WO2014045533A1 - Ensemble cache anti-poussière pour véhicule et son procédé de fabrication - Google Patents

Ensemble cache anti-poussière pour véhicule et son procédé de fabrication Download PDF

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Publication number
WO2014045533A1
WO2014045533A1 PCT/JP2013/005237 JP2013005237W WO2014045533A1 WO 2014045533 A1 WO2014045533 A1 WO 2014045533A1 JP 2013005237 W JP2013005237 W JP 2013005237W WO 2014045533 A1 WO2014045533 A1 WO 2014045533A1
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WO
WIPO (PCT)
Prior art keywords
dust cover
bound stopper
metal fitting
outer metal
vehicle
Prior art date
Application number
PCT/JP2013/005237
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English (en)
Japanese (ja)
Inventor
加藤　賢一
Original Assignee
東海ゴム工業株式会社
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Filing date
Publication date
Application filed by 東海ゴム工業株式会社 filed Critical 東海ゴム工業株式会社
Publication of WO2014045533A1 publication Critical patent/WO2014045533A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/38—Covers for protection or appearance
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
    • 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
    • B60G2204/128—Damper mount 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B60G2204/4502—Stops limiting travel using resilient buffer

Definitions

  • the present invention relates to a dust cover assembly to be mounted on a shock absorber constituting a vehicle suspension mechanism and a method for manufacturing the dust cover assembly.
  • shock absorbers that make up the suspension mechanism of vehicles such as automobiles have been fitted with a dust cover that surrounds the piston rod in order to prevent foreign matter such as rainwater and dust from entering the sliding portion of the piston rod.
  • a bound stopper formed of an elastic body is externally inserted into the piston rod.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-3973
  • the dust cover and the bound stopper formed separately are provided as an upper support for attaching the piston rod of the shock absorber to the vehicle body as described in, for example, Japanese Patent Application Laid-Open No. 2002-130359 (Patent Document 2). It is assembled against. Specifically, the outer metal fitting of the upper support fixed to the vehicle body is used as a cup-shaped press-molded product, and a bound stopper is fitted and held on the inner surface of the outer wall of the outer metal fitting. It is assembled by being fitted and fixed to the outer surface of the peripheral wall of the metal fitting.
  • the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the dust cover and the bound stopper formed separately can be easily assembled to the upper support and the assembled state is It is an object of the present invention to provide a vehicle dust cover assembly having a novel structure and a novel manufacturing method of the vehicle dust cover assembly that can be stably maintained.
  • a vehicle dust cover assembly in which a bound stopper and a dust cover are assembled to an upper support for attaching a shock absorber to a vehicle body.
  • the outer cover is fixed to the vehicle body at the upper support while the upper end portion of the dust cover that is externally fitted to the upper end portion of the bound stopper is also superimposed on the engagement step.
  • a fitting recess is formed in which the upper end portion of the bound stopper is fitted and assembled, and an engagement protrusion projecting on the inner surface of the fitting recess has the dust cover interposed therebetween.
  • the dust cover is not overlapped at the inner peripheral end portion of the engagement step, and is provided with an axial pushing operation surface exposed downward in the axial direction within the dust cover. .
  • the dust cover is fitted on the bound stopper and is fitted into the fitting recess of the outer metal fitting together with the bound stopper. Then, when the dust cover is sandwiched between the engaging step between the engaging step of the bound stopper and the engaging protrusion of the outer metal fitting, the dust cover is held against the outer metal fitting together with the bound stopper.
  • the part where the dust cover is attached to the outer metal fitting is positioned in the fitting recess, and exposure to the outer peripheral surface of the outer metal fitting is avoided. Is done. Moreover, regardless of the outer peripheral shape of the outer metal fitting, the dust cover can be assembled to the outer metal fitting, and the degree of freedom in designing the outer metal fitting is greatly improved.
  • the bounce stopper with the dust cover superimposed on the outer peripheral surface has a push-in operation surface at the inner peripheral end of the engagement step, and pushes the external force to fit the bounce stopper into the fitting recess. Can affect the surface. Accordingly, the bound stopper with the dust cover fitted outside can be easily fitted into the fitting recess and assembled to the outer metal fitting without being obstructed by the dust cover.
  • the dust cover assembly for a vehicle wherein the upper surface of the engagement protrusion of the outer metal fitting is the surface of the bound stopper. While the engagement surface is overlapped with the engagement step across the dust cover, the surface below the top is a tapered guide surface that gradually spreads downward. is there.
  • an external force is applied to the pushing operation surface of the bound stopper, and the outer stopper is formed in the outer fitting when the bound stopper is fitted into the fitting recess of the outer fitting.
  • a dust cover assembly for a vehicle wherein the fitting recess of the outer metal fitting has an inner circumference above the engagement protrusion.
  • a tapered contact surface gradually narrowing upward is provided on the surface, while the bound stopper has a tapered overlapping surface gradually narrowing upward on the outer peripheral surface above the engagement step.
  • the overlapping surface of the bound stopper is covered with the upper end portion of the dust cover, and is overlapped with the corresponding contact surface of the outer metal fitting with the dust cover interposed therebetween. is there.
  • the engagement step and the overlapping surface of the bound stopper are both sandwiched between the engagement cover and the contact surface of the outer metal fitting. It is overlapped in the axial direction. Accordingly, the bound stopper and the dust cover can be more reliably positioned and held on both sides in the axial direction with respect to the outer metal fitting in a state where the outer metal fitting is assembled to the fitting recess.
  • a fourth aspect of the present invention is a vehicle dust cover assembly according to any one of the first to third aspects, wherein the engagement step of the bound stopper and the engagement protrusion of the outer metal fitting All of these are formed over the entire circumference in the circumferential direction.
  • an appropriate number of engagement steps and engagement protrusions may be provided with a predetermined length on the circumference.
  • this aspect by forming the engagement step and the engagement protrusion over the entire circumference, it becomes possible to more effectively obtain the assembly holding force of the bound stopper and the dust cover in the outer metal fitting. .
  • the material of each member is not particularly limited.
  • the dust cover is fitted into the outer metal fitting and assembled, as described in Patent Document 2.
  • the present invention can be advantageously applied to a vehicle dust cover assembly including an outer metal fitting made of, for example, an aluminum alloy die-cast product, and an irregular outer peripheral surface shape can be easily applied to the outer metal fitting. It can be set.
  • the dust cover can be formed separately from the bound stopper, it is possible to adopt an elastomer dust cover in combination with a bound stopper made of an elastic material such as foamed rubber elastic body or foamed urethane. Accordingly, it is possible to more advantageously realize the weight reduction and durability improvement of the dust cover.
  • the present invention when fitting the upper end portion of the bound stopper that is extrapolated to the piston rod of the shock absorber into the fitting recess provided in the outer metal fitting of the upper support fixed to the vehicle body, (A) An engagement step provided on the outer peripheral surface is used as the bound stopper, and the bound stopper is retained in the fitting recess by being engaged with the engagement step. (B) A dust cover that covers the piston rod is externally fitted to the upper end portion of the bound stopper to form the engagement step. (C) the dust cover is not overlapped at the inner peripheral end portion of the engagement step of the bound stopper, and the dust cover is axially lowered in the dust cover.
  • a method for manufacturing a vehicle dust cover assembly is also a feature.
  • the bound stopper to which the dust cover is attached is attached to the pushing operation surface exposed in the axial direction.
  • the assembly portion of the dust cover is protected by the outer metal fitting to prevent damage, and the outer peripheral shape of the outer metal fitting is largely free of design.
  • the dust cover is fitted and held in the fitting recess of the outer metal fitting together with the bound stopper, so that the assembly portion of the dust cover is protected by the outer metal fitting.
  • the bound stopper assembled with the dust cover superimposed on the outer peripheral surface can be easily fitted into the fitting recess of the outer metal fitting and assembled. It becomes possible to easily manufacture the dust cover assembly.
  • FIG. 4 is a longitudinal cross-sectional explanatory view showing a vehicle dust cover assembly according to an embodiment of the present invention, corresponding to the II cross section of FIG. 3.
  • FIG. 4 is a longitudinal sectional view of a bound stopper that constitutes the dust cover assembly shown in FIG. 1 and corresponds to a II-II section in FIG. 3.
  • the top view of the bound stopper shown by FIG. The longitudinal cross-sectional view of the dust cover which comprises the dust cover assembly
  • attachment state of the bound stopper shown by FIG. 2, and the dust cover shown by FIG. FIG. 2 is a longitudinal sectional explanatory view showing an upper metal fitting for upper support that constitutes the dust cover assembly shown in FIG. 1.
  • FIG. 1 shows a dust cover assembly 10 for a vehicle as an embodiment of the present invention.
  • the dust cover assembly 10 according to the present embodiment is attached to a portion where the shock absorber 12 constituting the suspension mechanism of the automobile is attached to the vehicle body 14, and is extrapolated to the piston rod 16 of the shock absorber 12.
  • the bounce stopper 18 and the dust cover 20 are included.
  • the vertical direction means, in principle, the vertical direction in FIG. 1 that is the axial direction.
  • the bound stopper 18 is formed of a thick, substantially cylindrical elastic body having a center hole 22, and has various elasticity.
  • it is made of a foamable urethane resin.
  • the bound stopper 18 is tapered so that the outer peripheral surface has a smaller diameter toward the lower side, and the wall thickness is gradually reduced toward the lower side in the axial direction.
  • annular concave grooves extending in the circumferential direction are alternately formed on the inner and outer peripheral surfaces below the intermediate portion in the axial direction to form a bellows structure as a whole, and buckling during axial compression deformation is achieved. It is prevented and the expansion and contraction deformation in the axial direction is stably generated.
  • a thick protrusion 24 that protrudes on the outer peripheral surface is integrally formed at the upper end portion of the bound stopper 18.
  • thick protrusions 24 are formed at four locations located at equal intervals in the circumferential direction.
  • the lower surface of the thick protrusion 24 is an engagement step 26 that extends from the outer peripheral surface of the bound stopper 18 in a direction substantially perpendicular to the axis.
  • the upper surface of the thick protrusion 24, that is, the outer peripheral surface above the engagement step 26 is an overlapping surface 28 having a curved taper shape that gradually decreases in diameter upward.
  • An annular step 30 is formed on the upper end surface of the bound stopper 18 in the middle portion in the radial direction, and a stepped shape with the outer peripheral side slightly lower in the axial direction than the inner peripheral side from the annular step 30. It is the end face.
  • the upper end surface of the bound stopper 18 is formed with a communication groove 32 extending in the radial direction from the inner peripheral end to the outer peripheral end at an appropriate number of locations on the circumference (two locations in this embodiment). Further, the outer peripheral end of the communication groove 32 extends continuously downward in the axial direction at a circumferential position away from the thick protrusion 24. Even when the lower end opening of the bound stopper 18 is covered with the shock absorber 12, air supply / exhaust is allowed through the communication groove 32 inside and outside the bound stopper 18.
  • the dust cover 20 has a thin, generally cylindrical shape extending in the vertical direction as a whole, and is composed of a synthetic resin material, a rubber elastic body, or a synthetic resin and a rubber elastic body. It is formed of a composite material.
  • the material of the dust cover 20 is not particularly limited.
  • thermoplastic synthetic resins such as polypropylene, polyethylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, polyamide, polyester, polycarbonate, polyacetal, and cellulose acetate.
  • thermoplastic vulcanized elastomers such as vulcanized alloys of polypropylene and ethylene propylene rubber are preferably used.
  • an olefin thermoplastic elastomer is employed as the material of the dust cover 20.
  • the dust cover 20 of the present embodiment includes a main body portion 34 that extends in the axial direction with a substantially constant inner and outer diameter, and a mounting portion 36 that is slightly smaller in diameter than the main body portion 34 and extends upward from the upper end of the main body portion 34. It is comprised including.
  • a bellows portion 38 having a bellows-cylindrical shape by alternately connecting a plurality of annular convex portions and annular concave portions is formed in an intermediate portion in the axial direction of the main body portion 34. The bellows portion 38 improves the flexibility and stretchability of the dust cover 20.
  • the mounting portion 36 is a portion that is overlapped with the outer peripheral surface of the bound stopper 18 and assembled in an externally fitted state, and includes a tapered portion 40 that gradually decreases in diameter from the upper end of the main body portion 34, and the tapered portion 40.
  • a ring-shaped lower locking portion 42 extending radially outward from the upper end, and a curved taper extending upward from the outer peripheral end of the lower locking portion 42 and the upper end gradually becoming smaller in diameter and narrowing It is comprised from the cylindrical upper side latching
  • the lower locking portion 42 of the mounting portion 36 has an inner diameter dimension larger than the inner diameter dimension of the engagement step 26 of the bound stopper 18 by a predetermined dimension: ⁇ . Further, the inner peripheral surface shape of the upper locking portion 44 is formed with a shape corresponding to the outer peripheral surface shape of the thick protrusion 24 of the bound stopper 18.
  • the upper end portion of the dust cover 20 is attached to the upper end portion where the thick protrusion 24 of the bound stopper 18 is formed by extrapolating the dust cover 20 from above the bound stopper 18.
  • the attachment part 36 that is can be fitted and assembled. Under such an assembled state, the lower locking portion 42 of the dust cover 20 is overlapped with the engaging step 26 of the thick protrusion 24 of the bound stopper 18 and the thick protrusion 24 of the bound stopper 18 is overlapped.
  • the mating surface 28 is covered with and overlapped with the inner surface of the upper locking portion 44 of the dust cover 20.
  • the dust cover 20 is combined with the thick protrusion 24 of the bound stopper 18 so as to be sandwiched from both sides in the axial direction, and is positioned in the axial direction. Further, the inner surface of the attachment portion 36 of the dust cover 20 is overlapped with the outer peripheral surface of the thick protrusion 24 of the bound stopper 18 and is positioned in the direction perpendicular to each other.
  • the dust cover 20 superimposed on the upper end surface of the bound stopper 18 is superimposed on the outer peripheral side of the annular step 30, thereby positioning the upper end surface of the bound stopper 18 and the upper end surface of the dust cover 20.
  • the communication groove 32 formed on the surface of the upper end portion of the bound stopper 18 is maintained in the communication state even when the dust cover 20 is assembled.
  • the thick protrusions 24 of the bound stopper 18 fitted to the dust cover 20 are formed discontinuously on the circumference, so that the bound stopper with respect to the upper end portion of the dust cover 20. Eighteen thick projections 24 can be easily fitted.
  • the inner diameter dimension of the main body portion 34 of the dust cover 20 is sufficiently larger than the outer diameter dimension of the bound stopper 18.
  • the space secured on the outer periphery of the bound stopper 18 in the dust cover 20 reduces interference with the dust cover 20 when the bound stopper 18 is axially compressed and deformed.
  • the inner diameter dimension of the engagement step 26 of the bound stopper 18 is set to be smaller than the inner diameter dimension of the lower locking portion 42 of the dust cover 20 by ⁇ . Have portions that are not superimposed.
  • An axial pushing operation surface 46 exposed axially downward in the dust cover 20 at the inner peripheral end portion of the engagement step 26 extends in the circumferential direction with a dimension of ⁇ in the radial direction. It has been.
  • the bound body 48 of the bound stopper 18 and the dust cover 20 thus assembled on the same central axis in this way is assembled to the outer metal fitting 52 of the upper support 50 as shown in FIG. ing.
  • the upper support 50 is attached to an attachment site of the piston rod 16 projecting upward from the cylinder 54 in the shock absorber 12 with respect to the vehicle body 14.
  • the bound stopper 18 and the dust cover 20 are assembled in an extrapolated state with respect to the piston rod 16 projecting downward from the upper support 50.
  • the inner metal fitting 56 and the outer metal fitting 52 arranged on the outer peripheral side thereof are the main rubber elastic body 58. It has an elastically connected structure.
  • the inner metal fitting 56 is attached so that the upper end of the piston rod 16 of the shock absorber 12 is bolted, and has a thick plate shape extending in the direction perpendicular to the axis.
  • the outer metal fitting 52 has a hollow structure including a central insertion hole 60 through which the piston rod 16 is inserted, and a flange-like fixing portion 62 that is overlapped with the vehicle body 14 and is bolted to the outer peripheral surface. It spreads outward and is integrally formed.
  • the outer metal fitting 52 is provided with upper and lower support portions 64 and 66 that are opposed to the outer peripheral portion of the inner metal fitting 56 on both sides in the axial direction.
  • a main rubber elastic body 58 is mutually elastically connected by a main rubber elastic body 58.
  • the radially opposing surfaces of the inner metal fitting 56 and the outer metal fitting 52 are also elastically connected by the main rubber elastic body 58.
  • a press-fit cylinder fitting 68 is vulcanized and bonded to the outer peripheral surface of the main rubber elastic body 58, and the press-fit cylinder fitting 68 is press-fitted and fixed to the outer fitting 52.
  • the upper support portion 64 of the outer metal fitting 52 is formed separately in an annular plate shape, and is fixed by caulking to the upper end opening of the outer metal fitting 52.
  • the outer metal fitting 52 in the upper support 50 is not limited at all, in this embodiment, the outer metal fitting 52 is a die-cast product of an aluminum alloy. Thereby, while ensuring sufficient intensity
  • the outer metal fitting 52 is bolted to the vehicle body 14 so that the piston rod 16 bolted to the inner metal fitting 56 is attached to the vehicle body 14 in an anti-vibration manner via the upper support 50. It has become.
  • the outer metal fitting 52 has an upper end portion of the bound stopper 18 to which the dust cover 20 is externally fitted by a peripheral wall portion extending axially below the lower support portion 66.
  • a fitting recess 70 to be fitted and assembled is formed to open downward in the axial direction.
  • the inner surface of the fitting recess 70 is formed with a shape corresponding to the surface shape of the upper end portion of the bound stopper 18 to which the dust cover 20 is fitted.
  • an engagement protrusion 72 extending in the circumferential direction in the axially intermediate portion is provided in an annular shape extending over the entire circumference in this embodiment.
  • the engaging protrusion 72 has a substantially triangular cross section, and the surface above the protruding top portion serving as the inner peripheral end is an annular engaging surface 74 that extends in a direction substantially perpendicular to the axis.
  • the surface below the projecting top is a tapered guide surface 76 that gradually increases in diameter downward.
  • the inner peripheral surface above the engaging protrusion 72 of the fitting recess 70 is a curved tapered contact surface 78 that gradually narrows upward.
  • the upper end portion of the bound stopper 18 to which the dust cover 20 is externally fitted is fitted into the fitting recess 70 from below in the axial direction, as shown in FIG.
  • the upper end portion is fitted into the fitting recess 70 and assembled.
  • the engaging step 26 of the thick protrusion 24 of the bound stopper 18 is overlapped with and engaged with the engaging surface 74 of the engaging protrusion 72 of the outer metal fitting 52, and the bound stopper 18.
  • the overlapping surface 28 of the thick protrusion 24 is overlapped and engaged with the contact surface 78 of the fitting recess 70 of the outer metal fitting 52.
  • the dust cover 20 is sandwiched and held between the overlapping surfaces of the bound stopper 18 and the outer metal fitting 52.
  • the outer metal fitting 52 is attached so as to sandwich the thick protrusion 24 of the bound stopper 18 to which the dust cover 20 is fitted from both sides in the axial direction, and they are positioned in the axial direction and the direction perpendicular to the axis. In other words, the bound stopper 18 and the dust cover 20 are held out against the outer metal fitting 52.
  • the engaging step 26 of the bound stopper 18 is provided with a pressing operation surface 46 that is not covered with the dust cover 20 and exposed downward in the axial direction, so that it is inserted into the dust cover 20 from below.
  • a jig that is pressed against the pushing operation surface 46, an axial assembly external force can be directly applied to the pushing operation surface 46 of the bound stopper 18. Therefore, the fitting body 48 of the bound stopper 18 and the dust cover 20 can be easily and quickly pushed into the fitting recess 70 of the outer metal fitting 52 and assembled.
  • a tapered guide surface 76 is formed, and the upper end portion of the bound stopper 18 covered with the dust cover 20 is smoothly guided to the fitting recess 70 so as to slide.
  • the overlapping surface 28 that is the upper end surface of the bound stopper 18 and the guide surface 76 are both tapered, when the fitting body 48 is assembled to the outer metal fitting 52, the overlapping surface 28 and It can be avoided that the guide surfaces 76 are pressed against each other in the axial direction. That is, the both surfaces 28 and 76 are inclined with respect to the axial direction and are subjected to an external force in the opposite direction. It slips into the interior of the place 70.
  • a part where the dust cover 20 is assembled to the outer metal fitting 52 that is, a fitting recess 70 of the outer metal fitting 52 into which the upper end portion of the dust cover 20 is inserted is an outer metal fitting. 52 is covered and protected. Thereby, the damage of the assembly part by a jumping stone, etc. can be prevented, and the possibility of the dust cover 20 falling off can be reduced.
  • the bound stopper 18, the dust cover 20, and the outer metal fitting 52 can be easily assembled. That is, in this embodiment, a soft olefin-based thermoplastic elastomer is employed as the material of the dust cover 20.
  • the bound stopper 18 and the dust cover 20 are separately formed by foam molding and blow molding. Prepared. Thereafter, the front end portion of the bound stopper 18 is press-fitted into the front end portion of the dust cover 20 and overlapped to form the fitting body 48. And the dust cover assembly
  • the dust cover 20 is soft and press-fit and assembled into the outer metal fitting 52, so that it is necessary to set the large outer metal fitting 52 in the mold when the dust cover assembly 10 is manufactured. Therefore, the manufacturing cost can be reduced. Further, by making the dust cover 20 soft, when the bound stopper 18 is press-fitted into the dust cover 20, the dust cover 20 can be compressed and the bound stopper 18 can be assembled. Thereby, the bound stopper 18 and the dust cover 20 can be easily assembled.
  • the bellows portion 38 is provided in the main body portion 34 of the dust cover 20, so that flexibility and stretchability are improved, and the bound stopper 18 and the dust cover 20 are further assembled. Can be easy.
  • the parts where the bound stopper 18, the dust cover 20 and the outer metal fitting 52 come into contact with each other that is, the overlapping surface 28 and the tapered portion 40, and the upper locking portion 44 and the guide surface 76 are tapered. ing. Thereby, the external force for a fitting can be suppressed and an assembly
  • a push operation surface 46 is provided at the inner peripheral end of the engagement step 26. From this, assembly can be performed more easily by pushing the fitting body 48 of the bound stopper 18 and the dust cover 20 into the fitting recess 70 using a member that can be pushed from below the pushing operation surface 46. .
  • the bound stopper 18 and the dust cover 20 are positioned and fixed to each other.
  • the attachment portion 36 of the dust cover 20 is covered with the fitting recess 70 of the outer metal fitting 52, so that the dust cover 20 and the outer metal fitting 52 are positioned and fixed to each other.
  • the dust cover assembly 10 of the present embodiment is very easy to assemble and has a structure in which each part is difficult to be removed, thereby reducing manufacturing costs and high productivity. It is possible to achieve both.
  • the shape of the thick protrusion 24 in the bound stopper 18 and the shape of the engagement protrusion 72 in the outer metal fitting 52 are not limited to the shapes shown in the drawing, and may be, for example, a hemisphere.
  • the shape of the attachment part 36 in the dust cover 20 covering the thick protrusion 24 and the shape of the taper part 40 and the lower locking part 42 in the dust cover 20 engaged with the engagement protrusion 72 are thick.
  • a shape corresponding to the meat protrusion 24 and the engagement protrusion 72 is preferable.
  • the thick projection 24 was provided in four places at equal intervals on the periphery of the upper end part of the bound stopper 18,
  • the number of thick protrusions provided on the circumference is not limited in any way, and the intervals provided may be non-uniform.
  • the thick protrusion may be provided over the entire circumference of the upper end portion of the bound stopper 18.
  • the engagement step is provided over the entire circumference of the upper end portion of the bound stopper 18, and similarly, the lower locking portion 42 of the dust cover 20 and the outer metal fitting 52 provided over the entire circumference. Due to the engagement action with the engagement protrusion 72, the downward stopper of the bound stopper 18 can be more effectively prevented.
  • the engagement protrusion 72 provided on the outer metal fitting 52 does not need to be provided over the entire circumference, and the engagement protrusion 72 is partially provided in the circumferential direction on the inner surface of the fitting recess 70. Also good. Further, the tapered portion 40 and the lower locking portion 42 that engage with the engaging protrusion 72 do not need to be provided over the entire circumference. For example, they are provided at positions corresponding to the engaging protrusion 72 in the circumferential direction. May be. Thereby, the external force required for the assembly of the fitting body 48 to the outer metal fitting 52 can be suppressed, and the assembly can be further facilitated.
  • the dust cover 20 is soft, but may be formed of a hard synthetic resin such as polypropylene.
  • the dust cover 20 may be partially made hard, for example, the attachment portion 36 of the dust cover 20 is made soft and the main body portion 34 is made hard.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

La présente invention concerne un ensemble cache anti-poussière pour véhicule qui rend possible un assemblage facile d'un cache anti-poussière et d'un dispositif anti-rebond formés séparément sur un support supérieur, et une nouvelle structure permettant le maintien stable de leur état assemblé. L'invention concerne donc un ensemble cache anti-poussière (10) pour véhicule selon lequel : un dispositif anti-rebond (18) est doté d'un étage de coopération (26) ; un cache anti-poussière (20) emboîté sur le dispositif anti-rebond (18) chevauche l'étage de coopération (26) ; dans le même temps, un évidement de coopération (70) dans lequel le dispositif anti-rebond (18) est ajusté et assemblé est formé dans une garniture métallique extérieure (52) d'un support supérieur (50) ; le dispositif anti-rebond (18) et le cache anti-poussière (20) sont maintenus de façon à ne pas pouvoir se retirer de la garniture métallique extérieure (52), du fait de la prise en sandwich du cache anti-poussière (20) et de la coopération d'une saillie de coopération (72) qui fait saillie de la surface de coopération (70) avec l'étage de coopération (26) ; et l'étage de coopération (26) est doté d'une surface fonctionnelle de poussée (46) que le cache anti-poussière (20) ne recouvre pas.
PCT/JP2013/005237 2012-09-20 2013-09-04 Ensemble cache anti-poussière pour véhicule et son procédé de fabrication WO2014045533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-206603 2012-09-20
JP2012206603A JP5916574B2 (ja) 2012-09-20 2012-09-20 車両用ダストカバー組付体およびその製造方法

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Publication Number Publication Date
WO2014045533A1 true WO2014045533A1 (fr) 2014-03-27

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CN107580560A (zh) * 2015-03-18 2018-01-12 奇卡胶公司 车辆悬架的减震器组件和悬架系统
US20220235844A1 (en) * 2021-01-28 2022-07-28 Mando Corporation Cover cap and insulator for shock absorber including the same

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JP5766836B1 (ja) * 2014-03-12 2015-08-19 住友理工株式会社 車両用ダストカバー組付体およびその製造方法
JP2017180542A (ja) * 2016-03-28 2017-10-05 株式会社ショーワ ダストカバー、操舵装置、及びダンパ
JP7145114B2 (ja) * 2019-03-26 2022-09-30 株式会社Subaru サスペンション装置
JP7480598B2 (ja) 2020-06-08 2024-05-10 スズキ株式会社 車両用ストラット式サスペンション

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JPH06137357A (ja) * 1992-10-30 1994-05-17 Bridgestone Corp バンパーバウンドとダストカバーとの組立構造
JPH08121525A (ja) * 1994-10-21 1996-05-14 Nippon Mektron Ltd バンプストッパ−装置
JP2006069461A (ja) * 2004-09-06 2006-03-16 Honda Motor Co Ltd サスペンション装置用ダンパーの組付方法

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JPH06137357A (ja) * 1992-10-30 1994-05-17 Bridgestone Corp バンパーバウンドとダストカバーとの組立構造
JPH08121525A (ja) * 1994-10-21 1996-05-14 Nippon Mektron Ltd バンプストッパ−装置
JP2006069461A (ja) * 2004-09-06 2006-03-16 Honda Motor Co Ltd サスペンション装置用ダンパーの組付方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107580560A (zh) * 2015-03-18 2018-01-12 奇卡胶公司 车辆悬架的减震器组件和悬架系统
US20220235844A1 (en) * 2021-01-28 2022-07-28 Mando Corporation Cover cap and insulator for shock absorber including the same

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