JP2015055263A - Liquid-sealed cylindrical mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid-sealed cylindrical mount that can be easily diverted to models with different characteristics, and can be provided at low costs.SOLUTION: The mount comprises an inner cylinder 1, an outer cylinder 2, a pair of moldings 3, 3 interposed between the cylinders opposite to each other in an axial direction, and an intermediate member 4 fitted with an inner periphery of the outer cylinder 2 between the pair of moldings 3, 3. Each molding 3 comprises an inner peripheral reinforcing cylinder 31 fixed to the inner cylinder 1 side, an outer peripheral reinforcing cylinder 32 fixed to the outer cylinder 2 side, and elastic bodies 33 integrally molded by a rubber-like elastic material between the inner peripheral reinforcing cylinder 31 and the outer reinforcing cylinder 32. Plural liquid chambers 5, 6 separated from each other in a circumferential direction by the elastic bodies 33 tightly colliding with each other in the axial direction are defined between the pair of moldings 3, 3. An orifice 7 communicated with the liquid chambers 5, 6 is formed by an axial gap 70 formed by fitting the molding 3 and the intermediate member 4 with each other.

Description

  The present invention is an anti-vibration technique, and is used as, for example, an anti-vibration support means in an automobile suspension, and the sealed liquid moves between a first liquid chamber and a second liquid chamber defined by an elastic body. The present invention relates to a liquid-filled cylindrical mount that performs buffering and vibration reduction.

  2. Description of the Related Art Conventionally, a cylindrical liquid-filled mount is known as an anti-vibration support means for an automobile suspension. As shown in FIG. 9, this type of liquid-filled cylindrical mount basically includes an inner cylinder 110 attached to, for example, one of the suspension arm side and the vehicle body side in the suspension device, An outer cylinder 120 attached to the other of the suspension arm side and the vehicle body side, and a pair of molded bodies 130 and 130 interposed between the inner cylinder 110 and the outer cylinder 120 in an axially opposed state, Each molded body 130 includes a metal inner peripheral reinforcement tube 131 that is press-fitted and fixed to the outer peripheral surface of the inner cylinder 110, a metal outer peripheral reinforcement tube 132 that is press-fitted and fixed to the inner peripheral surface of the outer cylinder 120, The elastic body 133 is integrally formed of a rubber-like elastic material (rubber material or a synthetic resin material having rubber-like elasticity) between the peripheral reinforcing cylinder 131 and the outer peripheral reinforcing cylinder 132. The first liquid chamber 140 and the second liquid chamber 150, which are defined in a state separated from each other in the circumferential direction of the elastic body 133 and filled with an incompressible viscous fluid (filled liquid), are orifices extending in the circumferential direction. Communicating with each other via 160.

  For this reason, for example, when a large displacement such as an impact due to a bouncing of the vehicle body is input, due to the large deformation of the elastic body 133, the sealed liquid flows between the first liquid chamber 140 and the second liquid chamber 150. By repeatedly flowing, the displacement force is quickly attenuated, and the small pressure deformation of the elastic body 133 absorbs the fluid pressure change in the fluid chamber against continuous vibration of small amplitude due to engine vibration of the engine during normal running. As a result, the dynamic spring constant is lowered, so that the transmission vibration to the vehicle body can be reduced.

JP 2007-85376 A

  However, in the conventional liquid-filled cylindrical mount described above, the cross-sectional area and length of the orifice 160 is formed of the molded body 130 formed of the molded body 130 including the inner peripheral reinforcing cylinder 131, the outer peripheral reinforcing cylinder 132, and the elastic body 133. Therefore, the damping characteristic obtained by the orifice 160 is specified, and it is difficult to divert to a model having different required characteristics. Therefore, for other models having different required characteristics, it is necessary to change the cross-sectional area and length of the orifice 160, and it is necessary to newly manufacture a mold for molding the molded body 130.

  The orifice 160 opens to the outer peripheral side, and the rising surfaces on both sides in the axial direction have a groove shape made of a part of the rubber-like elastic material of the elastic body 133. Therefore, the mold for molding the molded body 130 is an axis. Therefore, there is a problem in that the mold manufacturing cost is high and the product cost is increased.

  The present invention has been made in view of the above points, and its technical problem is to provide a liquid-filled cylindrical mount that can be easily transferred to a model with different characteristics and can be provided at low cost. There is to do.

  As means for effectively solving the technical problem described above, a liquid-filled cylindrical mount according to the invention of claim 1 includes an inner cylinder, an outer cylinder disposed on the outer peripheral side of the inner cylinder, and the inner cylinder. A pair of molded bodies interposed between the cylinder and the outer cylinder in an axially opposed state; and an intermediate member fitted between the pair of molded bodies on the inner periphery of the outer cylinder, Each of the pair of molded bodies includes an inner peripheral reinforcing cylinder fixed to the inner cylinder side, an outer peripheral reinforcing cylinder fixed to the outer cylinder side, and a rubber-like elasticity between the inner peripheral reinforcing cylinder and the outer peripheral reinforcing cylinder. A plurality of liquid chambers separated from each other in the circumferential direction by the elastic bodies closely in axial contact with each other are defined between the pair of molded bodies, the elastic body integrally formed with a material, An orifice communicating with each other between a plurality of liquid chambers is formed by mutual fitting of the molded body and the intermediate member. It is made of made the axial clearance.

  According to the configuration of the first aspect, since the orifice is composed of an axial gap formed by fitting the molded body and the intermediate member, the change of the damping characteristic in the orifice is the axial dimension of the intermediate member. This can be done by changing the axial width (cross-sectional area) of the axial gap. For this reason, a molded object can be diverted even if a required characteristic is changed. In addition, since the orifice is formed by the outer cylinder, the molded body, and the intermediate member, it is not necessary to form an independent groove serving as the orifice in the molded body. Therefore, the mold used for molding the molded body has a simple structure. It can be.

  A liquid-filled cylindrical mount according to a second aspect of the present invention is the liquid-filled cylindrical mount according to the first aspect, wherein an opening of an orifice to the liquid chamber is formed in the intermediate member.

  According to the configuration of the second aspect, the attenuation characteristic of the orifice is changed by changing the axial width (cross-sectional area) of the axial gap in the fitting portion between the molded body and the intermediate member by changing the axial dimension of the intermediate member. In addition, the length of the orifice can be changed by changing the position of the opening formed in the intermediate member.

  According to a third aspect of the present invention, in the liquid-filled cylindrical mount according to the first or second aspect, the stopper for limiting the radial relative displacement between the inner cylinder and the outer cylinder due to vibration input is projected on the intermediate member. It was established.

  According to the configuration of claim 3, in addition to the function as the orifice forming means in the intermediate member, as a stopper for preventing excessive deformation of the elastic body in the molded body by limiting the radial relative displacement amount of the inner cylinder and the outer cylinder. The functions can be combined.

  According to the liquid-filled cylindrical mount according to the present invention, the cross-sectional area or length of the orifice can be changed by changing the dimension of the intermediate member, so the required characteristics can be changed without changing the design of the molded body. In addition, since the mold for molding the molded body can be made into a simple structure such as a split, the cost can be reduced.

1 is a cross-sectional view showing a preferred embodiment of a liquid-filled cylindrical mount according to the present invention cut by a plane perpendicular to an axis at an orifice position. 1 is a cross-sectional perspective view showing a preferred embodiment of a liquid-filled cylindrical mount according to the present invention cut by a plane extending in an input direction of vibration displacement through an axis. 1 is a cross-sectional perspective view showing a preferred embodiment of a liquid-filled cylindrical mount according to the present invention, cut along a plane that passes through an axis and extends in a direction orthogonal to a vibration displacement input direction. It is a perspective view which shows the state which removed the outer cylinder from the liquid sealing type cylindrical mount of FIG. It is a cross-sectional perspective view which shows the state which removed the outer cylinder from the liquid sealing type cylindrical mount of FIG. It is a perspective view which shows the intermediate member used in preferable embodiment of the liquid sealing type cylindrical mount which concerns on this invention. It is a perspective view which shows the molded object used in preferable embodiment of the liquid enclosure type cylindrical mount which concerns on this invention. It is a perspective view which shows the assembly process of preferable embodiment of the liquid-filled cylindrical mount which concerns on this invention. It is sectional drawing which cuts and shows an example of the conventional liquid enclosure type cylindrical mount by the plane which passes along an axial center.

  Hereinafter, preferred embodiments of a liquid-filled cylindrical mount according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1, 2, and 3, the liquid-filled cylindrical mount includes an inner cylinder 1, an outer cylinder 2 disposed on the outer peripheral side of the inner cylinder 1, and the inner cylinder 1 and the outer cylinder. Between the pair of molded bodies 3 and 3 interposed between the pair of molded bodies 3 and 3 on the inner periphery of the outer cylinder 2. A member 4 is provided.

  The inner cylinder 1 is made of a hollow shaft (tubular) metal, and the outer cylinder 2 is made of a cylindrical metal and is bent toward the inner diameter side at both ends in the axial direction to prevent the molded bodies 3 and 3 from coming off. A bent portion 21 and a crimped end portion 22 are formed.

  The molded bodies 3 and 3 are the same as each other, and are made of a metal inner peripheral reinforcing cylinder 31 that is press-fitted and fixed to the outer peripheral surface of the inner cylinder 1, and a metal that is press-fitted and fixed to the inner peripheral surface of the outer cylinder 2. The outer peripheral reinforcing cylinder 32 and the elastic body 33 integrally formed of a rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity) between the inner peripheral reinforcing cylinder 31 and the outer peripheral reinforcing cylinder 32.

  Specifically, as shown in FIG. 7, the elastic body 33 of the molded body 3 includes an inner peripheral cylinder part 331 vulcanized and bonded to the inner peripheral reinforcing cylinder 31 and an outer peripheral fitting part vulcanized and bonded to the outer peripheral reinforcing cylinder 32. 332 and a conical end wall portion 333 that is formed continuously between the outer peripheral fitting portion 332 in the axial direction of the inner peripheral cylindrical portion 331 and is inclined so as to fall in the opposite direction. In addition, the space between the inner peripheral cylindrical portion 331 and the outer peripheral fitting portion 332 rises from the end wall portion 333 in the opposite direction so as to be divided into two in the circumferential direction, and the inner peripheral cylindrical portion 331 and the outer peripheral fitting portion 332 It has a pair of continuous partition walls 334 and 335 (see FIGS. 1 and 3). For this reason, the elastic body 33 is surrounded by the inner peripheral cylindrical portion 331, the outer peripheral fitting portion 332, the end wall portion 333, and the partition wall portions 334 and 335, and a pair of circumferential concave portions 33a opened in the opposite direction. , 33b are formed. Further, the end wall portion 333 and the partition wall portions 334 and 335 of the elastic body 33 have a tapered shape that is unevenly distributed outward in the axial direction toward the inner diameter side, and have a shape in which the thickness increases toward the inner diameter side.

  Here, the outer peripheral reinforcing cylinder 32 has a small-diameter stepped portion 32a continuously formed in the circumferential direction on the end portion facing the intermediate member 4, and on the outer peripheral surface of the outer peripheral fitting portion 332 of the elastic body 33. A small-diameter step portion 332a extending along the small-diameter step portion 32a is formed. The small-diameter step portion 332a has a circumferential end corresponding to a body portion 41 of the intermediate member 4 to be described later, and the portion other than the small-diameter step portion 332a in the outer peripheral surface of the outer peripheral fitting portion 332 is shown in FIG. As shown in FIG. 4, the circumferential direction damming portion 332 b and the axial direction damming portion 322 c are tightly fitted to the inner circumferential surface of the outer cylinder 2.

  The intermediate member 4 is made of a synthetic resin such as polyamide or a metal, and has a circumferential end, that is, a substantially C shape as shown in FIG. 6, and has an outer cylinder 2 as shown in FIGS. 2 and 3. A cylindrical surface-shaped main body portion 41 fitted to the inner peripheral surface of the main body 41 and a pair of stoppers 42 raised in an arc shape from the inner peripheral surface of the main body portion 41 at 180 ° symmetrical positions across the circumferential ends 4a and 4b, 43 and the stoppers 42, 43 are formed near the circumferential ends 4a, 4b, and have notches 44, 45 that penetrate the inner and outer circumferences and extend toward one end in the axial direction. The stoppers 42 and 43 are formed at positions deviated to one side in the axial direction (the side where the notches 44 and 45 are formed) on the inner peripheral surface of the main body 41, and thereby the notches 44 and 45 are formed. On the side, the inner peripheral surface of the main body 41 is a narrow inner peripheral surface 41a whose axial width is narrower than the axial width of the small-diameter stepped portion 332a on the outer peripheral surface of the molded body 3, and the inner peripheral surface on the opposite side is The width in the axial direction is equal to the width in the axial direction of the small diameter step portion 332a, that is, the wide inner peripheral surface 41b is wider in the axial direction than the narrow inner peripheral surface 41a.

  As shown in FIGS. 2 and 3, the intermediate member 4 is configured such that the outer peripheral surface of the main body portion 41 is closely fitted to the inner peripheral surface of the outer cylinder 2, and both axial ends of the stoppers 42 and 43 in the main body portion 41. The small diameter step portion 332a in the molded bodies 3 and 3 is fitted to the inner peripheral surfaces 41a and 41b.

  In addition, the elastic body 33 in the molded body 3 includes a seal protrusion 331a (see FIGS. 2, 3 and 7, etc.) which is in close contact with the outer peripheral surface of the inner cylinder 1 with an appropriate crushing margin, and a circumferential damming portion 332b. The seal protrusion 332d (see FIG. 4) that is in close contact with the inner peripheral surface of the outer cylinder 2 at an appropriate crushing margin, and the crushing end portion 22 of the outer cylinder 2 is appropriately crushed at the axial damming portion 322c. The seal protrusion 332e (see FIGS. 4, 5 and 7 etc.) which is closely contacted in the middle, the narrow inner peripheral surface 41a of the body portion 41 of the intermediate member 4 is closer to the ends 4a and 4b than the notches 44 and 45 A seal protrusion 332f (see FIG. 4) that is brought into close contact with an appropriate crushing margin is formed.

  In the assembled state shown in FIGS. 1, 2 and 3, the first liquid between the arc-shaped recesses 33a and 33a is formed between the molded bodies 3 and 3 and the elastic bodies 33 and 33 which are opposed to each other in the axial direction. A second liquid chamber 6 is formed between the chamber 5 and the arc-shaped recesses 33b and 33b. The first liquid chamber 5 and the second liquid chamber 6 are separated by partition walls 334, 334 and 335, 335, which are in close contact with each other in the axial direction among the elastic bodies 33, 33. Further, in the first liquid chamber 5, one stopper 42 in the intermediate member 4 protrudes from the outer periphery of the first liquid chamber 5 between the outer peripheral fitting portions 332 and 332 of the molded body 3, 3. The other stopper 43 of the intermediate member 4 protrudes from the outer peripheral portion of the intermediate member 4 via the gap between the outer peripheral fitting portions 332 and 332.

  As shown in FIGS. 4 and 5, the small-diameter step portion 332 a of the outer peripheral fitting portion 332 in one molded body 3 fitted to the main body portion 41 of the intermediate member 4 and the narrow inner peripheral surface 41 a of the main body portion 41. Between the narrow inner peripheral surface 41a and the small-diameter stepped portion 332a, an axial gap 70 having a circumferential end is formed, as shown in FIG. 1, FIG. 2, and FIG. Thus, the orifice 7 is formed by covering the axial gap 70 with the outer cylinder 2 from the outer peripheral side.

  One end of the orifice 7 opens into the first liquid chamber 5 through one opening 44a formed by one notch 44 formed in the intermediate member 4 and the outer periphery fitting portion 332 in one molded body 3. The other end is opened to the second liquid chamber 6 through the other notch 45 formed in the intermediate member 4 and the opening 7b formed by the outer peripheral fitting portion 332 in the one molded body 3. . Therefore, the first liquid chamber 5 and the second liquid chamber 6 communicate with each other through the orifice 7.

  That is, the intermediate member 4 limits the amount of radial relative displacement between the inner cylinder 1 and the outer cylinder 2 by the stoppers 42 and 43, and excessive deformation of the end wall portion 333 and the partition wall portions 334 and 335 of the elastic body 33 in the molded body 3. And a function as means for forming the orifice 7 by fitting with the molded body 3.

  The first liquid chamber 5, the second liquid chamber 6, and the orifice 7 are filled with an incompressible viscous fluid (hereinafter referred to as an encapsulating liquid) such as silicone oil. The liquid column resonance frequency in the orifice 7 is determined by the flow path length and flow path cross-sectional area, the spring constants of the end wall portion 333 and the partition wall portions 334 and 335 in the elastic body 33 of each molded body 3, and the like. For example, it is tuned to a large displacement frequency range due to impact input.

  The liquid-filled cylindrical mount configured as described above is used, for example, as an anti-vibration support means for a suspension of an automobile, and the inner cylinder 1 is attached to, for example, one of the suspension arm side and the vehicle body side. The outer cylinder 2 is attached to the other of the suspension arm side and the vehicle body side. Therefore, when vibration from the suspension arm side or the vehicle body side is input, the inner cylinder 1 and the outer cylinder 2 are relatively repeatedly displaced with deformation of the elastic bodies 33 and 33 of the molded bodies 3 and 3.

  At this time, if the input vibration displacement has a low frequency and a large amplitude, the inner cylinder 1 is largely displaced in the radial direction relative to the outer cylinder 2 in the half cycle of the vibration displacement, so that the elastic displacement Since the end wall portion 333 and the partition wall portions 334 and 335 in the body 33 are greatly deformed and one of the first liquid chamber 5 and the second liquid chamber 6 is pressurized, the sealed liquid is contained in the first liquid chamber 5. The second liquid chamber 6 moves through the orifice 7 from the high pressure side to the downstream side. In the next half cycle, the sealing liquid moves in the opposite direction to that described above. At this time, since the sealed liquid flows smoothly in the orifice 7 due to the liquid column resonance with respect to the input low frequency vibration, in addition to the damping force due to the internal friction of the elastic bodies 33, 33, the sealed liquid flows in the orifice 7. A damping force is generated by friction when flowing, and the input displacement is converged in a short time.

  The radial relative displacement between the inner cylinder 1 and the outer cylinder 2 is determined by contact between the inner peripheral surface of the stoppers 42 and 43 formed on the intermediate member 4 and the outer peripheral surface of the inner peripheral cylindrical portion 331 of the molded body 3. Limited. For this reason, the damage by the excessive deformation | transformation of the end wall part 333 and the partition wall parts 334 and 335 in the elastic body 33 is prevented. Further, the occurrence of the collision sound at this time is effectively suppressed by the inner peripheral cylindrical portion 331 made of a rubber-like elastic material.

  Further, when the input vibration is a continuous small amplitude vibration displacement in the middle / high frequency band due to engine vibration or the like of the engine, the liquid column inertia in the orifice 7 increases. Is difficult to repeatedly move, and the end wall portions 333 and 333 of the elastic bodies 33 and 33 are repeatedly deformed in small increments so that the fluid pressure changes in the first liquid chamber 5 and the second liquid chamber 6 are effective. Since the dynamic spring constant decreases, the transmission vibration to the vehicle body side is effectively insulated.

  In the manufacture of this liquid-filled cylindrical mount, a molded body 3 as shown in FIG. 5 is formed. That is, an inner peripheral reinforcing cylinder 31 and an outer peripheral reinforcing cylinder 32 pre-applied with a vulcanizing adhesive are set in a mold (not shown), and the mold is not closed in a cavity defined between the reinforcing cylinders 31 and 32. By filling the vulcanized rubber material and heating and pressurizing, the elastic body 33 is vulcanized and molded integrally with the reinforcing cylinders 31 and 32 to obtain the molded body 3.

  The molded body 3 includes a small-diameter step portion 332a in which a portion serving as an orifice is straight (that is, a cylindrical surface) with respect to the axial direction, and arc-shaped concave portions 33a and 33a serving as the first liquid chamber 5 and the second liquid chamber 6. Since the shape is also opened in the axial direction, the mold used for the molding can be a simple split mold that is divided into two parts that are clamped and opened only in the axial direction.

  On the other hand, the intermediate member 4 is formed of synthetic resin or the like. And this intermediate member 4 also has a shape in which the inner peripheral surfaces 41a and 41b and the notches 44 and 45 of the main body 41 are opened in the axial direction as shown in FIG. It can be a simple split mold that is split in two in which clamping and opening are performed only in the axial direction.

  After molding, the pair of molded bodies 3 and 3 are opposed to each other on both sides in the axial direction of the intermediate member 4, and between the circumferential damming portion 332b of the molded body 3 and the circumferential ends 4a and 4b of the intermediate member 4. As shown in FIG. 8, the small diameter step portion 332 a of the outer periphery fitting portion 332 in each molded body 3 is fitted to the intermediate member 4 from both sides in the axial direction, and the inner periphery reinforcement is performed. The cylinder 31 is press-fitted into the outer periphery of the inner cylinder 1.

  Since the narrow inner peripheral surface 41a in the main body portion 41 of the intermediate member 4 is narrower than the axial width of the small diameter step portion 332a of the molded body 3, an axial gap 70 having a circumferential end is formed in the fitting portion. Since the wide inner peripheral surface 41b of the main body 41 of the intermediate member 4 has the same axial width as that of the small-diameter stepped portion 332a of the molded body 3, they are fitted with almost no gap.

  Here, in the unassembled state shown in FIG. 7, the molded body 3 has the inner peripheral reinforcing cylinder 31 relatively axially inward (opposite direction to the intermediate member 4) compared to the assembled state shown in FIGS. 2 and 3. ) And the inclination of the end wall portion 333 and the partition wall portions 334 and 335 of the elastic body 33 is large. For this reason, the molded bodies 3 and 3 are pressed into the outer periphery of the inner cylinder 1 to the position where the inner peripheral reinforcing cylinders 31 abut each other as shown in FIG. The end wall portion 333 and the partition wall portions 334 and 335 are subjected to shearing and compressive deformation in the axial direction, and the end wall portion is forcedly expanded and deformed as the inner peripheral reinforcing cylinder 31 is deformed. 333 and the partition wall parts 334 and 335 are compressed to the outer diameter side. Therefore, the end wall portion 333 and the partition wall portions 334 and 335 not only eliminate the tensile stress caused by the volume shrinkage after vulcanization molding but also provide sufficient pre-compression, so that the required durability is achieved. Secured.

  Next, the outer peripheral fitting portion 332 of each molded body 3 and the outer peripheral surface of the intermediate member 4 are inserted into the inner periphery of the outer cylinder 2. At this time, the caulking end portion 22 of the outer cylinder 2 has a cylindrical shape that is not yet bent inward in the radial direction, so that the molded bodies 3 and 3 and the intermediate member 4 can be inserted into the outer cylinder 2. ing.

  Then, by performing the above-described insertion operation in a viscous fluid such as silicone oil stored in the liquid tank, a part thereof is confined in the first liquid chamber 5, the second liquid chamber 6 and the orifice 7 as sealed liquid, and sealed. Is done. After the molded bodies 3 and 3 and the intermediate member 4 are inserted until the outer periphery fitting portion 332 of one molded body 3 comes into contact with the bent portion 21 of the outer cylinder 2, the crimping end 22 of the outer cylinder 2 is moved radially inward. By bending and crimping, the assembled state shown in FIGS. 2 and 3 is obtained.

  According to the configuration of this embodiment, the orifice 7 has the outer peripheral fitting portion 332 in the one molded body 3 fitted to the main body portion 41 of the intermediate member 4 and the narrow inner peripheral surface 41a of the main body portion 41. Since it consists of an axial gap formed by the small-diameter step portion 332a, it is not necessary to form an independent groove for forming an orifice in the molded body 3. Therefore, as described above, the mold used for molding the molded body 3 can be a simple split mold that is divided into two parts that are clamped and opened only in the axial direction, thereby reducing the cost of the mold. be able to.

  Here, the attenuation characteristic due to the flow of the sealing liquid through the orifice 7 varies depending on the length and the cross-sectional area of the orifice 7, but according to the configuration of this embodiment, the orifice 7 is formed on the body portion 41 of the intermediate member 4. An axial gap 70 (see FIGS. 4 and 5) due to a difference in axial width between the narrow inner peripheral surface 41a and the small diameter step portion 332a of the outer peripheral fitting portion 332 in one molded body 3 fitted thereto. The damping characteristic is changed by the orifice 7 so that the axial gap 70 is changed by changing the axial dimension of the narrow inner peripheral surface 41a of the main body 41 of the intermediate member 4. This can be done by changing the axial width (cross-sectional area).

  Further, the length of the orifice 7 is determined by the circumferential position of the notches 44 and 45 (openings 7a and 7b) formed in the intermediate member 4 shown in FIGS. The damping characteristic by flowing can also be performed by changing the formation positions of the notches 44 and 45.

  Therefore, even if there is a request for a characteristic change, as described above, by changing the axial dimension of the narrow inner peripheral surface 41a in the main body 41 of the intermediate member 4 or changing the positions of the notches 44 and 45, molding is performed. Since the body 3 can be diverted, the cost can be reduced also in this respect.

DESCRIPTION OF SYMBOLS 1 Inner cylinder 2 Outer cylinder 3 Molded body 31 Inner circumference reinforcement cylinder 32 Outer circumference reinforcement cylinder 33 Elastic body 332 Outer circumference fitting part 332a Small diameter step part 4 Intermediate member 41 Main body part 42, 43 Stopper 44, 45 Notch 5 First liquid chamber ( Liquid chamber)
6 Second liquid chamber (liquid chamber)
7 Orifice 7a, 7b Opening

Claims (3)

  An inner cylinder, an outer cylinder disposed on the outer peripheral side of the inner cylinder, a pair of molded bodies interposed in an axially opposed state between the inner cylinder and the outer cylinder, and an inner periphery of the outer cylinder An intermediate member positioned between the pair of molded bodies is provided, and the pair of molded bodies are respectively fixed to the inner peripheral reinforcing cylinder fixed to the inner cylinder side and the outer cylinder side. The outer peripheral reinforcing cylinder and the elastic body integrally formed with a rubber-like elastic material between the inner peripheral reinforcing cylinder and the outer peripheral reinforcing cylinder, and the axially abutted each other between the pair of molded bodies. A plurality of liquid chambers separated from each other in the circumferential direction by an elastic body are defined, and an orifice that communicates between the plurality of liquid chambers is formed by the fitting of the molded body and the intermediate member to each other. A liquid-filled cylindrical mount characterized by comprising a gap.   2. The liquid-filled cylindrical mount according to claim 1, wherein an opening of an orifice to the liquid chamber is formed in the intermediate member.   3. The liquid-filled cylindrical mount according to claim 1, wherein a stopper for limiting a radial relative displacement amount between the inner cylinder and the outer cylinder due to vibration input is projected on the intermediate member.

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