WO2006025111A1 - Dispositif d'isolation des vibrations avec joint liquide - Google Patents

Dispositif d'isolation des vibrations avec joint liquide Download PDF

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Publication number
WO2006025111A1
WO2006025111A1 PCT/JP2004/012749 JP2004012749W WO2006025111A1 WO 2006025111 A1 WO2006025111 A1 WO 2006025111A1 JP 2004012749 W JP2004012749 W JP 2004012749W WO 2006025111 A1 WO2006025111 A1 WO 2006025111A1
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WO
WIPO (PCT)
Prior art keywords
liquid
pair
partition
rubber
elastic partition
Prior art date
Application number
PCT/JP2004/012749
Other languages
English (en)
Japanese (ja)
Inventor
Shingo Hatakeyama
Yukio Takashima
Original Assignee
Toyo Tire & Rubber Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Tire & Rubber Co., Ltd. filed Critical Toyo Tire & Rubber Co., Ltd.
Priority to JP2005518102A priority Critical patent/JP4266981B2/ja
Priority to PCT/JP2004/012749 priority patent/WO2006025111A1/fr
Publication of WO2006025111A1 publication Critical patent/WO2006025111A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
    • F16F13/105—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
    • F16F13/106—Design of constituent elastomeric parts, e.g. decoupling valve elements, or of immediate abutments therefor, e.g. cages

Definitions

  • the present invention relates to a liquid-filled vibration isolator.
  • a liquid-filled vibration isolator is known as an anti-vibration device that supports and fixes an automobile engine and does not transmit the engine vibration to the vehicle body frame.
  • a liquid-filled vibration isolator In a liquid-filled vibration isolator, generally, a first attachment attached to the engine side and a second attachment attached to the body frame side are connected by an anti-vibration base made of a rubber-like elastic material. Then, a liquid enclosure chamber is formed between the diaphragm attached to the second fixture and the vibration isolating base, and this liquid enclosure chamber is cut into a main liquid chamber and a sub liquid chamber by a partitioning means. The main and sub liquid chambers communicate with each other by an orifice.
  • the fluid flow effect between the main and sub liquid chambers by the orifice and the vibration damping effect of the vibration isolating substrate are superior to those obtained from the vibration isolating substrate alone.
  • a vibration damping function and a vibration isolation function can be obtained.
  • the liquid-filled vibration isolator is further provided with various structures that can more suitably exhibit the fluid flow effect between the main and sub liquid chambers. Specifically, for example, by disposing the elastic partition membrane so as to partition between the main and sub liquid chambers and absorbing the hydraulic pressure fluctuation between the two liquid chambers by reciprocating deformation of the elastic partition membrane, It is a so-called movable membrane structure that obtains a low dynamic spring characteristic when a small amplitude is input.
  • a partition body is composed of an orifice member and a partition plate member to which a second diaphragm is vulcanized and bonded, and the partition plate member is used as a mounting bracket of the vibration isolator body.
  • the partition plate member is used as a mounting bracket of the vibration isolator body.
  • Patent Document 1 A technique for improving the assemblability by holding the orifice member in the axial direction is disclosed.
  • the orifice member, the second diaphragm, and the partition plate member are configured separately from each other, and a concave groove formed in the peripheral portion of the second diaphragm is provided in the orifice member.
  • Engage with the flange protruding inward, and hold the bottom wall of the groove between the flange and the partition plate member, avoiding problems such as adhesive peeling, and assembling A technique for improving the performance is disclosed (Patent Document 2).
  • Patent Document 1 Japanese Patent Laid-Open No. 2000-23600 (for example, paragraphs [0041-0047], FIG. 1 and FIG. 2)
  • Patent Document 2 No. 02-075128 (for example, Fig. 1 to Fig. 3)
  • the cylinder of the lower mounting bracket is First, the orifice member (and the second diaphragm) is inserted into the cylindrical body, and then the partition plate member is inserted, which requires a two-step process. There was a problem that could not be achieved.
  • the present invention has been made to solve the above-described problems, and is a liquid-filled vibration isolator capable of improving assemblability while stabilizing variations in dynamic characteristics and the like.
  • the purpose is to provide.
  • the liquid-filled vibration isolator according to claim 1 includes a first mounting tool, a cylindrical second mounting tool, the second mounting tool, and the second mounting tool. 1 Connect with fixture An anti-vibration base made of a rubber-like elastic material; a diaphragm attached to the second fixture to form a liquid enclosure chamber between the anti-vibration base; and the liquid enclosure chamber as the anti-vibration base.
  • Partition means for partitioning into a main liquid chamber on the side and a sub liquid chamber on the diaphragm side, and a support plate member attached to the second fixture and sandwiching and fixing the partition means between the vibration isolating substrate, An orifice for communicating the main liquid chamber and the sub liquid chamber; and the partition means includes an elastic partition film formed of a rubber-like elastic body, and a peripheral portion of the elastic partition film.
  • a pair of substantially annular sandwiching members that are sandwiched and fixed in the axial direction, and the pair of sandwiching members are made of a thermoplastic resin material, and the joining surfaces thereof are welded together by welding means, whereby the partition Means from the plurality of members Is the body to configured.
  • the liquid-filled vibration isolator according to claim 2 is the liquid-filled vibration isolator according to claim 1, wherein the support plate member is made of a metal material and the pair of The support plate member and the partition means are configured in a body-like manner by being insert-molded in one of the holding members.
  • the liquid-filled vibration isolator according to claim 3 is the liquid-filled vibration isolator according to claim 1 or 2, wherein the elastic partition film is disposed radially outward.
  • a pair of sandwiching members each including a first rubber portion configured to be thin and tapered, and a second rubber portion that is positioned radially outward from the first rubber portion and rises in the axial direction.
  • a first stopper surface portion capable of receiving the first rubber portion of the elastic partition membrane, and a second rubber portion of the elastic partition membrane which is positioned so as to recede in the axial direction from the first stopper surface portion.
  • Precompression is configured to be applied to the second rubber portion of the elastic partition membrane.
  • the liquid-filled vibration isolator according to claim 4 is the liquid-filled vibration isolator according to claim 3, wherein the second stopper surface portion of the pair of clamping members is the partition means.
  • the end portion on the radially inner side is curved in a circular arc shape in cross section.
  • the liquid-filled vibration isolator according to claim 5 is any one of claims 1 to 4.
  • the pair of holding members includes a projecting portion projecting from one joint surface and a recess projecting from the other joint surface to receive the projecting portion.
  • a recessed portion and is configured to be fitted together in the axial direction of the partition means, and is configured to be able to contact the top of the protruding portion and the bottom of the recessed portion.
  • the liquid-filled vibration isolator according to claim 6 is the liquid-filled vibration isolator according to any one of claims 2 to 5, wherein the support plate member includes the support plate member.
  • the projecting wall is formed to project radially outward from one outer peripheral surface of the pair of sandwiching members, and the projecting wall facing the support plate member with a predetermined distance therebetween is one of the pair of sandwiching members or By being formed so as to project radially outward from the other side, an orifice groove having a substantially U-shaped cross section with an open peripheral side surface is formed on the outer peripheral portion of the partition means.
  • the liquid-filled vibration isolator according to claim 7 is the liquid-filled vibration isolator according to any one of claims 1 to 6, wherein the elastic partition membrane includes A thin plate member made of a metal material and embedded in a substantially thin plate shape, and an outer peripheral edge of the thin plate member is located on the radially outer side of the radially inner end surfaces of the pair of clamping members. It is configured to be located.
  • the liquid-filled vibration isolator according to claim 8 is the liquid-filled vibration isolator according to claim 7, wherein the elastic partition film has an opening formed substantially at the center. Thus, only the peripheral edge of the thin plate member is configured to be carried on the elastic partition film.
  • the liquid-filled vibration isolator according to claim 9 is the liquid-filled vibration isolator according to any one of claims 3 to 8, wherein the pair of clamping members
  • the first stopper surface portion has at least a radially inner side of the partition means spaced apart from the first rubber portion of the elastic partition film, and a gap is formed between the first stopper surface portion and the first rubber portion.
  • the liquid-filled vibration isolator according to claim 10 is the liquid-filled vibration isolator according to any one of claims 3 to 9, wherein the pair of sandwiching members has a first 1
  • the stopper surface part is in contact with the first rubber part of the elastic partition film at least on the radially outer side of the partition means
  • the thin plate member is configured such that an outer peripheral edge thereof is positioned on the radially outer side with respect to a contact portion between the first stopper surface portion and the first rubber portion.
  • the pair of clamping members is made of a thermoplastic resin material, and the joint surfaces thereof are welded by welding means. Therefore, the partition means can be formed integrally from a plurality of members.
  • the partitioning means can be inserted into the cylindrical body of the second fixture at once, a plurality of members constituting the partitioning means are provided as in the conventional liquid-filled vibration isolator. Since it is possible to simplify the insertion process that does not require multiple steps of insertion into the cylindrical body of the fixture, there is an effect that the assembly can be greatly improved accordingly. .
  • the partition means can be formed integrally from a plurality of members outside the liquid tank in advance, it can be relative to the previously inserted member as in a conventional liquid-filled vibration isolator. As a result, it is not necessary to perform the complicated operation of positioning the orifice entrance and exit in the liquid tank by positioning the rear member in the cylindrical body while positioning the correct rotation direction. In addition, it is possible to prevent the positional relationship between the orifice inlet and outlet from becoming unstable, so that the variation in dynamic characteristics can be reduced accordingly.
  • the pair of holding members are each made of a resin material, it is possible to achieve a significantly lighter partitioning means than that of a metal material. effective.
  • the joining surfaces of the pair of sandwiching members are configured to be welded by the welding means, for example, when the members made of metal material force are integrated by force, crimping means or welding means Compared to this, there is an effect that it can be integrated quickly and at a low cost.
  • the configuration integrated by the press-fitting means requires precise management of the dimensional tolerance of the press-fitted portion, and the management cost increases. Therefore, the present invention is configured to be integrated by the welding means. If the cost can be reduced, there is an effect.
  • the peripheral portion of the elastic partition membrane is sandwiched and fixed by the pair of sandwiching members, there is no need to vulcanize and bond the sandwiching member and the elastic partition membrane. Accordingly, it is possible to reduce the material cost by eliminating the need for an adhesive, and it is possible to avoid the deterioration of the function due to the adhesion peeling.
  • the support plate member is made of a metal material. Since both of them are insert-molded in one of the pair of clamping members, the supporting member and the partition means can be formed integrally.
  • the support plate member and the partitioning means can be integrally formed outside the liquid tank in advance, it can be relative to the previously inserted member as in a conventional liquid-filled vibration isolator. There is no need to perform the complicated operation of positioning the rotation direction and inserting the subsequent member into the cylindrical body and aligning the orifice inlet / outlet in the liquid tank. In addition, it is possible to prevent the positional relationship between the orifice inlet and outlet from becoming unstable, so that there is an effect that the variation in dynamic characteristics can be reduced accordingly.
  • the insert plate of the support plate member into one of the pair of sandwiching members can effectively maintain the positional relationship between the pair of sandwiching members and the support plate member.
  • an orifice member (corresponding to a pair of clamping members) is clamped and fixed in the axial direction between the support plate member and the vibration isolating base holding portion. Yes, because the orifice member was not sufficiently fixed in the rotation direction, the orifice member shifted in the rotation direction during the insertion process of the support plate member or during travel, and the orifice flow path length changed from the specified length. There was a problem of end.
  • the support plate member is insert-molded to the clamping member, it is possible to prevent the clamping member from shifting in the rotation direction. As a result, the positional relationship between the orifice inlet and outlet can be stabilized and variations in dynamic characteristics can be reduced.
  • the positional relationship between the support plate member and the sandwiching member can be maintained firmly.
  • the management costs increase, and the press-fitting process is required, resulting in increased manufacturing costs.
  • the support plate member can be integrated with the sandwiching member simultaneously with the molding process of the sandwiching member, so the process is simplified. As a result, the manufacturing cost can be reduced correspondingly, and the management cost can be reduced.
  • the second of the elastic partition membrane The rubber part is configured to rise in the axial direction, and the second stopper surface part of the pair of clamping members is configured to retract in the axial direction from the first stopper surface part, so in the assembled state of the partitioning means, Since the second rubber portion enters the second stopper surface portion, there is an effect that it is possible to constitute a means for preventing the elastic partition film from coming off from the clamping member.
  • the second stopper surface portion of these sandwiching members serves as the center of the partitioning means for the second rubber portion of the elastic partition film. Since the second rubber portion of the elastic partition membrane is pre-compressed by pressing in the direction, the second rubber portion is filled between the second stubber surface portions. There is an effect that it is possible to suppress the formation of a gap between the two rubber parts.
  • the partition means since it is possible to suppress the occurrence of air pockets, after integrating the partition means outside the liquid tank, the partition means is inserted into the cylindrical body of the second fixture in the liquid tank. However, it is possible to suppress the intrusion of air (bubbles) into the liquid enclosure, and as a result, there is an effect that the dynamic characteristics can be reliably ensured while improving the assemblability.
  • the claim 3 In addition to the effects exhibited by the liquid-filled vibration isolator, the second stopper surface is configured such that the radially inner end of the partition means is curved in a circular arc shape so that the elastic partition film can be moved back and forth. While improving the dynamic characteristics (for example, lowering the dynamic spring), it suppresses the occurrence of wear and damage due to contact with the end of the second stopper surface, thereby improving the durability of the elastic partition membrane. There is an effect that improvement can be achieved.
  • the pair of clamping members are provided with a projecting portion and a recessed portion on their joint surfaces, and are configured to be fitted together in the axial direction of the partition means, so that the joint surfaces of the sandwich members are welded to each other.
  • the welding work can be performed with the clamping member temporarily fixed, and the working efficiency can be improved.
  • the pair of holding members can be relatively positioned in the radial direction by fitting in the axial direction, the positioning work in the radial direction when performing the welding operation can be omitted. There is.
  • the protruding portion and the recessed portion provided on the joint surface are configured such that the top of the protruding portion and the bottom of the recessed portion can be brought into contact with each other.
  • the contact surface position can be brought closer to one end surface of the holding member by the length (the depth of the recessed portion). Therefore, the vibration transmitter (horn) of the ultrasonic welding means and the laser irradiator of the laser welding means arranged on the end surface of the clamping member and the contact surface (the top of the projecting portion and the bottom of the recessed portion) Since the distance between the contact surface and the contact surface can be reduced, it is possible to perform welding reliably.
  • V a so-called elastic membrane structure (the elastic partition membrane is arranged between the main and sub liquid chambers, and the hydraulic pressure fluctuation between the two chambers is absorbed by the reciprocating displacement of the elastic partition membrane,
  • the rigidity of the elastic partition film is constant regardless of the amplitude, an attempt to obtain a low dynamic spring characteristic at the time of small amplitude input (for example, The film thickness is reduced, or the rubber hardness is softened.)
  • the fluid pressure difference between the two chambers is over-relaxed by the elastic partition film, and the fluid flow effect is fully exhibited. (Ie, it becomes difficult for the liquid to flow to the orifice). As a result, there is a problem in that the attenuation characteristic is significantly reduced.
  • a so-called movable membrane structure (displacement restriction members are provided on both sides of the elastic partition membrane, and the amount of displacement of the elastic partition membrane is regulated from both sides to increase membrane stiffness, thereby increasing the high Since the elastic partition membrane abuts against the displacement restricting member (impacts), the displacement restricting member vibrates at the time of the collision, and the vibration is transmitted to the body frame. There was a problem that abnormal noise was generated by transmission. In addition, since the opening area for transmitting the hydraulic pressure of the main or sub liquid chamber to the elastic cutting membrane is narrowed by the displacement regulating member, it becomes difficult to absorb the hydraulic pressure difference, and low dynamic spring characteristics are obtained accordingly. There was also the problem of difficulty.
  • the liquid-filled vibration isolator of the present invention when the elastic partition film is displaced with the input of a relatively large amplitude vibration, the thin plate member constituted by the metal material force is provided. Since the rigidity of the elastic partition membrane can be reinforced and the deformation of the elastic partition membrane as a whole can be restricted, the liquid can smoothly flow to the orifice, and the fluid flow effect can be sufficiently exerted. As a result, a high attenuation characteristic can be obtained without generating abnormal noise.
  • the outer peripheral edge of the thin plate member is positioned on the radially outer side with respect to the radially inner end surface of the sandwiching member, the outer peripheral portion of the thin plate member when viewed in the axial direction of the partition means
  • a pair of clamping members can be polymerized to facilitate control of the reciprocating displacement of the elastic partition membrane.
  • S can.
  • the elastic partition membrane is reciprocally displaced to absorb the hydraulic pressure difference between the main and sub liquid chambers and to achieve low dynamic spring characteristics. Obtainable.
  • the opening area can be secured larger, and the hydraulic pressure difference can be absorbed more efficiently. Therefore, a low dynamic spring characteristic can be obtained with certainty.
  • an opening is provided at a substantially central portion of the elastic partition membrane. Since the opening is formed and only the peripheral edge of the thin plate member is embedded in the elastic partition membrane, the amount of rubber-like elastic material used is reduced by the opening of the opening, and the material This has the effect of reducing costs.
  • the opening area of the opening can be changed and the rigidity of the entire elastic partition membrane can be adjusted as appropriate. effective.
  • desired dynamic characteristics for example, high damping characteristics and low dynamic spring characteristics
  • the elastic partition There is a gap at least radially inward between the first rubber part of the membrane and the first staggered surface part of the clamping member.
  • the liquid-filled vibration isolator according to claim 10 in addition to the effects of the liquid-filled vibration isolator according to claims 3 to 9 of the claims,
  • the first rubber part of the elastic partition membrane and the first stubber surface part of the clamping member are in contact with each other at least on the radially outer side. Because it is configured to be located on the radially outer side of the part, the regulation of the reciprocating displacement of the elastic partition membrane is ensured, and the high damping characteristics when relatively large amplitude vibration is input There is an effect that can be obtained.
  • the first stopper surface portion may be configured to press the first rubber portion in the axial direction so that pre-compression is applied to the first rubber portion.
  • the rigidity of only the first rubber portion of the elastic partition membrane is increased, and accordingly, the elastic partition membrane is more difficult to reciprocate and the damping characteristics can be further increased.
  • FIG. 1 is a cross-sectional view of a liquid-filled vibration isolator according to one embodiment of the present invention.
  • FIG. 2 (a) is a top view of the elastic partition membrane, and (b) is a cross-sectional view of the elastic partition membrane along the lib-lib line in FIG. 2 (a).
  • FIG. 3 (a) is a top view of the upper clamping member
  • FIG. 3 (b) is a cross-sectional view of the upper clamping member along the line IIIb_IIIb in FIG. 3 (a).
  • FIG. 4 (a) is a top view of the lower holding member, and (b) is a cross-sectional view of the lower holding member taken along the line IVb-IVb in FIG. 4 (a).
  • FIG. 5 (a) is an exploded sectional view of the partition body 12, and (b) is a longitudinal sectional view of the partition body 12.
  • FIG. 6 is a partially enlarged sectional view of a partition body 12 in a modified example.
  • Second mounting bracket Second mounting bracket
  • Figure 1 1 is a cross-sectional view of a liquid-filled vibration isolator 100 according to an embodiment of the present invention.
  • the liquid-filled vibration isolator 100 is a vibration isolator for supporting and fixing the engine of the automobile and preventing the engine vibration from being transmitted to the vehicle body frame.
  • a first mounting bracket 1 mounted on the engine side
  • a cylindrical second mounting bracket 2 mounted on the vehicle body frame side below the engine
  • a vibration-isolating base 3 composed of a rubber-like elastic body that connects them. It is mainly equipped with.
  • the first mounting bracket 1 is formed in a substantially flat plate shape from a steel material or the like. As shown in FIG. 1, a mounting bolt 4 protrudes upward at a substantially central portion thereof. In addition, a positioning pin 5 for positioning a stabilizer fitting 8 to be described later projects from the side of the mounting bolt 4.
  • the second mounting bracket 2 includes a cylindrical metal fitting 6 on which the vibration-proof base 3 is vulcanized and a bottom metal fitting 7 attached to the lower side of the cylindrical metal fitting 6.
  • the cylindrical fixture 6 is formed in a cylindrical shape having an opening extending upward, and the bottom metal fitting 7 is formed in a cup shape from a steel material or the like.
  • a positioning bolt 7 a is press-molded into a convex shape while a mounting bolt 4 is projected.
  • the vibration isolator base 3 is formed from a rubber-like elastic body so as to have a substantially frustoconical cross section, and between the lower surface side of the first mounting bracket 1 and the upper end opening of the cylindrical bracket 6. Is vulcanized and bonded. Further, a rubber film 3a covering the inner peripheral surface of the cylindrical metal fitting 6 is connected to the lower end portion of the vibration isolating base 3.
  • the rubber film 3a has a protruding wall 14c and a support plate member of a partition body 12 to be described later. 16 is in close contact.
  • a protrusion 3b is formed at one end (right side of FIG. 1) of the vibration isolator base 3, and this protrusion 3b comes into contact with the stabilizer bracket 8 to It is configured to obtain a staggered action at the time.
  • a part of the cylindrical metal fitting 6 that secures the rigidity and strength is supported on the protruding portion 3b.
  • the diaphragm 9 is formed from a rubber-like elastic body into a rubber film shape having a partial spherical shape, and is vulcanized and bonded to a donut-like mounting plate 10 as viewed from above. As shown in FIG. 1, the diaphragm 9 is attached to the second mounting bracket 2 by fixing the mounting plate 10 between the tubular bracket 6 and the bottom bracket 7. As a result, the upper surface side of this diaphragm 9 A liquid sealing chamber 11 is formed between the lower surface side of the base 3.
  • an antifreeze liquid such as ethylene glycol is sealed.
  • the liquid sealing chamber 11 is divided into a main liquid chamber 11A on the vibration isolating base 3 side (upper side in FIG. 1) and a sub liquid chamber on the diaphragm 9 side (lower side in FIG. 1) by a partition 12 described later. It is divided into two rooms with 11B.
  • the partition body 12 includes an elastic cutting film 13 configured from a rubber-like elastic body in a substantially disc shape, and the peripheral portion of the elastic partition film 13 as an axial center of the partition body 12.
  • Upper and lower clamping members 14 and 15 that are clamped and fixed in the direction (vertical direction in FIG. 1), and a support plate member 16 that is insert-molded into the lower clamping member 15 are provided.
  • An orifice groove d having a substantially U-shaped cross section is formed on the outer peripheral surface side of the partition body 12, and covers the orifice groove d and the inner peripheral surface of the second mounting bracket 2 (tubular metal fitting 6). As shown in FIG. 1, an orifice 25 is formed between the rubber film 3a. The orifice 25 is an orifice channel that communicates the main liquid chamber 11A and the sub liquid chamber 11B.
  • the orifice 25 is communicated with the main liquid chamber 11A via the notch portion 14cl of the upper clamping member 14 and the sub liquid chamber via the through hole 16a of the support plate member 16 as described later. It communicates with 11B.
  • the partition body 12 includes a partition body receiving portion 3c provided on the vibration isolating base 3 and a support plate member 16 in the axial center direction of the second mounting bracket 2 (upper and lower surfaces in FIG. 1). Direction).
  • the partition body receiving portion 3c is formed as a stepped portion over the entire circumference on the lower surface side of the vibration isolating base 3, and the upper end surface of the upper clamping member 14 is locked by the stepped portion.
  • the partition receiving portion 3c is compressed and deformed, and the elastic restoring force of the partition receiving portion 3c acts on the upper clamping member 14 as a holding force.
  • the partition body 12 can be clamped and fixed firmly and stably.
  • the support plate member 16 has its inner peripheral side inserted into the lower clamping member 15, and its outer peripheral side has the second mounting bracket 2 (the cylindrical bracket 6 and the bottom).
  • the partition 12 is firmly held by the partition receiving portion 3c in combination with the holding force.
  • FIG. 2 (a) is a top view of the elastic partition membrane 13
  • FIG. 2 (b) is a cross-sectional view of the elastic partition membrane 13 along the lib-lib line of FIG. 2 (a).
  • the elastic partition film 13 is formed in a substantially disk shape from a rubber-like elastic body, and a thin plate member 31 formed in a substantially thin plate shape from a metal material is supported thereon.
  • the thin plate member 31 is formed in a substantially disc shape concentric with the elastic partition film 13.
  • an opening 13a (see FIG. 2 (a)) that is substantially circular in the axial direction is formed on both sides at a substantially central portion of the elastic partition film 13, and the thin plate member 31 has a peripheral portion thereof. Only is embedded in the elastic partition membrane 13. Further, the outer peripheral edge of the thin plate member 13 is positioned at a boundary portion between a first rubber portion 13c and a second rubber portion 13d described later.
  • the elastic partition film 13 includes a rubber film portion 13b in which a thin plate member 31 is embedded and formed to have a substantially constant thickness, and a radially outer side than the rubber film portion 13b.
  • the first rubber portion 13c which is formed in a tapered shape that is located on the side and becomes thinner toward the radially outer side (that is, constricted in the axial direction (Fig. 2 (b) vertical direction)) and the first rubber
  • the second rubber portion 13d is located on the radially outer side of the portion 13c and rises in the axial direction to be higher than the first rubber portion 13c.
  • the elastic partition film 13 has the first and second rubber portions 13c, 13d as upper and lower clamping members.
  • FIG. 3 (a) is a top view of the upper clamping member 14
  • FIG. 3 (b) is a cross-sectional view of the upper clamping member 14 along the line IIIb_IIIb in FIG. 3 (a).
  • the upper holding member 14 is formed in a substantially annular shape from a thermoplastic resin material, and the bonding surface of the upper holding member 14 is welded by the welding means while holding the peripheral portion of the elastic partition film 13 together with the lower holding member 15 described later. It is welded and integrated with the lower clamping member 15 and the elastic partition film 13 (see FIG. 5).
  • the upper clamping member 14 includes a first stopper surface portion 14a that presses the first rubber portion 13c of the elastic partition film 13, and a radially outward side from the first stopper surface portion 14a. And a second stopper surface portion 14b that is formed (recessed) so as to recede in the axial direction from the first stopper surface portion 14a. Note that the first stopper surface portion 14a is formed such that the radially inner end is curved in a circular arc shape in cross section.
  • a protruding wall 14c is formed on the outer peripheral side of the upper clamping member 14 so as to protrude radially outward.
  • the overhanging wall 14 is an orifice forming wall for forming an orifice 25 (see FIG. 1), and is opposed to a later-described support plate member 16 with a predetermined interval (see FIG. 5).
  • the overhanging wall 14 is formed with a notch portion 14cl having a substantially U-shape when viewed from above.
  • This notch 14cl is an orifice inlet / outlet for communicating the orifice 25 with the main liquid chamber 11A.
  • the upper holding member 14 is provided with a recessed portion 14e on the radially outward side of the second stopper surface portion 14b.
  • the inner surface of the portion 14e is a bonding surface that is welded to the lower clamping member 15 by welding means.
  • the recessed portion 14e is configured to be able to fit in the axial direction with the protruding portion 15c (see FIG. 4) of the lower clamping member 15. Yes.
  • the bottom portion 14el of the recessed portion 14e and the top portion 15cl of the protruding portion 15c are configured to be able to contact each other.
  • 14el and top 15cl are mainly welded by welding means.
  • FIG. 4 (a) is a top view of the lower clamping member 15, and FIG. 4 (b) is a lower clamping member 1 taken along the line IVb-IVb in FIG. 4 (a).
  • FIG. 1 A first figure.
  • the lower holding member 15 is formed in a substantially annular shape from a thermoplastic resin material. As described above, the lower holding member 15 holds the peripheral portion of the elastic partition film 13 together with the upper holding member 14 by the welding means. The joint surfaces are welded to each other, thereby being integrated with the upper clamping member 14 and the elastic partition film 13 (see FIG. 5).
  • the lower clamping member 15 includes a first stopper surface portion 15a that presses the first rubber portion 13c of the elastic partition film 13, and a radially outer side than the first stopper surface portion 15a. And a second stopper surface portion 15b which is formed (recessed) so as to recede in the axial direction from the first stopper surface portion 15a.
  • the first stopper surface portion 15a is formed such that the radially inner end is curved in a circular arc shape in cross section.
  • the lower clamping member 15 is provided with a protruding portion 15c protruding outward in the radial direction of the second stopper surface portion 15b.
  • the outer surface of the installation portion 14e is a bonding surface that is welded to the upper clamping member 14 by welding means.
  • the projecting portion 15c is configured to be able to fit in the axial direction with the recessed portion 14e (see FIG. 3) of the upper clamping member 14.
  • the top portion 15cl of the projecting portion 15c and the bottom portion 14el of the recessed portion 14e are configured to contact each other.
  • the contact portions are mainly welded by the welding means.
  • the lower clamping member 15 is formed by a support plate member 16 force S insert molding made of a metal material.
  • the support plate member 16 is formed so as to project radially outward from the outer peripheral side of the lower clamping member 15, whereby the outer peripheral portion of the partition 12 has a substantially U-shaped cross-section with a peripheral side surface open.
  • An orifice groove d is formed (see FIGS. 1 and 5).
  • the support plate member 16 is formed with a through hole 16a having a substantially elongated hole shape when viewed from above in the plate thickness direction (up and down direction in FIG. 4 (b)).
  • the through hole 16a is an orifice inlet / outlet for communicating the orifice 25 with the sub liquid chamber 11B.
  • a vertical wall 15d for isolating the orifice 25 in the circumferential direction is formed on the side of the through hole 16a (upper side in Fig. 4 (a)).
  • FIG. 5 (a) is an exploded cross-sectional view of the partition body 12, and FIG. 5 (b) is a vertical cross-sectional view of the partition body 12.
  • FIG. 5 (a) is an exploded cross-sectional view of the partition body 12
  • FIG. 5 (b) is a vertical cross-sectional view of the partition body 12.
  • the elastic partition film 13 is clamped by the upper and lower clamping members 14, 15 on both sides.
  • temporary fixing and positioning in the radial direction (FIG. 5 (a) left-right direction) are performed by press-fitting (fitting) the convex portion 15c of the lower clamping member 15 into the concave portion 14e of the upper clamping member 14.
  • the upper clamping member 14 is further pushed toward the lower clamping member 15 in the axial direction, so that the joint surfaces of the upper and lower clamping members 14 and 15 (that is, the bottom of the recessed portion 14e) 14el and the top portion 15cl) of the projecting portion 15c are brought into contact with each other.
  • the first and second stopper surface portions 14a, 14b, 15a, 15b of the upper and lower clamping members 14, 15 move the first and second rubber portions 13c, 13d of the elastic partition film 13 in the axial direction.
  • Fig. 5 (a) Up and down direction) Pre-compression is applied to the first and second rubber portions 13c and 13d which are applied with force.
  • the first and second rubber portions 13c, 13d are filled in a space surrounded by the first and second stopper surface portions 14a-15b.
  • the joining surfaces of the upper and lower holding members 14, 15 in contact with each other that is, the bottom portion 14el of the recessed portion 14e and the top portion 15cl of the protruding portion 15c
  • the partitioning means 12 is integrally configured by the plurality of members 13-16.
  • examples of the welding means include known techniques such as an ultrasonic welding method and a laser welding method.
  • the ultrasonic welding method pressure and ultrasonic vibrations are applied to the joint surfaces of the upper and lower clamping members 14 and 15 (that is, the bottom 14el of the concave portion 14e and the top 15cl of the convex portion 15c), and the friction between them.
  • the resin material on the bonding surface is melted and bonded by heat.
  • the upper holding member 14 is made of a light-transmitting thermoplastic resin material.
  • the lower holding member 15 is made of a light-absorbing thermoplastic resin material, and pressure is applied to the joining surfaces (that is, the bottom portion 14el of the concave portion 14e and the top portion 15cl of the convex portion 15c).
  • the top 15cl (light-absorbing resin material) of the projecting portion 15c generates heat and the heat is also transmitted to the bottom 14e 1 of the recessed portion 14e. Therefore, the joint surface is melted and joined.
  • the welding by the above-mentioned welding means on the joint surface may be performed partially in the circumferential direction (for example, four force points at 90 ° intervals in the circumferential direction) or all in the circumferential direction. It may be performed around the lap. If it is performed partially, the welding cost can be reduced. On the other hand, if it is performed all around, the reliability of the bonding strength can be ensured.
  • the outer peripheral edge of the thin plate member 13 is the end face on the radially inner side of the upper and lower holding members 14, 15 It is comprised so that it may be located in the diameter direction outside rather than. Therefore, when viewed in the axial direction of the partition 12, the outer peripheral edge of the thin plate member 13 is configured to overlap with the upper and lower clamping members 14 and 15.
  • the liquid filled type vibration isolator provided between the engine of the automobile and the vehicle body frame has been described as an example.
  • the present invention is not necessarily limited thereto.
  • the present invention may be applied to a liquid-filled vibration isolator provided between the transmission and the vehicle body frame.
  • the first rubber portion 13c of the elastic partition film 13 is pre-compressed in the axial direction from the first stopper surface portions 14a, 15a of the upper and lower clamping members 14, 15.
  • a gap is provided between the first rubber part 13c of the elastic partition film 13 and the first staggered surface parts 14a, 15a of the upper and lower clamping members 14, 15 It can be configured as well. This facilitates reciprocating deformation of the elastic partition film 13. When a relatively small amplitude vibration is input, the low dynamic spring characteristic can be ensured.
  • the first rubber portion 13c of the elastic partition film 13 may be configured to be pre-compressed in the axial direction. Further, as shown in FIG. 6, the outer peripheral edge of the thin plate member 31 is configured to be positioned radially outward from the contact portion between the first rubber portion 13c and the first stopper surface portions 14a and 15a. Also good. As a result, it is possible to obtain a high damping characteristic when a relatively large amplitude vibration is input while securing a low dynamic spring characteristic when a relatively small amplitude vibration is input.

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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 a trait à un dispositif d'isolation des vibrations avec joint liquide qui permet d'augmenter l'assemblage tout en stabilisant une variation des caractéristiques dynamiques. Dans le dispositif, les éléments de soutien supérieur et inférieur (14) et (15) sont constitués d'un matériau de résine thermoplastique, une plaque de support (16) est moulée par insertion dans l'élément de soutien inférieur (15) et les faces de jonction de l'élément de soutien supérieur (14) et de l'élément de soutien inférieur (15) maintenant le bord périphérique d'un film de partition élastique (13) sont fusionnées l'une à l'autre par un moyen de fusion. De même, une cloison (12) peut être intégralement formée de plusieurs éléments. En conséquence, puisque ces opérations compliquées dans un dispositif d'isolement de vibrations avec joint liquide traditionnel, puisqu'un élément consécutif est inséré dans une deuxième fixation de montage (2) tout en positionnant sa direction de rotation relativement à un premier élément inséré et que le positionnement de l'entrée et de la sortie d'un orifice réalisé dans un réservoir de liquide n'est pas nécessaire, l'assemblage peut être remarquablement augmenté, l'instabilité de la relation positionnelle entre la sortie et l'entrée de l'orifice peut être évitée et la variation des caractéristiques dynamiques réduites en conséquence.
PCT/JP2004/012749 2004-09-02 2004-09-02 Dispositif d'isolation des vibrations avec joint liquide WO2006025111A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2005518102A JP4266981B2 (ja) 2004-09-02 2004-09-02 液封入式防振装置
PCT/JP2004/012749 WO2006025111A1 (fr) 2004-09-02 2004-09-02 Dispositif d'isolation des vibrations avec joint liquide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/012749 WO2006025111A1 (fr) 2004-09-02 2004-09-02 Dispositif d'isolation des vibrations avec joint liquide

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WO2006025111A1 true WO2006025111A1 (fr) 2006-03-09

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209242A (ja) * 1986-03-07 1987-09-14 Honda Motor Co Ltd 防振支持装置
JPH0198722A (ja) * 1987-09-18 1989-04-17 Metzeler Kautschuk Gmbh 二室エンジン支持体
JPH01106651U (fr) * 1988-01-11 1989-07-18
JPH03168439A (ja) * 1989-11-09 1991-07-22 Carl Freudenberg:Fa 液圧緩衝式ゴム受座
JPH0414845U (fr) * 1990-05-30 1992-02-06
JPH05248485A (ja) * 1992-03-06 1993-09-24 Kurashiki Kako Co Ltd 液封マウント装置用オリフィス盤

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209242A (ja) * 1986-03-07 1987-09-14 Honda Motor Co Ltd 防振支持装置
JPH0198722A (ja) * 1987-09-18 1989-04-17 Metzeler Kautschuk Gmbh 二室エンジン支持体
JPH01106651U (fr) * 1988-01-11 1989-07-18
JPH03168439A (ja) * 1989-11-09 1991-07-22 Carl Freudenberg:Fa 液圧緩衝式ゴム受座
JPH0414845U (fr) * 1990-05-30 1992-02-06
JPH05248485A (ja) * 1992-03-06 1993-09-24 Kurashiki Kako Co Ltd 液封マウント装置用オリフィス盤

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JP4266981B2 (ja) 2009-05-27

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