WO2006054336A1 - Liquid-sealed vibration damping device and liquid-sealed vibration damping device unit - Google Patents

Liquid-sealed vibration damping device and liquid-sealed vibration damping device unit Download PDF

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Publication number
WO2006054336A1
WO2006054336A1 PCT/JP2004/017045 JP2004017045W WO2006054336A1 WO 2006054336 A1 WO2006054336 A1 WO 2006054336A1 JP 2004017045 W JP2004017045 W JP 2004017045W WO 2006054336 A1 WO2006054336 A1 WO 2006054336A1
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WO
WIPO (PCT)
Prior art keywords
liquid
vibration
fixture
rubber
vibration isolator
Prior art date
Application number
PCT/JP2004/017045
Other languages
French (fr)
Japanese (ja)
Inventor
Shingo Hatakeyama
Hikofumi Yamamoto
Original Assignee
Toyo Tire & Rubber Co.,Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Tire & Rubber Co.,Ltd. filed Critical Toyo Tire & Rubber Co.,Ltd.
Priority to JP2005512257A priority Critical patent/JP4077007B2/en
Priority to PCT/JP2004/017045 priority patent/WO2006054336A1/en
Publication of WO2006054336A1 publication Critical patent/WO2006054336A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/10Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
    • F16F13/105Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
    • F16F13/106Design of constituent elastomeric parts, e.g. decoupling valve elements, or of immediate abutments therefor, e.g. cages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12Arrangement of engine supports
    • B60K5/1208Resilient supports

Definitions

  • the present invention relates to a liquid-filled vibration isolator and a liquid-filled vibration isolator unit, and in particular, a low dynamic spring characteristic when a relatively small amplitude vibration is input and a high damping characteristic when a relatively large amplitude is input.
  • the present invention relates to a liquid-filled vibration isolator and a liquid-sealed vibration isolator unit that can sufficiently reduce the occurrence of abnormal noise.
  • a liquid-filled vibration isolator is known as an anti-vibration device that supports and fixes a vibration generating body such as an automobile engine or transmission while preventing the vibration from being transmitted to a vehicle body frame.
  • liquid-filled vibration isolator generally, a first attachment attached to the engine side and a second attachment attached to the body frame side are connected by an anti-vibration base composed of a rubbery elastic body force. Is done. And the liquid enclosure chamber is formed between the diaphragm and the vibration isolating base by the diaphragm attached to the second fixture.
  • the liquid sealing chamber is partitioned into two chambers, a first liquid chamber and a second liquid chamber, by a partitioning means, and the first and second liquid chambers communicate with each other by an orifice.
  • the vibration damping function and the vibration insulation function are achieved by the fluid flow effect between the first and second liquid chambers by the orifice and the vibration damping effect of the vibration isolating substrate.
  • the partitioning unit includes an elastic partition film and a pair of displacement restricting members that restrict the displacement amount of the elastic partition film.
  • the elastic partition film is less likely to be reciprocally displaced. It is possible to avoid the occurrence of abnormal noise by avoiding collision with the displacement regulating member, but in this case, the elastic partition membrane is difficult to deform following the hydraulic pressure fluctuation between the two liquid chambers. Absorption of fluid pressure fluctuations becomes difficult and low dynamic spring characteristics cannot be obtained.
  • a radial rib is provided on the displacement regulating member, thereby reducing the contact area between the elastic partition film and the displacement regulating member. Reduce the noise to suppress the generation of abnormal noise! (Patent Document 1).
  • Patent Document 1 JP-A-6-221368 (Fig. 4 etc.)
  • the conventional configuration described above has a problem in that the abnormal noise generated due to the collision between the elastic partition film and the displacement regulating member cannot be sufficiently reduced. .
  • the present invention has been made to solve the above-described problems, while ensuring a low dynamic spring characteristic at the time of relatively small amplitude vibration input and a high damping characteristic at the time of relatively large amplitude input.
  • An object of the present invention is to provide a liquid-filled vibration isolator and a liquid-filled vibration isolator unit that can sufficiently reduce the occurrence of abnormal noise. Means for solving the problem
  • the liquid-filled vibration isolator according to claim 1 includes a first mounting tool, a cylindrical second mounting tool, the second mounting tool, and the second mounting tool.
  • a vibration isolating base made of a rubber-like elastic material connected to a fixture, a diaphragm attached to the second fixture to form a liquid enclosure between the vibration isolating base, and the liquid sealed Partition means for partitioning the chamber into a first liquid chamber on the vibration isolation base side and a second liquid chamber on the diaphragm side, and formed between an outer peripheral surface of the partition means and an inner peripheral surface of the second fixture.
  • an orifice for communicating the first liquid chamber and the second liquid chamber, and the partition means is rubber-like
  • An elastic partition membrane composed of an elastic material cover, a thin plate member embedded in the elastic partition membrane and configured in a substantially thin plate shape from a metal material, and sandwiching and fixing the elastic partition membrane in the axial direction
  • the elastic partition membrane is located at a radially outer side of the first rubber portion, and a first rubber portion configured to have a thin taper shape toward the radially outer side.
  • a second rubber portion rising in the axial direction, and the pair of clamping members includes a first stubber surface portion capable of receiving the first rubber portion of the elastic cut film, and the axial direction of the first stubber surface portion.
  • the thin rubber member has an outer peripheral edge which is an end surface on the radially inner side of the pair of sandwiching members.
  • the vehicle body frame side connection means connected to the vehicle body frame side, and the second fixture is configured as a vibration generator side connection means connected to the vibration generator side. A part of the vibration transmission path up to this point is constituted by the vibration-proof base.
  • the liquid-filled vibration isolator according to claim 2 is the liquid-filled vibration isolator according to claim 1, wherein the first staggered surface portion of the pair of clamping members is the partition means.
  • the end portion on the inner side in the radial direction is curved in a circular arc shape.
  • the liquid-filled vibration isolator according to claim 3 is the liquid-filled vibration isolator according to claim 1 or 2, wherein the elastic partition film is opened at a substantially central portion. The opening is formed, and only the peripheral edge of the thin plate member is embedded in the elastic partition membrane.
  • the liquid-filled vibration isolator according to claim 4 is the liquid-filled vibration isolator according to any one of claims 1 to 3, wherein the partition means is assembled.
  • the second stubber surface portion of the pair of clamping members presses the second rubber portion of the elastic partition membrane in the axial direction of the partition means, thereby preloading the second rubber portion of the elastic partition membrane. It is configured to be contracted.
  • the liquid-filled vibration isolator according to claim 5 is the liquid-filled vibration isolator according to any one of claims 1 to 4;
  • the sandwiching member is made of a thermoplastic resin material, and the partitioning means is welded to each other by a welding means. It is structured physically.
  • the liquid-filled vibration isolator according to claim 6 is the liquid-filled vibration isolator according to claim 5, wherein the pair of clamping members protrude from one joint surface. And a concave portion that is recessed in the other joint surface and can receive the convex portion, and is configured to be fitted in the axial direction of the partition means, and the convex portions And the recessed portion are set such that the height of the projecting portion and the depth of the recessed portion are set so that the top portion of the projecting portion and the bottom portion of the recessed portion come into contact with each other when the partition means is in the standing state. .
  • the liquid-filled vibration isolator unit according to claim 7 includes a liquid-filled vibration-proof device according to any one of claims 1 to 6 and a liquid-filled vibration-proof device.
  • a vibration generator side bracket for connecting a vibration device to the vibration generator side, and the second attachment includes a small diameter cylindrical portion and a large diameter cylindrical portion formed to have a larger diameter than the small diameter cylindrical portion.
  • a stepped portion connecting the large-diameter cylindrical portion and the small-diameter cylindrical portion, and the large-diameter cylindrical portion is press-fitted into the inner peripheral portion of the vibration generator side bracket,
  • an abutting portion capable of abutting on a stepped portion of the second fixture fitted and fitted into the inner peripheral portion is formed to project radially inward.
  • the liquid-filled vibration isolator unit according to claim 8 is the liquid-filled vibration isolator unit according to claim 7, wherein the second fitting has the large-diameter cylindrical portion. It is located closer to the first fixture than the small-diameter cylindrical portion, and the large-diameter cylindrical portion is press-fitted into the inner peripheral portion of the vibration generator-side bracket.
  • the step portion of the second fixture is configured to be positioned closer to the first fixture than the contact portion of the vibration generator side bracket.
  • the thin plate member made of a metal material and having a substantially thin plate shape is embedded in the elastic partition film, vibration input with a relatively small amplitude is provided. It is possible to reduce the generation of abnormal noise while ensuring the low dynamic spring characteristics at the time and the high damping characteristics at the time of relatively large amplitude vibration input.
  • the thin plate member constituted by the metal material member reinforces the rigidity of the elastic partition membrane and Whole membrane Deformation as a body can be regulated. Therefore, since the liquid can smoothly flow to the orifice, the fluid flow effect can be sufficiently exerted and high attenuation characteristics can be obtained.
  • the outer peripheral edge of the thin plate member is located on the radially outer side of the end surface on the radially inner side of the clamping member, the outer peripheral edge of the thin plate member in the axial direction of the partition means A pair of clamping members can be polymerized. As a result, the reciprocating displacement of the elastic partition membrane can be more easily regulated, so that high damping characteristics can be obtained more reliably when a relatively large amplitude vibration is input.
  • the opening area for transmitting the hydraulic pressure of the first or second liquid chamber to the elastic partition membrane is narrowed by the amount of the displacement regulating member, so that the hydraulic pressure difference is reduced.
  • the liquid-filled vibration isolator of the present invention it is possible to greatly expand the opening area without the need to provide a displacement restricting member, so that the liquid pressure difference can be absorbed more efficiently. Therefore, the low dynamic spring characteristics can be obtained with certainty.
  • the first rubber portion of the elastic partition membrane is formed in a taper shape that becomes thinner toward the outer side in the radial direction, the action of the taper shape makes it easier to reciprocate the elastic partition membrane. As a result, the spring characteristics can be further lowered when the vibration having a relatively small amplitude is input.
  • the first attachment is configured as vehicle body frame-side connection means connected to the vehicle body frame, and the second attachment is connected to the vibration generator.
  • the vibration generating body side connecting means is configured so that a part of the vibration transmission path from the partitioning means (the elastic cutting film and the clamping member) to the vehicle body frame is formed by the vibration isolating base. Can be configured.
  • the first staggered surface is formed of partition means. Since the radially inner end is curved in a circular arc shape, the action of the circular arc shape in the cross section facilitates the reciprocating displacement of the elastic partition film, and vibration with a relatively small amplitude. While improving the low dynamic spring characteristics when the is input, the wear and damage of the first rubber part due to contact with the end of the first staggered surface is suppressed, and the durability of the elastic partition membrane as a whole is improved. There is an effect that can be achieved.
  • the opening area of the opening can be changed and the rigidity of the entire elastic partition membrane can be adjusted as appropriate. effective.
  • desired dynamic characteristics for example, high damping characteristics and low dynamic spring characteristics
  • the partition means In the assembled state, the second stopper surfaces of the pair of clamping members press the second rubber part of the elastic partition film in the axial direction of the partition means, and the second rubber part of the elastic partition film is pre-compressed. Since it is configured to be applied, the second rubber portion is filled between the second staggered surface portions, and the effect of suppressing the generation of a gap between the second stubber surface portion and the second rubber portion can be suppressed. There is.
  • the partitioning means is integrated outside the liquid tank, the partitioning means is inserted into the cylindrical body of the second fixture in the liquid tank. Since the liquid-filled vibration isolator can be assembled, there is an effect that the assemblability can be improved as compared with the case where a plurality of parts are inserted into the second fixture in the liquid tank.
  • each of the pair of sandwiching members is made of a resin material, there is an effect that the weight of the partition means can be significantly reduced as compared with the case where the pair of holding members is made of a metal material.
  • the joining surfaces of the pair of sandwiching members are configured to be welded by the welding means, for example, a member that also has a metal material force is integrated by the pressing means or the welding means.
  • the manufacturing equipment can be reduced in size, the process can be simplified, and the energy consumption can be reduced. Thus, there is an effect that the manufacturing equipment can be integrated more quickly and at a lower cost.
  • the pair of sandwiching members have their joint surfaces Are provided with a projecting portion and a recessed portion, and are configured to fit together in the axial direction of the partitioning means.
  • the welding operation can be performed with the sandwiching member temporarily fixed, and the work efficiency can be improved. is there.
  • the pair of clamping members can be relatively positioned in the radial direction by fitting in the axial direction, the positioning work in the radial direction when performing the welding operation can be omitted. effective.
  • the convex portion and the concave portion are configured such that the top portion of the convex portion and the bottom portion of the concave portion can contact each other, the position of the contact surface between the top portion and the bottom portion is convex. It can be brought closer to one end surface of the holding member by the protruding height of the mounting portion (the depth of the recessed portion). Therefore, the distance between the contact surface between the top and bottom and the vibration transmitter (horn) of the ultrasonic welding means and the laser irradiator of the laser welding means can be reduced, so that vibration and heat from the welding means can be reduced. Can be efficiently transmitted to the abutment surface, and if the abutment surface can be more reliably welded to that extent, there is an effect!
  • the stepped portion is provided on the second fixture and the contact portion is provided on the inner peripheral portion of the vibration generator side bracket.
  • the second fixture is press-fitted into the inner peripheral portion of the vibration generator-side bracket, there is an effect that positioning in the press-fitting direction can be performed by bringing the step portion into contact with the contact portion.
  • the second fixture is caused to vibrate by the stepped portion coming into contact with the contact portion. There is an effect that it is possible to avoid the loss of the inner peripheral force of the body side bracket.
  • the large-diameter tube portion is a small-diameter tube. If the second fixture is configured so that it is located on the first fixture side of the bracket, and the large-diameter cylindrical portion is press-fitted into the inner periphery of the vibration generator side bracket, the second fixture Since the step is positioned closer to the first fixture than the abutment of the vibration generator side bracket, it is more certain that the second fixture will lose the inner peripheral force of the vibration generator side bracket. It can be avoided!
  • the vibration generator side bracket when the vibration generator side bracket is displaced in the shared load direction after the vibration generator is supported and fixed (that is, the second fixture is displaced toward the first fixture).
  • the elastic recovery force of the vibration-damped base body that has been compressed and deformed acts as a force that hinders the movement of the second fixture, so the second fixture can easily remove the inner peripheral force of the vibration generator side bracket.
  • the stepped portion of the second fixture comes into contact with the contact portion of the vibration generator side bracket, thereby avoiding the above-described disconnection. Can do.
  • FIG. 1 is a schematic diagram showing a usage state of a liquid-filled vibration isolator according to a first embodiment of the present invention, (a) is a top view, and (b) is FIG. 1 (a). It is the side view seen from the arrow lb direction.
  • FIG. 2 is a cross-sectional view of the liquid filled type vibration isolator taken along line II-II in FIG. 1 (a).
  • FIG. 3 (a) is a top view of the elastic partition membrane, and (b) is a cross-sectional view of the elastic partition membrane along the nib-nib line in FIG. 3 (a).
  • FIG. 4A is a top view of the upper clamping member
  • FIG. 4B is a cross-sectional view of the upper clamping member taken along line IVb-IVb in FIG. 4A.
  • FIG. 5 (a) is a top view of the lower holding member
  • FIG. 5 (b) is a cross-sectional view of the lower holding member taken along the line Vb-Vb in FIG. 5 (a).
  • FIG. 6 (a) is a top view of the partitioning means, and (b) is a cross-sectional view of the cutting means taken along the line VIb-VIb of FIG. 6 (a).
  • FIG. 7 is a partially enlarged cross-sectional view of the partition means.
  • FIG. 8 is a cross-sectional view of a liquid-filled vibration isolator in a second embodiment.
  • FIG. 9 is a cross-sectional view of a liquid-filled vibration isolator according to a third embodiment.
  • FIG. 10 (a) is an exploded sectional view of the partitioning means, and (b) is a sectional view of the partitioning means.
  • Second mounting bracket (Second mounting bracket, vibration generator side coupling means) 2a Large diameter tube
  • B2 B12 Engine side bracket (vibration generator side bracket, part of liquid-filled vibration isolator unit)
  • B12b contact part contact part of vibration generator side bracket
  • FIG. 1 is a schematic diagram showing a usage state of the liquid-filled vibration isolator 100 according to the first embodiment of the present invention, (a) is a top view, and (b) is a diagram of FIG. ) Arrow lb direction force side view.
  • the liquid-filled vibration isolator 100 is a vibration isolator for supporting and fixing the engine EG of the automobile and preventing the vibration of the engine EG from being transmitted to the body frame BF, as shown in FIG. Further, it is connected to the vehicle body frame BF via the vehicle body frame side bracket B1, while being connected to the engine EG via the engine side bracket B2.
  • the vehicle body frame side bracket B1 is fastened and fixed to the vehicle body frame BF by bolts (not shown) threaded through the mounting hole Bla, and the engine side bracket B2 is threaded through the mounting hole B2 a. It is fastened and fixed to the engine side member EG1 by a bolt (not shown). Therefore, a shared load acts on the liquid-filled vibration isolator 100 that supports and fixes the engine EG in the downward direction of FIG. 1 (b).
  • FIG. 2 is a cross-sectional view of the liquid-filled vibration isolator 100 along the ⁇ - ⁇ line of FIG. 1 (a).
  • the first mounting bracket 1 is not shown in cross section.
  • the center line indicated by the alternate long and short dash line in FIG. 2 indicates the axis O of the liquid-filled vibration isolator 100.
  • the liquid-filled vibration isolator 100 includes a first mounting bracket 1 attached to the vehicle body frame BF (see FIG. 1 (b)) via the vehicle body frame side bracket B1, and an engine.
  • a cylindrical second mounting bracket 2 attached to the side of the engine EG (see FIG. 1 (b)) via the side bracket B2 and a vibration-proof base 3 composed of a rubber-like elastic body are connected. Mainly prepared.
  • the first mounting bracket 1 is formed in a substantially truncated conical shape with an upper constriction symmetrical about the force axis, such as aluminum alloy, and has a body frame B1 on its lower end surface.
  • the female screw portion 11 for fastening and fixing is recessed upward.
  • a positioning pin 12 is provided so as to be fitted into the concave portion of the body frame side bracket B1.
  • the second mounting bracket 2 is formed in a cylindrical shape in which the upper and lower ends (upper and lower sides in Fig. 2) of the steel material force are opened.
  • the second mounting bracket 2 has a step, and the lower side of the step (lower side in FIG.
  • the second mounting bracket 2 has a large-diameter cylindrical portion 2a fitted into the inner peripheral portion of the engine side bracket B2.
  • the vibration isolator base 3 is formed in a substantially frustoconical shape with a constricted bottom surface symmetrical about the axis of the rubber-like elastic body force. And the lower end side (mainly the large diameter cylindrical portion 2a) of the second mounting bracket 2 are vulcanized and bonded.
  • the first mounting bracket 1 is configured as the vehicle body frame side connecting means connected to the vehicle body frame BF side, and the second mounting is performed. Since the bracket 2 is configured as a vibration generator side coupling means that is coupled to the engine EG (vibration generator) side, a part of the vibration transmission path from the partition means 7 to the vehicle body frame BF, which will be described later, is configured by the vibration isolation base 3. Is done.
  • a rubber film 31 covering the inner peripheral surface of the second mounting bracket 2 (mainly the small diameter cylindrical portion 2b) is connected to the upper end portion (upper side in FIG. 2) of the vibration isolating base 3.
  • the rubber film 31 is in close contact with projecting walls 9d and 10d (see FIGS. 4 and 5) of the upper and lower clamping members 9 and 10, which will be described later, and the mounting bracket 51 of the diaphragm 5 respectively.
  • the diaphragm 5 is formed from a rubber-like elastic body into a rubber film shape having a partial spherical shape, and the upper end (see FIG. 2) of the second mounting bracket 2 (small-diameter cylindrical portion 2b). 2 Upper side).
  • a liquid sealing chamber 6 is formed between the lower surface side of the diaphragm 5 and the upper surface side of the vibration isolating substrate 3.
  • the liquid enclosing chamber 6 contains an antifreeze liquid (not shown) such as ethylene glycol. Further, as shown in FIG. 2, the liquid sealing chamber 6 has partition means 7 (elastic partition membrane). 8 and the upper and lower clamping members 9, 10), the first liquid chamber 6A on the vibration isolator base 3 side (lower side in FIG. 2) and the second liquid chamber 6B on the diaphragm 5 side (upper side in FIG. 2) It is divided into rooms.
  • partition means 7 elastic partition membrane
  • the diaphragm 5 is vulcanized and bonded to a donut-shaped mounting bracket 51 as viewed from above, and as shown in FIG. 2, the upper end portion of the second mounting bracket 2 (see FIG. 2 Upper side).
  • the partition means 7 cuts the liquid sealing chamber 6 into the first liquid chamber 6A and the second liquid chamber 6B, and is configured in a substantially disc shape such as a rubber-like elastic member. And an upper and lower holding members 9 and 10 for holding and fixing the elastic partition film 8 in the axial direction.
  • an orifice 20 is provided between the inner peripheral side (rubber film 31) of the second mounting bracket 2. Is formed.
  • the orifice 20 is an orifice channel that allows the first liquid chamber 6A and the second liquid chamber 6B to communicate with each other.
  • the orifice 20 is communicated with the second liquid chamber 6B through a notch 9dl formed in a notch on the overhanging wall 9d (see Fig. 4) of the upper clamping member 9, while the lower clamping is performed.
  • the member 10 communicates with the first liquid chamber 6A through a notch 10dl formed in the projecting wall 10d (see FIG. 5).
  • the partition means 7 and the diaphragm 5 are fitted in order from the upper end side (the upper side in FIG. 2) of the second mounting bracket 2, and then the second mounting bracket 2 is fitted. This is done by reducing (drawing) the entire small diameter cylindrical portion 2b of the mounting bracket 2 in the radial direction (left and right direction in FIG. 2). Note that the upper end (upper side in FIG. 2) of the small diameter cylindrical portion 2b is bent inward in the radial direction over the entire circumference.
  • the partition means 7 (upper and lower clamping members 9, 10) is liquid between the partition means receiving portion 32 provided on the vibration isolation base 3 and the diaphragm 5.
  • the sealed vibration isolator 100 is clamped and fixed in the axial direction (vertical direction in Fig. 2).
  • the partition means receiving portion 32 is formed as a step portion at a plurality of locations (or the entire circumference) on the upper surface side of the vibration-isolating base 3, and the lower end surface of the partition means 7 (lower holding member 10) is formed by the step portion. ( Figure 2 lower side)
  • the partition means receiving portion 32 is compressed and deformed, and the elastic restoring force of the partition means receiving portion 32 serves as the holding force of the partition means 7 and the partition means 7 It is acted on the lower end surface.
  • the partition means 7 is firmly and stably held and fixed, resulting in misalignment or resonance of the members 8, 9 and 10. The influence on dynamic characteristics can be avoided.
  • the members 8, 9, and 10 constituting the partitioning means 7 will be described sequentially.
  • the top view of the partitioning means 7 and the cross-sectional views of FIGS. 6 and 7 are appropriately referred to.
  • the center line indicated by the alternate long and short dash line in each figure indicates the axis O of each member 8, 9, and 10.
  • FIG. Figure 3 (a) shows an elastic partition membrane.
  • FIG. 3B is a cross-sectional view of the elastic partition film 8 taken along the nib-nib line in FIG.
  • the elastic partition film 8 is formed in a substantially disc shape from a rubber-like elastic body, and a thin plate member 81 that is formed in a substantially thin plate shape from a metal material is axially disposed therein. It is embedded in the middle of the O direction (Fig. 3 (b) vertical direction).
  • the thin plate member 81 is configured in a substantially disc shape concentric with the elastic partition film 8.
  • an opening 8a having a substantially circular shape when viewed from the axial center O direction is formed on both surfaces at a substantially central portion of the elastic partition film 8, and the thin plate member 81 As shown in FIG. 3 (b), only the peripheral edge is embedded in the elastic partition membrane 8. Further, the outermost peripheral edge of the thin plate member 13 is located at a boundary portion between a first rubber portion 8c and a second rubber portion 8d described later.
  • the elastic partition membrane 8 has a rubber film portion 8b formed with a substantially constant thickness, and is positioned radially outward from the rubber film portion 8b. From the first rubber part 8c, which is formed into a thinner tapered shape toward the radially outer side (that is, constricted in the axial center O direction (Fig. 3 (b) vertical direction)) and the first rubber part 8c And a second rubber part 8d formed higher than the first rubber part 8c by the rising force S in the axial center O direction. Has been. Both end portions of the second rubber portion 8d are formed to be curved in a circular arc shape that is convex in the tip direction (upward or downward in FIG. 3 (b)).
  • the first and second rubber portions 8c, 8d are pressed in the direction of the axis O (the vertical direction in FIG. 2 (b)) by the upper and lower clamping members 9, 10 ( In the assembled state of the partition means 7, pre-compression in the direction of the axis O is applied to the first and second rubber parts 8c, 8d. (See Figure 6).
  • pre-compression is applied only to a part of the first rubber part 8c (a part on the radially outer side) (see FIG. 7), but the first rubber part 8c
  • the thickness of the first rubber portion and the height of the first staggered surface portions 9a and 10a may be set so that pre-compression is applied to the whole.
  • FIG. 4 (a) is a top view of the upper clamping member 9
  • FIG. 4 (b) is a sectional view of the upper clamping member 9 taken along the line IVb-IVb of FIG. 4 (a).
  • the upper clamping member 9 is formed in a substantially cylindrical shape with a metal material force such as an aluminum alloy, and is integrated with the lower clamping member 10 by press-fitting means.
  • the partitioning means 7 is configured while sandwiching and fixing the peripheral portion of the elastic partition film 8 together with the lower sandwiching member 10 (see FIG. 6).
  • a first staggered surface portion 9a that presses the first rubber portion 8c of the elastic partition film 8 is provided.
  • a second stopper surface portion 9b that is located radially outward from the first staggered surface portion 9a and is retreated (recessed) in the axial direction from the first staggered surface portion 9a. Formed around Zhou! RU
  • both the radially inner and outer ends of the first staggered surface portion 9a are formed to be curved in a circular arc shape, while the second staggered surface portion 9b is
  • the end portion on the radially inner side is formed in an arc shape in cross section, and the end portion on the radially outer side is formed in a straight line (see FIG. 7).
  • the press-fit surface portion 9c is a portion into which the press-fit surface portion 10c (see Fig. 5) of the lower holding member 10 is externally fitted. It is connected to the second stopper surface portion 9b.
  • the overhanging wall 9d is an orifice forming wall for forming the orifice 20 (see FIG. 1), and is formed to protrude outward in the radial direction.
  • a cutout portion 9dl that is substantially U-shaped in top view is cut out in a part of the protruding wall 9d in the circumferential direction.
  • This notch 9dl is an orifice inlet / outlet for communicating the orifice 20 with the second liquid chamber 6B (see FIG. 1).
  • FIG. 5 (a) is a top view of the lower holding member 10
  • FIG. 5 (b) is a cross-sectional view of the lower holding member 10 taken along the line Vb-Vb in FIG. 5 (a).
  • the lower clamping member 10 is also formed in a substantially cylindrical shape with a metal material force such as an aluminum alloy, and is integrally joined with the upper clamping member 9 described above by press-fitting means.
  • the cutting means 7 is configured while holding and fixing the peripheral portion of the elastic partition film 8 together with the upper holding member 9 (see FIG. 6).
  • a protruding portion is formed to protrude radially inward at the lower end on the inner peripheral side of this lower clamping member 10 (lower side in Fig. 5 (b)).
  • the overhanging portion is located on the radially outward side of the first strobe surface portion 10a that presses the first rubber portion 8c of the elastic partition membrane 8 and the first strobe surface portion 10a, and
  • a second staggered surface portion 10b formed (recessed) is formed so as to recede in the axial direction from the first staggered surface portion 10a.
  • both the radially inner and outer ends of the first and second stopper surface portions 10a and 10b are curved in a circular arc shape in cross section ( (See Figure 7.)
  • the lower clamping member 10 is provided with a press-fitting surface portion 10c on the inner peripheral side thereof, and an overhanging wall 9d provided on the entire outer peripheral side. .
  • the press-fit surface portion 10c is a portion that is externally press-fitted into the press-fit surface portion 9c (see FIG. 4) of the upper clamping member 9, and is connected to the second staggered surface portion 10b.
  • the projecting wall 10 d is an orifice forming wall for forming the orifice 20 (see FIG. 1) together with the projecting wall 9 d described above, and is formed so as to project outward in the radial direction.
  • a cutout portion 10dl that is substantially U-shaped in top view is cut out in a part of the projecting wall 10d in the circumferential direction. This notch 10dl connects the orifice 20 to the first This is the orifice inlet / outlet for communicating with the liquid chamber 6A.
  • a vertical wall 10e is erected on a part of the outer circumferential portion of the lower holding member 10 in the circumferential direction.
  • the vertical wall 10e is a wall portion for dividing the orifice 20 (see FIG. 1) in the circumferential direction, and the partition means 7 is configured to cut the upper and lower clamping members 9, 10 in the circumferential direction. It is assembled so that it is located between the notches 9dl and 10dl (see Fig. 6).
  • FIG. 6 (a) is a top view of the partition means 7
  • FIG. 6 (b) is a cross-sectional view of the partition means 7 along the VIb-VIb line of FIG. 6 (a).
  • FIG. 7 is a partially enlarged sectional view of the partition means 7.
  • the assembly of the partition means 7 is performed outside the liquid tank.
  • the elastic partition film 8 is clamped from both sides in the direction of the axis O by the upper and lower clamping members 9 and 10.
  • the upper clamping member 9 is further pushed in the direction of the axis O toward the lower clamping member 10, so that the press-fitting surface portion 10 c of the lower clamping member 10 is press-fitted into the press-fitting surface portion 9 c of the upper clamping member 9.
  • the partition means 7 is integrally constituted by the plurality of members 8-10.
  • the integrated partition means 7 is immersed in the liquid tank and inserted into the second mounting bracket 2 in the liquid tank.
  • the first and second rubber portions 8c, 8d of the elastic partition membrane 8 are formed by the first and second stopper surface portions 9a, 9b, 10a, 10b of the upper and lower holding member members 9, 10.
  • a pressing force in the direction of the axis O acts and pre-compression is applied.
  • the first and second rubber portions 13c, 13d are filled in the space surrounded by the first and second stopper surface portions 14a-15b.
  • the first rubber portion 8c is preliminarily compressed only on a part (outer side in the radial direction).
  • the outer peripheral edge of the thin plate member 81 is from the end surfaces on the radially inner side of the upper and lower clamping members 9, 10. Is also configured to be located radially outward. Therefore, when the partition means 7 is viewed in the axial direction, the outer peripheral edge of the thin plate member 13 overlaps with the upper and lower clamping members 9 and 10.
  • a gap is formed between the first rubber portion 8c and the first stopper surface portions 9a, 10a on the radially inner side (right side in FIG. 7). .
  • This facilitates the reciprocating deformation of the elastic partition membrane 8 and provides a low dynamic spring characteristic when relatively small amplitude vibration is input. Improvements are being made.
  • the inner peripheral portion of the engine side bracket B2 is formed in a linear cross section, but the engine side bracket B12 of the second embodiment has a contact portion B12b formed on the inner peripheral portion thereof.
  • the same parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
  • FIG. 8 is a cross-sectional view of the liquid-filled vibration isolator 100 and corresponds to the cross-sectional view taken along the line II-II in FIG. 1 (a).
  • a contact portion B12b is formed on the inner peripheral portion of the engine side bracket B12 so as to protrude radially inward. Therefore, when the second mounting bracket 2 is press-fitted into the inner peripheral portion of the engine side bracket B12, positioning in the press-fitting direction can be performed by bringing the stepped portion into contact with the contact portion B12b.
  • the large-diameter cylindrical portion 2a is positioned closer to the first mounting bracket 1 than the small-diameter cylindrical portion 2b.
  • the step portion is located on the first mounting bracket 1 side with respect to the contact portion B 12b of the engine side bracket B12.
  • FIG. 9 is a cross-sectional view of the liquid-filled vibration isolator 200, and is a cross-sectional view taken along line II-II in FIG. 1 (a).
  • Corresponding to 10 (a) is an exploded sectional view of the partitioning means 17, and FIG. 10 (b) is a sectional view of the cutting means 17.
  • the upper and lower clamping members 19, 110 in the third embodiment are configured in a substantially annular shape having an axis O such as a thermoplastic resin material, and as shown in FIG. , Elastic partition membrane
  • the joint surfaces are welded to each other by the welding means in a state where the peripheral edge of 8 is sandwiched.
  • the partitioning means 17 is integrated into one piece (see FIG. 10 (b)).
  • the upper clamping member 19 is provided with a projecting portion 19e on the outer side in the radial direction of the second staggered surface portion 9b.
  • a recessed portion 110e is recessed over the entire circumference on the radially outer side of the second stopper surface portion 10b.
  • the projecting portion 19e and the recessed portion 110e are configured to be fitted in the axial direction, and contact surfaces thereof (the outer surface of the projecting portion 19e and the inner surface of the recessed portion 110e). Is the joint surface that is welded by the welding means.
  • the convex portion 19e has a top portion 19el and a concave portion 110e has a bottom portion lOel in contact with each other.
  • the height of the projecting portion 19e and the depth of the recessed portion 110e are set, and the contact portions (the bottom portion 14el and the top portion 15cl) are mainly welded by the welding means.
  • examples of the welding means include known techniques such as an ultrasonic welding method and a laser welding method.
  • the ultrasonic welding method pressure and ultrasonic vibration are applied to the joint surfaces of the upper and lower clamping members 19, 110 (that is, the top 19el of the convex portion 19e and the bottom l lOel of the concave portion 110e), and the friction between them.
  • the resin material on the joining surface is melted and joined by heat.
  • the upper holding member 19 is made of a light-transmitting thermoplastic resin material
  • the lower holding member 110 is made of a light-absorbing thermoplastic resin material
  • the welding of the joining surface by the welding means is partially performed in the circumferential direction (for example, 9 mm in the circumferential direction). It may be performed at four power points at intervals of 0 °, or may be performed all around the circumferential direction. If it is performed partially, the welding cost can be reduced. On the other hand, if it is performed all around, the reliability of the bonding strength can be ensured.
  • the liquid-filled vibration isolator 100, 200 provided between the engine EG of the automobile and the vehicle body frame BF is taken as an example.
  • the present invention can be applied to other liquid-sealed vibration isolator other than the above.
  • the present invention may be applied to a liquid-filled vibration isolator provided between a transmission (vibration generator) and a body frame.
  • the large-diameter cylindrical portion 2a of the second mounting bracket 2 is press-fitted into the inner peripheral portion of the engine-side bracket B2
  • the present invention is not necessarily limited thereto.
  • the small-diameter cylindrical portion 2b of the second mounting bracket 2 may be configured to be press-fitted into the inner peripheral portion of the engine side bracket B2.
  • the stepped portion of the second mounting bracket 2 can be brought into contact with the opening of the engine side bracket B2, so that the above-described contact portion B12b is provided. In the same manner as described above, it is possible to obtain an effect of positioning at the time of internal press-fitting and preventing the press-fitted portion from coming off.
  • the liquid-filled vibration isolator 200 has an inner peripheral portion formed in a straight line, similar to the liquid-filled vibration isolator 100 in the first embodiment. Force explained for press-fitting into engine-side bracket B2 As in the case of the second embodiment, which is not necessarily limited to this, a liquid-filled type prevention is applied to the engine-side bracket B12 having the contact portion B12b. Of course, it is possible to press-fit and configure the vibration device 200.
  • the inner peripheral surface of the body frame side bracket B1 (the inner peripheral surface of the accommodation space of the liquid-filled vibration isolator 100, 200) and the engine side bracket B
  • a rubber elastic body is attached to the outer peripheral surface of 2 by vulcanization adhesion, etc., to enable displacement regulation, so that a stubbing action at the time of large displacement input can be obtained.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

A liquid-sealed vibration damping device capable of sufficiently reducing the occurrence of abnormal noise while securing low dynamic spring characteristics in inputting vibration with rather small amplitude and high damping characteristics in inputting vibration with rather large amplitude and a liquid-sealed vibration damping device unit. A first mounting fitting (1) is formed as a vehicle body frame side connection means connected to a vehicle body frame (BF) side, and a second mounting fitting (2) is formed as a vibration generating body side connection means connected to an engine EG (vibration generating body) side. A part of a vibration transmission passage from a partition means (7) to a vehicle body frame (BF) is formed of a vibration damping base (3). Thus, even if an elastic partition membrane (8) is collided with an upper holding member (9) or a lower holding member (10) at the partition means (7) and the upper or lower holding member (9) or (10) is vibrated, the transmission of the vibration to the vehicle body frame (BF) is securely suppressed by the vibration isolating effect of the vibration damping base (3) forming the part of the vibration transmission passage. As a result, the occurrence of the abnormal noise can be remarkably reduced.

Description

明 細 書  Specification
液封入式防振装置及び液封入式防振装置ユニット  Liquid filled vibration isolator and liquid filled vibration isolator unit
技術分野  Technical field
[0001] 本発明は、液封入式防振装置及び液封入式防振装置ユニットに関し、特に、比較 的小振幅の振動入力時の低動ばね特性と、比較的大振幅入力時の高減衰特性とを 確保しつつ、異音の発生を十分に低減することができる液封入式防振装置及び液封 入式防振装置ユニットに関するものである。  TECHNICAL FIELD [0001] The present invention relates to a liquid-filled vibration isolator and a liquid-filled vibration isolator unit, and in particular, a low dynamic spring characteristic when a relatively small amplitude vibration is input and a high damping characteristic when a relatively large amplitude is input. The present invention relates to a liquid-filled vibration isolator and a liquid-sealed vibration isolator unit that can sufficiently reduce the occurrence of abnormal noise.
背景技術  Background art
[0002] 自動車のエンジンやトランスミッションなどの振動発生体を支持固定しつつ、その振 動を車体フレームへ伝達させないようにする防振装置として、液封入式防振装置が 知られている。  A liquid-filled vibration isolator is known as an anti-vibration device that supports and fixes a vibration generating body such as an automobile engine or transmission while preventing the vibration from being transmitted to a vehicle body frame.
[0003] この液封入式防振装置は、一般に、エンジン側に取り付けられる第 1取付け具と、 車体フレーム側に取り付けられる第 2取付け具とが、ゴム状弾性体力 構成される防 振基体で連結される。そして、第 2取付け具に取付けられたダイヤフラムにより、その ダイヤフラムと防振基体との間に液封入室が形成される。  [0003] In this liquid-filled vibration isolator, generally, a first attachment attached to the engine side and a second attachment attached to the body frame side are connected by an anti-vibration base composed of a rubbery elastic body force. Is done. And the liquid enclosure chamber is formed between the diaphragm and the vibration isolating base by the diaphragm attached to the second fixture.
[0004] 液封入室は、仕切り手段によって第 1液室および第 2液室の 2室に仕切られ、これら 第 1及び第 2液室は、オリフィスによって互いに連通される。この液封入式防振装置 によれば、オリフィスによる第 1及び第 2液室間の流体流動効果や防振基体の制振効 果により、振動減衰機能と振動絶縁機能とを果す。  [0004] The liquid sealing chamber is partitioned into two chambers, a first liquid chamber and a second liquid chamber, by a partitioning means, and the first and second liquid chambers communicate with each other by an orifice. According to this liquid-filled vibration isolator, the vibration damping function and the vibration insulation function are achieved by the fluid flow effect between the first and second liquid chambers by the orifice and the vibration damping effect of the vibration isolating substrate.
[0005] ここで、仕切り手段が、弾性仕切り膜と、その弾性仕切り膜の変位量をその両側力 規制する一対の変位規制部材とを備えて構成されている液封入式防振装置がある。  [0005] Here, there is a liquid filled type vibration damping device in which the partitioning unit includes an elastic partition film and a pair of displacement restricting members that restrict the displacement amount of the elastic partition film.
[0006] この種の液封入式防振装置によれば、比較的小振幅の振動が入力される場合に は、弾性仕切り膜が往復動変位することで、両液室間の液圧変動を吸収して、低動 ばね特性を得ることができる。一方、例えば、走行路面の凹凸などに起因して、比較 的大振幅の振動が入力される場合には、弾性仕切り膜の変位量を変位規制部材で 両側から規制して膜剛性を高めることで、流体がオリフィスを介して両液室間で流動 し易くして、高減衰特性を得ることができる。 [0007] し力しながら、この種の液封入式防振装置では、弾性仕切り膜を変位規制部材に 衝突(当接)させる構造であるため、その衝突の際に変位規制部材が振動し、その振 動が車体フレームへ伝達されることで、異音が発生するという問題点があった。 [0006] According to this type of liquid-filled vibration isolator, when a relatively small amplitude vibration is input, the elastic partition membrane is reciprocally displaced, so that the fluid pressure fluctuation between the two fluid chambers is reduced. By absorbing it, low dynamic spring characteristics can be obtained. On the other hand, for example, when relatively large-amplitude vibration is input due to unevenness on the road surface, etc., the displacement amount of the elastic partition film is regulated from both sides by a displacement regulating member to increase the membrane rigidity. The fluid can easily flow between the two liquid chambers through the orifice, so that a high attenuation characteristic can be obtained. [0007] However, since this type of liquid-filled vibration isolator has a structure in which the elastic partition membrane collides (contacts) with the displacement regulating member, the displacement regulating member vibrates at the time of the collision, There was a problem that abnormal noise was generated by transmitting the vibration to the body frame.
[0008] この問題点に対しては、例えば、膜厚の厚肉化やゴム硬度の高硬度化により、弾性 仕切り膜の膜剛性を高め、弾性仕切り膜が往復動変位し難くすることで、変位規制部 材との衝突を回避して、異音の発生を抑制することができるが、この場合には、弾性 仕切り膜が両液室間の液圧変動に追従変形し難くなるため、その液圧変動の吸収が 困難となり、低動ばね特性が得られなくなる。  [0008] To solve this problem, for example, by increasing the film rigidity of the elastic partition film by increasing the thickness of the film or increasing the hardness of the rubber, the elastic partition film is less likely to be reciprocally displaced. It is possible to avoid the occurrence of abnormal noise by avoiding collision with the displacement regulating member, but in this case, the elastic partition membrane is difficult to deform following the hydraulic pressure fluctuation between the two liquid chambers. Absorption of fluid pressure fluctuations becomes difficult and low dynamic spring characteristics cannot be obtained.
[0009] そこで、従来は、例えば、特開平 6— 221368号公報に開示されているように、変位 規制部材に放射状のリブを設けることで、弾性仕切り膜と変位規制部材との接触面 積を小さくして、異音の発生を抑制して!/、た (特許文献 1)。  Therefore, conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 6-221368, a radial rib is provided on the displacement regulating member, thereby reducing the contact area between the elastic partition film and the displacement regulating member. Reduce the noise to suppress the generation of abnormal noise! (Patent Document 1).
特許文献 1:特開平 6— 221368号(図 4など)  Patent Document 1: JP-A-6-221368 (Fig. 4 etc.)
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0010] し力しながら、上述した従来の構成では、弾性仕切り膜と変位規制部材との衝突に 起因して発生する異音を十分低減することができな 、と 、う問題点があった。 [0010] However, the conventional configuration described above has a problem in that the abnormal noise generated due to the collision between the elastic partition film and the displacement regulating member cannot be sufficiently reduced. .
[0011] 本発明は上述した問題点を解決するためになされたものであり、比較的小振幅の 振動入力時の低動ばね特性と比較的大振幅入力時の高減衰特性とを確保しつつ、 異音の発生を十分に低減することができる液封入式防振装置及び液封入式防振装 置ユニットを提供することを目的として 、る。 課題を解決するための手段 [0011] The present invention has been made to solve the above-described problems, while ensuring a low dynamic spring characteristic at the time of relatively small amplitude vibration input and a high damping characteristic at the time of relatively large amplitude input. An object of the present invention is to provide a liquid-filled vibration isolator and a liquid-filled vibration isolator unit that can sufficiently reduce the occurrence of abnormal noise. Means for solving the problem
[0012] この目的を達成するために、請求の範囲第 1項記載の液封入式防振装置は、第 1 取付け具と、筒状の第 2取付け具と、その第 2取付け具と前記第 1取付け具とを連結 し、ゴム状弾性材から構成される防振基体と、前記第 2取付け具に取付けられて前記 防振基体との間に液体封入室を形成するダイヤフラムと、前記液体封入室を前記防 振基体側の第 1液室と前記ダイヤフラム側の第 2液室とに仕切る仕切り手段と、その 仕切り手段の外周面と前記第 2取付け具の内周面との間に形成され、前記第 1液室 と第 2液室とを連通させるオリフィスとを備えるものであり、前記仕切り手段は、ゴム状 弾性材カゝら構成される弾性仕切り膜と、その弾性仕切り膜内に埋設され金属材料か ら略薄板状に構成される薄板部材と、前記弾性仕切り膜をその軸心方向で挟持固定 する挟持部材とを備え、前記弾性仕切り膜は、その径方向外方側ほど薄肉のテーパ 一状に構成される第 1ゴム部と、その第 1ゴム部よりも径方向外方側に位置すると共 に軸心方向に立ち上がる第 2ゴム部とを備え、前記一対の挟持部材は、前記弾性仕 切り膜の第 1ゴム部を受け止め可能な第 1ストツバ面部と、その第 1ストツバ面部よりも 軸心方向に後退して位置すると共に前記弾性仕切り膜の第 2ゴム部を受け止め可能 な第 2ストツバ面部とを備え、前記薄板部材は、その外周縁が前記一対の挟持部材 の径方向内方側の端面よりも径方向外方側に位置し、前記第 1取付け具を車体フレ ーム側に連結される車体フレーム側連結手段として構成すると共に、前記第 2取付け 具を振動発生体側に連結される振動発生体側連結手段として構成することで、前記 仕切り手段から前記車体フレームまでの振動伝達経路の一部が前記防振基体によ つて構成されている。 In order to achieve this object, the liquid-filled vibration isolator according to claim 1 includes a first mounting tool, a cylindrical second mounting tool, the second mounting tool, and the second mounting tool. 1. A vibration isolating base made of a rubber-like elastic material connected to a fixture, a diaphragm attached to the second fixture to form a liquid enclosure between the vibration isolating base, and the liquid sealed Partition means for partitioning the chamber into a first liquid chamber on the vibration isolation base side and a second liquid chamber on the diaphragm side, and formed between an outer peripheral surface of the partition means and an inner peripheral surface of the second fixture. And an orifice for communicating the first liquid chamber and the second liquid chamber, and the partition means is rubber-like An elastic partition membrane composed of an elastic material cover, a thin plate member embedded in the elastic partition membrane and configured in a substantially thin plate shape from a metal material, and sandwiching and fixing the elastic partition membrane in the axial direction And the elastic partition membrane is located at a radially outer side of the first rubber portion, and a first rubber portion configured to have a thin taper shape toward the radially outer side. A second rubber portion rising in the axial direction, and the pair of clamping members includes a first stubber surface portion capable of receiving the first rubber portion of the elastic cut film, and the axial direction of the first stubber surface portion. The thin rubber member has an outer peripheral edge which is an end surface on the radially inner side of the pair of sandwiching members. Located on the radially outer side than the first fixture The vehicle body frame side connection means connected to the vehicle body frame side, and the second fixture is configured as a vibration generator side connection means connected to the vibration generator side. A part of the vibration transmission path up to this point is constituted by the vibration-proof base.
[0013] 請求の範囲第 2項記載の液封入式防振装置は、請求の範囲第 1項記載の液封入 式防振装置において、前記一対の挟持部材の第 1ストツバ面部は、前記仕切り手段 の径方向内方側の端部が断面円弧状に湾曲して形成されて!、る。  [0013] The liquid-filled vibration isolator according to claim 2 is the liquid-filled vibration isolator according to claim 1, wherein the first staggered surface portion of the pair of clamping members is the partition means. The end portion on the inner side in the radial direction is curved in a circular arc shape.
[0014] 請求の範囲第 3項記載の液封入式防振装置は、請求の範囲第 1又は第 2項に記載 の液封入式防振装置において、前記弾性仕切り膜は、略中心部に開口部が開口形 成されており、前記薄板部材の周縁部のみが前記弾性仕切り膜内に埋設されるよう に構成されている。  [0014] The liquid-filled vibration isolator according to claim 3 is the liquid-filled vibration isolator according to claim 1 or 2, wherein the elastic partition film is opened at a substantially central portion. The opening is formed, and only the peripheral edge of the thin plate member is embedded in the elastic partition membrane.
[0015] 請求の範囲第 4項記載の液封入式防振装置は、請求の範囲第 1から第 3項のいず れかに記載の液封入式防振装置において、前記仕切り手段の組み立て状態におい ては、前記一対の挟持部材の第 2ストツバ面部が前記弾性仕切り膜の第 2ゴム部を前 記仕切り手段の軸心方向へ押圧することで、その弾性仕切り膜の第 2ゴム部に予圧 縮が付与されるように構成されて ヽる。  [0015] The liquid-filled vibration isolator according to claim 4 is the liquid-filled vibration isolator according to any one of claims 1 to 3, wherein the partition means is assembled. In this case, the second stubber surface portion of the pair of clamping members presses the second rubber portion of the elastic partition membrane in the axial direction of the partition means, thereby preloading the second rubber portion of the elastic partition membrane. It is configured to be contracted.
[0016] 請求の範囲第 5項記載の液封入式防振装置は、請求の範囲第 1から第 4項のいず れかに記載の液封入式防振装置にお!、て、前記一対の挟持部材を熱可塑性の榭 脂材料から構成し、互いの接合面を溶着手段により溶着することで、前記仕切り手段 がー体的に構成されている。 [0016] The liquid-filled vibration isolator according to claim 5 is the liquid-filled vibration isolator according to any one of claims 1 to 4; The sandwiching member is made of a thermoplastic resin material, and the partitioning means is welded to each other by a welding means. It is structured physically.
[0017] 請求の範囲第 6項記載の液封入式防振装置は、請求の範囲第 5項記載の液封入 式防振装置において、前記一対の挟持部材は、一方の接合面から突設される凸設 部と、他方の接合面に凹設され前記凸設部を受け入れ可能な凹設部とを備え、前記 仕切り手段の軸心方向で嵌合可能に構成されると共に、それら凸設部と凹設部とは 、前記仕切り手段の み立て状態において、前記凸設部の頂部と前記凹設部の底 部とが当接するように凸設高さと凹設深さとがそれぞれ設定されている。  [0017] The liquid-filled vibration isolator according to claim 6 is the liquid-filled vibration isolator according to claim 5, wherein the pair of clamping members protrude from one joint surface. And a concave portion that is recessed in the other joint surface and can receive the convex portion, and is configured to be fitted in the axial direction of the partition means, and the convex portions And the recessed portion are set such that the height of the projecting portion and the depth of the recessed portion are set so that the top portion of the projecting portion and the bottom portion of the recessed portion come into contact with each other when the partition means is in the standing state. .
[0018] 請求の範囲第 7項記載の液封入式防振装置ユニットは、請求の範囲第 1から第 6項 の!、ずれかに記載の液封入式防振装置と、その液封入式防振装置を前記振動発生 体側に連結する振動発生体側ブラケットとを備えたものであり、前記第 2取付け具は 、小径筒部と、その小径筒部よりも大径に形成される大径筒部と、その大径筒部と前 記小径筒部とを連結する段差部とを備えると共に、前記大径筒部が前記振動発生体 側ブラケットの内周部へ内嵌圧入されるものであり、前記振動発生体側ブラケットの 内周部には、その内周部に内嵌圧入された前記第 2取付け具の段差部に当接可能 な当接部が径方向内方側に張り出して形成されて 、る。  [0018] The liquid-filled vibration isolator unit according to claim 7 includes a liquid-filled vibration-proof device according to any one of claims 1 to 6 and a liquid-filled vibration-proof device. A vibration generator side bracket for connecting a vibration device to the vibration generator side, and the second attachment includes a small diameter cylindrical portion and a large diameter cylindrical portion formed to have a larger diameter than the small diameter cylindrical portion. And a stepped portion connecting the large-diameter cylindrical portion and the small-diameter cylindrical portion, and the large-diameter cylindrical portion is press-fitted into the inner peripheral portion of the vibration generator side bracket, On the inner peripheral portion of the vibration generator side bracket, an abutting portion capable of abutting on a stepped portion of the second fixture fitted and fitted into the inner peripheral portion is formed to project radially inward. RU
[0019] 請求の範囲第 8項記載の液封入式防振装置ユニットは、請求の範囲第 7項記載の 液封入式防振装置ユニットにおいて、前記第 2取付け具は、前記大径筒部が前記小 径筒部よりも前記第 1取付け具側に位置すると共に、その大径筒部を前記振動発生 体側ブラケットの内周部に内嵌圧入するものであり、その内嵌圧入状態では、前記第 2取付け具の段差部が前記振動発生体側ブラケットの当接部よりも前記第 1取付け 具側に位置するように構成されて 、る。  [0019] The liquid-filled vibration isolator unit according to claim 8 is the liquid-filled vibration isolator unit according to claim 7, wherein the second fitting has the large-diameter cylindrical portion. It is located closer to the first fixture than the small-diameter cylindrical portion, and the large-diameter cylindrical portion is press-fitted into the inner peripheral portion of the vibration generator-side bracket. The step portion of the second fixture is configured to be positioned closer to the first fixture than the contact portion of the vibration generator side bracket.
発明の効果  The invention's effect
[0020] 請求の範囲第 1項記載の液封入式防振装置によれば、金属材料から略薄板状に 構成される薄板部材を弾性仕切り膜内に埋設したので、比較的小振幅の振動入力 時の低動ばね特性と比較的大振幅の振動入力時の高減衰特性とを確保しつつ、異 音の発生を低減することができるという効果がある。  [0020] According to the liquid-filled vibration isolator according to claim 1, since the thin plate member made of a metal material and having a substantially thin plate shape is embedded in the elastic partition film, vibration input with a relatively small amplitude is provided. It is possible to reduce the generation of abnormal noise while ensuring the low dynamic spring characteristics at the time and the high damping characteristics at the time of relatively large amplitude vibration input.
[0021] 即ち、比較的大振幅の振動の入力に伴って弾性仕切り膜が変位する場合には、金 属材料カゝら構成される薄板部材が弾性仕切り膜の剛性を補強して、弾性仕切り膜全 体としての変形を規制することができる。よって、液体をオリフィスへ円滑に流動させ ることができるので、流体流動効果を十分に発揮させ、高減衰特性を得ることができ る。 That is, when the elastic partition membrane is displaced with the input of a relatively large amplitude vibration, the thin plate member constituted by the metal material member reinforces the rigidity of the elastic partition membrane and Whole membrane Deformation as a body can be regulated. Therefore, since the liquid can smoothly flow to the orifice, the fluid flow effect can be sufficiently exerted and high attenuation characteristics can be obtained.
[0022] その結果、従来の液封入式防振装置のように、弾性仕切り膜の変位を規制して膜 剛性を高めるための変位規制部材を設ける必要がな 、ので、その変位規制部材と弹 性仕切り膜との当接 (衝突)に起因する異音の発生を回避することができる。  As a result, there is no need to provide a displacement restricting member for restricting the displacement of the elastic partition membrane and increasing the membrane rigidity as in the conventional liquid-filled vibration isolator, so that the displacement restricting member The generation of abnormal noise due to contact (collision) with the sex partition film can be avoided.
[0023] 更に、薄板部材の外周縁が挟持部材の径方向内方側の端面よりも径方向外方側 に位置するように構成したので、仕切り手段の軸方向視において薄板部材の外周縁 と一対の挟持部材とを重合させることができる。その結果、弾性仕切り膜の往復動変 位をより規制し易くすることができるので、比較的大振幅の振動が入力される場合の 高減衰特性をより確実に得ることができる。  [0023] Furthermore, since the outer peripheral edge of the thin plate member is located on the radially outer side of the end surface on the radially inner side of the clamping member, the outer peripheral edge of the thin plate member in the axial direction of the partition means A pair of clamping members can be polymerized. As a result, the reciprocating displacement of the elastic partition membrane can be more easily regulated, so that high damping characteristics can be obtained more reliably when a relatively large amplitude vibration is input.
[0024] 一方、比較的小振幅の振動が入力される場合には、弾性仕切り膜が往復動変位す ることで、第 1及び第 2液室間の液圧差を吸収して、低動ばね特性を得ることができる  On the other hand, when vibration with a relatively small amplitude is input, the elastic partition membrane is reciprocally displaced to absorb the hydraulic pressure difference between the first and second liquid chambers, thereby reducing the low dynamic spring. Can get the characteristics
[0025] ここで、従来の液封入式防振装置では、弾性仕切り膜へ第 1又は第 2液室の液圧を 伝えるための開口面積が変位規制部材の分だけ狭くなるため、液圧差を吸収し難く なり、その分、低動ばね特性が得に《なるという問題点があった。これに対し、本発 明の液封入式防振装置によれば、変位規制部材を設ける必要がなぐ開口面積の 大幅な拡大が可能となるので、前記液圧差をより高効率に吸収することができ、その 分、低動ばね特性を確実に得ることができる。 [0025] Here, in the conventional liquid-filled vibration isolator, the opening area for transmitting the hydraulic pressure of the first or second liquid chamber to the elastic partition membrane is narrowed by the amount of the displacement regulating member, so that the hydraulic pressure difference is reduced. There is a problem that it becomes difficult to absorb, and the low dynamic spring characteristics are obtained accordingly. On the other hand, according to the liquid-filled vibration isolator of the present invention, it is possible to greatly expand the opening area without the need to provide a displacement restricting member, so that the liquid pressure difference can be absorbed more efficiently. Therefore, the low dynamic spring characteristics can be obtained with certainty.
[0026] 更に、弾性仕切り膜の第 1ゴム部を径方向外方側ほど薄肉となるテーパー状に形 成したので、かかるテーパー形状の作用により、弾性仕切り膜の往復動変位をより行 い易くすることができ、その分、比較的小振幅の振動が入力される場合のばね特性 の更なる低動ばね化を得ることができる。  [0026] Further, since the first rubber portion of the elastic partition membrane is formed in a taper shape that becomes thinner toward the outer side in the radial direction, the action of the taper shape makes it easier to reciprocate the elastic partition membrane. As a result, the spring characteristics can be further lowered when the vibration having a relatively small amplitude is input.
[0027] そして、本発明の液封入式防振装置によれば、第 1取付け具を車体フレーム側に 連結される車体フレーム側連結手段として構成すると共に、第 2取付け具を振動発生 体側に連結される振動発生体側連結手段として構成したので、仕切り手段 (弾性仕 切り膜及び挟持部材)から車体フレームまでの振動伝達経路の一部を防振基体によ つて構成することができる。 [0027] According to the liquid-filled type vibration isolator of the present invention, the first attachment is configured as vehicle body frame-side connection means connected to the vehicle body frame, and the second attachment is connected to the vibration generator. The vibration generating body side connecting means is configured so that a part of the vibration transmission path from the partitioning means (the elastic cutting film and the clamping member) to the vehicle body frame is formed by the vibration isolating base. Can be configured.
[0028] その結果、例えば、弾性仕切り膜 (第 1ゴム部)と挟持部材 (第 1ストツバ面)との接触 に起因して、挟持部材が振動したとしても、その振動が車体フレームへ伝達されるこ とを、振動伝達経路の一部を構成する防振基体の振動絶縁効果により、確実に抑制 して、異音の発生を十分に低減することができるという効果がある。  As a result, for example, even if the clamping member vibrates due to the contact between the elastic partition film (first rubber part) and the clamping member (first staggered surface), the vibration is transmitted to the vehicle body frame. There is an effect that the occurrence of abnormal noise can be sufficiently reduced by reliably suppressing the vibration by the vibration insulation effect of the vibration-proof base constituting a part of the vibration transmission path.
[0029] 請求の範囲第 2項記載の液封入式防振装置によれば、請求の範囲第 1項記載の 液封入式防振装置の奏する効果に加え、第 1ストツバ面は、仕切り手段の径方向内 方側の端部が断面円弧状に湾曲して構成されているので、その断面円弧状形状の 作用により、弾性仕切り膜の往復動変位をし易くして、比較的小振幅の振動が入力さ れる場合の低動ばね特性の向上を図りつつ、第 1ストツバ面の端部との接触による第 1ゴム部の摩耗や損傷を抑制して、弾性仕切り膜全体としての耐久性の向上を図るこ とができるという効果がある。  [0029] According to the liquid-filled vibration isolator according to claim 2, in addition to the effects exhibited by the liquid-filled vibration isolator according to claim 1, the first staggered surface is formed of partition means. Since the radially inner end is curved in a circular arc shape, the action of the circular arc shape in the cross section facilitates the reciprocating displacement of the elastic partition film, and vibration with a relatively small amplitude. While improving the low dynamic spring characteristics when the is input, the wear and damage of the first rubber part due to contact with the end of the first staggered surface is suppressed, and the durability of the elastic partition membrane as a whole is improved. There is an effect that can be achieved.
[0030] 請求の範囲第 3項記載の液封入式防振装置によれば、請求の範囲第 1又は第 2項 に記載の液封入式防振装置の奏する効果に加え、弾性仕切り膜の略中心部に開口 部を開口形成し、薄板部材の周縁部のみが前記弾性仕切り膜内に埋設されるように 構成したので、開口部の開口分だけゴム状弾性体の使用量を低減して、その分、材 料コストの削減を図ることができるという効果がある。  [0030] According to the liquid-filled vibration isolator according to claim 3, in addition to the effect of the liquid-filled vibration isolator according to claim 1 or 2, Since the opening is formed at the center and only the peripheral edge of the thin plate member is embedded in the elastic partition film, the amount of rubber-like elastic body used is reduced by the opening of the opening, This has the effect of reducing material costs.
[0031] なお、このようなゴム状弾性体の使用量の低減は、従来の弾性仕切り膜では採用 することが不可能 (即ち、膜厚を薄くすると膜剛性の減少により減衰特性の低下を招 く一方、ゴム硬度を高くして剛性を高めると、低動ばね特性が得られない)であり、本 発明のように、弾性仕切り膜に薄板部材を埋設することで初めて採用可能となったも のである。これにより材料コストの削減と軽量化、及び、動的特性 (低動ばね特性と高 減衰特性)の確保を同時に達成することができる。  [0031] It should be noted that such a reduction in the amount of rubber-like elastic material used cannot be employed with conventional elastic partition membranes (that is, when the film thickness is reduced, the damping characteristics are reduced due to the reduction in film rigidity). On the other hand, if the rubber hardness is increased and the rigidity is increased, the low dynamic spring characteristics cannot be obtained.) As in the present invention, it can be employed for the first time by embedding a thin plate member in the elastic partition film. It is. As a result, the material cost can be reduced, the weight can be reduced, and dynamic characteristics (low dynamic spring characteristics and high damping characteristics) can be achieved at the same time.
[0032] また、このように、弾性仕切り膜の略中心部に開口部を設けることで、かかる開口部 の開口面積を変更して、弾性仕切り膜全体としての剛性を適宜調整することができる という効果がある。その結果、所望の動的特性 (例えば、高減衰特性や低動ばね特 性)を得る為のチューニングを容易として、そのチューニングコストの低減を図ることが できるという効果がある。 [0033] 請求の範囲第 4項記載の液封入式防振装置によれば、請求の範囲第 1から第 3項 のいずれかに記載の液封入式防振装置の奏する効果に加え、仕切り手段の組み立 て状態においては、一対の挟持部材の第 2ストツバ面部が弾性仕切り膜の第 2ゴム部 を仕切り手段の軸心方向へ押圧して、その弾性仕切り膜の第 2ゴム部に予圧縮が付 与されるように構成したので、第 2ストツバ面部間に第 2ゴム部が充填され、これら第 2 ストツバ面部と第 2ゴム部との間に隙間が生じることを抑制することができるという効果 がある。 [0032] In addition, by providing the opening at the substantially central portion of the elastic partition membrane as described above, the opening area of the opening can be changed and the rigidity of the entire elastic partition membrane can be adjusted as appropriate. effective. As a result, it is possible to facilitate tuning for obtaining desired dynamic characteristics (for example, high damping characteristics and low dynamic spring characteristics), and to reduce the tuning cost. [0033] According to the liquid-filled vibration isolator according to claim 4, in addition to the effect exhibited by the liquid-filled vibration isolator according to any one of claims 1 to 3, the partition means In the assembled state, the second stopper surfaces of the pair of clamping members press the second rubber part of the elastic partition film in the axial direction of the partition means, and the second rubber part of the elastic partition film is pre-compressed. Since it is configured to be applied, the second rubber portion is filled between the second staggered surface portions, and the effect of suppressing the generation of a gap between the second stubber surface portion and the second rubber portion can be suppressed. There is.
[0034] その結果、空気溜まりの発生を抑制することができるので、動的な特性への悪影響  [0034] As a result, the occurrence of air pockets can be suppressed, which adversely affects dynamic characteristics.
(例えば、減衰特性の低下)を回避することができると共に、仕切り手段を液槽外で一 体化した後、その仕切り手段を液槽内で第 2取付け具の筒状胴部内に挿入して、液 封入式防振装置を組み立てることができるので、液槽内で複数の部品を第 2取付け 具内へ挿入する場合を比較して、組み立て性の向上を図ることができるという効果が ある。  (E.g., a reduction in attenuation characteristics) can be avoided, and after the partitioning means is integrated outside the liquid tank, the partitioning means is inserted into the cylindrical body of the second fixture in the liquid tank. Since the liquid-filled vibration isolator can be assembled, there is an effect that the assemblability can be improved as compared with the case where a plurality of parts are inserted into the second fixture in the liquid tank.
[0035] 請求の範囲第 5項記載の液封入式防振装置によれば、請求の範囲第 1から第 4項 の!、ずれかに記載の液封入式防振装置の奏する効果に加え、一対の挟持部材をそ れぞれ榭脂材料から構成したので、金属材料から構成する場合と比較して、仕切り 手段の大幅な軽量ィ匕を図ることができるという効果がある。  [0035] According to the liquid-filled vibration isolator according to claim 5, in addition to the effects of the liquid-filled vibration isolator according to claims 1 to 4 of the claims, Since each of the pair of sandwiching members is made of a resin material, there is an effect that the weight of the partition means can be significantly reduced as compared with the case where the pair of holding members is made of a metal material.
[0036] そして、それら一対の挟持部材の互いの接合面を溶着手段により溶着するように構 成したので、例えば、金属材料力も構成した部材を力しめ手段や溶接手段により一 体化する場合と比較して、製造設備の小型化や工程の簡素化、消費エネルギーの 削減などを図ることができるので、より迅速かつ低コストに一体ィ匕することができるとい う効果がある。  [0036] Since the joining surfaces of the pair of sandwiching members are configured to be welded by the welding means, for example, a member that also has a metal material force is integrated by the pressing means or the welding means. In comparison, the manufacturing equipment can be reduced in size, the process can be simplified, and the energy consumption can be reduced. Thus, there is an effect that the manufacturing equipment can be integrated more quickly and at a lower cost.
[0037] また、圧入手段により一体化する構成では、圧入部寸法公差の精密な管理が必要 となり、管理コストが嵩むところ、本発明のように、溶着手段により一体化する構成で あれば、前記管理コストの低減を図ることができると 、う効果がある。  [0037] In addition, in the configuration integrated by the press-fitting means, precise management of the press-fitting portion dimensional tolerance is required, and the management cost is increased. If the configuration is integrated by the welding means as in the present invention, If management costs can be reduced, there is an effect.
[0038] 請求の範囲第 6項記載の液封入式防振装置によれば、請求の範囲第 5項記載の 液封入式防振装置の奏する効果に加え、一対の挟持部材は、その接合面に凸設部 と凹設部とを備え、互いに仕切り手段の軸心方向で嵌合するように構成されて ヽるの で、挟持部材の互いの接合面を溶着手段により溶着する場合には、挟持部材を仮固 定した状態で溶着作業を行うことができ、その作業効率の向上を図ることができるとい う効果がある。また、軸心方向への嵌合により、一対の挟持部材を径方向へ相対的 に位置決めすることができるので、溶着作業を行う際の径方向への位置決め作業を 省略することができると 、う効果がある。 [0038] According to the liquid-filled vibration isolator according to claim 6, in addition to the effects exhibited by the liquid-filled vibration isolator according to claim 5, the pair of sandwiching members have their joint surfaces Are provided with a projecting portion and a recessed portion, and are configured to fit together in the axial direction of the partitioning means. Thus, when the joining surfaces of the sandwiching members are welded by the welding means, the welding operation can be performed with the sandwiching member temporarily fixed, and the work efficiency can be improved. is there. Further, since the pair of clamping members can be relatively positioned in the radial direction by fitting in the axial direction, the positioning work in the radial direction when performing the welding operation can be omitted. effective.
[0039] 更に、これら凸設部及び凹設部は、凸設部の頂部と凹設部の底部とが当接可能に 構成されているので、頂部と底部との当接面位置を、凸設部の突設高さ(凹設部の 凹設深さ)の分だけ、挟持部材の一端面に近づけることができる。よって、かかる頂部 と底部との当接面と超音波溶着手段の振動発信器 (ホーン)やレーザー溶着手段の レーザー照射器との間の距離を近づけることができるので、溶着手段からの振動や 熱を前記当接面に効率的に伝達することができ、その分、前記当接面の溶着をより 確実に行うことができると!/、う効果がある。  [0039] Further, since the convex portion and the concave portion are configured such that the top portion of the convex portion and the bottom portion of the concave portion can contact each other, the position of the contact surface between the top portion and the bottom portion is convex. It can be brought closer to one end surface of the holding member by the protruding height of the mounting portion (the depth of the recessed portion). Therefore, the distance between the contact surface between the top and bottom and the vibration transmitter (horn) of the ultrasonic welding means and the laser irradiator of the laser welding means can be reduced, so that vibration and heat from the welding means can be reduced. Can be efficiently transmitted to the abutment surface, and if the abutment surface can be more reliably welded to that extent, there is an effect!
[0040] 請求の範囲第 7項記載の液封入式防振装置ユニットによれば、第 2取付け具に段 差部を設けると共に、振動発生体側ブラケットの内周部に当接部を設けたので、第 2 取付け具を振動発生体側ブラケットの内周部に内嵌圧入する場合には、段差部を当 接部に当接させることで、圧入方向の位置決めを行うことができるという効果がある。 更に、大振幅の振動の入力に伴って第 2取付け具に対して圧入方向への加重が作 用した場合には、段差部が当接部に当接することで、第 2取付け具が振動発生体側 ブラケットの内周部力も抜けてしまうことを回避することができるという効果がある。  [0040] According to the liquid-filled vibration isolator unit of claim 7, since the stepped portion is provided on the second fixture and the contact portion is provided on the inner peripheral portion of the vibration generator side bracket. In the case where the second fixture is press-fitted into the inner peripheral portion of the vibration generator-side bracket, there is an effect that positioning in the press-fitting direction can be performed by bringing the step portion into contact with the contact portion. In addition, when a load in the press-fitting direction is applied to the second fixture due to the input of large amplitude vibration, the second fixture is caused to vibrate by the stepped portion coming into contact with the contact portion. There is an effect that it is possible to avoid the loss of the inner peripheral force of the body side bracket.
[0041] 請求の範囲第 8項記載の液封入式防振装置ユニットによれば、請求の範囲第 7項 記載の液封入式防振装置ユニットの奏する効果に加え、大径筒部が小径筒部よりも 第 1取付け具側に位置するように第 2取付け具を構成するとともに、その大径筒部を 振動発生体側ブラケットの内周部に内嵌圧入した場合には、第 2取付け具の段差部 が振動発生体側ブラケットの当接部よりも第 1取付け具側に位置するように構成され ているので、第 2取付け具が振動発生体側ブラケットの内周部力 抜けてしまうことを より確実に回避することができると!/、う効果がある。  [0041] According to the liquid-filled vibration isolator unit according to claim 8, in addition to the effect exhibited by the liquid-filled vibration isolator unit according to claim 7, the large-diameter tube portion is a small-diameter tube. If the second fixture is configured so that it is located on the first fixture side of the bracket, and the large-diameter cylindrical portion is press-fitted into the inner periphery of the vibration generator side bracket, the second fixture Since the step is positioned closer to the first fixture than the abutment of the vibration generator side bracket, it is more certain that the second fixture will lose the inner peripheral force of the vibration generator side bracket. It can be avoided!
[0042] 即ち、上記構成によれば、振動発生体を支持固定した後、振動発生体側ブラケット が分担荷重方向へ変位する場合 (即ち、第 2取付け具が第 1取付け具へ向けて変位 する場合)には、圧縮変形された防振基体の弾性回復力が第 2取付け具の移動を妨 げる力として働くので、第 2取付け具が振動発生体側ブラケットの内周部力 抜けや すくなるところ、請求の範囲第 8項記載の液封入式防振装置ユニットによれば、第 2 取付け具の段差部が振動発生体側ブラケットの当接部に当接することで、上記抜け を回避することができる。 That is, according to the above configuration, when the vibration generator side bracket is displaced in the shared load direction after the vibration generator is supported and fixed (that is, the second fixture is displaced toward the first fixture). In this case, the elastic recovery force of the vibration-damped base body that has been compressed and deformed acts as a force that hinders the movement of the second fixture, so the second fixture can easily remove the inner peripheral force of the vibration generator side bracket. Thus, according to the liquid-filled vibration isolator unit according to claim 8, the stepped portion of the second fixture comes into contact with the contact portion of the vibration generator side bracket, thereby avoiding the above-described disconnection. Can do.
[0043] なお、振動発生体側ブラケットが分担荷重と反対方向へ変位する場合 (即ち、第 2 取付け具が第 1取付け具力 離れる方向へ変位する場合)には、圧縮変形された防 振基体の弾性回復力が第 2取付け具の移動を補助する力として働き、第 2取付け具 が振動発生体側ブラケットの内周部から抜け難くなるので、上記抜けを防止する手段 は不要となる。 [0043] When the vibration generator-side bracket is displaced in the direction opposite to the shared load (that is, when the second fixture is displaced in the direction away from the first fixture force), The elastic recovery force acts as a force that assists the movement of the second fixture, and the second fixture is difficult to come off from the inner periphery of the vibration generator side bracket.
図面の簡単な説明  Brief Description of Drawings
[0044] [図 1]本発明の第 1実施の形態における液封入式防振装置の使用状態を示す模式 図であり、(a)は上面図であり、(b)は図 1 (a)の矢印 lb方向から見た側面図である。  FIG. 1 is a schematic diagram showing a usage state of a liquid-filled vibration isolator according to a first embodiment of the present invention, (a) is a top view, and (b) is FIG. 1 (a). It is the side view seen from the arrow lb direction.
[図 2]図 1 (a)の II II線における液封入式防振装置の断面図である。  FIG. 2 is a cross-sectional view of the liquid filled type vibration isolator taken along line II-II in FIG. 1 (a).
[図 3] (a)は、弾性仕切り膜の上面図であり、(b)は、図 3 (a)の nib— nib線における 弾性仕切り膜の断面図である。  [FIG. 3] (a) is a top view of the elastic partition membrane, and (b) is a cross-sectional view of the elastic partition membrane along the nib-nib line in FIG. 3 (a).
[図 4] (a)は、上側挟持部材の上面図であり、(b)は、図 4 (a)の IVb— IVb線における 上側挟持部材の断面図である。  4A is a top view of the upper clamping member, and FIG. 4B is a cross-sectional view of the upper clamping member taken along line IVb-IVb in FIG. 4A.
[図 5] (a)は、下側挟持部材の上面図であり、(b)は、図 5 (a)の Vb— Vb線における下 側挟持部材の断面図である。  FIG. 5 (a) is a top view of the lower holding member, and FIG. 5 (b) is a cross-sectional view of the lower holding member taken along the line Vb-Vb in FIG. 5 (a).
[図 6] (a)は、仕切り手段の上面図であり、 (b)は、図 6 (a)の VIb— VIb線における仕 切り手段の断面図である。  [FIG. 6] (a) is a top view of the partitioning means, and (b) is a cross-sectional view of the cutting means taken along the line VIb-VIb of FIG. 6 (a).
[図 7]仕切り手段の部分拡大断面図である。  FIG. 7 is a partially enlarged cross-sectional view of the partition means.
[図 8]第 2実施の形態における液封入式防振装置の断面図である。  FIG. 8 is a cross-sectional view of a liquid-filled vibration isolator in a second embodiment.
[図 9]第 3実施の形態における液封入式防振装置の断面図である。  FIG. 9 is a cross-sectional view of a liquid-filled vibration isolator according to a third embodiment.
[図 10] (a)は、仕切り手段の分解断面図であり、 (b)は、仕切り手段の断面図である。 符号の説明  [FIG. 10] (a) is an exploded sectional view of the partitioning means, and (b) is a sectional view of the partitioning means. Explanation of symbols
[0045] 100, 200 液封入式防振装置 (液封入式防振装置ユニットの一部) 1 第 1取付け金具 (第 1取付け具、車体フレーム側連結手段)[0045] 100, 200 Liquid-filled vibration isolator (part of liquid-filled vibration isolator unit) 1 1st mounting bracket (1st mounting bracket, body frame side connection means)
2 第 2取付け金具 (第 2取付け具、振動発生体側連結手段) 2a 大径筒部 2 Second mounting bracket (Second mounting bracket, vibration generator side coupling means) 2a Large diameter tube
2b 小径筒部  2b Small diameter cylinder
3 防振基体  3 Anti-vibration substrate
5 ダイヤフラム  5 Diaphragm
6 液体封入室  6 Liquid enclosure
6A 第 1液室 6A 1st liquid chamber
6B 第 2液室 6B Second liquid chamber
20 オリフィス 20 Orifice
7, 17 仕切り手段  7, 17 Partitioning means
8 弾性仕切り膜 (仕切り手段の一部)  8 Elastic partition membrane (part of partitioning means)
8a 開口部  8a opening
8c 第 1ゴム部  8c 1st rubber part
8d 第 2ゴム部  8d 2nd rubber part
81 薄板部材 (仕切り手段の一部)  81 Thin plate member (part of partitioning means)
9, 19 上側挟持部材 (挟持部材、仕切り手段の一部)  9, 19 Upper clamping member (Pinching member, part of partitioning means)
10, 110 下側挟持部材 (挟持部材、仕切り手段の一部)  10, 110 Lower clamping member (Pinching member, part of partitioning means)
9a, 10a 第 1ストッパ面部  9a, 10a First stopper surface
9b, 10b 第 2ストッパ面部  9b, 10b Second stopper surface
19e 凸設部  19e Projection
19el 頂部  19el top
110e 凹設部  110e recess
HOel 底部  HOel bottom
EG エンジン (振動発生体)  EG engine (vibration generator)
BF 車体フレーム  BF body frame
B2, B12 エンジン側ブラケット (振動発生体側ブラケット、液封入式防振装 置ユニットの一部) B12b 当接部 (振動発生体側ブラケットの当接部) B2, B12 Engine side bracket (vibration generator side bracket, part of liquid-filled vibration isolator unit) B12b contact part (contact part of vibration generator side bracket)
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0046] 以下、本発明の好ましい実施の形態について、添付図面を参照して説明する。図 1 は、本発明の第 1実施の形態における液封入式防振装置 100の使用状態を示す模 式図であり、(a)は、上面図であり、(b)は、図 1 (a)の矢印 lb方向力 見た側面図で ある。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing a usage state of the liquid-filled vibration isolator 100 according to the first embodiment of the present invention, (a) is a top view, and (b) is a diagram of FIG. ) Arrow lb direction force side view.
[0047] 液封入式防振装置 100は、自動車のエンジン EGを支持固定しつつ、そのエンジン EGの振動を車体フレーム BFへ伝達させないようにするための防振装置であり、図 1 に示すように、車体フレーム側ブラケット B1を介して車体フレーム BFに連結される一 方、エンジン側ブラケット B2を介してエンジン EGに連結される。  [0047] The liquid-filled vibration isolator 100 is a vibration isolator for supporting and fixing the engine EG of the automobile and preventing the vibration of the engine EG from being transmitted to the body frame BF, as shown in FIG. Further, it is connected to the vehicle body frame BF via the vehicle body frame side bracket B1, while being connected to the engine EG via the engine side bracket B2.
[0048] なお、車体フレーム側ブラケット B1は、取付け穴 Blaに揷通されたボルト(図示せ ず)により車体フレーム BFに締結固定され、エンジン側ブラケット B2は、取付け穴 B2 aに揷通されたボルト(図示せず)によりエンジン側部材 EG1に締結固定される。従つ て、エンジン EGを支持固定する液封入式防振装置 100には、図 1 (b)の下方向へ向 けて分担荷重が作用する。  [0048] The vehicle body frame side bracket B1 is fastened and fixed to the vehicle body frame BF by bolts (not shown) threaded through the mounting hole Bla, and the engine side bracket B2 is threaded through the mounting hole B2 a. It is fastened and fixed to the engine side member EG1 by a bolt (not shown). Therefore, a shared load acts on the liquid-filled vibration isolator 100 that supports and fixes the engine EG in the downward direction of FIG. 1 (b).
[0049] 図 2は、図 1 (a)の Π—Π線における液封入式防振装置 100の断面図である。なお、 図 2では、第 1取付け金具 1の断面視を省略して図示している。また、図 2中に 1点鎖 線で示した中心線は、液封入式防振装置 100の軸心 Oを示す。  FIG. 2 is a cross-sectional view of the liquid-filled vibration isolator 100 along the Π-Π line of FIG. 1 (a). In FIG. 2, the first mounting bracket 1 is not shown in cross section. In addition, the center line indicated by the alternate long and short dash line in FIG. 2 indicates the axis O of the liquid-filled vibration isolator 100.
[0050] 液封入式防振装置 100は、図 2に示すように、車体フレーム側ブラケット B1を介し て車体フレーム BF (図 1 (b)参照)側に取り付けられる第 1取付け金具 1と、エンジン 側ブラケット B2を介してエンジン EG (図 1 (b)参照)側に取付けられる筒状の第 2取 付け金具 2と、これらを連結すると共にゴム状弾性体から構成される防振基体 3とを主 に備えている。  [0050] As shown in FIG. 2, the liquid-filled vibration isolator 100 includes a first mounting bracket 1 attached to the vehicle body frame BF (see FIG. 1 (b)) via the vehicle body frame side bracket B1, and an engine. A cylindrical second mounting bracket 2 attached to the side of the engine EG (see FIG. 1 (b)) via the side bracket B2 and a vibration-proof base 3 composed of a rubber-like elastic body are connected. Mainly prepared.
[0051] 第 1取付け金具 1は、図 2に示すように、アルミニウム合金など力 軸心回りに対称 な上窄まりの断面略円錐台形状に形成され、その下端面には、車体フレーム B1との 締結固定用のめねじ部 11が上方へ向けて凹設されている。また、めねじ部 11の側 方には、車体フレーム側ブラケット B1の凹部に嵌合する位置決めピン 12が突設され ている。 [0052] 第 2取付け金具 2は、図 2に示すように、鉄鋼材料力も上下端 (図 2上側及び下側) が開口した筒状に構成されている。なお、第 2取付け金具 2は、段差を有して構成さ れており、その段差の下側(図 2下側)が大径筒部 2aとされ、段差の上側(図 2上側) が小径筒部 2bとされている。なお、第 2取付け金具 2は、図 2に示すように、その大径 筒部 2aがエンジン側ブラケット B2の内周部に内嵌圧入されて 、る。 [0051] As shown in FIG. 2, the first mounting bracket 1 is formed in a substantially truncated conical shape with an upper constriction symmetrical about the force axis, such as aluminum alloy, and has a body frame B1 on its lower end surface. The female screw portion 11 for fastening and fixing is recessed upward. Further, on the side of the female thread portion 11, a positioning pin 12 is provided so as to be fitted into the concave portion of the body frame side bracket B1. [0052] As shown in Fig. 2, the second mounting bracket 2 is formed in a cylindrical shape in which the upper and lower ends (upper and lower sides in Fig. 2) of the steel material force are opened. The second mounting bracket 2 has a step, and the lower side of the step (lower side in FIG. 2) is a large-diameter cylindrical portion 2a, and the upper side of the step (upper side in FIG. 2) is a small diameter. It is a cylindrical part 2b. As shown in FIG. 2, the second mounting bracket 2 has a large-diameter cylindrical portion 2a fitted into the inner peripheral portion of the engine side bracket B2.
[0053] 防振基体 3は、図 2に示すように、ゴム状弾性体力 軸心回りに対称な下窄まりの断 面略円錐台形状に形成され、第 1取付け金具 1の上端面及び側面と第 2取付け金具 2の下端側(主に大径筒部 2a)内周部との間に加硫接着されている。  [0053] As shown in FIG. 2, the vibration isolator base 3 is formed in a substantially frustoconical shape with a constricted bottom surface symmetrical about the axis of the rubber-like elastic body force. And the lower end side (mainly the large diameter cylindrical portion 2a) of the second mounting bracket 2 are vulcanized and bonded.
[0054] このように、本実施の形態の液封入式防振装置 100によれば、第 1取付け金具 1を 車体フレーム BF側に連結される車体フレーム側連結手段として構成すると共に、第 2取付け金具 2をエンジン EG (振動発生体)側に連結される振動発生体側連結手段 として構成したので、後述する仕切り手段 7から車体フレーム BFまでの振動伝達経 路の一部が防振基体 3によって構成される。  As described above, according to the liquid-filled vibration isolator 100 of the present embodiment, the first mounting bracket 1 is configured as the vehicle body frame side connecting means connected to the vehicle body frame BF side, and the second mounting is performed. Since the bracket 2 is configured as a vibration generator side coupling means that is coupled to the engine EG (vibration generator) side, a part of the vibration transmission path from the partition means 7 to the vehicle body frame BF, which will be described later, is configured by the vibration isolation base 3. Is done.
[0055] その結果、例えば、仕切り手段 7において、弾性仕切り膜 8が上側又は下側挟持部 材 9, 10に衝突して、それら上側又は下側挟持部材 9, 10が振動したとしても、その 振動が車体フレーム BFへ伝達されることを、振動伝達経路の一部を構成する防振 基体 3の振動絶縁効果により、確実に抑制して、異音の発生を大幅に低減することが できる。  As a result, for example, in the partitioning means 7, even if the elastic partition film 8 collides with the upper or lower clamping members 9 and 10 and the upper or lower clamping members 9 and 10 vibrate, The transmission of vibrations to the vehicle body frame BF can be reliably suppressed by the vibration insulation effect of the vibration isolation base 3 constituting a part of the vibration transmission path, and the generation of abnormal noise can be greatly reduced.
[0056] 防振基体 3の上端部(図 2上側)には、図 2に示すように、第 2取付け金具 2 (主に小 径筒部 2b)の内周面を覆うゴム膜 31が連設されており、このゴム膜 31には、後述す る上側及び下側挟持部材 9, 10の張り出し壁 9d, 10d (図 4及び図 5参照)及びダイ ャフラム 5の取付け金具 51がそれぞれ密着されて 、る。  [0056] As shown in FIG. 2, a rubber film 31 covering the inner peripheral surface of the second mounting bracket 2 (mainly the small diameter cylindrical portion 2b) is connected to the upper end portion (upper side in FIG. 2) of the vibration isolating base 3. The rubber film 31 is in close contact with projecting walls 9d and 10d (see FIGS. 4 and 5) of the upper and lower clamping members 9 and 10, which will be described later, and the mounting bracket 51 of the diaphragm 5 respectively. And
[0057] ダイヤフラム 5は、図 2に示すように、ゴム状弾性体から部分球状を有するゴム膜状 に構成されるものであり、第 2取付け金具 2 (小径筒部 2b)の上端部(図 2上側)に取 着されている。その結果、このダイヤフラム 5の下面側と防振基体 3の上面側との間に は、液体封入室 6が形成されている。  As shown in FIG. 2, the diaphragm 5 is formed from a rubber-like elastic body into a rubber film shape having a partial spherical shape, and the upper end (see FIG. 2) of the second mounting bracket 2 (small-diameter cylindrical portion 2b). 2 Upper side). As a result, a liquid sealing chamber 6 is formed between the lower surface side of the diaphragm 5 and the upper surface side of the vibration isolating substrate 3.
[0058] この液体封入室 6には、エチレングリコールなどの不凍性の液体(図示せず)が封 入されている。また、液体封入室 6は、図 2に示すように、仕切り手段 7 (弾性仕切り膜 8及び上側及び下側挟持部材 9, 10)によって、防振基体 3側(図 2下側)の第 1液室 6Aと、ダイヤフラム 5側(図 2上側)の第 2液室 6Bとの 2室に仕切られている。 [0058] The liquid enclosing chamber 6 contains an antifreeze liquid (not shown) such as ethylene glycol. Further, as shown in FIG. 2, the liquid sealing chamber 6 has partition means 7 (elastic partition membrane). 8 and the upper and lower clamping members 9, 10), the first liquid chamber 6A on the vibration isolator base 3 side (lower side in FIG. 2) and the second liquid chamber 6B on the diaphragm 5 side (upper side in FIG. 2) It is divided into rooms.
[0059] なお、ダイヤフラム 5は、上面視ドーナツ状の取付け金具 51に加硫接着されており 、図 2に示すように、その取付け金具 51を介して、第 2取付け金具 2の上端部(図 2上 側)に取着されている。 Note that the diaphragm 5 is vulcanized and bonded to a donut-shaped mounting bracket 51 as viewed from above, and as shown in FIG. 2, the upper end portion of the second mounting bracket 2 (see FIG. 2 Upper side).
[0060] 仕切り手段 7は、上述したように、液体封入室 6を第 1液室 6Aと第 2液室 6Bとに仕 切るものであり、ゴム状弾性材カゝら略円板状に構成される弾性仕切り膜 8と、その弾 性仕切り膜 8をその軸心方向で挟持固定する上側及び下側挟持部材 9, 10とを主〖こ 備えている。  [0060] As described above, the partition means 7 cuts the liquid sealing chamber 6 into the first liquid chamber 6A and the second liquid chamber 6B, and is configured in a substantially disc shape such as a rubber-like elastic member. And an upper and lower holding members 9 and 10 for holding and fixing the elastic partition film 8 in the axial direction.
[0061] 仕切り手段 7 (上側及び下側挟持部材 9, 10)の外周側には、図 2に示すように、第 2取付け金具 2の内周側(ゴム膜 31)との間にオリフィス 20が形成されている。このォ リフィス 20は、第 1液室 6Aと第 2液室 6Bとを互いに連通させるオリフィス流路である。  [0061] On the outer peripheral side of the partition means 7 (upper and lower clamping members 9, 10), as shown in Fig. 2, an orifice 20 is provided between the inner peripheral side (rubber film 31) of the second mounting bracket 2. Is formed. The orifice 20 is an orifice channel that allows the first liquid chamber 6A and the second liquid chamber 6B to communicate with each other.
[0062] なお、オリフィス 20は、上側挟持部材 9の張り出し壁 9d (図 4参照)に切り欠き形成さ れる切欠き部 9dlを介して、第 2液室 6Bに連通される一方、下側挟持部材 10の張り 出し壁 10d (図 5参照)に切り欠き形成される切り欠き部 10dlを介して、第 1液室 6A に連通されている。  [0062] The orifice 20 is communicated with the second liquid chamber 6B through a notch 9dl formed in a notch on the overhanging wall 9d (see Fig. 4) of the upper clamping member 9, while the lower clamping is performed. The member 10 communicates with the first liquid chamber 6A through a notch 10dl formed in the projecting wall 10d (see FIG. 5).
[0063] ここで、液封入式防振装置 100の組み立ては、まず、第 2取付け金具 2の上端側 ( 図 2上側)開口部から仕切り手段 7とダイヤフラム 5とを順に嵌め込み、次いで、第 2取 付け金具 2の小径筒部 2b全体を径方向(図 2左右方向)に縮径加工 (絞り加工)する ことにより行われる。なお、小径筒部 2bの上端(図 2上側)は、その全周にわたって予 め径方向内方側に折り曲げ加工されて 、る。  Here, in assembling the liquid-filled vibration isolator 100, first, the partition means 7 and the diaphragm 5 are fitted in order from the upper end side (the upper side in FIG. 2) of the second mounting bracket 2, and then the second mounting bracket 2 is fitted. This is done by reducing (drawing) the entire small diameter cylindrical portion 2b of the mounting bracket 2 in the radial direction (left and right direction in FIG. 2). Note that the upper end (upper side in FIG. 2) of the small diameter cylindrical portion 2b is bent inward in the radial direction over the entire circumference.
[0064] その結果、仕切り手段 7 (上側及び下側挟持部材 9, 10)は、図 2に示すように、防 振基体 3に設けた仕切り手段受け部 32とダイヤフラム 5との間で、液封入式防振装置 100の軸芯方向(図 2上下方向)に挟持固定される。なお、仕切り手段受け部 32は、 防振基体 3の上面側の複数箇所 (或いは全周)に段部として形成されており、その段 部によって仕切り手段 7 (下側挟持部材 10)の下端面(図 2下側面)を受け止める。  As a result, as shown in FIG. 2, the partition means 7 (upper and lower clamping members 9, 10) is liquid between the partition means receiving portion 32 provided on the vibration isolation base 3 and the diaphragm 5. The sealed vibration isolator 100 is clamped and fixed in the axial direction (vertical direction in Fig. 2). The partition means receiving portion 32 is formed as a step portion at a plurality of locations (or the entire circumference) on the upper surface side of the vibration-isolating base 3, and the lower end surface of the partition means 7 (lower holding member 10) is formed by the step portion. (Figure 2 lower side)
[0065] この組み立て状態においては、仕切り手段受け部 32が圧縮変形されており、この 仕切り手段受け部 32の弾性復元力が仕切り手段 7の保持力としてその仕切り手段 7 の下端面に作用されている。これにより、大振幅や高周波数の振幅が入力された場 合などでも、仕切り手段 7を強固かつ安定的に挟持固定して、各部材 8, 9, 10の位 置ずれや共振などに起因する動的な特性への影響を回避することができる。 In this assembled state, the partition means receiving portion 32 is compressed and deformed, and the elastic restoring force of the partition means receiving portion 32 serves as the holding force of the partition means 7 and the partition means 7 It is acted on the lower end surface. As a result, even when a large amplitude or high frequency amplitude is input, the partition means 7 is firmly and stably held and fixed, resulting in misalignment or resonance of the members 8, 9 and 10. The influence on dynamic characteristics can be avoided.
[0066] 次いで、図 3から図 7を参照して、仕切り手段 7を構成する各部材 8, 9, 10について 順次説明する。なお、各部材 8, 9, 10の説明においては、仕切り手段 7の上面図お よびその断面図である図 6及び図 7を適宜参照する。また、各図中に 1点鎖線で示し た中心線は、各部材 8, 9, 10の軸心 Oを示す。 Next, with reference to FIGS. 3 to 7, the members 8, 9, and 10 constituting the partitioning means 7 will be described sequentially. In the description of the members 8, 9, and 10, the top view of the partitioning means 7 and the cross-sectional views of FIGS. 6 and 7 are appropriately referred to. In addition, the center line indicated by the alternate long and short dash line in each figure indicates the axis O of each member 8, 9, and 10.
[0067] まず、図 3を参照して、弾性仕切り膜 8について説明する。図 3 (a)は、弾性仕切り膜First, the elastic partition film 8 will be described with reference to FIG. Figure 3 (a) shows an elastic partition membrane.
8の上面図であり、図 3(b)は、図 3 (a)の nib— nib線における弾性仕切り膜 8の断面 図である。 FIG. 3B is a cross-sectional view of the elastic partition film 8 taken along the nib-nib line in FIG.
[0068] 図 3に示すように、弾性仕切り膜 8は、ゴム状弾性体から略円板状に構成され、その 内部には、金属材料から略薄板状に構成される薄板部材 81が軸心 O方向(図 3 (b) 上下方向)略中間部に埋設されている。薄板部材 81は、弾性仕切り膜 8と同心の略 円板状に構成されている。  As shown in FIG. 3, the elastic partition film 8 is formed in a substantially disc shape from a rubber-like elastic body, and a thin plate member 81 that is formed in a substantially thin plate shape from a metal material is axially disposed therein. It is embedded in the middle of the O direction (Fig. 3 (b) vertical direction). The thin plate member 81 is configured in a substantially disc shape concentric with the elastic partition film 8.
[0069] なお、弾性仕切り膜 8の略中心部には、図 3 (a)に示すように、軸心 O方向視略円 形の開口部 8aが両面に開口形成されており、薄板部材 81は、図 3 (b)に示すように 、その周縁部のみが弾性仕切り膜 8内に埋設されている。また、薄板部材 13の最外 周縁は、後述する第 1ゴム部 8cと第 2ゴム部 8dとの境界部に位置している。  [0069] As shown in FIG. 3 (a), an opening 8a having a substantially circular shape when viewed from the axial center O direction is formed on both surfaces at a substantially central portion of the elastic partition film 8, and the thin plate member 81 As shown in FIG. 3 (b), only the peripheral edge is embedded in the elastic partition membrane 8. Further, the outermost peripheral edge of the thin plate member 13 is located at a boundary portion between a first rubber portion 8c and a second rubber portion 8d described later.
[0070] 弾性仕切り膜 8は、図 3 (b)に示すように、略一定の肉厚に形成されるゴム膜部 8bと 、そのゴム膜部 8bよりも径方向外方側に位置すると共に径方向外方側ほど薄肉のテ 一パー形状に形成される (即ち、軸心 O方向(図 3 (b)上下方向)にくびれた)第 1ゴム 部 8cと、その第 1ゴム部 8cよりも径方向外方側に位置し、かつ、軸心 O方向へ立ち上 力 Sることでゴム膜部 8b及び第 1ゴム部 8cよりも高く形成される第 2ゴム部 8dとを備えて 構成されている。第 2ゴム部 8dの両先端部は、先端方向(図 3 (b)上又は下方向)に 凸の断面円弧状に湾曲して形成されている。  [0070] As shown in FIG. 3 (b), the elastic partition membrane 8 has a rubber film portion 8b formed with a substantially constant thickness, and is positioned radially outward from the rubber film portion 8b. From the first rubber part 8c, which is formed into a thinner tapered shape toward the radially outer side (that is, constricted in the axial center O direction (Fig. 3 (b) vertical direction)) and the first rubber part 8c And a second rubber part 8d formed higher than the first rubber part 8c by the rising force S in the axial center O direction. Has been. Both end portions of the second rubber portion 8d are formed to be curved in a circular arc shape that is convex in the tip direction (upward or downward in FIG. 3 (b)).
[0071] なお、弾性仕切り膜 8は、第 1及び第 2ゴム部 8c, 8dが上側及び下側挟持部材 9, 1 0によって軸心 O方向(図 2 (b)上下方向)に押圧され (挟み込まれ)、仕切り手段 7の 組み立て状態においては、第 1及び第 2ゴム部 8c, 8dに軸心 O方向への予圧縮が 付与される(図 6参照)。 In the elastic partition membrane 8, the first and second rubber portions 8c, 8d are pressed in the direction of the axis O (the vertical direction in FIG. 2 (b)) by the upper and lower clamping members 9, 10 ( In the assembled state of the partition means 7, pre-compression in the direction of the axis O is applied to the first and second rubber parts 8c, 8d. (See Figure 6).
[0072] ここで、本実施の形態では、第 1ゴム部 8cの一部 (径方向外方側の一部)にのみ予 圧縮が付与されるが(図 7参照)、第 1ゴム部 8cの全体に予圧縮が付与されるように、 第 1ゴム部の膜厚および第 1ストツバ面部 9a, 10aの高さを設定しても良い。  Here, in the present embodiment, pre-compression is applied only to a part of the first rubber part 8c (a part on the radially outer side) (see FIG. 7), but the first rubber part 8c The thickness of the first rubber portion and the height of the first staggered surface portions 9a and 10a may be set so that pre-compression is applied to the whole.
[0073] このように、第 1及び第 2ゴム部 8c, 8dに予圧縮を付与することで、弾性仕切り膜 8 と上側及び下側挟持部材 9, 10との間に隙間が生じることを抑制して、空気溜まり( 気泡)の発生を回避することができる。その結果、動的な特性への悪影響を回避する ことができる。また、仕切り手段 7 (図 5参照)を液槽外で組み立てた後、その仕切り手 段 7を液槽内で第 2取付け具 2内に挿入して、液封入式防振装置 100 (図 2参照)を 組み立てることができるので、組み立て性の向上を図ることもできる。  [0073] In this way, by applying pre-compression to the first and second rubber portions 8c, 8d, it is possible to suppress the formation of a gap between the elastic partition film 8 and the upper and lower clamping members 9, 10. Thus, generation of air pockets (bubbles) can be avoided. As a result, adverse effects on dynamic characteristics can be avoided. Also, after assembling the partition means 7 (see Fig. 5) outside the liquid tank, the partition means 7 is inserted into the second fixture 2 inside the liquid tank, and the liquid-filled vibration isolator 100 (Fig. 2). Can be assembled, so assembling can be improved.
[0074] 次に、図 4を参照して、上側挟持部材 9について説明する。図 4 (a)は、上側挟持部 材 9の上面図であり、図 4 (b)は、図 4 (a)の IVb— IVb線における上側挟持部材 9の断 面図である。  Next, the upper clamping member 9 will be described with reference to FIG. FIG. 4 (a) is a top view of the upper clamping member 9, and FIG. 4 (b) is a sectional view of the upper clamping member 9 taken along the line IVb-IVb of FIG. 4 (a).
[0075] 上側挟持部材 9は、アルミニウム合金などの金属材料力 略円筒状に構成され、下 側挟持部材 10と圧入手段により一体化される。これにより、下側挟持部材 10と共に 弾性仕切り膜 8の周縁部を挟持固定しつつ(図 6参照)、仕切り手段 7を構成する。  [0075] The upper clamping member 9 is formed in a substantially cylindrical shape with a metal material force such as an aluminum alloy, and is integrated with the lower clamping member 10 by press-fitting means. As a result, the partitioning means 7 is configured while sandwiching and fixing the peripheral portion of the elastic partition film 8 together with the lower sandwiching member 10 (see FIG. 6).
[0076] この上側挟持部材 9の下端(図 4 (b)下側)には、図 4 (b)に示すように、弾性仕切り 膜 8の第 1ゴム部 8cを押圧する第 1ストツバ面部 9aと、その第 1ストツバ面部 9aよりも径 方向外方側に位置し、かつ、第 1ストツバ面部 9aよりも軸心方向に後退して形成(凹 設)される第 2ストッパ面部 9bとが全周にわたつて形成されて!、る。  [0076] At the lower end of the upper clamping member 9 (lower side in Fig. 4 (b)), as shown in Fig. 4 (b), a first staggered surface portion 9a that presses the first rubber portion 8c of the elastic partition film 8 is provided. And a second stopper surface portion 9b that is located radially outward from the first staggered surface portion 9a and is retreated (recessed) in the axial direction from the first staggered surface portion 9a. Formed around Zhou! RU
[0077] なお、本実施の形態では、第 1ストツバ面部 9aの径方向内方側及び外方側の両方 の端部が断面円弧状に湾曲して形成される一方、第 2ストツバ面部 9bは、径方向内 方側の端部が断面円弧状に形成され、径方向外方側の端部が直線状に形成されて いる(図 7参照)。これにより、予圧縮が付与された弾性仕切り膜 8 (第 2ゴム部 8d)が 変形するためのスペースが確保されて 、る。  In the present embodiment, both the radially inner and outer ends of the first staggered surface portion 9a are formed to be curved in a circular arc shape, while the second staggered surface portion 9b is The end portion on the radially inner side is formed in an arc shape in cross section, and the end portion on the radially outer side is formed in a straight line (see FIG. 7). Thereby, a space for deforming the elastic partition membrane 8 (second rubber portion 8d) to which pre-compression is applied is secured.
[0078] 上側挟持部材 9の外周側には、図 4 (b)に示すように、圧入面部 9cと張り出し壁 9d とが全周にわたつて設けられて!/ヽる。  [0078] On the outer peripheral side of the upper clamping member 9, as shown in FIG. 4 (b), a press-fitting surface portion 9c and an overhanging wall 9d are provided over the entire circumference!
[0079] 圧入面部 9cは、下側挟持部材 10の圧入面部 10c (図 5参照)が外嵌圧入される部 位であり、第 2ストッパ面部 9bに連設されている。一方、張り出し壁 9dは、オリフィス 2 0 (図 1参照)を形成するためのオリフィス形成壁であり、径方向外方側へ張り出して 形成されている。 [0079] The press-fit surface portion 9c is a portion into which the press-fit surface portion 10c (see Fig. 5) of the lower holding member 10 is externally fitted. It is connected to the second stopper surface portion 9b. On the other hand, the overhanging wall 9d is an orifice forming wall for forming the orifice 20 (see FIG. 1), and is formed to protrude outward in the radial direction.
[0080] なお、張り出し壁 9dの周方向の一部には、図 4 (a)に示すように、上面視略コ字状 の切り欠き部 9dlが切り欠き形成されている。この切り欠き部 9dlは、オリフィス 20を 第 2液室 6Bに連通するためのオリフィス出入口である(図 1参照)。  In addition, as shown in FIG. 4 (a), a cutout portion 9dl that is substantially U-shaped in top view is cut out in a part of the protruding wall 9d in the circumferential direction. This notch 9dl is an orifice inlet / outlet for communicating the orifice 20 with the second liquid chamber 6B (see FIG. 1).
[0081] 次に、図 5を参照して、下側挟持部材 10について説明する。図 5 (a)は、下側挟持 部材 10の上面図であり、図 5 (b)は、図 5 (a)の Vb— Vb線における下側挟持部材 10 の断面図である。  Next, the lower holding member 10 will be described with reference to FIG. FIG. 5 (a) is a top view of the lower holding member 10, and FIG. 5 (b) is a cross-sectional view of the lower holding member 10 taken along the line Vb-Vb in FIG. 5 (a).
[0082] 下側挟持部材 10は、アルミニウム合金などの金属材料力も略円筒状に構成され、 上述した上側挟持部材 9と圧入手段により一体ィ匕される。これにより、上述したように 、上側挟持部材 9と共に弾性仕切り膜 8の周縁部を挟持固定しつつ(図 6参照)、仕 切り手段 7を構成する。  [0082] The lower clamping member 10 is also formed in a substantially cylindrical shape with a metal material force such as an aluminum alloy, and is integrally joined with the upper clamping member 9 described above by press-fitting means. Thus, as described above, the cutting means 7 is configured while holding and fixing the peripheral portion of the elastic partition film 8 together with the upper holding member 9 (see FIG. 6).
[0083] この下側挟持部材 10の内周側下端(図 5 (b)下側)には、図 5 (b)に示すように、張 り出し部が径方向内方側へ張り出し形成されており、この張り出し部には、弾性仕切 り膜 8の第 1ゴム部 8cを押圧する第 1ストツバ面部 10aと、その第 1ストツバ面部 10aよ りも径方向外方側に位置し、かつ、第 1ストツバ面部 10aよりも軸心方向に後退して形 成(凹設)される第 2ストツバ面部 10bとが全周にわたって形成されている。  [0083] As shown in Fig. 5 (b), a protruding portion is formed to protrude radially inward at the lower end on the inner peripheral side of this lower clamping member 10 (lower side in Fig. 5 (b)). The overhanging portion is located on the radially outward side of the first strobe surface portion 10a that presses the first rubber portion 8c of the elastic partition membrane 8 and the first strobe surface portion 10a, and A second staggered surface portion 10b formed (recessed) is formed so as to recede in the axial direction from the first staggered surface portion 10a.
[0084] なお、本実施の形態では、第 1及び第 2ストッパ面部 10a, 10bの径方向内方側及 び外方側の両方の端部が断面円弧状に湾曲して形成されている(図 7参照)。  In the present embodiment, both the radially inner and outer ends of the first and second stopper surface portions 10a and 10b are curved in a circular arc shape in cross section ( (See Figure 7.)
[0085] また、図 5に示すように、下側挟持部材 10は、その内周側に圧入面部 10cが設けら れると共に、外周側に張り出し壁 9dが全周にわたつて設けられて ヽる。  Further, as shown in FIG. 5, the lower clamping member 10 is provided with a press-fitting surface portion 10c on the inner peripheral side thereof, and an overhanging wall 9d provided on the entire outer peripheral side. .
[0086] 圧入面部 10cは、上述したように、上側挟持部材 9の圧入面部 9c (図 4参照)に外 嵌圧入する部位であり、第 2ストツバ面部 10bに連設されている。一方、張り出し壁 10 dは、上述した張り出し壁 9dと共にオリフィス 20 (図 1参照)を形成するためのオリフィ ス形成壁であり、径方向外方側へ張り出して形成されて 、る。  [0086] As described above, the press-fit surface portion 10c is a portion that is externally press-fitted into the press-fit surface portion 9c (see FIG. 4) of the upper clamping member 9, and is connected to the second staggered surface portion 10b. On the other hand, the projecting wall 10 d is an orifice forming wall for forming the orifice 20 (see FIG. 1) together with the projecting wall 9 d described above, and is formed so as to project outward in the radial direction.
[0087] 張り出し壁 10dの周方向の一部には、図 5 (a)に示すように、上面視略コ字状の切り 欠き部 10dlが切り欠き形成されている。この切り欠き部 10dlは、オリフィス 20を第 1 液室 6Aに連通するためのオリフィス出入口である。 [0087] As shown in Fig. 5 (a), a cutout portion 10dl that is substantially U-shaped in top view is cut out in a part of the projecting wall 10d in the circumferential direction. This notch 10dl connects the orifice 20 to the first This is the orifice inlet / outlet for communicating with the liquid chamber 6A.
[0088] また、下側挟持部材 10の外周部には、その周方向の一部に縦壁 10eが立設され ている。この縦壁 10eは、オリフィス 20 (図 1参照)を周方向に分断するための壁部で あり、仕切り手段 7は、この縦壁 10eが周方向において上側及び下側挟持部材 9, 10 の切り欠き部 9dl, 10dlの間に位置するように組み立てられる(図 6参照)。  [0088] Further, a vertical wall 10e is erected on a part of the outer circumferential portion of the lower holding member 10 in the circumferential direction. The vertical wall 10e is a wall portion for dividing the orifice 20 (see FIG. 1) in the circumferential direction, and the partition means 7 is configured to cut the upper and lower clamping members 9, 10 in the circumferential direction. It is assembled so that it is located between the notches 9dl and 10dl (see Fig. 6).
[0089] 次に、図 6及び図 7を参照して、仕切り手段 7について説明する。図 6 (a)は、仕切り 手段 7の上面図であり、図 6 (b)は、図 6 (a)の VIb— VIb線における仕切り手段 7の断 面図である。また、図 7は、仕切り手段 7の部分拡大断面図である。  Next, the partition means 7 will be described with reference to FIGS. 6 and 7. 6 (a) is a top view of the partition means 7, and FIG. 6 (b) is a cross-sectional view of the partition means 7 along the VIb-VIb line of FIG. 6 (a). FIG. 7 is a partially enlarged sectional view of the partition means 7.
[0090] 仕切り手段 7の組み立ては、液槽外で行われ、まず、弾性仕切り膜 8を上側及び下 側挟持部材 9, 10によって軸心 O方向の両側から挟持する。次いで、上側挟持部材 9を下側挟持部材 10へ向けて軸心 O方向へ更に押し込むことで、上側挟持部材 9の 圧入面部 9cに下側挟持部材 10の圧入面部 10cを外嵌圧入する。これにより、図 6に 示すように、仕切り手段 7が複数の部材 8— 10により一体的に構成される。  The assembly of the partition means 7 is performed outside the liquid tank. First, the elastic partition film 8 is clamped from both sides in the direction of the axis O by the upper and lower clamping members 9 and 10. Next, the upper clamping member 9 is further pushed in the direction of the axis O toward the lower clamping member 10, so that the press-fitting surface portion 10 c of the lower clamping member 10 is press-fitted into the press-fitting surface portion 9 c of the upper clamping member 9. As a result, as shown in FIG. 6, the partition means 7 is integrally constituted by the plurality of members 8-10.
[0091] なお、一体化された仕切り手段 7は、液槽内に浸漬され、その液槽内で第 2取付け 金具 2内に挿入される。  Note that the integrated partition means 7 is immersed in the liquid tank and inserted into the second mounting bracket 2 in the liquid tank.
[0092] この場合、弾性仕切り膜 8の第 1及び第 2ゴム部 8c, 8dには、上側及び下側挟持部 材 9, 10の第 1及び第 2ストッパ面部 9a, 9b, 10a, 10bによる軸心 O方向への押圧 力が作用して、予圧縮が付与される。その結果、図 7に示すように、第 1及び第 2ゴム 部 13c, 13dが第 1及び第 2ストッパ面部 14a— 15bにより囲まれる空間内に充填され る。但し、第 1ゴム部 8cには、上述したように、その一部 (径方向外方側)にのみ予圧 縮が付与される。  [0092] In this case, the first and second rubber portions 8c, 8d of the elastic partition membrane 8 are formed by the first and second stopper surface portions 9a, 9b, 10a, 10b of the upper and lower holding member members 9, 10. A pressing force in the direction of the axis O acts and pre-compression is applied. As a result, as shown in FIG. 7, the first and second rubber portions 13c, 13d are filled in the space surrounded by the first and second stopper surface portions 14a-15b. However, as described above, the first rubber portion 8c is preliminarily compressed only on a part (outer side in the radial direction).
[0093] また、仕切り手段 7の組み立て状態においては、図 6及び図 7に示すように、薄板部 材 81の外周縁が上側及び下側挟持部材 9, 10の径方向内方側の端面よりも径方向 外方側に位置するように構成されている。そのため、仕切り手段 7の軸心方向視にお いては、薄板部材 13の外周縁が上側及び下側挟持部材 9, 10と重合する。  Further, in the assembled state of the partition means 7, as shown in FIGS. 6 and 7, the outer peripheral edge of the thin plate member 81 is from the end surfaces on the radially inner side of the upper and lower clamping members 9, 10. Is also configured to be located radially outward. Therefore, when the partition means 7 is viewed in the axial direction, the outer peripheral edge of the thin plate member 13 overlaps with the upper and lower clamping members 9 and 10.
[0094] また、図 7に示すように、第 1ゴム部 8cと第 1ストッパ面部 9a, 10aとの間には、径方 向内方側(図 7右側)において、隙間が形成されている。これにより、弾性仕切り膜 8 の往復動変形をし易くして、比較的小振幅の振動が入力される場合の低動ばね特性 の向上が図られている。 Further, as shown in FIG. 7, a gap is formed between the first rubber portion 8c and the first stopper surface portions 9a, 10a on the radially inner side (right side in FIG. 7). . This facilitates the reciprocating deformation of the elastic partition membrane 8 and provides a low dynamic spring characteristic when relatively small amplitude vibration is input. Improvements are being made.
[0095] なお、このように隙間を設けることは、低動ばね特性の確保には有効である力 往 復動変位する弾性仕切り膜 8が第 1ストツバ面部 9a, 10aと衝突して異音の発生を招 くという不具合がある。し力しながら、本発明では、仕切り手段 7から車体フレーム BF への振動伝達経路の一部を防振基体 3で構成したので (図 1及び図 2参照)、前記衝 突に起因する振動が車体フレーム BFへ伝達されることを、防振基体 3の振動絶縁効 果により、確実に抑制して、異音の発生を大幅に低減することができる。  [0095] It should be noted that providing the gap in this manner is effective for ensuring the low dynamic spring characteristics. The elastic partition film 8 that moves forward, backward, and backwardly collides with the first staggered surface portions 9a, 10a and generates abnormal noise. There is a problem of causing the occurrence. However, in the present invention, since a part of the vibration transmission path from the partition means 7 to the vehicle body frame BF is configured by the vibration isolating base 3 (see FIGS. 1 and 2), the vibration caused by the collision is not generated. Transmission to the vehicle body frame BF can be reliably suppressed by the vibration insulation effect of the vibration isolating base 3, and the generation of abnormal noise can be greatly reduced.
[0096] 次いで、図 8を参照して、第 2実施の形態について説明する。第 1実施の形態では 、エンジン側ブラケット B2の内周部を断面直線状に形成したが、第 2実施の形態の エンジン側ブラケット B12は、その内周部に当接部 B12bが形成されている。なお、 上記した第 1実施の形態と同一の部分には同一の符号を付して、その説明は省略す る。  [0096] Next, a second embodiment will be described with reference to FIG. In the first embodiment, the inner peripheral portion of the engine side bracket B2 is formed in a linear cross section, but the engine side bracket B12 of the second embodiment has a contact portion B12b formed on the inner peripheral portion thereof. . The same parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
[0097] 図 8は、液封入式防振装置 100の断面図であり、図 1 (a)の II II線における断面図 に対応する。図 8に示すように、エンジン側ブラケット B12の内周部には、当接部 B12 bが径方向内方側に張り出して形成されている。よって、第 2取付け金具 2をエンジン 側ブラケット B12の内周部に内嵌圧入する場合には、その段差部を当接部 B12bに 当接させることで、圧入方向の位置決めを行うことができる。  FIG. 8 is a cross-sectional view of the liquid-filled vibration isolator 100 and corresponds to the cross-sectional view taken along the line II-II in FIG. 1 (a). As shown in FIG. 8, a contact portion B12b is formed on the inner peripheral portion of the engine side bracket B12 so as to protrude radially inward. Therefore, when the second mounting bracket 2 is press-fitted into the inner peripheral portion of the engine side bracket B12, positioning in the press-fitting direction can be performed by bringing the stepped portion into contact with the contact portion B12b.
[0098] 更に、第 2取付け金具 2は、大径筒部 2aが小径筒部 2bよりも第 1取付け金具 1側に 位置すると共に、図 8に示す内嵌圧入状態では、第 2取付け金具 2の段差部がェン ジン側ブラケット B12の当接部 B 12bよりも第 1取付け金具 1側に位置するように構成 されている。その結果、第 2取付け金具 2がエンジン側ブラケット B12の内周部力も抜 けてしまうことをより確実に回避することができる。  [0098] Further, in the second mounting bracket 2, the large-diameter cylindrical portion 2a is positioned closer to the first mounting bracket 1 than the small-diameter cylindrical portion 2b. The step portion is located on the first mounting bracket 1 side with respect to the contact portion B 12b of the engine side bracket B12. As a result, it is possible to more reliably prevent the second mounting bracket 2 from releasing the inner peripheral force of the engine side bracket B12.
[0099] 次いで、図 9及び図 10を参照して、第 3実施の形態について説明する。第 1実施の 形態では、上側及び下側挟持部材 9, 10が圧入手段により一体化される場合を説明 したが、第 2実施の形態の上側及び下側挟持部材 19, 110は、溶着手段により一体 化される。なお、上記した第 1実施の形態と同一の部分には同一の符号を付して、そ の説明は省略する。  Next, a third embodiment will be described with reference to FIG. 9 and FIG. In the first embodiment, the case where the upper and lower holding members 9, 10 are integrated by the press-fitting means has been described. However, the upper and lower holding members 19, 110 of the second embodiment are formed by the welding means. It is integrated. The same parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
[0100] 図 9は、液封入式防振装置 200の断面図であり、図 1 (a)の II II線における断面図 に対応する。また、図 10 (a)は、仕切り手段 17の分解断面図であり、図 10 (b)は、仕 切り手段 17の断面図である。 FIG. 9 is a cross-sectional view of the liquid-filled vibration isolator 200, and is a cross-sectional view taken along line II-II in FIG. 1 (a). Corresponding to 10 (a) is an exploded sectional view of the partitioning means 17, and FIG. 10 (b) is a sectional view of the cutting means 17.
[0101] 第 3実施の形態における上側及び下側挟持部材 19, 110は、熱可塑性の榭脂材 料力ゝら軸心 Oを有する略円環状に構成されており、図 10に示すように、弾性仕切り膜[0101] The upper and lower clamping members 19, 110 in the third embodiment are configured in a substantially annular shape having an axis O such as a thermoplastic resin material, and as shown in FIG. , Elastic partition membrane
8の周縁部を挟持した状態で溶着手段により互いの接合面が溶着される。これによりThe joint surfaces are welded to each other by the welding means in a state where the peripheral edge of 8 is sandwiched. This
、一体化されて、仕切り手段 17を構成する(図 10 (b)参照)。 The partitioning means 17 is integrated into one piece (see FIG. 10 (b)).
[0102] ここで、図 10 (a)に示すように、上側挟持部材 19には、第 2ストツバ面部 9bの径方 向外方側に凸設部 19eが全周にわたって凸設され、下側挟持部材 110には、第 2ス トツパ面部 10bの径方向外方側に凹設部 110eが全周にわたって凹設されている。 [0102] Here, as shown in Fig. 10 (a), the upper clamping member 19 is provided with a projecting portion 19e on the outer side in the radial direction of the second staggered surface portion 9b. In the clamping member 110, a recessed portion 110e is recessed over the entire circumference on the radially outer side of the second stopper surface portion 10b.
[0103] これら凸設部 19eと凹設部 110eとは、軸心方向で嵌合可能に構成されており、そ の当接面(凸設部 19eの外面と凹設部 110eの内面と)が溶着手段により溶着される 接合面とされている。 [0103] The projecting portion 19e and the recessed portion 110e are configured to be fitted in the axial direction, and contact surfaces thereof (the outer surface of the projecting portion 19e and the inner surface of the recessed portion 110e). Is the joint surface that is welded by the welding means.
[0104] なお、仕切り手段 7の組み立て状態では、図 10 (b)に示すように、凸設部 19eの頂 部 19elと凹設部 110eの底部 l lOelとが当接されるように、凸設部 19eの凸設高さと 凹設部 110eの凹設深さとが設定されており、この当接部 (底部 14elと頂部 15clと) が溶着手段により主に溶着される。  [0104] In the assembled state of the partition means 7, as shown in Fig. 10 (b), the convex portion 19e has a top portion 19el and a concave portion 110e has a bottom portion lOel in contact with each other. The height of the projecting portion 19e and the depth of the recessed portion 110e are set, and the contact portions (the bottom portion 14el and the top portion 15cl) are mainly welded by the welding means.
[0105] ここで、溶着手段としては、例えば、超音波溶着法やレーザー溶着法などの公知の 技術が例示される。超音波溶着法は、上側及び下側挟持部材 19, 110の接合面( 即ち、凸設部 19eの頂部 19elと凹設部 110eの底部 l lOel)に圧力と超音波による 振動を加え、その摩擦熱によって接合面における榭脂材料を溶融'接合するもので ある。  [0105] Here, examples of the welding means include known techniques such as an ultrasonic welding method and a laser welding method. In the ultrasonic welding method, pressure and ultrasonic vibration are applied to the joint surfaces of the upper and lower clamping members 19, 110 (that is, the top 19el of the convex portion 19e and the bottom l lOel of the concave portion 110e), and the friction between them. The resin material on the joining surface is melted and joined by heat.
[0106] また、レーザー溶着法は、上側挟持部材 19を光透過性の熱可塑性榭脂材料から 構成する一方、下側挟持部材 110を光吸収性の熱可塑性榭脂材料カゝら構成し、接 合面 (即ち、凸設部 19eの頂部 19elと凹設部 110eの底部 l lOel)に圧力を加えな 力 その境界付近にレーザービームの焦点を合わせて照射することで、凸設部 19e の頂部 10el (光吸収性の榭脂材料)を発熱させると共に、その熱が凹設部 110eの 底部 11 Oe 1にも伝わることで、接合面を溶融 ·接合するものである。  [0106] Further, in the laser welding method, the upper holding member 19 is made of a light-transmitting thermoplastic resin material, while the lower holding member 110 is made of a light-absorbing thermoplastic resin material, Applying pressure to the joint surfaces (i.e., the top 19el of the convex portion 19e and the bottom l lOel of the concave portion 110e), the laser beam is focused near the boundary to irradiate the convex portion 19e. The top portion 10el (light-absorbing resin material) is heated, and the heat is also transmitted to the bottom portion 11Oe1 of the recessed portion 110e to melt and join the joint surfaces.
[0107] なお、接合面の上記溶着手段による溶着は、周方向に部分的(例えば、周方向に 9 0° 間隔に 4力所)に行われるものであっても良ぐ或いは、周方向全周に行われるも のであっても良い。部分的に行うものであれば、溶着コストを削減することができる一 方、全周に行うものであれば、接合強度の信頼性を確保することができる。 [0107] It should be noted that the welding of the joining surface by the welding means is partially performed in the circumferential direction (for example, 9 mm in the circumferential direction). It may be performed at four power points at intervals of 0 °, or may be performed all around the circumferential direction. If it is performed partially, the welding cost can be reduced. On the other hand, if it is performed all around, the reliability of the bonding strength can be ensured.
[0108] 以上、実施の形態に基づき本発明を説明したが、本発明は上記実施の形態に何ら 限定される物ではなぐ本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能 であることは容易に推察できるものである。  As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. This can be easily guessed.
[0109] 例えば、上記各実施の形態では、本発明の適用対象として、自動車のエンジン EG と車体フレーム BFとの間に設けられる液封入式防振装置 100, 200を例に説明した 力 必ずしもこれに限られるものではなぐ他の液封入式防振装置に本発明を適用す ることは当然可能である。例えば、トランスミッション (振動発生体)と車体フレームとの 間に設けられる液封入式防振装置に本発明を適用しても良い。  [0109] For example, in each of the above-described embodiments, as an application object of the present invention, the liquid-filled vibration isolator 100, 200 provided between the engine EG of the automobile and the vehicle body frame BF is taken as an example. Of course, the present invention can be applied to other liquid-sealed vibration isolator other than the above. For example, the present invention may be applied to a liquid-filled vibration isolator provided between a transmission (vibration generator) and a body frame.
[0110] また、上記各実施の形態では、第 2取付け金具 2の大径筒部 2aをエンジン側ブラケ ット B2の内周部に内嵌圧入する場合を説明したが、必ずしもこれに限られるわけで はなぐ第 2取付け金具 2の小径筒部 2bをエンジン側ブラケット B2の内周部に内嵌 圧入するように構成しても良 、。  [0110] Further, in each of the above-described embodiments, the case where the large-diameter cylindrical portion 2a of the second mounting bracket 2 is press-fitted into the inner peripheral portion of the engine-side bracket B2 has been described, but the present invention is not necessarily limited thereto. However, the small-diameter cylindrical portion 2b of the second mounting bracket 2 may be configured to be press-fitted into the inner peripheral portion of the engine side bracket B2.
[0111] なお、このように構成した場合には、第 2取付け金具 2の段差部をエンジン側ブラケ ット B2の開口部に当接させることができるので、上述した当接部 B12bを設ける場合 と同様に、内嵌圧入時の位置決めや圧入部の抜け防止効果を得ることができる。  [0111] In the case of such a configuration, the stepped portion of the second mounting bracket 2 can be brought into contact with the opening of the engine side bracket B2, so that the above-described contact portion B12b is provided. In the same manner as described above, it is possible to obtain an effect of positioning at the time of internal press-fitting and preventing the press-fitted portion from coming off.
[0112] また、上記第 3実施の形態では、液封入式防振装置 200が、第 1実施の形態にお ける液封入式防振装置 100と同様に、内周部を直線状に形成したエンジン側ブラケ ット B2に圧入される場合を説明した力 必ずしもこれに限られるものではなぐ第 2実 施の形態の場合と同様に、当接部 B12bを有するエンジン側ブラケット B12に液封入 式防振装置 200を圧入して構成することは当然可能である。  [0112] In the third embodiment, the liquid-filled vibration isolator 200 has an inner peripheral portion formed in a straight line, similar to the liquid-filled vibration isolator 100 in the first embodiment. Force explained for press-fitting into engine-side bracket B2 As in the case of the second embodiment, which is not necessarily limited to this, a liquid-filled type prevention is applied to the engine-side bracket B12 having the contact portion B12b. Of course, it is possible to press-fit and configure the vibration device 200.
[0113] また、上記各実施の形態では説明を省略したが、車体フレーム側ブラケット B1の内 周面 (液封入式防振装置 100, 200の収容空間の内周面)と、エンジン側ブラケット B 2の外周面とに、それぞれゴム状弾性体を加硫接着等により取着して、変位規制を可 能とすることで、大変位入力時のストツバ作用が得られるように構成しても良 、。  [0113] Although the description has been omitted in each of the above embodiments, the inner peripheral surface of the body frame side bracket B1 (the inner peripheral surface of the accommodation space of the liquid-filled vibration isolator 100, 200) and the engine side bracket B A rubber elastic body is attached to the outer peripheral surface of 2 by vulcanization adhesion, etc., to enable displacement regulation, so that a stubbing action at the time of large displacement input can be obtained. ,.

Claims

請求の範囲 The scope of the claims
[1] 第 1取付け具と、筒状の第 2取付け具と、その第 2取付け具と前記第 1取付け具とを 連結し、ゴム状弾性材から構成される防振基体と、前記第 2取付け具に取付けられて 前記防振基体との間に液体封入室を形成するダイヤフラムと、前記液体封入室を前 記防振基体側の第 1液室と前記ダイヤフラム側の第 2液室とに仕切る仕切り手段と、 その仕切り手段の外周面と前記第 2取付け具の内周面との間に形成され、前記第 1 液室と第 2液室とを連通させるオリフィスとを備える液封入式防振装置において、 前記仕切り手段は、ゴム状弾性材力 構成される弾性仕切り膜と、その弾性仕切り 膜内に埋設され金属材料から略薄板状に構成される薄板部材と、前記弾性仕切り膜 をその軸心方向で挟持固定する挟持部材とを備え、  [1] A first mounting tool, a cylindrical second mounting tool, the second mounting tool and the first mounting tool connected to each other, and a vibration isolating base made of a rubber-like elastic material; A diaphragm which is attached to a fixture and forms a liquid enclosure chamber with the vibration isolating substrate, and the liquid enclosure chamber is divided into a first liquid chamber on the vibration isolating substrate side and a second liquid chamber on the diaphragm side. A liquid-filled type anti-proof device comprising: partitioning means for partitioning; and an orifice formed between an outer peripheral surface of the partitioning means and an inner peripheral surface of the second fixture, and communicating the first liquid chamber and the second liquid chamber. In the vibration device, the partition means includes an elastic partition film configured by a rubber-like elastic material force, a thin plate member embedded in the elastic partition film and configured in a substantially thin plate shape from the metal material, and the elastic partition film A clamping member that clamps and fixes in the axial direction,
前記弾性仕切り膜は、その径方向外方側ほど薄肉のテーパー状に構成される第 1 ゴム部と、その第 1ゴム部よりも径方向外方側に位置すると共に軸心方向に立ち上が る第 2ゴム咅とを備え、  The elastic partition membrane has a first rubber portion that is formed in a tapered shape that is thinner toward the radially outer side, and is positioned radially outward from the first rubber portion and rises in the axial direction. Second rubber bowl
前記一対の挟持部材は、前記弾性仕切り膜の第 1ゴム部を受け止め可能な第 1スト ツバ面部と、その第 1ストツバ面部よりも軸心方向に後退して位置すると共に前記弾性 仕切り膜の第 2ゴム部を受け止め可能な第 2ストツバ面部とを備え、  The pair of clamping members are positioned at a first stubber surface portion capable of receiving the first rubber portion of the elastic partition membrane, and retracted in the axial direction from the first stubber surface portion, and are disposed on the first partition portion of the elastic partition membrane. 2 With a second staggered surface that can receive the rubber part,
前記薄板部材は、その外周縁が前記一対の挟持部材の径方向内方側の端面より も径方向外方側に位置し、  The outer peripheral edge of the thin plate member is located on the radially outer side than the end surfaces on the radially inner side of the pair of clamping members,
前記第 1取付け具を車体フレーム側に連結される車体フレーム側連結手段として 構成すると共に、前記第 2取付け具を振動発生体側に連結される振動発生体側連 結手段として構成することで、前記仕切り手段から前記車体フレームまでの振動伝達 経路の一部が前記防振基体によって構成されていることを特徴とする液封入式防振 装置。  The first fixture is configured as a vehicle body frame side coupling means coupled to the vehicle body frame side, and the second fixture is configured as a vibration generator side coupling means coupled to the vibration generator side. A liquid-filled vibration damping device, wherein a part of a vibration transmission path from the means to the vehicle body frame is constituted by the vibration damping base.
[2] 前記一対の挟持部材の第 1ストツバ面部は、前記仕切り手段の径方向内方側の端 部が断面円弧状に湾曲して形成されていることを特徴とする請求の範囲第 1項記載 の液封入式防振装置。  [2] The first staggered surface portion of the pair of sandwiching members is formed such that ends on the radially inner side of the partition means are curved in a circular arc shape in cross section. The liquid-filled vibration isolator as described.
[3] 前記弾性仕切り膜は、略中心部に開口部が開口形成されており、  [3] The elastic partition membrane has an opening formed substantially in the center,
前記薄板部材の周縁部のみが前記弾性仕切り膜内に埋設されるように構成されて いることを特徴とする請求の範囲第 1又は第 2項に記載の液封入式防振装置。 Only the periphery of the thin plate member is configured to be embedded in the elastic partition membrane. 3. The liquid-filled type vibration damping device according to claim 1 or 2, wherein
[4] 前記仕切り手段の組み立て状態においては、前記一対の挟持部材の第 2ストツバ 面部が前記弾性仕切り膜の第 2ゴム部を前記仕切り手段の軸心方向へ押圧すること で、その弾性仕切り膜の第 2ゴム部に予圧縮が付与されるように構成されていることを 特徴とする請求の範囲第 1から第 3項のいずれかに記載の液封入式防振装置。  [4] In the assembled state of the partition means, the second stopper surface portion of the pair of clamping members presses the second rubber portion of the elastic partition film in the axial direction of the partition means, so that the elastic partition film The liquid-filled vibration isolator according to any one of claims 1 to 3, wherein pre-compression is applied to the second rubber part.
[5] 前記一対の挟持部材を熱可塑性の榭脂材料から構成し、互 ヽの接合面を溶着手 段により溶着することで、前記仕切り手段が一体的に構成されていることを特徴とする 請求の範囲第 1から第 4項のいずれかに記載の液封入式防振装置。  [5] The pair of clamping members are made of a thermoplastic resin material, and the partitioning means are integrally configured by welding the joint surfaces of the pair by a welding means. The liquid-filled vibration isolator according to any one of claims 1 to 4.
[6] 前記一対の挟持部材は、一方の接合面から突設される凸設部と、他方の接合面に 凹設され前記凸設部を受け入れ可能な凹設部とを備え、前記仕切り手段の軸心方 向で嵌合可能に構成されると共に、それら凸設部と凹設部とは、前記仕切り手段の 組み立て状態において、前記凸設部の頂部と前記凹設部の底部とが当接するように 凸設高さと凹設深さとがそれぞれ設定されていることを特徴とする請求の範囲第 5項 記載の液封入式防振装置。  [6] The pair of clamping members includes a projecting portion projecting from one joint surface and a recessed portion recessed in the other joint surface and receiving the projecting portion, and the partitioning means The projecting portion and the recessed portion are configured so that the top portion of the projecting portion and the bottom portion of the recessed portion are in contact with each other in the assembled state of the partition means. 6. The liquid-filled vibration isolator according to claim 5, wherein a projecting height and a recessed depth are set so as to contact each other.
[7] 請求の範囲第 1から第 6項のいずれかに記載の液封入式防振装置と、その液封入 式防振装置を前記振動発生体側に連結する振動発生体側ブラケットとを備えた液封 入式防振装置ユニットにおいて、  [7] A liquid comprising the liquid-filled vibration isolator according to any one of claims 1 to 6 and a vibration generator-side bracket that connects the liquid-filled vibration isolator to the vibration generator side. In the sealed vibration isolator unit,
前記第 2取付け具は、小径筒部と、その小径筒部よりも大径に形成される大径筒部 と、その大径筒部と前記小径筒部とを連結する段差部とを備えると共に、前記大径筒 部が前記振動発生体側ブラケットの内周部へ内嵌圧入されるものであり、  The second fixture includes a small-diameter cylindrical portion, a large-diameter cylindrical portion formed larger in diameter than the small-diameter cylindrical portion, and a stepped portion connecting the large-diameter cylindrical portion and the small-diameter cylindrical portion. The large-diameter cylindrical portion is press-fitted into the inner peripheral portion of the vibration generator-side bracket,
前記振動発生体側ブラケットの内周部には、その内周部に内嵌圧入された前記第 2取付け具の段差部に当接可能な当接部が径方向内方側に張り出して形成されて Vヽることを特徴とする液封入式防振装置ユニット。  On the inner peripheral portion of the vibration generator side bracket, a contact portion capable of contacting the stepped portion of the second fixture fitted and fitted into the inner peripheral portion is formed to project radially inward. A liquid-filled vibration isolator unit characterized by V
[8] 前記第 2取付け具は、前記大径筒部が前記小径筒部よりも前記第 1取付け具側に 位置すると共に、その大径筒部を前記振動発生体側ブラケットの内周部に内嵌圧入 するものであり、  [8] In the second fixture, the large-diameter cylindrical portion is positioned closer to the first fixture than the small-diameter cylindrical portion, and the large-diameter cylindrical portion is disposed in the inner peripheral portion of the vibration generator-side bracket. Fit and press fit,
その内嵌圧入状態では、前記第 2取付け具の段差部が前記振動発生体側ブラケッ トの当接部よりも前記第 1取付け具側に位置するように構成されていることを特徴とす る請求の範囲第 7項記載の液封入式防振装置ユニット。 In the press-fitted state, the step portion of the second fixture is configured to be positioned closer to the first fixture than the contact portion of the vibration generator side bracket. The liquid-filled vibration isolator unit according to claim 7.
PCT/JP2004/017045 2004-11-17 2004-11-17 Liquid-sealed vibration damping device and liquid-sealed vibration damping device unit WO2006054336A1 (en)

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PCT/JP2004/017045 WO2006054336A1 (en) 2004-11-17 2004-11-17 Liquid-sealed vibration damping device and liquid-sealed vibration damping device unit

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008202765A (en) * 2007-02-22 2008-09-04 Toyo Tire & Rubber Co Ltd Liquid-sealed vibration control device
JP2009144844A (en) * 2007-12-14 2009-07-02 Bridgestone Corp Vibration control device
WO2009109261A1 (en) * 2008-03-04 2009-09-11 Anvis Deutschland Gmbh Device for elastically mounting an engine transmission unit

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Publication number Priority date Publication date Assignee Title
JPS63145036U (en) * 1987-03-13 1988-09-26
JPH0577642U (en) * 1992-03-19 1993-10-22 東海ゴム工業株式会社 Fluid-filled mounting device
JPH10311363A (en) * 1997-05-07 1998-11-24 Bridgestone Corp Vibration isolating device
JP2002206587A (en) * 2001-01-10 2002-07-26 Toyo Tire & Rubber Co Ltd Liquid sealing type vibration control device
JP2003329079A (en) * 2002-05-14 2003-11-19 Toyo Tire & Rubber Co Ltd Facilities for assembling liquid filled vibration isolating mount

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63145036U (en) * 1987-03-13 1988-09-26
JPH0577642U (en) * 1992-03-19 1993-10-22 東海ゴム工業株式会社 Fluid-filled mounting device
JPH10311363A (en) * 1997-05-07 1998-11-24 Bridgestone Corp Vibration isolating device
JP2002206587A (en) * 2001-01-10 2002-07-26 Toyo Tire & Rubber Co Ltd Liquid sealing type vibration control device
JP2003329079A (en) * 2002-05-14 2003-11-19 Toyo Tire & Rubber Co Ltd Facilities for assembling liquid filled vibration isolating mount

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008202765A (en) * 2007-02-22 2008-09-04 Toyo Tire & Rubber Co Ltd Liquid-sealed vibration control device
JP2009144844A (en) * 2007-12-14 2009-07-02 Bridgestone Corp Vibration control device
WO2009109261A1 (en) * 2008-03-04 2009-09-11 Anvis Deutschland Gmbh Device for elastically mounting an engine transmission unit
US8376330B2 (en) 2008-03-04 2013-02-19 Anvis Deutschland Gmbh Apparatus for elastically supporting an engine transmission unit

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