WO2020129891A1 - Douille remplie de liquide - Google Patents

Douille remplie de liquide Download PDF

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Publication number
WO2020129891A1
WO2020129891A1 PCT/JP2019/049148 JP2019049148W WO2020129891A1 WO 2020129891 A1 WO2020129891 A1 WO 2020129891A1 JP 2019049148 W JP2019049148 W JP 2019049148W WO 2020129891 A1 WO2020129891 A1 WO 2020129891A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
liquid
axial direction
outer cylinder
peripheral surface
Prior art date
Application number
PCT/JP2019/049148
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English (en)
Japanese (ja)
Inventor
一高 大津
Original Assignee
株式会社ブリヂストン
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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
Publication of WO2020129891A1 publication Critical patent/WO2020129891A1/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
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially

Definitions

  • the present invention relates to a liquid ring bush.
  • the present application claims priority based on Japanese Patent Application No. 2018-236404 filed in Japan on December 18, 2018, and the content thereof is incorporated herein.
  • an outer cylinder attached to either one of the vibration generator and the vibration receiver, and an inner cylinder attached to the other and arranged inside the outer cylinder, and between the outer cylinder and the inner cylinder. And an elastic body that connects the outer peripheral surface of the inner cylinder and the inner peripheral surface of the intermediate cylinder.
  • Two liquid chambers and these liquid chambers are provided inside the outer cylinder.
  • a liquid-sealed bush in which an orifice passage that communicates is arranged is known.
  • a liquid-sealing bush of this type for example, as shown in Patent Document 1 below, on the outer peripheral surface of an intermediate cylinder, a liquid chamber and an orifice passage are sandwiched from both sides in the axial direction along the central axis of the liquid-sealing bush.
  • a configuration is known in which a seal member that is in pressure contact with the inner peripheral surface of the outer cylinder is disposed at the position.
  • the intermediate cylinder when the seal member is strongly pressed against the inner peripheral surface of the outer cylinder in order to secure the sealing performance of the liquid chamber and the orifice passage, the intermediate cylinder is press-fitted into the outer cylinder. The axial force required to do so increases, and the intermediate cylinder may be deformed or damaged.
  • the present invention has been made in view of the above-mentioned circumstances, and secures the sealability of the liquid chamber and the orifice passage while suppressing an increase in the axial force required to press-fit the intermediate cylinder into the outer cylinder.
  • An object of the present invention is to provide a liquid-sealed bush that can be used.
  • One aspect of the present invention includes an outer cylinder attached to either one of the vibration generator and the vibration receiver, and an inner cylinder attached to the other and arranged inside the outer cylinder, and the outer cylinder. And an inner cylinder disposed between the inner cylinder and the inner cylinder, and an elastic body that connects the outer peripheral surface of the inner cylinder and the inner peripheral surface of the intermediate cylinder.
  • a liquid-sealing bush in which a liquid chamber and an orifice passage communicating between these liquid chambers are arranged, wherein the liquid chamber and the orifice passage are arranged at the center of the liquid-sealing bush on the outer peripheral surface of the intermediate cylinder.
  • a plurality of annular projections extending in the circumferential direction are arranged at intervals in the axial direction, and among the plurality of annular projections, a shaft is formed from the inner annular projection.
  • the outer cylinder is fixed to an outer annular protrusion located on the opposite side of the liquid chamber along the direction, and the outer annular protrusion of the plurality of annular protrusions and the liquid chamber side in the axial direction thereof.
  • a seal piece which projects radially outward from the outer peripheral surface of the intermediate cylinder and is in pressure contact with the inner peripheral surface of the outer cylinder, is arranged between the adjacent annular protrusions.
  • Bush which projects radially outward from the outer peripheral surface of the intermediate cylinder and is in pressure contact with the inner peripheral surface of the outer cylinder, is arranged between the adjacent annular protrusions.
  • the present invention it is possible to secure the sealing property of the liquid chamber and the orifice passage while suppressing an increase in the axial force required to press-fit the intermediate cylinder into the outer cylinder.
  • FIG. 2 is a sectional view of the liquid ring bush of FIG. 1 taken along the line II-II. It is a figure which shows the state which removed the outer cylinder from the liquid ring bush of FIG. 1 and FIG. It is a figure which shows the state which removed the outer cylinder from the liquid ring bush of FIG. 1 and FIG. 2, Comprising: It is a figure which shows the part in which the 1st clamping piece is located.
  • the liquid-sealed bush 1 is attached to the outer cylinder 11 that is attached to one of the vibration generating portion and the vibration receiving portion, and the other, and is also inside the outer cylinder 11.
  • the inner cylinder 12 arranged, the intermediate cylinder 13 arranged between the outer cylinder 11 and the inner cylinder 12, and the elastic body 14 connecting the outer peripheral surface of the inner cylinder 12 and the inner peripheral surface of the intermediate cylinder 13.
  • two liquid chambers 15 and an orifice passage 16 that connects these liquid chambers 15 to each other are provided inside the outer cylinder 11.
  • two orifice passages 16 are arranged.
  • the liquid chamber 15 and the orifice passage 16 are filled with ethylene glycol, water, silicone oil, or the like.
  • the number of orifice passages 16 may be one.
  • the outer cylinder 11 and the inner cylinder 12 are arranged coaxially with the common axis O.
  • the direction along the common axis O is referred to as the axial direction
  • the direction intersecting with the common axis O when viewed from the axial direction is referred to as the radial direction
  • the direction around the common axis O is referred to as the circumferential direction.
  • the central portion side of the liquid ring bush 1 is referred to as the inner side
  • the side away from the central portion of the liquid ring bush 1 is referred to as the outer side.
  • the outer cylinder 11, the inner cylinder 12, the intermediate cylinder 13, the elastic body 14, the liquid chamber 15, and the orifice passage 16 are aligned at the central portions in the axial direction.
  • the intermediate cylinder 13 is press-fitted into the outer cylinder 11.
  • Two through holes 13a are formed in the intermediate cylinder 13 at intervals in the circumferential direction, and these through holes 13a are opposed to each other in the radial direction.
  • the through hole 13a is formed in the entire region of the intermediate cylinder 13 that is located axially inward of both axial ends.
  • An orifice passage 16 is a gap between a portion of the outer peripheral surface of the intermediate cylinder 13 located between the through holes 13 a that are adjacent to each other in the circumferential direction and the inner peripheral surface of the outer cylinder 11.
  • At least a part of the inner surface of each of the liquid chamber 15 and the orifice passage 16 is defined by a rubber material.
  • the inner surface of the liquid chamber 15 is defined by a rubber material over the entire area, and both axial end portions of the inner surface of the orifice passage 16 are defined by a rubber material. Both axial ends of the inner surface of the liquid chamber 15 and the inner surface of the orifice passage 16 are located at the same axial position.
  • the elastic body 14 is made of a rubber material.
  • the elastic body 14 is connected to a portion of the inner peripheral surface of the intermediate cylinder 13 which is located between the two through holes 13a and an opening peripheral edge portion of the through hole 13a.
  • the elastic body 14 is connected over the entire circumference of the opening peripheral edge portion of the through hole 13a on the inner peripheral surface of the intermediate cylinder 13.
  • a portion of the elastic body 14 connected to the opening peripheral edge portion of the through hole 13 a on the inner peripheral surface of the intermediate cylinder 13 defines a part of the inner surface of the liquid chamber 15.
  • the liquid chamber 15 is provided with a stopper projection 17 that projects outward in the radial direction and can come into contact with the inner peripheral surface of the outer cylinder 11.
  • the stopper protrusion 17 protrudes radially outward from the outer peripheral surface of the inner cylinder 12.
  • the stopper protrusion 17 is arranged in the center of each of the inner cylinder 12 and the liquid chamber 15 in the axial direction.
  • At least the radial outer end of the stopper protrusion 17 is made of an elastic material.
  • the entire stopper protrusion 17 is made of a rubber material.
  • a radial gap is provided between the radial outer end of the stopper protrusion 17 and the inner peripheral surface of the outer cylinder 11.
  • annular projections 21 and 22 continuously extending over the entire circumference are provided at respective positions sandwiching the liquid chamber 15 and the orifice passage 16 from both sides in the axial direction. They are arranged one by one.
  • the annular protrusions 21 and 22 are arranged at both ends of the intermediate cylinder 13 in the axial direction.
  • the width of the annular protrusions 21 and 22 refers to the length of the annular protrusions 21 and 22 along the axial direction, and is constant in the circumferential direction.
  • the inner annular projection 21 and the outer side in the axial direction the one located on the inner side in the axial direction (the liquid chamber 15 side along the axial direction) is referred to as the inner annular projection 21 and the outer side in the axial direction.
  • the one located on the opposite side of the liquid chamber 15 along the axial direction is referred to as the outer annular projection 22.
  • the axial ends of the outer cylinder 11 are individually crimped and fixed to the outer annular projections 22 located at the axial ends of the intermediate cylinder 13.
  • the radially outer end surface of the outer annular projection 22 extends radially inward as it extends axially outward.
  • the radially outer end surface of the outer annular projection 22 extends linearly in a longitudinal sectional view along the axial direction. Both axial end portions of the inner peripheral surface of the outer cylinder 11 are in pressure contact with the radially outer end surface of the outer annular projection 22 via a second sandwiching piece 25 described later.
  • the outer surface of the outer annular projection 22 that faces the outer side in the axial direction and the inner surface that faces the inner side in the axial direction extend linearly in the radial direction in a longitudinal sectional view along the axial direction.
  • the outer surface of the outer annular projection 22 is flush with the axially outer end opening edge of the intermediate cylinder 13.
  • the radial outer ends of the outer annular projection 22 and the inner annular projection 21 are located at the same radial positions.
  • the inner annular protrusion 21 defines a communication gap X between the inner peripheral surface of the outer cylinder 11 and at least one of the liquid chamber 15 and the orifice passage 16.
  • the communication gap X is arranged over the entire circumference and communicates with both the liquid chamber 15 and the orifice passage 16.
  • the radially outer end surface of the inner annular protrusion 21 extends linearly in the axial direction in a longitudinal sectional view along the axial direction.
  • the communication gap X is provided between the radially outer end surface of the inner annular protrusion 21 and the inner peripheral surface of the outer cylinder 11.
  • the size of the communication gap X in the radial direction is, for example, 0.5 mm or less. Note that the communication gap X may not be provided between the inner annular protrusion 21 and the inner peripheral surface of the outer cylinder 11.
  • a surface that faces the outer side in the axial direction extends toward the inner side in the axial direction as it heads toward the outer side in the radial direction.
  • the outer surface of the inner ring-shaped protrusion 21 is formed in a curved surface projecting outward in the axial direction.
  • the outer surface of the inner annular protrusion 21 may extend linearly in a longitudinal sectional view along the axial direction.
  • a surface facing inward in the axial direction hereinafter, referred to as an inner surface
  • an inner surface extends linearly in the radial direction in a longitudinal sectional view along the axial direction.
  • the inner annular projection 21 has an inner surface provided with a projection 26 which is formed in a curved surface projecting inward in the axial direction and which continuously extends over the entire circumference.
  • the protruding portion 26 is made of a rubber material.
  • the protruding portion 26 is disposed on a portion of the outer peripheral surface of the intermediate cylinder 13 that is connected to the inner surface of the inner annular protruding portion 21.
  • the ridges 26 define both axial end portions of the inner surface of the liquid chamber 15 and the inner surface of the orifice passage 16.
  • the radial outer ends of the protrusions 26 and the inner annular protrusion 21 are located at the same radial positions.
  • a seal piece 23 is disposed between the two annular protrusions 21 and 22 adjacent to each other in the axial direction, the seal piece 23 protruding from the outer peripheral surface of the intermediate cylinder 13 toward the outer side in the radial direction and being in pressure contact with the inner peripheral surface of the outer cylinder 11.
  • the seal piece 23 is made of a rubber material and is inclined inward in the axial direction. The tip of the seal piece 23 is in contact with the radially outer end surface of the inner annular protrusion 21.
  • a gap A is provided between the seal piece 23 and the two annular protrusions 21 and 22 that are adjacent to each other in the axial direction. The gap A is provided between the seal piece 23 and the outer surface of the inner annular protrusion 21. There is no gap between the seal piece 23 and the outer annular projection 22, and the rubber piece is filled with the gap.
  • the outer surface of the seal piece 23 that faces the outer side in the axial direction and the inner surface that faces the inner side in the axial direction extend toward the inner side in the axial direction as heading toward the outer side in the radial direction.
  • the seal piece 23 is arranged between the inner annular protrusion 21 and the outer annular protrusion 22 and is disposed outward in the axial direction.
  • the inner surface of the seal piece 23 is separated from the inner annular protrusion 21 toward the outer side in the axial direction.
  • the outer surface of the seal piece 23 projects radially outward from the inner surface of the outer annular projection 22.
  • the inner annular projection 21 and the inner peripheral surface of the outer cylinder 11 are elastically deformable, and the inner annular projection 21 and the outer cylinder 11 allow the radial deformation in the radial direction.
  • a plurality of the sandwiched first sandwiching pieces 24 are arranged at intervals in the circumferential direction.
  • the first sandwiching piece 24 is compressed and deformed in the radial direction.
  • a plurality of the first sandwiching pieces 24 are arranged at equal intervals in the circumferential direction.
  • the size of the first sandwiching piece 24 in the circumferential direction is smaller than the interval between the first sandwiching pieces 24 adjacent to each other in the circumferential direction.
  • the radial rigidity of the first sandwiching piece 24 is 10 times or more the radial rigidity of the sealing piece 23.
  • the inner annular projection 21 is formed with a vertical groove 21a that penetrates in the axial direction and opens outward in the radial direction.
  • the first sandwiching piece 24 is disposed in the vertical groove 21a, and the inside The annular projection 21 projects radially outward from the radially outer end surface.
  • the radial outer end of the first sandwiching piece 24 is located radially inward of the radial outer end of the seal piece 23.
  • the first sandwiching piece 24 axially connects the sealing piece 23 and the protruding portion 26.
  • the first sandwiching piece 24, the sealing piece 23, and the protruding portion 26 are integrally formed.
  • a second sandwiching piece that is elastically deformable between the outer annular projection 22 and the inner peripheral surface of the outer cylinder 11 and that is radially sandwiched by the outer annular projection 22 and the outer cylinder 11. 25 are continuously arranged over the entire circumference.
  • the outer annular projection 22 is formed with a vertical groove 22a that penetrates in the axial direction and opens outward in the radial direction, and the vertical groove 22a is filled with a rubber material.
  • the second sandwiching piece 25 and the sealing piece 23 are axially connected via the rubber material and are integrally formed.
  • a plurality of vertical grooves 22a are arranged at intervals in the circumferential direction.
  • the circumferential positions of the vertical groove 22a of the outer annular projection 22 and the vertical groove 21a of the inner annular projection 21 are the same in the circumferential direction.
  • the second sandwiching piece 25, the sealing piece 23, the first sandwiching piece 24, the ridge portion 26, and the elastic body 14 are integrally formed of a rubber material.
  • the seal piece 23 which protrudes outward in the radial direction from the outer peripheral surface of the intermediate cylinder 13 and is in pressure contact with the inner peripheral surface of the outer cylinder 11, is provided. Has been done. This makes it easier to elastically deform the seal piece 23 when the intermediate cylinder 13 is press-fitted into the outer cylinder 11, as compared with, for example, a film-shaped seal member arranged on the outer peripheral surface of the intermediate cylinder 13. It is possible to suppress the axial force required for press-fitting the cylinder 13 into the outer cylinder 11, and it is possible to prevent the intermediate cylinder 13 from being deformed or damaged during the press-fitting.
  • the seal piece 23 comes into close contact with the inner peripheral surface of the outer cylinder 11 due to the elastic restoring force. Thereby, the sealing properties of the liquid chamber 15 and the orifice passage 16 can be secured.
  • the portion where the outer cylinder 11 is crimped and fixed is not the seal piece 23 but the outer annular projection 22. As a result, the sealability of the liquid chamber, 15 and the orifice passage 16 can be easily ensured without applying an excessively large load from the outer cylinder 11 to the seal piece 23.
  • the inner annular projection 21 defines a communication gap X with the inner peripheral surface of the outer cylinder 11.
  • the seal piece 23 has fallen inward in the axial direction. As a result, when the internal pressures of the liquid chamber 15 and the orifice passage 16 rise, a force that presses against the inner peripheral surface of the outer cylinder 11 is applied to the seal piece 23, so that the sealing performance can be reliably enhanced.
  • a first sandwiching piece 24 is formed between the inner annular protrusion 21 and the inner peripheral surface of the outer cylinder 11 so as to be elastically deformable, and is radially sandwiched by the inner annular protrusion 21 and the outer cylinder 11. , Are arranged at intervals in the circumferential direction. Accordingly, when the outer cylinder 11 and the intermediate cylinder 13 are relatively displaced in the radial direction due to the input of vibration, the deformation of the seal piece 23 can be suppressed by elastically deforming the first sandwiching piece 24. Therefore, the durability of the seal piece 23 can be reliably ensured.
  • the outer surface of the inner annular protrusion 21 extends toward the inner side in the axial direction as it extends toward the outer side in the radial direction. There is. As a result, the seal piece 23 can be easily tilted inward in the axial direction without being scratched.
  • a gap A is provided between the seal piece 23 and the two annular protrusions 21 and 22 that are adjacent to each other in the axial direction.
  • the liquid-sealed bush of the present invention includes an outer cylinder attached to either one of the vibration generator and the vibration receiver, and an inner cylinder attached to the other and arranged inside the outer cylinder and the outer cylinder.
  • An intermediate cylinder arranged between the cylinder and the inner cylinder; and an elastic body connecting the outer peripheral surface of the inner cylinder and the inner peripheral surface of the intermediate cylinder.
  • Liquid chamber, and a liquid sealing bush in which an orifice passage that connects these liquid chambers to each other is provided, wherein the plurality of liquid chambers and the orifice passage are provided on the outer peripheral surface of the intermediate cylinder.
  • a plurality of annular projections extending in the circumferential direction are arranged at intervals in the axial direction along the central axis of the bush, and the inner projections of the plurality of annular projections are arranged at intervals in the axial direction.
  • the outer cylinder is fixed, among the plurality of annular projections, the outer annular projection, and in the axial direction with it.
  • a seal piece which protrudes radially outward from the outer peripheral surface of the intermediate cylinder and is in pressure contact with the inner peripheral surface of the outer cylinder, is disposed between the other annular protrusion adjacent to the liquid chamber side. ing.
  • the seal piece is provided which projects outward from the outer peripheral surface of the intermediate cylinder in the radial direction and is in pressure contact with the inner peripheral surface of the outer cylinder.
  • the seal piece comes into close contact with the inner peripheral surface of the outer cylinder due to the elastic restoring force, thus ensuring the sealing performance of the liquid chamber and the orifice passage.
  • the part where the outer cylinder is fixed is not the seal piece, but the outer annular protrusion, so the sealability of the liquid chamber and the orifice passage can be improved without applying an excessively large load from the outer cylinder to the seal piece. It can be easily secured.
  • the inner annular projection located on the liquid chamber side along the axial direction from the outer annular projection is the liquid between the inner peripheral surface of the outer cylinder.
  • a communication gap communicating with at least one of the chamber and the orifice passage may be defined.
  • the inner annular protrusion defines a communication gap with the inner peripheral surface of the outer cylinder.
  • the internal pressure of the liquid chamber and the orifice passage is exerted on the seal piece through the communication gap. Therefore, when the internal pressures of the liquid chamber and the orifice passage fluctuate greatly, the liquid flows in the communication gap in the axial direction, so that the flow velocity of the liquid flowing around the seal piece can be suppressed to a low level. The durability of the piece can be secured.
  • the seal piece may fall down to the liquid chamber side along the axial direction.
  • the seal piece has fallen to the liquid chamber side along the axial direction.
  • a force is applied to the seal piece so that the seal piece is pressed against the inner peripheral surface of the outer cylinder, so that the sealability can be reliably improved.
  • a plurality of sandwiching members that are elastically deformable between the inner annular protrusion and the inner peripheral surface of the outer cylinder and that are sandwiched radially by the inner annular protrusion and the outer cylinder.
  • the pieces may be arranged at intervals in the circumferential direction.
  • a sandwiching piece that is elastically deformable between the inner annular protrusion and the inner peripheral surface of the outer cylinder and that is sandwiched radially by the inner annular protrusion and the outer cylinder is disposed in the circumferential direction. A plurality of them are arranged at intervals.
  • a surface facing the opposite side of the liquid chamber along the axial direction may extend toward the outer side in the axial direction toward the liquid chamber side along the radial direction.
  • the seal piece can be easily tilted toward the liquid chamber side along the axial direction without being scratched.
  • a gap may be provided between the seal piece and the outer annular protrusion and the other annular protrusion.
  • a gap is provided between the seal piece and the outer annular protrusion and the other annular protrusion. Accordingly, when the intermediate cylinder is press-fitted into the outer cylinder, the seal piece is more easily elastically deformed, and the axial force required to press-fit the intermediate cylinder into the outer cylinder can be surely suppressed to be low.
  • the other annular protrusion may be the inner annular protrusion.
  • the present invention is not limited to this.
  • three or more liquid chambers 15 may be provided. That is, a plurality of liquid chambers 15 can be arranged.
  • the two annular protrusions 21 and 22 (the inner annular protrusion 21 and the outer annular protrusion 22) that are adjacent to each other in the axial direction are arranged at both ends of the intermediate cylinder 13 in the axial direction.
  • the present invention is not limited to this.
  • three or more annular protrusions may be arranged at each of both axial end portions of the intermediate cylinder 13.
  • a plurality of annular protrusions can be arranged at each of both axial end portions of the intermediate cylinder 13.
  • the plurality of annular protrusions include an inner annular protrusion 21 and an axial outer side of the inner annular protrusion 21 ( An outer annular projection 22 located on the opposite side of the liquid chamber 15 along the axial direction).
  • the plurality of annular protrusions include the outer annular protrusion 22 and the inner annular protrusion 21 located axially inward of the outer annular protrusion 22 (on the side of the liquid chamber 15 along the axial direction).
  • the inner ring-shaped protrusion 21 and the outer ring-shaped protrusion 22 do not have to be adjacent to each other in the axial direction, and between the inner ring-shaped protrusion 21 and the outer ring-shaped protrusion 22, an inner side of the plurality of ring-shaped protrusions is formed.
  • An annular protrusion other than the annular protrusion 21 and the outer annular protrusion 22 may be provided.
  • annular protrusions other than the inner annular protrusion 21 and the outer annular protrusion 22 may be disposed on the opposite side of the outer annular protrusion 22 in the axial direction from the liquid chamber. ..
  • the seal piece 23 is disposed between the outer annular protrusion 22 and the other annular protrusion adjacent to the liquid chamber side 15 in the axial direction, of the plurality of annular protrusions.
  • the other annular protrusion is the inner annular protrusion 21, and the inner annular protrusion 21 and the outer annular protrusion 22 are axial.
  • the other annular protrusions are annular protrusions other than the inner annular protrusion 21 and the outer annular protrusion 22 among the plurality of annular protrusions.
  • variety of the annular protrusions 21 and 22 showed the structure which is constant in the circumferential direction, respectively, it is not limited to this. That is, depending on the structure of the orifice passage 16, the liquid chamber 15, etc., the widths of the annular protrusions 21 and 22 may not be constant in the circumferential direction.
  • the seal piece 23 is shown to fall inside in the axial direction, but the seal piece 23 may be fallen outside to the axial direction as appropriate. It is not necessary to dispose the first sandwiching piece 24 and the second sandwiching piece 25. It is not necessary to provide the gap A between the seal piece 23 and the two annular projections 21 and 22 that are adjacent in the axial direction, and the gap A may be provided between the seal piece 23 and the outer annular projection 22. It may be provided.
  • the vertical grooves 21a and 22a may not be formed in the inner annular projection 21 and the outer annular projection 22.
  • the liquid chamber 15 and the orifice passage 16 are sandwiched from both sides in the axial direction, and the inner diameter of the inner annular protrusion is at each position located axially inward of the inner annular protrusion 21. You may arrange
  • the liquid ring bush 1 may be applied to a torsion beam type rear suspension, a vehicle engine mount, a generator mount mounted on a construction machine, a machine mount installed in a factory or the like.
  • the present invention it is possible to secure the sealing property of the liquid chamber and the orifice passage while suppressing an increase in the axial force required to press-fit the intermediate cylinder into the outer cylinder.

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

Abstract

La présente invention concerne une douille remplie de liquide (1) équipée : d'un cylindre externe (11) qui est fixé à une partie parmi une partie de génération de vibration et une partie de réception de vibration, et d'un cylindre interne (12) qui est fixé à l'autre partie ; et d'un cylindre intermédiaire (13) qui est intercalé entre le cylindre externe (11) et le cylindre interne (12). Une pluralité de chambres de liquide (15) sont disposées vers l'intérieur du cylindre externe (11). Sur la surface périphérique externe du cylindre intermédiaire (13), une pluralité de parties saillantes annulaires (21, 22) sont respectivement disposées à des emplacements qui prennent en sandwich des deux côtés dans la direction axiale le long de l'axe central de la douille remplie de liquide (1). Le cylindre externe (11) est fixé à la partie saillante annulaire externe (22). Une pièce d'étanchéité (23) est intercalée entre la partie saillante annulaire externe (22) et une autre partie saillante annulaire (22) adjacente à celle-ci sur le côté chambre de liquide dans la direction axiale.
PCT/JP2019/049148 2018-12-18 2019-12-16 Douille remplie de liquide WO2020129891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-236404 2018-12-18
JP2018236404 2018-12-18

Publications (1)

Publication Number Publication Date
WO2020129891A1 true WO2020129891A1 (fr) 2020-06-25

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PCT/JP2019/049148 WO2020129891A1 (fr) 2018-12-18 2019-12-16 Douille remplie de liquide

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220032703A1 (en) * 2018-12-20 2022-02-03 Bridgestone Corporation Toe correction bushing and rear suspension device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10281211A (ja) * 1997-04-03 1998-10-23 Bridgestone Corp 防振装置
JP2007064311A (ja) * 2005-08-30 2007-03-15 Toyo Tire & Rubber Co Ltd 液封防振部材の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10281211A (ja) * 1997-04-03 1998-10-23 Bridgestone Corp 防振装置
JP2007064311A (ja) * 2005-08-30 2007-03-15 Toyo Tire & Rubber Co Ltd 液封防振部材の製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220032703A1 (en) * 2018-12-20 2022-02-03 Bridgestone Corporation Toe correction bushing and rear suspension device
US11548340B2 (en) * 2018-12-20 2023-01-10 Prospira Corporation Toe correction bushing and rear suspension device

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