnet 32 is formed by integrally forming resin, a nonmagnetic metal, etc. on the surface of the equilibrium chamber side electromagnet 32. You may comprise so that it may protect.

  By configuring the engine mount 1 as described above, high-frequency vibration having a relatively small amplitude is input from the engine or the vehicle body to the engine mount 1 when both the pressure-receiving chamber-side electromagnet 30 and the equilibrium chamber-side electromagnet 32 are not excited. In this case, the liquid moves from the pressure receiving chamber A or the equilibrium chamber C to the equilibrium chamber C or the pressure receiving chamber A via the intermediate chamber B, and the movable member 20 moves up and down, so that the pressure is received by the displacement of the movable member 20. The volumes of the chamber A and the equilibrium chamber C are changed, and the vibration damping effect due to the vertical movement of the movable member 20 is exhibited.

  On the other hand, when the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 are both in the non-excited state, when low frequency vibration having a relatively large amplitude is input from the engine or the vehicle body to the engine mount 1, the pressure receiving chamber is moved by the movable member 20. The through hole 31A of the side support plate 31 or the through hole 33A of the equilibrium chamber side support plate 33 is closed, and the pressure receiving chamber A or the equilibrium chamber C is connected via the orifice hole 5b of the partition plate 5 and the orifice passage 14 of the orifice member 10. Then, the liquid moves from the equilibrium chamber C or the pressure receiving chamber A to the vibration attenuation effect by the orifice passage 14.

[Block diagram of control device]
A block diagram of the control device 40 will be described with reference to FIG. FIG. 5 shows a block diagram of the control device 40. As shown in FIG. 5, a vehicle equipped with an engine via the engine mount 1 is equipped with a control device 40.

  Various sensors 41 (for example, a vehicle speed sensor, an acceleration sensor, an engine speed sensor, etc.) are connected to the control device 40 as vehicle state detection means, and the control device 40 is based on the detection results from the various sensors 41. By outputting to various control devices (not shown) connected to the vehicle, various control devices of the vehicle can be controlled.

  First and second electromagnet controllers 42 and 43 are connected to the control device 40. The first electromagnet controller 42 is connected to the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side of the engine mount 1 provided on one side of the engine. The electromagnet 32 is connected, and the second electromagnet controller 43 is connected to the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 of the engine mount 1 provided on the other side of the engine. In addition, although the example which employ | adopted two engine mounts 1 as an engine is shown in this control apparatus 40, you may employ | adopt the engine mount 1 of a different quantity for an engine, for example, employ | adopt four engine mounts 1 for an engine. Also good.

  The first electromagnet controller 42 is configured to be able to individually change and adjust the output current values to the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 based on the output signal from the control device 40. In addition to the first electromagnet controller 42, the electromagnet controller 43 can individually change and adjust the output current values to the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 based on the output signal from the control device 40. It is configured.

  As a result, by outputting the control device 40 to the first electromagnet controller 42, the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 of the engine mount 1 provided on one side of the engine are individually applied with attractive force and repulsive force. The state can be switched between the state and the non-excited state, and the magnetic force in the attractive force applied state and the repulsive force applied state can be individually changed and adjusted. Further, by outputting the control device 40 to the second electromagnet controller 43, the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 of the engine mount 1 provided on the other side of the engine are individually attracted and repulsive. In addition, the state can be switched to the non-excited state, and the magnetic force in the attractive force applied state and the repulsive force applied state can be individually changed and adjusted.

  Based on detection results from various sensors 41 (for example, a vehicle speed sensor, an acceleration sensor, an engine speed sensor, etc.) serving as vehicle state detection means connected to the control device 40, the control device 40 to the first and second electromagnet controllers 42. , 43, and based on the detection results from the various sensors 41, the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32, and the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32. By changing and adjusting the magnetic force, the characteristics of the engine mount 1 can be automatically changed to improve the ride comfort of the vehicle.

[Operation status of movable members]
Based on FIG. 6, the operation state of the movable member 20 is demonstrated. FIG. 6 is a schematic longitudinal sectional view for explaining the operation state of the movable member 20 in the vicinity of the intermediate chamber B. 6 indicates the direction in which the movable member 20 moves, and x in FIG. 6 indicates the non-excited state of the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32.

  As shown in FIG. 6A, when both the pressure-receiving chamber side electromagnet 30 and the equilibrium chamber-side electromagnet 32 are in a non-excited state, when a high-frequency vibration having a relatively small amplitude is input from the engine or the vehicle body to the engine mount 1. When the movable member 20 is allowed to move up and down, the vibration damping effect due to the vertical movement of the movable member 20 is exhibited, and low frequency vibration having a relatively large amplitude is input from the engine or the vehicle body to the engine mount 1. The movable member 20 closes the through hole 31A of the pressure receiving chamber side support plate 31 or the through hole 33A of the equilibrium chamber side support plate 33, so that the vibration damping effect by the orifice passage 14 is exhibited.

  As shown in FIG. 6B, when the pressure receiving chamber side electromagnet 30 is excited in the repulsive force application state and the equilibrium chamber side electromagnet 32 is excited in the repulsive force application state by the output from the control device 40, the pressure receiving chamber side electromagnet 30 and The movable member 20 is in contact with each other, and the equilibrium chamber side electromagnet 32 and the movable member 20 are in contact with each other. Thereby, the state where the movable member 20 floats in the intermediate chamber B can appear, and the movement of the liquid via the intermediate chamber B from the pressure receiving chamber A or the equilibrium chamber C to the equilibrium chamber C or the pressure receiving chamber A can be performed. The movable member 20 is allowed to move up and down, thereby exhibiting a high-frequency vibration damping effect with a relatively small amplitude (in this case, depending on the magnitude of the magnetic force of the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32). (The movable range of the movable member 20 is narrower than in the state of FIG. 6A).

  In this case, the movable range of the movable member 20 can be changed narrowly by strongly changing the magnetic force of the pressure receiving chamber side electromagnet 30 or the equilibrium chamber side electromagnet 32, and the pressure receiving chamber side electromagnet 30 or the equilibrium chamber side electromagnet 32. The range in which the movable member 20 can be moved can be widely changed by changing the magnetic force of the movable member 20 weakly.

  As shown in FIG. 6C, when the pressure receiving chamber side electromagnet 30 is excited to the repulsive state and the equilibrium chamber side electromagnet 32 is excited to the attractive state by the output from the control device 40, the pressure receiving chamber side electromagnet 30 and The movable member 20 is attracted to each other, the equilibrium chamber side electromagnet 32 and the movable member 20 are attracted to each other, and the movable member 20 moves to the equilibrium chamber C side. When the protrusion 22A on the lower surface side of the movable member 20 contacts the equilibrium chamber side support plate 33, the movable member 20 closes the through hole 33A of the equilibrium chamber side support plate 33, and this state is maintained. The vibration damping effect by 14 is exhibited.

  In this case, by changing the magnetic force of the pressure receiving chamber side electromagnet 30 or the equilibrium chamber side electromagnet 32 by the output from the control device 40, the speed at which the movable member 20 moves to the equilibrium chamber C side can be changed or adjusted faster or slower. Further, for example, the magnetic force of the equilibrium chamber side electromagnet 32 is gradually weakened or strengthened, or the magnetic force of the pressure receiving chamber side electromagnet 30 is gradually weakened or strengthened, and the speed of the movable member 20 is gradually decreased or increased. You may comprise so that it may move.

  As shown in FIG. 6 (d), when the pressure receiving chamber side electromagnet 30 is excited to the attractive state and the equilibrium chamber side electromagnet 32 is excited to the repulsive state by the output from the control device 40, the equilibrium chamber side electromagnet 32 and The movable member 20 is attracted to each other, the pressure receiving chamber side electromagnet 30 and the movable member 20 are attracted to each other, and the movable member 20 moves to the pressure receiving chamber A side. When the protrusion 22A on the upper surface side of the movable member 20 contacts the pressure receiving chamber side support plate 31, the through hole 31A of the pressure receiving chamber side support plate 31 is closed by the movable member 20, and this state is maintained. The vibration damping effect by 14 is exhibited.

  In this case, by changing the magnetic force of the pressure receiving chamber side electromagnet 30 or the equilibrium chamber side electromagnet 32 by the output from the control device 40, the moving speed of the movable member 20 to the pressure receiving chamber A can be changed or adjusted faster or slower. Further, for example, the magnetic force of the pressure receiving chamber side electromagnet 30 is gradually weakened or strengthened, or the magnetic force of the equilibrium chamber side electromagnet 32 is gradually weakened or strengthened, and the speed of the movable member 20 is gradually decreased or increased. You may comprise so that it may move.

  As shown in FIG. 6 (e), when the pressure receiving chamber side electromagnet 30 is operated to a non-excited state and the equilibrium chamber side electromagnet 32 is excited to the repulsive state by the output from the control device 40, the equilibrium chamber side electromagnet 32 and The movable member 20 is in contact with each other. As a result, when the liquid moves from the pressure receiving chamber A to the equilibrium chamber C via the intermediate chamber B, the equilibrium chamber side electromagnet 32 and the movable member 20 move to each other to move to the equilibrium chamber side support plate 31 of the movable member 20. The liquid is allowed to move from the pressure receiving chamber A to the equilibrium chamber C via the intermediate chamber B. On the other hand, when the liquid moves from the equilibrium chamber C to the pressure receiving chamber A via the intermediate chamber B, the protrusion 22A on the upper surface side of the movable member 20 comes into contact with the pressure receiving chamber side support plate 31, and the pressure receiving chamber is moved by the movable member 20. The through hole 31A of the side support plate 31 is closed, and the vibration damping effect by the orifice passage 14 is exhibited.

  In this case, for example, the range in which the movable member 20 can move in the intermediate chamber B can be changed by switching between the non-excited state and the repulsive force imparted state of the equilibrium chamber side electromagnet 32. Further, the range in which the movable member 20 can move in the intermediate chamber B can be finely adjusted by changing the magnetic force of the equilibrium chamber side electromagnet 32 by the output from the control device 40.

  Further, for example, the magnetic force of the equilibrium chamber side electromagnet 32 may be gradually increased or decreased so that the speed of the movable member 20 is moved while being gradually increased or decreased. Note that the state of FIG. 6E is shown as an example, and the balance chamber side electromagnet 32 may be operated in a non-excited state and the pressure receiving chamber side electromagnet 30 may be excited in a repulsive state. .

  As shown in FIG. 6 (f), when the pressure receiving chamber side electromagnet 30 is operated to the non-excited state and the equilibrium chamber side electromagnet 32 is excited to the attractive state by the output from the control device 40, the movable member 20 is moved to the equilibrium chamber. The movable member 20 is attracted to the side electromagnet 32 and moves to the equilibrium chamber C side. When the protrusion 22A on the lower surface side of the movable member 20 contacts the equilibrium chamber side support plate 33, the movable member 20 closes the through hole 33A of the equilibrium chamber side support plate 33, and this state is maintained. The vibration damping effect by 14 is exhibited.

  In this case, the speed at which the movable member 20 moves toward the equilibrium chamber C can be changed faster or slower by changing the magnetic force of the equilibrium chamber side electromagnet 32 by the output from the control device 40. Further, for example, the magnetic force of the pressure receiving chamber side electromagnet 30 may be gradually increased or decreased so that the speed of the movable member 20 is moved while being gradually increased or decreased. The state shown in FIG. 6 (F) is shown as an example, and the balance chamber side electromagnet 32 may be operated in a non-excited state, and the pressure receiving chamber side electromagnet 30 may be excited in an attractive state. .

  Based on the detection results from the various sensors 41, the state (operation pattern) of the movable member 20 shown in FIGS. 6A to 6F described above is changed from the control device 40, and automatically. It is comprised so that the characteristic of the engine mount 1 can be changed.

[Intermediate chamber state switching]
Based on FIG. 7, an example of the state switching state in the intermediate chamber B will be described. FIG. 7 is a time chart for explaining an example of a state switching state in the intermediate chamber B. 7 indicates the state of the engine mount 1 for each engine speed when both the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 are operated in a non-excited state, and the dotted line in FIG. 7 indicates the pressure receiving chamber side. The state of the engine mount 1 for each engine speed when the electromagnet 30 or the equilibrium chamber side electromagnet 32 is excited is shown. In FIG. 7, the state of the engine mount 1 in which the vibration attenuation effect due to the vertical movement of the movable member 20 is displayed as the first state, and the vibration reduction effect by the orifice passage 14 is exhibited in the engine mount 1. The state is displayed as the second state.

  As shown in FIG. 7 (a), for example, when the engine speed during idling is set to a low value, low frequency vibration having a relatively large amplitude is input from the engine or the vehicle body to the engine mount 1 in the idling state. Even if two states appear (solid line in FIG. 7 (a)), FIG. 6 (b) (or FIG. 6) in a range (X in FIG. 7 (a)) in which a relatively large low-frequency vibration is input. (V)), the first state in which the flow of liquid between the equilibrium chamber C and the pressure receiving chamber A through the intermediate chamber B is allowed is operated (FIG. 7 ( B) dotted line).

  As a result, as shown by the arrow in FIG. 7 (a), the first state of the engine mount 1 similar to the case where a high-frequency vibration having a relatively small amplitude is input is artificially generated in the range of X in FIG. 7 (a). Therefore, the characteristics of the engine and the characteristics of the engine mount 1 can be matched.

  As shown in FIG. 7 (b), for example, in the running state (or the cranking state (not shown)), a high frequency vibration having a relatively small amplitude is input from the engine or the vehicle body to the engine mount 1 to bring about the first state. 6 (C), 6 (D), or FIG. 6 in a range (Y in FIG. 7 (B)) in which a relatively small high-frequency vibration is input. By appearing the state 6 (f), the second state in which the liquid flows between the equilibrium chamber C and the pressure receiving chamber A through the orifice passage 14 is operated (dotted line in FIG. 7 (b)). ).

  As a result, as shown by the arrow in FIG. 7 (b), the second state of the engine mount 1 similar to the case where the low-frequency vibration having a relatively large amplitude is inputted is shown in the range of Y in FIG. Therefore, the characteristics of the engine and the characteristics of the engine mount 1 can be matched.

  Although not shown, for example, when the engine is determined to be in an idling state based on detection results from various sensors 41 (for example, an engine speed sensor), the state shown in FIG. 6 (B) (or FIG. 6 (E)) is changed. When it appears and operates in the first state and the engine is determined to be in the running state (or cranking state), the state shown in FIG. 6 (c), FIG. 6 (d), or FIG. You may comprise so that it may operate to a 2nd state. With this configuration, even when the first state or the second state appears temporarily at an unpredictable timing, the engine characteristics and the engine mount 1 characteristics can be matched. .

  The state switching state in the intermediate chamber B is shown as an example. Based on the detection results from the various sensors 41, the state shown in FIGS. Or by changing and adjusting the magnetic force of the pressure receiving chamber side electromagnet 30 or the equilibrium chamber side electromagnet 32 to finely change the vibration characteristics of the engine mount 1, the riding comfort of the vehicle can be improved.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], an example is shown in which the engine mount 1 is configured by mounting one movable member 20 in the intermediate chamber B. However, a plurality of movable members 20 (2 One or three or more) may be installed in the intermediate chamber B to constitute the engine mount 1.

  Specifically, as shown in FIG. 8, for example, two movable members 20 are provided in the intermediate chamber B, and the upper movable member 20 and the lower movable member 20 are configured to be in contact with each other. . Then, the upper movable member 20 is operated by the pressure receiving chamber side electromagnet 30 (the magnetic field of the upper portion in the intermediate chamber B is changed by the pressure receiving chamber side electromagnet 30), and the lower movable member 20 is changed by the equilibrium chamber side electromagnet 32. The control device 40 is configured so as to be operated (so that the magnetic field in the lower part of the intermediate chamber B is changed by the equilibrium chamber side electromagnet 32). In this case, the upper movable member 20 and the lower movable member 20 may be configured to be attracted to each other, and the two movable members 20 may be configured by only one of the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32. The control device 40 may be configured to operate according to

[Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention], a south pole is magnetized on the upper surface side of the plate-like member 21 constituting the movable member 20, and the plate-like shape is obtained. Although an example in which the N pole is magnetized on the lower surface side of the member 21 is shown, the N pole may be magnetized on the upper surface side of the plate-like member 21 and the S pole may be magnetized on the lower surface side of the plate-like member 21. Further, as shown in FIG. 9, the arrangement of the N pole and the S pole may be set to different arrangements.

  Specifically, for example, as shown in FIG. 9 (a), a movable member 20 in which N poles and S poles are radially arranged may be adopted. For example, as shown in FIG. You may employ | adopt the movable member 20 which has arrange | positioned N pole and S pole. Further, although not shown, the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 may similarly have different arrangements of the N pole and the S pole. For example, the N pole and the S pole may be radially or strip-shaped. You may employ what was arranged.

[Third Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention] and [Second Alternative Embodiment of the Invention], the plate-like member 21 of the movable member 20 is made magnetic. Although the example comprised with the iron plate shown was shown, as a material of the movable member 20, a different material may be employ | adopted, for example, the movable member 20 may be comprised with the different magnetic metal which is easy to magnetize, and magnetic For example, the movable member 20 may be composed of a permanent magnet.

  In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention] and [Second Alternative Embodiment of the Invention], the pressure receiving chamber side electromagnet 30 and the equilibrium chamber are used as magnetic bodies. Although the example which employ | adopted the side electromagnet 32 was shown, it replaced with the pressure receiving chamber side electromagnet 30 or the balance chamber side electromagnet 32, and the pressure receiving chamber side magnetic body or balance chamber comprised with the permanent magnet or the magnetic metal with magnetism etc. By adopting a side magnetic body (not shown), for example, by driving (for example, rotating) the pressure receiving chamber side magnetic body or the equilibrium chamber side magnetic body by an actuator (not shown) connected to the control device 40, You may comprise so that the magnetic field in the intermediate chamber B can be changed.

[Fourth Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment], [Second Alternative Embodiment] and [Third Alternative Embodiment], the pressure is received. Although the chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 are provided and the magnetic field in the intermediate chamber B can be changed by both of them, the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32 are shown. Only one of them may be provided in the engine mount 1 to change the magnetic field in the intermediate chamber B.

  The movable shown in [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention], [Second Alternative Embodiment of the Invention] and [Third Alternative Embodiment of the Invention] described above. The shape and structure of the member 20 and the magnetic body (the pressure receiving chamber side electromagnet 30 and the equilibrium chamber side electromagnet 32) are shown as examples, and different shapes and structures may be adopted as long as they perform the same function. Also good.

  The engine shown in the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment], [Second Alternative Embodiment] and [Third Alternative Embodiment] The mounting structure of the engine mount 1 to the vehicle body is shown as an example, and the shapes of the first mounting bracket 2, the second mounting bracket 3, the main body rubber 4, the partition plate 5 as the partition member, the orifice member 10, and the like. The same can be applied to the engine mount 1 having a different structure or the like.

Overall vertical side view of engine mount Whole cross-sectional plan view of engine mount Detailed vertical side view of the middle chamber A perspective view explaining the detailed structure of the intermediate chamber Block diagram of control device Schematic side view showing operation status of electromagnet and movable member Time chart explaining an example of the state switching state of the intermediate chamber The schematic longitudinal cross-sectional view which shows the structure in the middle chamber in 1st another form of implementation of invention Schematic plan view of a movable member in a second alternative embodiment of the invention

Explanation of symbols

1 Engine mount (liquid-filled mounting device)
2 First mounting bracket (first mounting member)
3 Second mounting bracket (second mounting member)
4 Body rubber (rubber elastic)
5 Partition plate (partition member)
10 Orifice member (partition member)
14 Orifice passage 20 Movable member 30 Pressure receiving chamber side electromagnet (magnetic material)
32 Equilibrium chamber side electromagnet (magnetic material)
A Pressure receiving chamber B Intermediate chamber C Equilibrium chamber

Claims (1)

A first mounting member and a second mounting member arranged at a predetermined interval are connected by a rubber elastic body, and a pressure receiving chamber in which a part of the wall portion is configured by the rubber elastic body, and a wall portion. An equilibrium chamber formed of a flexible membrane with a partition member interposed therebetween, an orifice passage communicating the pressure receiving chamber and the equilibrium chamber with each other, and the pressure receiving chamber. An intermediate chamber that communicates with the equilibrium chamber is provided, and an incompressible liquid is sealed in the pressure receiving chamber, the equilibrium chamber, and the intermediate chamber,
A movable member having magnetism that can move in the intermediate chamber as the liquid flows between the pressure receiving chamber and the equilibrium chamber via the intermediate chamber is provided in the intermediate chamber,
A liquid-filled mount device comprising a magnetic body on at least one of a pressure receiving chamber side wall and an equilibrium chamber side wall of the intermediate chamber, and configured to change a magnetic field in the intermediate chamber by the magnetic body.

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