WO2016159283A1 - Palier de butée pour véhicules - Google Patents

Palier de butée pour véhicules Download PDF

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Publication number
WO2016159283A1
WO2016159283A1 PCT/JP2016/060767 JP2016060767W WO2016159283A1 WO 2016159283 A1 WO2016159283 A1 WO 2016159283A1 JP 2016060767 W JP2016060767 W JP 2016060767W WO 2016159283 A1 WO2016159283 A1 WO 2016159283A1
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WO
WIPO (PCT)
Prior art keywords
annular
case
upper case
lower case
vehicle
Prior art date
Application number
PCT/JP2016/060767
Other languages
English (en)
Japanese (ja)
Inventor
山田　智博
Original Assignee
オイレス工業株式会社
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Filing date
Publication date
Application filed by オイレス工業株式会社 filed Critical オイレス工業株式会社
Publication of WO2016159283A1 publication Critical patent/WO2016159283A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
    • B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips

Definitions

  • the present invention relates to a thrust bearing for a vehicle having an upper case and a lower case and relatively rotating, and more particularly, a strut type suspension (McPherson type) thrust bearing and an air suspension thrust bearing in a four-wheeled vehicle.
  • the present invention relates to a thrust bearing for a vehicle incorporated in a vehicle.
  • the lower case made of synthetic resin which is overlapped in a rotatable manner and has an annular upper surface
  • the upper case is disposed between the annular lower surface of the upper case and the annular upper surface of the lower case.
  • the sliding bearing piece made of synthetic resin that contacts the lower surface of the lower case with the lower surface of the lower case and the lower surface of the upper case there is known a sliding bearing provided with an annular elastic seal member disposed on the outer periphery of the lower case and fixed so as to cover an annular cored bar having an L-shaped cross section (example) If, Patent Document 1).
  • JP 2012-097904 A (refer to FIG. 2, FIG. 5, FIG. 6 in particular)
  • the conventional sliding bearing described above has a structure in which the sealing member has an annular cored bar, there is a problem that the weight is heavy, or the rigidity is insufficient if only an elastic sealing member such as rubber is used without an annular cored bar. As a result, the assembly becomes difficult and the sealing performance may be insufficient.
  • the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to reduce the weight and provide rigidity without an annular cored bar and facilitate assembly. It is another object of the present invention to provide a vehicle thrust bearing having a seal member that ensures sealing performance.
  • the invention according to claim 1 includes an annular upper case that comes into contact with the vehicle body side mounting portion, and an annular lower case that overlaps with the upper case so as to be rotatable relative to each other, and the upper case and the lower case,
  • a thrust bearing for a vehicle that supports a thrust load at a contact location where direct contact or indirect contact is made, it is installed between the upper case and the lower case, and the contact location is located on the case outer peripheral side or the case inner peripheral side.
  • An annular seal elastic member to be sealed includes an annular inner peripheral base installed in one of the upper case and the lower case, and the other of the upper case and the lower case extending from the annular inner peripheral base to the case outer peripheral side.
  • the annular seal elastic member has the plurality of lip portions before elastic deformation of the other lip portion.
  • overlap portion refers to a portion where the shape before elastic deformation of the plurality of annular lip portions overlaps with the other case.
  • the overlap portion is arranged along the clearance path between the upper case and the lower case.
  • the overlap portion is arranged along the clearance path between the upper case and the lower case.
  • the invention according to claim 6 is formed on the seal inner peripheral side of the annular inner peripheral base in addition to the configuration of the vehicle thrust bearing according to any one of the first to fifth aspects.
  • the annular ridge is in elastic contact with the upper case or the lower case, thereby further solving the above-described problems.
  • the lower case is a piston used for a shock absorber of a vehicle suspension.
  • the above-described problem is further solved by overlapping the upper case around the axis of the rod so as to be relatively rotatable and supporting a load from a damper coil spring of the suspension.
  • the thrust bearing for a vehicle includes an annular upper case that abuts on the vehicle body side mounting portion and an annular lower case that overlaps with the upper case so as to be rotatable relative to the upper case. Not only can smooth relative rotation with the case be realized, but also the following specific effects can be achieved.
  • the annular seal elastic member that is installed between the upper case and the lower case and seals the contact portion on the case outer peripheral side or the case inner peripheral side is An annular inner peripheral base portion installed on one of the case and the lower case, and a plurality of annular lip portions extending from the annular inner peripheral base portion to the case outer peripheral side and coming into contact with the other of the upper case and the lower case.
  • a synthetic resin sliding bearing piece for supporting the thrust load is provided between the upper case and the lower case. Since the frictional resistance between the upper case and the lower case is reduced by being installed in the annular space formed between them, the relative rotation between the upper case and the lower case is made smoother. Can do.
  • the annular seal elastic member has a plurality of lip portions before elastic deformation of the other lip portion. Since it has a more reliable multi-stage seal structure by having the overlap part which contacts the case and elastically deforms, it is possible to reduce the momentum of muddy water or the like to enter at once or in stages.
  • the overlap portion is a contact point along the clearance path between the upper case and the lower case.
  • the overlap portion is a contact location along the clearance path between the upper case and the lower case. Since the sealing performance of the inlet side seal is the highest in the multi-stage seal structure, the first seal surely weakens the momentum such as muddy water. Even when muddy water or the like passes through the seal, intrusion of muddy water or the like that has lost its momentum can be reliably prevented by the second and subsequent seals.
  • the thrust bearing for vehicles of the invention concerning Claim 6 in addition to the effect which the invention concerning any one of Claims 1 thru / or 5 shows, it forms in the seal inner circumference side of a ring inner circumference side base. Since the annular ridge is elastically in contact with the upper case or the lower case, the annular ridge serves as a tightening allowance, so that it can be sealed without any gap between the annular inner peripheral base and one side. it can.
  • the lower case is used for a shock absorber of a vehicle suspension.
  • the annular seal elastic member can be connected to the upper case and the lower case in response to the eccentric load. Therefore, even if the lower case is slightly inclined with respect to the upper case due to an offset load applied to the lower case, the lower case can be reliably sealed.
  • FIG. 1 is a partially sectional perspective view of a thrust sliding bearing for a vehicle that is a first embodiment of the present invention.
  • 1 is an exploded perspective view of a thrust sliding bearing for a vehicle that is a first embodiment of the present invention.
  • symbol 3 shown in FIG. FIG. 4 is a sectional view taken along the line 4-4 shown in FIG.
  • the present invention includes an annular upper case that comes into contact with the vehicle body-side mounting portion, and an annular lower case that overlaps with the upper case so that the upper case and the lower case are directly or indirectly connected.
  • an annular seal elastic member that is installed between the upper case and the lower case and seals the contact point on the case outer peripheral side or the case inner peripheral side is
  • An annular inner peripheral base portion installed on one of the case and the lower case, and a plurality of annular lip portions extending from the annular inner peripheral base portion to the case outer peripheral side and coming into contact with the other of the upper case and the lower case Therefore, any specific embodiment can be used as long as it can be assembled without an annular metal core and can secure sufficient sealing performance even when an unbalanced load occurs. There is no matter.
  • a vehicle thrust bearing may be provided with a bearing piece that supports a thrust load by being interposed in an annular space formed between an upper case and a lower case, or may be provided with an upper case without a bearing piece.
  • the lower case may slide directly.
  • the bearing piece may be a sliding bearing piece that slides with respect to the upper case or the lower case, or may be a rolling bearing piece that holds a rolling element such as a ball so as to roll freely.
  • the vehicle suspension may be of any structure as long as a thrust load is applied.
  • the upper case only needs to be in contact with the vehicle body side mounting portion, and the strut type suspension as an example of the suspension is a type in which the upper end portion of the shock absorber piston rod is fitted to the vehicle body side mounting portion. It may be any of the types fitted to the upper case.
  • the elastic material may be any material that can be elastically deformed, and may be any material such as rubber such as natural rubber or synthetic rubber, or resin such as elastomer or polyethylene.
  • FIG. 1 is a partially sectional perspective view of a vehicular thrust slide bearing 100 according to a first embodiment of the present invention
  • FIG. 2 is a vehicular thrust slide bearing 100 according to a first embodiment of the present invention
  • FIG. 3 is a plan view seen from the reference numeral 3 shown in FIG. 1
  • FIG. 4 is a cross-sectional view taken from the reference numeral 4-4 shown in FIG. 3
  • FIG. 6A and FIG. 6B are cross-sectional views in an unbalanced load state
  • FIG. 6A is a cross-sectional view in a state where a larger load is applied than in FIG. 6B.
  • a vehicular thrust slide bearing 100 includes an annular upper case 110 made of a synthetic resin, and an annular upper case 110 made of a synthetic resin.
  • a lower case 120 and an annular sliding bearing piece 130 made of synthetic resin as a bearing piece are provided.
  • the upper case 110 is configured to come into contact with a vehicle-side attachment member VA as a vehicle body-side attachment portion.
  • the upper case 110 includes an annular upper case base 111 attached to the vehicle side by forming an annular upper case upper surface 111a and an upper case lower surface 111b in the axial direction Y of the piston rod, and the upper case.
  • the inner peripheral side cylindrical portion 112 hanging from the inner peripheral end in the radial direction X of the base 111 and the outer peripheral side cylindrical portion 113 hanging from the outer peripheral end in the radial direction X of the upper case base 111 are integrally provided. .
  • the lower case 120 is configured to overlap with the upper case 110 so as to be rotatable around the axis AX of the piston rod.
  • the lower case 120 includes an annular lower case base 121 that is superposed on the upper case 110 so as to be rotatable about the axis AX with respect to the upper case 110, and a radially inner side of the lower case base 121.
  • Each has an inner peripheral cylindrical portion 122 that hangs down.
  • a base outer peripheral surface 121a is formed on the outer side in the radial direction of the lower case base 121.
  • the outer annular groove 121aa formed in the base outer peripheral surface 121a is formed only of synthetic rubber, which is an example of an elastic material described in detail later.
  • An annular seal elastic member 140 is installed.
  • An outer annular claw 113 a is formed on the outer cylindrical portion 113 of the upper case 110. Then, when the outer annular claw 113a abuts on the annular seal elastic member 140, the relative movement between the upper case 110 and the lower case 120 in the axial direction Y is restricted. That is, it is possible to prevent the upper case 110 and the lower case 120 from being separated from each other.
  • annular flange 121b is formed on the outer side in the radial direction from the base outer peripheral surface 121a, and the annular flange 121b is configured so that the inlet EN of the clearance path RO between the upper case 110 and the lower case 120 faces sideways. Has been. This makes it difficult for muddy water or the like generated from the lower side to the upper side to enter the gap route RO between the upper case 110 and the lower case 120.
  • an inner annular ridge 122 a is formed inside the inner peripheral cylindrical portion 122 of the lower case 120, and an inner annular ridge 122 a is formed at the lower end of the inner peripheral cylindrical portion 112 of the upper case 110. It is installed so as to mesh with the annular groove 112a with a slight gap.
  • the annular slide bearing piece 130 is configured to support a thrust load and a radial load that are loaded in an annular space formed between the upper case 110 and the lower case 120.
  • the annular sliding bearing piece 130 includes an annular space between the upper case lower surface 111 b of the upper case base 111 and the lower case upper surface 121 c of the lower case base 121 and the outer peripheral surface 112 b and the lower portion of the inner peripheral cylindrical portion 112. It is installed in an annular space between the inner peripheral surface 121 d of the case base 121.
  • the annular sliding bearing piece 130 includes an annular thrust sliding bearing piece portion 131, a cylindrical radial sliding bearing piece portion 132, and a bearing piece side rotation stop recessed portion 133 protruding downward from the thrust sliding bearing piece portion 131.
  • the thrust slide bearing piece 131 includes a bearing upper surface 131a that slidably contacts the upper case lower surface 111b of the upper case base 111, and a bearing lower surface 131b that contacts the lower case upper surface 121c of the lower case base 121 of the lower case 120. Have.
  • the radial sliding bearing piece 132 includes a bearing inner peripheral surface 132a that slidably contacts the outer peripheral surface 112b of the inner peripheral cylindrical portion 112 of the upper case 110, and an inner peripheral surface of the lower case base 121 of the lower case 120. It has a bearing outer peripheral surface 132b in contact with 121d. Further, the bearing piece side rotation stopping recess 133 engages with a bearing piece rotation stopping projection 123 formed on the inner peripheral surface 121 d of the lower case base 121, and restricts the rotation of the annular sliding bearing piece 130 relative to the lower case 120. .
  • the bearing piece side rotation stopping concave portion 133 and the bearing piece rotation stopping convex portion 123 are provided so that the annular sliding bearing piece 130 does not rotate with respect to the lower case 120, but these are not provided.
  • the annular slide bearing piece 130 may be configured to rotate with respect to the lower case 120.
  • a spring pad SP formed in an annular shape with rubber is installed on the lower case lower surface 121 e of the lower case base 121.
  • the vehicle thrust sliding bearing 100 abuts the upper case upper surface 111a of the upper case 110 against the vehicle side seating surface VA1 of the vehicle side mounting member VA as the body side mounting portion.
  • the spring pad SP is brought into contact with the upper end portion of the damper coil spring SS, and the vehicle thrust slide bearing 100 is installed between the vehicle side seating surface VA1 of the vehicle side mounting member VA and the damper coil spring SS, Incorporated.
  • the spring pad SP may be formed integrally with the lower case 120.
  • the annular seal elastic member 140 is formed only of an elastic material, and is between the inner peripheral surface 113b of the outer peripheral side cylindrical portion 113 of the upper case 110 and the base outer peripheral surface 121a of the lower case base 121 of the lower case 120. Is installed. Then, the contact location between the annular sliding bearing piece 130 and the upper case 110 and the contact location between the annular slide bearing piece 130 and the lower case 120, which are contact locations, are sealed on the case outer peripheral side as an example of the case outer peripheral side or the case inner peripheral side. It is configured to stop.
  • the annular seal elastic member 140 includes an annular inner peripheral base 141 installed in the outer annular groove 121aa of the base outer peripheral surface 121a of the lower case base 121 which is one of the upper case 110 and the lower case 120, and an annular inner peripheral side.
  • a first-stage annular lip portion 142 ⁇ / b> A that is a plurality of annular lip portions 142 that extend from the base portion 141 toward the outer peripheral side and abut against the inner peripheral surface 113 b of the outer cylindrical portion 113 of the upper case 110 that is the other of the upper case 110 and the lower case 120
  • the first-stage annular lip 142A to the fourth-stage annular lip 142D seal the gap path RO between the upper case 110 and the lower case 120.
  • the rigidity of the annular seal elastic member 140 itself is increased as compared with the rubber having the conventional structure. That is, it is assembled without an annular cored bar. Furthermore, it becomes a multi-stage seal structure, and the momentum such as muddy water to invade is reduced at once or in steps. That is, sufficient sealing performance is ensured.
  • both the side on which the load acts and the side on which the load acts are annular. At least some of the plurality of annular lip portions 142 of the seal elastic member 140 are in contact with the inner peripheral surface 113b of the outer peripheral side cylindrical portion 113 of the upper case 110 without a gap.
  • the shape of the first-stage annular lip portion 142A to the fourth-stage annular lip portion 142D before elastic deformation (the shape indicated by the one-dot chain line in FIG. 5) and the shape of the outer peripheral side cylindrical portion 113 of the upper case 110 are used.
  • the overlap portions OL1 to OL4 that overlap with the upper case 110 are sequentially provided in a large manner from the inlet EN toward the annular slide bearing piece 130 along the clearance path RO between the upper case 110 and the lower case 120.
  • the elastic deformation region of the first-stage annular lip portion 142A to the fourth-stage annular lip portion 142D that is disposed along the clearance path RO between the upper case 110 and the lower case 120 and contacts and interferes with the upper case 110.
  • Certain overlap portions OL1 to OL4 are sequentially provided larger toward the annular slide bearing piece 130 side.
  • the sealing performance increases stepwise toward the annular slide bearing piece 130 side. That is, even if muddy water passes through the first seal by the first-stage annular lip 142A, the second and subsequent seals by the second-stage annular lip 142B to the fourth-stage annular lip 142D are surely secured. Muddy water can be stopped.
  • annular ridge 141 a is formed on the seal inner peripheral side of the annular inner peripheral base 141.
  • the annular protrusion 141 a is in elastic contact with the outer annular groove 121 aa of the lower case 120.
  • the outer annular concave groove 121aa overlaps with the shape before elastic deformation.
  • the annular protrusion 141a becomes a fastening allowance. That is, the space between the annular inner peripheral base 141 and the lower case base 121 is sealed without a gap.
  • a vehicle thrust slide bearing 100 as a vehicle thrust bearing according to the first embodiment of the present invention thus obtained is installed between the upper case 110 and the lower case 120 and the annular slide bearing piece 130 is provided.
  • An annular seal elastic member 140 that seals the contact location on the outer periphery side of the case has an annular inner peripheral side base 141 installed on the lower case base 121 of the lower case 120 that is one of the upper case 110 and the lower case 120,
  • a first-stage ring as a plurality of annular lip portions 142 extending from the peripheral base portion 141 toward the outer peripheral side of the case and contacting the inner peripheral surface 113b of the outer peripheral cylindrical portion 113 of the upper case 110 which is the other of the upper case 110 and the lower case 120
  • the lip part 142A to the fourth-stage annular lip part 142D it can be assembled without an annular cored bar, and the load is offset. Even if produced can ensure sufficient sealing property.
  • the shape of the first-stage annular lip portion 142A to the fourth-stage annular lip portion 142D before the elastic deformation (the shape indicated by the one-dot chain line in FIG. 5) and the shape of the outer peripheral side cylindrical portion 113 of the upper case 110 are exceeded.
  • the overlap portions OL1 to OL4 to be wrapped are sequentially provided from the inlet EN toward the annular sliding bearing piece 130 along the gap path RO between the upper case 110 and the lower case 120, thereby providing one piece. Even when muddy water or the like passes through the first-stage annular lip 142A that is the seal of the eyes, the muddy water is surely secured by the second-stage annular lip 142B to the fourth-stage annular lip 142D that are the second and subsequent seals. Intrusion such as can be prevented.
  • annular protrusion 141a formed on the seal inner peripheral side of the annular inner peripheral base 141 is in elastic contact with the lower case base 121 of the lower case 120, which is one of the annular inner peripheral bases. 141 and the lower case base 121 of the lower case 120 can be sealed without a gap, and the effect is enormous.
  • FIG. 7A is an enlarged cross-sectional view of a main part of a vehicular thrust sliding bearing 200 according to a second embodiment of the present invention.
  • the vehicular thrust slide bearing 200 according to the second embodiment is obtained by changing the cross-sectional shape of the annular seal elastic member 140 of the vehicular thrust slide bearing 100 according to the first embodiment when viewed from the circumferential direction R. Is the same as the thrust sliding bearing for a vehicle 100 of the first embodiment, detailed description of common items is omitted, and only the reference numerals of the 200 series in which the lower two digits are common are attached.
  • the vehicle thrust sliding bearing 200 is provided with a first-stage annular lip portion 242A and a second-stage annular lip portion 242B as the annular lip portion 242.
  • the annular lip portion 242 does not necessarily extend only in the radial direction X orthogonal to the axial direction Y.
  • the first-stage annular lip portion 242A and the second-stage annular lip portion 242B before elastic deformation are formed to be inclined downward in the axial direction from the radially inner side to the outer side. Accordingly, when the upper case 210 and the lower case 220 are relatively assembled, the outer peripheral side cylindrical portion 213 of the upper case 210 abuts on the second-stage annular lip portion 242B and the second-stage annular lip portion 242B is inclined. Guided. That is, the relative assembly of the upper case 210 and the lower case 220 is facilitated.
  • FIG. 7B is an enlarged cross-sectional view of a main part of a vehicle thrust slide bearing 300 according to a third embodiment of the present invention.
  • the thrust thrust bearing 300 for a vehicle according to the third embodiment is obtained by changing the cross-sectional shape of the annular seal elastic member 140 of the thrust thrust bearing 100 for a vehicle according to the first embodiment when viewed from the circumferential direction R. Is the same as the thrust sliding bearing for a vehicle 100 of the first embodiment, detailed description of the common matters is omitted, and only the reference numbers in the 300 series are shared by the lower two digits.
  • the shapes of the first-stage annular lip portion 342A to the fourth-stage annular lip portion 342D before elastic deformation are formed from the inlet EN along the gap path RO between the upper case 310 and the lower case 320. Smaller ones are provided sequentially toward the annular slide bearing.
  • a first-stage annular lip portion as a plurality of annular lip portions 342 disposed along the clearance path RO between the upper case 310 and the lower case 320 and abutting and interfering with the outer peripheral side cylindrical portion 313 of the upper case 310.
  • Overlapping portions OL1 to OL4 which are elastic deformation regions of 342A to the fourth-stage annular lip portion 342D, are sequentially provided smaller toward the annular sliding bearing one side.
  • the sealing performance of the seal on the inlet EN side becomes the highest in the multi-stage seal structure.
  • the first seal by the first-stage annular lip 342A weakens the momentum of the muddy water and the muddy water passes through the first seal, the muddy water that has lost its momentum is in two stages.
  • the second and subsequent seals by the second annular lip 342D to the fourth annular lip 342D are securely stopped.
  • the thrust sliding bearing 300 for a vehicle according to the third embodiment of the present invention thus obtained has a shape before elastic deformation of the first-stage annular lip portion 342A to the fourth-stage annular lip portion 342D (one point in FIG. 7B).
  • Overlapping portions OL1 to OL4 that overlap the shape of the outer cylindrical portion 313 of the upper case 310 and the shape of the outer cylindrical portion 313 of the upper case 310 are formed from the inlet EN along the gap path RO between the upper case 310 and the lower case 320.
  • FIG. 8 is an enlarged cross-sectional view of a main part of a thrust sliding bearing 400 for a vehicle that is a fourth embodiment of the present invention.
  • the vehicle thrust slide bearing 400 according to the fourth embodiment is obtained by changing the cross-sectional shape of the annular seal elastic member 140 of the vehicle thrust slide bearing 100 according to the first embodiment when viewed from the circumferential direction R.
  • the detailed description of common items is omitted, and only the reference numerals in the 400s, which are common to the last two digits, are used.
  • the shapes of the first-stage annular lip portion 442A to the fourth-stage annular lip portion 442D before elastic deformation are provided so as to have the same shape when viewed from the circumferential direction R.
  • the annular seal elastic member 440 is installed between the upper case 410 and the lower case 420.
  • the rigidity of the annular seal elastic member 440 itself is increased as compared with the rubber of the conventional structure. That is, it is assembled without an annular cored bar. Furthermore, it becomes a multi-stage seal structure, and the momentum such as muddy water to invade is reduced at once or in steps. That is, sufficient sealing performance is ensured.
  • FIG. 9 is an enlarged sectional view of a thrust sliding bearing 500 for a vehicle that is a fifth embodiment of the present invention.
  • the annular seal elastic member 140 of the vehicle thrust slide bearing 100 of the first embodiment is installed not only on the case outer peripheral side but also on the case inner peripheral side from the annular slide bearing piece 130. Since many elements are common to the thrust sliding bearing 100 for the vehicle of the first embodiment, detailed explanations are omitted for the common matters, and only the reference numbers of the 500 series in which the last two digits are common are attached. To do.
  • an outer annular seal elastic member 540A and an inner annular seal elastic member 540B as an annular seal elastic member are connected to the lower case 520. It is installed between the upper case 510.
  • the outer annular seal elastic member 540A is the same as the annular seal elastic member 140 of the first embodiment described above, and is installed on the outer peripheral side of the case from the annular slide bearing piece 530.
  • a multi-stage seal structure is formed on the outer peripheral side of the annular sliding bearing piece 530 in the clearance path RO between the lower case 520 and the upper case 510, and the momentum of muddy water or the like to enter is reduced at once or in steps. It is.
  • the inner annular seal elastic member 540 ⁇ / b> B is installed closer to the inner periphery of the case than the annular sliding bearing piece 530. More specifically, the annular inner peripheral base portion 541B of the inner annular seal elastic member 540B is in elastic contact with the lower outer peripheral surface 512c of the inner peripheral cylindrical portion 512 of the upper case 510 and is an annular lip portion 542B. The eye-annular lip portion 542BA to the fourth-stage annular lip portion 542BD are in contact with the upper inner peripheral surface 522b of the inner peripheral side cylindrical portion 522 of the lower case 520 in an elastically deformed state.
  • a multi-stage seal structure is formed on the inner peripheral side of the case from the annular slide bearing piece 530 in the gap path RO between the lower case 520 and the upper case 510, and the momentum of muddy water or the like to enter is at once or stepwise. Reduced.
  • both the outer annular seal elastic member 540A and the inner annular seal elastic member 540B may be installed, or only one of them may be installed.
  • FIG. 10 is an enlarged cross-sectional view of a thrust sliding bearing 600 for a vehicle that is a sixth embodiment of the present invention.
  • the vehicle thrust slide bearing 600 of the sixth embodiment is obtained by changing the mounting location of the inner annular seal elastic member 540B of the vehicle thrust slide bearing 500 of the fifth embodiment from the upper case 510 side to the lower case 520 side. Since many elements are common to the thrust sliding bearing 500 for the vehicle according to the fifth embodiment, detailed description of common matters is omitted, and only the reference numerals of the 600 series having the lower two digits are attached.
  • the annular inner peripheral base portion 641 ⁇ / b> B of the inner annular seal elastic member 640 ⁇ / b> B is connected to the inner peripheral cylindrical portion 622 of the lower case 620.
  • the inner annular seal elastic member 640B may be configured to be attached to the lower case 620 side.
  • the outer annular seal elastic member 640A may be attached to the upper case 610 side.
  • Inner annular seal elastic member 141 ... (inner annular seal elastic member) annular inner peripheral base 141a ... annular ridge 142 ... annular lip part 542B, 642B ... (inner annular seal elastic member) annular lip part 142A, ... 442A ... 1st stage annular lip 542BA, 642BA ... 1st stage (of the inner annular seal elastic member) 442B ... Second stage annular lip part 542BB, 642BB ... Second stage annular lip part 142C (of inner annular seal elastic member) ... 442C ... Third stage annular lip part 542BC , 642BC (third inner ring seal elastic member) third stage annular lip 142D, ... 442D ...
  • fourth stage annular lip part 542BD, 642BD (fourth stage annular seal elastic member) Lip part AX ... Piston rod axis EN ... Inlet OL1 to OL4 ... Overlapping part (elastic deformation region) R ... Circumferential direction RO ... Gap path SS ... Damper coil spring SP ... Spring pad VA ... Vehicle side mounting member (vehicle body side mounting part) VA1 ... Vehicle side seating surface X ... Radial direction Y ... Axial direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

L'invention concerne un palier de butée pour véhicules comprenant un élément d'étanchéité qui ne dispose pas d'un noyau métallique annulaire et est donc léger, mais conserve sa rigidité, est facile à assembler et peut garantir des propriétés d'étanchéité. L'invention concerne un palier de butée pour véhicules (100), dans lequel un élément d'étanchéité élastique annulaire (140), qui est disposé entre un boîtier inférieur (120) et un boîtier supérieur (110) et qui scelle les points de contact sur le côté circonférentiel externe ou sur le côté circonférentiel interne du boîtier, comprend : une base circonférentielle intérieure annulaire (141) disposée sur un boîtier parmi le boîtier supérieur (110) et le boîtier inférieur (120) ; et une pluralité de parties formant lèvre annulaire (142A à 142D) qui s'étendent depuis la base circonférentielle intérieure annulaire (141) jusqu'au côté circonférentiel extérieur du boîtier et viennent en butée contre l'autre boîtier parmi le boîtier supérieur (110) et le boîtier inférieur (120).
PCT/JP2016/060767 2015-04-03 2016-03-31 Palier de butée pour véhicules WO2016159283A1 (fr)

Applications Claiming Priority (2)

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JP2015076825A JP2016196921A (ja) 2015-04-03 2015-04-03 車両用スラスト軸受
JP2015-076825 2015-04-03

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WO2016159283A1 true WO2016159283A1 (fr) 2016-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024068372A1 (fr) * 2022-09-30 2024-04-04 Igus Gmbh Palier lisse axial-radial, en particulier palier lisse axial-radial pour applications avec exigences d'hygiène

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527129Y1 (fr) * 1966-04-18 1970-10-21
JP2012172814A (ja) * 2011-02-23 2012-09-10 Oiles Corp 合成樹脂製のスラスト滑り軸受
JP2012255500A (ja) * 2011-06-09 2012-12-27 Oiles Corp 合成樹脂製の滑り軸受

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527129Y1 (fr) * 1966-04-18 1970-10-21
JP2012172814A (ja) * 2011-02-23 2012-09-10 Oiles Corp 合成樹脂製のスラスト滑り軸受
JP2012255500A (ja) * 2011-06-09 2012-12-27 Oiles Corp 合成樹脂製の滑り軸受

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024068372A1 (fr) * 2022-09-30 2024-04-04 Igus Gmbh Palier lisse axial-radial, en particulier palier lisse axial-radial pour applications avec exigences d'hygiène

Also Published As

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