CN104309433B - Thrust slide bearing and thrust slide bearing and the combined mechanism of piston rod - Google Patents

Abstract

A kind of thrust slide bearing (1) is provided with: the annular bearing body (4) that synthetic resin is made, it has annular upper surface (2) and annular engagement projection (3)；The annular bearing body (6) that synthetic resin is made；Thrust slide bearing made of synthetic resin part (7)；Annular upper portion lid (9), it has the engagement protrusion (8) that the annular engagement projection (3) with bearing body (4) coordinates；And annular metal sheet part (15), it is plugged between bearing body (6) and annular upper portion lid (9).

Description

Thrust slide bearing and thrust slide bearing and the combined mechanism of piston rod

The application is filing date JIUYUE in 2012 14 days, Application No. 201180014083.4 (PCT/JP2011/000867), application artificial " Oiles Industry Co., Ltd ", entitled " thrust slip Bearing and thrust slide bearing and the combined mechanism of piston rod " the division Shen of Chinese invention patent application Please.

Technical field

The present invention relates to a kind of thrust slide bearing, and relate more specifically to suitably consist of carriage The thrust slide bearing of the sliding bearing of B-C post type (strut-type) suspension (McPherson type), And the combined mechanism of thrust slide bearing and piston rod.

Background technology

The strut type suspension being used in the front-wheel of four-wheel car is generally of such structure: its B-C post Assembly includes and the hydraulic damper in main shaft shape all-in-one-piece outside cylinder, this strut assemblies and disc spring group Close.In these suspensions, there is such a type: when strut assemblies turns in steering operation together with disc spring Time dynamic, the piston rod rotation of strut assemblies, and an also type: wherein piston rod does not rotates.In office In what type, all there is such a case that the thrust slide bearing that synthetic resin is made replaces the axis of rolling Hold, be used in for strut assemblies being installed between the mechanism of vehicle body and the upper spring seat part of disc spring, from And enable strut assemblies successfully to rotate.

Prior art literature

Patent documentation

[patent documentation 1] JP-A-8-326758

[patent documentation 2] JP-A-2004-263773

[patent documentation 3] JP-A-2004-225754

[patent documentation 4] JP-A-2008-202703

Summary of the invention

The problem to be solved in the present invention

Incidentally, for strut assemblies being installed in the mechanism of vehicle body, installing plate is used for supporting One end of the piston rod of hydraulic damper, but in the case of this installing mechanism, not only need for supporting The installing plate of piston rod end, and structure is complicated, therefore required high cost.

About this problem, patent documentation 4 propose a kind of thrust slide bearing and this thrust slide bearing a kind of with The combined mechanism of piston rod, it can replace the installation of the mechanism for strut assemblies is installed to vehicle body One end of plate supporting piston bar, it is possible to simplify installing mechanism and realize cost reduce.

Thrust slide bearing according to this proposal includes: the annular bearing body that synthetic resin is made, this annular Bearing body has annular upper surface and annular engagement projection；Another annular bearing that synthetic resin is made is originally Body, this another annular bearing body is stacked on bearing body relatively to turn around the axis of this bearing body Dynamic, and there is the annular lower surface relative with the annular upper surface of bearing body；Thrust slide bearing device, This thrust slide bearing device is arranged under the annular upper surface of bearing body and the annular of another bearing body Between surface, and have in the annular lower surface of the annular upper surface with bearing body and another bearing body extremely At least one in a few lower surface slidably contacted with and upper surface；Annular upper portion lid, in this annular Portion's lid has the annular engagement projection of the annular engagement protrusions match with bearing body；And annular metal sheet, This annular metal sheet is arranged between the annular upper surface of another bearing body and the lower surface of annular upper portion lid, The lower surface of annular metal sheet is contacted with the annular upper surface of another bearing body, and make its upper surface with The lower surface contact of annular upper portion lid.In this thrust slide bearing, annular metal sheet is provided with annular inner circumferential Surface, the diameter of this annular inner peripheral surface is than the annular inner peripheral surface of two bearing bodies and annular upper portion lid Diameter is little, thus effectively overcomes the problems referred to above.

But, the thrust slide bearing owing to being proposed is arranged through nut peace at planar annular metallic plate Install to the threaded portion of piston rod, so when there being large force to be applied to annular metal sheet by piston rod, ring Shape metallic plate deformable, produces extraordinary noise when piston rod relatively rotates.

Consider that above-mentioned aspect designs the present invention, and its objective is to provide a kind of thrust slide bearing and a kind of this to push away Power sliding bearing and the combined mechanism of piston rod, even if it has large force to be applied to endless metal by piston rod Plate, it is also possible to prevent annular metal sheet from deforming and reduce the generation extraordinary noise when piston rod relatively rotates.

The method of solution problem

Sliding dynamic bearing according to the present invention includes: the annular clutch shaft bearing body that synthetic resin is made, institute State annular clutch shaft bearing body and there is annular upper surface and the first engagement protrusion；The annular that synthetic resin is made Two bearing bodies, described annular second bearing body is stacked on described clutch shaft bearing body with around described The axis of one bearing body relatively rotates, and has the described annular upper surface phase with described clutch shaft bearing body To annular lower surface；Thrust slide bearing device, described thrust slide bearing device is arranged on described first Between described annular upper surface and the described annular lower surface of described second bearing body of bearing body, and have Have with under the described annular of the described annular upper surface of described clutch shaft bearing body and described second bearing body At least one in lower surface that at least one in surface slidably contacts with and upper surface；Annular upper portion Lid, described annular upper portion lid has second that described first engagement protrusion with described clutch shaft bearing body coordinates Engagement protrusion；And annular metal sheet, described annular metal sheet is arranged on the annular of described second bearing body Between the lower surface of upper surface and described annular upper portion lid so that the lower surface of described annular metal sheet is with described The described annular upper surface contact of the second bearing body, and make the upper surface of described annular metal sheet and described ring The described lower surface contact of shape upper cap, wherein said annular upper portion lid includes Hollow cylinder section, described in Hollow cylindrical portion has the second engagement protrusion and first annular plate integral part of with described Hollow cylinder section Part；And described annular metal sheet includes: the second annular plate portion, described second annular plate portion and institute State the described annular upper surface of the second bearing body and the described first annular plate part of described annular upper portion lid Annular lower surface contact；3rd annular plate portion, described 3rd annular plate portion is arranged on by described annular In the through hole that the inner peripheral surface of the described first annular plate part of upper cap limits；And annular step portion, The side of described annular step portion and described second annular plate portion are integrally formed and opposite side and described the Three annular plate portion are integrally formed；Described 3rd annular plate portion is provided with annular inner peripheral surface, in described annular The diameter of perimeter surface is less than the internal diameter of the annular inner peripheral surface of described first and second bearing bodies.

According to the thrust slide bearing of the present invention, described annular metal sheet includes: the second annular plate portion, institute State the second annular plate portion and the described annular upper surface of described second bearing body and described first annular plate The annular lower surface contact of part；3rd annular plate portion, described 3rd annular plate portion is arranged on by described In the through hole that the inner peripheral surface of first annular plate part limits；And annular step portion, described ring-shaped step Side and described second annular plate portion of part are integrally formed and opposite side and described 3rd annular plate portion It is integrally formed.Therefore, the footing (rib) of the similar annular metal sheet of effect of annular step portion, Then, even if there being bigger vertical force to be applied to annular metal sheet by piston rod, it is also possible to prevent endless metal Plate deforms and reduces the extraordinary noise produced when piston rod relatively rotates due to annular metal sheet deformation.

In preferred embodiments, annular metal sheet has annular projection, this annular projection and the second annular plate portion Lower surface be integrally formed and coordinate with the annular outer peripheral surface of described second bearing body, thus keep described Annular metal sheet and the diametrically opposite position of described second bearing body.In another preferred embodiments, annular Upper cap has annular inner peripheral surface, and the annular outer peripheral surface of annular metal sheet connects with this annular inner peripheral surface Touch.In this example, annular metal sheet also can be arranged to not necessarily by bonding relative to annular upper portion lid Annular metal sheet is fixed to the second bearing body and annular upper portion lid by agent etc..Annular metal sheet is to the second axle Hold body and being fixed on of annular upper portion lid can realize by using binding agent etc. in some cases.But replace Generation ground or in combination, be fitted to through hole by projection or groove realize fixing.Projection and through hole or groove Quantity can be correspondingly odd number but it also may be two or more.

In the present invention, the annular outer peripheral surface of described second bearing body can have: major diameter outer surface Partly, diameter is less than described major diameter outer peripheral surface portion minor diameter outer peripheral surface portion, be plugged in described Annular surface between major diameter outer peripheral surface portion and described minor diameter outer peripheral surface portion, and annular is prominent Rise and may be adapted to coordinate with minor diameter outer peripheral surface portion.

Thrust slide bearing device can have the thrust slide bearing part that synthetic resin is made, this thrust sliding axle Bearing member is separated with clutch shaft bearing body and the second bearing body, or, alternately, thrust slide bearing Device can have the thrust slide bearing part that synthetic resin is made, itself and clutch shaft bearing body and the second bearing At least one in body forms one.

Two bearings body can be all made up of synthetic resin, synthetic resin include polyacetal resin, polyamide, At least one in thermoplastic polyester, vistanex, polycarbonate resin and fluororesin.Pushing away In the case of power sliding bearing is implemented by thrust slide bearing part, this thrust slide bearing part can be by closing Resin is made, and synthetic resin includes polyacetal resin, polyamide, thermoplastic polyester, gathers At least one in olefin resin and fluororesin.Each in the first and second bearing bodies, can make With with constitute thrust axis bearing member synthetic resin as synthetic resin, but especially with for thrust slide The synthetic resin of gratifying frictional behavior is presented when the synthetic resin of bearing part is used in combination.In order to right The example of its desirable combination illustrates, and can quote thrust slide bearing part and the first and second bearing bodies Below combination: polyacetal resin and the combination of polyamide；Vistanex, especially polyethylene tree Fat and the combination of polyacetal resin；Polyacetal resin and thermoplastic polyester, especially poly terephthalic acid The combination of butanediol ester resin；Polyacetal resin and the combination of polyacetal resin.

In preferred embodiments, annular upper portion lid is made up of thermoplastic synthetic resin, and thermoplastic synthetic resin is such as Polyacetal resin, polyamide and polybutylene terephthalate (PBT) resin, but the most alternately by The thermoplastic synthetic resin strengthened is made, and the most this thermoplastic synthetic resin is by such as glass fibre, glass The inorganic fillers such as powder, bead, carbon fiber are strengthened.In preferred embodiments, annular metal sheet by The steel plate that such as steel, rustless steel etc. are made is formed, but is the most alternately made by such as copper alloy, titanium alloy etc. The nonferrous alloy plate become is made.

Thrust slide bearing according to the present invention and the combined mechanism of piston rod, or be used in preferred embodiments The combined mechanism of the strut type suspension in four-wheel car, including: according to either side in aforementioned aspect Thrust slide bearing；And the piston rod of amortisseur.Here, described piston rod includes: major diameter portion Point, described diameter portion is arranged on and is limited by the annular inner peripheral surface of described first and second bearing bodies In through hole；Diameter is less than the small diameter portion of described diameter portion, and described small diameter portion is big straight with described Path portion forms one and is arranged in the through hole limited by the described inner peripheral surface of described annular metal sheet；With And threaded portion, it is formed in small diameter portion.Here, described annular metal sheet is at described 3rd ring It is sandwiched between the described diameter portion of described piston rod and described small diameter portion at shape plate part Annular step surface and and described threaded portion screw-threaded engagement nut annular surface between.This annular Metallic plate preferably by make hot rolled steel plate (SPHC: regular grade hot rolled steel plate) stand compressing and The annular metal sheet formed.In this case, at the 3rd annular plate portion at least by described piston rod The annular surface clamping of annular step surface between diameter portion and small diameter portion and described nut Held surface scribbles the ductile soft metal of such as zinc, copper or stannum etc preferably by plating.Due to There is provided this coat of metal, so being on the one hand the annular surface of annular step surface and nut, on the other hand It is that the held surface of the 3rd annular plate portion completely attaches to the most each other.Accordingly, because can keep away Exempt from localized contact and dispersive stress when being applied stress vertically by piston rod, so will not occur such as The damage to the 3rd annular plate portion ruptured etc.

Advantages of the present invention

In accordance with the invention it is possible to provide a kind of thrust slide bearing and this thrust slide bearing a kind of and piston rod Combined mechanism, even if there being bigger power to be applied to annular metal sheet by piston rod, it is also possible to prevent annular Metallic plate deforms and reduces owing to annular metal sheet deformation produces extraordinary noise when piston rod relatively rotates.

Accompanying drawing explanation

Fig. 1 is the positive view of the embodiment of the present invention；

Fig. 2 is the plane graph of embodiment illustrated in fig. 1；

Fig. 3 is the plane graph of thrust axis bearing member in embodiment illustrated in fig. 1；

Fig. 4 is the upward view of embodiment illustrated in fig. 1；

Fig. 5 is the front view of embodiment illustrated in fig. 1；

Fig. 6 is the enlarged partial sectional view of embodiment illustrated in fig. 1；And

Fig. 7 is the sectional view of the embodiment during wherein embodiment illustrated in fig. 1 is used in push type suspension.

Detailed description of the invention

Be given below based on preferred embodiment shown in accompanying drawing and implement being described in more detail of mode of the present invention.Should Noting, the present invention is not limited to this embodiment.

In Fig. 1 is to 6, the thrust slide bearing 1 of this embodiment includes: the annular shaft that synthetic resin is made Holding body 4, it has annular upper surface 2 and annular engagement projection 3；The annular bearing that synthetic resin is made Body 6, it is stacked on bearing body 4 relatively to turn around the axes O of bearing body 4 along R direction Dynamic, and there is the annular lower surface 5 relative with the annular upper surface 2 of bearing body 4；Ring-shaped synthetic resin The thrust slide bearing part 7 made, it is split and serve as being arranged on axle with bearing body 4 and bearing body 6 Hold the thrust slide bearing dress between the annular upper surface 2 of body 4 and the annular lower surface 5 of bearing body 6 Put；Annular upper portion lid 9, it has multiple (that is, in this embodiment three) engagement protrusion (cooperation pawl) 8, Engagement protrusion 8 coordinates with the engagement protrusion 3 of bearing body 4；And annular metal sheet 15, it has annular Plate part 14, this annular plate portion 14 is arranged on annular upper surface 10 and the annular upper portion lid of bearing body 6 Between the lower surface 13 of 9 so that its lower surface 11 contacts with the annular upper surface 10 of bearing body 6, and Its upper surface 12 is made to contact with the lower surface 13 of annular upper portion lid 9.

The heart has the bearing body 4 of through hole 20 and includes wherein: annular lower portion bearing main body 24, it has Annular upper surface 2, annular inner peripheral surface 21, annular outer peripheral surface 22 and annular lower surface 23；In annular Portion's ledge 25, it is formed integrally and table from annular with the annular upper surface 2 of lower bearing main body 24 Face 2 highlights towards annular lower surface 5；Hollow cylinder section 26, itself and the annular of lower bearing main body 24 Lower surface 23 forms one and is downwardly projected from the inside of annular lower surface 23；And annular, outer protuberance Dividing 27, it forms one and relative to inner projection with the annular upper surface 2 of lower bearing main body 24 25 are radially outward arranged.

The through hole 20 of bearing body 4 by annular inner peripheral surface 21 and Hollow cylinder section 26 with in annular The concordant annular inner peripheral surface 31 of perimeter surface 21 limits.Inner projection 25 weekly form in by annular The annular step portion 32 that the inside of the adjacent rings inner peripheral surface 21 of face 21 and annular upper surface 2 limits Radial outside on be integrally formed with annular upper surface 2, and include: cylindrical inner peripheral surface 33, it has The diameter bigger than the diameter of annular inner peripheral surface 21；Cylindrical peripheral surface 36, it divides with External protrusions Cylindrical inner peripheral surface 34 and annular upper surface 2 associated of 27 and limit annular groove 35；And circular top Surface 38, it is relative with annular lower surface 5, has annular between annular top 38 and annular lower surface 5 Gap 37.Hollow cylinder section 26 has annular outer peripheral surface 39, and has outside inner peripheral surface 34 Portion's ledge 27 includes annular top 41, and this annular top 41 is concordant with annular top 38 also Relative with annular lower surface 5, and between annular top 41 and annular lower surface 5, have annular gap 40. 27 integral part of engagement protrusion 3 are divided to include with External protrusions: annular lower surface 42 and annular following table The annular that the adjacent annular outer peripheral surface 43 in face 42 is adjacent with annular outer peripheral surface 43 tilts outer surface 44, annular inner peripheral surface 45 and with annular inner peripheral surface 45 and annular tilt outer surface 44 adjacent also Annular top 46 sandwiched therebetween.

Bearing body 6 includes upper bearing main body 53 and annular protruding portion 54, upper bearing main body 53 Have annular lower surface 5, annular upper surface 10, annular inner peripheral surface 51 and annular outer peripheral surface 52 and Wall ratio lower bearing main body 24 is thin；Annular protruding portion 54 and the annular following table of upper bearing main body 53 The inside in face 5 be integrally formed and from annular lower surface 5 towards the inner side of annular upper surface 2 ring-shaped step Part 32 overhangs downwards.

Annular protruding portion 54 includes: annular inner peripheral surface 56, and it is concordant with annular inner peripheral surface 51； Outer surface 58, its diameter less than inner peripheral surface 33 relative with inner peripheral surface 33, outer surface 58 and Annular gap 57 is had between inner peripheral surface 33；And annular top 60, its with annular upper surface 2 inside On the upper surface of annular step portion 32 relative, have annular gap 59 therebetween so that gap 57 and gap 37 connect with gap 59 and pass through gap 37 and connect with groove 35, simultaneously by gap 59 and ft connection. Therefore, groove 35 is by the inside labyrinth structure being made up of gap 37, gap 57 and gap 59 and outside Connection.The center that annular inner peripheral surface 51 is identical with through hole 20 with the diameter of 56 restriction bearing bodies 6 Through hole 65, and annular outer peripheral surface 52 includes: major diameter outer peripheral surface portion 67, itself and weekly form in annular Relatively, there is gap 66 in face 45 therebetween；Minor diameter outer peripheral surface portion 68, it has outer weekly form than major diameter The diameter that face part 67 is little；And annular surface 69, its between major diameter outer peripheral surface portion 67 with little directly Between footpath outer peripheral surface portion 68 and be perpendicular to axes O extend.

Dish type thrust slide bearing part 7 is radially arranged in inner projection part 25 and exterior protrusions part 27 Between groove 35 in and be radially positioned to make its annular inner peripheral surface 75 and its outer surface 76 respectively with The outer surface 36 of inner projection part 25 contacts with the inner peripheral surface 34 of exterior protrusions part 27, thus Relatively rotate along R direction.This dish type thrust slide bearing part 7 has: smooth annular upper surface 77 With lower surface 78, they respectively along R direction relatively the most slidably with table in planar annular lower surface 5 and annular Face 2 contacts；And the multiple groove 79 radially extended and the ring-shaped groove 80 connected with multiple grooves 79, Multiple grooves 79 and ring-shaped groove 80 are arranged in each surface in upper surface 77 and lower surface 78.With Annular lower surface 5 is identical with annular upper surface 2, and it is smooth that upper surface 77 and lower surface 78 are perpendicular to axes O Ground extends, and the lubricant of such as oils and fats etc is suitable to accumulate in each table in upper surface 77 and lower surface 78 In multiple grooves 79 in face and groove 80.Corresponding to the respective groove 79 of lower surface 78, upper surface The respective groove 79 of 77 is formed at same position, or the shape with fixing or angle changing displacement about R direction Become, the such as equal angles of 22.5 ° in the case of eight grooves.

Annular upper portion lid 9 includes Hollow cylinder section 90 and annular plate portion 98, Hollow cylinder section 90 There is engagement protrusion 8 and include cylindrical peripheral surface 85, cylindrical inner peripheral surface 86 and inner peripheral surface 86 continuous print annulars tilt inner peripheral surface 87 and tilt inner peripheral surface 87 continuous print annular lower surface 88, with And less than inner peripheral surface 86 diameter and with lower surface 88 continuous print cylinder inner peripheral surface 89, annular plate portion 98 with Hollow cylinder section 90 be integrally formed and have all be perpendicular to axes O extend planar annular lower surface 13 and annular upper surface 95 and tilt inner peripheral surface 97, this inclination inner peripheral surface 97 diameter is than interior weekly form Face 89 is little and continuous with upper surface 95 and lower surface 13.Outer surface 85 is by annular curved surface 99 Continuous with upper surface 98.

Engagement protrusion 8 respectively has the annular upper surface 102 relative with annular lower surface 42, has gap therebetween 101 can contact with annular lower surface, and engagement protrusion 8 is in the office, bottom of Hollow cylinder section 90 It is integrally formed with inner peripheral surface 86, thus radially-inwardly highlights from inner peripheral surface 86, make radial top surface 104 Relative with annular outer peripheral surface 22, have gap 103 therebetween, and about R direction with equal angles spacing between Separate, such as, be the angular interval of 120 ° in the case of three engagement protrusion.Inner peripheral surface 86, incline Tiltedly inner peripheral surface 87 and annular lower surface 88 tilt outer surface with annular outer peripheral surface 43, annular respectively 44 and annular top 46 relatively, be respectively provided with gap 105,106 and 107.With ft connection Gap 101 that gap 103 is introduced through, gap 105, gap 106, gap 107, gap 66 Connect with groove 35 with gap 40.Therefore, groove 35 by by gap 103,101,105,106, 107, the 66 and 40 outside labyrinth structure constituted and ft connection.

Annular metal sheet 15 also includes in addition to annular plate portion 14: annular plate portion 111, and it is arranged In the through hole 110 limited by the inclination inner peripheral surface 97 of annular plate portion 98 and scribble such as zinc, copper or The ductile soft metal of stannum etc；Annular step portion 112, its side is integrally formed with annular plate portion 14 And its opposite side is integrally formed with annular plate portion 111；And annular projection 113, itself and annular plate portion The outside of the lower surface 11 of 14 be integrally formed and be suitable to annular outer peripheral surface 52 with bearing body 6 little directly Footpath outer peripheral surface portion 68 coordinates, thus keeps the diametrically position of annular metal sheet 15 and bearing body 6 Put.Annular metal sheet 15 can scribble the ductile soft metal of such as zinc, copper or stannum etc on the whole.

Annular plate portion 111 has annular inner peripheral surface 114 and smooth annular upper surface 115, annular inner circumferential The diameter on surface 114 is than the annular inner peripheral surface 21 of bearing body 4 and 31 and the annular of bearing body 6 The interior diameter of inner peripheral surface 51 and 56 is little, and planar annular upper surface 115 is substantially concordant with upper surface 95 Or axes O extension it is perpendicular to from the position more slightly lower than upper surface 95.There is annular inclined outer surface 116 With annular circular arc inner surface 117 annular step portion 112 radially inwardly and upwardly tilt and from annular slab Part 14 extends to annular plate portion 111, thus in annular inclined outer surface 116 and inclination inner peripheral surface The least gap 118 is formed between 97.Annular inner peripheral surface 114 limits in annular metal sheet 15 Heart through hole 119, it is arranged with the axes O identical with the axis of through hole 65 and 20.

In above-mentioned thrust slide bearing 1, bearing body 4 and annular upper portion lid 9 utilize the soft of synthetic resin Property by annular engagement projection 8 relative to annular engagement projection 3 wedged type coordinate and parallel connection stacked on top of each other Connect so that thrust axis bearing member 7, bearing body 6 and annular metal sheet 15 the most stacked on top of each other are clipped in Between them.Relatively rotate around axes O along R direction relative to bearing body 6 at bearing body 4 Time, between the upper surface 77 and the annular lower surface 5 of upper bearing body 53 of thrust slide bearing part 7 There is low Frictional Slipping or the annular of lower surface 78 and lower bearing main body 24 at thrust slide bearing part 7 There is low Frictional Slipping between upper surface 2, thus make bearing body 4 can relative to bearing body 6 around Axes O relatively rotates along R direction with the minimum frictional resistance of generation.

As it is shown in fig. 7, the strut type suspension 123 of vehicle is being installed on car body by installing mechanism 124 Time use this thrust slide bearing 1, strut type suspension includes the hydraulic shock-absorption wherein with piston rod 121 Device (not shown) and the disc spring 122 being arranged about this hydraulic damper.

The strut type suspension 123 of vehicle (such as four-wheel car) is except hydraulic damper and disc spring 122 Outside also include for receiving the upper springs seat component 125 of one end of disc spring 122 and being arranged about The beam (bump stopper) 126 of piston rod 121.Installing mechanism 124 includes elastic component 128 And distance piece 129, elastic component 128 has been embedded in core metal part 117, and distance piece 129 is arranged on spring Between seat component 125 and the annular lower surface 23 of lower bearing body 24.Thrust slide bearing 1 is worn Super-interval part 128 is arranged on the elastic component 129 of installing mechanism 124 and the top of strut type suspension 123 Between component of the spring seat 125.Additionally, the end portion of Hollow cylinder section 26 inserts upper springs In the central through hole of seat component 125, thus from there through upper springs seat component 125 about being perpendicular to The location, direction of axes O, and the outer weekly form of the inner peripheral surface of distance piece 129 and Hollow cylinder section 26 Face 39 contacts.The elastic component 128 of fenced thrust slide bearing 1 is arranged to and annular upper portion lid 9 Outer surface 85, upper surface 95 contact with curved surface 99.

Piston rod 121 includes: diameter portion 131, and it is by arranging through through hole 20 and 65；Little directly Path portion 132, its diameter is less than diameter portion 131 and forms one with diameter portion 131 and passes through Arrange through through hole 119；And threaded portion 133, it is formed in small diameter portion 132.At it The annular metal sheet 115 of the ductile soft metal that annular plate portion 111 scribbles such as zinc, copper or stannum etc presss from both sides It is the ring-shaped step table between the diameter portion 131 of piston rod 121 and small diameter portion 132 on the one hand Face 134 and on the other hand be and threaded portion 133 screw-threaded engagement nut 135 annular surface 136 between.

Diameter portion 131 is at its outer surface 138 and annular inner peripheral surface 21 and 31 is along R direction Contact rotationally, and the annular inner peripheral surface 138 of elastic component 128 contacts with the outer surface of nut 135. It is clipped in the ring between annular groove ledge surface 134 and annular surface 136 by means of its annular plate portion 111 Shape metallic plate 15, fixed bearing body 6 and annular upper portion lid 9 by elastic component 128, thus not along R Direction rotates.

In the combinations thereof mechanism of thrust slide bearing 1 and piston rod 121, when making dish by steering operation Spring 122 around axes O rotate along R direction time, bearing body 4 similarly relative to bearing body 6 along R Direction relatively rotates.By the thrust slide bearing part being arranged between bearing body 4 and bearing body 6 7 rotations successfully realizing bearing body 4, thus unhinderedly carry out steering operation.

According to this thrust slide bearing 1, the annular metal sheet 15 being provided with annular inner peripheral surface 114 sets Put between the annular upper surface 10 and the lower surface 13 of annular upper portion lid 9 of bearing body 6 so that under it Surface 11 contacts with the annular upper surface 10 of bearing body 6, and its upper surface 12 and annular upper portion lid 9 Lower surface 13 contact, wherein the diameter of annular inner peripheral surface 114 is less than bearing body 4 and 6 and ring The diameter of the annular inner peripheral surface 21,31,51 and 56 of shape upper cap 9.Therefore, piston rod 121 One end can be supported by this annular metal sheet 15, and can be in the mechanism for strut assemblies is installed to car body Middle removal, for the installing plate of supporting piston bar 121 one end, it is possible to simplify installing mechanism and realize cost Reduce.

Additionally, according to this thrust slide bearing 1, owing to annular metal sheet 15 has and annular upper surface 10 annular plate portion 14 contacted with annular lower surface 13, it is arranged in the inclination by annular plate portion 98 Annular plate portion 111 in the through hole 110 that perimeter surface 97 limits and side and annular plate portion 14 1 Body is formed and opposite side and the integral part of annular step portion of annular plate portion 111 112, so annular table The effect of exponent part 112 is similar to the footing of annular metal sheet 15.Then, even if having the most vertical It is applied to annular metal sheet 15 by piston rod 121, it is also possible to prevent annular metal sheet 15 from deforming also to power Reduce the extraordinary noise produced when piston rod 121 relatively rotates along R direction.Additionally, due to annular slab portion Divide the 111 ductile soft metals scribbling such as zinc, copper or stannum etc, so being on the one hand annular step surface 134 and annular surface 136, the ring on the other hand clamped by annular step surface 134 and annular surface 136 The clamping surface of shape plate part 111 substantially completely contacts with each other.Accordingly, because it can be avoided that when by living Stopper rod 121 applies localized contact and dispersive stress during stress vertically, so will not occur such as to rupture etc The damage to annular plate portion 111.

Additionally, according to thrust slide bearing 1, due to groove 35 by gap 103,101,105,106, 107, the 66 and 40 outside labyrinth structure formed and ft connection, invades it is possible to be effectively prevented muddy water etc. Enter groove 35, and bearing body 4 can be kept by thrust slide bearing part in over a long time relative to bearing 6 7 along R direction smooth rotation.

Above-mentioned thrust slide bearing 1 is to provide and bearing body 4 and bearing body 6 separate thrust sliding axle Bearing member 7 is as the example of thrust slide bearing device, but also can alternatively provide up and the annular of bearing body 4 At least one shape all-in-one-piece synthetic resin in the annular lower surface 5 of upper surface 2 and bearing body 6 is made Collar thrust bearing part as thrust slide bearing device.

The explanation of reference

1: thrust slide bearing

2: annular upper surface

3: engagement protrusion

4: bearing body

5: annular lower surface

6: bearing body

7: thrust slide bearing part

8: engagement protrusion

9: annular upper portion lid

10: annular upper surface

11,13: lower surface

12: upper surface

14: annular plate portion

15: annular metal sheet

Claims (4)

1. a thrust slide bearing, including: the annular clutch shaft bearing body that synthetic resin is made, described ring Shape clutch shaft bearing body has annular upper surface and the first engagement protrusion；Annular the second axle that synthetic resin is made Holding body, described annular second bearing body is stacked on described clutch shaft bearing body with around described first axle The axis holding body relatively rotates, and has relative with the described annular upper surface of described clutch shaft bearing body Annular lower surface；Thrust slide bearing device, described thrust slide bearing device is arranged on described clutch shaft bearing Between described annular upper surface and the described annular lower surface of described second bearing body of body, and have with The described annular upper surface of described clutch shaft bearing body and the described annular lower surface of described second bearing body In at least one lower surface slidably contacted with and at least one in upper surface；Annular upper portion lid, institute State annular upper portion lid and there is the second cooperation that described first engagement protrusion with described clutch shaft bearing body coordinates Projection；And annular metal sheet, described annular metal sheet is arranged on table in the annular of described second bearing body Between the lower surface of face and described annular upper portion lid so that the lower surface of described annular metal sheet and described second The described annular upper surface contact of bearing body, and make in upper surface and the described annular of described annular metal sheet The described lower surface contact of portion's lid, wherein said annular upper portion lid includes Hollow cylinder section, described hollow circle Cylinder part has described second engagement protrusion and first annular plate integral part of with described Hollow cylinder section Part, and described annular metal sheet includes: the second annular plate portion, described second annular plate portion and institute State the described annular upper surface of the second bearing body and the described first annular plate part of described annular upper portion lid Annular lower surface contact；3rd annular plate portion, described 3rd annular plate portion is arranged on by described annular In the through hole that the inner peripheral surface of the described first annular plate part of upper cap limits；And annular step portion, The side of described annular step portion and described second annular plate portion are integrally formed and opposite side and described the Three annular plate portion are integrally formed, and described 3rd annular plate portion is provided with annular inner peripheral surface, in described annular The diameter of perimeter surface is less than the internal diameter of the annular inner peripheral surface of described first and second bearing bodies,

Wherein, described annular metal sheet has annular projection, described annular projection and described second annular slab portion The lower surface divided is integrally formed, and coordinates with the annular outer peripheral surface of described second bearing body, thus protects Hold described annular metal sheet and the diametrically opposite position of described second bearing body, and

Wherein, the described annular outer peripheral surface of described second bearing body has: major diameter outer peripheral surface portion, Minor diameter outer peripheral surface portion that diameter is less than described major diameter outer peripheral surface portion, it is plugged in described major diameter Annular surface between outer peripheral surface portion and described minor diameter outer peripheral surface portion, and described annular projection Be suitable to coordinate with described minor diameter outer peripheral surface portion.

2. thrust slide bearing and a combined mechanism for piston rod, including: as claimed in claim 1 Thrust slide bearing；And the piston rod of amortisseur, wherein said piston rod includes: diameter portion, institute State diameter portion and be arranged on the through hole limited by the annular inner peripheral surface of described first and second bearing bodies In；Diameter is less than the small diameter portion of described diameter portion, described small diameter portion and described major diameter portion Fractal integral and be arranged in the through hole limited by the described inner peripheral surface of described annular metal sheet；And shape Becoming the threaded portion in described small diameter portion, wherein said annular metal sheet is in described 3rd annular slab portion Office is sandwiched between the annular table between the described diameter portion of described piston rod and described small diameter portion Surface, rank and and described threaded portion screw-threaded engagement nut annular surface between.

3. thrust slide bearing as claimed in claim 2 and the combined mechanism of piston rod, it is characterised in that In described 3rd annular plate portion of described annular metal sheet, by the described diameter portion of described piston rod And the described annular step surface between described small diameter portion and the described annular surface clamping of described nut Held surface scribble ductile soft metal.

4. thrust slide bearing as claimed in claim 2 or claim 3 and the combined mechanism of piston rod, its feature exists In, described mechanism is used in the strut type suspension in four-wheel car.