WO2010137585A1 - Antivibration device - Google Patents

Antivibration device Download PDF

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Publication number
WO2010137585A1
WO2010137585A1 PCT/JP2010/058821 JP2010058821W WO2010137585A1 WO 2010137585 A1 WO2010137585 A1 WO 2010137585A1 JP 2010058821 W JP2010058821 W JP 2010058821W WO 2010137585 A1 WO2010137585 A1 WO 2010137585A1
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WO
WIPO (PCT)
Prior art keywords
vibration
plate
vibration isolator
fixing portion
fixing
Prior art date
Application number
PCT/JP2010/058821
Other languages
French (fr)
Japanese (ja)
Inventor
達也 小堀
敦洋 藤原
Original Assignee
株式会社ブリヂストン
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 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to JP2011516023A priority Critical patent/JPWO2010137585A1/en
Publication of WO2010137585A1 publication Critical patent/WO2010137585A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
    • F16F1/3735—Multi-part grommet-type resilient mountings

Definitions

  • the present invention relates to a vibration isolator that is used as an engine mount or the like in a general industrial machine or automobile, and absorbs and attenuates vibration transmitted from a vibration generating unit such as an engine to a vibration receiving unit such as a vehicle body.
  • an anti-vibration device as an engine mount is disposed between an engine that is a vibration generation unit of a vehicle and a vehicle body that is a vibration receiving unit, and the anti-vibration device absorbs vibration generated from the engine. Suppresses vibration transmission to the vehicle body.
  • the inner cylinder part fixed to the first fixing part connected to any one of the vibration generator and the vibration receiver, and disposed on the outer peripheral part of the inner cylinder part,
  • An outer cylinder part fixed to a second fixing part connected to one of the vibration generator and the vibration receiver, an inner cylinder part, and an elastic part arranged between the outer cylinder part See Patent Document 1: Japanese Patent Application Laid-Open No. 2004-301196).
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2006-300107
  • a stopper rubber made of a rubber material having a hardness higher than that of the elastic body is provided as a restricting portion for restricting excessive deformation of the elastic portion, and the outer peripheral side of the elastic portion.
  • a vibration isolator has been proposed that is fixed to the flange portion of the outer cylinder portion by vulcanization adhesion and is opposed to the first fixed portion with a gap (clearance) having a predetermined width.
  • the stopper rubber is fixed on the flange portion of the outer cylinder portion by vulcanization and integrated with the vibration isolator.
  • the input amount of vibration from the vehicle changes, it is difficult to adjust the clearance between the stopper rubber and the plate member by removing the stopper rubber in accordance with the change.
  • the vibration isolator described in Patent Document 2 cannot be applied depending on the type of vehicle, and lacks versatility.
  • some types of vehicles do not require a restriction portion such as a stopper rubber, and a vibration isolator that is difficult to remove the restriction portion is less versatile.
  • This invention considers the said fact and aims at providing the vibration isolator which can adjust the clearance of a control part easily, without being restricted by the dimension and shape of an elastic part.
  • An antivibration device includes an inner cylinder portion fixed to a first fixing portion connected to one of a vibration generator and a vibration receiver, and an outer peripheral portion of the inner cylinder portion.
  • An outer cylinder part fixed to a second fixing part connected to one of the vibration generator and the vibration receiver, and arranged between the inner cylinder part and the outer cylinder part.
  • the elastic part, the outer cylinder part and the second fixing part are sandwiched and attached detachably, extend toward the first fixing part, and contact the first fixing part to deform the elastic part.
  • a regulation unit that regulates.
  • the restricting portion that restricts the deformation of the elastic portion is detachably attached, when adjusting the clearance between the restricting portion and the first fixing portion, the restricting portion is removed from the vibration isolator. It is possible to remove and change the size and shape of the restricting portion and attach it to the vibration isolator again. Therefore, the clearance adjustment between the restricting portion and the first fixing portion can be easily performed without being limited by the size and shape of the elastic portion disposed between the inner cylinder portion and the outer cylinder portion. Furthermore, since the restricting portion is attached by being sandwiched between the outer cylinder portion and the second fixing portion, it can be applied to an existing vibration isolator that does not have the restricting portion.
  • the restricting portion is separate from the elastic portion and the outer cylinder portion, even if the restricting portion is damaged by contact with the first fixed portion due to a large input load, only the restricting portion is removed.
  • the vibration isolator can be used again by replacing it.
  • the load is not directly transmitted to the outer cylinder part even if a large load is applied to the restricting part, damage to the outer cylinder part can be prevented.
  • the axial ends of the inner cylindrical portion are respectively connected to the first fixing portion and the first fixing portion, or separately from the first fixing portion.
  • the restriction portion extends from both sides of the second fixing portion toward the first fixing portion and the third fixing portion, and the first fixing portion and the third fixing portion are fixed to the third fixing portion.
  • the extension portion extends not only to the first fixing portion but also to the third fixing portion, and faces the third fixing portion with a gap therebetween.
  • deformation of the elastic portion can be restricted on both the compression side and the tension side.
  • the extension portion is formed so as to sandwich the elastic portion in the width direction. According to the invention described in the third aspect, since the extending portion is formed so as to sandwich the elastic portion in the width direction, deformation of the elastic portion in the axial direction can be restricted.
  • the restricting portion includes a plate portion sandwiched between the outer cylinder portion and the second fixing portion, and the extending portion is a rubber fixed to the plate portion. Or it is the laminated body which laminated
  • the restricting portion is securely attached.
  • the extending portion is a laminated body in which rubber or rubber and a plate are laminated, it is possible to adjust the rise of the load-deflection characteristic when the extending portion hits the first fixing portion or the third fixing portion. Thereby, the impact at the time of extension part contact can be relieved. Moreover, the abnormal noise generated at the time of the contact can be reduced.
  • the first fixing portion or the third fixing portion includes a first surrounding portion that surrounds the outer surface of the restricting portion with a gap. According to the invention described in the fifth aspect, when the radial load is input from the first fixed portion or the second fixed portion to the elastic portion, the restricting portion hits the first surrounding portion, so that the elastic portion Radial deformation can be restricted.
  • the vibration isolator which concerns on the 6th aspect of this invention is connected to the said extension part, and is provided with the 2nd surrounding part which surrounds the outer surface of the said 1st fixing part or the said 3rd fixing part with a clearance gap.
  • the second surrounding portion becomes the first fixing portion or the third fixing portion.
  • the axial deformation and the radial deformation of the elastic portion can be restricted by merely providing the second enclosing portion in the restricting portion, other members of the vibration isolator can be used when changing the restricting direction. It is possible to omit the time for replacing or processing.
  • the outer tube portion includes a tube portion and a flange portion extending radially outward from an end portion of the tube portion, and a joint portion between the tube portion and the flange portion.
  • the end of the restricting portion that is sandwiched between the flange portion and the second fixing portion and contacts the joint portion is chamfered.
  • the end portion of the restricting portion that is sandwiched between the flange portion and the second fixing portion and contacts the joint portion is chamfered. For this reason, a flange part and a control part contact reliably, and a control part can be pinched
  • FIG. 1 is a side sectional view of a vibration isolator 10 according to a first embodiment of the present invention.
  • the vibration isolator 10 is applied, for example, as an engine mount that supports an engine that is a vibration generating unit in an automobile to a vehicle body that is a vibration receiving unit.
  • the anti-vibration device 10 includes a pair of anti-vibration rubbers 12 having the same structure and shape, and the pair of anti-vibration rubbers 12 have a symmetrical positional relationship with each other along the axial direction. Has been placed.
  • the pair of anti-vibration rubbers 12 includes an inner cylinder part 14, an outer cylinder part 16, and an elastic part 18 that are each formed in a cylindrical shape and are arranged around a common axis O.
  • the other anti-vibration rubber 12 side along the axis O direction in one anti-vibration rubber 12 of the pair of anti-vibration rubbers 12 is referred to as the inner side in the axis O direction, and the one anti-vibration rubber 12 along the axis O direction.
  • the opposite side of the other anti-vibration rubber is referred to as the outside in the direction of the axis O.
  • the inner cylinder portion 14 has a pair of metallic inner cylinders 14A formed in a cylindrical shape along the axis O direction, and the inner end portions in the axis O direction of the pair of inner cylinders 14A are abutted with each other.
  • the outer cylinder portion 16 is disposed on the outer peripheral portion of the inner cylinder portion 14.
  • This outer cylinder part 16 has a pair of metal outer cylinders 16A formed in a cylindrical shape shorter than the inner cylinder 14 along the axis O direction, and the inner end parts in the axis O direction of the pair of outer cylinders 16A are connected to each other. It is the structure which faced each other.
  • Each of the pair of outer cylinders 16A is provided with a cylindrical portion 20 formed in a cylindrical shape that is flat in the direction of the axis O on the inner peripheral side, and an outer end portion (outer end portion) of the cylindrical portion 20 in the axis O direction.
  • An annular flange portion 22 extending from the outer periphery to the outer peripheral side is integrally formed.
  • the inner cylinder 14A protrudes from the inside of the cylinder portion 20 to the outside in the axis O direction.
  • the elastic portion 18 has a pair of main body rubbers 18A formed in a substantially thick cylindrical shape along the axis O direction, and the inner end portions in the axis O direction of the pair of main body rubbers 18A face each other.
  • Each of the pair of main body rubbers 18A is vulcanized and bonded to an area where the inner end portion of the outer peripheral surface extends from the inner peripheral surface of the cylindrical portion 20 to the boundary portion between the cylindrical portion 20 and the flange portion 22, and the entire inner peripheral surface. Is vulcanized and bonded to the outer peripheral surface of the inner cylinder 14A. Thereby, the inner cylinder 14A and the outer cylinder 16A are elastically connected by the main body rubber 18A.
  • FIG. 2A is a plan view of the anti-vibration rubber 12 in the anti-vibration device 10 shown in FIG. 2B is a side sectional view of the vibration isolating rubber 12 in the vibration isolating apparatus 10 shown in FIG.
  • the entire end surface on the inner side in the axis O direction of the main body rubber 18A is a recess 24 that is recessed in a concave shape so as to have a semicircular cross section.
  • a groove 26 having a substantially V-shaped cross section along the outer peripheral surface of the inner cylinder 14A is formed on the outer end surface of the main body rubber 18A along the outer periphery of the inner cylinder 14A (see FIG. 2A).
  • An inclined surface 28 is formed which is inclined from the outer peripheral portion toward the outer peripheral side inward in the axis O direction (lower side in FIG. 2B).
  • the main rubber 18A is formed from a rubber material such as NR or NBR, and specifically, vulcanized (molded) using the inner cylinder 14A and the outer cylinder 16A as insert cores. At the same time as vulcanization molding, the outer peripheral surface of the outer cylinder 16A, the outer peripheral surface of the inner cylinder 14A, and the flange 22 are vulcanized and bonded.
  • a rubber material such as NR or NBR
  • the pair of anti-vibration rubbers 12 having the above-described configuration is provided as first and third fixing parts respectively disposed on the outer side in the axis O direction of the pair of main body rubbers 18A by the fastening members 30 inserted into the inner cylinder part 14.
  • the pair of plate members 32 and 34 are pushed inward in the direction of the axis O, so that the plate members 32 and 34 are sandwiched from both sides in the direction of the axis O.
  • the inner cylinder portion 14 constituting the pair of vibration isolating rubbers 12 is fixed to the plate members 32 and 34 at both ends in the axis O direction, that is, the outer end surfaces in the axis O direction of the pair of inner cylinders 14A.
  • the fastening member 30 includes a bolt 36, a washer 37, and a nut 38.
  • the bolt 36 is inserted into the bolt hole 40 of the plate member 32 from the outer side in the axis O direction of the one plate member 32, and is inserted through the bolt hole 42 of the inner cylinder portion 14 and the other plate member 34, respectively.
  • the plate member 34 protrudes outward in the axis O direction.
  • a nut 38 is screwed and tightened to a front end portion of the bolt 36 protruding from the bolt hole 42 of the other plate member 34 via a washer 37.
  • the plate members 32 and 34 into which the fastening member 30 is inserted are plate members that sandwich the pair of vibration-proof rubbers 12 from both sides in the axis O direction. At least one of the plate members 32 and 34 is connected to one of an engine (not shown) and the vehicle body. Further, a bracket member 44 as a second fixing portion formed in a thick plate shape is connected to either the engine or the vehicle body. The bracket member 44 is formed with a circular opening 46 having a diameter corresponding to the outer diameter of the pair of cylindrical portions 20 constituting the outer cylindrical portion 16.
  • the outer cylinder part 16 which comprises a pair of anti-vibration rubber
  • the stopper plate 48 serving as a restricting portion that restricts deformation of the elastic portion 18 in the axis O direction is sandwiched and prevented by one of the pair of flange portions 22 and the bracket member 44. Removably attached to the vibration device 10.
  • FIG. 3A is a schematic perspective view of the stopper plate 48 attached to the vibration isolator 10 according to the first embodiment of the present invention.
  • FIG. 3B is a cross-sectional view of the stopper plate 48 attached to the vibration isolator 10 according to the first embodiment of the present invention.
  • the stopper plate 48 is a ring plate that is disposed coaxially with the axis O, with the front and back surfaces sandwiched between one of the flange portions 22 and the bracket member 44.
  • Part 50 is provided.
  • a circular opening 52 having a diameter corresponding to the outer diameter of the pair of inner cylinders 20 constituting the outer cylinder part 16 is formed in the center of the ring plate part 50.
  • the outer peripheral portion of the ring plate portion 50 is bent along the axis O direction to form an extension portion 54.
  • the extending portion 54 is formed in a cylindrical shape surrounding any one of the pair of main body rubbers 18A with a gap therebetween, and is parallel to the axis O direction from the entire outer peripheral edge portion of the ring plate portion 50 toward the plate member 32. It extends straight so that it becomes.
  • FIG. 4 is a diagram illustrating a state before the vibration isolator 10 according to the first embodiment of the present invention is assembled.
  • the outer cylinder 16A of one anti-vibration rubber 12 is inserted into the opening 52 of the ring plate part 50 from the extension part 54 side of the stopper plate 48, and the opening part 46 from one side of the bracket member 44 in the axis O direction. Insert inside. Further, the outer cylinder 16A of the other anti-vibration rubber 12 is inserted into the opening 46 from the other side in the axis O direction.
  • the peripheral portions of the opening 46 on the front and back surfaces of the bracket member 44 are sandwiched by the flange portions 22 of the antivibration rubber 12 from both sides in the axis O direction. Further, the ring plate portion 50 of the stopper plate 48 is sandwiched between the front and back surfaces of either one of the pair of flange portions 22 and the bracket member 44, so that the stopper plate 48 is one of the anti-vibration rubber 12. It is attached to (anti-vibration device 10).
  • the pair of plate members 32 and 34 are respectively disposed on the end surfaces of the pair of anti-vibration rubbers 12 in the axial O direction, that is, on the outer end surface of the elastic portion 18 and on both end surfaces of the inner cylinder portion 14 in the axial O direction. To do.
  • the bolt 36 is inserted into the bolt hole 40 of one plate member 32, the inner peripheral side of the inner cylinder portion 14, and the bolt hole 42 of the other plate member 34 from the outside in the axis O direction, and protrudes from the bolt hole 42.
  • a nut 38 is screwed into a tip end portion of the bolt 36 through a washer 37.
  • the nut 38 is screwed into the bolt 36 until one end portions of the inner cylinder 14A of the pair of vibration-proof rubbers 12 are in pressure contact with each other.
  • the elastic portions 18 in the pair of vibration isolating rubbers 12 are respectively compressed by a predetermined preliminary compression amount (PC shown in FIG. 2B) in the direction of the axis O, and required for an input load along the direction of the axis O. It will be in the state where repulsive force can be generated.
  • the restoring force (repulsive force) against the load by the elastic portion 18 can be increased as the preliminary compression amount of the elastic portion 18 is increased.
  • the inner cylinder section 14 in the pair of vibration isolating rubbers 12 is sandwiched between the pair of plate members 32 and 34.
  • the outer cylindrical portion 16 of the pair of vibration isolating rubbers 12 is fixed to the bracket member 44 with the bracket member 44 sandwiched between the pair of flange portions 22.
  • vibration along the axis O direction (vertical direction in the present embodiment) is input via the bracket member 44 from an engine that is a vibration generating unit. Then, the main rubber 18A in the pair of vibration-proof rubbers 12 is elastically deformed along the axis O direction.
  • the main rubber 18A of the one anti-vibration rubber 12 and the main rubber 18A of the other anti-vibration rubber 12 are elastically deformed in directions opposite to each other along the axis O direction (one is the compression direction and the other is the tension direction).
  • the input vibration along the vertical direction is attenuated and absorbed by the internal friction of the main body rubber 18A of the vibration-proof rubber 12.
  • the anti-vibration rubber 12 since the anti-vibration rubber 12 has an inclined surface 28 on the outer peripheral side of the end face on the outer side in the axis O direction, the body rubber 18A deformed in the compression direction increases as the amount of deformation increases. As the contact area increases, the portion deformed by the input load is expanded to the outer peripheral side. Thereby, the anti-vibration rubber 12 exhibits a non-linear characteristic such that the rate of increase of the repulsive force acting on the plate member 32 is gradually increased as the amount of deformation thereof increases.
  • the vibration isolator 10 when vibration along a direction orthogonal to the axis O direction (in this embodiment, the horizontal direction) is input from the engine via the bracket member 44, the main rubber in the pair of vibration isolating rubbers 12. 18A elastically deforms along the horizontal direction, and the input vibration along the horizontal direction is also damped and absorbed by the internal friction of the main rubber 18A.
  • the stopper plate 48 attached to the vibration isolator 10 with the pair of main body rubbers 18A being compressed by a predetermined preliminary compression amount PC (see FIG. 2B).
  • a gap (clearance) S having a predetermined width is formed along the axis O direction between the stopper surface 56 and the plate member 32.
  • FIG. 5 shows a state when an excessive load is input along the axis O direction to the vibration isolator 10 through one of the plate member 32 and the bracket member 44.
  • an excessive load is input to the vibration isolator 10
  • one (upper in FIG. 5) body rubber 18A is elastically deformed in the compression direction and the other pre-compressed (lower in FIG. 5) main body rubber 18A. Is restored in the tensile direction.
  • the stopper surface 56 of the stopper plate 48 disposed on the outer peripheral side of the main body rubber 18A comes into pressure contact with the plate member 32. Accordingly, the stopper plate 48 applies a repulsive force to the plate member 32, and the deformation of the main rubber 18A is limited by the repulsive force.
  • the gap between the stopper surface 56 of the stopper plate 48 and the plate member 32 is adjusted accordingly. It is necessary to adjust the clearance S.
  • the vibration isolator 10 of the first embodiment of the present invention since the stopper plate 48 is only sandwiched between the flange portion 22 and the bracket member 44, the assembly method described above If the vibration isolator 10 is disassembled in the reverse procedure, the stopper plate 48 can be removed.
  • the stopper plate 48 If the stopper plate 48 is detachable, the stopper plate 48 can be removed from the vibration isolator 10, and then the dimension and shape of the stopper plate 48 can be changed and attached to the vibration isolator 10 again. Therefore, the clearance between the stopper plate 48 and the plate member 32 can be easily adjusted without being limited by the size and shape of the elastic portion 18 disposed between the inner cylinder portion 14 and the outer cylinder portion 16.
  • the stopper plate 48 since the stopper plate 48 is attached by being sandwiched between the outer cylinder portion 16 and the bracket member 44, the stopper plate 48 can be applied to an existing vibration isolator that does not have the restricting portion of the elastic portion 18. Furthermore, since the extending portion 54 of the stopper plate 48 is formed in a cylindrical shape, the deformation of the elastic portion 18 in the axial direction can be uniformly regulated over the entire circumference.
  • the stopper plate 48 is securely attached to the vibration isolator 10. Further, since the stopper plate 48 is separate from the elastic portion 18 and the outer cylinder portion 16, even if the stopper plate 48 is damaged by contact with the plate member 32 due to a large input load, the stopper plate 48 The vibration isolator 10 can be used again by exchanging only 48. Furthermore, even if a large load is applied to the stopper plate 48 for the separate body, the load is not directly transmitted to the outer cylinder part 16, so that the outer cylinder part 16 can be prevented from being damaged. (Second Embodiment) Next, a second embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • FIG. 6 is a schematic cross-sectional view of a vibration isolator 60 according to the second embodiment of the present invention.
  • the vibration isolator 60 according to the second embodiment has a configuration in which another stopper plate 62 having the same shape as the stopper plate 48 is attached to the configuration of the first embodiment.
  • the ring plate portion 64 of the stopper plate 62 is sandwiched between the bracket member 44 and the flange portion 22 that does not sandwich the stopper plate 48 among the pair of flange portions 22 of the outer cylinder portion 16A, and the stopper plate 62 is connected to the stopper plate 48.
  • the extension portion 66 of the stopper plate 62 extends straight from the entire outer peripheral edge portion of the ring plate portion 64 toward the plate member 34 so as to be parallel to the axis O direction, and faces the plate member 34 with a gap S therebetween. is doing.
  • the extension portion 54 of the stopper plate 48 extends toward the plate member 32, faces the plate member 32 with a gap therebetween, and the stopper plate Since the extending portion 66 of 62 extends toward the plate member 34 and faces the plate member 34 with a gap, a load in the axis O direction is applied from the plate members 32 and 34 or the bracket member 44 to the elastic portion 18.
  • the deformation of the elastic portion 18 can be restricted on both the compression side and the tension side.
  • FIG. 7 is a schematic cross-sectional view of a vibration isolator 70 according to the third embodiment of the present invention.
  • the joint portion 72 of the cylindrical portion 20 and the flange portion 22 of each of the pair of outer cylinders 16A has an R shape.
  • the edge part of the stopper plate 74 attached similarly to 1st Embodiment is chamfered corresponding to this R shape.
  • the end portion 78 of the ring plate portion 76 constituting the stopper plate 74 that is, the edge portion of the opening 80 is chamfered corresponding to the R shape of the joint portion 72. .
  • the end portion 78 of the stopper plate 74 that is sandwiched between the flange portion 22 and the bracket member 44 and contacts the joint portion 72 of the outer cylinder 16A is chamfered. Therefore, the flange portion 22 and the stopper plate 74 are in reliable contact, and the stopper plate 74 can be firmly sandwiched between the flange portion 22 and the bracket member 44. Further, since the stopper plate 74 is disposed between the flange portion 22 and the bracket member 44, the bracket member 44 does not contact the joint portion 72 of the outer cylinder 16A. For this reason, it is not necessary to chamfer the bracket member 44 corresponding to the R shape of the joint portion 72.
  • the bracket member 44 is processed to ensure a space for disposing the stopper plate 74 between the flange portion 22 and the bracket member 44. However, this processing may be omitted and the stopper plate 74 may be disposed as it is between the flange portion 22 and the bracket member 44.
  • the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • FIG. 9 is a schematic cross-sectional view of a vibration isolator 80 according to the fourth embodiment of the present invention.
  • the vibration isolator 80 according to the fourth embodiment uses a bowl-shaped plate member 82 instead of the plate member 32 in the configuration of the third embodiment.
  • the plate member 82 includes a plate body 84 extending in a direction orthogonal to the direction of the axis O and a first surrounding portion 86.
  • the first surrounding portion 86 is a cylindrical member that is provided on the entire outer peripheral edge of the plate body 84 and extends from the plate body 84 toward the bracket member 44.
  • the first surrounding portion 86 surrounds the outer surface of the stopper plate 48, that is, the outer peripheral surface of the extending portion 54 with a gap T (clearance) having a predetermined width.
  • FIG. 10 shows a state when an excessive load is input to the vibration isolator 80 through the plate members 34 and 82 or the bracket member 44 in the direction orthogonal to the axis O direction, that is, along the radial direction. Yes.
  • an excessive load is input to the vibration isolator 80 in the radial direction P (right side in FIG. 10) as shown in FIG. 10
  • the left elastic portion 18 is elastically deformed in the compression direction and the right elastic portion 18 is elastically deformed in the tensile direction.
  • the outer peripheral surface of the stopper plate 48 disposed on the outer peripheral side of the elastic portion 18 comes into pressure contact with the first surrounding portion 86. Accordingly, the stopper plate 48 applies a repulsive force to the first surrounding portion 86, and the deformation of the elastic portion 18 is limited by the repulsive force.
  • FIG. 11 is a schematic cross-sectional view of a vibration isolator 90 according to the fifth embodiment of the present invention.
  • the vibration isolator 90 according to the fifth embodiment of the present invention uses a stopper plate 94 having a cylindrical second surrounding portion 92 instead of the stopper plate 74 in the configuration of the third embodiment.
  • the second surrounding portion 92 is connected to the extending portion 54 of the stopper plate 94, and the outer surface 96 in a direction perpendicular to the direction of the axis O of the plate member 32 has a predetermined width.
  • a gap T (clearance) is surrounded.
  • the vibration isolator 90 when the radial load is input from the plate member 32 to the elastic portion 18, the second surrounding portion Since 92 hits the outer surface 96 of the plate member 32, the deformation of the elastic portion 18 in the radial direction can be restricted. Further, since the stopper plate 94 is provided with the second surrounding portion 92 on the stopper plate 74, other members of the vibration isolator 10, the plate members 32, 34, and the like are replaced or processed when the regulation direction is changed. Time can be omitted.
  • the present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the gist of the present invention.
  • the restricting portion of the elastic portion 18 according to the present invention is not limited to the structure of the stopper plates 48, 62, 74, 94 described above, and may have a structure as shown in FIGS. 12A to 12E, for example. good.
  • FIG. 12A shows a structure in which the restricting portion 100 includes a ring plate portion 102 and a cylindrical extending portion 104 made of rubber fixed to the ring plate portion 102.
  • FIG. 12B shows a structure in which the restricting portion 110 has a ring plate portion 112 and a cylindrical extending portion 118 made of a rubber 114 and a plate 116 fixed to the ring plate portion 112.
  • FIG. 12C shows a structure in which the restricting portion 120 includes a ring plate portion 122 and a cylindrical extending portion 128 made of a laminated body in which a rubber 124 and a plate 126 are laminated.
  • FIG. 12D shows a structure in which the restricting portion 130 has a ring plate portion 132 and an extending portion 140.
  • the extending portion 140 includes a first extending member 134 formed by bending an outer peripheral portion of the ring plate portion 132 along the axis O direction, and a first extending member 134 (in FIG. 12). ) The second extending member 136 formed by bending the upper end portion in a direction perpendicular to the axis O (horizontal direction), and the rubber surrounding the first extending member 134 and the second extending member 136 138.
  • FIG. 12E shows a structure in which the restricting portion 150 includes a ring plate portion 152 and an extending portion 158.
  • the extending portion 158 includes an extending member 154 formed by bending the outer peripheral portion of the ring plate portion 152 along the axis O direction, and a rubber 156 surrounding the extending member 154.
  • the restricting portion of the elastic portion 18 has the structure shown in FIGS. 12A to 12E, the load when the extending portions 104, 118, 128, 140, 158 hit the plate members 32, 34, etc.- The rise of the deflection characteristics can be adjusted. Thereby, the impact at the time of the extension part 104,118,128,140,158 contact can be relieved. Moreover, the abnormal noise generated at the time of the contact can be reduced.
  • the configuration in which the extending portion 54 is provided on the entire outer peripheral edge portion of the ring plate portion 50 of the stopper plate 48 has been described.
  • the outer peripheral edge portion of the ring plate portion 50 of the stopper plate 48 is described.
  • a configuration in which the extending portion 54 is provided in a part of the portion may be used.
  • a lattice-shaped thing and a fence-like thing are mentioned.
  • the ring plate portion 50 can also have the same shape.
  • only a part of the bottom plate portion of the stopper plate 48 may have a ring shape.
  • the shape of the extending portion 54 of the stopper plate 48 is cylindrical, but the extending portion of the regulating portion according to the present invention is a square according to the shape of the vibration isolator.
  • the shape can be changed as appropriate, such as a cylindrical shape or a triangular cylindrical shape.
  • the extension part 54 may not be cylindrical, but may be formed so as to sandwich the elastic part 18 in the width direction. Specifically, as shown in FIGS.
  • a stopper plate 160 having a plate portion 162 in which two predetermined opposite sides are ring-shaped and the other two opposite sides are linear, the ring of the plate portion 162
  • a space required for arranging the stopper plate 160 can be reduced, and the material cost of the stopper plate 160 can be reduced.
  • the elastic member 18 is sandwiched between the outer cylinder portion 16 and the bracket member 44 as the second fixing member, and serves as the plate member 32 as the first fixing portion or the third fixing portion.
  • the restricting portion includes, for example, a member of a restricting portion sandwiched between the outer cylinder portion 16 and the bracket member 44, and the plate member 32. Or the structure provided with two or more members extended toward the plate member 34 may be sufficient.
  • the inner cylinder part 14, the outer cylinder part 16, and the elastic part 18 are each composed of a pair of inner cylinder, outer cylinder, and main body rubber, or each of three or more inner cylinders, outer cylinders, and main body rubber. It may be a configuration.
  • the configuration in which the stopper plate 48 as the restricting portion is sandwiched between the flange portion 22 and the bracket member 44 of the outer cylinder 16A has been described.
  • the restricting portion according to the present invention includes the outer cylinder portion. 16 and the bracket member 44 may be used, and for example, a configuration sandwiched between the outer peripheral surface of the cylindrical portion 20 of the outer cylindrical portion 16 and the bracket member 44 may be used.
  • the 1st surrounding part and 2nd surrounding part which concern on this invention are the following.
  • the shape of the anti-vibration device in particular, a rectangular tube shape, a triangular tube shape, or the like can be appropriately changed in accordance with the shape of the restriction portion.
  • the 1st surrounding part and 2nd surrounding part which concern on this invention may be a grid
  • the vibration isolator can also be configured by appropriately combining the configurations of the first to fifth embodiments.
  • each of the pair of stopper plates 48 and 62 of the vibration isolator 60 of the second embodiment is configured in the third embodiment. It is also possible to apply the chamfer according to the form and the second surrounding portion according to the fifth embodiment. Further, the first surrounding portion 86 of the plate member 32 described in the fourth embodiment can be provided in the plate member 34. Furthermore, even when the elastic portion 28 is provided with a restricting portion (stopper rubber), the configurations of the first to fifth embodiments can be applied.
  • the anti-vibration device having the one provided on the elastic portion 28 as the restricting portion (stopper rubber) and the one provided separately from the elastic portion 28 (stopper plate) can be used as the stopper.
  • the load-deflection characteristic of the vibration isolator can be adjusted more than the vibration isolator having only rubber.
  • Vibration isolator 14 Inner cylinder part 16 Outer cylinder part 18 Elastic part 22 Flange parts 32, 34, 82 Plate member (first fixing part, third fixing part) 44 Bracket member (second fixing part) 48, 62, 74, 94 Stopper plate (Regulator) 50, 64, 76, 112, 102, 122, 132, 152, 162 Plate part 54, 66, 104, 118, 128, 140, 158, 164 Extension part 72 Joint part 100, 110, 120, 130, 150 Restriction Portion 114, 124, 138, 156 Rubber 116, 126 Plate O Axis S, T Clearance

Abstract

Disclosed is an antivibration device wherein the clearance of a regulating part can be easily adjusted regardless of the size and shape of an elastic part. Said antivibration device is provided with: an internal cylindrical part (14) that is affixed to plate members (32, 34) attached to either a vibration-causing body or a vibration-receiving body; an external cylindrical part (16) that is disposed around the periphery of the internal cylindrical part (14) and is affixed to a bracket member (44) attached to whichever of the vibration-causing body and the vibration-receiving body that the plate members are not attached to; an elastic part (18) disposed between the internal cylindrical part (14) and the external cylindrical part (16); and a stopper plate (48) that is removably attached between the external cylindrical part (16) and the bracket member (44), extends toward one of the plate members (32, 34), and abuts said plate member (32, 34), thereby regulating deformation of the elastic part (18).

Description

防振装置Vibration isolator
　本発明は、一般産業機械、自動車におけるエンジンマウント等として用いられ、エンジン等の振動発生部から車体等の振動受部へ伝達される振動を吸収、及び減衰させる防振装置に関する。 The present invention relates to a vibration isolator that is used as an engine mount or the like in a general industrial machine or automobile, and absorbs and attenuates vibration transmitted from a vibration generating unit such as an engine to a vibration receiving unit such as a vehicle body.
　例えば、車両の振動発生部となるエンジンと振動受部となる車体との間にはエンジンマウントとしての防振装置が配設されており、この防振装置はエンジンから発生される振動を吸収し、車体側への振動伝達を抑制する。 For example, an anti-vibration device as an engine mount is disposed between an engine that is a vibration generation unit of a vehicle and a vehicle body that is a vibration receiving unit, and the anti-vibration device absorbs vibration generated from the engine. Suppresses vibration transmission to the vehicle body.
　このような防振装置としては、振動発生体及び振動受体のうちの何れか一方に連結された第１固定部に固定される内筒部と、前記内筒部の外周部に配置され、前記振動発生体及び前記振動受体のうちの何れか他方に連結された第２固定部に固定される外筒部と、前記内筒部と、前記外筒部の間に配置された弾性部と、備えたものが知られている（特許文献１：特開２００４－３０１１９６号公報参照）。 As such an anti-vibration device, the inner cylinder part fixed to the first fixing part connected to any one of the vibration generator and the vibration receiver, and disposed on the outer peripheral part of the inner cylinder part, An outer cylinder part fixed to a second fixing part connected to one of the vibration generator and the vibration receiver, an inner cylinder part, and an elastic part arranged between the outer cylinder part (See Patent Document 1: Japanese Patent Application Laid-Open No. 2004-301196).
　ところで、上記のような防振装置では、振動発生体又は振動受体から圧縮方向への過大な荷重が入力された場合に、弾性部が過大に変形することを防止する必要がある。
　そこで、特許文献２（特開２００６－３００１０７号公報）には、弾性部の過大な変形を規制する規制部として当該弾性体よりも高硬度のゴム材料からなるストッパーゴムを、弾性部の外周側であって外筒部のフランジ部上に加硫接着により固着して、第１固定部に所定幅の隙間（クリアランス）を空けて対向させた防振装置が提案されている。 By the way, in the vibration isolator as described above, it is necessary to prevent the elastic portion from being excessively deformed when an excessive load in the compression direction is input from the vibration generating body or the vibration receiving body.
Therefore, in Patent Document 2 (Japanese Patent Application Laid-Open No. 2006-300107), a stopper rubber made of a rubber material having a hardness higher than that of the elastic body is provided as a restricting portion for restricting excessive deformation of the elastic portion, and the outer peripheral side of the elastic portion. However, a vibration isolator has been proposed that is fixed to the flange portion of the outer cylinder portion by vulcanization adhesion and is opposed to the first fixed portion with a gap (clearance) having a predetermined width.
　しかしながら、上記特許文献２の構成では、ストッパーゴムが加硫接着により外筒部のフランジ部上に固着されて防振装置と一体となっているため、車両の種類を変更したこと等によりエンジン又は車両からの振動の入力量が変わった場合、これに合わせてストッパーゴムを取り外してストッパーゴムとプレート部材とのクリアランスを調整することは困難である。 However, in the configuration of Patent Document 2 above, the stopper rubber is fixed on the flange portion of the outer cylinder portion by vulcanization and integrated with the vibration isolator. When the input amount of vibration from the vehicle changes, it is difficult to adjust the clearance between the stopper rubber and the plate member by removing the stopper rubber in accordance with the change.
　このように、クリアランスの調整が困難となれば、車両の種類によっては特許文献２に記載の防振装置が適用できなくなり、汎用性に欠ける。また、車両の種類によってはストッパーゴム等の規制部を必要としないものもあり、規制部を取り外し難い防振装置はより汎用性に欠ける。 Thus, if it becomes difficult to adjust the clearance, the vibration isolator described in Patent Document 2 cannot be applied depending on the type of vehicle, and lacks versatility. In addition, some types of vehicles do not require a restriction portion such as a stopper rubber, and a vibration isolator that is difficult to remove the restriction portion is less versatile.
　さらに、上記特許文献２の構成では、ストッパーゴムが弾性部に隣接しているため、クリアランス調整をするためにストッパーゴムの寸法・形状を変更して新たに防振装置を製造する場合、ストッパーゴムの寸法・形状に合わせて弾性部の寸法・形状も変更しなければならない。
　このように、弾性部の寸法・形状を変更すると、弾性部の弾性力及び耐久性等が変化して防振装置の設計を一から見直す必要があるため、好ましくない。 Furthermore, in the configuration of Patent Document 2, since the stopper rubber is adjacent to the elastic portion, when the vibration isolator is newly manufactured by changing the size and shape of the stopper rubber in order to adjust the clearance, the stopper rubber The size and shape of the elastic part must be changed according to the size and shape of the.
Thus, changing the size and shape of the elastic portion is not preferable because the elastic force and durability of the elastic portion change and the design of the vibration isolator needs to be reviewed from the beginning.
　本発明は、上記事実を考慮し、弾性部の寸法・形状にとらわれることなく、容易に規制部のクリアランス調整をすることが可能な防振装置を提供することを目的とする。 This invention considers the said fact and aims at providing the vibration isolator which can adjust the clearance of a control part easily, without being restricted by the dimension and shape of an elastic part.
　本発明の第１態様に係る防振装置は、振動発生体及び振動受体のうちの何れか一方に連結された第１固定部に固定される内筒部と、前記内筒部の外周部に配置され、前記振動発生体及び前記振動受体のうちの何れか他方に連結された第２固定部に固定される外筒部と、前記内筒部と前記外筒部の間に配置された弾性部と、前記外筒部と前記第２固定部に挟まれて取り外し自在に取り付けられると共に前記第１固定部に向かって延出し、前記第１固定部に当ることで前記弾性部の変形を規制する規制部と、を備える。
　第１態様に記載の発明によれば、弾性部の変形を規制する規制部が取り外し自在に取り付けられるため、規制部と第１固定部とのクリアランスを調整する場合、規制部を防振装置から取り外し、この規制部の寸法・形状を変更して再度防振装置に取り付けることができる。したがって、内筒部と外筒部の間に配置された弾性部の寸法・形状にとらわれることなく、容易に規制部と第１固定部とのクリアランス調整をすることができる。
　さらに、規制部が外筒部と第２固定部に挟まれて取り付けられるため、規制部を有していない既存の防振装置に適用が可能となる。
　さらにまた、規制部が弾性部や外筒部とは別体であるため、大入力荷重により、規制部が第１固定部に当接して変形するようなダメージを受けても、規制部のみを交換することで再度防振装置を使用することができる。
　また、別体につき、規制部に大きな荷重がかかっても外筒部にはその荷重がダイレクトに伝わらないため、外筒部の損傷を防止することができる。 An antivibration device according to a first aspect of the present invention includes an inner cylinder portion fixed to a first fixing portion connected to one of a vibration generator and a vibration receiver, and an outer peripheral portion of the inner cylinder portion. An outer cylinder part fixed to a second fixing part connected to one of the vibration generator and the vibration receiver, and arranged between the inner cylinder part and the outer cylinder part. The elastic part, the outer cylinder part and the second fixing part are sandwiched and attached detachably, extend toward the first fixing part, and contact the first fixing part to deform the elastic part. And a regulation unit that regulates.
According to the first aspect of the invention, since the restricting portion that restricts the deformation of the elastic portion is detachably attached, when adjusting the clearance between the restricting portion and the first fixing portion, the restricting portion is removed from the vibration isolator. It is possible to remove and change the size and shape of the restricting portion and attach it to the vibration isolator again. Therefore, the clearance adjustment between the restricting portion and the first fixing portion can be easily performed without being limited by the size and shape of the elastic portion disposed between the inner cylinder portion and the outer cylinder portion.
Furthermore, since the restricting portion is attached by being sandwiched between the outer cylinder portion and the second fixing portion, it can be applied to an existing vibration isolator that does not have the restricting portion.
Furthermore, since the restricting portion is separate from the elastic portion and the outer cylinder portion, even if the restricting portion is damaged by contact with the first fixed portion due to a large input load, only the restricting portion is removed. The vibration isolator can be used again by replacing it.
Moreover, since the load is not directly transmitted to the outer cylinder part even if a large load is applied to the restricting part, damage to the outer cylinder part can be prevented.
　本発明の第２態様に係る防振装置は、前記内筒部の軸方向端部はそれぞれ、前記第１固定部と、前記第１固定部に連結される又は前記第１固定部とは別個の第３固定部に固定され、前記規制部は、前記第２固定部の両側から前記第１固定部及び前記第３固定部に向かって延出し、前記第１固定部及び前記第３固定部に隙間を空けて対向する延出部を有する。
　第２態様に記載の発明によれば、延出部が第１固定部だけでなく第３固定部に向かって延出し、この第３固定部に隙間を空けて対向するため、第１固定部又は第２固定部から弾性部にその軸方向の荷重が入力された場合、圧縮側及び引張側の両方で弾性部の変形を規制することができる。 In the vibration isolator according to the second aspect of the present invention, the axial ends of the inner cylindrical portion are respectively connected to the first fixing portion and the first fixing portion, or separately from the first fixing portion. The restriction portion extends from both sides of the second fixing portion toward the first fixing portion and the third fixing portion, and the first fixing portion and the third fixing portion are fixed to the third fixing portion. Has an extending portion facing each other with a gap.
According to the invention described in the second aspect, the extension portion extends not only to the first fixing portion but also to the third fixing portion, and faces the third fixing portion with a gap therebetween. Alternatively, when an axial load is input from the second fixed portion to the elastic portion, deformation of the elastic portion can be restricted on both the compression side and the tension side.
　本発明の第３態様に係る防振装置は、前記延出部は、前記弾性部を幅方向において挟むように形成されている。
　第３態様に記載の発明によれば、延出部が弾性部を幅方向において挟むように形成されているため、弾性部の軸方向の変形を規制することができる。 In the vibration isolator according to the third aspect of the present invention, the extension portion is formed so as to sandwich the elastic portion in the width direction.
According to the invention described in the third aspect, since the extending portion is formed so as to sandwich the elastic portion in the width direction, deformation of the elastic portion in the axial direction can be restricted.
　本発明の第４態様に係る防振装置は、前記規制部は、前記外筒部と前記第２固定部に挟まれるプレート部を備え、前記延出部は、前記プレート部に固定されたゴム又はゴムとプレートを積層した積層体である。
　第４態様に記載の発明によれば、外筒部と第２固定部に挟まれるのがプレート部であるため、規制部が確実に取り付けられる。また、延出部がゴム又はゴムとプレートを積層した積層体であるため、延出部が第１固定部又は第３固定部に当る際の荷重－たわみ特性の立ち上がりを調整できる。これにより、延出部接触時の衝撃を緩和することができる。また、当該接触時に発生される異音を低減することができる。 In the vibration isolator according to the fourth aspect of the present invention, the restricting portion includes a plate portion sandwiched between the outer cylinder portion and the second fixing portion, and the extending portion is a rubber fixed to the plate portion. Or it is the laminated body which laminated | stacked rubber | gum and a plate.
According to the invention described in the fourth aspect, since the plate portion is sandwiched between the outer tube portion and the second fixed portion, the restricting portion is securely attached. Further, since the extending portion is a laminated body in which rubber or rubber and a plate are laminated, it is possible to adjust the rise of the load-deflection characteristic when the extending portion hits the first fixing portion or the third fixing portion. Thereby, the impact at the time of extension part contact can be relieved. Moreover, the abnormal noise generated at the time of the contact can be reduced.
　本発明の第５態様に係る防振装置は、前記第１固定部又は前記第３固定部は、前記規制部の外側面を、隙間を空けて囲む第１囲み部を備える。
　第５態様に記載の発明によれば、第１固定部又は第２固定部から弾性部にその径方向の荷重が入力された場合、規制部が第１囲み部に当ることで、弾性部の径方向の変形を規制することができる。 In the vibration isolator according to the fifth aspect of the present invention, the first fixing portion or the third fixing portion includes a first surrounding portion that surrounds the outer surface of the restricting portion with a gap.
According to the invention described in the fifth aspect, when the radial load is input from the first fixed portion or the second fixed portion to the elastic portion, the restricting portion hits the first surrounding portion, so that the elastic portion Radial deformation can be restricted.
　本発明の第６態様に係る防振装置は、前記延出部に連結され、前記第１固定部又は前記第３固定部の外側面を、隙間を空けて囲む第２囲み部を備える。
　第６態様に記載の発明によれば、第１固定部又は第２固定部から弾性部にその径方向の荷重が入力された場合、第２囲み部が第１固定部又は第３固定部に当ることで、弾性部の径方向の変形を規制することができる。 The vibration isolator which concerns on the 6th aspect of this invention is connected to the said extension part, and is provided with the 2nd surrounding part which surrounds the outer surface of the said 1st fixing part or the said 3rd fixing part with a clearance gap.
According to the invention described in the sixth aspect, when the radial load is input from the first fixing portion or the second fixing portion to the elastic portion, the second surrounding portion becomes the first fixing portion or the third fixing portion. By hitting, the deformation of the elastic portion in the radial direction can be restricted.
　また、規制部に第２囲み部を設けるだけで、弾性部の軸方向の変形と径方向の変形を共に規制することができるため、規制の方向を変更するときに防振装置の他の部材を取り替えたり加工したりする時間を省略することができる。 In addition, since the axial deformation and the radial deformation of the elastic portion can be restricted by merely providing the second enclosing portion in the restricting portion, other members of the vibration isolator can be used when changing the restricting direction. It is possible to omit the time for replacing or processing.
　本発明の第７態様に係る防振装置は、前記外筒部は、筒部と前記筒部の端部から径方向外側へ延出するフランジ部を備え、前記筒部とフランジ部の接合部はＲ形状であり、前記フランジ部と前記第２固定部に挟まれて前記接合部に接触する前記規制部の端部は、面取りされている。
　第７態様に記載の発明によれば、フランジ部と第２固定部に挟まれて接合部に接触する前記規制部の端部が面取りされている。このため、フランジ部と規制部が確実に接触し、フランジ部と第２固定部で規制部を強固に挟み込むことができる。 In the vibration isolator according to the seventh aspect of the present invention, the outer tube portion includes a tube portion and a flange portion extending radially outward from an end portion of the tube portion, and a joint portion between the tube portion and the flange portion. Is an R shape, and the end of the restricting portion that is sandwiched between the flange portion and the second fixing portion and contacts the joint portion is chamfered.
According to the seventh aspect of the invention, the end portion of the restricting portion that is sandwiched between the flange portion and the second fixing portion and contacts the joint portion is chamfered. For this reason, a flange part and a control part contact reliably, and a control part can be pinched | interposed firmly with a flange part and a 2nd fixing | fixed part.
　以上説明したように本発明によれば、弾性部の寸法・形状にとらわれることなく、容易に規制部のクリアランス調整をすることが可能な防振装置を提供することができる。 As described above, according to the present invention, it is possible to provide a vibration isolator capable of easily adjusting the clearance of the restricting portion without being limited by the size and shape of the elastic portion.
本発明の第１実施形態に係る防振装置の側面断面図である。It is side surface sectional drawing of the vibration isolator which concerns on 1st Embodiment of this invention. 図１に示される防振装置における防振ゴムの平面図である。It is a top view of the vibration isolator in the vibration isolator shown by FIG. 図１に示される防振装置における防振ゴムの側面断面図である。It is side surface sectional drawing of the vibration isolator in the vibration isolator shown by FIG. 本発明の第１実施形態に係る防振装置に取り付けられるストッパープレートの概観斜視図である。It is a general-view perspective view of the stopper plate attached to the vibration isolator which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る防振装置に取り付けられるストッパープレートの断面図である。It is sectional drawing of the stopper plate attached to the vibration isolator which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る防振装置の組み立て前の状態を示す図である。It is a figure which shows the state before the assembly of the vibration isolator which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る防振装置の作用を説明する図である。It is a figure explaining the effect | action of the vibration isolator which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係る防振装置の概略断面図である。It is a schematic sectional drawing of the vibration isolator which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る防振装置の概略断面図である。It is a schematic sectional drawing of the vibration isolator which concerns on 3rd Embodiment of this invention. 本発明の第３実施形態に係る防振装置に取り付けられるストッパープレートの概略断面図である。It is a schematic sectional drawing of the stopper plate attached to the vibration isolator which concerns on 3rd Embodiment of this invention. 本発明の第５実施形態に係る防振装置に取り付けられるストッパープレートの概略断面図である。It is a schematic sectional drawing of the stopper plate attached to the vibration isolator which concerns on 5th Embodiment of this invention. 本発明の第４実施形態に係る防振装置の概略断面図である。It is a schematic sectional drawing of the vibration isolator which concerns on 4th Embodiment of this invention. 本発明の第４実施形態に係る防振装置の作用を説明する図である。It is a figure explaining the effect | action of the vibration isolator which concerns on 4th Embodiment of this invention. 本発明の第５実施形態に係る防振装置の概略断面図である。It is a schematic sectional drawing of the vibration isolator which concerns on 5th Embodiment of this invention. 本発明に係る防振装置に適用される規制部の変形例を示す図である。It is a figure which shows the modification of the control part applied to the vibration isolator which concerns on this invention. 本発明に係る防振装置に適用される規制部の変形例を示す図である。It is a figure which shows the modification of the control part applied to the vibration isolator which concerns on this invention. 本発明に係る防振装置に適用される規制部の変形例を示す図である。It is a figure which shows the modification of the control part applied to the vibration isolator which concerns on this invention. 本発明に係る防振装置に適用される規制部の変形例を示す図である。It is a figure which shows the modification of the control part applied to the vibration isolator which concerns on this invention. 本発明に係る防振装置に適用される規制部の変形例を示す図である。It is a figure which shows the modification of the control part applied to the vibration isolator which concerns on this invention. 本発明に係る防振装置に適用されるストッパープレートの変形例の断面図である。It is sectional drawing of the modification of the stopper plate applied to the vibration isolator which concerns on this invention. 図１３Ａに示すストッパープレートの変形例の上面図である。It is a top view of the modification of the stopper plate shown to FIG. 13A.
（第１実施形態）
　以下、本発明の第１実施形態に係る防振装置について図面を参照して説明する。
　図１は、本発明の第１実施形態に係る防振装置１０の側面断面図である。この防振装置１０は、例えば自動車における振動発生部であるエンジンを振動受部である車体へ支持するエンジンマウントとして適用されるものである。 (First embodiment)
Hereinafter, a vibration isolator according to a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side sectional view of a vibration isolator 10 according to a first embodiment of the present invention. The vibration isolator 10 is applied, for example, as an engine mount that supports an engine that is a vibration generating unit in an automobile to a vehicle body that is a vibration receiving unit.
　防振装置１０は、構造及び形状が互いに同一とされた一対の防振ゴム１２を備えており、これら一対の防振ゴム１２がその軸方向に沿って互いに対称的な位置関係となるように配置されている。
　一対の防振ゴム１２は、それぞれ円筒状に形成されるとともに共通軸Ｏを中心として配置された、内筒部１４と、外筒部１６と、弾性部１８とを備えている。 The anti-vibration device 10 includes a pair of anti-vibration rubbers 12 having the same structure and shape, and the pair of anti-vibration rubbers 12 have a symmetrical positional relationship with each other along the axial direction. Has been placed.
The pair of anti-vibration rubbers 12 includes an inner cylinder part 14, an outer cylinder part 16, and an elastic part 18 that are each formed in a cylindrical shape and are arranged around a common axis O.
　以下、一対の防振ゴム１２のうち一方の防振ゴム１２において軸Ｏ方向に沿った他方の防振ゴム１２側を軸Ｏ方向内側といい、一方の防振ゴムにおいて軸Ｏ方向に沿った他方の防振ゴムの反対側を軸Ｏ方向外側という。
　内筒部１４は、軸Ｏ方向に沿って円筒状に形成された金属製の内筒１４Ａを一対有し、一対の内筒１４Ａの軸Ｏ方向内側端部同士を互いに突き合わせた構成である。 Hereinafter, the other anti-vibration rubber 12 side along the axis O direction in one anti-vibration rubber 12 of the pair of anti-vibration rubbers 12 is referred to as the inner side in the axis O direction, and the one anti-vibration rubber 12 along the axis O direction. The opposite side of the other anti-vibration rubber is referred to as the outside in the direction of the axis O.
The inner cylinder portion 14 has a pair of metallic inner cylinders 14A formed in a cylindrical shape along the axis O direction, and the inner end portions in the axis O direction of the pair of inner cylinders 14A are abutted with each other.
　この内筒部１４の外周部には、外筒部１６が配置されている。この外筒部１６は、軸Ｏ方向に沿って内筒１４よりも短い円筒状に形成された金属製の外筒１６Ａを一対有し、一対の外筒１６Ａの軸Ｏ方向内側端部同士を互いに向き合わせた構成である。 The outer cylinder portion 16 is disposed on the outer peripheral portion of the inner cylinder portion 14. This outer cylinder part 16 has a pair of metal outer cylinders 16A formed in a cylindrical shape shorter than the inner cylinder 14 along the axis O direction, and the inner end parts in the axis O direction of the pair of outer cylinders 16A are connected to each other. It is the structure which faced each other.
　一対の外筒１６Ａにはそれぞれ、内周側に軸Ｏ方向へ扁平な円筒状に形成された筒部２０が設けられると共に、この筒部２０の軸Ｏ方向外側の端部（外側端部）から外周側へ延出する環状のフランジ部２２が一体的に形成されている。また、この筒部２０内からは、軸Ｏ方向外側へ内筒１４Ａが突出している。 Each of the pair of outer cylinders 16A is provided with a cylindrical portion 20 formed in a cylindrical shape that is flat in the direction of the axis O on the inner peripheral side, and an outer end portion (outer end portion) of the cylindrical portion 20 in the axis O direction. An annular flange portion 22 extending from the outer periphery to the outer peripheral side is integrally formed. Further, the inner cylinder 14A protrudes from the inside of the cylinder portion 20 to the outside in the axis O direction.
　以上の構成からなる内筒部１４と外筒部１６との間には、弾性部１８が配置されている。
　弾性部１８は、軸Ｏ方向に沿って略肉厚円筒状に形成された本体ゴム１８Ａを一対有し、一対の本体ゴム１８Ａの軸Ｏ方向内側端部同士を互いに向き合わせた構成である。 Between the inner cylinder part 14 and the outer cylinder part 16 which consist of the above structure, the elastic part 18 is arrange | positioned.
The elastic portion 18 has a pair of main body rubbers 18A formed in a substantially thick cylindrical shape along the axis O direction, and the inner end portions in the axis O direction of the pair of main body rubbers 18A face each other.
　一対の本体ゴム１８Ａはそれぞれ、その外周面における内側端部が筒部２０の内周面から筒部２０とフランジ部２２との境界部に亘る領域に加硫接着されると共に、内周面全体が内筒１４Ａ外周面に加硫接着されている。これにより、内筒１４Ａと外筒１６Ａとが本体ゴム１８Ａにより弾性的に連結される。 Each of the pair of main body rubbers 18A is vulcanized and bonded to an area where the inner end portion of the outer peripheral surface extends from the inner peripheral surface of the cylindrical portion 20 to the boundary portion between the cylindrical portion 20 and the flange portion 22, and the entire inner peripheral surface. Is vulcanized and bonded to the outer peripheral surface of the inner cylinder 14A. Thereby, the inner cylinder 14A and the outer cylinder 16A are elastically connected by the main body rubber 18A.
　図２Ａは、図１に示される防振装置１０における防振ゴム１２の平面図である。図２Ｂは、図１に示される防振装置１０における防振ゴム１２の側面断面図である。
　図２Ｂに示されるように、本体ゴム１８Ａの軸Ｏ方向内側の端面全体は、断面半円状となるように凹状に窪んだ凹部２４とされている。本体ゴム１８Ａには、軸Ｏ方向外側の端面に内筒１４Ａ外周面に沿って断面が略Ｖ字状とされた溝部２６が全周に亘って形成（図２Ａ参照）されると共に、この溝部２６外周部から外周側へ向って軸Ｏ方向内側（図２Ｂでは、下側）へ傾斜した傾斜面２８が形成されている。 2A is a plan view of the anti-vibration rubber 12 in the anti-vibration device 10 shown in FIG. 2B is a side sectional view of the vibration isolating rubber 12 in the vibration isolating apparatus 10 shown in FIG.
As shown in FIG. 2B, the entire end surface on the inner side in the axis O direction of the main body rubber 18A is a recess 24 that is recessed in a concave shape so as to have a semicircular cross section. A groove 26 having a substantially V-shaped cross section along the outer peripheral surface of the inner cylinder 14A is formed on the outer end surface of the main body rubber 18A along the outer periphery of the inner cylinder 14A (see FIG. 2A). An inclined surface 28 is formed which is inclined from the outer peripheral portion toward the outer peripheral side inward in the axis O direction (lower side in FIG. 2B).
　ここで、本体ゴム１８Ａは、ＮＲ、ＮＢＲ等のゴム材料を素材として形成されており、具体的には、内筒１４Ａ及び外筒１６Ａをそれぞれインサートコアとして加硫成形（モールド成形）されており、加硫成形と同時に外筒１６Ａの筒部２０内周面、内筒１４Ａ外周面、フランジ部２２上にそれぞれ加硫接着される。 Here, the main rubber 18A is formed from a rubber material such as NR or NBR, and specifically, vulcanized (molded) using the inner cylinder 14A and the outer cylinder 16A as insert cores. At the same time as vulcanization molding, the outer peripheral surface of the outer cylinder 16A, the outer peripheral surface of the inner cylinder 14A, and the flange 22 are vulcanized and bonded.
　以上の構成からなる一対の防振ゴム１２は、内筒部１４内に挿通された締結部材３０により、一対の本体ゴム１８Ａの軸Ｏ方向外側にそれぞれ配置された第１，第３固定部としての一対のプレート部材３２，３４を軸Ｏ方向内側に押し込むことでこれらのプレート部材３２，３４により軸Ｏ方向両側から挟み込まれている。 The pair of anti-vibration rubbers 12 having the above-described configuration is provided as first and third fixing parts respectively disposed on the outer side in the axis O direction of the pair of main body rubbers 18A by the fastening members 30 inserted into the inner cylinder part 14. The pair of plate members 32 and 34 are pushed inward in the direction of the axis O, so that the plate members 32 and 34 are sandwiched from both sides in the direction of the axis O.
　これにより、一対の防振ゴム１２を構成する内筒部１４は、その軸Ｏ方向両端部、すなわち一対の内筒１４Ａの軸Ｏ方向外側端面がそれぞれプレート部材３２、３４に固定される。 Thus, the inner cylinder portion 14 constituting the pair of vibration isolating rubbers 12 is fixed to the plate members 32 and 34 at both ends in the axis O direction, that is, the outer end surfaces in the axis O direction of the pair of inner cylinders 14A.
　締結部材３０は、ボルト３６と、ワッシャ３７と、ナット３８から構成される。ボルト３６は、一方のプレート部材３２の軸Ｏ方向外側から当該プレート部材３２のボルト孔４０内に挿入され、内筒部１４内及び他方のプレート部材３４のボルト孔４２にそれぞれ挿通され、当該他方のプレート部材３４から軸Ｏ方向外側に突出している。そして、ボルト３６において他方のプレート部材３４のボルト孔４２から突出した先端部に、ワッシャ３７を介してナット３８が螺合されて締め付けられている。 The fastening member 30 includes a bolt 36, a washer 37, and a nut 38. The bolt 36 is inserted into the bolt hole 40 of the plate member 32 from the outer side in the axis O direction of the one plate member 32, and is inserted through the bolt hole 42 of the inner cylinder portion 14 and the other plate member 34, respectively. The plate member 34 protrudes outward in the axis O direction. Then, a nut 38 is screwed and tightened to a front end portion of the bolt 36 protruding from the bolt hole 42 of the other plate member 34 via a washer 37.
　この締結部材３０が挿入されるプレート部材３２、３４は、一対の防振ゴム１２を軸Ｏ方向両側から挟む板材である。これらプレート部材３２、３４のうち少なくとも一つは、不図示のエンジン及び車体のうちの何れか一方に連結されている。
　また、エンジン及び車体のうちの何れか他方には、肉厚プレート状に形成された第２固定部としてのブラケット部材４４が連結されている。ブラケット部材４４には、外筒部１６を構成する一対の筒部２０の外径に対応する径を有した円形の開口部４６が穿設されている。 The plate members 32 and 34 into which the fastening member 30 is inserted are plate members that sandwich the pair of vibration-proof rubbers 12 from both sides in the axis O direction. At least one of the plate members 32 and 34 is connected to one of an engine (not shown) and the vehicle body.
Further, a bracket member 44 as a second fixing portion formed in a thick plate shape is connected to either the engine or the vehicle body. The bracket member 44 is formed with a circular opening 46 having a diameter corresponding to the outer diameter of the pair of cylindrical portions 20 constituting the outer cylindrical portion 16.
　このブラケット部材４４の表裏面における取付孔４６の周辺部分が、一対のフランジ部２２により軸Ｏ方向両側から挟み込まれている。これにより、一対の防振ゴム１２を構成する外筒部１６がブラケット部材４４に固定される。
　そして本実施形態では、一対のフランジ部２２のうち何れか一方のフランジ部２２とブラケット部材４４によって、弾性部１８の軸Ｏ方向の変形を規制する規制部としてのストッパープレート４８が挟まれて防振装置１０に取り外し自在に取り付けられている。 Peripheral portions of the mounting holes 46 on the front and back surfaces of the bracket member 44 are sandwiched by the pair of flange portions 22 from both sides in the axis O direction. Thereby, the outer cylinder part 16 which comprises a pair of anti-vibration rubber | gum 12 is fixed to the bracket member 44. As shown in FIG.
In this embodiment, the stopper plate 48 serving as a restricting portion that restricts deformation of the elastic portion 18 in the axis O direction is sandwiched and prevented by one of the pair of flange portions 22 and the bracket member 44. Removably attached to the vibration device 10.
　図３Ａは、本発明の第１実施形態に係る防振装置１０に取り付けられるストッパープレート４８の概観斜視図である。図３Ｂは、本発明の第１実施形態に係る防振装置１０に取り付けられるストッパープレート４８の断面図である。 FIG. 3A is a schematic perspective view of the stopper plate 48 attached to the vibration isolator 10 according to the first embodiment of the present invention. FIG. 3B is a cross-sectional view of the stopper plate 48 attached to the vibration isolator 10 according to the first embodiment of the present invention.
　ストッパープレート４８は、図１、図３に示すように、一対のフランジ部２２のうち何れか一方のフランジ部２２とブラケット部材４４によって表裏面が挟まれ、軸Ｏと同軸に配置されるリングプレート部５０を備える。
　リングプレート部５０の中央部には、外筒部１６を構成する一対の内筒２０の外径に対応する径を有した円形の開口部５２が穿設されている。 As shown in FIGS. 1 and 3, the stopper plate 48 is a ring plate that is disposed coaxially with the axis O, with the front and back surfaces sandwiched between one of the flange portions 22 and the bracket member 44. Part 50 is provided.
A circular opening 52 having a diameter corresponding to the outer diameter of the pair of inner cylinders 20 constituting the outer cylinder part 16 is formed in the center of the ring plate part 50.
　このリングプレート部５０の外周部は、軸Ｏ方向に沿って折曲げられ、延出部５４とされている。
　この延出部５４は、一対の本体ゴム１８Ａの何れか一方を、隙間を空けて取り囲む円筒状に形成され、リングプレート部５０の外周縁部全体からプレート部材３２に向かって軸Ｏ方向と平行となるように真っ直ぐに延出している。 The outer peripheral portion of the ring plate portion 50 is bent along the axis O direction to form an extension portion 54.
The extending portion 54 is formed in a cylindrical shape surrounding any one of the pair of main body rubbers 18A with a gap therebetween, and is parallel to the axis O direction from the entire outer peripheral edge portion of the ring plate portion 50 toward the plate member 32. It extends straight so that it becomes.
　次に、本発明の第１実施形態に係る防振装置１０の組立方法について説明する。
　図４は、本発明の第１実施形態に係る防振装置１０の組み立て前の状態を示す図である。 Next, a method for assembling the vibration isolator 10 according to the first embodiment of the present invention will be described.
FIG. 4 is a diagram illustrating a state before the vibration isolator 10 according to the first embodiment of the present invention is assembled.
　まず、一方の防振ゴム１２の外筒１６Ａを、ストッパープレート４８の延出部５４側からリングプレート部５０の開口部５２内に挿入し、ブラケット部材４４の軸Ｏ方向一方側から開口部４６内に挿入する。また、他方の防振ゴム１２の外筒１６Ａを、軸Ｏ方向他方側から開口部４６内に挿入する。 First, the outer cylinder 16A of one anti-vibration rubber 12 is inserted into the opening 52 of the ring plate part 50 from the extension part 54 side of the stopper plate 48, and the opening part 46 from one side of the bracket member 44 in the axis O direction. Insert inside. Further, the outer cylinder 16A of the other anti-vibration rubber 12 is inserted into the opening 46 from the other side in the axis O direction.
　これにより、ブラケット部材４４の表裏面における開口部４６の周辺部分が、防振ゴム１２それぞれのフランジ部２２によって軸Ｏ方向両側から挟み込まれる。また、ストッパープレート４８のリングプレート部５０が、一対のフランジ部２２のうち何れか一方のフランジ部２２とブラケット部材４４によって表裏面が挟み込まれて、ストッパープレート４８が何れか一方の防振ゴム１２（防振装置１０）に取り付けられる。 Thus, the peripheral portions of the opening 46 on the front and back surfaces of the bracket member 44 are sandwiched by the flange portions 22 of the antivibration rubber 12 from both sides in the axis O direction. Further, the ring plate portion 50 of the stopper plate 48 is sandwiched between the front and back surfaces of either one of the pair of flange portions 22 and the bracket member 44, so that the stopper plate 48 is one of the anti-vibration rubber 12. It is attached to (anti-vibration device 10).
　次に、一対のプレート部材３２,３４を、一対の防振ゴム１２それぞれの軸Ｏ方向外側の端面、すなわち弾性部１８の外端面上及び内筒部１４の軸Ｏ方向両端面上にそれぞれ配置する。 Next, the pair of plate members 32 and 34 are respectively disposed on the end surfaces of the pair of anti-vibration rubbers 12 in the axial O direction, that is, on the outer end surface of the elastic portion 18 and on both end surfaces of the inner cylinder portion 14 in the axial O direction. To do.
　そして、ボルト３６を、軸Ｏ方向外側から一方のプレート部材３２のボルト孔４０、内筒部１４の内周側及び他方のプレート部材３４のボルト孔４２内に挿入し、このボルト孔４２から突出するボルト３６の先端部にワッシャ３７を介してナット３８をねじ込む。 Then, the bolt 36 is inserted into the bolt hole 40 of one plate member 32, the inner peripheral side of the inner cylinder portion 14, and the bolt hole 42 of the other plate member 34 from the outside in the axis O direction, and protrudes from the bolt hole 42. A nut 38 is screwed into a tip end portion of the bolt 36 through a washer 37.
　このとき、ナット３８は、一対の防振ゴム１２における内筒１４Ａの一端部どうしが互いに圧接した状態となるまで、ボルト３６へねじ込まれる。
　これにより、一対の防振ゴム１２における弾性部１８は、それぞれ軸Ｏ方向に所定の予備圧縮量（図２Ｂに示されるＰＣ）だけ圧縮され、軸Ｏ方向に沿った入力荷重に対して所要の反発力を発生できる状態となる。すなわち、防振装置１０では、弾性部１８の予備圧縮量を大きくするほど、該弾性部１８による荷重に対する復元力（反発力）を増大できる。 At this time, the nut 38 is screwed into the bolt 36 until one end portions of the inner cylinder 14A of the pair of vibration-proof rubbers 12 are in pressure contact with each other.
As a result, the elastic portions 18 in the pair of vibration isolating rubbers 12 are respectively compressed by a predetermined preliminary compression amount (PC shown in FIG. 2B) in the direction of the axis O, and required for an input load along the direction of the axis O. It will be in the state where repulsive force can be generated. In other words, in the vibration isolator 10, the restoring force (repulsive force) against the load by the elastic portion 18 can be increased as the preliminary compression amount of the elastic portion 18 is increased.
　また、ナット３８が内筒１４Ａの一端部どうしが互いに圧接した状態となるまで、ボルト３６へねじ込まれるため、一対の防振ゴム１２における内筒部１４は、一対のプレート部材３２,３４に挟持されて該プレート部材３２,３４に固定され、一対の防振ゴム１２における外筒部１６は、一対のフランジ部２２によりブラケット部材４４を挟持して該ブラケット部材４４に固定される。 Further, since the nut 38 is screwed into the bolt 36 until one end portions of the inner cylinder 14A are in pressure contact with each other, the inner cylinder section 14 in the pair of vibration isolating rubbers 12 is sandwiched between the pair of plate members 32 and 34. The outer cylindrical portion 16 of the pair of vibration isolating rubbers 12 is fixed to the bracket member 44 with the bracket member 44 sandwiched between the pair of flange portions 22.
　次に、上記のように構成された本発明の第１実施形態に係る防振装置１０の作用について説明する。
　本発明の第１実施形態に係る防振装置１０では、例えば、振動発生部であるエンジンから軸Ｏ方向（本実施形態では、上下方向）に沿った振動がブラケット部材４４を介して入力されると、一対の防振ゴム１２における本体ゴム１８Ａが軸Ｏ方向に沿ってそれぞれ弾性変形する。 Next, the operation of the vibration isolator 10 according to the first embodiment of the present invention configured as described above will be described.
In the vibration isolator 10 according to the first embodiment of the present invention, for example, vibration along the axis O direction (vertical direction in the present embodiment) is input via the bracket member 44 from an engine that is a vibration generating unit. Then, the main rubber 18A in the pair of vibration-proof rubbers 12 is elastically deformed along the axis O direction.
　このとき、一方の防振ゴム１２における本体ゴム１８Ａと他方の防振ゴム１２の本体ゴム１８Ａとは、軸Ｏ方向に沿って互いに反対方向（一方が圧縮方向、他方が引張り方向）へ弾性変形し、これら防振ゴム１２の本体ゴム１８Ａの内部摩擦等により上下方向に沿った入力振動が減衰吸収される。 At this time, the main rubber 18A of the one anti-vibration rubber 12 and the main rubber 18A of the other anti-vibration rubber 12 are elastically deformed in directions opposite to each other along the axis O direction (one is the compression direction and the other is the tension direction). The input vibration along the vertical direction is attenuated and absorbed by the internal friction of the main body rubber 18A of the vibration-proof rubber 12.
　ここで、防振ゴム１２は、軸Ｏ方向外側の端面における外周側が傾斜面２８とされていることから、圧縮方向へ変形される本体ゴム１８Ａは、その変形量が増加するに従って、プレート部材３２と接触面積が増加すると共に、入力荷重により変形される部分が外周側へ拡張される。これにより、防振ゴム１２は、その変形量が増加するに従って、プレート部材３２へ作用させる反発力の増加率を徐々に増加させるような非線形的な特性を示す。 Here, since the anti-vibration rubber 12 has an inclined surface 28 on the outer peripheral side of the end face on the outer side in the axis O direction, the body rubber 18A deformed in the compression direction increases as the amount of deformation increases. As the contact area increases, the portion deformed by the input load is expanded to the outer peripheral side. Thereby, the anti-vibration rubber 12 exhibits a non-linear characteristic such that the rate of increase of the repulsive force acting on the plate member 32 is gradually increased as the amount of deformation thereof increases.
　また防振装置１０では、エンジンから軸Ｏ方向と直交する方向（本実施形態では、水平方向）に沿った振動がブラケット部材４４を介して入力されると、一対の防振ゴム１２における本体ゴム１８Ａが水平方向に沿ってそれぞれ弾性変形し、これらの本体ゴム１８Ａの内部摩擦等により水平方向に沿った入力振動も減衰吸収される。 Further, in the vibration isolator 10, when vibration along a direction orthogonal to the axis O direction (in this embodiment, the horizontal direction) is input from the engine via the bracket member 44, the main rubber in the pair of vibration isolating rubbers 12. 18A elastically deforms along the horizontal direction, and the input vibration along the horizontal direction is also damped and absorbed by the internal friction of the main rubber 18A.
　防振装置１０では、図１に示されるように、一対の本体ゴム１８Ａがそれぞれ所定の予備圧縮量ＰＣ（図２Ｂ参照）だけ圧縮された状態で、防振装置１０に取り付けられたストッパープレート４８のストッパ面５６とプレート部材３２との間に軸Ｏ方向に沿って所定幅の隙間（クリアランス）Ｓが形成される。この隙間Ｓの幅は、本体ゴム１８Ａの予備圧縮量（＝ＰＣ）より小さい範囲で、防振ゴム１２に入力される軸Ｏ方向に沿った荷重の最大値に応じて設定されている。 In the vibration isolator 10, as shown in FIG. 1, the stopper plate 48 attached to the vibration isolator 10 with the pair of main body rubbers 18A being compressed by a predetermined preliminary compression amount PC (see FIG. 2B). A gap (clearance) S having a predetermined width is formed along the axis O direction between the stopper surface 56 and the plate member 32. The width of the gap S is set in accordance with the maximum value of the load along the axis O direction input to the anti-vibration rubber 12 within a range smaller than the preliminary compression amount (= PC) of the main rubber 18A.
　図５には、プレート部材３２及びブラケット部材４４の一方を介して防振装置１０に軸Ｏ方向に沿って過大な荷重が入力されたときの状態が示されている。
　防振装置１０に過大な荷重が入力されると、一方（図５では上側）の本体ゴム１８Ａが圧縮方向へ弾性変形すると共に、予備圧縮された他方（図５では下側）の本体ゴム１８Ａが引張り方向へ復元する。 FIG. 5 shows a state when an excessive load is input along the axis O direction to the vibration isolator 10 through one of the plate member 32 and the bracket member 44.
When an excessive load is input to the vibration isolator 10, one (upper in FIG. 5) body rubber 18A is elastically deformed in the compression direction and the other pre-compressed (lower in FIG. 5) main body rubber 18A. Is restored in the tensile direction.
　このとき、一方の本体ゴム１８ＡにクリアランスＳの幅を超える変形が生じると、この本体ゴム１８Ａの外周側に配置されたストッパープレート４８のストッパ面５６がプレート部材３２へ圧接する。これにより、ストッパープレート４８がプレート部材３２に反発力を作用させ、この反発力により本体ゴム１８Ａの変形が制限される。 At this time, when deformation exceeding the width of the clearance S occurs in one of the main body rubbers 18A, the stopper surface 56 of the stopper plate 48 disposed on the outer peripheral side of the main body rubber 18A comes into pressure contact with the plate member 32. Accordingly, the stopper plate 48 applies a repulsive force to the plate member 32, and the deformation of the main rubber 18A is limited by the repulsive force.
　すなわち、軸Ｏ方向に沿った過大な荷重により一方の本体ゴム１８Ａが変形してストッパープレート４８がプレート部材３２に圧接すると、本体ゴム１８Ａの反発力に加え、ストッパープレート４８からの反発力がプレート部材３２に作用する。これにより、一方の本体ゴム１８Ａに隙間Ｓの幅を超える量の変形が生じると、防振装置１０（防振ゴム１２）の荷重－たわみ特性が急峻に立ち上がり、本体ゴム１８Ａに予備圧縮量を超える変形が生じることを制限する。 That is, when one main rubber 18A is deformed by an excessive load along the direction of the axis O and the stopper plate 48 is pressed against the plate member 32, the repulsive force from the stopper plate 48 is added to the repulsive force of the main rubber 18A. Acts on the member 32. As a result, when one of the main body rubbers 18A is deformed by an amount exceeding the width of the gap S, the load-deflection characteristic of the vibration isolator 10 (antivibration rubber 12) rises sharply, and the main rubber 18A is given a precompression amount. Limit the deformation to exceed.
　ここで、車両の種類を変更したこと等によりエンジン又は車両から防振装置１０への振動の入力量が変わった場合、これに合わせてストッパープレート４８のストッパ面５６とプレート部材３２との間のクリアランスＳを調整する必要がある。
　この場合、本発明の第１実施形態の防振装置１０によれば、ストッパープレート４８がフランジ部２２とブラケット部材４４と間に挟まれて取り付けられているだけなので、上記で説明した組立方法とは逆の手順で防振装置１０を解体すれば、ストッパープレート４８が取り外し自在となる。 Here, when the input amount of vibration from the engine or the vehicle to the vibration isolator 10 is changed due to a change in the type of the vehicle, the gap between the stopper surface 56 of the stopper plate 48 and the plate member 32 is adjusted accordingly. It is necessary to adjust the clearance S.
In this case, according to the vibration isolator 10 of the first embodiment of the present invention, since the stopper plate 48 is only sandwiched between the flange portion 22 and the bracket member 44, the assembly method described above If the vibration isolator 10 is disassembled in the reverse procedure, the stopper plate 48 can be removed.
　そして、ストッパープレート４８が取り外し自在であれば、防振装置１０からストッパープレート４８を取り外した後、このストッパープレート４８の寸法・形状を変更して再度防振装置１０に取り付けることができる。したがって、内筒部１４と外筒部１６の間に配置された弾性部１８の寸法・形状にとらわれることなく、容易にストッパープレート４８とプレート部材３２とのクリアランス調整をすることができる。 If the stopper plate 48 is detachable, the stopper plate 48 can be removed from the vibration isolator 10, and then the dimension and shape of the stopper plate 48 can be changed and attached to the vibration isolator 10 again. Therefore, the clearance between the stopper plate 48 and the plate member 32 can be easily adjusted without being limited by the size and shape of the elastic portion 18 disposed between the inner cylinder portion 14 and the outer cylinder portion 16.
　また、ストッパープレート４８が外筒部１６とブラケット部材４４に挟まれて取り付けられるため、弾性部１８の規制部を有していない既存の防振装置に適用が可能となる。
　さらに、ストッパープレート４８の延出部５４が筒状に形成されているため、弾性部１８の軸方向の変形を全周にわたって均等に規制することができる。 Further, since the stopper plate 48 is attached by being sandwiched between the outer cylinder portion 16 and the bracket member 44, the stopper plate 48 can be applied to an existing vibration isolator that does not have the restricting portion of the elastic portion 18.
Furthermore, since the extending portion 54 of the stopper plate 48 is formed in a cylindrical shape, the deformation of the elastic portion 18 in the axial direction can be uniformly regulated over the entire circumference.
　さらにまた、フランジ部２２とブラケット部材４４に挟まれるのがストッパープレート４８のリングプレート部５０であるため、ストッパープレート４８が防振装置１０に確実に取り付けられる。
　また、ストッパープレート４８が弾性部１８や外筒部１６とは別体であるため、大入力荷重により、ストッパープレート４８がプレート部材３２に当接して変形するようなダメージを受けても、ストッパープレート４８のみを交換することで再度防振装置１０を使用することができる。
　さらに、別体につき、ストッパープレート４８に大きな荷重がかかっても外筒部１６にはその荷重がダイレクトに伝わらないため、外筒部１６の損傷を防止することができる。
（第２実施形態）
　次に、本発明の第２実施形態について説明する。本実施形態では、第１実施形態と同様の部分については同一の符号を付して、その詳細な説明は省略する。 Furthermore, since the ring plate portion 50 of the stopper plate 48 is sandwiched between the flange portion 22 and the bracket member 44, the stopper plate 48 is securely attached to the vibration isolator 10.
Further, since the stopper plate 48 is separate from the elastic portion 18 and the outer cylinder portion 16, even if the stopper plate 48 is damaged by contact with the plate member 32 due to a large input load, the stopper plate 48 The vibration isolator 10 can be used again by exchanging only 48.
Furthermore, even if a large load is applied to the stopper plate 48 for the separate body, the load is not directly transmitted to the outer cylinder part 16, so that the outer cylinder part 16 can be prevented from being damaged.
(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　図６は、本発明の第２実施形態に係る防振装置６０の概略断面図である。
　第２実施形態に係る防振装置６０は、第１実施形態の構成に、ストッパープレート４８と同一形状のストッパープレート６２をもう一つ取り付けた構成である。 FIG. 6 is a schematic cross-sectional view of a vibration isolator 60 according to the second embodiment of the present invention.
The vibration isolator 60 according to the second embodiment has a configuration in which another stopper plate 62 having the same shape as the stopper plate 48 is attached to the configuration of the first embodiment.
　ストッパープレート６２のリングプレート部６４は、外筒部１６Ａの一対のフランジ部２２のうちストッパープレート４８を挟んでいないフランジ部２２とブラケット部材４４の間に挟まれ、ストッパープレート６２がストッパープレート４８とは対照的な位置に取り外し自在に防振装置６０に取り付けられる。
　ストッパープレート６２の延出部６６は、リングプレート部６４の外周縁部全体からプレート部材３４に向かって軸Ｏ方向と平行となるように真っ直ぐに延出し、プレート部材３４に隙間Ｓを空けて対向している。 The ring plate portion 64 of the stopper plate 62 is sandwiched between the bracket member 44 and the flange portion 22 that does not sandwich the stopper plate 48 among the pair of flange portions 22 of the outer cylinder portion 16A, and the stopper plate 62 is connected to the stopper plate 48. Are attached to the vibration isolator 60 in a detachable position.
The extension portion 66 of the stopper plate 62 extends straight from the entire outer peripheral edge portion of the ring plate portion 64 toward the plate member 34 so as to be parallel to the axis O direction, and faces the plate member 34 with a gap S therebetween. is doing.
　第２実施形態に係る防振装置６０の構成によれば、ストッパープレート４８の延出部５４がプレート部材３２に向かって延出し、このプレート部材３２に隙間を空けて対向し、かつ、ストッパープレート６２の延出部６６がプレート部材３４に向かって延出し、このプレート部材３４に隙間を空けて対向するため、プレート部材３２、３４又はブラケット部材４４から弾性部１８にその軸Ｏ方向の荷重が入力された場合、圧縮側及び引張側の両方で弾性部１８の変形を規制することができる。
（第３実施形態）
　次に、本発明の第３実施形態について説明する。本実施形態では、第１実施形態と同様の部分については同一の符号を付して、その詳細な説明は省略する。 According to the configuration of the vibration isolator 60 according to the second embodiment, the extension portion 54 of the stopper plate 48 extends toward the plate member 32, faces the plate member 32 with a gap therebetween, and the stopper plate Since the extending portion 66 of 62 extends toward the plate member 34 and faces the plate member 34 with a gap, a load in the axis O direction is applied from the plate members 32 and 34 or the bracket member 44 to the elastic portion 18. When input, the deformation of the elastic portion 18 can be restricted on both the compression side and the tension side.
(Third embodiment)
Next, a third embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　図７は、本発明の第３実施形態に係る防振装置７０の概略断面図である。
　第３実施形態に係る防振装置７０は、第１実施形態の構成において、一対の外筒１６Ａそれぞれの筒部２０とフランジ部２２の接合部７２がＲ形状となっている。また、このＲ形状に対応して、第１実施形態と同様に取り付けられるストッパープレート７４の端部が面取りされている。
　具体的には、図８Ａに示すように、ストッパープレート７４を構成するリングプレート部７６の端部７８、すなわち開口部８０の縁部が、接合部７２のＲ形状に対応して面取りされている。 FIG. 7 is a schematic cross-sectional view of a vibration isolator 70 according to the third embodiment of the present invention.
In the vibration isolator 70 according to the third embodiment, in the configuration of the first embodiment, the joint portion 72 of the cylindrical portion 20 and the flange portion 22 of each of the pair of outer cylinders 16A has an R shape. Moreover, the edge part of the stopper plate 74 attached similarly to 1st Embodiment is chamfered corresponding to this R shape.
Specifically, as shown in FIG. 8A, the end portion 78 of the ring plate portion 76 constituting the stopper plate 74, that is, the edge portion of the opening 80 is chamfered corresponding to the R shape of the joint portion 72. .
　本発明の第３実施形態に係る防振装置７０の構成によれば、フランジ部２２とブラケット部材４４に挟まれて外筒１６Ａの接合部７２に接触するストッパープレート７４の端部７８が面取りされているため、フランジ部２２とストッパープレート７４が確実に接触し、フランジ部２２とブラケット部材４４でストッパープレート７４を強固に挟み込むことができる。
　また、フランジ部２２とブラケット部材４４の間にはストッパープレート７４が配置されるため、ブラケット部材４４が外筒１６Ａの接合部７２に接触しない。このため、接合部７２のＲ形状に対応してブラケット部材４４を面取りする必要がなくなる。 According to the configuration of the vibration isolator 70 according to the third embodiment of the present invention, the end portion 78 of the stopper plate 74 that is sandwiched between the flange portion 22 and the bracket member 44 and contacts the joint portion 72 of the outer cylinder 16A is chamfered. Therefore, the flange portion 22 and the stopper plate 74 are in reliable contact, and the stopper plate 74 can be firmly sandwiched between the flange portion 22 and the bracket member 44.
Further, since the stopper plate 74 is disposed between the flange portion 22 and the bracket member 44, the bracket member 44 does not contact the joint portion 72 of the outer cylinder 16A. For this reason, it is not necessary to chamfer the bracket member 44 corresponding to the R shape of the joint portion 72.
　なお、上記第３実施形態では、フランジ部２２とブラケット部材４４の間にストッパープレート７４を配置するスペースを確保するためブラケット部材４４に加工を施している。ただし、この加工を省略してフランジ部２２とブラケット部材４４の間にそのままストッパープレート７４を配置しても良い。
（第４実施形態）
　次に、本発明の第４実施形態について説明する。本実施形態では、第１実施形態と同様の部分については同一の符号を付して、その詳細な説明は省略する。 In the third embodiment, the bracket member 44 is processed to ensure a space for disposing the stopper plate 74 between the flange portion 22 and the bracket member 44. However, this processing may be omitted and the stopper plate 74 may be disposed as it is between the flange portion 22 and the bracket member 44.
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　図９は、本発明の第４実施形態に係る防振装置８０の概略断面図である。
　第４実施形態に係る防振装置８０は、第３実施形態の構成において、プレート部材３２に代えて、お椀蓋状のプレート部材８２を用いている。 FIG. 9 is a schematic cross-sectional view of a vibration isolator 80 according to the fourth embodiment of the present invention.
The vibration isolator 80 according to the fourth embodiment uses a bowl-shaped plate member 82 instead of the plate member 32 in the configuration of the third embodiment.
　プレート部材８２は、軸Ｏ方向と直交する方向に延びるプレート本体８４と、第１囲み部８６からなる。
　この第１囲み部８６は、プレート本体８４の外周縁部全体に設けられ、該プレート本体８４からブラケット部材４４に向かって延出した円筒状の部材である。これにより、第１囲み部８６は、ストッパープレート４８の外側面すなわち延出部５４の外周面を、所定幅の隙間Ｔ（クリアランス）を空けて囲むことになる。 The plate member 82 includes a plate body 84 extending in a direction orthogonal to the direction of the axis O and a first surrounding portion 86.
The first surrounding portion 86 is a cylindrical member that is provided on the entire outer peripheral edge of the plate body 84 and extends from the plate body 84 toward the bracket member 44. Thus, the first surrounding portion 86 surrounds the outer surface of the stopper plate 48, that is, the outer peripheral surface of the extending portion 54 with a gap T (clearance) having a predetermined width.
　図１０には、プレート部材３４，８２又はブラケット部材４４を介して防振装置８０に軸Ｏ方向と直交する方向、すなわち径方向に沿って過大な荷重が入力されたときの状態が示されている。
　図１０に示すような径方向Ｐ（図１０では右側）に向かって防振装置８０に過大な荷重が入力されると、左側の弾性部１８が圧縮方向へ弾性変形すると共に、右側の弾性部１８が引張り方向へ弾性変形する。
　このとき、右側の弾性部１８にクリアランスＴの幅を超える変形が生じると、この弾性部１８の外周側に配置されたストッパープレート４８の外周面が第１囲み部８６へ圧接する。これにより、ストッパープレート４８が第１囲み部８６に反発力を作用させ、この反発力により弾性部１８の変形が制限される。 FIG. 10 shows a state when an excessive load is input to the vibration isolator 80 through the plate members 34 and 82 or the bracket member 44 in the direction orthogonal to the axis O direction, that is, along the radial direction. Yes.
When an excessive load is input to the vibration isolator 80 in the radial direction P (right side in FIG. 10) as shown in FIG. 10, the left elastic portion 18 is elastically deformed in the compression direction and the right elastic portion 18 is elastically deformed in the tensile direction.
At this time, when deformation exceeding the width of the clearance T occurs in the right elastic portion 18, the outer peripheral surface of the stopper plate 48 disposed on the outer peripheral side of the elastic portion 18 comes into pressure contact with the first surrounding portion 86. Accordingly, the stopper plate 48 applies a repulsive force to the first surrounding portion 86, and the deformation of the elastic portion 18 is limited by the repulsive force.
　以上のように本発明の第４実施形態に係る防振装置８０の構成によれば、プレート部材３４，８４又はブラケット部材４４から弾性部１８にその径方向の荷重が入力された場合、ストッパープレート４８が第１囲み部８６に当ることで、弾性部１８の径方向の変形を規制することができる。
（第５実施形態）
　次に、本発明の第５実施形態について説明する。本実施形態では、第１実施形態と同様の部分については同一の符号を付して、その詳細な説明は省略する。 As described above, according to the configuration of the vibration isolator 80 according to the fourth embodiment of the present invention, when a radial load is input from the plate members 34 and 84 or the bracket member 44 to the elastic portion 18, the stopper plate Since 48 hits the first surrounding portion 86, the deformation of the elastic portion 18 in the radial direction can be restricted.
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
　図１１は、本発明の第５実施形態に係る防振装置９０の概略断面図である。
　本発明の第５実施形態に係る防振装置９０は、第３実施形態の構成において、ストッパープレート７４に代えて、円筒状の第２囲み部９２を備えたストッパープレート９４を用いる。 FIG. 11 is a schematic cross-sectional view of a vibration isolator 90 according to the fifth embodiment of the present invention.
The vibration isolator 90 according to the fifth embodiment of the present invention uses a stopper plate 94 having a cylindrical second surrounding portion 92 instead of the stopper plate 74 in the configuration of the third embodiment.
　この第２囲み部９２は、図１１及び図８Ｂに示すように、ストッパープレート９４の延出部５４に連結され、プレート部材３２の軸Ｏ方向と直交する方向の外側面９６を、所定幅の隙間Ｔ（クリアランス）を空けて囲んでいる。 As shown in FIGS. 11 and 8B, the second surrounding portion 92 is connected to the extending portion 54 of the stopper plate 94, and the outer surface 96 in a direction perpendicular to the direction of the axis O of the plate member 32 has a predetermined width. A gap T (clearance) is surrounded.
　本発明の第５実施形態に係る防振装置９０の構成によれば、第４実施形態と同様に、プレート部材３２から弾性部１８にその径方向の荷重が入力された場合、第２囲み部９２がプレート部材３２の外側面９６に当ることで、弾性部１８の径方向の変形を規制することができる。
　また、ストッパープレート９４はストッパープレート７４に第２囲み部９２を設ける構成なので、規制の方向を変更するときに防振装置１０の他の部材やプレート部材３２、３４等を取り替えたり加工したりする時間を省略することができる。 According to the configuration of the vibration isolator 90 according to the fifth embodiment of the present invention, as in the fourth embodiment, when the radial load is input from the plate member 32 to the elastic portion 18, the second surrounding portion Since 92 hits the outer surface 96 of the plate member 32, the deformation of the elastic portion 18 in the radial direction can be restricted.
Further, since the stopper plate 94 is provided with the second surrounding portion 92 on the stopper plate 74, other members of the vibration isolator 10, the plate members 32, 34, and the like are replaced or processed when the regulation direction is changed. Time can be omitted.
　なお、本発明は、上記の実施形態に限るものではなく、本発明の要旨を逸脱しない限りにおいて、種々の変形、変更、改良が可能である。
　例えば、本発明に係る弾性部１８の規制部としては、上述したストッパープレート４８，６２，７４，９４の構造に限られるものではなく、例えば図１２Ａ～図１２Ｅに示すような構造であっても良い。 The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the gist of the present invention.
For example, the restricting portion of the elastic portion 18 according to the present invention is not limited to the structure of the stopper plates 48, 62, 74, 94 described above, and may have a structure as shown in FIGS. 12A to 12E, for example. good.
　図１２Ａでは、規制部１００がリングプレート部１０２と、リングプレート部１０２に固定されたゴムからなる円筒状の延出部１０４とを有する構造が示されている。
　図１２Ｂでは、規制部１１０がリングプレート部１１２と、リングプレート部１１２に固定されたゴム１１４及びプレート１１６からなる円筒状の延出部１１８とを有する構造が示されている。
　図１２Ｃでは、規制部１２０がリングプレート部１２２と、ゴム１２４及びプレート１２６を積層した積層体からなる円筒状の延出部１２８とを有する構造が示されている。
　図１２Ｄでは、規制部１３０がリングプレート部１３２と、延出部１４０とを有する構造が示されている。この延出部１４０は、リングプレート部１３２の外周部が軸Ｏ方向に沿って折曲げられて形成された第１の延出部材１３４と、第１の延出部材１３４の（図１２中の）上端部が軸Ｏ方向に対して垂直（水平方向）に折曲げられて形成された第２の延出部材１３６と、第１の延出部材１３４及び第２の延出部材１３６を取り囲むゴム１３８とで構成されている。
　図１２Ｅでは、規制部１５０がリングプレート部１５２と、延出部１５８とを有する構造が示されている。この延出部１５８は、リングプレート部１５２の外周部が軸Ｏ方向に沿って折曲げられて形成された延出部材１５４と、この延出部材１５４を取り囲むゴム１５６とで構成されている。 FIG. 12A shows a structure in which the restricting portion 100 includes a ring plate portion 102 and a cylindrical extending portion 104 made of rubber fixed to the ring plate portion 102.
FIG. 12B shows a structure in which the restricting portion 110 has a ring plate portion 112 and a cylindrical extending portion 118 made of a rubber 114 and a plate 116 fixed to the ring plate portion 112.
FIG. 12C shows a structure in which the restricting portion 120 includes a ring plate portion 122 and a cylindrical extending portion 128 made of a laminated body in which a rubber 124 and a plate 126 are laminated.
FIG. 12D shows a structure in which the restricting portion 130 has a ring plate portion 132 and an extending portion 140. The extending portion 140 includes a first extending member 134 formed by bending an outer peripheral portion of the ring plate portion 132 along the axis O direction, and a first extending member 134 (in FIG. 12). ) The second extending member 136 formed by bending the upper end portion in a direction perpendicular to the axis O (horizontal direction), and the rubber surrounding the first extending member 134 and the second extending member 136 138.
FIG. 12E shows a structure in which the restricting portion 150 includes a ring plate portion 152 and an extending portion 158. The extending portion 158 includes an extending member 154 formed by bending the outer peripheral portion of the ring plate portion 152 along the axis O direction, and a rubber 156 surrounding the extending member 154.
　以上のように弾性部１８の規制部を、図１２Ａ～図１２Ｅに示す構造とすることで、延出部１０４，１１８，１２８,１４０,１５８がプレート部材３２，３４等に当る際の荷重－たわみ特性の立ち上がりを調整できる。これにより、延出部１０４，１１８，１２８,１４０,１５８接触時の衝撃を緩和することができる。また、当該接触時に発生される異音を低減することができる。 As described above, since the restricting portion of the elastic portion 18 has the structure shown in FIGS. 12A to 12E, the load when the extending portions 104, 118, 128, 140, 158 hit the plate members 32, 34, etc.- The rise of the deflection characteristics can be adjusted. Thereby, the impact at the time of the extension part 104,118,128,140,158 contact can be relieved. Moreover, the abnormal noise generated at the time of the contact can be reduced.
　また、第１実施形態等では、ストッパープレート４８のリングプレート部５０の外周縁部全体に、延出部５４が設けられた構成を説明したが、ストッパープレート４８のリングプレート部５０の外周縁部の一部に、延出部５４が設けられた構成であっても良い。このような延出部の一例としては、格子状のものや柵状のものが挙げられる。なお、リングプレート部５０も同様の形状とすることができ、また他にも例えばストッパープレート４８の底部のプレート部は、一部のみがリング状であってもよい。
　さらに、第１実施形態等では、ストッパープレート４８の延出部５４の形状が円筒状である場合を説明したが、本発明に係る規制部の延出部は防振装置の形状に合わせて四角筒状、三角筒状等、適宜形状を変更することができる。また、延出部５４は、円筒状でなくても、弾性部１８を幅方向において挟むように形成されていてもよい。
　具体的には、図１３Ａ及び図１３Ｂに示すように、向かい合う所定の２辺がリング状でその他の向かい合う２辺が直線状のプレート部１６２を備えたストッパープレート１６０において、当該プレート部１６２のリング状の２辺方向の外周部が軸Ｏ方向に沿って折曲げられて形成され、弾性部１８を幅方向において挟む２つの延出部材１６４等が一例として挙げられる。
　このような構成の場合、ストッパープレート１６０を配置するのに必要なスペースを削減することができ、またストッパープレート１６０の材料コストも低減できる。 In the first embodiment and the like, the configuration in which the extending portion 54 is provided on the entire outer peripheral edge portion of the ring plate portion 50 of the stopper plate 48 has been described. However, the outer peripheral edge portion of the ring plate portion 50 of the stopper plate 48 is described. A configuration in which the extending portion 54 is provided in a part of the portion may be used. As an example of such an extension part, a lattice-shaped thing and a fence-like thing are mentioned. The ring plate portion 50 can also have the same shape. In addition, for example, only a part of the bottom plate portion of the stopper plate 48 may have a ring shape.
Furthermore, in the first embodiment and the like, a case has been described in which the shape of the extending portion 54 of the stopper plate 48 is cylindrical, but the extending portion of the regulating portion according to the present invention is a square according to the shape of the vibration isolator. The shape can be changed as appropriate, such as a cylindrical shape or a triangular cylindrical shape. Moreover, the extension part 54 may not be cylindrical, but may be formed so as to sandwich the elastic part 18 in the width direction.
Specifically, as shown in FIGS. 13A and 13B, in a stopper plate 160 having a plate portion 162 in which two predetermined opposite sides are ring-shaped and the other two opposite sides are linear, the ring of the plate portion 162 As an example, there are two extending members 164 that are formed by bending the outer peripheral portion of the two sides along the axis O direction and sandwich the elastic portion 18 in the width direction.
In the case of such a configuration, a space required for arranging the stopper plate 160 can be reduced, and the material cost of the stopper plate 160 can be reduced.
　さらにまた、本発明に係る弾性部１８の規制部としては、外筒部１６と第２固定部材としてのブラケット部材４４に挟まれ、第１固定部としてのプレート部材３２又は第３固定部としてのプレート部材３４に向かって延出するものであれば、如何なる態様をも採用することができ、規制部は、例えば、外筒部１６とブラケット部材４４に挟まれる規制部の部材と、プレート部材３２又はプレート部材３４に向かって延出する部材を複数個備える構成であっても良い。 Furthermore, as the restricting portion of the elastic portion 18 according to the present invention, the elastic member 18 is sandwiched between the outer cylinder portion 16 and the bracket member 44 as the second fixing member, and serves as the plate member 32 as the first fixing portion or the third fixing portion. As long as it extends toward the plate member 34, any form can be adopted, and the restricting portion includes, for example, a member of a restricting portion sandwiched between the outer cylinder portion 16 and the bracket member 44, and the plate member 32. Or the structure provided with two or more members extended toward the plate member 34 may be sufficient.
　さらにまた、第１～第５実施形態では、内筒部１４が一対の内筒１４Ａ、外筒部１６が一対の外筒１６Ａ、弾性部１８が一対の本体ゴム１８Ａからなる構成を説明したが、内筒部１４、外筒部１６、弾性部１８はそれぞれ一対的に形成された内筒、外筒、本体ゴムからなる構成や、それぞれ３個以上の内筒、外筒、本体ゴムからなる構成であっても良い。
　また、第１～第５実施形態では、規制部としてのストッパープレート４８が外筒１６Ａのフランジ部２２とブラケット部材４４に挟まれる構成を説明したが、本発明に係る規制部は、外筒部１６とブラケット部材４４に挟まれる構成であれば良く、例えば、外筒部１６の筒部２０外周面とブラケット部材４４に挟まれる構成であっても良い。 Furthermore, in the first to fifth embodiments, the configuration in which the inner cylinder portion 14 is composed of a pair of inner cylinders 14A, the outer cylinder portion 16 is composed of a pair of outer cylinders 16A, and the elastic portion 18 is composed of a pair of main body rubbers 18A. The inner cylinder part 14, the outer cylinder part 16, and the elastic part 18 are each composed of a pair of inner cylinder, outer cylinder, and main body rubber, or each of three or more inner cylinders, outer cylinders, and main body rubber. It may be a configuration.
In the first to fifth embodiments, the configuration in which the stopper plate 48 as the restricting portion is sandwiched between the flange portion 22 and the bracket member 44 of the outer cylinder 16A has been described. However, the restricting portion according to the present invention includes the outer cylinder portion. 16 and the bracket member 44 may be used, and for example, a configuration sandwiched between the outer peripheral surface of the cylindrical portion 20 of the outer cylindrical portion 16 and the bracket member 44 may be used.
　さらに、第４、第５実施形態では、第１囲み部８６と第２囲み部９２の形状が円筒状である場合を説明したが、本発明に係る第１囲み部、第２囲み部は、防振装置、特に規制部の形状に合わせて四角筒状、三角筒状等、適宜形状を変更することができる。
　さらにまた、本発明に係る第１囲み部及び第２囲み部は、格子状、柵状のものであっても良い。 Furthermore, although the case where the shape of the 1st surrounding part 86 and the 2nd surrounding part 92 was cylindrical shape was demonstrated in 4th, 5th embodiment, the 1st surrounding part and 2nd surrounding part which concern on this invention are the following. The shape of the anti-vibration device, in particular, a rectangular tube shape, a triangular tube shape, or the like can be appropriately changed in accordance with the shape of the restriction portion.
Furthermore, the 1st surrounding part and 2nd surrounding part which concern on this invention may be a grid | lattice form and a fence-like thing.
　また、第１～第５実施形態の構成を適宜組み合わせて防振装置を構成することもでき、例えば、第２実施形態の防振装置６０の一対のストッパープレート４８、６２にそれぞれ、第３実施形態に係る面取り、第５実施形態に係る第２囲み部を適用することも可能である。また、第４実施形態で説明したプレート部材３２の第１囲み部８６を、プレート部材３４に設けることも可能である。
　さらに、弾性部２８に規制部（ストッパーゴム）が設けられている場合であっても、第１～第５実施形態の構成を適用することが可能である。このように、規制部として弾性部２８に設けられたもの（ストッパーゴム）と、弾性部２８とは別体として設けられたもの（ストッパープレート）とを同時に有する防振装置とすることにより、ストッパーゴムのみを有する防振装置に比べ、例えば防振装置の荷重－たわみ特性をより調整することができる。 The vibration isolator can also be configured by appropriately combining the configurations of the first to fifth embodiments. For example, each of the pair of stopper plates 48 and 62 of the vibration isolator 60 of the second embodiment is configured in the third embodiment. It is also possible to apply the chamfer according to the form and the second surrounding portion according to the fifth embodiment. Further, the first surrounding portion 86 of the plate member 32 described in the fourth embodiment can be provided in the plate member 34.
Furthermore, even when the elastic portion 28 is provided with a restricting portion (stopper rubber), the configurations of the first to fifth embodiments can be applied. In this way, the anti-vibration device having the one provided on the elastic portion 28 as the restricting portion (stopper rubber) and the one provided separately from the elastic portion 28 (stopper plate) can be used as the stopper. For example, the load-deflection characteristic of the vibration isolator can be adjusted more than the vibration isolator having only rubber.
１０，６０，７０，８０，９０　防振装置
１４　内筒部
１６　外筒部
１８　弾性部
２２　フランジ部
３２，３４，８２　プレート部材（第１固定部、第３固定部）
４４　ブラケット部材（第２固定部）
４８，６２，７４，９４　ストッパープレート（規制部）
５０，６４，７６，１１２，１０２，１２２,１３２,１５２,１６２　プレート部
５４，６６，１０４，１１８，１２８,１４０,１５８,１６４　延出部
７２ 接合部
１００，１１０，１２０,１３０,１５０　規制部
１１４，１２４,１３８,１５６　ゴム
１１６，１２６　プレート
Ｏ 軸
Ｓ、Ｔ　隙間 10, 60, 70, 80, 90 Vibration isolator 14 Inner cylinder part 16 Outer cylinder part 18 Elastic part 22 Flange parts 32, 34, 82 Plate member (first fixing part, third fixing part)
44 Bracket member (second fixing part)
48, 62, 74, 94 Stopper plate (Regulator)
50, 64, 76, 112, 102, 122, 132, 152, 162 Plate part 54, 66, 104, 118, 128, 140, 158, 164 Extension part 72 Joint part 100, 110, 120, 130, 150 Restriction Portion 114, 124, 138, 156 Rubber 116, 126 Plate O Axis S, T Clearance

Claims (7)

  1. 　振動発生体及び振動受体のうちの何れか一方に連結された第１固定部に固定される内筒部と、
    　前記内筒部の外周部に配置され、前記振動発生体及び前記振動受体のうちの何れか他方に連結された第２固定部に固定される外筒部と、
    　前記内筒部と前記外筒部の間に配置された弾性部と、
    　前記外筒部と前記第２固定部に挟まれて取り外し自在に取り付けられると共に前記第１固定部に向かって延出し、前記第１固定部に当ることで前記弾性部の変形を規制する規制部と、
    　を備える防振装置。     An inner cylinder portion fixed to a first fixing portion connected to any one of the vibration generator and the vibration receiver;
    An outer cylindrical portion that is disposed on the outer peripheral portion of the inner cylindrical portion, and is fixed to a second fixing portion that is connected to one of the vibration generator and the vibration receiver;
    An elastic portion disposed between the inner tube portion and the outer tube portion;
    A restricting portion that is detachably attached between the outer cylinder portion and the second fixing portion, extends toward the first fixing portion, and restricts deformation of the elastic portion by hitting the first fixing portion. When,
    A vibration isolator.
  2. 　前記内筒部の軸方向端部はそれぞれ、前記第１固定部と、前記第１固定部に連結される又は前記第１固定部とは別個の第３固定部に固定され、
    　前記規制部は、前記第２固定部の両側から前記第１固定部及び前記第３固定部に向かって延出し、前記第１固定部及び前記第３固定部に隙間を空けて対向する延出部を有する請求項１に記載の防振装置。     The axial ends of the inner cylinder portions are respectively connected to the first fixing portion and the third fixing portion that is connected to the first fixing portion or separate from the first fixing portion,
    The restricting portion extends from both sides of the second fixing portion toward the first fixing portion and the third fixing portion, and extends to face the first fixing portion and the third fixing portion with a gap. The vibration isolator of Claim 1 which has a part.
  3. 　前記延出部は、前記弾性部を幅方向において挟むように形成されている請求項２に記載の防振装置。 The anti-vibration device according to claim 2, wherein the extending portion is formed so as to sandwich the elastic portion in the width direction.
  4. 　前記規制部は、前記外筒部と前記第２固定部に挟まれるプレート部を備え、
    　前記延出部は、前記プレート部に固定されたゴム又はゴムとプレートを積層した積層体である請求項２又は請求項３に記載の防振装置。     The restricting portion includes a plate portion sandwiched between the outer tube portion and the second fixing portion,
    4. The vibration isolator according to claim 2, wherein the extending portion is rubber fixed to the plate portion or a laminated body in which rubber and a plate are stacked. 5.
  5. 　前記第１固定部又は前記第３固定部は、前記規制部の外側面を、隙間を空けて囲む第１囲み部を備える請求項２～請求項４のいずれか１項に記載の防振装置。 The vibration isolator according to any one of claims 2 to 4, wherein the first fixing portion or the third fixing portion includes a first surrounding portion that surrounds an outer surface of the restricting portion with a gap. .
  6. 　前記延出部に連結され、前記第１固定部又は前記第３固定部の外側面を、隙間を空けて囲む第２囲み部を備える請求項２～請求項４のいずれか１項に記載の防振装置。 The second surrounding portion according to any one of claims 2 to 4, further comprising a second surrounding portion that is connected to the extending portion and surrounds the outer surface of the first fixing portion or the third fixing portion with a gap. Anti-vibration device.
  7. 　前記外筒部は、筒部と前記筒部の端部から径方向外側へ延出するフランジ部を備え、
    　前記筒部とフランジ部の接合部はＲ形状であり、
    　前記フランジ部と前記第２固定部に挟まれて前記接合部に接触する前記規制部の端部は、面取りされている請求項１～請求項６のいずれか１項に記載の防振装置。     The outer tube portion includes a tube portion and a flange portion extending radially outward from an end portion of the tube portion,
    The joint part of the said cylinder part and a flange part is R shape,
    The vibration isolator according to any one of claims 1 to 6, wherein an end portion of the restricting portion that is sandwiched between the flange portion and the second fixing portion and contacts the joint portion is chamfered.
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