JP2009228885A - Liquid-sealed mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a liquid-sealed mount. <P>SOLUTION: This liquid-sealed mount has a case 11 having a blocking-up wall 11b on one end and having the opening end on the other end, and a sealing member 15 having a flexible cover 14 fixed to the opening end of the case 11. A sealing chamber 21 for sealing a damping liquid L in the case 11 is formed thereby. A stud 16 penetrating through the flexible cover 14 is incorporated by being positioned in a central part in the radial direction of the case 11, and a movable damping member 23 put in a soaked state in the damping liquid L is installed at an inner end of the stud 16. An inner wall surface 17 is integrally formed on the inner end of the sealing member 15, and a recessed part 18 is formed between the inner wall surface 17 and the stud 16. A locking part 26 is formed on an inner peripheral surface 17a of the inner wall surface 17 by being positioned in the recessed part 18, and a fixed damping member 27 is fitted and fixed to the locking part 26. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid-filled mount that elastically supports the load of an upper member.

  In a construction machine such as a hydraulic excavator, a vibration isolator such as a liquid-filled mount is mounted between a driver's cab, that is, a cab and a vehicle body so that vibrations of the vehicle body are not transmitted to the cab. Further, in a vehicle having an engine, a vibration isolator such as a liquid-filled mount is mounted between the engine and the vehicle body so that the vibration of the engine is not transmitted to the vehicle body. The liquid-filled mount has an elastic support function that elastically supports the load of the upper member such as an engine and a cab, and a damping function that absorbs and dissipates vibration transmitted from one member to the other member. Yes.

Such a liquid-filled mount includes a type in which the load of the upper member is mainly supported by a rubber elastic body and a type in which the load of the upper member is mainly supported by a coil spring member. As the former type, as described in Patent Document 1, it has a cup-shaped case for containing the damping liquid, and a stud attached to the inner end so that the damping plate is immersed in the damping liquid, Some have provided an elastic body that seals the damping liquid between the stud and the case and elastically supports the axial load of the stud. As the latter type, as described in Patent Documents 2 to 4, the stud and the case are sealed by an elastic body, and the axial load of the stud is applied between the bottom wall of the case and the movable damping plate. Some have a receiving coil spring member.
JP-A-7-224883 JP-A-11-210807 JP 2000-249181 A JP 2003-322198 A

  Such a liquid-filled mount includes a type in which a fixed damping plate is attached in the case as described in Patent Documents 2 and 3 in order to enhance the damping function. Placing the fixed damping plate in the mold for molding the rubber of the elastic body and integrating the elastic body and the fixed damping plate interferes with the fixed damping plate and the mold when the mold is separated. It is difficult. Therefore, in order to mount the fixed attenuation plate directly in the case, conventionally, the large-diameter portion that accommodates the fixed attenuation plate in the case is plastically processed, the stepped portion is cut on the inner surface of the case, or the fixed attenuation plate is attached. For this reason, the bracket for mounting is incorporated in the case as a separate member. For this reason, not only does the manufacturing cost of the liquid-sealed mount increase, but the axial dimension of the case increases, making it difficult to reduce the size of the liquid-sealed mount.

  In addition, not only the axial load of the stud is applied to the liquid-filled mount, but also a horizontal load is applied, so it is necessary to regulate the relative movement of the stud and the case with a predetermined stroke or more in the horizontal direction. is there. Therefore, the movable damping plate is abutted against the case, the stud is abutted against the fixed damping plate, and a horizontal stopper that restricts the relative movement of the stud and the case in the horizontal direction is provided in the case. In this case, in order to avoid shocking direct contact between metals, it is necessary to provide a cushioning member such as rubber on the movable damping plate or the like. Such a buffer member is immersed in the damping liquid in the case, and the buffer member comes into sliding contact with the metal member. In the case of frequent sliding contact, debris is generated from the rubber cushioning member, and the debris may remain in the damping liquid. The durability of the mount may be impaired. Further, when the buffer material is provided on the movable damping plate or the like, it is difficult to reduce the size because a buffer area is required to some extent.

  An object of the present invention is to achieve miniaturization of a liquid-filled mount.

  Another object of the present invention is to reduce the manufacturing cost of a liquid-filled mount.

  Another object of the present invention is to improve the durability of the liquid-filled mount.

  The liquid-filled mount of the present invention has a case having a closed wall at one end and an open end at the other end, a movable damping member is provided at the inner end, and the outer end from the open end of the case. A stud that protrudes and is disposed in the case; a flexible lid made of an elastic material that is disposed between the case and the stud and forms a sealed chamber in which a damping liquid is enclosed; and A main sealing chamber having a predetermined distance with respect to the outer peripheral surface of the stud and having an opposing inner wall surface portion and a main sealing chamber that is fixed to the inner wall surface portion of the sealing member and in which the movable damping member is incorporated And a fixed damping member that divides the main sealed chamber into a sub sealed chamber that communicates with the main sealed chamber through a damping liquid passage hole.

  In the liquid-sealed mount according to the present invention, the inner wall surface of the sealing member is made of an elastic material and has an inner end that can come into contact with the movable damping member. The liquid-filled mount of the present invention is characterized in that the inner wall surface of the sealing member includes a hard cylindrical member.

  The liquid-filled mount of the present invention is characterized in that the fixed damping member is fitted and fixed to the inner wall surface portion. The liquid-filled mount of the present invention is characterized in that the fixed damping member is fitted and fixed to a locking portion provided on the inner wall surface portion.

  The liquid-filled mount of the present invention is provided with a disk part fixed to the outer end side of the stud, and protruding from the outer periphery of the disk part toward the case, and the outer surface of the sealing member or the case It has a stopper member provided with the cylindrical part which can contact | abut to the outer peripheral surface of the protrusion part which consists of an elastic material which protruded and provided from the opening end.

  The liquid-filled mount of the present invention is characterized in that the projecting portion is integrally provided from an outer surface of the sealing member. In the liquid-sealed mount according to the present invention, the projecting portion is an external stopper with which the disk portion of the stopper member abuts when the stud receives a predetermined load or more toward the inside of the case. To do. The liquid-filled mount of the present invention is characterized in that the outer peripheral portion of the protruding portion is a buffer portion in which the cylindrical portion of the stopper member abuts against the buffer.

  According to the liquid-filled mount of the present invention, since the fixed attenuation member is fixed to the inner peripheral surface of the inner wall surface portion formed on the sealing member, it is possible to obtain high attenuation characteristics and to attach the fixed attenuation member. It is necessary to plastically process the large diameter part that accommodates the fixed damping member in the case, to cut the stepped part on the inner surface of the case, or to incorporate a bracket for attaching the fixed damping member into the case as a separate member. As a result, the liquid-filled mount can be manufactured inexpensively and in a small size.

  According to the liquid-filled mount of the present invention, a predetermined or more horizontal load acting on the vehicle body is applied to the projecting portion as an external stopper integrally provided from the outer surface of the sealing member, to the outer end portion of the stud. Since the cylindrical portion of the provided stopper member is supported by contact, it is not necessary to provide a shock absorbing member such as rubber on the movable damping member or the fixed damping member to support the radial load, and the size can be reduced. In addition, it is possible to prevent the attenuation characteristics of the attenuation liquid caused by the residue generated from the buffer member during sliding from remaining in the sealed chamber and to improve the durability of the liquid-filled mount. In addition, the movable damping member and the fixed damping member may have any strength as long as they can withstand the hydraulic pressure due to the flow of the damping liquid, and can be made of resin or the like, and the protrusion serves as the compression direction stopper and the horizontal direction stopper. It is possible to manufacture a liquid-filled mount in a small and inexpensive manner.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a liquid filled mount according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG.

  This liquid-filled mount 10a has a cup-shaped case 11, and as shown in FIG. 2, the case 11 is integrated with a cylindrical portion 11a and one end side (the lower side in the figure) of a blocking wall 11b. And. The other end side (upper side in the figure) of the case 11 is an open end. As shown in FIG. 1, a substantially rectangular flange portion 11c extending radially outward is integrally provided at the open end. It has been. A substantially rectangular mounting plate 12 is abutted against the flange portion 11c of the case 11 so as to correspond to the flange portion 11c, and a cylindrical member 13 formed integrally with the radially inner end of the mounting plate 12 includes: The case 11 extends inward (downward in the figure) to the axial center position of the cylindrical portion 11a.

  A sealing member 15 having a flexible lid portion 14 made of an elastic material in the axial direction is vulcanized and bonded to the mounting plate 12 and the cylindrical member 13, and the sealing member 15 is attached to the mounting plate at the outer periphery thereof. 12 and the cylindrical member 13 are fixedly supported. A stud 16 is incorporated in the central portion of the case 11 in the radial direction so as to penetrate the flexible lid portion 14, and an inner wall surface portion 17 made of an elastic material facing the outer peripheral surface of the stud 16 with a predetermined distance is hermetically sealed. A recess 18 is formed between the outer peripheral surface of the stud 16 and the inner peripheral surface 17 a of the inner wall surface portion 17 provided on the member 15. An annular inner wall surface portion 17 formed integrally with the flexible lid portion 14 includes a cylindrical member 13 made of a metal material or the like that is harder than the elastic material. The stud 16 fixed to the flexible lid portion 14 by vulcanization adhesion is disposed in the case 11 with its outer end protruding from the opening end of the case 11, and a screw hole 19 that opens to the outer end surface. Is formed. The inner wall surface portion 17 is not limited to an elastic material formed integrally with the flexible lid portion 14, and for example, the inner end of the cylindrical member 13 projecting inward from the flexible lid portion 14. You may form by a part.

  The sealing member 15 and the stud 16 are fixed to the case 11 together with the mounting plate 12 by bending the fixing claw 11d provided on the flange portion 11c with the mounting plate 12 abutted against the flange portion 11c. The As shown in FIG. 1, through holes are formed at the four corners of the substantially rectangular flange portion 11 c and the mounting plate 12. When the mounting plate 12 is fixed to the flange portion 11 c, each through hole is one. Then, the mounting holes 20 are formed at the four corners of the laminated plate composed of the flange portion 11 c and the mounting plate 12. When the mounting plate 12 is fixed to the flange portion 11 c, the open end of the case 11 is closed by the flexible lid portion 14 disposed between the case 11 and the stud 16, and a sealed chamber is formed inside the case 11. 21 is formed.

  When the liquid-filled mount 10a is mounted on a work vehicle having a vehicle body and a cab disposed on the vehicle body, the case 11 is fixed to the vehicle body by bolts attached to the mounting holes 20 of the flange portion 11c and the mounting plate 12. The stud 16 is fixed to the cab by a stud 22 that is screwed into the screw hole 19 of the stud 16. However, the liquid filled mount 10a may be mounted on the work vehicle so that the stud 16 is fixed to the vehicle body and the case 11 is fixed to the cab.

An incompressible high-viscosity damping liquid L made of silicone oil or the like is enclosed in the sealed chamber 21 of the case 11, and compressible air is enclosed as a gas G. When the damping liquid L is used for vibration isolation of a work vehicle such as a hydraulic excavator or a cab of a large automobile, the damping liquid L having a viscosity in the range of 5,000 to 300,000 mm ² / s (5,000 to 300,000 cSt) is used. It is desirable to use it appropriately.

  As shown in FIG. 2, when the liquid-filled mount 10 a is mounted on the vehicle body so that the stud 16 is on the upper side of the case 11, the gas G having a specific gravity lighter than the damping liquid L is directed to the upper side of the sealed chamber 21. The liquid level S of the gas G and the attenuation liquid L is located on the flexible lid 14 side, that is, in the recess 18. Conversely, when the liquid-filled mount 10a is mounted on the vehicle body so that the case 11 is located above the stud 16, the liquid level S is positioned on the closing wall 11b side.

  The inner end of the stud 16 is immersed in the damping liquid L, and a movable damping member 23 that is immersed in the damping liquid L is provided at the inner end as shown in FIG. Yes. The movable damping member 23 has a disc portion 23a that is abutted against the inner end surface of the stud 16, and a bent portion 23b that is integrated with the outer periphery thereof, and a bent portion that is bent toward the sealing member 15 side. Attenuating liquid passage hole 24 is formed between 23 b and cylindrical portion 11 a of case 11. As shown in FIG. 2, the movable damping member 23 has a cylindrical caulking portion 25 formed at the inner end portion of the stud 16 fitted in a mounting hole formed in the disc portion 23a. The crimping portion 25 is fixed to the stud 16 by bending.

  A locking portion 26 formed in a concave shape is provided on the inner peripheral surface 17a of the inner wall surface portion 17 so as to be positioned between the movable damping member 23 and the liquid surface S, and a fixed damping member is provided on the locking portion 26. 27 is fitted and fixed. The fixed damping member 27 has a cylindrical portion 27a press-fitted into the locking portion 26 and a disc portion 27b provided integrally therewith, and extends radially inward from the inner end of the cylindrical portion 27a. A damping liquid passage hole 28 is formed between the disc portion 27 b and the stud 16. As shown in FIG. 2, the fixed damping member 27 immersed in the damping liquid L includes a main sealed chamber 21a on the side of the blocking wall 11b in which the movable damping member 23 is incorporated, and the main sealed chamber 21a. It is divided into a sub-sealed chamber 21b on the flexible lid portion 14 side that communicates with the damping liquid passage hole 28.

  The fixed damping member 27 may have a shape of only the disk portion 27b that does not have the cylindrical portion 27a, but preferably has the cylindrical portion 27a in order to increase the holding force by press-fitting. Further, the fixed damping member 27 can be fitted and fixed by simply press-fitting the inner wall surface 17a of the inner wall surface portion 17a without providing the locking portion 26, or the cylindrical member 13 can be formed without providing the inner wall surface portion 17 made of an elastic material. Alternatively, the fixed damping member 27 may be fixed to the inner peripheral surface.

  When a load or vibration of the vehicle body is transmitted to the liquid-filled mount 10a having the above-described configuration, the case 11 and the stud 16 are relatively displaced, and the axial and radial loads are supported by the sealing member 15 and the movable damping member. 23 is displaced in the damping liquid L. Due to the displacement of the movable damping member 23, the damping liquid L passes through the damping liquid passage holes 24 and 28, shear resistance is generated in the movable damping member 23 and the fixed damping member 27, and the vibration transmitted from the vehicle body to the cab is attenuated. Is done.

  The inner end portion of the inner wall surface portion 17 is a stopper portion 17b that can come into contact with the movable damping member 23. The stopper portion 17b is movable when a predetermined load or more in the pulling direction is applied to the vehicle body. Functions as a pulling direction stopper that abuts and supports the load. On the other hand, when a predetermined load or more in the compression direction acts on the vehicle body, a cab (not shown) attached to the outer end of the stud 16 projects from the outer surface (upward in the drawing) of the sealing member 15 and is integrated. The impacting load in the compressing direction is elastically supported by abutting on the projecting portion 29 as an external stopper provided on the ring, and the annular projecting portion 29 functions as a compressing direction stopper. The shape of the protruding portion 29 is not limited to an annular shape, and a protruding portion made of an elastic material protruding from the opening end of the case 11 may be provided as a separate member from the sealing member 15.

  As described above, since the engaging portion 26 is formed on the inner peripheral surface 17a of the inner wall surface portion 17 formed integrally with the sealing member 15, and the fixed attenuation member 27 is fitted and fixed thereto, a high attenuation characteristic is obtained. In addition, in order to attach the fixed damping member 27 in the case 11, the large diameter portion that accommodates the fixed damping member 27 is plastically processed in the case 11, the stepped portion is cut in the inner surface of the case 11, and fixed. Since it is not necessary to incorporate a bracket for attaching the damping member 27 into the case 11 as a separate member, the liquid-filled mount 10a can be manufactured at low cost and in a small size. In addition, since the fixed damping member 27 is fitted and fixed to the inner wall surface portion 17 made of an elastic material, fitting accuracy is not required at the time of attachment, and various fixed damping members 27 can be easily replaced. Therefore, it is possible to employ the fixed damping member 27 having an inner diameter matched with an appropriate damping characteristic when assembling the liquid-filled mount 10a.

  However, the fixed damping member 27 may be attached to the inner peripheral surface 17a of the inner wall surface portion 17 by adhesion or the like. In addition, a bent portion 23b for forming a distance between the movable damping member 23 and the fixed damping member 27 is formed in the movable damping member 23 so that sufficient damping characteristics can be obtained. Of course, the shape may be such that the attenuation liquid passage hole 24 is formed between the cylindrical portion 11a and the cylindrical portion 11a.

  Next, a procedure for assembling the liquid-sealed mount 10a having the above configuration will be described. 3A to 3C are cross-sectional views showing the assembly procedure of the liquid-filled mount. First, as shown in FIG. 3 (A), the stud 16 is positioned at the center in the radial direction of the mounting plate 12, and these are fixed by means such as vulcanization adhesion, and the flexible lid portion 14 is attached to the inner wall surface portion 17 and The sealing member 15 is formed integrally with the protruding portion 29. At this time, a convex portion may be formed on the rubber mold or the like so that a concave locking portion 26 is formed on the inner peripheral surface 17 a of the inner wall surface portion 17. 26 may be processed. As shown in FIG. 3B, the fixed damping member 27 is fitted and fixed to the locking portion 26, and the cylindrical portion 27 a of the fixed damping member 27 is press-fitted into the locking portion 26. It will have a holding force that can withstand the hydraulic pressure.

  After the fixed damping member 27 is attached, as shown in FIG. 3C, the movable damping member 23 is fixed to one end of the stud 16 by the caulking portion 25, and the sealing member 15 is previously filled with the damping liquid L together with the stud 16. It is inserted into the case 11. The outer peripheral surface 15a of the sealing member 15 is tapered so as to increase in diameter toward the outer side in the axial direction, and the leakage of the damping liquid L is ensured by being press-fitted into and fitted into the inner peripheral surface of the case 11. To be prevented. The fixing claw 11d is bent in a state where the mounting plate 12 is abutted against the flange portion 11c, and the mounting plate 12 is fixed to the case 11 to be in the state shown in FIG. The attenuation liquid L enclosed in the sealed chamber 21 formed by sealing the open end of the case 11 with the flexible lid portion 14 soaks the movable attenuation member 23 and the fixed attenuation member 27 and is fixed. The damping member 27 partitions the sealed chamber 21 into a main sealed chamber 21a and a sub sealed chamber 21b.

  In addition, although the form which fixed the movable attenuation | damping member 23 with the crimping | crimped part 25 of the stud 16 was demonstrated, of course, you may adhere by a volt | bolt, welding, etc. Moreover, although the form which fixed the attachment plate 12 to the case 11 with the fixing nail | claw 11d was demonstrated, of course, you may adhere by welding, adhesion | attachment, etc. Furthermore, the sealing member 15 is press-fitted into the case 11 that has been filled with the damping liquid L in advance, but an injection hole may be formed in the closed wall 11b of the case 11 so that the damping liquid L is injected after assembly.

  4 is a perspective view of a liquid-filled mount according to another embodiment of the present invention, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. . In these drawings showing the liquid-filled mount 10b, members common to the liquid-filled mount 10a described above are denoted by the same reference numerals.

  As shown in FIG. 6, the liquid-filled mount 10 b has a flexible lid portion 14 that is thin in the axial direction, and a compression provided between the closing wall 11 b of the case 11 and the movable damping member 23. The axial load is supported by the coil spring 32 and the sealing member 15, and the axial stroke is set larger than that of the liquid-sealed mount 10a shown in FIG.

  As shown in FIGS. 4 and 5, the outer shape of the flange portion 11c of the case 11 has a substantially rhombus shape, and the mounting plate 12 abutted against the flange portion 11c has a substantially rhombus shape corresponding to the flange portion 11c. is there. The mounting plate 12 includes a mounting plate 12a integrally formed with a cylindrical member 13a so as to protrude inward in the axial direction of the case 11, and a cylindrical member 13b so as to protrude outward in the axial direction of the case 11. Are formed integrally with a mounting plate 12b, and mounting holes 20 are formed at two corners on the long side of the laminated plate composed of the mounting plates 12a, 12b and the flange portion 11c. The cylindrical member 13a of the mounting plate 12a is formed shorter than the cylindrical member 13 of the liquid-filled mount 10a shown in FIG. 2, and the flexible lid portion 14 vulcanized and bonded to the mounting plate 12 has a thin shape. It has become.

  The movable damping member 23 has a disc portion 23a and a cylindrical portion 23c integrated therewith, and a support plate 33 is abutted against the sealing member 15 side of the disc portion 23a. The disc portion 23a and the support plate 33 extend in the radial direction with respect to the stud 16, and a through hole 34 through which the damping liquid L passes is formed. The cylindrical portion 23 c extends from the outer peripheral portion of the disc portion 23 a toward the blocking wall 11 b, and an attenuation liquid passage hole 24 is formed between the cylindrical portion 23 c and the cylindrical portion 11 a of the case 11.

  Similar to the liquid-sealed mount 10a, a locking portion 26 is provided on the inner peripheral surface 17a of the inner wall surface portion 17 formed integrally with the sealing member 15 and positioned between the movable damping member 23 and the liquid surface S. The fixed damping member 27 is fitted and fixed to the locking portion 26. As described above, since the locking portion 26 is formed on the inner peripheral surface 17a of the inner wall surface portion 17 and the fixed damping member 27 is fitted and fixed to the locking portion 26, high damping characteristics can be obtained and the inner portion can be fixed in the case 11. In order to attach the damping member 27, a large-diameter portion that accommodates the fixed damping member 27 is plastically processed in the case 11, a step portion is cut on the inner surface of the case 11, and a bracket for attaching the fixed damping member 27 is provided. Since it is not necessary to incorporate it into the case 11 as a separate member, the liquid-filled mount 10b can be manufactured inexpensively and in a small size.

  A compression coil spring 32 is mounted substantially coaxially with respect to the stud 16 between the inner surface of the disk portion 23a of the movable damping member 23 and the blocking wall 11b. When a load or vibration of the vehicle body is transmitted to the liquid-filled mount 10b having the above configuration, the case 11 and the stud 16 are relatively displaced, and the axial load is supported by the compression coil spring 32 and the sealing member 15. The movable damping member 23 is displaced in the damping liquid L. Due to the displacement of the movable damping member 23, the damping liquid L passes through the damping liquid passage holes 24 and 28, shear resistance is generated in the movable damping member 23 and the fixed damping member 27, and the vibration transmitted from the vehicle body to the cab is attenuated. Is done. When a predetermined load or more in the pulling direction is applied to the vehicle body, it can be moved via the support plate 33 to the stopper portion 17b which is the inner end portion of the inner wall surface portion 17 in the same manner as the liquid-filled mount 10a shown in FIG. The attenuating member 23 abuts to support the load, and the inner wall surface portion 17 functions as a pulling direction stopper.

  A stopper member 35 is attached to the outer end surface of the stud 16, and the stopper member 35 has a disk portion 35 a fixed to the outer end surface of the stud 16 and a cylindrical portion 35 b provided integrally therewith. . The disk portion 35 a extends in the radial direction of the stud 16, and a cylindrical portion 35 b is provided so as to protrude from the outer periphery toward the case 11. The cylindrical portion 35 b has a larger diameter than the protruding portion 29 as an external stopper integrally provided so as to protrude from the outer surface (upward in the drawing) of the sealing member 15, and is formed on the outer peripheral portion 29 a of the annular protruding portion 29. It arrange | positions so that this may be contact | covered.

  When a load more than a predetermined value acts in the compression direction, that is, in the case 11, the disc portion 35 a of the stopper member 35 comes into contact with and supports the outer end surface of the protruding portion 29. The protrusion 29 functions as a compression direction stopper. On the other hand, when a predetermined load or more in the radial direction acts on the vehicle body, the cylindrical portion 35b comes into contact with and supports the outer peripheral portion 29a of the protruding portion 29, and the protruding portion 29 functions as a horizontal stopper. To do. In this case, the outer peripheral portion 29a of the projecting portion 29 is a buffer portion that abuts against the cylindrical portion 35b, and a cylindrical member 13b made of a metal material harder than the elastic material is provided in the projecting portion 29. Since the cylindrical member 13b acts as a reinforcing plate for the horizontal stopper, the horizontal load can be reliably supported.

  In this way, a predetermined or more horizontal load acting on the vehicle body is supported by the cylindrical portion 35b of the stopper member 35 coming into contact with the protruding portion 29 as an external stopper provided outside the sealed chamber 21. Therefore, it is not necessary to provide a shock absorbing member such as rubber on the movable damping member 23 or the fixed damping member 27 to support the radial load, and it is possible to reduce the size, and debris generated when the cushioning member slides in the sealed chamber 21. Therefore, it is possible to prevent the attenuation characteristics of the attenuation liquid L from being lowered, and to improve the durability of the liquid-sealed mount 10b. Further, since the movable damping member 23 and the fixed damping member 27 do not support the load in the horizontal direction, it is sufficient if the strength is strong enough to withstand the hydraulic pressure, and these can be made of resin, and the compression direction stopper and the horizontal direction stopper are provided. Since the projection 29 serves also, the liquid-filled mount 10b can be manufactured in a small and inexpensive manner.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the protrusion 29 of the liquid-filled mount 10b only needs to have a shape that can contact the disk portion 35a and the cylindrical portion 35b of the stopper member 35, and is not limited to an annular convex shape.

It is a perspective view of the liquid enclosure type mount which is one embodiment of the present invention. FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. (A)-(C) are sectional drawings which show the assembly procedure of a liquid enclosure type mount. It is a perspective view of the liquid enclosure type mount which is other embodiments of the present invention. FIG. 5 is a plan view of FIG. 4. It is sectional drawing which follows the 6-6 line in FIG.

Explanation of symbols

10a, 10b Liquid-sealed mount 11 Case 11a Cylindrical portion 11b Closure wall 11c Flange portion 11d Fixing claws 12, 12a, 12b Mounting plates 13, 13a, 13b Cylindrical member 14 Flexible lid portion 15 Sealing member 15a Outer peripheral surface 16 Stud 17 Inner wall surface portion 17a Inner peripheral surface 17b Stopper portion 18 Recess 19 Screw hole 20 Mounting hole 21 Sealed chamber 21a Main sealed chamber 21b Sub sealed chamber 22 Implantable bolt 23 Movable damping member 23a Disk portion 23b Bending portion 23c Cylindrical portion 24 Damping liquid passage hole 25 Caulking part 26 Locking part 27 Fixed damping member 27a Cylindrical part 27b Disk part 28 Damping liquid passage hole 29 Projection part 29a Outer part 32 Compression coil spring 33 Support plate 34 Through hole 35 Stopper member 35a Disk part 35b Cylindrical part L Damping Liquid G Gas S Liquid level

Claims (9)

A case having a closed wall at one end and an open end at the other end;
A stud provided with a movable damping member at the inner end and an outer end projecting from the open end of the case;
A flexible lid made of an elastic material, which is disposed between the case and the stud and forms a sealed chamber in which a damping liquid is sealed in the case; and a predetermined distance from the outer peripheral surface of the stud And the sealing member which has an inner wall surface part which counters, and
A fixed damping member fixed to the inner wall surface of the sealing member and dividing the sealed chamber into a main sealed chamber in which the movable damping member is incorporated and a sub sealed chamber communicating with the main sealed chamber through a damping liquid passage hole. And a liquid-filled mount.   2. The liquid-filled mount according to claim 1, wherein the inner wall surface portion of the sealing member is made of an elastic material and has an inner end portion that can come into contact with the movable damping member.   3. The liquid sealed mount according to claim 2, wherein the inner wall surface of the sealing member includes a hard cylindrical member.   The liquid-filled mount according to any one of claims 1 to 3, wherein the fixed damping member is fitted and fixed to the inner wall surface portion.   5. The liquid-filled mount according to claim 4, wherein the fixed damping member is fitted and fixed to a locking portion provided on the inner wall surface portion.   In the liquid-filled mount according to any one of claims 1 to 5, a disk part fixed to the outer end side of the stud, and provided to protrude from the outer periphery of the disk part toward the case, A liquid-filled type comprising a stopper member having a cylindrical portion capable of contacting an outer surface of the sealing member or an outer peripheral surface of a protruding portion made of an elastic material provided to protrude from an opening end of the case mount.   The liquid-filled mount according to claim 6, wherein the projecting portion is integrally provided from an outer surface of the sealing member.   8. The liquid-filled mount according to claim 6, wherein the protruding portion is an external stopper with which the disk portion of the stopper member abuts when the stud receives a predetermined load or more toward the inside of the case. This is a liquid-filled mount.   9. The liquid-filled mount according to claim 6, wherein an outer peripheral portion of the projecting portion is a buffer portion in which the cylindrical portion of the stopper member abuts against the buffer. Enclosed mount.

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