WO2019116952A1 - Palier lisse et son procédé de fabrication - Google Patents

Palier lisse et son procédé de fabrication Download PDF

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Publication number
WO2019116952A1
WO2019116952A1 PCT/JP2018/044437 JP2018044437W WO2019116952A1 WO 2019116952 A1 WO2019116952 A1 WO 2019116952A1 JP 2018044437 W JP2018044437 W JP 2018044437W WO 2019116952 A1 WO2019116952 A1 WO 2019116952A1
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WO
WIPO (PCT)
Prior art keywords
center plate
lower case
upper case
case
integrally formed
Prior art date
Application number
PCT/JP2018/044437
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English (en)
Japanese (ja)
Inventor
祐太 石井
晃一 森重
Original Assignee
オイレス工業株式会社
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Filing date
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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 WO2019116952A1 publication Critical patent/WO2019116952A1/fr

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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
    • 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

Definitions

  • the present invention relates to a slide bearing for supporting a load, and more particularly to a slide bearing made of synthetic resin for supporting a load applied to a shaft member such as a suspension of a vehicle.
  • a strut type suspension used for a front wheel of an automobile has a structure in which a piston rod, a shock absorber, and a coil spring are combined, and the steering operation rotates the shock absorber with the coil spring. Therefore, in order to support the load applied to the strut type suspension while allowing smooth rotation of the shock absorber and the coil spring, the upper mount and the upper end of the coil spring are usually a mounting mechanism of the strut type suspension to the vehicle body A bearing is disposed between an upper spring seat that is a spring seat that supports the.
  • Patent Document 1 discloses a synthetic resin slide bearing for a strut type suspension.
  • the slide bearing is an annular space formed by combining an upper case attached to the upper mount side, a lower case attached to the upper spring seat side and rotatably combined with the upper case, an upper case and a lower case. And a center plate integrally formed with a dust seal that prevents dust, mud and the like from entering the annular space.
  • the upper case, the lower case, and the center plate are respectively constituted by separate parts, and are assembled by combining these separately molded parts.
  • the number of parts is large, the assembly cost is increased, and defective parts due to forgetting to assemble some parts, particularly the center plate, are generated.
  • the management cost of parts also increases with the number of parts.
  • the present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a slide bearing which can reduce the number of parts and cost, and a method of manufacturing the same.
  • the center plate is integrally formed with the lower case or the upper case, and is used as a material of the center plate for the lower case or the upper case integrally formed with the center plate.
  • a synthetic resin having a melting point equal to or higher than that of the synthetic resin is used.
  • the dust plate may be formed integrally with the lower case or the upper case together with the center plate using the same material as the center plate.
  • the present invention A slide bearing for supporting a load, Upper case, A lower case combined with the upper case; And an annular center plate disposed between the upper case and the lower case to realize relative rotation between the upper case and the lower case.
  • the center plate is It is integrally formed with the lower case or the upper case,
  • a synthetic resin having a melting point equal to or higher than the melting point of the synthetic resin used for the lower case or the upper case integrally formed with the center plate is used.
  • the center plate is integrally formed with the lower case or upper case to reduce the number of parts, and the synthetic resin used for the lower case or upper case integrally formed with the center plate as a material of the center plate A synthetic resin having a melting point equal to or higher than the melting point of For this reason, the molten material of the center plate flows onto the primary side molded product (lower case or upper case) by two-color molding with the center plate as the secondary side, and with the center plate of the primary side molded product. The contact surface is melted to form asperities, and the adhesive strength between the center plate and the molded product on the primary side is improved.
  • the center plate can be prevented from peeling off from the primary-side molded product, and the structure of the mold for integrally forming the center plate with the lower case or the upper case can be simplified. . Therefore, according to the present invention, the cost can be reduced by reducing the number of parts.
  • FIG. 1 (A), 1 (B) and 1 (C) are a plan view, a bottom view and a front view of a sliding bearing 1 according to an embodiment of the present invention
  • FIG. 1 (D) is FIG. 2 is a cross-sectional view of the sliding bearing 1 shown in FIG.
  • FIG. 2 is an enlarged view of a portion B of the sliding bearing 1 shown in FIG. 1 (D).
  • 3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the upper case 2
  • FIG. 3 (D) is an upper case shown in FIG. 3 (A).
  • FIG. 7 is a cross-sectional view taken along line CC in FIG.
  • FIG. 4 (A), 4 (B) and 4 (C) are a plan view, a bottom view and a front view of the lower case 3, and FIG. 4 (D) is a lower case shown in FIG. 4 (A).
  • 3 is a cross-sectional view taken along line 3-3 5 (A) and 5 (B) are a plan view and a bottom view of the center plate 4
  • FIG. 5 (C) is a cross-sectional view of the center plate 4 shown in FIG.
  • FIG. 5 (D) is an enlarged view of a portion F of the center plate 4 shown in FIG. 5 (C).
  • FIG. 6 (A) is a plan view of the sliding sheet 5
  • FIG. 6 (B) is a GG sectional view of the sliding sheet 5 shown in FIG. 6 (A).
  • FIG. 7 (A) and 7 (B) are a plan view and a bottom view of the dust seal 6, and FIG. 7 (C) is a cross-sectional view of the dust seal 6 shown in FIG. 7 (D) is an enlarged view of a portion I of the dust seal 6 shown in FIG. 7 (C).
  • FIG. 8 is a flow chart for explaining the method of forming the lower case 3, the center plate 4 and the dust seal 6.
  • FIG. 9 (A) is a plan view of the lower case 3a, the center plate 4a and the dust seal 6a in a modification of the slide bearing 1
  • FIG. 9 (B) is a lower case 3a shown in FIG.
  • FIG. 9C is a J-J cross-sectional view of the plate 4a and the dust seal 6a, and FIG.
  • FIG. 10 (A) is a plan view of the lower case 3b, the center plate 4b and the dust seal 6 in a modification of the slide bearing 1
  • FIG. 10 (B) is a lower case 3b shown in FIG.
  • FIG. 10 (C) is an enlarged view of the M portion of the lower case 3b, the center plate 4b, and the dust seal 6 shown in FIG. 10 (B).
  • 11 (A), 11 (B) and 11 (C) are a plan view, a bottom view and a front view of the lower case 3c used for the modification of the slide bearing 1, and FIG.
  • FIG. 11 (D) is It is NN sectional drawing of lower case 3c shown to FIG. 11 (A).
  • 12 (A) and 12 (B) are a plan view and a bottom view of the center plate 4c used in a modification of the slide bearing 1, and
  • FIG. 12 (C) is a center plate shown in FIG. 12 (A).
  • FIG. 12 (D) is an enlarged view of a portion Q of the center plate 4c shown in FIG. 12 (C).
  • 13 (A), 13 (B) and 13 (C) are a plan view, a bottom view and a front view of the lower case 3d used in the modification of the slide bearing 1, and
  • FIG. 13 (D) is
  • FIG. 14 is an RR cross-sectional view of the lower case 3 d shown in FIG. 13 (A).
  • FIG. 14 (A) and 14 (B) are a plan view and a bottom view of the dust seal 6b used in a modification of the slide bearing 1, and FIG. 14 (C) shows the dust seal 6b shown in FIG. 14 (A).
  • FIG. 14 (D) is an enlarged view of a T portion of the dust seal 6b shown in FIG. 14 (C).
  • Fig. 15 (A) is a plan view of a modified example 1a of the sliding bearing 1
  • Fig. 15 (B) is a cross-sectional view taken along line UU of the sliding bearing 1a shown in Fig. 15 (A).
  • Fig. 15 is an enlarged view of a V portion of the sliding bearing 1a shown in Fig. 15 (B).
  • FIG. 16 (A) is a plan view of a modification 1b of the slide bearing 1
  • Fig. 16 (B) is an XX cross-sectional view of the slide bearing 1b shown in Fig. 16 (A).
  • Fig. 16 is an enlarged view of a Y portion of the sliding bearing 1b shown in Fig. 16 (B).
  • FIG. 1 (A), 1 (B) and 1 (C) are a plan view, a bottom view and a front view of a sliding bearing 1 according to an embodiment of the present invention
  • FIG. 1 (D) is FIG. 2 is a cross-sectional view of the sliding bearing 1 shown in FIG.
  • FIG. 2 is the B section enlarged view of the sliding bearing 1 shown to FIG. 1 (D).
  • the slide bearing 1 includes an accommodation hole 10 for accommodating a shock absorber (not shown) of a suspension (for example, a strut type suspension) of a vehicle, and the rotation of the shock absorber accommodated in the accommodation hole 10 Support the load of the car body applied to the suspension while allowing movement.
  • a shock absorber for example, a strut type suspension
  • the slide bearing 1 is rotatably combined with the upper case 2 and the upper case 2 to form an annular space 7 between the upper case 2 and the lower case 3, and the annular space 7.
  • Upper case 2 is formed of synthetic resin such as polyacetal resin, polyamide resin, polybutylene terephthalate resin or the like, which is impregnated with lubricating oil if necessary to improve sliding characteristics, and in a state where the shock absorber of the suspension is inserted Mounted on an upper mount (not shown) which is a mounting mechanism of the suspension to the vehicle body.
  • synthetic resin such as polyacetal resin, polyamide resin, polybutylene terephthalate resin or the like, which is impregnated with lubricating oil if necessary to improve sliding characteristics, and in a state where the shock absorber of the suspension is inserted
  • an upper mount (not shown) which is a mounting mechanism of the suspension to the vehicle body.
  • FIG. 3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the upper case 2, and FIG. 3 (D) is an upper case shown in FIG. 3 (A).
  • FIG. 7 is a cross-sectional view taken along line CC in FIG.
  • the upper case 2 is formed on an annular upper case main body 21 provided with an insertion hole 20 for inserting a shock absorber, and the upper surface 22 of the upper case main body 21, and the slide bearing 1 is attached to the upper mount And an annular recess 25 formed on the lower surface 24 of the upper case main body 21 and rotatably combined with the lower case 3 to form an annular space 7.
  • a load transfer surface 27 that constitutes the upper surface of the annular space 7 is formed on the bottom surface 26 of the annular recess 25.
  • the load transfer surface 27 transfers the load of the vehicle body applied to the suspension to the sliding sheet 5 and the center plate 4.
  • the lower case 3 is formed of a synthetic resin such as polyacetal resin, polyamide resin, polybutylene terephthalate resin, etc., and is an upper spring seat that supports the upper end portion of the coil spring (not shown) of the suspension in a state where the shock absorber of the suspension is inserted. Attached to (not shown).
  • FIG. 4 (A), 4 (B) and 4 (C) are a plan view, a bottom view and a front view of the lower case 3, and FIG. 4 (D) is a lower case shown in FIG. 4 (A).
  • 3 is a cross-sectional view taken along line 3-3 of FIG.
  • the lower case 3 is formed on a cylindrical lower case main body 31 provided with an insertion hole 30 for inserting a shock absorber, and on the upper end portion 35 side of the lower case main body 31.
  • the lower surface of the upper case main body 21 of the upper case 2 is formed on the flange portion 32 projecting radially outward from the outer peripheral surface 36 and the upper surface 33 of the flange portion 32 and the lower case 3 is combined with the upper case 2.
  • an annular recess 34 which is accommodated in the annular recess 25 formed in the recess 24 to form the annular space 7, and a plurality of circumferentially formed through holes 39 penetrating the bottom surface 38 of the annular recess 34 and the lower surface 37 of the flange portion 32.
  • An upper spring seat is attached to the lower surface 37 of the flange portion 32.
  • the through hole 39 has a truncated cone shape in which the hole diameter on the bottom surface 38 side of the annular recess 34 is larger than the hole diameter on the lower surface 37 side of the flange portion 32.
  • the hole diameter on the side may be the same cylindrical as the hole diameter on the lower surface 37 side of the flange portion 32.
  • the shape of the through hole 39 is not limited to the truncated cone shape or the cylindrical shape, and may be a truncated pyramid shape or a prismatic shape.
  • FIG. 4 in order to simplify the drawing, only a part of the through holes 39 is denoted by a reference numeral.
  • the center plate 4 is an elastic body having excellent sliding characteristics, and is integrally formed with the lower case 3 so as to be disposed in an annular recess 34 formed on the upper surface 33 of the flange portion 32 of the lower case 3. .
  • the center plate 4 supports the load of the vehicle body applied to the suspension via the load transfer surface 27 of the annular recess 25 of the upper case 2 and the sliding sheet 5 (see FIG. 2).
  • a lubricant such as PTFE (polytetrafluoroethylene), lubricating oil or silicone is added as necessary to the material of the center plate 4
  • An elastomer of a synthetic resin such as a system elastomer or a polyurethane resin elastomer, which is a synthetic resin having a melting point equal to or higher than the melting point of the synthetic resin used in the lower case 3 integrally formed with the center plate 4 is used.
  • a polyester resin elastomer having a melting point of about 210 degrees and a polyurethane having a melting point of about 200 degrees as the material of the center plate 4
  • a resin elastomer, a polyolefin resin elastomer having a melting point of about 160 degrees, a polystyrene resin elastomer, etc. may be used.
  • FIG. 5 (A) and 5 (B) are a plan view and a bottom view of the center plate 4, and FIG. 5 (C) is a cross-sectional view of the center plate 4 shown in FIG. FIG. 5 (D) is an enlarged view of a portion F of the center plate 4 shown in FIG. 5 (C).
  • the center plate 4 is an annular body, and a load transmitting surface 27 formed on the bottom surface 26 of the annular recess 25 of the upper case 2 and a bearing surface 40 for supporting a load applied via the sliding sheet 5. And a plurality of annular grooves 42 formed on the bearing surface 40, which are opposite to the bearing surface 40, for holding a lubricant such as lubricating grease, and a plurality of circumferential surfaces on the rear surface 41 And the convex portion 43.
  • the back surface 41 is a flat surface and faces and contacts the bottom surface 38 of the annular recess 34 of the lower case 3.
  • the convex portion 43 has a shape aligned with the through hole 39 of the lower case 3, and is disposed in the through hole 39.
  • FIG. 5 in order to simplify the drawing, only some of the convex portions 43 are denoted by reference numerals.
  • the sliding sheet 5 is a sliding member disposed between the bearing surface 40 of the center plate 4 and the load transfer surface 27 of the upper case 2 in the annular space 7, and is made of PTFE, TFE (tetrafluoroethylene), or the like. It is made of a synthetic resin such as fluoroplastics such as modified PTFE, polyacetal resin, polyethylene resin, polyamide resin, polyphenylene sulfide resin obtained by copolymerizing a small amount of raw material (comonomer), and optionally PTFE (but thermoplastic plastic is PTFE Lubricating agents such as modified PTFE, lubricating oil, silicone, graphite and the like are added to improve sliding characteristics. In addition, reinforcing materials such as aramid fibers, glass fibers and carbon fibers are added as necessary to improve the strength. Alternatively, the sliding sheet 5 is formed of a metal excellent in sliding characteristics, such as a brass alloy.
  • FIG. 6 (A) is a plan view of the sliding sheet 5
  • FIG. 6 (B) is a GG sectional view of the sliding sheet 5 shown in FIG. 6 (A).
  • the sliding sheet 5 is an annular body formed in a flat plate shape in a cross-sectional shape in the direction of the axis O, and contacts the load transfer surface 27 formed on the bottom surface 26 of the annular recess 25 of the upper case 2.
  • a contact surface 50 and a sliding surface 51 located on the opposite side of the contact surface 50 and in sliding contact with the bearing surface 40 of the center plate 4 are provided.
  • the sliding surface 51 of the sliding sheet 5 comes into sliding contact with the bearing surface 40 of the center plate 4 to allow free rotation between the upper case 2 and the lower case 3.
  • the dust seal 6 is an elastic body formed of the same material as the center plate 4, and is mounted on the flange portion 32 of the lower case main body 31 of the lower case 3 as shown in FIG. Close the gap between 2 and lower case 3.
  • FIG. 7 (A) and 7 (B) are a plan view and a bottom view of the dust seal 6, and FIG. 7 (C) is a cross-sectional view of the dust seal 6 shown in FIG. 7 (D) is an enlarged view of a portion I of the dust seal 6 shown in FIG. 7 (C).
  • the dust seal 6 has a cylindrical dust seal main body 60 mounted on the flange portion 32 of the lower case main body 31 of the lower case 3 and an annular lip extending radially outward from the outer peripheral surface 61 of the dust seal main body 60. And a part 62.
  • the lip portion 62 abuts on the outer peripheral side inner wall 28 of the annular recess 25 of the upper case 2 in a state where the dust seal main body 60 is mounted to the flange portion 32 of the lower case main body 31 of the lower case 3. Thereby, the gap between the upper case 2 and the lower case 3 connected to the annular space 7 is closed to prevent the dust from entering the annular space 7 (see FIG. 2).
  • FIG. 8 is a flow chart for explaining the method of forming the lower case 3, the center plate 4 and the dust seal 6.
  • the lower case 3, the center plate 4, and the dust seal 6 are integrally formed by two-color molding. That is, first, the lower case 3 is formed by primary molding (S1), and then, the center plate 4 and the dust seal 6 are integrally formed with the lower case 3 by secondary molding (S2).
  • the center plate 4 and the dust seal 6 As a material of the center plate 4 and the dust seal 6, a synthetic resin having a melting point equal to or higher than the melting point of the synthetic resin used in the lower case 3 is used. Flows into the lower case 3 and the contact surface of the lower case 3 with the center plate 4 (the inner wall of the annular recess 34 and the through hole 39) and the contact surface with the dust seal 6 (the side wall of the flange portion 32) melt and unevenness Thus, the center plate 4 and the dust seal 6 firmly adhere to the lower case 3.
  • the center plate 4 and the dust seal 6 it is added to the material of the center plate 4 and the dust seal 6 by using an elastomer of the same kind of synthetic resin having high affinity with the synthetic resin used in the lower case 3.
  • the adhesive strength between the center plate 4 and the dust seal 6 and the lower case 3 can be further improved by including the same type of synthetic resin having high affinity with the synthetic resin used in the lower case 3 as an agent.
  • the sliding surface 51 of the sliding sheet 5 slides on the bearing surface 40 of the center plate 4 integrally formed with the lower case 3 together with the dust seal 6 so as to face the bearing surface 40
  • the upper case 2 and the lower case 3 are arranged such that the seat 5 is disposed and the contact surface 50 of the sliding sheet 5 faces the load transfer surface 27 formed on the bottom surface 26 of the annular recess 25 of the upper case 2.
  • the sliding bearing 1 is assembled by combining.
  • the center plate 4 and the dust seal 6 are integrally formed with the lower case 3 to reduce the number of parts, and the melting point of the synthetic resin used for the lower case 3 as the material of the center plate 4 and the dust seal 6 An elastomer of synthetic resin having the above melting point is used. Therefore, the molten material of the center plate 4 and the dust seal 6 flows onto the lower case 3 by two-color molding with the center plate 4 and the dust seal 6 on the secondary side, and the lower case 3 contacts the center plate 4 and the dust seal 6 The surface is melted to form asperities, and the bonding strength between the center plate 4 and the dust seal 6 and the lower case 3 is improved.
  • the center plate 4 and the dust seal 6 by using an elastomer of the same kind of synthetic resin having high affinity with the synthetic resin used for the lower case 3, or the center plate 4 and the dust seal 6
  • the adhesive strength between the center plate 4 and the dust seal 6 and the lower case 3 can be further improved by including the same type of synthetic resin having high affinity with the synthetic resin used in the lower case 3 as an additive in the material of .
  • the lower case 3 is provided with the through holes 39 penetrating the bottom surface 38 of the annular recess 34 on which the center plate 4 is mounted and the lower surface 37 of the flange portion 32.
  • a convex portion 43 disposed in the through hole 39 of the case 3 is provided. Therefore, the contact area between the center plate 4 and the lower case 3 can be increased to further improve the adhesive strength between the center plate 4 and the lower case 3.
  • the gate for pouring the molten material into the mold can be provided on the end face 44 of the convex portion 43 of the center plate 4 in the secondary molding of the center plate 4, it is necessary to provide the gate on the bearing surface 40 of the center plate 4 It disappears. Thereby, the bearing surface 40 can be smoothed to improve the sliding performance.
  • the center plate 4 and the dust seal 6 which are separate from each other are integrally formed with the lower case 3, but the present invention is not limited to this.
  • a plurality of notches 340 penetrating the annular recess 34 of the lower case 3a and the side wall of the flange 32 are provided in the circumferential direction, and the center plate 4a and the dust seal 6a are connected to the notches 340.
  • the center plate 4a and the dust seal 6a may be integrated with each other by arranging the arm portion 45.
  • the lower case 3 is provided with a plurality of through holes 39 in the circumferential direction passing through the bottom surface 38 of the annular recess 34 on which the center plate 4 is mounted and the lower surface 37 of the flange portion 32
  • a plurality of convex portions 43 disposed in the through holes 39 of the lower case 3 are provided on the back surface 41 of the plate 4 in the circumferential direction.
  • the present invention is not limited to this.
  • At least one through hole 39 may be provided on the bottom surface 38 of the annular recess 34 of the lower case 3, and correspondingly, at least one protrusion 43 may be provided on the back surface 41 of the center plate 4. Just do it.
  • At least one recess 390 not penetrating to the lower surface 37 of the flange portion 32 is provided in the bottom surface 38 of the annular recess 34 of the lower case 3b.
  • at the back surface 41 of the center plate 4b at least one convex portion 430 disposed in the concave portion 390 may be provided in the circumferential direction instead of the convex portion 43.
  • an arc-shaped slit passing through the bottom surface 38 of the annular recess 34 and the lower surface 37 of the flange portion 32 is formed in the lower case 3 along the circumferential direction.
  • an arc-shaped convex portion disposed in the arc-shaped slit may be formed on the center plate 4.
  • a plurality of recesses 341 formed in the bottom surface 38 of the annular recess 34 along the radial direction are provided in the circumferential direction instead of the through holes 39.
  • the convex portion 43 is replaced with a shape aligned with the concave portion 341 of the lower case 3c, and a plurality of convex portions 46 arranged in the concave portion 341 are formed on the back surface 41 along the circumferential direction.
  • annular notch 370 is provided on the outer peripheral edge of the lower surface 37 of the flange 32 and the dust seal 6b shown in FIG.
  • the lower end portion 63 of the dust seal main body 60 may be provided with an annular convex portion 64 extending radially inward from the inner circumferential surface 65, and the convex portion 64 may be disposed in the notch 370 of the lower case 3d.
  • the radial width of the bottom surface 38 of the annular recess 34 of the lower case 3 is the same as the radial width at the opening (upper surface 33 of the flange 32) of the annular recess 34 as an example. explained.
  • the present invention is not limited to this.
  • the radial width of the bottom surface 38 of the annular recess 34a of the lower case 3e is wider than the radial width on the opening side of the annular recess 34a, It may be formed in a groove shape, and the engaging portion 47 may be formed on the center plate 4d to be engaged with the dovetail annular recess 34a by two-color molding. By doing this, the center plate 4d can be structurally engaged with the lower case 3e, and the center plate 4d can be more effectively prevented from falling off the lower case 3e.
  • the through hole 39 formed on the bottom surface 38 of the annular recess 34a is formed into a cylindrical shape, and the convex portion 43 of the center plate 4d is fitted to the through hole 39.
  • the shape of the through hole 39 is not limited to a cylindrical shape, and may be a truncated cone shape, a truncated pyramid shape, or a prismatic shape.
  • the recesses 390 and the protrusions 430 shown in FIG. 10 may be used instead of the through holes 39 and the protrusions 43.
  • At least one slit 310 penetrating the upper surface 33 and the lower surface 37 of the flange portion 32 of the lower case 3e is disposed in the circumferential direction to perform two-color molding
  • An engagement portion 67 connected to the upper end portion 66 and the lower end portion 63 of the dust seal main body 60 of the dust seal 6 c is disposed in the slit 310.
  • the center plate 4 and the dust seal 6 are integrally formed with the lower case 3
  • the center plate 4 and the dust seal 6 may be integrally formed with the upper case 2.
  • the center plate 4e is disposed on the load transfer surface 27 of the annular recess 25 of the upper case 2a with the bearing surface 40 facing downward
  • the dust seal 6d has a lip portion It is arranged on the outer peripheral side inner wall 28 of the annular recess 25 of the upper case 2a with the radial direction 62 directed inward.
  • the sliding sheet 5 is disposed in the annular recess 34 of the lower case 3 f with the sliding surface 51 facing the bearing surface 40 of the center plate 4 e.
  • center plate 4e and the dust seal 6d are integrally formed with the upper case 2a.
  • the material of the lower case 3f may be impregnated with a lubricating oil as needed to improve the sliding characteristics.
  • the present invention is broadly applicable to load bearing sliding bearings in a variety of mechanisms, including vehicle suspensions.

Abstract

L'invention concerne un palier lisse et son procédé de fabrication, le nombre de composants et les coûts pouvant être réduits. Le palier lisse (1) comprend : un boîtier supérieur (2); un boîtier inférieur (3) combiné au boîtier supérieur (2); et une plaque centrale annulaire (4) disposée entre le boîtier supérieur (2) et le boîtier inférieur (3) et permettant une rotation relative entre le boîtier supérieur (2) et le boîtier inférieur (3). La plaque centrale (4) est formée d'un seul tenant avec le boîtier inférieur (3), et une résine synthétique ayant un point de fusion plus élevé qu'une résine synthétique utilisée dans le boîtier inférieur (3) formée d'un seul tenant avec la plaque centrale (4) et utilisée en tant que matériau de la plaque centrale.
PCT/JP2018/044437 2017-12-12 2018-12-03 Palier lisse et son procédé de fabrication WO2019116952A1 (fr)

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JP2017238154A JP2019105306A (ja) 2017-12-12 2017-12-12 滑り軸受およびその製造方法
JP2017-238154 2017-12-12

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WO2019116952A1 true WO2019116952A1 (fr) 2019-06-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11181147B2 (en) * 2017-12-12 2021-11-23 Oiles Corporation Sliding bearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023145096A (ja) * 2022-03-28 2023-10-11 オイレス工業株式会社 滑り軸受およびサスペンション

Citations (11)

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