CN100476237C

CN100476237C - Fluid filled vibration damping device and method of producing the same

Info

Publication number: CN100476237C
Application number: CNB2007100069882A
Authority: CN
Inventors: 南泽忠光
Original assignee: Sumitomo Riko Co Ltd
Current assignee: Sumitomo Riko Co Ltd
Priority date: 2006-01-31
Filing date: 2007-01-31
Publication date: 2009-04-08
Anticipated expiration: 2027-01-31
Also published as: CN101012861A

Abstract

A fluid filled vibration damping device including an elastic body connecting a first and second mounting member, a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by a flexible rubber film. The second mounting member is press fitted into a tubular holder member having an annular holding portion integrally formed at its lower end projecting radially inwardly. A cover plate member having an outside diameter smaller than an inside diameter of the holder member is disposed within the holder member with an outer peripheral portion is fixedly clamped by the second mounting member and the annular holding portion. A sealing rubber is disposed for fluid-tightly closing a gap formed between the clamped portion so that an tightly closed air chamber defined by the cover plate member is formed on a back side of the flexible rubber film.

Description

Fluid-filled type vibration damping device and manufacture method thereof

Cross reference

Whole disclosures of specification, accompanying drawing and the summary of the Japanese patent application 2006-267400 that the Japanese patent application 2006-023658 that on January 31st, 2006 submitted to and on September 29th, 2006 submit to are incorporated herein by reference.

Technical field

The present invention relates to a kind of manufacture method that can present fluid-filled type vibration damping device and this device of effectiveness in vibration suppression based on the mobilization of the incompressible fluid that seals, this incompressible fluid flows through the aperture path that is connected between compression chamber and the balance cylinder.

Background technique

Known in the state of the art be used to be installed between the parts that constitute the vibration conveying system, can be based on the fluid-filled type vibration damping device that presents effectiveness in vibration suppression of the characteristic of resonance or other mobilization or sealing incompressible fluid within it, for example damping supporting spare or vibration damping coupling piece.JP-A-06-341483 discloses the example of a this vibration damping equipment, and wherein an opening of second assembling set of first assembling set next-door neighbour tubulose is located, and first assembling set is connected by primary elastomeric elastomeric resilient ground with second assembling set.For example, this device is as the motor car engine bearing.

In this fluid-filled type vibration damping device, another opening of second assembling set of tubulose is sealed shut by the flexible rubber membrane fluid, forms fluid-tight region thus between the opposed faces of primary elastomeric elastomer and flexible rubber film.Usually, fluid-tight region is by a channels separated by the supporting of second assembling set, therefore form the balance cylinder that compression chamber that its wall section ground limits by the primary elastomeric elastomer and its wall section ground are limited by the flexible rubber film, while one aperture path makes can the fluid connection between compression chamber and the balance cylinder.Under this device, when inputted vibration between first and second assembling sets is loaded, the relative hydrodynamic pressure fluctuation between compression chamber and balance cylinder will reduce.According to this hydrodynamic pressure fluctuation, fluid is forced to flow through the aperture path between these two chambers, therefore presents the effectiveness in vibration suppression based on the mobilization of resonance or fluid.

In recent years, be the damping capacity of the fluid-filled type vibration damping device that strengthens this structure, proposed to provide a lid metalwork that is used to cover the outer surface of flexible rubber film, therefore the side relative with the balance cylinder at the flexible rubber film forms the confined air air chamber.More specifically, the confined air air chamber of having attempted utilizing formation like this is used for controlling the static spring constant of vibration damping equipment and the ratio of dynamic spring constant by means of the pneumatic spring that is generated by the confined air air chamber.

Aforementioned document JP-A-06-341483 discloses a kind of specified structure, and relative second assembling sets of outer periphery (support column) of its middle cover metalwork (for example airtight pane) are riveted regularly with the outer periphery of flexible rubber film (diaphragm).

Yet proposed pass through to make with the package assembly that the flexible rubber film is riveted processing is difficult to assembling flexible rubber film in a large amount of incompressible fluids, produces cross-section effect thereby convection cell enters fluid-tight region.More particularly, if plan to fix flexible rubber film and lid metalwork, then be difficult to stop fluid to enter the confined air air chamber by riveted joint.The special operational that this shortcoming need be added is for example discharged the fluid that enters into the confined air air chamber via floss hole after riveted fixing, and by methods such as rivet clasp sealing drain opening, instructs as JP-A-2003-206976.

In order to address this problem, this assignee is at its disclosed preferential US patent application No.5, a kind of technology is proposed in 628498, wherein after incompressible fluid has been filled by compression chamber and balance cylinder, on fluid-filled type vibration damping device, be press-fitted the cup-shaped metal frame that unification has the bottom, so that the base section of this metal frame relies on the flexible rubber film phonograph seal, thereby form the confined air air chamber.

Yet the structure of the fluid-filled type vibration damping device that is proposed need have the metal frame of bottom, and this is in application processing or similarly produce adverse influence to making efficient in the processing.That is to say, need carry out application so that antirust or corrosion protection metal frame.Can be by soaking or spraying application to have the metal frame of bottom.It is residual that this produces the coating of not expecting in the bottom of metal frame easily, thereby need the processing of the removing coating of trouble inevitably.

In addition, because metal frame is unsuitable for stretch process because of profile and intensity, therefore can should be metal reinforced calmly to fluid-filled type vibration damping device by press fit.Yet, rely on the easy damage that for example when being pressed into, causes caulking gum of fixation arrangement of press fit.

Summary of the invention

Therefore an object of the present invention is to provide a kind of fluid-filled (filling) formula vibration damping (vibrationproof) device of novel structure, wherein the dorsal part at the flexible rubber film forms the confined air air chamber effectively, and step that can the fluid-filled regional fill fluid of subtend and/or the application step that is used for carriage etc. cause adverse effect.Therefore another object of the present invention provides a kind of method of making the novelty of fluid-filled type vibration damping device of the present invention.

At least one following aspect according to the present invention can realize above-mentioned and/or optional aim of the present invention.Element used in following aspect and/or each example of the present invention can be used in any possible optional combination.Be to be understood that, principle of the present invention is not limited to the combination of these inventive aspects and technical characteristics, but confirm that according to disclosed instruction in specification full text of the present invention and accompanying drawing perhaps the scheme that can expect by full content of the present disclosure according to those skilled in the art is determined.

First aspect of the present invention provides a kind of fluid-filled type vibration damping device, comprising: first assembling set; Second assembling set of tubulose, it is arranged so that first assembling set is positioned at first open end, one side of this second assembling set; The primary elastomeric elastomer that flexibly connects first open end of first assembling set and second assembling set and fluid-tight ground sealing, second assembling set; The flexible rubber film of second open end of fluid-tight ground sealing second assembling set; Be arranged between the opposed faces of primary elastomeric elastomer and flexible rubber film and by the divider of second assembling set supporting; Be formed on a side of divider and wherein be sealed with the compression chamber of incompressible fluid, this compression chamber partly limits and bears the vibrations input by the primary elastomeric elastomer; Be formed on the opposite side of divider and wherein be sealed with the balance cylinder of incompressible fluid, this balance cylinder is partly limited and is allowed to have variable volume by the flexible rubber film; Connect compression chamber and balance cylinder and aperture path by utilizing divider to form; The tubulose holder, second assembling set is press-fit into wherein so that this second assembling set is suitable for being installed on the target part that needs vibration damping by holder, and this holder comprises that being integrally formed in an one open end sentences just radially inwardly outstanding annular retaining part; Diapire spare, this diapire spare has the external diameter littler than the internal diameter of holder, with its outer peripheral edge portion be held that mode that the annular retaining of part partly supports is arranged in this holder and between second open end of second assembling set and annular retaining part by clamping regularly, wherein second open end of second assembling set has the taper outer circumferential face that diameter reduces gradually towards the top, and be provided with caulking gum and be formed on second open end of second assembling set and the gap between diapire spare and the holder to be used for fluid-tight ground sealing, thereby form the confined air air chamber that is partly limited by diapire spare in a side relative with the balance cylinder, wherein this flexible rubber film is inserted between this balance cylinder and this confined air air chamber.

In the fluid-filled type vibration damping device of this structure, be provided with the diapire spare sealing that an open end of tubulose holder and this holder is independently formed.By the second assembling set press fit being advanced another open end of holder, the outer peripheral edge portion of this diapire spare partly and between second assembling set is clamped vertically regularly in the annular retaining at an open end place that is formed at holder.In addition, caulking gum provides the sealing of fluid-tight formula for the fixed clamp portion place between the annular retaining part and second assembling set.

Therefore, with fluid filled after compression chamber and the balance cylinder, can be with of holder and the diapire spare assembling of this fluid-filled type vibration damping device body in atmosphere with independent preparation, thus can form the confined air air chamber of expectation at the dorsal part of flexible rubber film.Under this set, the formation of confined air air chamber can the subtend compression chamber and balance cylinder's operation of filling incompressible fluid have a negative impact.In addition, can be easily and prevent that definitely incompressible fluid from entering the confined air air chamber, thereby help the formation of confined air air chamber.

In addition, owing to adopted the bottom to have the tubular element of opening in the holder, device of the present invention can not appear at the coating used in the residual pretreatment in bottom of holder or the problem of treatment fluid.

Also can form caulking gum at second open end of second assembling set.Yet, partly or on the outer peripheral edge portion at diapire spare forming caulking gum by annular retaining at holder, can prevent because of second assembling set being press fit into the damage that on the holder caulking gum is caused.This set can form highly reliably by the caulking gum by the part place of the holder and the second assembling set clamping of diapire spare, and the reliable fluid-tight formula of height of sealing configuration and confined air air chamber seals.

Preferably, the caulking gum outer peripheral edge portion that joins diapire spare by sulfuration to is outstanding vertically with the inboard towards holder.

But this set disposed of in its entirety diapire spare and caulking gum, and can be accurately and the position that stably caulking gum is positioned to expect, and do not need special positioning action.Direction-is for example arranged up and down or under the inside and outside situation at caulking gum, can determine the assembly direction of caulking gum, therefore be beneficial to the assembling of caulking gum, the direction fault when having eliminated fitting tight rubber simultaneously by diapire spare.As a result, can obtain the fluid sealability of the expectation of confined air air chamber easier and highly stablely.

More preferably, caulking gum has the taper inner peripheral surface that reduces gradually to its bottom from its top from the axially extended tubulose outer circumferential face of the outer peripheral edge portion of diapire spare and its diameter, wherein sealing rubber be arranged in the gap between second open end that is formed at second assembling set and diapire spare and the holder and axial direction with axial vertical direction on be compressed.

By using aforesaid caulking gum structure, the outer circumferential face of second open end of the inner peripheral surface of caulking gum and second assembling set all similarly tilts, and makes that the surface energy of these two inclinations is overlapped with bigger area of contact.In addition, the outer circumferential face of caulking gum in a tubular form, caulking gum can overlap the inner peripheral surface of holder with enough area of contact thus.The result, the axial pressure that acts on second assembling set, holder and diapire spare can be sent to caulking gum effectively, thereby the diapire spare holding position place between the holder and second assembling set in axial direction with axially vertical direction produces the elastic characteristic of caulking gum effectively.Therefore, caulking gum can be with bigger force deformation filling the gap in the holding position, thereby further strengthen the fluid sealability in the confined air air chamber.

Preferably, first open end of second assembling set joins on the elastomeric outer circumferential face of primary elastomeric by sulfuration, on the outer periphery of flexible rubber film, the rubber layer retaining ring is arranged by the sulfuration joint, second open end of second assembling set is arranged on the rubber layer retaining ring simultaneously, and stands the undergauge operation so that the rubber layer retaining ring is fixed on second assembling set.

Under this set, in a large amount of incompressible fluids, the rubber membrane fixed block is press fit into second open end that joins second assembling set on the elastomeric outer circumferential face of primary elastomeric by sulfuration to, and second open end of this second assembling set carries out undergauge processing.Like this, can highly make efficient ground and form compression chamber and balance cylinder, and fill incompressible fluid.In addition, by carrying out the undergauge operation, can form the taper outer circumferential face of second open end of second assembling set simultaneously, and not need other special processing with the diameter that on axially outside direction, reduces gradually against second open end of second assembling set.Therefore, desired fluid-filled type vibration damping device can be more easily manufactured.

In a kind of preferred form of the present invention, holder is included in the exhaust port of the wall that runs through this holder at the position in the press fit direction the place ahead that is positioned at second assembling set.

By forming exhaust port, if an open end of holder by the slightly diapire spare sealing of fluid sealability, it can stop the increase of unnecessary air pressure in the confined air air chamber that causes in the holder owing to the second assembling set press fit is advanced effectively.Preferably, exhaust port is formed on the caulking gum on the open end that is positioned at the holder that caulking gum contacts with it vertically.

Should be noted that before thereby its press-fit ends position of second assembling set arrival provided the sealing of fluid-tight formula with the compressive strain that produces caulking gum, an open end of holder needn't be by the sealing of fluid-tight ground.Therefore, the air leakage in axial end portion by being formed on holder and the gap between the diapire spare can be utilized the increasing or this is increased and minimize of internal pressure that the second assembling set press fit is advanced this holder during the holder to eliminate energetically.

Preferably, caulking gum is bonded on diapire spare by sulfuration outer peripheral edge portion with towards the holder inner shafts to outstanding, sealing rubber has the following external diameter of the original state before assembling, this external diameter is littler than the internal diameter of holder, and as long as second assembling set is advanced holder by press fit, second open end that caulking gum just advances second assembling set in the holder by press fit carries out the expanded in diameter distortion, thereby caulking gum keeps closely contacting with the inner peripheral surface of holder so that provide the fluid-tight formula to seal to second open end and the gap between diapire spare and the holder that is formed on second assembling set.

According to this set, before second assembling set is advanced holder by press fit, between the inner peripheral surface of the outer circumferential face of caulking gum and holder, form given gap.Therefore, when second assembling set was advanced in the holder by press fit, the holder inner air can be discharged to the perimeter by this gap.In addition, after second assembling set was advanced holder by press fit, caulking gum was compressed by second open end of second assembling set, therefore carried out the expanded in diameter distortion.In this state, be formed on the sealing of second open end of second assembling set and caulking gum fluid-tight that the gap between diapire spare and the holder is deformed ground, therefore guarantee the fluid-tight formula sealing in the confined air air chamber.Thereby this set can easily form the confined air air chamber that can generate suitable pneumatic spring characteristic according to needed vibration characteristics.

That is, in this preferred form of the present invention, the gap that forms between the inner peripheral surface of the outer circumferential face of the caulking gum of initial or unassembled state and holder is used as exhaust port, need not form exhaust port at holder etc. thus.This helps the manufacturing of fluid-filled type vibration damping device, has also eliminated the possible infringement that the intensity to holder etc. causes that penetrates because of exhaust port.

In a preferred form of the invention, be formed with second caulking gum on the bottom surface of the outer peripheral edge portion of diapire spare, this second caulking gum is arranged between the annular retaining part of the outer peripheral edge portion of diapire spare and holder and is compressed vertically on whole circumference.

This second caulking gum cooperates the fluid-tight formula sealing that is formed on second open end and the gap location between diapire spare and the holder of second assembling set with further enhancing with described caulking gum.Second caulking gum just in time overlapped by second caulking gum of compression vertically-promptly between the outer peripheral edge portion of the annular retaining of holder part and diapire spare annular retaining partly on-before, because second caulking gum that is made of rubber material has coarse surface, so between the faying surface of second caulking gum and ring-type holder, form micro-gap.Therefore, during holder was advanced in the second assembling set press fit, the air that is contained in the zone that is formed between second assembling set and the holder can spill from these small gaps.In addition, after holder was advanced in the second assembling set press fit, second caulking gum was compressed between the outer peripheral edge portion of annular retaining part and diapire spare vertically, guarantees the sufficient fluid-tight of this position thus.This set can further strengthen the fluid-tight performance of confined air air chamber, is limited in the increase of the second assembling set press fit being advanced internal pressure during the holder simultaneously.

Preferably, the surface of the annular retaining part of the holder of the bottom surface of the outer peripheral edge portion of diapire spare and compression second caulking gum all is the tabular surface that extends on whole circumference with given width on axial Vertical direction.

Under this set, along with second assembling set is advanced in the holder by press fit vertically, pressure is sent to second caulking gum between the annular retaining part of the outer peripheral edge portion of diapire spare and holder effectively.Therefore, show the elastic characteristic of second caulking gum effectively, thus the fluid-tight formula sealing between the annular retaining part of the outer peripheral edge portion of enhancing diapire spare and holder.

Preferably, caulking gum be included in the circular protrusion that extends on the whole circumference with the contacted inner peripheral surface of second open end second assembling set.

Under this set, when caulking gum was compressed between second open end of second assembling set and diapire spare and the holder, circular protrusion carried out resiliently deformable and keeps closely contacting with second open end of second assembling set.Because the setting of circular protrusion so can make the caulking gum of q.s carry out compressive strain, has also strengthened the fluid-tight formula sealing of confined air air chamber thus.As long as should be pointed out that the caulking gum that q.s can be provided, circular protrusion can have different shape.Preferably, circular protrusion forms by the inner peripheral surface outstanding given amount on radially inner direction that makes caulking gum.

Preferably, the middle body of diapire spare is outwards outstanding vertically from the open end of holder, this open end is the open end at described annular retaining part place, " outwards " be meant towards the compression chamber of vibration damping equipment or outside, balance cylinder, just the direction of extending away from this compression chamber or balance cylinder.

The use of the diapire spare of this structure make the confined air air chamber the flexible rubber film can on outside direction, carry out dilatating and deformable largely.Especially, distance between flexible rubber film and the diapire spare can reach maximum at the middle body at the position of the dilatating and deformable amount maximum of this flexible rubber film, thereby has stoped effectively because the infringement to the flexible rubber film that interference therein produces near diapire spare.

Second aspect of the present invention provides the method for the fluid-filled type vibration damping device of a kind of manufacturing first aspect according to the present invention, method comprises: prepare the fluid-filled type vibration damping device body that is formed with compression chamber and balance cylinder in it dividually with holder and diapire spare, wherein first and second assembling sets connect by the primary elastomeric elastomer; With holder diapire spare is set relatively, wherein the outer peripheral edge portion of the diapire spare annular retaining that overlaps holder partly goes up and partly supports in place by this annular retaining; The second assembling set press fit of fluid-filled type vibration damping device body is advanced in the holder so that the outer peripheral edge portion of diapire spare is clamped between the annular retaining part of this second assembling set and this holder regularly, and the sealed rubber fluid-tight ground, gap that is formed on simultaneously between second assembling set and holder and the diapire spare seals.

The method according to this invention, the structure of fluid-filled type vibration damping device of the present invention can show fabulous technical advantage, can be by effectively with good work efficiency production.

Preferably, this method also comprises the steps: to prepare the integrated vulcanizing forming product, and wherein caulking gum joins to by sulfuration on the outer peripheral edge portion of diapire spare so that outstanding vertically from the diapire spare that has the cylindricality outer circumferential face; With respect to holder this integrated vulcanizing forming product is set, wherein the bottom surface of the outer peripheral edge portion of the relative diapire spare of a side of giving prominence to caulking gum is overlapping and be positioned on the annular retaining part of holder; The second assembling set press fit of fluid-filled type vibration damping device body is advanced in the holder, thereby outer circumferential face and the gap inner peripheral surface of holder between of the air in the space between second assembling set and holder by being formed on the integrated vulcanizing forming product is discharged into the outside from an open end of holder; Second open end that advances second assembling set in the holder by press fit makes caulking gum produce the expanded in diameter distortion then, seals to fluid-tight thereby caulking gum keeps closely contact with the inner peripheral surface of holder and is formed on second open end of second assembling set and the gap between diapire spare and the holder.

This method for optimizing can be eliminated the increase of the internal pressure in the confined air air chamber, also can strengthen the fluid-tight formula sealing in the confined air air chamber.In addition, make Sealing joins diapire spare to by sulfuration outer peripheral edge portion so that the integrated vulcanizing forming product to be provided, a side opposed bottom surface that is engaged with caulking gum of the outer peripheral edge portion of diapire spare is located and is supported by the ring-type holder.Thereby the assembling of caulking gum is easier, more helps the manufacturing of vibration damping equipment of the present invention.

Description of drawings

By will clearer aforementioned and/or other purpose, feature and advantage of the present invention below in conjunction with the accompanying drawing description of a preferred embodiment, reference character identical in the accompanying drawing be represented components identical, wherein:

Fig. 1 be the form according to first embodiment of the invention be the motor car engine bearing fluid-filled type vibration damping device axially or the vertical cross-section front view;

Fig. 2 is the vertical cross-section of the elastomeric integrated vulcanizing forming product of the primary elastomeric of engine bearer among Fig. 1;

Fig. 3 is the vertical cross-section of integrated vulcanizing forming product of the diaphragm of engine bearer among Fig. 1;

Fig. 4 is the vertical cross-section of the carriage of engine bearer among Fig. 1;

Fig. 5 is the vertical cross-section of integrated vulcanizing forming product that has the caulking gum of diapire spare, and it is an assembly of engine bearer among Fig. 1;

Fig. 6 is the partial enlarged view of Fig. 5;

Fig. 7 is the partial enlarged view of Fig. 1;

Fig. 8 is the amplification cross sectional view of explanation according to a manufacturing step of the motor car engine bearing of second embodiment of the invention;

Fig. 9 be the form according to third embodiment of the invention be the motor car engine bearing fluid-filled type vibration damping device axially or the vertical cross-section front view;

Figure 10 is the partial enlarged view of Fig. 9;

Figure 11 is the amplification cross sectional view of a manufacturing step of the motor car engine bearing of explanatory drawing 9;

Figure 12 is the partial enlarged view of Figure 11; And

Figure 13 illustrates the amplification cross sectional view of a manufacturing step of motor car engine bearing according to another embodiment of the present invention.

Embodiment

At first, be depicted as the motor car engine bearing 10 of the fluid-filled type vibration damping device that belongs to first embodiment of the invention referring to Fig. 1.This engine bearer 10 is made of first assembling set 14 of metal and second assembling set 16 of metal, and described assembling set connects by primary elastomeric elastomer 18 elasticity.Although not shown, this first assembling set 14 is attached to the Package power side, and second assembling set 16 is by being attached to the vehicle body side of automobile as the carriage 20 of holding member, thereby Package power mode with vibration damping on car body is supported.In the following description, Vertical direction refers to the Vertical direction among Fig. 1 in principle, and it represents the vertical substantially direction of mounted assembling set, just the input direction of main vibrational loading.

More specifically, first assembling set 14 is the vertically extending block with pipe shape outer circumferential face.It is integrally formed so that radially outwards become the annular protuberance 24 of flange shape extension from outer circumferential face that this first assembling set 14 is included in its upper axial end portion.First assembling set 14 also is formed with along its extension of central axis and fixing with tapped hole 22 at its upper axial end face split shed.First assembling set 14 fixing is fixed on the Package power with the fixed-use bolt (not shown) in the tapped hole 22 by being screwed in this.

The global shape that second assembling set 16 has the hollow cylindrical of being roughly.This second assembling set 16 has flange portion 26 at place, its axial upper shed end, this flange portion with axially vertical direction on extend.At the axial upside of second assembling set 16, first assembling set 14 is provided with in coaxial mode, has axially spaced-apart simultaneously between the axial upper shed end of first assembling set 14 and second assembling set 16.First assembling set 14 and second assembling set 16 flexibly link together by the primary elastomeric elastomer 18 that is arranged in the axially spaced-apart between first and second assembling

sets

14,16.

As shown in Figure 2, primary elastomeric elastomer 18 has the global shape that is roughly frustum of a cone.First assembling set 14 is bonded on the primary elastomeric elastomer 18 by sulfuration, thereby this first assembling set 14 is from the end face axial ground insertion primary elastomeric elastomer 18 of minor diameter.Second assembling set 16 is bonded on the primary elastomeric elastomer 18 by sulfuration, thereby the axial upper shed end of this second assembling set 16 is stacked and be bonded on the outer circumferential face of large-diameter end of primary elastomeric elastomer 18.The outer periphery portion of primary elastomeric elastomer 18 extends to and joins on the flange portion 26 of second assembling set 16.That is, primary elastomeric elastomer 18 forms the integrated vulcanizing forming product that has first assembling set 14 and second assembling set 16.

Along with joining primary elastomeric elastomer body 18 to by sulfuration, the axial upper shed end of second assembling set 16 forms the integrated vulcanizing forming product that has first assembling set 14 and second assembling set 16.

Along with the axial upper shed end of second assembling set 16 joins to by sulfuration on the outer circumferential face of primary elastomeric elastomer 18, the axial upper shed end of this second assembling set 16 is thickly sealed by primary elastomeric elastomer 18 liquid.Primary elastomeric elastomer 18 has the whole major diameter recess 28 of alms bowl shape that is, the stress during with minimizing or the input of mitigation load is concentrated.

Engage on the inner peripheral surface of second assembling set 16 caulking gum layer 30 is arranged.Sealing rubber layer 30 is integrally formed with primary elastomeric elastomer 18, thereby the inner peripheral surface of second assembling set 16 is applied by primary elastomeric elastomer 18 and caulking gum layer 30 on whole surface area substantially.

The wall thickness of caulking gum layer 30 is around axial lower open end attenuation gradually on given axial length of second assembling set 16.Under this set, the internal surface of caulking gum layer 30 forms taper, and its diameter increases gradually towards the axial lower open end of second assembling set 16.In addition, the ring ladder part 32 of the outer peripheral edge portion of major diameter recess 28 and the caulking gum layer 30 axial intermediate portion by being formed on second assembling set 16 links to each other.Ring ladder part 32 is extended with given radial width on the whole circumference of second assembling set 16.

As shown in Figure 1, accommodate divider 34 and play the diaphragm 36 of flexible rubber membrane interaction as second assembling set 16 of an assembly of aforementioned integrated vulcanizing forming product, they insert with such order, promptly advance in this second assembling set 16 by the axial lower open end of this second assembling set 16 and by press fit.Divider 34 integral body are the heavy wall dish type, and are formed by rigid material such as metal or synthetic resin material.Divider 34 is formed with circumferential groove 37 in its outer peripheral edge portion, and this circumferential groove 37 is at the outer circumferential face split shed of divider and along the circumferential direction to be slightly less than the length extension of its circumference.

As shown in Figure 3, diaphragm 36 is formed by the thin rubber film, and the whole thin disk shape that has lax waveform that is.Thereby diaphragm 36 is easily deformable.On the outer circumferential face of diaphragm 36, engage the ring-shaped rubber layer retaining ring 38 that has as the rubber layer fixed block by sulfuration.Axially inserted under the situation of second assembling set 16 at divider 34 and rubber layer retaining ring 38, second assembling set 16 is subjected to such as the undergauge processing at comprehensive pull and stretch, and divider 34 and rubber layer retaining ring 38 closely are fitted in second assembling set 16 thus.More specifically, the diameter reducing rate in the pull and stretch operation is bigger at the lower axial end portion place of second assembling set 16 and the adjacent portions office that cooperates with rubber layer retaining ring 38, therefore the conical in shape that the formation diameter reduces gradually on axially downward direction.Under this set, the axial bottom of second assembling set 16 (being bottom seen in fig. 1) has the outer circumferential face of its diameter along with the inclination that reduces gradually to axial end portion side (being bottom seen in fig. 1) extension in the axial direction.In addition, the axial lower open end of second assembling set 16 of another axially open end-promptly-by the sealing of diaphragm 36 fluid-tight ground.

By this assembling, divider 34 and rubber layer retaining ring 38 overlap each other, and by ring ladder part 32 be formed at lower end on second open end of second assembling set 16 and fill out embedding part (caulking portion) 40 and be clipped in therebetween vertically, and location vertically.In addition, caulking gum layer 30 is being compressed on the whole mating face at them between the outer circumferential face of second assembling set 16 and divider 34 and rubber layer retaining ring 38, thereby the sealing of fluid-tight formula is provided.

Therefore, be formed with the compression chamber 42 that its wall section ground is made of primary elastomeric elastomer 18 at the axial upside of divider 34, and be formed with the balance cylinder 44 that its wall section ground is made of diaphragm 36 at the axial downside of divider 34.Compression chamber 42 and balance cylinder 44 seal from perimeter fluid-tight ground, and are filled with the incompressible fluid that is selected from water, aklylene glycol, PAG, silicone oil etc.

When inputted vibration between first assembling set 14 and second assembling set 16 is loaded, compression chamber 42 is owing to the resiliently deformable of primary elastomeric elastomer 18 generates pressure surge, and balance cylinder 44 bears the variation on the volume easily based on the resiliently deformable rapidly of diaphragm 36 simultaneously.For example, can effectively incompressible fluid be packed into compression chamber 42 and balance cylinder 44 to the pull and stretch operation of second assembling set 16 by assembling divider 34 and diaphragm 36 relatively with second assembling set 16 and in a large amount of incompressible fluids, carrying out.

The opening that is formed on the circumferential groove 37 in the outer circumferential face of divider 34 is applied by caulking gum layer 30 and is covered by second assembling set, 16 fluid-tight ground.The circumferential two ends of circumferential groove 37 are owed

shape intercommunicating pore

46,48 by cutting of running through that divider 34 forms respectively and keeps the fluid connection between compression chamber 42 and balance cylinders 44.Therefore, form with given length, compression chamber 42 and balance cylinder 44 are interconnected being used at the outer peripheral edge portion of divider 34 aperture path 50 along extending circumferentially.

For example, aperture path 50 is adjusted to the frequency of the vibration that can effectively stop motor etc., so that owing to the compression chamber 42 and the pressure difference between the balance cylinder 44 that generate when the inputted vibration produce the fluid stream that passes aperture path 50.As a result, the relative target inputted vibration of resonance that flows through the fluid of aperture path 50 produces effective damping effect.

Therefore, provide a kind of fluid-filled type vibration damping device body-be bearing body 12, wherein first assembling set 14 flexibly is connected by primary elastomeric elastomer 18 with second assembling set 16, and compression chamber 42 and balance cylinder 44 within it portion form.

As shown in fig. 1, the bearing body 12 that forms thus assembles regularly with the carriage 20 as holder.Carriage 20 is formed by the rigid material such as iron and aluminum alloy.Particularly as shown in Figure 4, carriage 20 comprises pipe shape pallet body 52 and is assemblied in Convenient table 53 on the pallet body 52 by welding or similar fashion one.

Pallet body 52 has the internal diameter that is equal to or slightly less than the external diameter of second assembling set 16 in the bearing body 12.Axial upper shed end at pallet body 52 forms the flange portion 54 that extends radially outward.On the other hand, the axial lower open end at pallet body 52 forms radially inwardly outstanding annular retaining part 56.To understand from Fig. 4, annular retaining part 56 is extruded at the part place of the axial lower open end of adjacency pallet body 52, thereby is formed on the inside bowed shape that remains unchanged on the whole circumference in axial cross section.In this embodiment, holder open end forms with the integrally formed axially open end (being axial lower open end shown in Figure 1) of annular retaining part 56 by one of pallet body 52.

In other words, Convenient table 53 is roughly cup-shaped, and its diameter increases to its axial top gradually from its axial intermediate portion.Middle body at the diapire of Convenient table 53 is installed with bolt hole 58.In addition, be formed with in the upper shed end of Convenient table 53 with cylindrical upwardly extending vertically fixedly eck part 60.The fixedly eck part 60 of Convenient table 53 is overlapping from the outer circumferential face of axial downside and pallet body 52, and is fixed on the pallet body 52 by welding or similar fashion.

That is, in the carriage 20 that is combined to form by pallet body 52 and Convenient table 53, except that the axial upper shed end of pallet body 52, the axial lower open end of pallet body 52 also 58 pairs of perimeters of bolt hole of the diapire by penetrating Convenient table 53 keeps open.Carriage 20 is fixed on the car body by the fixing bolt (not shown), and fixing bolt inserts the cutting of periphery formation of running through Convenient table 53 and owes portion's (not shown), and extends by the bolt hole 58 of Convenient table 53.

Should be pointed out that Convenient table 53 is used for pallet body 52 is fixed to car body.As long as can play this effect, Convenient table 53 can have various possible shapes, and is not limited to illustrated shape.For example, Convenient table 53 can be by forming with outwards outstanding shank on a plurality of outer circumferential faces that are fixed by welding in pallet body 52.

The assembling of bearing body 12 relative carriages 20 can advance the pallet body 52 to finish from axial upside press fit by second assembling set 16 with bearing body 12.

Before bearing body 12 and carriage 20 assemble, the diapire spare 62 as cover plate part is installed in carriage 20.As shown in Figure 5, diapire spare 62 is roughly dish type on the whole, and the core of this diapire spare 62 expands downwards, the whole thus dish of the shallow end that forms.Diapire spare 62 is made of the rigid material such as metal or synthetic resin material.

Form the supported part 64 that the cross section is curve or arc by outer peripheral edge portion along the direction bending that slightly makes progress with diapire spare 62.The external diameter of this supported part 64 is greater than the internal diameter of the annular retaining part 56 of pallet body 52 and be slightly less than the internal diameter of pallet body 52.Supported part 64 is inserted the pallet body 52 from the axial upper shed end of pallet body 52, and is supported with its outer peripheral edge portion that overlaps on the upper surface of annular retaining part 56.Under this assembling condition, diapire spare 62 installation in position extend the axial lower open end of sealing pallet body 52 simultaneously with the axial lower open end place at pallet body 52 along the axis normal direction.

As shown in Figure 6, the interior circumferential portion of supported part 64 is formed on the annular planar portion 66 of stretching on the diametric(al), extends on whole circumference with very little lateral length simultaneously.Diapire spare 62 also has the annular stepped portion 68 of the radially inner side that is positioned at annular planar portion 66, and is suitable for the inside radial location of interior circumferential portion in the annular retaining part 56 of pallet body 52.Because the existence of annular stepped portion 68, the middle body major part of diapire spare 62 be (downward among Fig. 1) outstanding lower axial end portion that surpasses the pallet body 52 that has annular retaining part 56 vertically outwards.

In addition, there is caulking gum 70 in the outer periphery portion at diapire spare 62 by the sulfuration joint.That is to say that caulking gum 70 forms the integrated vulcanizing forming product that is equipped with diapire spare 62.Caulking gum 70 is roughly annular on the whole, and from the outer periphery of diapire spare 62 to upper process.In the illustrated embodiment, caulking gum 70 has conical in shape on cross section, and wherein the heavy wall size of head portion at it is littler than the size of its bottom part.More specifically, the outer circumferential face 72 of caulking gum 70 is upwardly extending vertically cylinder surface, and this surface has the basic constant outer diameter identical with the external diameter of diapire spare 62.On the other hand, the inner peripheral surface 74 of caulking gum 70 is the inner peripheral surfaces with inclination of conical in shape, and the internal diameter of this face reduces downwards vertically gradually from the tip part of semicircular sectional shape.The lower end of the inner peripheral surface 74 of contiguous caulking gum 70 is formed with the circular bead surface 76 that radially extends internally with given transverse dimension.Under this set, in the annular planar portion 66 of the lower end of caulking gum 70-promptly at diapire spare 62-integrated vulcanizing forms the step shape part 78 that radially extends internally.

Preferably, the internal diameter of the caulking gum 70 that records from its top that becomes maximum is filled out the minimum outer diameter of embedding part 40 greater than lower end second assembling set 16 of bearing body 12.In addition, preferably, the internal diameter of the caulking gum 70 that records from its lower end (being step shape part 78) that becomes minimum is filled out the minimum diameter of embedding part 40 less than the lower end of second assembling set 16.In the present embodiment, between the tapering part of the inner peripheral surface of caulking gum 70 and circular bead surface 76, be provided with the border, fill out the identical diameter dimension of minimum diameter of embedding part 40 with the lower end of second assembling set 16 to have substantially.

After on the lower open end that diapire spare 62 is installed to pallet body 52, second assembling set 16 from the upper shed end of pallet body 52 with bearing body 12 is press fit into the pallet body 52, assembles bearing body 12 regularly with respect to carriage 20 thus.At bearing body 12 and carriage 20 like this under the situations of assembling, the outer peripheral edge portion of diapire spare 62 is held in the axial direction and is fixed between the lower axial end portion (embedding part 40 is filled out in the lower end) of the annular retaining part 56 of pallet body 52 and second assembling set 16.

In this state, the standing part of diapire spare 62 is arranged on 70 of caulking gums with compressed in the axial direction state between the lower axial end portion (embedding part 40 is filled out in the lower end) of the diapire spare 62 that is supported by carriage 20 and second assembling set 16.As shown in Figure 7, because the lower end of second assembling set 16 is filled out embedding part 40 and is formed the taper outer circumferential face, therefore caulking gum 70 also with axially vertical direction on fill out between embedding part 40 and the pallet body 52 in the lower end and to be compressed, the while fills out between embedding part 40 and the diapire spare 62 in the lower end in the axial direction and is compressed.Under this set, caulking gum 70 is filled gap-this diapire spare 62 between the parts that grip the position of the outer peripheral edge portion that is formed on diapire spare 62 and is clamped between the lower axial end portion (embedding part 40 is filled out in the lower end) of the annular retaining part 56 of pallet body 52 and second assembling set 16, thereby guarantees the fluid-tight formula sealing configuration of this position.

Under this assembling situation, between the diaphragm 36 and diapire spare 62 of bearing

body

12,44 opposite side forms confined air air chamber 80 in the balance cylinder, and diaphragm 36 is inserted between these two chambers.Because the existence of confined air air chamber 80, balance cylinder 44 based on diaphragm 36 towards the dilatancy of confined air air chamber 80 and allow Volume Changes, be accompanied by the dilatancy of diaphragm 36 towards confined air air chamber 80, the pneumatic spring that is produced by confined air air chamber 80 acts on this diaphragm 36.That is,, for example, just can regulate or adjust the spring performance of diaphragm 36 by suitably regulating the ratio of static elasticity and dynamic elasticity by the pneumatic spring of regulating action on diaphragm 36 suitably.

Next, an example of the manufacture method of motor car engine bearing 10 of the present invention is described.It is illustrated this to should be pointed out that manufacture method is not limited to.

Prepare bearing body 12, carriage 20 at first, respectively and be equipped with the integrated vulcanizing forming product of the caulking gum 70 of diapire spare 62.The integrated vulcanizing forming product of primary elastomeric elastomer 18 that more specifically, can be by will being furnished with first and second assembling sets 14,16 in a large amount of incompressible fluids and divider 34 and diaphragm 36 are assembled together and obtain bearing body 12.Carriage 20 has been carried out being used for the suitable pretreatment of coating process or treatment fluid.

Subsequently, in atmosphere, in axial direction the annular planar portion 66 of supported part 64 and diapire spare 62 is overlapped on the annular retaining part 56 of pallet body 52 in a side relative with caulking gum 70, and the middle body and the annular stepped portion 68 of diapire spare 62 be positioned radially inwardly locating of annular retaining part 56, so that the middle body of diapire spare 62 is outstanding from lower open end on axially outside direction (Fig. 1 downward direction) at annular retaining part 56 places of pallet body 52.Under above-mentioned state, diapire spare 62 is in place by carriage 20 supportings.

Then, bearing body 12 press fit is in axial direction advanced this pallet body 52, overlap the flange portion 54 of pallet bodies 52 until the flange portion 26 of second assembling set 16 from the axial upper shed end of pallet body 52.

In this state, the outer circumferential face that the inclination of embedding part 40 is filled out in the inner peripheral surface 74 and the lower end of the inclination of caulking gum 70 keeps tight the contact each other, and simultaneously the lower end head portion (face) of filling out embedding part 40 presses the circular bead surface 76 of caulking gum 70.Thereby caulking gum 70 is filled out between the supported part 64 of embedding part 40 and diapire spare 62 and the annular planar portion 66 in the lower end and is carried out compressive strain in the axial direction.Based on caulking gum 70 compressive strain in the axial direction, sealing rubber 70 carries out dilatancy in the axial direction, and the outer circumferential face 72 of caulking gum 70 keeps closely contacting with the inner peripheral surface of pallet body 52 thus.

Promptly, by carriage 20 is advanced in bearing body 12 press fits, the outer peripheral edge portion of diapire spare 62 is forced to clamping and is fixed between the annular retaining part 56 of second assembling set 16 and carriage 20, is formed on the gap sealed rubber 70 fluid-tight ground sealing between second assembling set 16, carriage 20 and the diapire spare 62 simultaneously.Therefore, be formed on the opposite side of balance cylinder 44 by the confined air air chamber 80 of diapire spare 62 sealings, and be inserted with diaphragm 36 between the two.

In the structure of above-mentioned motor car engine bearing 10, form bearing body 12 by incompressible fluid being enclosed in compression chamber 42 and the balance cylinder 44 in advance, bearing body 12 that in atmosphere, will so prepare then and carriage 20 assemblings.At this moment, can form confined air air chamber 80.This set makes it possible to easily fill incompressible fluid in compression chamber 42 and balance cylinder 44, prevents that fully incompressible fluid from entering confined air air chamber 80 simultaneously.Thereby, can easily make the engine bearer 10 of expectation.

According to the engine bearer 10 of the embodiment of the invention, the axial lower open end of tubular brackets body 52 is sealed by diapire spare 62 fluid-tight ground, thereby has eliminated the requirement of the bottom of pallet body 52 being made enclosed construction.This prevents coating used in the pretreatment of residual this carriage 20 in the bottom of carriage 20 or treatment fluid, thereby can carry out the processing such as application of carriage 20 with fabulous work efficiency.

In the present embodiment, because caulking gum 70 is bonded on the diapire spare 62 by sulfuration, therefore avoid the trouble of the more element for the treatment of number.In addition, can caulking gum 70 be arranged on the position of expectation with high positional accuracy, thereby realize the high sealability and the fluid sealability of confined air air chamber 80 with high reliability.

Below with reference to Fig. 8, it illustrates a kind of manufacture method according to the motor car engine seat structure of second embodiment of the invention.In the following description, be used for representing element with spline structure and corresponding function with the used identical label of first embodiment, and these elements of repeat specification no longer.

More specifically, in the present embodiment, the cylindrical wall portion of pallet body 52 is formed with the exhaust port 86 that penetrates.Exhaust port 86 is not particularly limited, according to needed air displacement or make efficient it can have multiple shape, size, quantity, position etc.For example in the present embodiment, overlap at the outer peripheral portion of diapire spare 62 under the state on the annular retaining part 56 of pallet body 52 be positioned at vertically position on the caulking gum 70-promptly caulking gum 70 with it closely an open end of the pallet body 52 of contact be at least one exhaust port 86 of minor diameter circular hole in the position (in other words, the upper end of second assembling set 16 on the press fit direction) of the axial centre side form of being provided with.

Deposit at this cloth, when pallet body 52 was advanced in bearing body 12 press fits, the unnecessary air that is present between the bearing body 12 in diapire spare 62 and the pallet body 52 can be discharged by exhaust port 86.Because exhaust port 86 is positioned at sealed rubber 70 above the zone that seals on the axial direction of pallet body 52, the formation of exhaust port 86 can not have a negative impact to the fluid sealability of confined air air chamber 80.

The setting of this exhaust port 86 can avoid the unnecessary pressure in the confined air air chamber 80 to increase.Therefore, can stably carry out pneumatic spring effect, thereby can make the spring performance of confined air air chamber 80 stable based on air pressure in the confined air air chamber 80.

Should be noted that and also can set up according to the structure of motor car engine bearing 10 of the present invention and do not establish above-mentioned exhaust port 86.For example, can adopt the caulking gum 70 of special construction that the interior pressure in the confined air air chamber 80 is set the level higher than atmosphere, the caulking gum 70 of this special construction can prevent that as much as possible unnecessary air from spilling when erection support body 12 on pallet body 52.For example, the confined air air chamber 80 of this positive pressure type can be regulated the static elasticity in the engine bearer 10 and the ratio of dynamic elasticity effectively.

On the contrary, replace exhaust port 86 or except that exhaust port 86, the initial configuration of caulking gum 70 can be formed and between the inner peripheral surface of caulking gum 70 and pallet body 52, to form the gap.This gap remains to caulking gum 70 always and enters press contacts, thereby allows to spill the gap of air between pallet body 52 and diapire spare 62.This set can obtain the advantage identical with exhaust port 86.

Below with reference to Fig. 9, its form that illustrates according to third embodiment of the invention is the fluid-filled type vibration damping device of motor car engine bearing 90.This motor car engine bearing 90 has unique feature aspect the sealing configuration of confined air air chamber 80.

More specifically, on the bottom faces that is limited by supported part 64 and annular planar portion 66, engaging by sulfuration in a side relative with caulking gum 70 has second caulking gum 92.As illustrating enlargedly among Figure 10, second caulking gum 92 is the dish types that extend to the general flat of annular planar portion 66 with substantially invariable wall thickness from supported part 64.Fill out in the lower end that the outer peripheral portion of diapire spare 62 is forced to be clamped in regularly second assembling set 16 under the situation between the annular retaining part 56 of embedding part 40 and pallet body 52, second caulking gum 92 with the state of compression vertically between outer peripheral edge portion that is arranged on the diapire spare 62 that comprises supported part 64 and annular planar portion 66 on the whole circumference and annular retaining part 56.

In addition, the outer periphery that the outer peripheral edge portion of caulking gum 70 is crossed over diapire spare 62 extend to second caulking gum 92, thereby the caulking gum 70 and second caulking gum 92 are integrally formed.Therefore, the caulking gum 70 and second caulking gum 92 form the integrated vulcanizing forming product 93 that has diapire spare 62.The outer circumferential face of second caulking gum 92 joins the outer circumferential face 72 of caulking gum 70 smoothly to.Thereby the external diameter of integrated vulcanizing forming product 93 is identical with the external diameter of caulking gum 70 (or second caulking gum 92).In addition, the inner periphery of second caulking gum 92 roughly is positioned at the central part of the annular planar portion 66 of diapire spare 62 on horizontal direction (being the horizontal direction of Fig. 9 and 10).For understanding the present invention simply, the surface of second Sealing 92 is depicted as the plane in the drawings.Yet because second Sealing 92 is made of rubber elastic material, so its reality comprises very little projection or pit from the teeth outwards.

In the present embodiment, the supported part 64 of diapire spare 62 has axial upwardly extending upper end portion, makes the outermost peripheral part of diapire spare 62 be ring.In addition, as among first embodiment, the bottom faces of the upper surface of the annular retaining part 56 of pallet body 52 and the annular planar portion 66 of diapire spare 62 all forms the plane, and is upward extending with given width on the whole circumference at them with axially vertical direction (horizontal direction among Fig. 9 and 10).In the present embodiment, especially, the width dimensions of annular retaining part 56 is greater than the size among first embodiment, and is big among annular planar 66 to the first embodiments of portion simultaneously.

From Figure 11 and 12, will understand, compare with the caulking gum 70 among first embodiment shown in Figure 6, sealing rubber 70 comprises integrally formed circular protrusion 96, and this circular protrusion is inwardly radially outstanding so that the inner peripheral surface 74 of caulking gum 70 is inwardly outstanding with the setting value overall radial.This mode can obtain the rubber mass of enough caulking gums 70 effectively, strengthens the fluid-tight formula sealability of caulking gum 70 thus.In addition, but overlap joint or extruding force on the embedding part 40 are filled out in the lower end that the existence concentrated area of circular protrusion 96 utilizes caulking gum 70 to act on second assembling set 16, further guarantee stably to strengthen the sealability of caulking gum 70 thus.In addition, in inner peripheral surface 74, form radially annular recess 94 to inner opening.This annular recess 94 is positioned at the bottom side of caulking gum 70, so that radially be positioned the inboard of outermost periphery of the outside of diapire spare 62 with given radial distance.Annular recess 94 extends on whole circumference to be roughly radially to the constant cross-section shape of the arc of inner opening.

Under the state before the integrated vulcanizing forming product 93 that constitutes by diapire spare 62, the caulking gum 70 and second caulking gum 92 are assemblied on the motor car engine bearing 90, shown in Figure 11 and 12, the outer circumferential face 72 of caulking gum 70 has the external diameter than the little certain value of internal diameter of pallet body 52.

Be stacked in the axial direction at second caulking gum 92 of integrated vulcanizing forming product 93 and carriage 20 coaxial settings and this integrated vulcanizing forming product 93 under the situation on the annular retaining part 56 of pallet body 52, the outer circumferential face 72 of caulking gum 70 and the inner peripheral surface of pallet body 52 with the gap 98 of given width " d " with axial Vertical direction or insert wherein facing one another in the radial direction of (Figure 11 and 12 horizontal direction).In the present embodiment, the outer circumferential face 72 of caulking gum 70 and the inner peripheral surface of pallet body 52 are all cylindrical, thereby the width dimensions in gap 98 " d " is all constant on its whole circumference.Because the external diameter of integrated vulcanizing forming product 93 equals the external diameter of the annular retaining part 56 of pallet body 52 substantially, therefore be easier to make integrated vulcanizing forming product 93 and carriage 20 centering.

For making the motor car engine bearing 90 of this structure, as first embodiment for example, prepare bearing body 12, carriage 20 in advance, have integrated vulcanizing forming product 93, caulking gum 70 and second caulking gum 92 of diapire spare 62.

Subsequently, second Sealing 92 that will join in integrated vulcanizing forming product 93 on the bottom surface of outer peripheral edge portion of diapire spare 62 overlaps on the annular retaining part 56 of pallet body 52, simultaneously the middle body and 68 press fits of annular stepped portion of diapire spare 62 is advanced in the annular retaining part 56.In this state, the middle body of diapire spare 62 from the open end (low side Fig. 9) of the pallet body 52 that is provided with annular retaining part 56 vertically outwards (among Fig. 9 downward direction) outstanding, thereby against carriage 20 location integrated vulcanizing forming products 93.As mentioned above, under second Sealing 92 overlaps situation on the annular retaining part 56, between the inner peripheral surface of the outer circumferential face 72 of caulking gum 70 and pallet body 52, on whole circumference, form gap 98.

Then, in axial direction bearing body 12 is advanced in this pallet body 52 from another opening end (upper axial end Fig. 9) press fit of pallet body 52.

During this press-fit operation, owing between the inner peripheral surface of the outer circumferential face 72 of caulking gum 70 and pallet body 52, form gap 98, therefore can discharge the unnecessary air that remains in the space that is defined between second assembling set 16 and the pallet body 52 by this gap 98.In this respect, because the air pressure of unnecessary air during press-fit operation, the existence of annular recess 94 of bottom part opening at it in the inner peripheral surface 74 of caulking gum 70 can cause that the upper end portion of caulking gum 70 radially slopes inwardly.That is, the cross sectional area of caulking gum 70 is in the local minimizing of the part that forms annular recess 94.Under this set, when air pressure acted on the caulking gum 70, the upper end portion of caulking gum 70 was easy to based on annular recess 94 and radially to internal strain, thereby the opening in gap 98 is provided effectively.Therefore, air radially is directed in the gap 98 to the opening of the amplification that internal strain produces by the upper end portion because of caulking gum 70 easily.

In addition, for integrated vulcanizing forming product 93 being held in place against carriage 20, only second caulking gum 92 is overlapped on the annular retaining part 56 of pallet body 52, between the faying surface of the annular retaining part 56 of second caulking gum 92 and metal, form small gap.

Therefore, remain in the gap 98 unnecessary air can by be formed between second caulking gum 92 and the annular retaining part 56 the gap and by at the opening of the pallet body 52 of annular retaining part 56 1 sides with run through the bolt hole 58 that Convenient table 53 forms and be discharged into the outside.

By the flange portion 26 against flange portion 54 overlapping second assembling sets 16 of pallet body 52, the inner peripheral surface 74 of the inclination of caulking gum 70 in axial direction closely contacts mutually with the outer circumferential face that the inclination of embedding part 40 is filled out in the lower end of second assembling set 16.In addition, the end portion (face) that embedding part 40 is filled out in the lower end is forced to be pressed against the bottom of the caulking gum 70 that wherein forms annular recess 94, and caulking gum 70 is filled out between embedding part 40 and supported part 64 and the annular planar portion 66 in the lower end and occurred compressive strain in the axial direction thus.

According to the axial crushing deformation of caulking gum 70, caulking gum 70 with axially vertical direction on carry out the expanded in diameter distortion, the tubulose outer circumferential face 72 of caulking gum 70 closely contacts with the inner peripheral surface maintenance of pallet body 52 thus.In the present embodiment, because circular protrusion 96 is integrally formed in the radially inner side and the end portion of caulking gum 70, inner peripheral surface 74 major parts of caulking gum 70 are radially inwardly outstanding.This guarantees enough amounts of caulking gum 70, thereby guarantee to strengthen the sealing between the inner peripheral surface 74 of caulking gum 70 and the outer circumferential face that embedding part 40 is filled out in the lower end.Because bottom part one side at caulking gum 70 is provided with circular protrusion 96, therefore can prevent that the stress on the bottom part of sealing rubber 70 is concentrated between the expanded in diameter deformation phases of caulking gum 70, thereby stably guarantee the enough serviceabilities of caulking gum 70 and the elasticity of expection.

In addition, because second assembling set 16 is forced to press fit and advances carriage 20, the annular planar portion 66 of diapire spare 62 in axial direction shifts to the annular retaining part 56 of pallet body 52.As a result, second caulking gum 92 by axial compression and be arranged on annular planar portion 66 and annular retaining part 56 between, eliminate the slight gap be formed between second caulking gum 92 and annular retaining part 56 faying surfaces thus.

Advance under the situation of carriage 20 in bearing body 12 press fits, the outer peripheral edge portion of diapire spare 62 is forced to be clamped in regularly between the annular retaining part 56 of second assembling set 16 and carriage 20, is formed on sealed rubber 70 in gap and the sealing of second caulking gum, 92 fluid-tight ground between second assembling set 16, carriage 20 and the diapire spare 62.Therefore, form the confined air air chamber 80 that is covered by diapire spare 62 in a side relative with balance cylinder 44, wherein diaphragm 36 is inserted between this balance cylinder 44 and this confined air air chamber 80.

In structure according to the motor car engine bearing 90 of present embodiment, before carriage 20 is advanced in bearing body 12 press fits, between the inner peripheral surface of the outer circumferential face of integrated vulcanizing forming product 93 and pallet body 52, form gap 98 with caulking gum 70 and diapire spare 62.Thereby the unnecessary air that generates during bearing body 12 is press fit into carriage 20 can discharge by gap 98.

Therefore, needn't in pallet body 52, form exhaust port 86 in this embodiment, thereby eliminate the risk of the intensity of the infringement pallet body 52 that causes because of the distortion that runs through exhaust port 86 wherein, also help in addition and make processing.

In the present embodiment, second caulking gum 92 is located on the bottom surface of outer peripheral edge portion of diapire spare 62, and this second caulking gum 92 is arranged between the annular retaining part 56 of the outer peripheral edge portion of diapire spare 62 and pallet body 52 in the axial direction and is compressed.This set can seal by the fluid-tight formula that press fit further strengthens in the confined air air chamber 80, allows air to spill by the gap between the overlapping surface of second caulking gum 92 and annular retaining part 56 when being press fit into bearing body 12 on the carriage 20 simultaneously.In addition, second caulking gum 92 is integrally formed with caulking gum 70.Therefore, even the external diameter of caulking gum 70 is less than the internal diameter of pallet body 52, also can obtain effectively will be between second assembling set 16, carriage 20 and diapire spare 62 volume of compressed rubber, thereby stably guarantee the expection fluid-tight formula sealing of confined air air chamber 80.

Although only describing the present invention in detail in the currently preferred embodiment as example, should be appreciated that the present invention and be limited to the details of illustrated embodiment, but can otherwise implement.

For example, the structure of the carriage 20 that holder is not limited to illustrate in the aforementioned embodiment, but can be implemented as alternate manner.Can in the incompressible fluid sealing area, adopt various structures.More specifically, can be in the dividers 34 that compression chamber 42 and balance cylinder 44 separated mutually be provided with various structures one or two or a plurality of on length and cross section different aperture paths.Except that these aperture paths, can adopt known mobile plate or film to be absorbed in the small pressure difference between compression chamber and the balance cylinder.

Though adopted confined air air chamber 80 in the illustrated embodiment, also can make diapire spare 62 be formed with the through hole that is used to connect outer duct.Like this, can be by the air pressure in peripheral operation adjusting or the control air chamber.

In the 3rd embodiment, annular recess 94 forms at inner peripheral surface 74 split sheds of bottom end side at caulking gum 70, and annular projection 96 forms to be positioned to be used for folding and leans on the lower end of second assembling set 16 to fill out on the annular recess 94 of embedding part 40.That is, annular projection 96 forms by the inner peripheral surface 74 that integral body radially inwardly is projected into caulking gum 70.Perhaps, can on the inner peripheral surface 74 of caulking gum 70, form annular seating portion to be projected into the outside.Figure 13 illustrates an example of annular seating portion, wherein forms annular projection 100 on the inner peripheral surface 74 of bottom end side at caulking gum 70, so that outwards outstanding and along extending circumferentially with substantially invariable semi-circular section shape on whole circumference.Under this set, when caulking gum 70 is filled out in the lower end when being compressed between embedding part 40, diapire spare 62 and the pallet body 52, annular projection 100 is filled out compressive strain between embedding part 40 and diapire spare 62 and the pallet body 52 in the lower end, further strengthens the fluid-tight formula sealing of confined air air chamber 80 thus.

It is also understood that under the situation that does not break away from the spirit and scope of the present invention the present invention can have the embodiment of the thinkable multiple change of those skilled in the art, changes and improvements.

Claims

1. a fluid-filled type vibration damping device (10,90) comprising:

First assembling set (14);

Second assembling set (16) of tubulose, this second assembling set are arranged so that first assembling set (14) is positioned at the first open end side of this second assembling set (16);

Flexibly connect first assembling set (14) and second assembling set (16) and with the primary elastomeric elastomer (18) of the first open end fluid-tight of this second assembling set (16) ground sealing;

Flexible rubber film (36) with the sealing of the second open end fluid-tight of this second assembling set (16) ground;

Divider (34), this divider are arranged between the opposed faces of primary elastomeric elastomer (18) and flexible rubber film (36) and by second assembling set (16) and support;

Be formed on a side of divider (34) and wherein be sealed with the compression chamber (42) of incompressible fluid, this compression chamber (42) is partly limited and can be born the vibration input by primary elastomeric elastomer (18);

Be formed on the opposite side of divider (34) and wherein be sealed with the balance cylinder (44) of incompressible fluid, this balance cylinder (44) partly limit and allow to have variable volume by flexible rubber film (36);

Connect compression chamber (42) and balance cylinder (44) and aperture path (50) by utilizing divider (34) to form;

Tubulose holder (20), second assembling set (16) press fit is advanced in this holder so that this second assembling set (16) is suitable for being installed on the target part that needs vibration damping by this holder (20), and this holder (20) comprises that being integrally formed in an one open end sentences just radially inwardly outstanding annular retaining part (56);

The mode that diapire spare (62), this diapire spare have the external diameter littler than the internal diameter of holder (20), be held annular retaining part (56) supporting of part (20) with its outer peripheral edge portion is arranged in this holder (20) and quilt clamping regularly between second open end of second assembling set (16) and this annular retaining part (56);

Wherein second open end of second assembling set (16) has the taper outer circumferential face that diameter reduces gradually towards the top, and

Be provided with caulking gum (70) and be formed on second open end of second assembling set (16) and the gap between diapire spare (62) and the holder (20) to be used for the sealing of fluid-tight ground, thereby form the confined air air chamber (80) that is partly limited by diapire spare (62) in a side relative with balance cylinder (44), wherein this flexible rubber film (36) is clipped between this balance cylinder (44) and this confined air air chamber (80).

2. fluid-filled type vibration damping device according to claim 1 (10,90) is characterized in that, sealing rubber (70) joins diapire spare (62) to by sulfuration outer peripheral edge portion is outstanding vertically with the inboard towards holder (20).

3. fluid-filled type vibration damping device (10 according to claim 2,90), it is characterized in that, caulking gum (70) has the taper inner peripheral surface (74) that the tubulose outer circumferential face (72) that extends vertically from the outer peripheral edge portion of diapire spare (62) and its diameter reduce to its bottom diameter gradually from its top, sealing rubber (70) be arranged in the gap between second open end that is formed at second assembling set (16) and diapire spare (62) and the holder (20) and axial direction with axially vertical direction on be compressed.

4. according to each described fluid-filled type vibration damping device (10 in the claim 1 to 3,90), it is characterized in that, first open end of second assembling set (16) joins on the outer circumferential face of primary elastomeric elastomer (18) by sulfuration, engaging by sulfuration at the outer periphery place of flexible rubber film (36) has rubber layer retaining ring (38), and second open end of second assembling set (16) is arranged on rubber layer retaining ring (38) and goes up and stand the undergauge operation so that this rubber layer retaining ring (38) is fixed on this second assembling set (16) simultaneously.

5. according to each described fluid-filled type vibration damping device (10 in the claim 1 to 3,90), it is characterized in that holder (20) comprises the exhaust port (86) that penetrates its wall, this exhaust port is in the position in the press fit direction the place ahead that is arranged in second assembling set (16).

6. according to each described fluid-filled type vibration damping device (10 in the claim 1 to 3,90), it is characterized in that, sealing rubber (70) is bonded on diapire spare (62) by sulfuration outer peripheral edge portion is outstanding vertically with the inboard towards holder (20), sealing rubber (70) has the external diameter under the preceding original state of assembling, this external diameter is littler than the internal diameter of holder (20), when second assembling set (16) is advanced holder (20) by press fit after, second open end that caulking gum (70) advances second assembling set (16) in the holder (20) by press fit carries out the expanded in diameter distortion, thereby caulking gum (70) keeps closely contacting with the inner peripheral surface of holder (20) so that provide the sealing of fluid-tight formula to second open end and the gap between diapire spare (62) and the holder (20) that is formed on second assembling set (16).

7. according to each described fluid-filled type vibration damping device (90) in the claim 1 to 3, it is characterized in that, this device also comprises second caulking gum (92) on the bottom surface of the outer peripheral edge portion that is formed on diapire spare (62), and this second caulking gum (92) is arranged between the annular retaining part (56) of the outer peripheral edge portion of diapire spare (62) and holder (20) and is compressed vertically on whole circumference.

8. fluid-filled type vibration damping device according to claim 7 (90), it is characterized in that the bottom surface of the outer peripheral edge portion of this diapire spare (62) and this compress the tabular surface of surface for extending with given width along direction perpendicular to axial direction of annular retaining part (56) of the holder (20) of second caulking gum (92) on whole circumference.

9. according to each described fluid-filled type vibration damping device (10 in claim 1 to 3 and 8,90), it is characterized in that, caulking gum (70) be included in the circular protrusion (96,100) that extends on the whole circumference with the contacted inner peripheral surface of second open end second assembling set (16).

10. according to each described fluid-filled type vibration damping device (10 in claim 1 to 3 and 8,90), it is characterized in that the middle body of diapire spare (62) is outwards outstanding vertically from the open end at described annular retaining part (56) place of holder (20).

11. a manufacturing is according to the method for each described fluid-filled type vibration damping device (10,90) in claim 1 to 3 and 8, this method comprises the steps:

Prepare the fluid-filled type vibration damping device body (12) that is formed with compression chamber (42) and balance cylinder (44) in it dividually with holder (20) and diapire spare (62), wherein first and second assembling sets (14,16) connect by primary elastomeric elastomer (18);

With holder (20) diapire spare (62) is set relatively, wherein the outer peripheral edge portion of this diapire spare (62) the annular retaining part (56) that overlaps holder (20) goes up and partly supports in place by this annular retaining;

Second assembling set (16) press fit of fluid-filled type vibration damping device body (12) is advanced in the holder (20), so that the outer peripheral edge portion of diapire spare (62) is clamped between the annular retaining part (56) of this second assembling set (16) and this holder (20) regularly, be formed on the sealed rubber in gap (70) the fluid-tight ground sealing between second assembling set (16) and holder (20) and the diapire spare (62) simultaneously.

12. the method for a manufacturing fluid-filled type vibration damping device according to claim 11 (10,90) is characterized in that this method also comprises the steps:

Preparation integrated vulcanizing forming product (93), wherein caulking gum (70) is bonded on by sulfuration on the outer peripheral edge portion of diapire spare (62) so that outstanding vertically from the diapire spare (62) that has the cylindricality outer circumferential face;

With respect to holder (20) this integrated vulcanizing forming product (93) is set, the bottom surface of the outer peripheral edge portion of wherein relative with a side of being given prominence to from caulking gum (70) this diapire spare (62) is overlapping and be positioned on the annular retaining part (56) of this holder (20);

Second assembling set (16) press fit of fluid-filled type vibration damping device body (12) is advanced in the holder (20), thus outer circumferential face and the gap inner peripheral surface of holder (20) between and from an open end of holder be discharged into outside of the air in the space between second assembling set (16) and holder (20) by being formed on integrated vulcanizing forming product (93); And

Second open end that advances second assembling set (16) of holder (20) by press fit makes caulking gum (70) produce the expanded in diameter distortion, thereby sealing rubber keeps closely contacting so that the sealing of fluid-tight ground is formed on second open end of second assembling set (16) and the gap between diapire spare (62) and the holder (20) with the inner peripheral surface of this holder (20).