WO2019216048A1 - Dispositif d'isolation contre les vibrations - Google Patents

Dispositif d'isolation contre les vibrations Download PDF

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Publication number
WO2019216048A1
WO2019216048A1 PCT/JP2019/013214 JP2019013214W WO2019216048A1 WO 2019216048 A1 WO2019216048 A1 WO 2019216048A1 JP 2019013214 W JP2019013214 W JP 2019013214W WO 2019216048 A1 WO2019216048 A1 WO 2019216048A1
Authority
WO
WIPO (PCT)
Prior art keywords
main body
mounting member
axial direction
liquid chamber
rubber
Prior art date
Application number
PCT/JP2019/013214
Other languages
English (en)
Japanese (ja)
Inventor
晃大 齋藤
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
Priority claimed from JP2018091754A external-priority patent/JP7027245B2/ja
Priority claimed from JP2018091482A external-priority patent/JP2019196812A/ja
Priority claimed from JP2018091481A external-priority patent/JP6995012B2/ja
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
Publication of WO2019216048A1 publication Critical patent/WO2019216048A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/16—Units of the bushing type, i.e. loaded predominantly radially specially adapted for receiving axial loads

Definitions

  • the present invention relates to a vibration isolator that is applied to, for example, automobiles and industrial machines and absorbs and attenuates vibrations of a vibration generating unit such as an engine.
  • a vibration isolator that is applied to, for example, automobiles and industrial machines and absorbs and attenuates vibrations of a vibration generating unit such as an engine.
  • a cylindrical outer mounting member connected to one of the vibration generating portion and the vibration receiving portion, an inner mounting member connected to the other and disposed inside the outer mounting member, and an outer side
  • a liquid chamber between the pair of first main body rubbers and the pair of first main body rubbers connected to the mounting member and the inner mounting member and spaced apart in the axial direction along the central axis of the outer mounting member,
  • a partition member that is partitioned in the axial direction into a first liquid chamber and a second liquid chamber and that has a restriction passage communicating the first liquid chamber and the second liquid chamber is connected to the outer mounting member and the inner mounting member.
  • a vibration isolator including a second main body rubber disposed outside the liquid chamber, and the outer mounting member includes an outer plate member to which the second main body rubber is coupled.
  • the second main body rubber mainly supports the static load applied to the vibration isolator and suppresses the relative displacement in the axial direction of the outer mounting member and the inner mounting member, while the vibration of the axial vibration is suppressed.
  • the first main body rubber is elastically deformed, and the liquid in the liquid chamber is circulated through the restriction passage between the first liquid chamber and the second liquid chamber, thereby attenuating and absorbing the vibration.
  • the anti-vibration rubber and the liquid seal anti-vibration device are directly connected in the axial direction.
  • this type of vibration isolator for example, as shown in Patent Document 1 below, a gap is provided between the inner peripheral surface of the second main body rubber and the outer peripheral surface of the inner mounting member, and the outer plate member is an annular flat plate.
  • the structure formed in the shape is known.
  • a cylindrical outer mounting member connected to one of the vibration generating portion and the vibration receiving portion, and an inner mounting member connected to the other and disposed inside the outer mounting member,
  • a pair of first body rubbers that connect the outer mounting member and the inner mounting member and that are spaced apart in the axial direction along the central axis of the outer mounting member, and a liquid chamber between the pair of first body rubbers
  • a vibration isolator comprising: a partition member in which a restriction passage that connects the first liquid chamber and the second liquid chamber is formed. ing. In this vibration isolator, when axial vibration is input, the liquid in the liquid chamber is circulated through the restricted passage between the first liquid chamber and the second liquid chamber to attenuate and absorb the vibration. be able to.
  • a partition member includes an annular elastic portion whose outer end portion in the radial direction is connected to an outer mounting member, and an inner mounting member inside. And an annular rigid body main body having a radially outer end coupled to the elastic portion, and an orifice groove communicating the first liquid chamber and the second liquid chamber on the outer peripheral surface of the rigid body.
  • an annular rigid body main body having a radially outer end coupled to the elastic portion, and an orifice groove communicating the first liquid chamber and the second liquid chamber on the outer peripheral surface of the rigid body.
  • the outer mounting member includes a first end member to which a pair of first main body rubbers are separately connected, a second end member, a middle member to which a partition member is connected,
  • the outer mounting member includes a first end member to which a pair of first main body rubbers are separately connected, a second end member, a middle member to which a partition member is connected,
  • a partition member comprising:
  • the conventional vibration isolator when the outer diameter of the rigid body is increased in order to increase the damping force to be exhibited, the volume ratio of the rigid body is increased in the liquid chamber. There is a problem that can not be avoided. Further, for example, when the inner attachment member is fitted in the rigid body with the rigid body and the lid and the elastic part assembled, the rigid body and the lid are relatively displaced. There is also a problem that it is difficult to ensure the sealing performance of the orifice groove by the lid.
  • the conventional vibration isolator has room for improvement in weight reduction while ensuring durability.
  • the present invention has been made in view of the above-described circumstances, and in a configuration in which an anti-vibration rubber and a liquid-sealing anti-vibration device are directly connected in the axial direction, the anti-vibration that can attenuate and absorb lateral vibration.
  • An object is to provide a vibration device.
  • the present invention has been made in view of the above-described circumstances, and it is possible to ensure a damping force while suppressing an increase in size, and easily while ensuring a sealing property of an orifice groove by a lid. It aims at providing the vibration isolator which can be assembled. Another object of the present invention is to provide a vibration isolator capable of reducing weight while ensuring durability.
  • a first aspect of the vibration isolator includes a cylindrical outer mounting member connected to one of a vibration generating unit and a vibration receiving unit, and the outer mounting member connected to the other.
  • a pair of first main bodies that connect the inner mounting member disposed inside the outer mounting member and the inner mounting member and that are spaced apart in the axial direction along the central axis of the outer mounting member
  • a restriction passage that partitions the liquid chamber between the rubber and the pair of first main body rubbers into the first liquid chamber and the second liquid chamber in the axial direction and communicates the first liquid chamber and the second liquid chamber.
  • a second main body rubber disposed on the outer side of the liquid chamber, and the outer mounting member is connected to the second mounting rubber, and connects the outer mounting member and the inner mounting member.
  • the material has an outer plate member connected to the main body rubber, and the inner mounting
  • the material is provided with a bound stopper that axially sandwiches a radially inner portion of the outer plate member with the first main body rubber, and of the outer plate member, the bound stopper is opposed in the axial direction.
  • a radially inner portion is embedded in the second main body rubber, and the inner portion of the outer plate member has an annular top wall whose front and back faces in the axial direction, and a shaft extending from the radially inner end of the annular top wall.
  • An inner cylinder portion extending toward the first main body rubber along the direction.
  • a second aspect of the vibration isolator includes a cylindrical outer mounting member connected to one of a vibration generating unit and a vibration receiving unit, and the outer mounting member connected to the other.
  • An inner mounting member disposed inside the A pair of first main body rubbers that connect the outer mounting member and the inner mounting member, and are spaced apart in the axial direction along the central axis of the outer mounting member;
  • a liquid passage between the pair of first main body rubbers is partitioned in the axial direction into a first liquid chamber and a second liquid chamber, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the partition member is An annular elastic portion having a radially outer end connected to the outer mounting member; An inner side of the inner mounting member, and an annular rigid body part having a radially outer end connected to the elastic part,
  • the rigid part is A rigid body having an orifice groove communicating with the first liquid chamber and the second liquid chamber on one end surface facing one side in the axial direction;
  • a lid that is disposed on one end surface of the rigid body and closes the opening on one side in the axial direction of the orifice groove to define the restriction passage;
  • a press-fitting hole into which the lid is press-fitted is formed on one end surface of the rigid body.
  • a third aspect of the vibration isolator according to the present invention includes a cylindrical outer mounting member connected to one of a vibration generating unit and a vibration receiving unit, and the outer mounting member connected to the other, An inner mounting member disposed inside the A pair of first main body rubbers that connect the outer mounting member and the inner mounting member, and are spaced apart in the axial direction along the central axis of the outer mounting member; A liquid passage between the pair of first main body rubbers is partitioned in the axial direction into a first liquid chamber and a second liquid chamber, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the outer mounting member includes a first end member to which a pair of first main body rubbers are separately connected, and a second end member, and an intermediate member to which the partition member is connected,
  • Each of the first end member and the second end member is formed in a plate shape having a thickness in the axial direction
  • the first end member of the outer mounting member is connected to a connected portion provided in any one of a vibration generating portion and a vibration receiving portion,
  • the plate thickness of the first end member is thinner than the plate thickness of the second end member.
  • the vibration in the lateral direction can be attenuated and absorbed in the configuration in which the vibration isolating rubber and the liquid seal vibration isolator are directly connected in the axial direction. Further, according to the present invention, it is possible to ensure a damping force while suppressing an increase in size, and it is possible to easily assemble while ensuring a sealing property of an orifice groove by a lid. Moreover, according to this invention, weight reduction can be achieved, ensuring durability.
  • FIG. 1 is a longitudinal sectional view of a vibration isolator according to first to third embodiments of the present invention.
  • the vibration isolator 1 according to first to third embodiments of the present invention will be described below with reference to the drawings.
  • the vibration isolator 1 according to the first embodiment of the present invention includes a cylindrical outer mounting member 11 connected to one of a vibration generating unit and a vibration receiving unit, and the other.
  • the inner mounting member 12 that is connected and disposed inside the outer mounting member 11, the outer mounting member 11, and the inner mounting member 12 are coupled to each other, and an interval in the axial direction along the central axis O of the outer mounting member 11 is provided.
  • a direction intersecting the central axis O is referred to as a radial direction, and a direction around the central axis O is referred to as a circumferential direction.
  • the liquid chamber 14 is filled with, for example, ethylene glycol, water, silicone oil, or the like.
  • the vibration isolator 1 is applied to, for example, a cabin mount and is used in a state where the axial direction is directed in the vertical direction.
  • the outer mounting member 11 of the vibration isolator 1 includes a first end member 17 and a second end member 18 each having a pair of first main body rubbers 13a and 13b coupled to each other, and a partition.
  • An intermediate member 16 to which the member 15 is connected and an outer plate member 19 to which the second main body rubber 30 is connected are provided.
  • the first end member 17 and the second end member 18 are each formed in a plate shape having a thickness in the axial direction, and the middle member 16 is formed in a cylindrical shape extending in the axial direction.
  • the plate thickness of the first end member 17 is thinner than the plate thickness of the second end member 18.
  • the second end member 18 is formed in an annular shape, and is disposed at one end edge in the axial direction of the middle member 16.
  • the first end member 17 is formed in an annular shape, and is disposed at an end edge on the other side in the axial direction of the middle member 16.
  • the first end member 17, the second end member 18, and the middle member 16 are each arranged coaxially with the central axis O.
  • one side in the axial direction is referred to as the lower side
  • the other side in the axial direction is referred to as the upper side.
  • the first end member 17 of the outer mounting member 11 is connected to a connected portion 35 provided in one of the vibration generating portion and the vibration receiving portion.
  • the coupled portion 35 is coupled to the upper surface of the first end member 17, the middle member 16 is coupled to the lower surface of the first end member 17, and the second end member 18 is coupled to the lower end opening edge of the middle member 16. Yes. That is, the first end member 17 of the outer mounting member 11 is directly connected to the coupled portion 35, and the middle member 16 and the second end member 18 are not directly coupled to the coupled portion 35.
  • An outer plate member 19 is disposed above the first end member 17, and the first end member 17 and the outer plate member 19 sandwich the connected portion 35 in the axial direction.
  • the first end member 17, the second end member 18, the intermediate member 16, and the outer plate member 19 are integrally fixed to the first end member 17, the second end member 18, the intermediate member 16, and the outer plate member 19. And the insertion hole 11a in which the volt
  • the bolt 36 is inserted from the second end member 18 side, and the first end member 17, the second end member 18, the middle member 16, and the outer plate member 19 are integrated together with the coupled portion 35. It penetrates in the axial direction.
  • a nut 37 is screwed into a portion of the bolt 36 that protrudes upward from the outer plate member 19, whereby the first end member 17, the second end member 18, the intermediate member 16, and the outer plate member 19 are integrated.
  • the first end member 17 is fixed and connected to the connected portion 35.
  • the bolt 36 is press-fitted into a portion formed in the first end member 17 and a portion formed in the second end member 18 in the insertion hole 11 a, and a portion formed in the intermediate member 16 and the outer plate member 19.
  • the part formed in is loosely fitted.
  • a plurality of insertion holes 11a are arranged at intervals in the circumferential direction.
  • bolt 36 may be fitted only in the part formed in the 2nd end member 18 among the insertion holes 11a.
  • the first end member 17 is provided with a first projecting portion 17 a that projects inward in the radial direction and constitutes a part of the wall surface of the liquid chamber 14.
  • the first projecting portion 17 a projects from the inner peripheral edge of the first end member 17 toward the inside in the radial direction.
  • the first projecting portion 17 a is formed in a cylindrical shape and is fitted in the upper end portion of the middle member 16.
  • the first protrusion 17 a is larger in the axial direction than the first end member 17.
  • the first protrusion 17a is disposed coaxially with the central axis O.
  • An injection hole 17b that penetrates the first protrusion 17a in the axial direction and opens into the liquid chamber 14 is formed in the first protrusion 17a, and a sealing material 39 such as a rivet is attached to the injection hole 17b.
  • the sealing material 39 is covered with the outer plate member 19 from above the sealing material 39.
  • the upper end opening edge of the first projecting portion 17 a is covered with the outer plate member 19 over the entire area of the first end member 17 as well as the upper surface thereof.
  • a depression is formed at the upper opening edge of the first protrusion 17a, and an injection hole 17b is formed at the bottom of the depression.
  • the size in the axial direction at the portion where the injection hole 17 b is located is equal to the plate thickness of the first end member 17.
  • the second end member 18 is provided with a second projecting portion 18a that projects inward in the radial direction and constitutes a part of the wall surface of the liquid chamber 14.
  • the second protrusion 18 a protrudes from the inner peripheral edge of the second end member 18 toward the inside in the radial direction.
  • the second projecting portion 18 a is formed in a cylindrical shape and is fitted in the lower end portion of the middle member 16.
  • the second protrusion 18 a is larger in the axial direction than the second end member 18.
  • the second protrusion 18 a is disposed coaxially with the central axis O.
  • the outer plate member 19 is formed in an annular shape and is arranged coaxially with the central axis O.
  • the outer plate member 19 includes an inner portion 19 a embedded in the second main body rubber 30, and an outer portion 19 b protruding from the second main body rubber 30 outward in the radial direction.
  • the inner portion 19a includes an annular top wall 19c whose front and back faces in the axial direction, an inner cylindrical portion 19d extending downward from a radially inner end of the annular top wall 19c, and a radially outer portion of the annular top wall 19c.
  • An outer cylinder portion 19e extending downward from the end portion.
  • the lower end opening edge of the inner cylinder portion 19d is opposed to the upper first main body rubber 13a positioned above the pair of first main body rubbers 13a and 13b in the axial direction.
  • the lower end opening edge of the inner cylinder portion 19d faces the radial intermediate portion of the upper first main body rubber 13a in the axial direction.
  • the outer portion 19b extends from the lower end portion of the outer cylinder portion 19e toward the outer side in the radial direction, and is formed in an annular shape.
  • the outer portion 19b is formed in a plate shape whose front and back faces in the axial direction.
  • the lower surface of the outer portion 19 b is coupled to the coupled portion 35 and faces the upper surface of the first end member 17 in the axial direction via the coupled portion 35.
  • the outer mounting member 11 is not limited to the illustrated form, and may be modified as appropriate, for example, as a whole.
  • the second main body rubber 30 is disposed above the pair of first main body rubbers 13a and 13b.
  • the second main body rubber 30 is adjacent to the upper first main body rubber 13a connected to the first end member 17 in the axial direction among the pair of first main body rubbers 13a and 13b.
  • the second main body rubber 30 is formed in a cylindrical shape and is arranged coaxially with the central axis O.
  • the inner side of the second main body rubber 30 is a mounting hole 30a penetrating the second main body rubber 30 in the axial direction, and the inner mounting member 12 is press-fitted into the mounting hole 30a.
  • the inner mounting member 12 is disposed inside the outer mounting member 11 in the radial direction.
  • the inner mounting member 12 has a cylindrical shape and is arranged coaxially with the central axis O.
  • the outer peripheral surface of the inner mounting member 12 is substantially parallel to the inner peripheral surface of the inner cylinder portion 19 d of the outer plate member 19. Both end portions in the axial direction of the inner mounting member 12 are positioned outside in the axial direction from the outer mounting member 11.
  • the upper end portion of the inner mounting member 12 is located above the second main body rubber 30.
  • a bound stopper 41 is disposed at the upper end portion of the inner mounting member 12, and a rebound stopper 42 is disposed at the lower end portion of the inner mounting member 12.
  • Each of the bound stopper 41 and the rebound stopper 42 is formed in an annular shape and is disposed coaxially with the central axis O.
  • Each of the bound stopper 41 and the rebound stopper 42 is formed in a plate shape with the front and back surfaces facing the axial direction.
  • the bound stopper 41 faces the inner portion 19a of the outer plate member 19 in the axial direction, and sandwiches the inner portion 19a of the outer plate member 19 in the axial direction between the upper first main body rubber 13a.
  • the lower surface facing the outer plate member 19 in the axial direction is substantially parallel to the upper surface of the annular top wall 19 c of the outer plate member 19.
  • a bound stopper rubber 41a is disposed on the lower surface of the bound stopper 41.
  • the bound stopper rubber 41a is bonded to the bound stopper 41.
  • the bound stopper rubber 41a extends continuously over the entire circumference.
  • the bound stopper rubber 41 a is formed integrally with the second main body rubber 30.
  • the radially inner portion is connected to the inner peripheral portion of the second main body rubber 30 in the axial direction, and the lower surface of the outer radial portion is the upper surface of the outer peripheral portion of the second main rubber 30. , Facing each other with a gap in the axial direction.
  • the lower surface of the radially outer portion of the bound stopper rubber 41 a faces the annular top wall 19 c of the outer plate member 19 in the axial direction through the outer peripheral portion of the second main body rubber 30.
  • the rebound stopper 42 faces the second protrusion 18a in the axial direction.
  • a rebound stopper rubber 42a is provided on the second projecting portion 18a so as to project toward the opposite side of the liquid chamber 14 along the axial direction, that is, downward, and face the upper surface of the rebound stopper 42 in the axial direction.
  • the rebound stopper rubber 42a is disposed on the radially inner peripheral portion of the second protrusion 18a, and faces the outer peripheral portion of the rebound stopper 42 in the axial direction.
  • the rebound stopper rubber 42a extends continuously over the entire circumference.
  • the rebound stopper rubber 42a is formed integrally with the lower first main body rubber (one-side first main body rubber) 13b located on the lower side of the pair of first main body rubbers 13a and 13b.
  • the lower surface of the rebound stopper rubber 42 a is positioned below the lower surface of the second end member 18.
  • the rebound stopper rubber 42 a is disposed on the second end member 18 via the second protrusion 18 a, but may be disposed directly on the second end member 18.
  • the upper first main body rubber 13a is formed in an annular shape that gradually extends downward from the inner side to the outer side in the radial direction.
  • the radially inner end portion is bonded to the outer peripheral surface of the inner mounting member 12, and the radially outer end portion is bonded to the first projecting portion 17a.
  • the upper first main body rubber 13a is connected to the first end member 17 via the first projecting portion 17a.
  • the lower first main body rubber 13b is formed in an annular shape that gradually extends downward as it goes from the inner side to the outer side in the radial direction.
  • the radially inner end is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the radially outer end is bonded to the second protrusion 18a. Yes.
  • the lower first main body rubber 13b is connected to the second end member 18 via the second protrusion 18a.
  • the upper first main body rubber 13a adjacent to the second main body rubber 30 in the axial direction faces upward (the side opposite to the liquid chamber 14 side along the axial direction), and the first The outer surface facing the two-body rubber 30 in the axial direction is inclined with respect to both the radial direction and the axial direction in a longitudinal sectional view along the axial direction.
  • the outer surface of the upper first main body rubber 13a gradually extends downward from the inner side to the outer side in the radial direction.
  • the outer surface of the upper first main body rubber 13a is gradually separated from the outer plate member 19 in the axial direction as it goes from the inner side to the outer side in the radial direction.
  • the partition member 15 has an annular shape and is disposed in the liquid chamber 14.
  • the outer peripheral surface of the partition member 15 is connected to the inner peripheral surface of the outer mounting member 11, and the inner peripheral surface of the partition member 15 is connected to the outer peripheral surface of the inner mounting member 12.
  • the partition member 15 partitions the liquid chamber 14 into a first liquid chamber 26 and a second liquid chamber 27 in the axial direction.
  • the volume of the first liquid chamber 26 located on the upper side is smaller than the volume of the second liquid chamber 27 located on the lower side.
  • the volume of the first liquid chamber 26 may be greater than or equal to the volume of the second liquid chamber 27.
  • the partition member 15 is formed with a restriction passage 21 that allows the first liquid chamber 26 and the second liquid chamber 27 to communicate with each other.
  • the restriction passage 21 extends over 360 ° around the central axis O.
  • the partition member 15 has an annular elastic portion 32 whose outer end portion in the radial direction is connected to the outer mounting member 11, and the inner mounting member 12 is fitted inside, and the outer end portion in the radial direction is the elastic portion 32. And an annular rigid body portion 33 connected thereto.
  • Each of the elastic portion 32 and the rigid portion 33 is disposed coaxially with the central axis O.
  • the elastic part 32 is formed of, for example, a rubber material having a lower hardness than the rigid part 33.
  • the radially inner end of the elastic portion 32 and the radially outer end of the rigid portion 33 are connected to each other.
  • the elastic portion 32 is bonded to the inner peripheral surface of the middle member 16 of the outer attachment member 11 and the radially outer end portion of the rigid portion 33.
  • the elastic portion 32 gradually extends downward as it goes from the inner side to the outer side in the radial direction.
  • a step portion 12 a formed on the outer peripheral surface of the inner mounting member 12 is in contact with the upper surface of the inner end portion in the radial direction of the rigid portion 33.
  • the rigid portion 33 includes a rigid portion main body 34 in which an orifice groove 33a that communicates the first liquid chamber 26 and the second liquid chamber 27 is formed on the lower surface (one end surface facing one side in the axial direction), and the rigid portion main body. 34, and a lid 22 that defines the restriction passage 21 by closing the lower opening of the orifice groove 33a.
  • the rigid body main body 34 and the lid body 22 are arranged coaxially with the central axis O, respectively.
  • the rigid body 34 is larger in axial size and radial size than the lid 22.
  • a press-fitting hole 34 a into which the lid 22 is press-fitted is formed on the lower surface of the rigid part main body 34.
  • the depth of the press-fit hole 34 a is larger than the size of the lid 22 in the axial direction.
  • An orifice groove 33a is opened at the bottom surface of the press-fitting hole 34a.
  • On the lower surface of the rigid portion main body 34 the inner peripheral edge located on the inner side in the radial direction from the press-fit hole 34a is located above the outer peripheral edge located on the outer side in the radial direction from the press-fit hole 34a.
  • the lower surface of the lid body 22 is flush with the inner peripheral edge of the lower surface of the rigid body main body 34.
  • a first opening 34b is formed on the upper surface of the rigid portion main body 34. The first opening 34b opens at one end in the circumferential direction of the orifice groove 33a.
  • a second opening 22a is formed in the lid 22 so as to open at the other end in the circumferential direction of the orific
  • a support fitting 23 is embedded in the lower first main body rubber 13b so as to sandwich the lid 22 between the bottom surface of the press-fitting hole 34a.
  • the support fitting 23 is formed in a cylindrical shape and is arranged coaxially with the central axis O.
  • the support fitting 23 is embedded in the inner peripheral edge of the lower first main body rubber 13b.
  • the upper end opening edge of the support fitting 23 is flush with or slightly below the upper surface of the inner peripheral edge of the lower first main body rubber 13b.
  • the upper end opening edge of the support fitting 23 supports the inner peripheral edge of the lower surface of the lid body 22.
  • the upper end opening edge of the support fitting 23 may support the outer peripheral edge portion or the radial intermediate portion on the lower surface of the lid body 22.
  • the upper end portion of the support fitting 23 has a larger inner diameter and outer diameter than the portion located below the upper end portion, and is positioned on the outer side in the radial direction.
  • a part of the lower first main body rubber 13 b is filled inside the upper end portion of the support fitting 23.
  • a portion (hereinafter referred to as an annular seal portion) 13c located inside the upper end portion of the support fitting 23 continuously extends over the entire circumference.
  • the annular seal portion 13 c is in pressure contact across the lower surface of the lid body 22 and the lower surface of the rigid body main body 34.
  • the annular seal portion 13 c is in pressure contact with the inner peripheral edge portion of the lower surface of each of the lid body 22 and the rigid body main body 34.
  • the second main body rubber 30 mainly supports the static load applied to the vibration isolator 1, and the outer mounting member 11 and the inner side. While the relative displacement in the axial direction of the mounting member 12 is suppressed, the first main body rubbers 13a and 13b are elastically deformed when the axial vibration is input, and the liquid in the liquid chamber 14 is changed into the first liquid chamber 26 and the second liquid. Vibration can be attenuated and absorbed by flowing through the restricted passage 21 between the chamber 27 and the chamber 27. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the inner part 19a which is opposed to the bound stopper 41 in the outer plate member 19 in the axial direction and is embedded in the second main body rubber 30 includes the annular top wall 19c whose front and back faces in the axial direction, Excessive relative displacement of the outer mounting member 11 and the inner mounting member 12 in the bounce direction in which the stopper 41 and the outer plate member 19 are relatively close to each other in the axial direction can be suppressed, and the relative displacement amount can be accurately determined. Can be adjusted.
  • the inner portion 19a of the outer plate member 19 includes the inner cylinder portion 19d extending downward from the radial inner end portion of the annular top wall 19c, the inner peripheral surface of the inner cylinder portion 19d and the inner attachment member 12 can be made to face each other via the second main body rubber 30, and the inner peripheral surface of the inner cylinder portion 19 d and the inner side of the second main body rubber 30 when the lateral vibration is input.
  • a damping force can be generated by elastically deforming a portion located between the outer peripheral surface of the mounting member 12. As a result, vibrations in two directions, the axial direction and the lateral direction, can be attenuated and absorbed.
  • the bound stopper rubber 41a is disposed on the lower surface facing the outer plate member 19 in the axial direction. Therefore, excessive relative displacement between the outer mounting member 11 and the inner mounting member 12 in the bound direction.
  • restraining it becomes possible to make the part which covers the cyclic
  • the inner mounting member 12 is press-fitted into the mounting hole 30 a of the second main body rubber 30, among the second main body rubber 30, in particular, the inner peripheral surface of the inner cylindrical portion 19 d and the outer peripheral surface of the inner mounting member 12. It is possible to easily adjust the hardness of the portion positioned between the two and the damping force exerted by the second main body rubber 30 when inputting lateral vibration can be adjusted easily and accurately.
  • the outer surface of the upper first main body rubber 13a adjacent to the second main body rubber 30 in the axial direction is radially and axially viewed in a longitudinal sectional view along the axial direction. Since it is inclined with respect to both directions, an axial distance between the outer surface and the lower end portion of the inner cylindrical portion 19d can be secured, and interference between the two can be suppressed.
  • the lower first main body rubber 13b is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the upper first main body rubber 13a is bonded to the outer peripheral surface of the inner mounting member 12.
  • the upper first main body rubber 13a is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the lower first main body rubber 13b is bonded to the outer peripheral surface of the inner mounting member 12.
  • Other configurations may be adopted.
  • gum 13a showed the structure extended toward the downward gradually as it went outside from the inner side of radial direction
  • gum 13a was shown. May extend gradually downward from the outside in the radial direction to the inside, or may extend straight in the radial direction.
  • the support metal fitting 23 is embedded in the lower first main body rubber 13b.
  • the lid body 22 is formed by the lower first main body rubber 13b in which the support metal fitting 23 is not embedded. May be sandwiched between the bottom surface of the press-fitting hole 34a.
  • gum 13b showed the structure pressed across the lower surface of the cover body 22 and the lower surface of the rigid part main body 34, the lower 1st main body rubber
  • a configuration that does not contact both the lower surface of the lid body 22 and the lower surface of the rigid body main body 34 or a configuration that contacts either one of the lower surface of the lid body 22 or the lower surface of the rigid body main body 34 is adopted. May be.
  • the second main body rubber 30 is disposed above the pair of first main body rubbers 13 a and 13 b, and the outer plate member 19 is disposed above the first end member 17.
  • the configuration is shown, a configuration in which the second main body rubber 30 is disposed below the pair of first main body rubbers 13a and 13b and the outer plate member 19 is disposed below the second end member 18 is adopted. May be.
  • the second main body rubber 30 may be bonded to the outer peripheral surface of the inner mounting member 12.
  • the 1st protrusion part 17a was arrange
  • a configuration in which the first main body rubbers 13 a and 13 b are directly connected to the first end member 17 and the second end member 18 without having the portion 17 a and the second projecting portion 18 a may be employed.
  • the plate thickness of the first end member 17 may be equal to or greater than the plate thickness of the second end member 18.
  • the injection hole 17b is not limited to the first protrusion 17a, and may be formed in the second protrusion 18a or the outer mounting member 11, for example, and the first protrusion 17a has an axial size.
  • the first end member 17 may be formed at a portion different from the plate thickness, or a vibration isolator having no injection hole 17b may be employed.
  • the sealing material 39 may be exposed to the outside of the vibration isolator 1.
  • the present invention is also applicable to a vibration isolator that does not have the bound stopper rubber 41a, the rebound stopper 42, and the rebound stopper rubber 42a.
  • the partition member 15 is configured to include the elastic portion 32 and the rigid body portion 33.
  • the configuration is not limited to such an aspect.
  • a configuration including only the rigid body portion is employed.
  • the restriction passage 21 may extend less than 360 ° around the central axis O.
  • the orifice groove 33 a may be formed on the outer peripheral surface of the rigid body main body 34.
  • the vibration isolator 1 is not limited to the cabin mount of the vehicle, but can be applied to other than the cabin mount.
  • the present invention can be applied to engine mounts and bushes for vehicles, generator mounts mounted on construction machines, or to machine mounts installed in factories and the like.
  • a vibration isolator according to the present invention is connected to one of a vibration generating portion and a vibration receiving portion, and to a cylindrical outer mounting member, and to the other, and is disposed inside the outer mounting member.
  • a pair of first main body rubbers that connect the inner mounting member, the outer mounting member, and the inner mounting member, and that are spaced apart in the axial direction along the central axis of the outer mounting member;
  • a partition in which the liquid chamber between the first main body rubbers is partitioned into a first liquid chamber and a second liquid chamber in the axial direction, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the outer mounting member being connected to the second main body rubber.
  • An outer plate member, the inner mounting member, A bound stopper that axially sandwiches a radially inner portion of the outer plate member between one main body rubber and a radially inner portion of the outer plate member that faces the bound stopper in the axial direction is disposed.
  • the inner portion of the outer plate member includes an annular top wall whose front and back faces in the axial direction, and an axially extending inner end portion of the annular top wall along the axial direction. And an inner cylinder portion extending toward the first main body rubber side.
  • the second main body rubber mainly supports the static load applied to the vibration isolator, and suppresses the relative displacement in the axial direction of the outer mounting member and the inner mounting member, while the axial vibration.
  • the first main rubber is elastically deformed, and the liquid in the liquid chamber can be circulated between the first liquid chamber and the second liquid chamber through the restriction passage, so that the vibration can be attenuated and absorbed. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the inner portion facing the bound stopper in the axial direction and embedded in the second main body rubber includes an annular top wall whose front and rear surfaces face the axial direction, so the bound stopper and the outer plate member.
  • the inner portion of the outer plate member includes an inner cylinder portion extending from the radial inner end portion of the annular top wall toward the first main body rubber side along the axial direction, the inner peripheral surface of the inner cylinder portion and The outer peripheral surface of the inner mounting member can be opposed to each other via the second main body rubber, and the inner peripheral surface of the inner cylinder portion and the inner side of the second main body rubber when the lateral vibration is input.
  • a damping force can be generated by elastically deforming a portion positioned between the outer peripheral surface of the mounting member. As a result, vibrations in two directions, the axial direction and the lateral direction, can be attenuated and absorbed.
  • a bound stopper rubber may be disposed on a surface facing the outer plate member in the axial direction.
  • the bound stopper rubber is disposed on the surface facing the outer plate member in the axial direction in the bound stopper, when excessive relative displacement of the outer mounting member and the inner mounting member in the bound direction is suppressed.
  • the portion of the second main body rubber that covers the annular top wall can be brought into contact with the bound stopper via the bound stopper rubber, and the durability of the second main body rubber can be ensured.
  • a mounting hole penetrating in the axial direction may be formed in the second main body rubber, and the inner mounting member may be press-fitted into the mounting hole.
  • the inner mounting member is press-fitted into the mounting hole of the second main body rubber, among the second main body rubber, in particular, it is positioned between the inner peripheral surface of the inner cylinder portion and the outer peripheral surface of the inner mounting member. It is possible to easily adjust the hardness of the portion to be adjusted, and it is possible to easily and accurately adjust the damping force exerted by the second main body rubber when inputting lateral vibration.
  • the first main body rubber that is adjacent to the second main body rubber in the axial direction faces the opposite side of the liquid chamber side along the axial direction
  • the second main body rubber has a shaft.
  • the outer surfaces facing in the direction may be inclined with respect to both the radial direction and the axial direction in a longitudinal sectional view along the axial direction.
  • the outer surface of the first main body rubber adjacent to the second main body rubber in the axial direction is in a longitudinal sectional view along the axial direction with respect to both the radial direction and the axial direction. Since it is inclined, it is possible to secure an axial distance between the outer surface and the end portion of the inner cylinder portion on the first main body rubber side, and to suppress interference between the two.
  • the second embodiment of the vibration isolator 1 includes a cylindrical outer mounting member 11 connected to one of a vibration generating unit and a vibration receiving unit, and the other side connected to the other side.
  • An inner mounting member 12 disposed inside the mounting member 11;
  • a pair of first main body rubbers that connect the outer mounting member 11 and the inner mounting member 12 and that are spaced apart in the axial direction along the central axis of the outer mounting member 11;
  • a liquid passage between the pair of first main body rubbers is divided into a first liquid chamber and a second liquid chamber in the axial direction, and the restriction passage 21 communicates the first liquid chamber 26 and the second liquid chamber 27.
  • a partition member 15 formed with The partition member 15 is An annular elastic portion 32 having a radially outer end connected to the outer mounting member 11; An annular rigid body portion 33 having the inner mounting member 12 fitted therein and a radially outer end portion coupled to the elastic portion,
  • the rigid portion 33 is A rigid body 34 having an orifice groove 33a communicating with the first liquid chamber and the second liquid chamber on one end surface facing one side in the axial direction;
  • a lid 22 which is disposed on one end surface of the rigid body main body 34 and defines the restriction passage 21 by closing an opening on one axial side of the orifice groove 33a;
  • a press-fitting hole 34 a into which the lid is press-fitted is formed on one end surface of the rigid body main body 34.
  • path 21 is formed in the lower surface which faces the one side of an axial direction instead of the outer peripheral surface of the rigid part main body 34. Therefore, even if the restricting passage 21 extends beyond 360 ° around the central axis O, the axial length of the rigid body 34 can be kept short. Therefore, even if the outer diameter of the rigid body main body 34 is increased in order to increase the damping force exerted by the vibration isolator 1, it becomes possible to suppress the volume ratio of the rigid body portion 33 in the liquid chamber 14. The enlargement of the vibration device 1 can be suppressed.
  • the relative movement direction of the inner attachment member 12 when the inner attachment member 12 is fitted into the rigid body portion 34 and the direction in which the lid 22 closes the orifice groove 33a are both coincided with each other in the axial direction. Therefore, the assembly of the rigid body main body 34 and the lid body 22 and the assembly of the rigid body main body 34 and the inner mounting member 12 can be easily performed using, for example, the same device. At the time of assembling, it becomes possible to prevent the rigid body part 34 and the lid body 22 from being relatively displaced so as to open the opening of the orifice groove 33a on the lower surface of the rigid body part body 34. The sealing performance of the orifice groove 33a by the body 22 can be reliably ensured.
  • the lid 22 that defines the restriction passage 21 is press-fitted into a press-fit hole 34a formed in the lower surface of the rigid portion main body 34, for example, the lid 22 is attached to the rigid portion main body 34 using a fastening member.
  • the above-described assembly can be performed without fixing, fixing the lid 22 by caulking to the rigid body 34, or disposing a packing member between the lid 22 and the rigid body 34.
  • the lid 22 can reliably seal the orifice groove 33a.
  • the support metal fitting 23 is embedded in the lower first main body rubber 13b pressed against the outer peripheral surface of the inner mounting member 12 in a non-adhered state, the inner mounting member 12 is fitted into the lower first main body rubber 13b.
  • the orifice groove 33a can be more reliably sealed by the lid body 22.
  • the gap between the lid body 22 and the rigid portion main body 34 is within the orifice groove 33a. It becomes possible to suppress the leakage of the liquid, and the sealing performance of the orifice groove 33a can be improved.
  • the second main body rubber 30 mainly supports the static load applied to the vibration isolator 1 and the axial directions of the outer mounting member 11 and the inner mounting member 12 are the same. While the vibration is input, the first main body rubbers 13a and 13b are elastically deformed to allow the liquid in the liquid chamber 14 to pass between the first liquid chamber 26 and the second liquid chamber 27. The vibration can be attenuated and absorbed by circulating through. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the orifice groove 33a forming the restriction passage 21 is formed in the lower surface of the rigid body main body 34, and the axial length of the rigid body main body 34 can be kept short.
  • the vibration isolator 1 as a whole can be prevented from being bulky in the axial direction.
  • the lower first main body rubber 13b is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the upper first main body rubber 13a is bonded to the outer peripheral surface of the inner mounting member 12.
  • the upper first main body rubber 13a is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the lower first main body rubber 13b is bonded to the outer peripheral surface of the inner mounting member 12.
  • Other configurations may be adopted.
  • gum 13a showed the structure extended toward the downward gradually as it went outside from the inner side of radial direction
  • gum 13a was shown. May extend gradually downward from the outside in the radial direction to the inside, or may extend straight in the radial direction.
  • the cover body 22 was shown by the lower 1st main body rubber
  • gum 13b showed the structure pressed across the lower surface of the cover body 22 and the lower surface of the rigid part main body 34, the lower 1st main body rubber
  • the second main body rubber 30 is disposed above the pair of first main body rubbers 13 a and 13 b, and the outer plate member 19 is disposed above the first end member 17.
  • the configuration is shown, a configuration in which the second main body rubber 30 is disposed below the pair of first main body rubbers 13a and 13b and the outer plate member 19 is disposed below the second end member 18 is adopted. May be.
  • the second main body rubber 30 may be bonded to the outer peripheral surface of the inner mounting member 12.
  • the present invention is also applicable to a vibration isolator that does not have the second main body rubber 30.
  • the 1st protrusion part 17a was arrange
  • a configuration in which the first main body rubbers 13 a and 13 b are directly connected to the first end member 17 and the second end member 18 without having the portion 17 a and the second projecting portion 18 a may be employed.
  • the plate thickness of the first end member 17 may be equal to or greater than the plate thickness of the second end member 18.
  • the injection hole 17b is not limited to the first protrusion 17a, and may be formed in the second protrusion 18a or the outer mounting member 11, for example, and the first protrusion 17a has an axial size.
  • the first end member 17 may be formed at a portion different from the plate thickness, or a vibration isolator having no injection hole 17b may be employed.
  • the sealing material 39 may be exposed to the outside of the vibration isolator 1.
  • the inner portion 19a of the outer plate member 19 a configuration without the annular top wall 19c, the inner cylinder portion 19d, and the outer cylinder portion 19e may be adopted.
  • the present invention is also applicable to a vibration isolator that does not include the bound stopper 41, the bound stopper rubber 41a, the rebound stopper 42, and the rebound stopper rubber 42a.
  • the vibration isolator 1 is not limited to the cabin mount of the vehicle, but can be applied to other than the cabin mount.
  • the present invention can be applied to engine mounts and bushes for vehicles, generator mounts mounted on construction machines, or to machine mounts installed in factories and the like.
  • a vibration isolator according to the present invention is connected to one of a vibration generating portion and a vibration receiving portion, and to a cylindrical outer mounting member, and to the other, and is disposed inside the outer mounting member.
  • a pair of first main body rubbers that connect the inner mounting member, the outer mounting member, and the inner mounting member, and that are spaced apart in the axial direction along the central axis of the outer mounting member;
  • a partition in which the liquid chamber between the first main body rubbers is partitioned into a first liquid chamber and a second liquid chamber in the axial direction, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the partition member includes an annular elastic portion whose outer end portion in the radial direction is connected to the outer mounting member, and the outer end portion in the radial direction in which the inner mounting member is fitted inside.
  • An annular rigid body portion connected to the elastic portion, and the rigid body portion
  • a rigid body having an orifice groove communicating with the first liquid chamber and the two liquid chambers at one end face facing one side in the axial direction; and the orifice disposed on one end face of the rigid body.
  • a lid that defines the restriction passage by closing an opening on one axial side of the groove, and a press-fitting hole into which the lid is press-fitted is formed on one end surface of the rigid body. ing.
  • the restriction passage is formed not on the outer peripheral surface of the rigid body main body but on one end face facing the one side in the axial direction, the restriction passage is formed around the central axis, for example. Even if it extends beyond 360 °, the axial length of the rigid body can be kept short. Therefore, in order to increase the damping force exerted by the vibration isolator, even if the outer diameter of the rigid body is increased, it is possible to reduce the proportion of the volume of the rigid body in the liquid chamber. Can be suppressed.
  • the rigid body since the relative moving direction of the inner mounting member when fitting the inner mounting member in the rigid body portion and the direction in which the lid closes the orifice groove are coincident with each other in the axial direction, the rigid body
  • the assembly of the body part and the lid body and the assembly of the rigid body part body and the inner mounting member can be easily performed, for example, using the same device. It is possible to prevent relative displacement of the main body and lid so as to open the orifice groove opening on one end face of the rigid body, and ensure the sealing performance of the orifice groove by the lid. can do.
  • the lid that defines the restriction passage is press-fitted into a press-fitting hole formed in one end face of the rigid body, for example, the lid is fixed to the rigid body using a fastening member, Even if the body is crimped and fixed to the rigid body, or a packing member is not disposed between the lid and the rigid body, the lid groove ensures the orifice groove when assembling as described above. Can be sealed.
  • one side first body rubber located on one side in the axial direction is pressed against the outer peripheral surface of the inner mounting member in a non-adhered state, and the one side first body A support fitting for sandwiching the lid body with the bottom surface of the press-fitting hole may be embedded in rubber.
  • the support metal fitting is embedded in the first side main body rubber that is pressed against the outer peripheral surface of the inner side mounting member in a non-adhered state, when the inner side mounting member is fitted into the first side main body rubber, The support bracket can be abutted against the lid body in the axial direction toward the rigid body body, and the lid body can be strongly pressed against the bottom surface of the press-fitting hole of the rigid body body. Can be sealed.
  • the one first main body rubber located on one side in the axial direction is one end surface of the lid that faces one side in the axial direction, and one of the rigid body main bodies. You may press-contact over an end surface.
  • outer mounting member and the inner mounting member may be connected, and a second main body rubber disposed outside the liquid chamber may be provided.
  • the second main body rubber mainly supports the static load applied to the vibration isolator, and suppresses the relative displacement in the axial direction of the outer mounting member and the inner mounting member.
  • vibration can be attenuated and absorbed. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the orifice groove forming the restriction passage is formed on one end surface of the rigid body, and the length of the rigid body in the axial direction is kept short. In spite of the configuration in which the seal vibration isolator is directly connected in the axial direction, it is possible to suppress the entire vibration isolator from being bulky in the axial direction.
  • the third embodiment of the vibration isolator 1 according to the present invention will be described with reference to FIG. 1 in the same manner as the first embodiment.
  • the same parts as those in the first embodiment are omitted, and only different points are described.
  • 3rd Embodiment of the vibration isolator 1 which concerns on this invention is connected with the cylindrical outer side attachment member 11 connected with either one of a vibration generation part and a vibration receiving part, and the other, and the said outer side An inner mounting member 12 disposed inside the mounting member 11; A pair of first main body rubbers that connect the outer mounting member 11 and the inner mounting member 12 and that are spaced apart in the axial direction along the central axis of the outer mounting member 11; A liquid passage between the pair of first main body rubbers is partitioned in the axial direction into a first liquid chamber and a second liquid chamber, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the outer mounting member 11 includes a first end member 17 and a second end member 18 to which a pair of first body rubbers 13a and 13b are separately connected, and an intermediate member 16 to which the partition member 15 is connected, With Each of the first end member and the second end member is formed in a plate shape having a thickness in the axial direction, The first end member of the outer mounting member 11 is connected to a connected portion 35 provided in any one of a vibration generating portion and a vibration receiving portion, The plate thickness of the first end member is thinner than the plate thickness of the second end member.
  • the first end Since the plate thickness of the member 17 is thinner than the plate thickness of the second end member 18, the vibration isolator 1 can be reduced in weight.
  • the first end member 17 having a small plate thickness is connected to the connected portion 35 provided in one of the vibration generating portion and the vibration receiving portion, the first end member 17 is supported by the connected portion 35. As a result, it is possible to suppress a decrease in strength due to the thin first end member 17, and the durability of the vibration isolator 1 can be ensured.
  • the rebound stopper rubber 42a that contacts the rebound stopper 42 is obtained.
  • the outer mounting member in the rebound direction while ensuring durability. 11 and the excessive displacement of the inner mounting member 12 can be suppressed.
  • the bolt 36 is press-fitted into the insertion hole 11 a formed in the thick second end member 18, the bolt 36 can be strongly fixed to the outer mounting member 11.
  • the second main body rubber 30 mainly supports the static load applied to the vibration isolator 1 and the axial direction of the outer mounting member 11 and the inner mounting member 12 is axial. While restraining the relative displacement, the first main body rubbers 13a and 13b are elastically deformed and the liquid in the liquid chamber 14 is restricted between the first liquid chamber 26 and the second liquid chamber 27 when an axial vibration is input. By flowing through the passage 21, vibration can be attenuated and absorbed. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the first end member 17 having a small plate thickness sandwiches the connected portion 35 in the axial direction between the first end member 17 and the outer plate member 19 to which the second main body rubber 30 is connected, the first end member 17 is in the axial direction. Therefore, it is possible to reliably suppress a decrease in strength due to the thickness of the first end member 17, and flying objects such as stone collide with the first end member 17. Can be suppressed, and the durability of the vibration isolator 1 can be reliably ensured.
  • the sealing material 39 can be easily formed in the injection hole 17b. Can be installed. Moreover, since the sealing material 39 is covered with the outer plate member 19, it is possible to prevent flying objects such as stones from colliding with the sealing material 39, thereby improving the durability of the vibration isolator 1. It can be surely secured.
  • the lower first main body rubber 13b is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the upper first main body rubber 13a is bonded to the outer peripheral surface of the inner mounting member 12.
  • the upper first main body rubber 13a is pressed against the outer peripheral surface of the inner mounting member 12 in an unbonded state, and the lower first main body rubber 13b is bonded to the outer peripheral surface of the inner mounting member 12.
  • Other configurations may be adopted.
  • gum 13a showed the structure extended toward the downward gradually as it went outside from the inner side of radial direction
  • gum 13a was shown. May extend gradually downward from the outside in the radial direction to the inside, or may extend straight in the radial direction.
  • the support metal fitting 23 is embedded in the lower first main body rubber 13b.
  • the lid body 22 is formed by the lower first main body rubber 13b in which the support metal fitting 23 is not embedded. May be sandwiched between the bottom surface of the press-fitting hole 34a.
  • gum 13b showed the structure pressed across the lower surface of the cover body 22 and the lower surface of the rigid part main body 34, the lower 1st main body rubber
  • a configuration that does not contact both the lower surface of the lid body 22 and the lower surface of the rigid body main body 34 or a configuration that contacts either one of the lower surface of the lid body 22 or the lower surface of the rigid body main body 34 is adopted. May be.
  • the second main body rubber 30 is disposed above the pair of first main body rubbers 13 a and 13 b, and the outer plate member 19 is disposed above the first end member 17.
  • the configuration is shown, a configuration in which the second main body rubber 30 is disposed below the pair of first main body rubbers 13a and 13b and the outer plate member 19 is disposed below the second end member 18 is adopted. May be.
  • the second main body rubber 30 may be bonded to the outer peripheral surface of the inner mounting member 12.
  • the present invention is also applicable to a vibration isolator that does not have the second main body rubber 30.
  • the 1st protrusion part 17a was arrange
  • a configuration in which the first main body rubbers 13 a and 13 b are directly connected to the first end member 17 and the second end member 18 without having the portion 17 a and the second projecting portion 18 a may be employed.
  • the injection hole 17b is not limited to the first protrusion 17a, and may be formed in the second protrusion 18a or the outer mounting member 11, for example, and the first protrusion 17a has an axial size.
  • the first end member 17 may be formed at a portion different from the plate thickness, or a vibration isolator having no injection hole 17b may be employed.
  • the sealing material 39 may be exposed to the outside of the vibration isolator 1.
  • the inner portion 19a of the outer plate member 19 a configuration without the annular top wall 19c, the inner cylinder portion 19d, and the outer cylinder portion 19e may be adopted.
  • the present invention is also applicable to a vibration isolator that does not include the bound stopper 41, the bound stopper rubber 41a, the rebound stopper 42, and the rebound stopper rubber 42a.
  • the partition member 15 showed the structure provided with the elastic part 32 and the rigid part 33, it is not restricted to such an aspect, For example, the structure provided only with a rigid part etc. are employ
  • the restriction passage 21 may extend less than 360 ° around the central axis O.
  • the orifice groove 33 a may be formed on the outer peripheral surface of the rigid body main body 34.
  • the vibration isolator 1 is not limited to the cabin mount of the vehicle, but can be applied to other than the cabin mount.
  • the present invention can be applied to engine mounts and bushes for vehicles, generator mounts mounted on construction machines, or to machine mounts installed in factories and the like.
  • a vibration isolator according to the present invention is connected to one of a vibration generating portion and a vibration receiving portion, and to a cylindrical outer mounting member, and to the other, and is disposed inside the outer mounting member.
  • a pair of first main body rubbers that connect the inner mounting member, the outer mounting member, and the inner mounting member, and that are spaced apart in the axial direction along the central axis of the outer mounting member;
  • a partition in which the liquid chamber between the first main body rubbers is partitioned into a first liquid chamber and a second liquid chamber in the axial direction, and a restriction passage is formed to communicate the first liquid chamber and the second liquid chamber.
  • the first end member of the outer mounting member is connected to a connected portion provided in either one of the vibration generating portion and the vibration receiving portion, and the first The thickness of the end member is smaller than the thickness of the second end member.
  • the plate thickness of the first end member is thinner than the plate thickness of the second end member among the first end member and the second end member in which the pair of first main body rubbers are separately connected.
  • the weight of the vibration isolator can be reduced.
  • the first end member having a small plate thickness is connected to the connected portion provided in one of the vibration generating portion and the vibration receiving portion, the first end member is supported by the connected portion. It is possible to suppress a decrease in strength due to the thin first end member, and the durability of the vibration isolator can be ensured.
  • the second end member is provided with a rebound stopper rubber protruding toward the opposite side of the liquid chamber side along the axial direction, and the inner mounting member faces the rebound stopper rubber in the axial direction.
  • a rebound stopper may be provided.
  • the rebound stopper rubber that contacts the rebound stopper is the first end. Since it is disposed not on the member but on the second end member having a large plate thickness, excessive relative displacement of the outer mounting member and the inner mounting member in the rebound direction can be suppressed while ensuring durability.
  • the first end member, the second end member, and the middle member are integrally fixed to the first end member, the second end member, and the middle member, and the first end member is Insertion holes into which bolts for connecting to the connected parts are integrally inserted may be formed separately, and the bolts may be press-fitted into the insertion holes formed in the second end member.
  • the bolt since the bolt is press-fitted into the insertion hole formed in the thick second end member, the bolt can be strongly fixed to the outer mounting member.
  • the outer mounting member and the inner mounting member are coupled, and a second main body rubber disposed outside the liquid chamber is provided, and the second main body rubber is a pair of the first main body rubbers,
  • the first body rubber connected to the first end member is adjacent to the first body rubber in the axial direction
  • the outer mounting member is connected to the second body rubber and is connected to the first end member.
  • the second main body rubber mainly supports the static load applied to the vibration isolator and suppresses the relative displacement in the axial direction of the outer mounting member and the inner mounting member, while the axial vibration is input.
  • vibration can be attenuated and absorbed. That is, a configuration in which the vibration-proof rubber and the liquid seal vibration-proof device are directly connected in the axial direction is obtained.
  • the first end member having a small plate thickness sandwiches the connected portion in the axial direction between the outer plate member to which the second main body rubber is connected, the first end member is supported from both sides in the axial direction.
  • the first end member is provided with a first protrusion that protrudes radially inward and forms a part of the wall surface of the liquid chamber.
  • the first protrusion has an axial size. Is formed in the portion equivalent to the plate thickness of the first end member in the axial direction, an injection hole is formed in the liquid chamber, and a sealing material is attached to the injection hole.
  • the outer plate member may be covered.
  • the sealing material can be easily attached to the injection hole. it can. Moreover, since the sealing material is covered with the outer plate member, it is possible to prevent flying objects such as stones from colliding with the sealing material, and to ensure the durability of the vibration isolator. be able to.
  • vibration isolator of the present invention By applying the vibration isolator of the present invention to this field, it is possible to attenuate and absorb lateral vibration in a configuration in which the vibration isolator rubber and the liquid seal vibration isolator are directly connected in the axial direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

Le dispositif d'isolation contre les vibrations selon l'invention est pourvu d'un second caoutchouc de corps principal (30) qui relie un élément de fixation externe (11) et un élément de fixation interne (12), et qui est installé à l'extérieur d'une chambre de liquide (14) se situant entre une paire de premiers caoutchoucs de corps principal (13a, 13b). L'élément de fixation externe est pourvu d'un élément plaque externe (19) auquel le second caoutchouc de corps principal est relié. L'élément de fixation interne est équipé d'un élément butée anti-rebond (41) qui, conjointement avec le premier caoutchouc de corps principal, prend en sandwich axialement une partie radialement interne (19a) de l'élément plaque externe. La partie radialement interne de l'élément panneau externe opposé axialement à l'élément butée anti-rebond est incorporée dans le second caoutchouc de corps principal. La partie interne de l'élément plaque externe est pourvue d'une paroi supérieure annulaire (19c) comportant des surfaces recto et verso se faisant face axialement, et une partie cylindre interne (19d) s'étendant axialement depuis une partie d'extrémité radialement interne de la paroi supérieure annulaire en direction du premier caoutchouc de corps principal.
PCT/JP2019/013214 2018-05-10 2019-03-27 Dispositif d'isolation contre les vibrations WO2019216048A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2018091754A JP7027245B2 (ja) 2018-05-10 2018-05-10 防振装置
JP2018-091481 2018-05-10
JP2018-091482 2018-05-10
JP2018091482A JP2019196812A (ja) 2018-05-10 2018-05-10 防振装置
JP2018-091754 2018-05-10
JP2018091481A JP6995012B2 (ja) 2018-05-10 2018-05-10 防振装置

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WO2019216048A1 true WO2019216048A1 (fr) 2019-11-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114746669A (zh) * 2019-12-10 2022-07-12 株式会社普利司通 液封衬套和液封衬套的制造方法
US20220397178A1 (en) * 2019-11-13 2022-12-15 Bridgestone Corporation Vibration-damping device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0238730A (ja) * 1988-07-28 1990-02-08 Toyo Tire & Rubber Co Ltd 液体封入式ボディマウント
JP2002266929A (ja) * 2001-03-05 2002-09-18 Tokai Rubber Ind Ltd 流体封入式トーコレクトブッシュおよびそれを用いたサスペンション機構
JP2011511231A (ja) * 2008-02-05 2011-04-07 クーパー−スタンダード オートモーディブ インク． 軸方向に減衰される流体式マウント組立体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0238730A (ja) * 1988-07-28 1990-02-08 Toyo Tire & Rubber Co Ltd 液体封入式ボディマウント
JP2002266929A (ja) * 2001-03-05 2002-09-18 Tokai Rubber Ind Ltd 流体封入式トーコレクトブッシュおよびそれを用いたサスペンション機構
JP2011511231A (ja) * 2008-02-05 2011-04-07 クーパー−スタンダード オートモーディブ インク． 軸方向に減衰される流体式マウント組立体

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220397178A1 (en) * 2019-11-13 2022-12-15 Bridgestone Corporation Vibration-damping device
US12104670B2 (en) * 2019-11-13 2024-10-01 Prospira Corporation Vibration-damping device
CN114746669A (zh) * 2019-12-10 2022-07-12 株式会社普利司通 液封衬套和液封衬套的制造方法

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