WO2012093450A1 - スラスト滑り軸受及びこのスラスト滑り軸受を用いたストラット型サスペンションの取付構造 - Google Patents
スラスト滑り軸受及びこのスラスト滑り軸受を用いたストラット型サスペンションの取付構造 Download PDFInfo
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- WO2012093450A1 WO2012093450A1 PCT/JP2011/007110 JP2011007110W WO2012093450A1 WO 2012093450 A1 WO2012093450 A1 WO 2012093450A1 JP 2011007110 W JP2011007110 W JP 2011007110W WO 2012093450 A1 WO2012093450 A1 WO 2012093450A1
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- annular
- cylindrical
- flat plate
- hanging
- case
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
- B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
- B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
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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
- 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
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/18—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with floating brasses or brushing, rotatable at a reduced speed
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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
- 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
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- 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
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- 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
- B60G2204/418—Bearings, e.g. ball or roller bearings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/76—Polyolefins, e.g. polyproylene [PP]
- F16C2208/78—Polyethylene [PE], e.g. ultra-high molecular weight polyethylene [UHMWPE]
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/53—Spring-damper, e.g. gas springs
Definitions
- the present invention relates to a thrust slide bearing made of synthetic resin, particularly a thrust slide bearing suitable for being incorporated as a thrust slide bearing of a strut type suspension (McPherson type) in a four-wheeled vehicle, and a mounting structure of a strut type suspension using the thrust slide bearing About.
- a thrust slide bearing made of synthetic resin particularly a thrust slide bearing suitable for being incorporated as a thrust slide bearing of a strut type suspension (McPherson type) in a four-wheeled vehicle, and a mounting structure of a strut type suspension using the thrust slide bearing About.
- strut-type suspensions are mainly used for the front wheels of four-wheeled vehicles, and have a structure in which a coil spring is combined with a strut assembly in which a hydraulic shock absorber is incorporated in an outer cylinder integrated with a main shaft.
- a suspension includes (1) a structure in which the axis of the coil spring is positively offset with respect to the axis of the strut, and the piston rod of the shock absorber built in the strut smoothly slides.
- the axis of the coil spring is arranged on the same axis with respect to the axis of the strut.
- the bearing supports the vehicle body load (thrust load) and at the same time the radial load resulting from the suspension structure, that is, in the former structure, the axis of the coil spring is offset with respect to the axis of the strut. Even in the stationary state, the radial load caused by the restoring force of the coil spring in the axial direction of the strut, and in the latter structure, the strut axis and the coil spring axis are arranged on the same axis. The performance to smoothly allow the radial load caused by the misalignment caused by this is required.
- the present invention has been made in view of the above-mentioned points.
- the object of the present invention is to reduce the radial dimension by forming a radial sliding bearing portion in the upper and lower cases without using a radial sliding bearing.
- an object of the present invention is to provide a thrust slide bearing that can solve the problem of the installation space and also solve the economical problem.
- the thrust sliding bearing of the present invention comprises a synthetic resin lower case, a synthetic resin upper case superimposed on the lower case, and a synthetic resin thrust sliding bearing piece disposed between the upper and lower cases.
- the lower case has an annular upper surface, an annular lower surface, a cylindrical small-diameter inner surface, a cylindrical large-diameter inner surface and a cylindrical outer surface disposed between the annular upper surface and the annular lower surface, and a first annular member on the annular upper surface.
- An annular base portion having a recess, a small-diameter hole that is defined by the cylindrical small-diameter inner surface of the annular base portion and that opens at the annular lower surface of the annular base portion, and the cylindrical large-diameter of the annular base portion
- a large-diameter hole that is defined by the inner surface and opens at the annular upper surface of the annular base portion, and is connected to the cylindrical small-diameter inner surface at the annular inner peripheral end and is connected to the cylindrical large-diameter inner surface at the annular outer peripheral end.
- a cylindrical projection defining two annular recesses, and an annular engagement projection protruding radially outward from the cylindrical outer surface of the cylindrical projection, and the upper case includes an annular substrate portion And an inner cylindrical shape that is integrally provided on the cylindrical inner surface of the annular substrate portion so as to hang downward from the annular upper surface of the annular substrate portion and that defines a central hole concentric with the small-diameter hole on the cylindrical inner surface.
- the hanging portion is integrally provided on the cylindrical outer surface of the annular substrate portion so as to hang from the annular upper surface of the annular substrate portion and extend further downward than the annular lower end surface of the inner cylindrical hanging portion.
- a thick outer cylindrical hanging portion having a cylindrical inner surface, an annular lower surface of the annular substrate portion, and the inner cylindrical shape
- a third annular recess defined by the cylindrical outer surface of the lower cylindrical portion and the cylindrical inner surface of the outer cylindrical hanging portion; an inner cylindrical standing wall portion erected downward from the annular lower end surface of the outer cylindrical hanging portion;
- a fourth annular recess defined by an outer cylindrical standing wall portion, an annular lower end surface of the outer cylindrical hanging portion, a cylindrical outer surface of the inner cylindrical standing wall portion, and a cylindrical inner surface of the outer cylindrical standing wall portion; and an outer cylinder
- An annular engagement portion projecting downward from the annular lower end surface of the vertical wall portion, and an annular hook portion projecting radially inward from the cylindrical inner surface of the annular engagement portion.
- the annular upper surface is slidably brought into contact with the annular lower surface of the annular substrate portion defining the third annular recess, and is disposed on the third annular recess, while the annular lower surface is disposed on the first annular recess.
- the first annular recess is slidably brought into contact with the bottom of the annular recess of the annular base portion to be defined.
- the annular lower surface of the annular substrate portion of the upper case is separated from the annular upper surface of the annular base portion of the lower case.
- the cylindrical standing wall portion is disposed in the second annular recess, and the annular hook portion is elastically fitted to the annular engagement protrusion, and the elastic fitting portion and the outer cylindrical hanging portion are connected to the cylindrical inner surface.
- the inner cylindrical standing wall portion disposed in the second annular recess and the cylindrical projection portion disposed in the fourth annular recess and the annular engagement with the slidable contact portion of the cylindrical outer surface of the annular base portion Form a sealed part by labyrinth action with the mating protrusion and do not overlap the lower case .
- the relative rotation between the upper case and the lower case is such that, with respect to the thrust load direction, the annular upper surface and the upper portion of the thrust slide bearing piece disposed in the first and third annular recesses. Allowed by smooth sliding with the annular lower surface of the annular substrate portion of the case, and in the radial load direction, the cylindrical inner surface of the outer cylindrical hanging portion of the upper case and the cylindrical outer surface of the annular base portion of the lower case It is allowed by smooth sliding.
- the annular upper surface of the thrust slide bearing piece and the annular substrate of the upper case permitting smooth sliding of the relative rotation between the upper case and the lower case in the thrust load direction. Since the thrust slide bearing portion composed of the annular lower surface of the portion is positioned above the sealing portion by the labyrinth action and the annular upper surface of the lower case, dust from the inner and outer peripheral surfaces to the thrust slide bearing portion Intrusion of foreign matter such as the above is avoided as much as possible, and troubles such as abnormal wear of the thrust slide bearing due to the entry of the foreign matter can be avoided, and the upper case and the lower case with respect to the radial load direction can be avoided.
- the synthetic resin forming the thrust sliding bearing piece disposed between the upper case and the lower case is preferably self-lubricating, and the synthetic resin forming the upper case and the lower case is In addition, it is preferable to have excellent sliding strength such as wear resistance, impact resistance, creep resistance and mechanical strength such as rigidity.
- the upper case and the lower case are made of polyacetal resin, polyamide resin, It is preferably formed from a thermoplastic synthetic resin such as a polyester resin, and the thrust slide bearing piece is preferably formed from a polyethylene resin, a fluorine resin, or the like.
- a mounting structure for mounting a strut type suspension of a vehicle having a hydraulic shock absorber and a coil spring disposed surrounding the hydraulic shock absorber to the vehicle body via the thrust sliding bearing is a piston rod of a hydraulic shock absorber. And an upper spring receiving means for receiving a coil spring.
- the thrust slide bearing is disposed between the mounting means and the upper spring receiving means.
- a vehicle body mounting member having an annular flat plate-like portion fixed to the vehicle body side, a cylindrical projecting portion projecting downward from an annular inner edge of the annular flat plate-like portion and defining a through-hole on the inner peripheral surface;
- An attachment member having an annular flat plate portion integrally formed on the lower surface of the annular flat plate portion and a cylindrical hanging portion extending downward from an annular outer edge of the annular flat plate portion;
- the upper spring receiving means includes an annular flat plate-like portion, and an upper spring receiving member provided with a cylindrical protruding portion that protrudes upward from the annular inner edge of the annular flat plate-like portion and defines a through hole on the inner peripheral surface.
- the lower end surface of the cylindrical projecting portion of the vehicle body mounting member and the upper end surface of the cylindrical projecting portion of the upper spring receiving member are arranged to oppose each other, and the thrust slide bearing is a cylindrical projecting portion of the vehicle body mounting member.
- the annular plate portion of the upper case in the annular space formed by the annular flat plate portion of the attachment member, the cylindrical hanging portion of the attachment member, the annular flat plate portion of the upper spring receiving member, and the cylindrical protrusion of the upper spring receiving member.
- the inner cylindrical hanging portion of the mounting member is in contact with the outer surface of the cylindrical protruding portion of the vehicle body mounting member, the annular upper surface of the annular substrate portion of the upper case is in contact with the annular flat plate portion of the mounting member, and the cylindrical hanging portion of the mounting member is The outer peripheral surface of the outer cylindrical hanging part is the inner surface.
- the annular lower surface of the annular base portion of the lower case is in contact with the upper surface of the flat plate portion of the upper spring receiving member, and the cylindrical small inner surface of the annular base portion of the lower case is the cylindrical protrusion of the upper spring receiving member. It is enclosed and arranged on the inner surface.
- the strut assembly when the strut assembly is rotated by the steering operation, the lower case is rotated with respect to the upper case, and the rotation of the lower case is caused by the thrust slip disposed between the upper case and the lower case.
- the steering operation is performed smoothly.
- a bearing clearance (clearance) is maintained between the cylindrical inner surface of the outer cylindrical hanging portion of the annular substrate portion of the upper case and the cylindrical outer surface of the annular base portion of the lower case. It is smoothly allowed by the sliding of the synthetic resin in the radial sliding bearing portion formed by the formed cylindrical inner surface and cylindrical outer surface.
- the radial sliding bearing portion can be formed between the upper and lower cases without using the radial sliding bearing, and the radial dimension can be reduced, and an inexpensive thrust sliding bearing and the thrust sliding bearing are used.
- a strut-type suspension mounting structure can be provided.
- FIG. 1 is a cross-sectional view of a thrust slide bearing as an example of an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the lower case shown in FIG.
- FIG. 3 is a partially enlarged sectional view of the lower case shown in FIG. 4 is a cross-sectional view of the upper case shown in FIG.
- FIG. 5 is a partially enlarged cross-sectional view of the upper case shown in FIG. 6 is a plan view of the thrust slide bearing piece shown in FIG.
- FIG. 7 is a sectional view taken along line VII-VII of the thrust slide bearing piece shown in FIG.
- FIG. 8 is a cross-sectional view of a preferred example of a strut-type suspension mounting structure of the embodiment of the present invention using the thrust slide bearing piece shown in FIG.
- a thrust slide bearing 1 of the present invention is made of a synthetic resin lower case 2, a synthetic resin upper case 3 superimposed on the lower case 2, and a synthetic resin made between the upper case 3 and the lower case 2. And a thrust sliding bearing piece 4.
- the lower case 2 has an annular upper surface 5, an annular lower surface 6, a cylindrical small-diameter inner surface 7, a cylindrical large-diameter inner surface 8, and a cylindrical outer surface 9 disposed between the annular upper surface 5 and the annular lower surface 6.
- An annular base portion 11 having a wide annular recess 10, a small-diameter hole 12 defined by the cylindrical small-diameter inner surface 7 of the annular base portion 11 and opened at the annular lower surface 6 of the annular base portion 11,
- a large diameter in the shape of a truncated cone defined by a cylindrical conical large-diameter inner surface 8 that expands in diameter toward the annular upper surface 5 of the annular base portion 11 and opens at the annular upper surface 5 of the annular base portion 11.
- a hole 13 an annular inner peripheral end connected to the cylindrical small-diameter inner surface 7, an annular outer peripheral end connected to the cylindrical large-diameter inner surface 8, and a diameter from the lower end of the cylindrical outer surface 9.
- An annular protrusion 15 protruding outward in the direction, and the annular protrusion 15
- a cylindrical projection 19 provided on the annular upper surface 16 and defining an annular recess 18 in cooperation with the cylindrical outer surface 9 and the annular upper surface 16 of the annular projection 15 on the cylindrical inner surface 17;
- the annular lower part 6 of the annular base part 11 is annularly connected to the annular lower face 6. It is provided with two annular recesses 21 for extending the upper surface 5 and surrounding the small-diameter hole 12 for stealing meat.
- the upper case 3 is provided integrally with the annular substrate portion 25 and the cylindrical inner surface of the annular substrate portion 25 so as to hang downward from the annular upper surface 26 of the annular substrate portion 25 and the cylindrical inner surface 27.
- an inner cylindrical hanging portion 29 that defines a central hole 28 concentric with the small-diameter hole 12, and the inner cylindrical shape that hangs down from the annular upper surface 26 of the annular substrate portion 25 onto the cylindrical outer surface of the annular substrate portion 25.
- a thick outer cylindrical drooping portion 32 having a cylindrical inner surface 31 and extending integrally below the annular lower end surface 30 of the drooping portion 29, and an annular lower surface 33 of the annular substrate portion 25.
- An annular recess 36 defined by a cylindrical outer surface 34 composed of a truncated conical surface of the inner cylindrical hanging portion 29 and a cylindrical inner surface 31 of the outer cylindrical hanging portion 32, and an annular lower end surface 37 of the outer cylindrical hanging portion 32.
- Inner cylindrical upright wall portion 38 erected downward from An outer cylindrical standing wall portion 39, an annular lower end surface 37 of the outer cylindrical hanging portion 32, a cylindrical outer surface 40 of the inner cylindrical standing wall portion 38, and an annular concave portion defined by the cylindrical inner surface 41 of the outer cylindrical standing wall portion 39. 42, an annular engagement portion 43 projecting downward from the annular lower end surface of the outer cylindrical standing wall portion 39, and an annular hook portion 44 projecting radially inward from the tubular inner surface of the annular engagement portion 43. I have.
- the outer cylindrical hanging portion 32 having a cylindrical inner surface 31 that forms a radial sliding bearing portion with the cylindrical outer surface 9 of the lower case 2 has a wall thickness of the inner cylindrical hanging portion 29 in order to increase the strength against the radial load. It is formed larger than the wall thickness.
- the thrust slide bearing piece 4 is formed on each of an annular plate-like portion 53 having a cylindrical inner surface 52 that defines a central hole 51, and an annular upper surface 54 and an annular lower surface 55 of the annular plate-like portion 53.
- An annular groove 56 for containing a lubricant such as grease surrounding the central hole 51 and an annular upper surface 54 and an annular lower surface 55 of the annular plate-like portion 53 are formed, and one end thereof is formed.
- a plurality of radial concave grooves 58 for containing a lubricant such as grease are provided in the annular concave groove 56 and the other end is opened to the outside by a cylindrical outer surface 57 of the annular plate-like portion 53. .
- the cylindrical inner surface 52 that defines the central hole 51 of the thrust slide bearing piece 4 has an inner diameter that is larger than the outer diameter of the annular inner vertical wall surface 61 of the annular base portion 11 that defines the annular recess 10.
- the cylindrical outer surface 57 of the slide bearing piece 4 has an outer diameter dimension smaller than the inner diameter dimension of the annular outer standing wall surface 62 of the annular base portion 11 that defines the annular recess 10, and the annular plate-like portion 53 has an annular shape.
- An annular groove 56 and a radial groove 58 formed in the upper surface 54 and the annular lower surface 55 are filled with a lubricant such as grease.
- the thrust slide bearing piece 4 is disposed in the annular recess 36 with its annular upper surface 54 slidably contacting the annular lower surface 33 of the annular substrate portion 25 defining the annular recess 36, while the annular lower surface 55 is
- the annular inner wall surface 61 and the outer annular wall surface 62 cooperate with the annular recess bottom surface 63 of the annular base portion 11 defining the annular recess 10 to be slidably contacted with the annular recess 10,
- the annular lower surface 33 of the annular substrate portion 25 of the case 3 and the annular upper surface 5 of the annular base portion 11 of the lower case 2 are separated from each other, and thus the annular upper surface 54 of the annular plate-like portion 53 is wide. It is located above the opening surface of the annular recess 10.
- the upper case 3 has a cylindrical large-diameter inner surface of the annular base portion 11 of the lower case 2 with a gap between the cylindrical outer surface 34 of the inner cylindrical hanging portion 29 of the annular substrate portion 25. 8 and the annular lower end surface 30 of the inner cylindrical drooping portion 29 is opposed to the annular shoulder surface 14 of the annular base portion 11 of the lower case 2 with a gap so that it is thicker than the inner cylindrical drooping portion 29 in the radial direction.
- the cylindrical inner surface 31 of the outer cylindrical hanging portion 32 is slidably brought into contact with the cylindrical outer surface 9 of the annular base portion 11 of the lower case 2, the inner cylindrical standing wall portion 38 is disposed in the annular recess 18, and the annular hook portion 44 is elastically fitted to the annular engagement protrusion 20, and the cylindrical outer surface 9 of the annular base 11 is slidable on the elastic fitting and the cylindrical inner surface 31 of the outer cylindrical hanging portion 32.
- Arranged in the annular recess 18 between the contact portion The as to form a seal by the labyrinth action in the inner cylindrical wall part 38 and the cylindrical projection 19 and the annular engaging projecting portion 20 disposed in the annular recess 42, formed by superimposed lower case 2.
- the relative rotation between the upper case 3 and the lower case 2 is such that, in the thrust load direction, the annular upper surface 54 of the thrust slide bearing piece 4 disposed in the annular recesses 10 and 36 and the upper case.
- the cylindrical inner surface 35 and the lower portion of the outer cylindrical hanging portion 32 of the upper case 3 are allowed in the radial load direction with respect to the radial sliding direction. It is permitted by smooth sliding at the radial sliding bearing portion with the cylindrical outer surface 9 of the annular base portion 11 of the case 2.
- the annular upper surface 54 of the thrust slide bearing piece 4 and the circle of the upper case 3 permitting smooth sliding of the relative rotation between the upper case 3 and the lower case 2 in the thrust load direction. Since the thrust slide bearing portion formed of the annular lower surface 33 of the annular substrate portion 25 is positioned above the sealing portion by the labyrinth action and the annular upper surface 5 of the lower case 2, the inner peripheral surface of the thrust slide bearing 1 Intrusion of foreign matter such as dust into the thrust sliding bearing portion from the side is prevented as much as possible, and troubles such as abnormal wear of the thrust sliding bearing portion due to the entry of the foreign matter can be avoided, and the radial load direction The cylindrical inner surface 31 of the outer cylindrical hanging portion 32 of the upper case 3 and the circle of the lower case 2 permitting smooth sliding of the relative rotation between the upper case 3 and the lower case 2 with respect to The entry of foreign matter such as dust from the outer peripheral surface side of the thrust slide bearing 1 into the radial slide bearing portion formed of the cylindrical outer surface 9 of the cylindrical base portion 11 is prevented as much
- a strut suspension 72 for a vehicle including a hydraulic shock absorber (not shown) and a coil spring 71 disposed so as to surround the hydraulic shock absorber is provided via the thrust slide bearing 1. Is attached to the vehicle body by an attachment structure 73.
- An attachment structure 73 for attaching the strut suspension 72 to the vehicle body via the thrust slide bearing 1 includes an attachment means 75 for attaching the piston rod 74 of the hydraulic shock absorber to the vehicle body, and an upper spring receiving means 76 for receiving the coil spring 71.
- the thrust slide bearing 1 is disposed between the attachment means 75 and the upper spring receiving means 76.
- the attachment means 75 includes a vehicle body attachment member 78 that is fixed to the vehicle body via bolts 77, and is integrally coupled to the vehicle body attachment member 78 and the annular base plate portion 25 of the upper case 3 of the thrust slide bearing 1.
- a mounting member 80 that surrounds the cylindrical outer surface 79 of the annular upper surface 26 and the outer cylindrical hanging portion 32; and a connection fixing means 82 for connecting and fixing the upper end portion 81 of the piston rod 74 of the hydraulic shock absorber to the vehicle body mounting member 78; It has.
- the vehicle body mounting member 78 includes an annular flat plate portion 83 fixed to the vehicle body side, and a cylindrical projecting portion that protrudes downward integrally from the annular inner edge of the annular flat plate portion 83 and defines the through hole 84 on the inner peripheral surface. 85.
- the mounting member 80 has a through hole 86 and is formed integrally with the annular flat plate portion 87 formed on the lower surface of the annular flat plate portion 83 of the vehicle body mounting member 78, and from the annular outer peripheral edge of the annular flat plate portion 87.
- the mounting member 80 includes an annular flat plate portion 87 fitted into the outer peripheral surface of the cylindrical projecting portion 85 of the vehicle body mounting member 78 through the through-hole 86, and an annular flat plate shape.
- the portion 87 is joined to the lower surface of the annular flat plate-like portion 83 of the vehicle body attachment member 78 and is integrally coupled to the vehicle body attachment member 78.
- the upper spring receiving means 76 includes an annular flat plate portion 90 and a cylindrical protruding portion 92 that protrudes upward integrally from the annular inner edge of the annular flat plate portion 90 and defines the through hole 91 on the inner peripheral surface.
- the upper end surface 94 of the cylindrical protruding portion 92 of the upper spring receiving member 93 is arranged to face the lower end surface 95 of the cylindrical protruding portion 85 of the vehicle body mounting member 78.
- connection fixing means 82 includes an outer connection member 96 that is fitted on the inner surface of the vehicle body attachment member 78 on the outer surface, an annular elastic rubber body 97 that is bonded to the outer connection member 96, and an inner surface that is bonded to the annular elastic rubber body 97.
- a connecting member 98 and a nut 99 screwed to the upper end 81 sandwiching the inner edge of the inner connecting member 98 together with the upper end 81 of the piston rod 74 are provided.
- the thrust slide bearing 1 includes an inner surface of the cylindrical protrusion 85 of the vehicle body mounting member 78, a lower surface of the annular flat plate portion 87 of the mounting member 80, an inner surface of the cylindrical hanging portion 89, and an upper surface of the annular flat plate portion 90 of the upper spring bearing member 93.
- the cylindrical inner surface 27 of the inner cylindrical hanging portion 29 of the annular base plate portion 25 of the upper case 3 is formed in the annular space 101 formed by the outer surface of the cylindrical protrusion 92 of the upper spring receiving member 93.
- the annular upper surface 26 of the annular substrate portion 25 of the upper case 3 is in contact with the lower surface of the annular flat plate portion 87 of the attachment member 80 and the cylindrical hanging portion 89 of the attachment member 80 is in contact with the outer surface of the cylindrical protrusion 85.
- the cylindrical outer surface 79 of the outer cylindrical drooping portion 32 is surrounded by the inner surface in contact with the inner surface of the cylindrical drooping portion 89, and the annular lower surface 6 of the annular base portion 11 of the lower case 2 is the flat plate portion of the upper spring receiving member 93.
- the attachment structure 73 when the upper spring receiving means 76 is rotated with respect to the attachment means 75 by the steering operation, the lower case 2 is rotated with respect to the upper case 3, and the rotation of the lower case 2 is
- the thrust sliding bearing piece 4 disposed between the lower case 2 and the lower case 2 is smoothly allowed to perform a steering operation smoothly.
- a bearing gap is formed between the cylindrical inner surface 31 of the outer cylindrical hanging portion 32 of the annular substrate portion 25 of the upper case 3 and the cylindrical outer surface 9 of the annular base portion 11 of the lower case 2. It is smoothly allowed by the sliding of the synthetic resin in the radial sliding bearing portion formed while maintaining (clearance).
- the thrust slide bearing portion in the thrust slide bearing 1 disposed in the annular space 101 is located above the sealing portion by the labyrinth action and the annular upper surface 5.
- intrusion of foreign matters such as dust from the outer peripheral surface side to the thrust sliding bearing portion is prevented as much as possible, and it is possible to avoid problems such as abnormal wear of the thrust sliding bearing portion due to the entry of the foreign matter.
- the cylindrical inner surface 31 of the outer cylindrical drooping portion 32 of the upper case 3 and the annular base portion 11 of the lower case 2 permitting smooth sliding of the relative rotation between the upper case 3 and the lower case 2 in the radial load direction.
- Intrusion of foreign matter such as dust from the outer peripheral surface side of the thrust slide bearing 1 into the radial slide bearing portion composed of the cylindrical outer surface 9 is prevented as much as possible by the sealing portion by the labyrinth action. Is, it is possible to avoid the inconvenience of abnormal wear of the radial slide bearing portions due to of the foreign matter intrusion.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Sliding-Contact Bearings (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
2 下部ケース
3 上部ケース
4 スラスト滑り軸受片
Claims (2)
- 合成樹脂製の下部ケースと、この下部ケースに重ね合わされる合成樹脂製の上部ケースと、上部及び下部ケース間に配された合成樹脂製のスラスト滑り軸受片とを具備しており、下部ケースは、環状上面、環状下面、これら環状上面及び環状下面間に配された筒状小径内面及び筒状大径内面並びに円筒外面を有すると共に当該環状上面に第一の環状凹部を有する円環状基体部と、該円環状基体部の筒状小径内面で規定されていると共に該円環状基体部の環状下面で開口する小径孔と、該円環状基体部の筒状大径内面で規定されていると共に該円環状基体部の環状上面で開口する大径孔と、環状内周端では筒状小径内面に連接されていると共に環状外周端では筒状大径内面に連接された環状肩部面と、該円筒外面の下端部から径方向外方に突出する環状突出部と、該環状突出部の環状上面に設けられていると共に筒状内面で該円筒外面及び該環状突出部の環状上面と協働して第二の環状凹部を規定する筒状突起部と、該筒状突起部の筒状外面から径方向外方に突出する環状係合突起部とを備えており、上部ケースは、円環状基板部と、該円環状基板部の筒状内面に当該円環状基板部の環状上面から下方に垂下して一体的に設けられていると共に筒状内面で小径孔と同心の中央孔を規定する内側筒状垂下部と、該円環状基板部の筒状外面に当該円環状基板部の環状上面から垂下して該内側筒状垂下部の環状下端面よりもより下方に延びて一体的に設けられていると共に円筒内面を有した厚肉の外側筒状垂下部と、該円環状基板部の環状下面、該内側筒状垂下部の筒状外面及び外側筒状垂下部の円筒内面によって規定された第三の環状凹部と、該外側筒状垂下部の環状下端面から下方に向かって立設された内側筒状立壁部及び外側筒状立壁部と、該外側筒状垂下部の環状下端面、内側筒状立壁部の筒状外面及び外側筒状立壁部の筒状内面によって規定された第四の環状凹部と、外側筒状立壁部の環状下端面から下方に突出する環状係合部と、該環状係合部の筒状内面から径方向内方に突出する環状フック部とを備えており、スラスト滑り軸受片は、その環状上面を第三の環状凹部を規定する円環状基板部の環状下面に摺動自在に接触させて第三の環状凹部に配されている一方、その環状下面を該第一の環状凹部を規定する円環状基体部の環状凹部底面に摺動自在に接触させて当該第一の環状凹部に配されて、上部ケースの円環状基板部の環状下面と下ケースの円環状基体部の環状上面とを離間させており、上部ケースは、その内側筒状垂下部の環状下端面を隙間をもって環状肩部面に対面させ、径方向に関して内側筒状垂下部よりも厚肉のその外側筒状垂下部の円筒内面を下部ケースの円環状基体部の円筒外面に摺動自在に接触させ、その内側筒状立壁部を第二の環状凹部に配置し、その環状フック部を環状係合突起部に弾性的に嵌着させ、当該弾性的な嵌着部と外側筒状垂下部の円筒内面への円環状基体部の円筒外面の摺動自在な接触部との間において第二の環状凹部に配された該内側筒状立壁部と第四の環状凹部に配された筒状突起部及び環状係合突起部とでラビリンス作用による密封部を形成して、下部ケースに重ね合わされてなるスラスト滑り軸受。
- 油圧式ショックアブソーバ及びこの油圧式ショックアブソーバを囲繞して配されたコイルばねを具備した車輌のストラット型サスペンションを請求項1に記載のスラスト滑り軸受を介して車体に取付ける取付構造であって、油圧式ショックアブソーバのピストンロッドを車体に取付ける取付手段と、コイルばねを受ける上部ばね受手段とを具備しており、該スラスト滑り軸受は、当該取付手段と上部ばね受手段との間に配されており、取付手段は、車体側に固定された環状平板状部及び該環状平板状部の環状内縁から下方に突出すると共に内周面で貫通孔を規定する円筒突出部を備えた車体取付部材と、該車体取付部材の環状平板状部の下面に一体に形成された環状平板状部及び当該環状平板状部の環状外縁から下方に延びる円筒垂下部を備えた取付部材とを具備しており、上部ばね受手段は、環状平板状部、当該環状平板状部の環状内縁から上方に突出すると共に内周面で貫通孔を規定する円筒突出部を備えた上部ばね受部材からなり、該車体取付部材の円筒突出部の下端面と上部ばね受部材の円筒突出部の上端面とは、互いに相対向して配置されており、スラスト滑り軸受は、車体取付部材の円筒突出部と取付部材の環状平板状部と取付部材の円筒垂下部と上部ばね受部材の環状平板状部と上部ばね受部材の円筒突出部とで形成される環状空間に、上部ケースの円環状基板部の内側円筒垂下部が車体取付部材の円筒突出部の外面に接触され、上部ケースの円環状基板部の環状上面が取付部材の環状平板状部に接触されていると共に取付部材の円筒垂下部の内面で外側円筒垂下部の外周面が囲繞され、下部ケースの円環状基体部の環状下面が上部ばね受部材の平板状部の上面に接触されていると共に下部ケースの円環状基体部の筒状小径内面が上部ばね受部材の円筒突出部の内面で囲繞されて、配されていることを特徴とする取付構造。
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RU2013126067/11A RU2542839C1 (ru) | 2011-01-07 | 2011-12-20 | Упорный подшипник скольжения и монтажная конструкция подвески стоечного типа с использованием упорного подшипника скольжения |
BR112013014150-6A BR112013014150B1 (pt) | 2011-01-07 | 2011-12-20 | mancal de impulso deslizante e estrutura de montagem de uma suspensão de tipo escora com o uso do dito mancal de impulso deslizante |
CN201180064177.2A CN103314224B (zh) | 2011-01-07 | 2011-12-20 | 推力滑动轴承和使用该推力滑动轴承的支柱型悬架的安装结构 |
US13/977,241 US8740233B2 (en) | 2011-01-07 | 2011-12-20 | Thrust sliding bearing and mounting structure of a strut-type suspension using the thrust sliding bearing |
EP11855018.5A EP2662580B1 (en) | 2011-01-07 | 2011-12-20 | Thrust sliding bearing and mounting structure of a strut-type suspension using said thrust sliding bearing |
US14/257,133 US9267544B2 (en) | 2011-01-07 | 2014-04-21 | Thrust sliding bearing and mounting structure of a strut-type suspension using the thrust sliding bearing |
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US13/977,241 A-371-Of-International US8740233B2 (en) | 2011-01-07 | 2011-12-20 | Thrust sliding bearing and mounting structure of a strut-type suspension using the thrust sliding bearing |
US14/257,133 Division US9267544B2 (en) | 2011-01-07 | 2014-04-21 | Thrust sliding bearing and mounting structure of a strut-type suspension using the thrust sliding bearing |
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JP5842402B2 (ja) * | 2011-06-20 | 2016-01-13 | オイレス工業株式会社 | スラスト滑り軸受 |
JP2013148132A (ja) * | 2012-01-17 | 2013-08-01 | Oiles Corp | スラスト滑り軸受 |
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JP6322889B2 (ja) * | 2013-02-15 | 2018-05-16 | オイレス工業株式会社 | 合成樹脂製の滑り軸受 |
US9708923B2 (en) * | 2013-11-13 | 2017-07-18 | Dresser-Rand Company | Adjustable labyrinth seal |
US9434228B1 (en) | 2015-07-28 | 2016-09-06 | Honda Motor Co., Ltd. | Vehicle component mounting apparatus, and methods of use and manufacture thereof |
BR112018074446B1 (pt) * | 2016-06-24 | 2022-08-09 | Oiles Corporation | Mancal de encosto de veículo |
CN106050925A (zh) * | 2016-07-29 | 2016-10-26 | 常州市莱特气弹簧有限公司 | 气动杆的塑料平面轴承 |
DE102017103940B4 (de) * | 2017-02-24 | 2020-06-18 | Vibracoustic Gmbh | Gleitlager für ein Stützlager |
JP6917290B2 (ja) * | 2017-12-12 | 2021-08-11 | オイレス工業株式会社 | 滑り軸受 |
CN111433470B (zh) | 2017-12-20 | 2022-04-15 | 舍弗勒技术股份两合公司 | 支柱轴承 |
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CN105134761B (zh) | 2017-11-10 |
JP2012145147A (ja) | 2012-08-02 |
CN103314224A (zh) | 2013-09-18 |
US9267544B2 (en) | 2016-02-23 |
US20130270790A1 (en) | 2013-10-17 |
BR112013014150A2 (pt) | 2016-09-27 |
BR112013014150B1 (pt) | 2021-03-16 |
EP2662580A1 (en) | 2013-11-13 |
EP2662580B1 (en) | 2018-03-14 |
CN103314224B (zh) | 2016-03-23 |
CN105134761A (zh) | 2015-12-09 |
EP2662580A4 (en) | 2014-05-21 |
US20140225344A1 (en) | 2014-08-14 |
RU2542839C1 (ru) | 2015-02-27 |
JP5673110B2 (ja) | 2015-02-18 |
RU2583827C1 (ru) | 2016-05-10 |
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US8740233B2 (en) | 2014-06-03 |
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