WO2010038746A1 - 防振ゴム部材およびその製造方法 - Google Patents
防振ゴム部材およびその製造方法 Download PDFInfo
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- WO2010038746A1 WO2010038746A1 PCT/JP2009/066965 JP2009066965W WO2010038746A1 WO 2010038746 A1 WO2010038746 A1 WO 2010038746A1 JP 2009066965 W JP2009066965 W JP 2009066965W WO 2010038746 A1 WO2010038746 A1 WO 2010038746A1
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- rubber
- coating
- elastic body
- vibration
- rubber elastic
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/02—Attaching arms to sprung part of vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
- B60G21/0551—Mounting means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/14—Independent suspensions with lateral arms
- B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/40—Indexing codes relating to the wheels in the suspensions
- B60G2200/44—Indexing codes relating to the wheels in the suspensions steerable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/13—Torsion spring
- B60G2202/135—Stabiliser bar and/or tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/122—Mounting of torsion springs
- B60G2204/1222—Middle mounts of stabiliser on vehicle body or chassis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/14—Mounting of suspension arms
- B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
- B60G2204/4104—Bushings having modified rigidity in particular directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/43—Fittings, brackets or knuckles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/71—Light weight materials
- B60G2206/7104—Thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/73—Rubber; Elastomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/28—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen sulfur-containing groups
Definitions
- the present invention relates to a vibration-proof rubber member that is in sliding contact with a counterpart member that vibrates relative to itself and a method for manufacturing the same.
- a stabilizer bush may be mentioned.
- the stabilizer bush is fixed to the vehicle body via a bracket.
- a stabilizer bar is disposed in the holding hole of the stabilizer bush.
- the stabilizer bar when the vehicle is turning, the outer ring side of the suspension sinks and the inner ring side extends due to centrifugal force. For this reason, the stabilizer bar is twisted. Using the elastic restoring force against the torsion, the stabilizer bar tries to lift the outer ring side of the suspension. In this way, the stabilizer bar keeps the vehicle horizontal.
- a liner made of PTFE (polytetrafluoroethylene) having a small friction coefficient has been inserted into the holding hole. And the inner peripheral surface of the liner and the outer peripheral surface of the stabilizer bar were brought into sliding contact.
- PTFE liners are relatively expensive. For this reason, when a PTFE liner is employed, the manufacturing cost of the stabilizer bush increases.
- Patent Literature 1 discloses a stabilizer bush having a rubber elastic body made of self-lubricating rubber.
- the rubber elastic body has a holding hole.
- a stabilizer bar is disposed in the holding hole. According to the stabilizer bush described in this document, the frictional resistance between the stabilizer bush and the stabilizer bar is reduced by causing the fatty acid amide, which is a component of the self-lubricating rubber, to ooze out from the inner peripheral surface of the holding hole.
- Patent Document 2 discloses a stabilizer bush including a rubber elastic body made of self-lubricating rubber and a lubricant.
- the rubber elastic body has a holding hole.
- a stabilizer bar is disposed in the holding hole.
- a grid-like rib is formed on the inner peripheral surface of the holding hole.
- the lubricant is held in a recess formed between the lattice-like ribs. Since the concave portion functions as a lubricant reservoir, the retention of the lubricant is enhanced.
- the lubricant can be continuously supplied smoothly between the stabilizer bush and the stabilizer bar. For this reason, the frictional resistance between the stabilizer bush and the stabilizer bar can be further reduced.
- paragraph [0026] of Patent Document 2 discloses a dry coat film containing particles having lubricity such as molybdenum particles as an example of a lubricant.
- Patent Document 2 does not specifically disclose a method for arranging the dry coat film on the inner peripheral surface of the holding hole.
- an object of the present invention is to provide an anti-vibration rubber member that has a low frictional resistance with the counterpart member and is difficult to peel off from a rubber elastic body, and a relatively simple manufacturing method thereof.
- the vibration-insulating rubber member of the present invention includes a sliding surface that absorbs at least a part of the vibration of the counterpart member and relatively slides against the counterpart member.
- a rubber elastic body made of self-lubricating rubber which is an anti-vibration rubber member and contains an elastomer and a bleed lubricant, and a slide disposed inside the sliding surface of the surface of the rubber elastic body Covers at least part of the inner surface and contains a resin having one or more functional groups selected from mercapto groups, vinyl groups, epoxy groups, methacryloxy groups, and amino groups, and deforms following the deformation of the rubber elastic body
- the sliding surface is formed by covering at least a part of the surface of the coating and the surface of the coating, and the bleeding lubricant of the rubber elastic body permeates the coating and oozes out to the surface of the coating.
- it comprises a lubricating film, the (corresponding to claim 1).
- the anti-vibration rubber member of the present invention includes a rubber elastic body, a coating film, and a lubricating film.
- the lubricating film is in sliding contact with the mating member. Further, if there is a portion where the lubricating film is insufficient on the sliding surface, a coating containing a bleed lubricant is exposed from the portion and is in sliding contact with the mating member.
- the vibration-insulating rubber member of the present invention the lubricating film is predominantly slidably contacted with the counterpart member preliminarily. Further, the rubber elastic body does not slide on the mating member. For this reason, the frictional resistance with the counterpart member is small.
- one or more functional groups selected from mercapto groups, vinyl groups, epoxy groups, methacryloxy groups, and amino groups are introduced into the resin that forms the film.
- Each of these functional groups is highly reactive with the elastomer. More specifically, the mercapto group is particularly for U (urethane rubber), BR (butadiene rubber), IR (isoprene rubber), EPDM (ethylene propylene rubber), SBR (styrene butadiene rubber), NBR (nitrile rubber), Vinyl groups are reactive with EPDM, epoxy groups are particularly reactive with U, IIR, NBR and SBR, methacryloxy groups are particularly reactive with EPDM, and amino groups are reactive with NBR, IIR and U. high.
- the rubber elastic body and the coating can be firmly bonded (chemically bonded). Therefore, the coating is difficult to peel from the rubber elastic body. Further, the coating tends to deform following the deformation of the rubber elastic body.
- the sliding inner surface should have a substantially smooth surface shape.
- the lubricant is held by the concave portions formed between the grid-like ribs.
- the bleed lubricant can be held by the permeable film.
- the recessed part essential to the stabilizer bush of patent document 2 is not essential in the case of the vibration-insulating rubber member of the present invention (however, even if there is a recessed part, it is included in the configuration of (1) above).
- the sliding inner surface of the present configuration has a substantially smooth surface shape (a surface shape without an artificial uneven shape, including a curved surface shape as well as a flat surface shape). For this reason, it is not necessary to form a recess in the sliding inner surface.
- the tops of the grid-like ribs come into sliding contact (line contact) with the stabilizer bar.
- the surface pressure applied from the stabilizer bar to the top of the rib is relatively high. For this reason, the top of the rib is easily worn. Therefore, the durability of the rubber elastic body is low.
- the sliding inner surface of this configuration is not provided with an uneven shape. For this reason, the sliding inner surface comes into surface contact with the mating member almost entirely through the coating film and the lubricating film (in some cases, only the coating film). Therefore, the durability of the rubber elastic body is high.
- the coating film should further contain a solid lubricant (corresponding to claim 2).
- a solid lubricant corresponding to claim 2.
- the solid lubricant is preferably made of polytetrafluoroethylene (corresponding to claim 3).
- Polytetrafluoroethylene has a particularly low friction coefficient among solid lubricants. For this reason, according to this structure, the frictional resistance of the coating film itself with respect to the counterpart member is further reduced.
- the coating film should contain 200 parts by mass or less of the solid lubricant with respect to 100 parts by mass of the resin.
- the reason why the content of the solid lubricant is set to 200 parts by mass or less is that when it exceeds 200 parts by mass, the coating tends to be worn. That is, the durability of the coating is lowered.
- the coating film should contain 160 parts by mass or less of the solid lubricant. If it carries out like this, the frictional resistance of the film with respect to the other party member can be made small, ensuring the durability of a film.
- the coating film should contain 110 parts by mass or more and 130 parts by mass or less of the solid lubricant.
- the reason why the content of the solid lubricant is set to 110 parts by mass or more is that when it is less than 110 parts by mass, the frictional resistance of the coating against the mating member increases.
- the reason why the content of the solid lubricant is 130 parts by mass or less is that when the amount exceeds 130 parts by mass, the coating is likely to be worn. According to this configuration, it is possible to further reduce the frictional resistance of the coating against the mating member while ensuring the durability of the coating.
- the resin is a silicone resin (corresponding to claim 5).
- the coating film is formed including the silicone resin.
- the bleed lubricant of the rubber elastic body is easy to permeate the coating. Therefore, the lubricating film can be reliably formed on at least a part of the surface of the coating.
- the film is formed including a silicone resin, the film is relatively flexible. Therefore, the coating is easily deformed following the deformation of the rubber elastic body.
- the silicone resin should have a configuration in which the cross-linked structure is sparser than the straight silicone resin and a modified product thereof and has rubber elasticity. Corresponding).
- straight silicone resin means a silicone resin containing only a methyl group and a silicone resin containing only a methylphenyl group.
- modified product of straight silicone resin include an epoxy-modified silicone resin, an alkyd-modified silicone resin, a polyester-modified silicone resin, a silica-modified silicone resin, and an acrylic-modified silicone resin.
- silicone resin having “rubber elasticity” include rubber composite silicone resins and rubber elastic silicone resins used for rubber-based coating agents and the like.
- the lubricating film can be more reliably formed on at least a part of the surface of the coating.
- the rubber elastic body has a holding hole in which the counterpart member is disposed, and the sliding inner surface is the holding hole. It is better to have a configuration that is the inner peripheral surface of the (corresponding to claim 7).
- the frictional resistance of the inner peripheral surface of the holding hole with respect to the outer peripheral surface of the counterpart member can be reduced.
- the torsional torque applied from the outer peripheral surface of the counterpart member to the inner peripheral surface of the holding hole can be reduced.
- the manufacturing method of the vibration isolator rubber member of this invention absorbs at least one part of the vibration of the other party member, and is sliding sliding relatively to this other party member.
- a method for producing a vibration-proof rubber member having a surface, a crosslinking step for producing a rubber elastic body made of a self-lubricating rubber containing an elastomer and a bleed lubricant by a crosslinking reaction, and the rubber elasticity A degreasing step for degreasing the sliding inner surface disposed inside the sliding surface of the body surface, and the sliding inner surface after degreasing, selected from a mercapto group, a vinyl group, an epoxy group, a methacryloxy group, and an amino group
- the manufacturing method of the vibration-proof rubber member of the present invention includes a crosslinking step, a degreasing step, a coating step, and a firing step.
- a crosslinking step a rubber elastic body is produced by a crosslinking reaction.
- the degreasing step the bleeding lubricant that oozes out from the sliding inner surface is temporarily removed by degreasing the sliding inner surface.
- the coating step a paint is applied to the sliding inner surface from which the bleed lubricant has been removed (including spraying as well as brushing).
- the paint is cured by heat to form a film on the sliding inner surface of the rubber elastic body.
- the coating and the rubber elastic body are firmly bonded (chemically bonded) with one or more functional groups selected from mercapto groups, vinyl groups, epoxy groups, methacryloxy groups, and amino groups.
- the rubber elastic bleed lubricant permeates the film and oozes out to the surface of the film.
- a lubricating film is formed on the surface of the film by the bleed lubricant. Note that the coating and the rubber elastic body are firmly bonded. For this reason, there is little possibility that a bleeding lubricant oozes out from the interface between the coating and the rubber elastic body.
- a lubricating film that is particularly difficult to form is utilized by chemical bonding with one or more functional groups selected from mercapto groups, vinyl groups, epoxy groups, methacryloxy groups, and amino groups.
- one or more functional groups selected from mercapto groups, vinyl groups, epoxy groups, methacryloxy groups, and amino groups.
- an anti-vibration rubber member that has a small frictional resistance with the counterpart member and is less likely to peel off the coating from the rubber elastic body. Further, according to the present invention, it is possible to provide a relatively simple method for manufacturing the vibration-proof rubber member.
- FIG. 1 is a layout view of the stopper according to the first embodiment.
- FIG. 2 is an axial cross-sectional view of the stopper and the lower arm bush mounted on the bracket.
- FIG. 3 is a perspective view of the stopper.
- FIG. 4 is an exploded perspective view of the stopper.
- FIG. 5 is an enlarged view in the frame V of FIG.
- FIG. 6 is an enlarged cross-sectional view of the rubber elastic body after the crosslinking step and before the degreasing step.
- FIG. 7 is an enlarged cross-sectional view of the rubber elastic body after the degreasing process and before the coating process.
- FIG. 8 is an enlarged cross-sectional view of the rubber elastic body after the coating process and before the firing process.
- FIG. 9 is an enlarged cross-sectional view of the rubber elastic body during the firing process.
- FIG. 10 is an enlarged cross-sectional view of the stopper after the firing step.
- FIG. 11 is a layout view of a stabilizer bush according to the second embodiment.
- FIG. 12 is a combined perspective view of the stabilizer bush and the bracket.
- FIG. 13 is an exploded perspective view of the stabilizer bush and the bracket.
- 14 is a cross-sectional view in the XIV-XIV direction of FIG.
- FIG. 15 is an enlarged view in the frame XV of FIG.
- the vibration-proof rubber member of the present invention is embodied as a stopper.
- FIG. 1 shows a layout of stoppers according to the present embodiment.
- members such as a suspension 80, a hub unit 81, and a drive shaft 83 are disposed near the front wheel of the vehicle 8.
- the suspension 80 includes a spring 800R, a shock absorber 801R, a lower suspension arm 84R, and the like.
- the lower suspension arm 84R is made of steel and has a substantially V-shaped plate shape.
- a bush accommodating cylinder portion 840R is formed at the front end (one V-shaped end) of the lower suspension arm 84R.
- the lower arm bush 4R is press-fitted inside the bush housing cylinder portion 840R.
- the stopper 3R is disposed in front of the lower arm bush 4R.
- the bracket 5R is made of steel and has a C-shape opening upward.
- the bracket 5R is fixed to the body (not shown) of the vehicle 8.
- the stopper 3R and the bush accommodating cylinder 840R (lower arm bush 4R) are accommodated inside the C-shaped opening of the bracket 5R.
- the stopper 3R and the lower arm bush 4R are swingably attached to the bracket 5R by a bolt 841R and a nut 842R.
- the stopper 3R suppresses the bush housing cylindrical portion 840R from being in direct sliding contact with the bracket 5R.
- the bush accommodating cylinder portion 840R is included in the mating member of the present invention.
- FIG. 2 shows a cross-sectional view in the axial direction (front-rear direction) in a state where the stopper and the lower arm bushing of the present embodiment are mounted on the bracket.
- FIG. 3 is a perspective view of the stopper according to the present embodiment.
- FIG. 4 shows an exploded perspective view of the stopper of the present embodiment.
- FIG. 5 shows an enlarged view in the frame V of FIG.
- FIG. 5 is a schematic diagram for explaining the function of the stopper 3R of the present embodiment.
- the stopper 3R of the present embodiment includes a disk 30R and a rubber member main body 31R.
- the disk 30R is made of steel and has a ring shape.
- a bolt insertion hole 300R is formed at the center of the disc 30R.
- a bolt 841R is inserted into the bolt insertion hole 300R.
- the rubber member main body 31R includes a rubber elastic body 32R, a coating 33R, and a lubricating film 34R.
- the rubber elastic body 32R has a ring shape.
- the rubber elastic body 32R is disposed so as to cover the rear surface and the outer peripheral surface of the disk 30R.
- the rubber elastic body 32R and the disc 30R are bonded by cross-linking.
- a plurality of ribs 320R are formed on the rear surface of the rubber elastic body 32R.
- the plurality of ribs 320R are arranged in a circle.
- the plurality of ribs 320R are continuous in a dotted line.
- the surface of the rib 320R is included in the sliding inner surface of the present invention.
- the surface of the rib 320R has a substantially smooth surface shape with a predetermined curvature.
- the coating 33R covers the surface of the rubber elastic body 32R.
- the film 33R has a thickness of about 20 ⁇ m.
- the lubricating film 34R is liquid and covers the surface of the coating 33R.
- the rubber elastic body 32R is made of self-lubricating rubber.
- the rubber elastic body 32R includes a blend rubber (hereinafter simply referred to as “blend rubber”) 321R of NR (natural rubber) and BR (butadiene rubber) and oleic amide 322R.
- blend rubber 321R is included in the elastomer of the present invention.
- Oleic acid amide 322R is included in the bleed lubricant of the present invention.
- the coating 33 ⁇ / b> R (for example, manufactured by STTY Corporation “SOLVEST 398”) includes a silicone resin 330 ⁇ / b> R having a mercapto group and a solid lubricant 331 ⁇ / b> R made of PTFE.
- the solid lubricant 331R is included in an amount of 120 parts by mass with respect to 100 parts by mass of the silicone resin 330R.
- the solid lubricant 331R has a substantially spherical shape with a particle diameter (median diameter) of about 1 ⁇ m or less and an average particle diameter of about 0.5 ⁇ m.
- Lubricating film 34R is formed of oleic amide 322R of rubber elastic body 32R. That is, the oleic amide 322R of the rubber elastic body 32R passes through the coating 33R as indicated by the white arrow in FIG. And it oozes out on the surface of the film 33R. The lubricating film 34R is formed by the oleic amide 322R that has oozed out.
- the lower arm bush 4R includes an inner cylinder fitting 40R, an outer cylinder fitting 41R, and a rubber member 42R.
- the inner cylinder fitting 40R is made of steel and has a cylindrical shape. Bolts 841R are inserted through the inner cylinder fitting 40R.
- the outer cylinder fitting 41R is made of steel and has a cylindrical shape.
- the outer cylinder fitting 41R is disposed on the radially outer side of the inner cylinder fitting 40R.
- the outer cylinder fitting 41R is press-fitted into the bush accommodating cylinder portion 840R.
- the rubber member 42R is made of rubber and is interposed between the inner cylinder fitting 40R and the outer cylinder fitting 41R. The rubber member 42R, the inner cylinder fitting 40R, and the outer cylinder fitting 41R are bonded by cross-linking.
- the bracket 5R includes a front wall 50R and a rear wall 51R.
- a bolt insertion hole 500R is formed in the front wall 50R.
- a bolt insertion hole 510R is formed in the rear wall 51R.
- the bolt 841R passes through the bolt insertion hole 500R, the bolt insertion hole 300R, the inner cylinder fitting 40R, and the bolt insertion hole 510R.
- a nut 842R is screwed to the penetrating end (rear end) of the bolt 841R.
- a predetermined clearance C is secured between the stopper 3R and the bush housing cylinder portion 840R.
- the bush accommodating cylinder portion 840R may slide forward with respect to the outer peripheral surface of the outer cylinder fitting 41R.
- the rear surface of the stopper 3R specifically, the surface of the lubricating film 34R covering the vicinity of the top of the rib 320R (the surface of the coating 33R for the portion where the lubricating film 34R is insufficient
- the front end of the bush housing cylinder portion 840R Relatively touches the surface.
- FIG. 6 shows an enlarged cross-sectional view of the rubber elastic body after the crosslinking step and before the degreasing step.
- FIG. 7 shows the expanded sectional view of the rubber elastic body after a degreasing process and before an application
- FIG. 8 the expanded sectional view of the rubber elastic body after an application
- FIG. 9 the expanded sectional view of the rubber elastic body in a baking process is shown.
- FIG. 10 the expanded sectional view of the stopper of this embodiment after a baking process is shown. 6 to FIG. 10 show portions corresponding to FIG. 5 (in FIG. 6 to FIG. 10, FIG. 5 is shown rotated by 90 °).
- the composition is prepared by kneading the raw material of the blend rubber 321R, oleic amide 322R, a crosslinking agent, and the like.
- the disc 30R (see FIG. 2) is placed in the cavity.
- the composition is then poured into the mold cavity.
- the raw material of the blend rubber 321R in the cavity is subjected to a crosslinking reaction by holding the mold at 160 ° C. for 8 minutes.
- the mold is opened, and the intermediate body in which the rubber elastic body 32R and the disc 30R are cross-linked and bonded is recovered from the cavity.
- oleic amide 322R oozes out from the surface of the rubber elastic body 32R.
- the surface of the rubber elastic body 32R is degreased with IPA (isopropyl alcohol). Then, as shown in FIG. 7, the oleic amide 322R is removed from the surface of the rubber elastic body 32R.
- IPA isopropyl alcohol
- the coating 35R is applied to the surface of the clean rubber elastic body 32R.
- the paint 35R contains a raw material 332R of a silicone resin 330R having a mercapto group and a solid lubricant 331R made of PTFE.
- the rubber elastic body 32R coated with the paint 35R is fired at 100 ° C. for 30 minutes.
- the raw material 332R shown in FIG. 8 is thermally cured.
- a film 33R is formed on the surface of the rubber elastic body 32R.
- the oleic amide 322R of the rubber elastic body 32R passes through the coating 33R.
- a lubricating film 34R is formed on the surface of the film 33R by the oleic amide 322R that has passed through the film 33R. In this way, the stopper 3R of the present embodiment is manufactured.
- the lubricating film 34R of the stopper 3R of the present embodiment is in sliding contact with the bush housing cylinder portion 840R.
- the coating 33R is exposed from the portion and is in sliding contact with the bush housing cylinder portion 840R. That is, even when the lubricating film 34R is insufficient, the coating 33R containing the oleic acid amide 322R and the solid lubricant 331R is in sliding contact with the bush housing cylinder portion 840R.
- the lubricating film 34R is normally in sliding contact with the bush housing cylinder portion 840R. Further, when the lubricating film 34R is insufficient, the coating 33R comes into sliding contact with the bush housing cylinder portion 840R. Further, the rubber elastic body 32R does not slide in contact with the bush housing cylinder portion 840R. For this reason, the frictional resistance between the bush housing cylinder portion 840R is small.
- a mercapto group (—SH) is introduced into the silicone resin 330R forming the coating 33R.
- the mercapto group is a functional group having high reactivity with the elastomer.
- the rubber elastic body 32R and the coating 33R can be firmly bonded (chemically bonded). Accordingly, the coating 33R is hardly peeled off from the rubber elastic body 32R. Further, the coating 33R easily deforms following the deformation of the rubber elastic body 32R.
- the solid lubricant 331R is made of PTFE having a particularly small friction coefficient. Also in this respect, the coating 33R of the stopper 3R according to the present embodiment has a small frictional resistance with respect to the bush housing cylinder portion 840R.
- the solid lubricant 331R is included in an amount of 120 parts by mass with respect to 100 parts by mass of the silicone resin 330R. For this reason, it is possible to reduce the frictional resistance of the coating 33R with respect to the bush housing cylinder portion 840R while ensuring the durability of the coating 33R.
- the resin forming the coating 33R is the silicone resin 330R.
- the oleic amide 322R of the rubber elastic body 32R is likely to pass through the coating 33R. Therefore, the lubricating film 34R can be reliably formed on the surface of the coating 33R.
- the coating 33R is formed including the silicone resin 330R, the coating 33R is relatively flexible. Therefore, also in this respect, the coating 33R easily deforms following the deformation of the rubber elastic body 32R.
- the silicone resin 330R forming the coating 33R (for example, manufactured by "STVEST 398") is a rubber elastic silicone resin. Silicone resin 330R has a looser cross-linked structure than straight silicone resin and its modified products, and has rubber elasticity. For this reason, the oleic amide 322R of the rubber elastic body 32R is more easily transmitted through the coating 33R. Therefore, the lubricating film 34R can be formed more reliably.
- the oleic amide 322R can be held by the permeable coating 33R. For this reason, unlike the stabilizer bush of the above-mentioned patent document 2, it is not necessary to form the recessed part for holding oleic amide 322R in the rubber elastic body 32R.
- the interface between the rubber elastic body 32R and the coating 33R has an uneven shape microscopically. That is, at the interface, the rubber elastic body 32R and the coating 33R bite into each other. For this reason, the rubber elastic body 32R and the film 33R can be firmly joined by the so-called “anchor effect”.
- the coating 35R can be reliably applied to the surface of the rubber elastic body 32R in the application step.
- the coating 33 ⁇ / b> R and the rubber elastic body 32 ⁇ / b> R can be firmly bonded (chemically bonded) by the mercapto group in the firing step.
- the lubricating film 34R can be formed on the surface of the coating 33R by the oleic amide 322R of the rubber elastic body 32R.
- the vibration-proof rubber member of the present invention is embodied as a stabilizer bush.
- FIG. 11 shows a layout of the stabilizer bushing of the present embodiment.
- members such as a suspension 90, a hub unit 91, a steering gear 92, and a drive shaft 93 are disposed near the front wheel of the vehicle 9.
- the suspension 90 includes springs 900L and 900R, shock absorbers 901L and 901R, lower suspension arms 902L and 902R, a stabilizer bar 903, and the like.
- the stabilizer bar 903 is made of steel and has a long-axis pipe shape that bulges forward in a C-shape.
- Both ends in the left-right direction of the stabilizer bar 903 are connected to the lower suspension arms 902L and 902R.
- the left and right two portions of the center portion of the stabilizer bar 903 are connected to the body (not shown) of the vehicle 9 via the stabilizer bushes 1L and 1R and the brackets 2L and 2R.
- the stabilizer bushes 1L and 1R are interposed between the stabilizer bar 903 and the body of the vehicle 9.
- the stabilizer bushes 1 ⁇ / b> L and 1 ⁇ / b> R suppress the vibration input from the front wheels from being transmitted to the body of the vehicle 9 via the stabilizer bar 903.
- the stabilizer bar 903 is included in the counterpart member of the present invention.
- the left and right stabilizer bushes 1L and 1R have the same configuration.
- the configuration of the left stabilizer bush 1L will be described, and the description will also serve as the description of the configuration of the right stabilizer bush 1R.
- FIG. 12 shows a combined perspective view of the stabilizer bush and the bracket of the present embodiment.
- FIG. 13 the disassembled perspective view of the stabilizer bush and bracket of this embodiment is shown.
- FIG. 14 shows a cross-sectional view in the XIV-XIV direction of FIG.
- the stabilizer bush 1L of the present embodiment includes a rubber elastic body 10L, a coating 11L, and a lubricating film 12L.
- the rubber elastic body 10L has a solid U shape when viewed from the left or right. That is, the upper part of the rubber elastic body 10L has a rectangular shape. The lower part of the rubber elastic body has a semicircular shape.
- the rubber elastic body 10L includes a holding hole 100L penetrating in the left-right direction.
- the inner peripheral surface of the holding hole 100L is included in the sliding inner surface of the present invention.
- the inner peripheral surface of the holding hole 100L has a substantially smooth surface shape with a predetermined curvature. That is, artificial unevenness (for example, the lattice-like ribs of Patent Document 2) is not formed on the inner peripheral surface of the holding hole 100L.
- a stabilizer bar 903 is disposed in the holding hole 100L.
- the stabilizer bar 903 is inserted into the holding hole 100L from the outside of the rubber elastic body 10L through an opening formed by opening the cutting portion 101L in the vertical direction.
- a pair of flange portions 104L are formed on the left and right edges of the rubber elastic body 10L. Each of the pair of flange portions 104L has a U-shape that opens upward.
- the coating 11L has a cylindrical shape.
- the coating 11L covers the inner peripheral surface of the holding hole 100L.
- the film thickness (radial thickness) of the coating 11L is about 20 ⁇ m.
- the lubricating film 12L is liquid and covers the surface (inner peripheral surface) of the coating 11L.
- the surface of the lubricating film 12L (the surface of the coating 11L when the lubricating film 12L is insufficient) is in contact with the outer peripheral surface of the stabilizer bar 903.
- FIG. 15 shows an enlarged view in the frame XV of FIG.
- FIG. 15 is a schematic diagram for explaining the functions of the stabilizer bushes 1L and 1R of the present embodiment.
- Rubber elastic body 10L is made of self-lubricating rubber.
- the rubber elastic body 10L includes a blend rubber (hereinafter simply referred to as “blend rubber”) 102L of NR and BR and an oleic acid amide 103L.
- blend rubber 102L is included in the elastomer of the present invention.
- Oleic acid amide 103L is included in the bleed lubricant of the present invention.
- the coating 11L (for example, manufactured by STTY Corporation “SOLVEST 398”) includes a silicone resin 110L having a mercapto group and a solid lubricant 111L made of PTFE.
- the solid lubricant 111L is included in an amount of 120 parts by mass with respect to 100 parts by mass of the silicone resin 110L.
- the solid lubricant 111L has a substantially spherical shape with a particle diameter (median diameter) of about 1 ⁇ m or less and an average particle diameter of about 0.5 ⁇ m.
- the lubricating film 12L is formed of oleic acid amide 103L of rubber elastic body 10L. That is, the oleic acid amide 103L of the rubber elastic body 10L passes through the coating 11L as shown by the white arrow in FIG. And it oozes out on the surface of the coating 11L.
- the lubricating film 12L is formed by the oleic amide 103L that has oozed out.
- the stabilizer bar 903 is twisted around the axis according to the behavior of the vehicle 9 as indicated by the white double-ended arrows.
- the stabilizer bush 1L is fixed to the body of the vehicle 9 via a bracket 2L described later.
- the surface of the lubricating film 12 ⁇ / b> L (the surface of the coating 11 ⁇ / b> L when the lubricating film 12 ⁇ / b> L is insufficient) is relatively in sliding contact with the outer peripheral surface of the stabilizer bar 903.
- bracket structure Next, the structure of the brackets 2L and 2R of this embodiment will be described.
- the structures of the left and right brackets 2L and 2R are the same.
- the structure of the left bracket 2L will be described, and the description will also serve as the description of the structure of the right bracket 2R.
- the bracket 2L of the present embodiment is made of steel, and includes a bush holding portion 20L and a pair of fixing portions 21L.
- the bush holding portion 20L has a U shape that opens upward as viewed from the left or right.
- a pair of flange portions 200L are formed on both left and right edges of the bush holding portion 20L.
- a portion between the pair of flange portions 104L in the stabilizer bush 1L is accommodated inside the U-shaped opening of the bush holding portion 20L.
- the pair of flange portions 200L are in contact with the pair of flange portions 104L from the inner side in the left-right direction. By the contact, it is possible to suppress the stabilizer bush 1L from falling off from the bracket 2L in the left-right direction.
- Each of the pair of fixed portions 21L has a rectangular plate shape.
- the pair of fixing portions 21L are connected to both U-shaped ends of the bush holding portion 20L.
- Each of the pair of fixing portions 21L is formed with a bolt insertion hole 210L.
- Bolts 211L are respectively inserted from below into the pair of bolt insertion holes 210L.
- a concave portion 950L and a pair of bolt fastening holes 951L are disposed on the lower surface of the body 95 of the vehicle 9.
- the internal space of the recess 950L has a rectangular parallelepiped shape.
- the upper portion of the stabilizer bush 1L is inserted into the recess 950L.
- the pair of bolt fastening holes 951L are arranged in the front-rear direction of the recess 950L.
- the bolt 211L passes through the bolt insertion hole 210L and is screwed to the bolt fastening hole 951L.
- the bracket 2L is fixed to the lower surface of the body 95 by the pair of bolts 211L.
- the stabilizer bush 1L is sandwiched and fixed between the bracket 2L and the lower surface of the body 95.
- the rubber elastic body 10L is fixed, the upper portion of the rubber elastic body 10L is compressed and deformed by the tightening margin S (see FIGS. 12 and 13). Due to the tightening allowance S, the stabilizer bush 1L is in pressure contact with the outer peripheral surface of the stabilizer bar 903.
- the manufacturing method of the stabilizer bushes 1L and 1R of the present embodiment is the same as the manufacturing method of the stopper of the first embodiment except that it is not necessary to insert the disc 30R (see FIG. 2) into the cavity in the bridging process. Therefore, explanation is omitted here.
- the stabilizer bushes 1L and 1R and the manufacturing method thereof according to the present embodiment have the same functions and effects as the stoppers and the manufacturing method thereof according to the first embodiment with respect to the parts having the same configuration.
- the coating 11L and the lubricating film 12L are laminated on the inner peripheral surface of the holding hole 100L. is doing. For this reason, compared with the case where the coating 11L and the lubricating film 12L are first laminated on the inner peripheral surface of the holding hole 100L and then the cut portion 101L is formed in the rubber elastic body 10L, the coating 11L is made of the rubber elastic body 10L. Hard to peel off.
- the material of the elastomer of the rubber elastic bodies 32R and 10L is not particularly limited.
- NR, BR, IR (isoprene rubber), SBR (styrene butadiene rubber), CR (chloroprene rubber), NBR (nitrile rubber), EPDM (ethylene propylene rubber), IIR (butyl rubber), ACM (acrylic rubber), U (Urethane rubber), silicone rubber, or a blended material thereof can be used.
- the material of the bleed lubricant of the rubber elastic bodies 32R, 10L is not particularly limited.
- fatty acid amides unsaturated fatty acid amides (oleic acid amide, erucic acid amide, etc.), saturated fatty acid amides (stearic acid amide, behenic acid amide, etc.)
- silicone oil polyethylene glycol type surfactants and the like can be used.
- the material of the resin of the coatings 33R and 11L is not particularly limited.
- polyester, acrylic, urethane or the like can be used.
- the functional groups of the resins of the coatings 33R and 11L are not limited to mercapto groups.
- a vinyl group, an epoxy group, a methacryloxy group, an amino group, or the like can be used.
- the functional group is desirably selected according to the elastomer material of the rubber elastic bodies 32R and 10L.
- the material of the solid lubricant of the coatings 33R and 11L is not particularly limited.
- graphite, molybdenum disulfide, fluorine resin, or the like can be used.
- fluororesin include PFA (tetrafluoroethylene / perfluoroalkoxy vinyl ether copolymer), FEP (tetrafluoroethylene / hexafluoropropylene copolymer), PCTFE (polychlorotrifluoroethylene), ETFE (tetrafluoro).
- Ethylene / ethylene copolymer Ethylene / ethylene copolymer
- ECTFE chlorotrifluoroethylene / ethylene copolymer
- PVDF polyvinylidene fluoride
- PVF polyvinyl fluoride
- the vibration isolating rubber member of the present invention is embodied as the stopper 3R for the lower suspension arm 84R and the stabilizer bushes 1L, 1R.
- a stopper for an engine mount as disclosed in Japanese Patent Application Laid-Open Nos. 2005-106169 and 2005-249062, and Japanese Patent Application Laid-Open No. 2008-89002 and Japanese Patent Application Laid-Open No. 2008-95785.
- the anti-vibration rubber member of the present invention may be embodied as a stopper for such a differential mount.
- sample The sample used for the test is a stabilizer bush 1L (see FIGS. 12 to 15) of the second embodiment in which the content of the solid lubricant 111L of the coating 11L is set at four levels.
- Example 1 in which the content of the solid lubricant 111L was 0 parts by mass with respect to 100 parts by mass of the silicone resin 110L. Further, Example 2 was obtained by setting the content of the solid lubricant 111L to 120 parts by mass (that is, the stabilizer bush 1L itself of the second embodiment) with respect to 100 parts by mass of the silicone resin 110L. Moreover, what made content of the solid lubricant 111L 160 mass parts with respect to silicone resin 110L100 mass parts was set as Example 3. FIG. Moreover, what made content of the solid lubricant 111L 200 mass parts with respect to 100 mass parts of silicone resins 110L was set as Example 4. Further, a sample having only the rubber elastic body 10L (without the coating 11L and the lubricating film 12L) was used as a comparative example.
- each sample was fixed to a jig (corresponding to the lower surface of the body 95 of the vehicle 9 of the second embodiment) by the bracket 2L.
- a shaft (corresponding to the stabilizer bar 903 of the second embodiment) was inserted into the holding hole 100L of each sample. Then, using a torque wrench, the shaft was twisted ⁇ 15 ° around the axis. Then, the torsion torque applied to the shaft was measured.
- the frictional resistance between the shaft and the sample is small, the torsional torque applied to the shaft is small.
- the frictional resistance between the shaft and the sample is large, the torsional torque applied to the shaft increases.
- 1L Stabilizer bush (vibration isolation rubber member), 1R: Stabilizer bush (vibration isolation rubber member), 2L: Bracket, 2R: Bracket, 3R: Stopper (vibration isolation rubber member), 4R: Lower arm bush, 5R: Bracket, 8 : Vehicle, 9: Vehicle.
- 10L rubber elastic body, 11L: coating film, 12L: lubricating film, 20L: bush holding section, 21L: fixing section, 30R: disc, 31R: rubber member body, 32R: rubber elastic body, 33R: coating film, 34R: lubrication Membrane, 35R: Paint, 40R: Inner cylinder fitting, 41R: Outer cylinder fitting, 42R: Rubber member, 50R: Front wall, 51R: Rear wall, 80: Suspension, 81: Hub unit, 83: Drive shaft, 84R: Lower Suspension arm, 90: suspension, 91: hub unit, 92: steering gear, 93: drive shaft, 95: body.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
- Vibration Prevention Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本実施形態は、本発明の防振ゴム部材を、ストッパとして具現化したものである。
まず、本実施形態のストッパの配置について説明する。図1に、本実施形態のストッパの配置図を示す。図1に示すように、車両8の前輪付近には、サスペンション80、ハブユニット81、ドライブシャフト83などの部材が配置されている。サスペンション80は、スプリング800R、ショックアブソーバ801R、ロアサスペンションアーム84Rなどを備えている。ロアサスペンションアーム84Rは、鋼製であって、略V字板状を呈している。ロアサスペンションアーム84Rの前端(V字一端)には、ブッシュ収容筒部840Rが形成されている。ブッシュ収容筒部840Rの内部には、ロアアームブッシュ4Rが圧入されている。ストッパ3Rは、ロアアームブッシュ4Rの前方に、配置されている。ブラケット5Rは、鋼製であって、上方に開口するC字状を呈している、ブラケット5Rは、車両8のボディ(図略)に固定されている。ストッパ3Rおよびブッシュ収容筒部840R(ロアアームブッシュ4R)は、ブラケット5RのC字開口内部に収容されている。ボルト841Rおよびナット842Rにより、ストッパ3Rおよびロアアームブッシュ4Rは、ブラケット5Rに、揺動可能に取り付けられている。ストッパ3Rは、ブッシュ収容筒部840Rが、ブラケット5Rに、直接的に摺接するのを抑制している。ブッシュ収容筒部840Rは、本発明の相手側部材に含まれる。
次に、本実施形態のストッパ3Rの構造について説明する。図2に、本実施形態のストッパおよびロアアームブッシュがブラケットに装着された状態の軸方向(前後方向)断面図を示す。図3に、本実施形態のストッパの斜視図を示す。図4に、本実施形態のストッパの分解斜視図を示す。図5に、図2の枠V内の拡大図を示す。なお、図5は、本実施形態のストッパ3Rの機能を説明するための、模式図である。図2~図5に示すように、本実施形態のストッパ3Rは、円板30Rと、ゴム部材本体31Rと、を備えている。
次に、本実施形態のストッパ3Rの材質について、図5を参照しながら説明する。ゴム弾性体32Rは、自己潤滑ゴム製である。ゴム弾性体32Rは、NR(天然ゴム)とBR(ブタジエンゴム)とのブレンドゴム(以下、単に「ブレンドゴム」と称す。)321Rと、オレイン酸アミド322Rと、を備えている。ブレンドゴム321Rは、本発明のエラストマーに含まれる。オレイン酸アミド322Rは、本発明のブリード性潤滑剤に含まれる。
次に、本実施形態のロアアームブッシュ4Rおよびブラケット5Rの構造について、図2を参照しながら、簡単に説明する。ロアアームブッシュ4Rは、内筒金具40Rと外筒金具41Rとゴム部材42Rとを備えている。内筒金具40Rは、鋼製であって、円筒状を呈している。内筒金具40Rの内部には、ボルト841Rが挿通されている。外筒金具41Rは、鋼製であって、円筒状を呈している。外筒金具41Rは、内筒金具40Rの径方向外側に配置されている。外筒金具41Rは、ブッシュ収容筒部840Rに圧入されている。ゴム部材42Rは、ゴム製であって、内筒金具40Rと外筒金具41Rとの間に介在している。ゴム部材42Rと内筒金具40Rと外筒金具41Rとは、架橋接着されている。
次に、本実施形態のストッパ3Rの製造方法について説明する。本実施形態のストッパ3Rの製造方法は、組成物調製工程と架橋工程と脱脂工程と塗布工程と焼成工程とを有している。図6に、架橋工程後、脱脂工程前のゴム弾性体の拡大断面図を示す。図7に、脱脂工程後、塗布工程前のゴム弾性体の拡大断面図を示す。図8に、塗布工程後、焼成工程前のゴム弾性体の拡大断面図を示す。図9に、焼成工程中のゴム弾性体の拡大断面図を示す。図10に、焼成工程後の本実施形態のストッパの拡大断面図を示す。なお、図6~図10に示すのは、いずれも図5に対応する部位である(図6~図10においては、図5を90°回転して示している)。
次に、本実施形態のストッパ3Rおよびその製造方法の作用効果について説明する。本実施形態のストッパ3Rの潤滑膜34Rは、ブッシュ収容筒部840Rに摺接する。また、例えば潤滑膜34Rの一時的な膜切れなどにより、潤滑膜34Rが不足する部分が摺動面にある場合には、当該部分から被膜33Rが表出し、ブッシュ収容筒部840Rに摺接する。すなわち、潤滑膜34Rが不足する場合であっても、オレイン酸アミド322Rおよび固体潤滑剤331Rを含有する被膜33Rが、ブッシュ収容筒部840Rに摺接する。このように、本実施形態のストッパ3Rは、通常は、潤滑膜34Rがブッシュ収容筒部840Rに摺接する。また、潤滑膜34Rが不足する場合は、被膜33Rがブッシュ収容筒部840Rに摺接する。また、ゴム弾性体32Rがブッシュ収容筒部840Rに摺接しない。このため、ブッシュ収容筒部840Rとの間の摩擦抵抗が小さい。
本実施形態は、本発明の防振ゴム部材を、スタビライザブッシュとして具現化したものである。
まず、本実施形態のスタビライザブッシュの配置について説明する。図11に、本実施形態のスタビライザブッシュの配置図を示す。図11に示すように、車両9の前輪付近には、サスペンション90、ハブユニット91、ステアリングギヤ92、ドライブシャフト93などの部材が配置されている。サスペンション90は、スプリング900L、900R、ショックアブソーバ901L、901R、ロアサスペンションアーム902L、902R、スタビライザバー903などを備えている。スタビライザバー903は、鋼製であって、前方にC字状に膨出する長軸パイプ状を呈している。スタビライザバー903の左右方向両端は、ロアサスペンションアーム902L、902Rに連結されている。スタビライザバー903の中央部分の左右二箇所は、スタビライザブッシュ1L、1R、ブラケット2L、2Rを介して、車両9のボディ(図略)に連結されている。このように、スタビライザブッシュ1L、1Rは、スタビライザバー903と、車両9のボディと、の間に介装されている。スタビライザブッシュ1L、1Rは、前輪から入力される振動が、スタビライザバー903を介して、車両9のボディに伝達されるのを抑制している。スタビライザバー903は、本発明の相手側部材に含まれる。
次に、本実施形態のスタビライザブッシュ1L、1Rの構造について説明する。左右二つのスタビライザブッシュ1L、1Rの構成は同じである。以下、左側のスタビライザブッシュ1Lの構成について説明し、当該説明をもって右側のスタビライザブッシュ1Rの構成についての説明を兼ねるものとする。
次に、本実施形態のスタビライザブッシュ1L、1Rの材質について説明する。図15に、図14の枠XV内の拡大図を示す。なお、図15は、本実施形態のスタビライザブッシュ1L、1Rの機能を説明するための、模式図である。
次に、本実施形態のブラケット2L、2Rの構造について説明する。左右二つのブラケット2L、2Rの構造は同じである。以下、左側のブラケット2Lの構造について説明し、当該説明をもって右側のブラケット2Rの構造についての説明を兼ねるものとする。図12~図14に示すように、本実施形態のブラケット2Lは、鋼製であって、ブッシュ保持部20Lと、一対の固定部21Lと、を備えている。
本実施形態のスタビライザブッシュ1L、1Rの製造方法は、架橋工程において円板30R(図2参照)をキャビティにインサートする必要がない以外は、第一実施形態のストッパの製造方法と同様である。したがって、ここでは説明を割愛する。
次に、本実施形態のスタビライザブッシュ1L、1Rおよびその製造方法の作用効果について説明する。本実施形態のスタビライザブッシュ1L、1Rおよびその製造方法は、構成が共通する部分に関しては、第一実施形態のストッパおよびその製造方法と同様の作用効果を有する。
以上、本発明の防振ゴム部材およびその製造方法の実施の形態について説明した。しかしながら、実施の形態は上記形態に特に限定されるものではない。当業者が行いうる種々の変形的形態、改良的形態で実施することも可能である。
試験に用いるサンプルは、第二実施形態のスタビライザブッシュ1L(図12~図15参照)において、被膜11Lの固体潤滑剤111Lの含有量を、4水準設定したものである。
まず、各サンプルを、ブラケット2Lにより、ジグ(第二実施形態の車両9のボディ95の下面に相当)に固定した。次いで、各サンプルの保持孔100Lに、シャフト(第二実施形態のスタビライザバー903に相当)を、挿通した。それから、トルクレンチを用いて、シャフトを軸周りに±15°だけ捩った。そして、シャフトに加わる捩りトルクを測定した。シャフトとサンプルとの間の摩擦抵抗が小さい場合、シャフトに加わる捩りトルクは小さくなる。反対に、シャフトとサンプルとの間の摩擦抵抗が大きい場合、シャフトに加わる捩りトルクは大きくなる。
比較例の捩りトルクを100%とした場合、実施例1の捩りトルクは23%だった。また、実施例2の捩りトルクは25%だった。また、実施例3の捩りトルクは42%だった。また、実施例4の捩りトルクは55%だった。このように、実施例1~実施例4の方が、比較例よりも捩りトルクが小さいことが判った。すなわち、実施例1~実施例4の方が、比較例よりも、サンプルとシャフトとの間の摩擦抵抗が小さいことが判った。
10L:ゴム弾性体、11L:被膜、12L:潤滑膜、20L:ブッシュ保持部、21L:固定部、30R:円板、31R:ゴム部材本体、32R:ゴム弾性体、33R:被膜、34R:潤滑膜、35R:塗料、40R:内筒金具、41R:外筒金具、42R:ゴム部材、50R:前壁、51R:後壁、80:サスペンション、81:ハブユニット、83:ドライブシャフト、84R:ロアサスペンションアーム、90:サスペンション、91:ハブユニット、92:ステアリングギヤ、93:ドライブシャフト、95:ボディ。
100L:保持孔、101L:切断部、102L:ブレンドゴム(エラストマー)、103L:オレイン酸アミド(ブリード性潤滑剤)、104L:フランジ部、110L:シリコーン樹脂、111L:固体潤滑剤、200L:フランジ部、210L:ボルト挿通孔、211L:ボルト、300R:ボルト挿通孔、320R:リブ、321R:ブレンドゴム(エラストマー)、322R:オレイン酸アミド(ブリード性潤滑剤)、330R:シリコーン樹脂、331R:固体潤滑剤、332R:原料、500R:ボルト挿通孔、510R:ボルト挿通孔、800R:スプリング、801R:ショックアブソーバ、840R:ブッシュ収容筒部(相手側部材)、841R:ボルト、842R:ナット、900L:スプリング、900R:スプリング、901L:ショックアブソーバ、901R:ショックアブソーバ、902L:ロアサスペンションアーム、902R:ロアサスペンションアーム、903:スタビライザバー(相手側部材)、950L:凹部、951L:ボルト止着孔。
C:クリアランス、S:締め代。
Claims (8)
- 相手側部材の振動の少なくとも一部を吸収すると共に、該相手側部材に相対的に摺接する摺動面を備えてなる防振ゴム部材であって、
エラストマーと、ブリード性潤滑剤と、を含有する自己潤滑ゴム製のゴム弾性体と、
該ゴム弾性体の表面のうち前記摺動面の内側に配置される摺動内面の少なくとも一部を覆うと共に、メルカプト基、ビニル基、エポキシ基、メタクリロキシ基、アミノ基から選ばれる一種類以上の官能基を持つ樹脂を含有し、該ゴム弾性体の変形に追従して変形可能な被膜と、
該被膜の表面の少なくとも一部を覆うと共に、該ゴム弾性体の該ブリード性潤滑剤が該被膜を透過して該被膜の表面に滲み出ることにより形成され、該摺動面の少なくとも一部を形成する潤滑膜と、
を備えてなることを特徴とする防振ゴム部材。 - 前記被膜は、さらに、固体潤滑剤を含有する請求項1に記載の防振ゴム部材。
- 前記固体潤滑剤は、ポリテトラフルオロエチレン製である請求項2に記載の防振ゴム部材。
- 前記被膜は、前記固体潤滑剤を、前記樹脂100質量部に対して、200質量部以下含有する請求項3に記載の防振ゴム部材。
- 前記樹脂は、シリコーン樹脂である請求項1ないし請求項4のいずれかに記載の防振ゴム部材。
- 前記シリコーン樹脂は、ストレートシリコーン樹脂およびその変性物よりも架橋構造が疎であって、ゴム弾性を有する請求項5に記載の防振ゴム部材。
- 前記ゴム弾性体は前記相手側部材が配置される保持孔を有しており、前記摺動内面は該保持孔の内周面である請求項1ないし請求項6のいずれかに記載の防振ゴム部材。
- 相手側部材の振動の少なくとも一部を吸収すると共に、該相手側部材に相対的に摺接する摺動面を備えてなる防振ゴム部材の製造方法であって、
架橋反応により、エラストマーと、ブリード性潤滑剤と、を含有する自己潤滑ゴム製のゴム弾性体を作製する架橋工程と、
該ゴム弾性体の表面のうち前記摺動面の内側に配置される摺動内面を脱脂する脱脂工程と、
脱脂後の該摺動内面に、メルカプト基、ビニル基、エポキシ基、メタクリロキシ基、アミノ基から選ばれる一種類以上の官能基を持つ熱硬化性樹脂を含有する塗料を塗布する塗布工程と、
該塗料が塗布された該ゴム弾性体を焼成することにより、該摺動内面に該塗料からなる被膜を形成すると共に、該被膜を透過して該ゴム弾性体の該ブリード性潤滑剤を該被膜の表面に滲み出させ、該被膜の表面に該ブリード性潤滑剤からなる潤滑膜を形成する焼成工程と、
を有することを特徴とする防振ゴム部材の製造方法。
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EP09817778.5A EP2336597B1 (en) | 2008-09-30 | 2009-09-29 | Vibration-damping rubber member and process for producing same |
CN200980138743.2A CN102171484B (zh) | 2008-09-30 | 2009-09-29 | 隔振橡胶构件及其制造方法 |
JP2010531860A JP4792539B2 (ja) | 2008-09-30 | 2009-09-29 | 防振ゴム部材およびその製造方法 |
US12/936,026 US20110031664A1 (en) | 2008-09-30 | 2009-09-29 | Anti-vibration rubber member and production method thereof |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013002209A1 (ja) * | 2011-06-30 | 2013-01-03 | 東海ゴム工業株式会社 | 防振ゴム部材およびその製造方法 |
WO2013168453A1 (ja) * | 2012-05-07 | 2013-11-14 | Nokクリューバー株式会社 | 摺動部材用組成物 |
WO2014045887A1 (ja) * | 2012-09-21 | 2014-03-27 | 東海ゴム工業株式会社 | 防振ゴム部材およびその製造方法 |
JP2015197198A (ja) * | 2014-04-03 | 2015-11-09 | 東洋ゴム工業株式会社 | 防振装置 |
US10836885B2 (en) | 2017-01-27 | 2020-11-17 | Sumitomo Riko Company Limited | Anti-vibration rubber composition and anti-vibration rubber member |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120062338A (ko) * | 2010-12-06 | 2012-06-14 | 현대자동차주식회사 | 자동차의 현가장치 |
US9074715B2 (en) * | 2013-03-15 | 2015-07-07 | Zsi, Inc. | Cushion insert for a tubing clamp and method of replacement |
JP2018040387A (ja) * | 2016-09-05 | 2018-03-15 | トヨタ自動車株式会社 | サスペンションアーム及びその製造方法 |
CN107584705B (zh) * | 2017-10-20 | 2023-11-03 | 株洲时代新材料科技股份有限公司 | 车轮降噪块的阻尼层填充方法、定位结构及车轮降噪块 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357310A (ja) * | 1986-08-27 | 1988-03-12 | Toyoda Gosei Co Ltd | 車両用スタビライザブツシユ |
JPH02132127A (ja) * | 1988-11-11 | 1990-05-21 | Nippon Sheet Glass Co Ltd | 摩擦低減膜 |
JPH02127818U (ja) * | 1989-03-30 | 1990-10-22 | ||
JPH05255519A (ja) | 1992-03-16 | 1993-10-05 | Marugo Rubber Kogyo Kk | 摩擦音の発生し難いゴム製支持部品及びその製造方法 |
JPH06234886A (ja) * | 1992-08-10 | 1994-08-23 | Tokai Rubber Ind Ltd | 防振ゴム組成物およびそれを用いた防振ゴム |
JPH1060179A (ja) * | 1996-08-23 | 1998-03-03 | Tokai Rubber Ind Ltd | 自己潤滑ゴム組成物および防振ゴム |
JP2003214431A (ja) * | 2002-01-23 | 2003-07-30 | Daido Metal Co Ltd | 摺動部材及びその製造方法 |
JP2005106169A (ja) | 2003-09-30 | 2005-04-21 | Tokai Rubber Ind Ltd | エンジンマウントの別体ストッパ組付構造 |
JP2005200015A (ja) * | 2005-02-14 | 2005-07-28 | Toyo Tire & Rubber Co Ltd | スタビライザブッシュ |
JP2005249062A (ja) | 2004-03-03 | 2005-09-15 | Tokai Rubber Ind Ltd | 筒形エンジンマウント |
JP2006273181A (ja) | 2005-03-30 | 2006-10-12 | Tokai Rubber Ind Ltd | 車両用スタビライザブッシュ |
JP2008089002A (ja) | 2006-09-29 | 2008-04-17 | Tokai Rubber Ind Ltd | 筒型防振装置用ストッパ並びに筒型防振組付体 |
JP2008095785A (ja) | 2006-10-11 | 2008-04-24 | Tokai Rubber Ind Ltd | 筒型防振装置用ストッパ並びに筒型防振組付体 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2946094A (en) * | 1956-06-11 | 1960-07-26 | Kawasaki Sozo | Process of making oil-impregnated machine parts from synthetic resin and the articles manufactured by said process |
US2989657A (en) * | 1956-07-23 | 1961-06-20 | Westinghouse Electric Corp | Laminated structure having polyfluoroethylene on one surface thereof |
JPH02127818A (ja) * | 1988-11-07 | 1990-05-16 | Nec Corp | 位相同期発振器 |
US5439203A (en) * | 1991-10-24 | 1995-08-08 | Toyoda Gosei Co., Ltd. | Vibration-damping bushing with sliding surface on insert located between inner and outer cylinders |
US5984283A (en) * | 1996-03-29 | 1999-11-16 | Toyoda Gosei Co., Ltd. | Vibration-damping rubber in suspension of vehicle |
JP3648869B2 (ja) * | 1996-09-20 | 2005-05-18 | 東海ゴム工業株式会社 | 防振ブッシュ及びその製造方法 |
US6245836B1 (en) * | 1998-04-22 | 2001-06-12 | Oiles Corporation | Lubricating coating compound, sliding structure combining two sliding members in which lubricating coating compound is applied to one of the sliding members, and slide bearing apparatus using the same |
DE19912268A1 (de) * | 1999-03-19 | 2000-09-28 | Audi Ag | Lagerung für einen Stabilisator |
US6474631B2 (en) * | 2000-03-16 | 2002-11-05 | Toyo Tire & Rubber Co., Ltd. | Stabilizer bushing |
-
2009
- 2009-09-29 US US12/936,026 patent/US20110031664A1/en not_active Abandoned
- 2009-09-29 CN CN200980138743.2A patent/CN102171484B/zh active Active
- 2009-09-29 JP JP2010531860A patent/JP4792539B2/ja active Active
- 2009-09-29 EP EP09817778.5A patent/EP2336597B1/en active Active
- 2009-09-29 WO PCT/JP2009/066965 patent/WO2010038746A1/ja active Application Filing
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6357310A (ja) * | 1986-08-27 | 1988-03-12 | Toyoda Gosei Co Ltd | 車両用スタビライザブツシユ |
JPH02132127A (ja) * | 1988-11-11 | 1990-05-21 | Nippon Sheet Glass Co Ltd | 摩擦低減膜 |
JPH02127818U (ja) * | 1989-03-30 | 1990-10-22 | ||
JPH05255519A (ja) | 1992-03-16 | 1993-10-05 | Marugo Rubber Kogyo Kk | 摩擦音の発生し難いゴム製支持部品及びその製造方法 |
JPH06234886A (ja) * | 1992-08-10 | 1994-08-23 | Tokai Rubber Ind Ltd | 防振ゴム組成物およびそれを用いた防振ゴム |
JPH1060179A (ja) * | 1996-08-23 | 1998-03-03 | Tokai Rubber Ind Ltd | 自己潤滑ゴム組成物および防振ゴム |
JP2003214431A (ja) * | 2002-01-23 | 2003-07-30 | Daido Metal Co Ltd | 摺動部材及びその製造方法 |
JP2005106169A (ja) | 2003-09-30 | 2005-04-21 | Tokai Rubber Ind Ltd | エンジンマウントの別体ストッパ組付構造 |
JP2005249062A (ja) | 2004-03-03 | 2005-09-15 | Tokai Rubber Ind Ltd | 筒形エンジンマウント |
JP2005200015A (ja) * | 2005-02-14 | 2005-07-28 | Toyo Tire & Rubber Co Ltd | スタビライザブッシュ |
JP2006273181A (ja) | 2005-03-30 | 2006-10-12 | Tokai Rubber Ind Ltd | 車両用スタビライザブッシュ |
JP2008089002A (ja) | 2006-09-29 | 2008-04-17 | Tokai Rubber Ind Ltd | 筒型防振装置用ストッパ並びに筒型防振組付体 |
JP2008095785A (ja) | 2006-10-11 | 2008-04-24 | Tokai Rubber Ind Ltd | 筒型防振装置用ストッパ並びに筒型防振組付体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2336597A4 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013002209A1 (ja) * | 2011-06-30 | 2013-01-03 | 東海ゴム工業株式会社 | 防振ゴム部材およびその製造方法 |
JP2013011328A (ja) * | 2011-06-30 | 2013-01-17 | Tokai Rubber Ind Ltd | 防振ゴム部材およびその製造方法 |
CN102959274A (zh) * | 2011-06-30 | 2013-03-06 | 东海橡塑工业株式会社 | 隔振橡胶构件及其制造方法 |
US9033320B2 (en) | 2011-06-30 | 2015-05-19 | Sumitomo Riko Company Limited | Anti-vibration rubber member and production method thereof |
WO2013168453A1 (ja) * | 2012-05-07 | 2013-11-14 | Nokクリューバー株式会社 | 摺動部材用組成物 |
US9777241B2 (en) | 2012-05-07 | 2017-10-03 | Nok Klueber Co., Ltd. | Composition for sliding member |
WO2014045887A1 (ja) * | 2012-09-21 | 2014-03-27 | 東海ゴム工業株式会社 | 防振ゴム部材およびその製造方法 |
JP2014062598A (ja) * | 2012-09-21 | 2014-04-10 | Tokai Rubber Ind Ltd | 防振ゴム部材およびその製造方法 |
US9677636B2 (en) | 2012-09-21 | 2017-06-13 | Sumitomo Riko Company Limited | Anti-vibration rubber member and production method thereof |
JP2015197198A (ja) * | 2014-04-03 | 2015-11-09 | 東洋ゴム工業株式会社 | 防振装置 |
US10836885B2 (en) | 2017-01-27 | 2020-11-17 | Sumitomo Riko Company Limited | Anti-vibration rubber composition and anti-vibration rubber member |
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JPWO2010038746A1 (ja) | 2012-03-01 |
CN102171484B (zh) | 2013-05-01 |
EP2336597A1 (en) | 2011-06-22 |
EP2336597B1 (en) | 2013-12-18 |
US20110031664A1 (en) | 2011-02-10 |
EP2336597A4 (en) | 2012-10-24 |
JP4792539B2 (ja) | 2011-10-12 |
CN102171484A (zh) | 2011-08-31 |
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