WO2019013142A1 - Spring seat and bearing device - Google Patents

Spring seat and bearing device Download PDF

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Publication number
WO2019013142A1
WO2019013142A1 PCT/JP2018/025796 JP2018025796W WO2019013142A1 WO 2019013142 A1 WO2019013142 A1 WO 2019013142A1 JP 2018025796 W JP2018025796 W JP 2018025796W WO 2019013142 A1 WO2019013142 A1 WO 2019013142A1
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WO
WIPO (PCT)
Prior art keywords
spring seat
bearing
coil spring
spring
mounting hole
Prior art date
Application number
PCT/JP2018/025796
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French (fr)
Japanese (ja)
Inventor
山田　智博
五十嵐　美照
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オイレス工業株式会社
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Publication of WO2019013142A1 publication Critical patent/WO2019013142A1/en

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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
    • B60G15/07—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings

Definitions

  • the present invention relates to a bearing device for supporting a load of a vehicle body applied to a suspension having a shock absorber and a coil spring, and more particularly to a spring seat of the bearing device which functions as a spring seat of the coil spring.
  • a strut type suspension (MacPherson strut) used for a front wheel of an automobile includes a shock absorber and a coil spring disposed around the shock absorber, and the coil spring attaches the strut type suspension to the vehicle body by a steering operation.
  • a thrust bearing device is usually disposed between the upper mount and the coil spring in order to support the load applied to the strut type suspension while allowing the relative rotation smoothly.
  • Patent Document 1 discloses, as a thrust bearing device for a strut type suspension, bearings such as rolling bearings and sliding bearings, and a synthetic resin spring seat (cup) functioning as a spring seat of a coil spring.
  • the spring seat has an upper surface including a contact portion with the lower surface of the bearing, and a lower surface including an annular support portion supporting the upper end of the coil spring.
  • the contact portion with the lower surface of the bearing is composed of radial, circular, concentric, etc. ribs.
  • the spring seat forms an annular support portion, and further has an annular fold portion forming a cylindrical accommodation portion for accommodating the upper end portion of the rubber bump stopper inside the support portion.
  • a discharge orifice for discharging the liquid accumulated on the upper surface side to the lower surface side is formed in the folded portion. Furthermore, the spring seat has a lug which engages with the outer peripheral skirt of the upper case (cover for protection) of the bearing to form a labyrinth seal.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a spring seat and a bearing device capable of suppressing the wear of the spring seat.
  • a mounting hole for mounting a bearing is formed through the upper surface and the lower surface, and the inner peripheral surface of the mounting hole is circumferentially
  • a plurality of guide grooves arranged side by side were formed along the axis.
  • the groove depth of at least one guide groove may be made shallower from the upper surface side toward the lower surface side.
  • the spring seat of the present invention is A synthetic resin spring seat which functions as a spring seat of the coil spring of a suspension having a shock absorber and a coil spring, An upper surface located on an upper mount side for attaching the suspension to a vehicle body; A lower surface located on the coil spring side; A support formed on the lower surface and supporting an upper end of the coil spring; And a mounting hole penetrating the upper surface and the lower surface for mounting a bearing,
  • the inner circumferential surface of the mounting hole is A plurality of guide grooves arranged in the circumferential direction are formed along the axial center.
  • the bearing device of the present invention is A bearing device for supporting a load applied to a suspension having a shock absorber and a coil spring, comprising: Said spring seat, And a bearing disposed between the upper mount for attaching the suspension to the vehicle body and the spring seat, and allowing relative rotation of the spring seat relative to the upper mount.
  • the bearing is A plurality of turns are formed along the circumferential direction on the outer peripheral surface of the bearing, and inserted into the guide groove formed on the inner peripheral surface of the mounting hole when mounted in the mounting hole of the spring seat Have a stop.
  • a plurality of guide grooves arranged in the circumferential direction are formed along the axial center on the inner peripheral surface of the mounting hole to which the bearing of the spring seat is mounted. For this reason, when the outer circumferential surface of the bearing is mounted in the mounting hole of the spring seat, the bearing can be prevented from rotating with respect to the spring seat by providing the rotation stop inserted in the guide groove. . Therefore, according to the present invention, wear of the spring seat can be suppressed. In addition, if the bearing is made of synthetic resin, wear of the bearing can be suppressed.
  • the rotation stopper inserted in the guide groove becomes a mesh with respect to the guide groove, Is fixed to the spring seat to prevent rattling between the spring seat and the bearing. Therefore, in this case, generation of abnormal noise can be further prevented.
  • FIG. 1 (A), 1 (B) and 1 (C) are a plan view, a bottom view and a front view of a bearing device 1 according to an embodiment of the present invention
  • FIG. 1 (D) is FIG. 2 is a cross-sectional view of the bearing device 1 shown in FIG. 2 (A) and 2 (B) are a plan view and a bottom view of the spring sheet 2
  • FIGS. 2 (C) and 2 (D) are BB of the spring sheet 2 shown in FIG. 2 (A).
  • 3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the sliding bearing 3
  • FIG. 3 (D) is a sliding bearing shown in FIG. 3 (A).
  • FIG. 7 is an enlarged view of a cross section D-D of FIG.
  • FIG. 4 is a schematic cross-sectional view of a strut type suspension 4 to which a bearing device 1 according to an embodiment of the present
  • FIG. 1 (A), FIG. 1 (B) and FIG. 1 (C) are a plan view, a bottom view and a front view of the bearing device 1 according to the present embodiment, and FIG. FIG. 2 is a cross-sectional view of the bearing device 1 shown in FIG.
  • the bearing device 1 is a device for supporting a load applied to the strut type suspension 4 (see FIG. 4) while allowing rotation around the axis, and as shown in FIG. And a sliding bearing 3 mounted on the spring seat 2.
  • FIGS. 2 (C) and 2 (D) are BB of the spring sheet 2 shown in FIG. 2 (A). It is sectional drawing and CC sectional drawing.
  • the spring sheet 2 is formed of a high strength thermoplastic resin such as a polyamide resin containing glass, and as shown in the drawing, the upper surface 20 including the annular mounting surface 200 on which the sliding bearing 3 is mounted, and the strut type suspension 4
  • the lower surface 21 includes an annular support surface 210 supporting the upper end of the coil spring 42 (see FIG. 4), and the lower surface 21 is formed to receive the upper end of the bump stopper 43 (see FIG. 4) of the strut type suspension 4.
  • a cylindrical housing portion 22 is provided.
  • ribs 201 are radially formed around the mounting surface 200, whereby a meat theft 202 is formed between the adjacent ribs 201.
  • a meat theft 202 is formed between the adjacent ribs 201.
  • FIG. 2 only some of the ribs 201 and the meat theft 202 are denoted by reference numerals.
  • a mounting hole 23 for mounting a lower case 31 described later of the slide bearing 3 is formed through the lower surface 21 so that the housing portion 22 and the axial center O coincide with each other.
  • the inner peripheral surface 230 of the mounting hole 23 has a guide groove 231 having a constant groove depth d1 along the axial center O, and a tapered guide whose groove depth d2 decreases as going from the upper surface 20 side to the lower surface 21 side.
  • a plurality of grooves 232 are alternately formed at equal intervals in the circumferential direction.
  • a rotation stop 314 of the lower case 31 of the slide bearing 3 described later is inserted.
  • the lower case 31 is fixed to the spring seat 2 by the rotation stopper 314 inserted in the tapered guide groove 232 becoming a part of the tapered guide groove 232, and the space between the spring seat 2 and the slide bearing 3 is fixed. It is possible to prevent the generation of abnormal noise due to rattling.
  • reference numerals are given only to some of the guide grooves 231 and the tapered guide grooves 232.
  • a drain hole 204 for draining the liquid accumulated in the meat theft 202 is formed in the bottom surface 203 of the meat theft 202 through the end surface 220 of the housing 22.
  • the drainage hole 204 has a small diameter portion 205 formed on the bottom surface 203 side of the meat theft 202 and a large diameter portion 206 formed on the end surface 220 side of the accommodation portion 22 and having an inner diameter larger than the small diameter portion 205.
  • the small diameter portion 205 is tapered so that the inner diameter decreases as it approaches the end surface 220 side of the housing portion 22, and the large diameter portion 206 tapers so that the inner diameter decreases as it approaches the bottom surface 203 side of the meat steal 202 Is attached. And both are mutually connected in the state which mutual axial center (The axial center C1 of the small diameter part 205, and the axial center C2 of the large diameter part 206) shifted
  • the inner diameter of the small diameter portion 205 located on the bottom surface 203 side of the meat theft 202 is made smaller than the inner diameter of the large diameter portion 206 located on the end surface 220 side of the accommodation portion 22, Since the axis C2 of the large diameter portion 206 is offset from the lower side (the end face of the housing portion 22 without reducing the inner diameter of the small diameter portion 205 so as to affect the drainage property of the liquid accumulated in the meat theft 202). The force of water entering the large diameter portion 206 from the side 220) can be reduced to prevent the liquid from entering the meat theft 202 from the lower side.
  • a plurality of inward protruding protrusions 222 are formed on the inner circumferential surface 221 of the housing 22 at equal intervals in the circumferential direction.
  • the protrusion 222 presses the bump stopper 43 accommodated in the accommodation portion 22 radially inward and fixes it.
  • window holes 207 are formed in the upper surface 20 corresponding to the individual projections 222 to receive the projections 222 in a frame on an imaginary plane perpendicular to the axial center O.
  • FIG. 3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the sliding bearing 3, and FIG. 3 (D) is a sliding bearing shown in FIG. 3 (A).
  • FIG. 7 is an enlarged view of a cross section D-D of FIG.
  • the slide bearing 3 has a tubular shape in which the annular upper case 30 and the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 are inserted, and is rotatably combined with the upper case 30.
  • the upper case 30 is formed of a high strength thermoplastic resin such as a polyamide resin containing glass, and the upper surface 300 thereof is a mounting surface 301 to the upper mount 5 (see FIG. 4) for mounting the strut type suspension 4 to the vehicle body. Is formed.
  • a mounting hole 303 for mounting the metal washer 33 is formed in the lower surface 302 of the upper case 30 so as to penetrate the upper surface 300, and the upper surface 330 of the metal washer 33 is formed around the mounting hole 303 of the lower surface 302.
  • An annular lower surface 304 is formed in contact therewith.
  • Lower case 31 the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 is inserted.
  • Lower case 31 is formed of a thermoplastic resin having excellent sliding characteristics, such as polyacetal resin impregnated with lubricating oil if necessary, and annular upper surface 311 on which center plate 32 is mounted on the upper end surface 310. Is formed.
  • a flange portion 313 is formed which comes into contact with the mounting surface 200 of the upper surface 20 of the spring seat 2 when the slide bearing 3 is mounted on the spring seat 2.
  • the slide bearing 3 is mounted on the spring seat 2 on the outer peripheral surface 312, it is inserted into the guide groove 231 or the tapered guide groove 232 formed on the inner peripheral surface 230 of the mounting hole 23 of the spring seat 2.
  • a plurality of detents 314 are formed at equal intervals in the circumferential direction.
  • the center plate 32 is formed of a resin having excellent sliding characteristics, such as polyethylene and thermoplastic polyester elastomer, and is disposed between the annular lower surface 304 of the upper case 30 and the annular upper surface 311 of the lower case 31. Thereby, the upper case 30 and the lower case 31 relatively rotate via the center plate 32.
  • a resin having excellent sliding characteristics such as polyethylene and thermoplastic polyester elastomer
  • the metal washer 33 is disposed between the annular lower surface 304 of the upper case 30 and the upper surface 320 of the center plate 32, and the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 is inserted.
  • the metal washer 33 is formed of a steel plate such as steel or stainless steel, or a non-ferrous alloy plate such as a copper alloy or a titanium alloy, and the cylindrical boss portion 331 attached to the mounting hole 303 of the upper case 30 is formed on the upper surface 330 thereof. Is formed.
  • FIG. 4 is a schematic cross-sectional view of a strut type suspension 4 to which the bearing device 1 according to the present embodiment is applied.
  • the bearing device 1 is attached to, for example, a strut type suspension 4 of an automobile including a shock absorber 41 and a coil spring 42 disposed around the shock absorber 41.
  • the strut type suspension 4 to which the bearing device 1 is attached is attached to the vehicle body (not shown) via the upper mount 5.
  • the shock absorber 41 includes a piston rod 40 and a bump stopper 43 arranged to surround the piston rod 40.
  • the upper mount 5 is made of an elastic member 50 such as rubber in which a core metal 51 is embedded, and accommodates the slide bearing 3 in contact with the mounting surface 301 of the upper case 30 of the slide bearing 3.
  • the bearing device 1 including the spring seat 2 and the slide bearing 3 is disposed between the upper mount 5 and the coil spring 42, and in a state where the piston rod 40 is inserted into the slide bearing 3, the support surface 210 of the spring seat 2 While supporting the upper end portion of the coil spring 42, the accommodation portion 22 of the spring seat 2 accommodates the upper end portion of the bump stopper 43.
  • the piston rod 40 is integrally formed with the large diameter portion 400 inserted into the lower case 31 of the slide bearing 3 and the large diameter portion 400, and is inserted into the metal washer 33.
  • the small diameter portion smaller than the large diameter portion 400 And a threaded portion 402 formed in the small diameter portion 401.
  • the large diameter portion 400 of the piston rod 40 rotatably contacts the inner circumferential surface 315 of the lower case 31 in the circumferential direction R.
  • a nut 6 is screwed into the threaded portion 402 of the small diameter portion 401 of the piston rod 40.
  • the nut 6 is screwed into the screw portion 402 and fixed to the piston rod 40, and is accommodated in the upper mount 5 so as not to rotate in the circumferential direction R with respect to the upper mount 5.
  • the metal washer 33 of the slide bearing 3 is held between the step surface 403 formed between the large diameter portion 400 and the small diameter portion 401 of the piston rod 40 and the nut 6 screwed to the screw portion 402. There is.
  • the upper case 30 is pushed to the upper mount 5 by the metal washer 33 fixed to the stepped surface 403 of the piston rod 40 by the strut type suspension 4 being attached to the upper mount 5 via the slide bearing 3. It is applied. Thus, relative rotation between the upper case 30 and the metal washer 33 is prevented, and the upper case 30 is held by the upper mount 5 so as not to rotate in the circumferential direction R with respect to the piston rod 40.
  • lower case 31 is mounted on spring seat 2 in a state where relative rotation between lower case 31 and spring seat 2 is blocked, and rotates in the circumferential direction R along spring seat 2.
  • the spring seat 2 supporting the coil spring 42 and the lower case 31 of the slide bearing 3 are also coil springs. 42 rotates in the circumferential direction R together with 42.
  • the metal washer 33 and the upper case 30 of the slide bearing 3 are held by the upper mount 5 so as not to rotate in the circumferential direction R with respect to the piston rod 40.
  • the metal washer A relative rotation in the circumferential direction R occurs between the lower case 33 and the upper case 30 and the lower case 31.
  • the relative rotation is smoothly performed by the center plate 32 disposed between the annular upper surface 311 of the lower case 31 and the metal washer 33, whereby the steering operation is also performed without resistance.
  • the bearing device 1 allows the spring seat 2 to move the strut type suspension 4 through the coil spring 42 while allowing the sliding bearing 3 to turn the coil spring 42 in the circumferential direction R with respect to the upper mount 5. Support the applied vehicle load.
  • the inner circumferential surface 230 of the mounting hole 23 of the spring seat 2 is a guide groove 231 having a constant groove depth d1 and a groove from the upper surface 20 side toward the lower surface 21 side.
  • a plurality of tapered guide grooves 232 having a shallow depth d2 are provided alternately at equal intervals in the circumferential direction, and the lower case 31 of the sliding bearing 3 is stopped 314 in these guide grooves 231 and the tapered guide grooves 232. Is inserted.
  • lower case 31 is prevented from rotating with respect to mounting surface 200 of spring seat 2, and lower case 31 and spring seat 2 wear due to the sliding therebetween. Can be prevented.
  • the lower case 31 is fixed to the spring seat 2 by the rotation stopper 314 inserted in the tapered guide groove 232 becoming a part of the tapered guide groove 232, and the space between the spring seat 2 and the slide bearing 3 is fixed. It is possible to prevent the generation of abnormal noise due to rattling.
  • the plurality of ribs 201 are radially formed around the mounting surface 200 of the spring sheet 2, and the meat theft 202 is provided between the adjacent ribs 201. Thereby, weight saving can be achieved while maintaining the strength of the spring seat 2.
  • the bump stopper 43 housed in the housing portion 22 is fixed by the projection 222 provided on the inner peripheral surface 221 of the housing portion 22 of the spring seat 2, so the housing portion of the spring seat 2 is It is not necessary to set the inner diameter of 22 to the outer diameter of the bump stopper 43 over the entire circumference. Therefore, the pressure required for inserting the upper end of the bump stopper 43 into the housing portion 22 of the spring seat 2 is lowered to reduce resistance as compared with the case where the inner diameter of the housing portion 22 is set to the entire circumference. It can be made smaller. Therefore, according to the present embodiment, the workability of the mounting operation to the bump stopper 43 can be improved.
  • a window hole is formed on the upper surface of the spring seat 2 so as to penetrate to the lower surface 21 corresponding to each protrusion 222 and store the protrusion 222 in a frame in a virtual plane perpendicular to the axis O 207 is provided. Therefore, the protrusion 222 can be formed without using a slide mold, using two molds (upper mold and lower mold) that move relative to each other in the axial center O direction. Therefore, according to the present embodiment, the workability of the mounting operation on the bump stopper 43 can be improved without increasing the cost.
  • the bottom surface 203 of the meat theft 202 of the spring seat 2 is provided with a drainage hole 204 for draining the liquid accumulated in the meat theft 202.
  • the axial center C1 of the small diameter portion 205 located on the bottom surface 203 side and the axial center C2 of the large diameter portion 206 located on the end surface 220 side of the accommodation portion 22 are shifted. For this reason, the water entering the large diameter portion 206 from the lower side (the end surface 220 side of the housing portion 22) without reducing the inner diameter of the small diameter portion 205 so as to affect the drainage property of the liquid accumulated in the meat theft 202 To prevent the infiltration of liquid from below into meat theft 202. Therefore, according to the present embodiment, it is possible to prevent the entry of the liquid from the lower side while maintaining the drainability of the liquid accumulated in the meat theft 202.
  • the small diameter portion 205 is tapered so that the inner diameter decreases as it approaches the end surface 220 side of the accommodation portion 22, and the large diameter portion 206 is inner diameter as the bottom surface 203 of the meat steal 202 approaches. Is tapered so that For this reason, while maintaining the drainability of the liquid accumulated in the meat theft 202, it is possible to more effectively prevent the liquid from invading from the lower side.
  • the spring seat 2 of the present embodiment unlike the spring seat described in Patent Document 1, since the annular folded portion is not provided, the strength reduction of the spring seat 2 can be prevented.
  • a plurality of guide grooves 231 and tapered guide grooves 232 are alternately formed at equal intervals in the circumferential direction on the inner circumferential surface 230 of the mounting hole 23 of the spring seat 2.
  • a plurality of detents 314 are formed on the outer peripheral surface 312 of the lower case 31 of the slide bearing 3 at equal intervals in the circumferential direction, but the present invention is not limited to this.
  • the guide groove 231 and the tapered guide groove 232 may be formed along the circumferential direction on the inner peripheral surface 230 of the mounting hole 23 of the spring seat 2, and according to this, the rotation stopper 314 also is a slide bearing It is only necessary to form a plurality on the outer peripheral surface 312 of the lower case 31 of No.
  • the tapered guide groove 232 may be omitted. Even in this case, the lower case 31 can be prevented from rotating with respect to the mounting surface 200 of the spring seat 2, and the lower case 31 and the spring seat 2 can be prevented from being worn by sliding therebetween. .
  • the inner diameter of the upper portion (small diameter portion 205) located on the bottom surface 203 side of the meat theft 202 is located on the end surface 220 side of the accommodation portion 22 (large diameter portion 206).
  • the present invention is not limited thereto.
  • the inner diameters of both may be the same, or the upper inner diameter may be larger than the lower inner diameter.
  • the drainage hole 204 does not have to be a circular hole, and may have another shape such as a square hole.
  • the upper end portion of the coil spring 42 is in direct contact with the support surface 210 of the spring seat 2, the lower surface 21 of the spring seat 2 or the lower surface 21 of the spring seat 2 and the accommodation portion 22
  • a shock absorbing material made of rubber, elastomer or the like covering the outer peripheral surface may be provided, and the upper end portion of the coil spring 42 may be brought into contact with the support surface 210 of the spring seat 2 via this shock absorbing material.
  • the shock absorbing material may be integrated with the spring seat 2 or may be separate.
  • the slide bearing 3 was used was mentioned as an example and demonstrated in said embodiment as a bearing combined with the spring seat 2, this invention is not limited to this.
  • the bearing should just be able to allow rotation of the coil spring 42 in the circumferential direction R with respect to the upper mount 5, and may be, for example, a rolling bearing.
  • rolling members such as a plurality of balls and rollers function as shaft members.
  • the present invention is not limited to a strut type suspension, and can be widely applied to a bearing device for supporting a load applied to a suspension having a shock absorber and a coil spring.

Abstract

A spring seat and bearing device are provided which can suppress wear. The spring seat (2) functions as the spring seat of a coil spring in a slat suspension comprising a shock absorber and a coil spring, and is provided with a top surface (20) positioned on the upper mount side for attaching the slat suspension to the vehicle body, a bottom surface (21) positioned on the coil spring side, and a mounting hole (23) which passes from the top surface (20) through the bottom surface (21) and is for mounting a sliding bearing (3). On the inner peripheral surface (230) of the mounting hole (23), multiple guide grooves (231, 232) arranged along the circumferential direction are formed along the axis (O).

Description

スプリングシートおよび軸受装置Spring seat and bearing device
　本発明は、ショックアブソーバおよびコイルスプリングを有するサスペンションに加わる車体の荷重を支持する軸受装置に関し、特に、コイルスプリングのバネ座として機能する軸受装置のスプリングシートに関する。 The present invention relates to a bearing device for supporting a load of a vehicle body applied to a suspension having a shock absorber and a coil spring, and more particularly to a spring seat of the bearing device which functions as a spring seat of the coil spring.
　自動車の前輪に用いられるストラット式サスペンション（マクファーソンストラット）は、ショックアブソーバと、ショックアブソーバを取り囲んで配されたコイルスプリングと、を備えており、ステアリング操作によってコイルスプリングがストラット式サスペンションを車体に取り付けるためのアッパーマウントに対して相対的に回動する。このため、この相対的な回動を円滑に許容しつつ、ストラット式サスペンションに加わる荷重を支持するべく、通常、アッパーマウントとコイルスプリングとの間にスラスト軸受装置が配置されている。 A strut type suspension (MacPherson strut) used for a front wheel of an automobile includes a shock absorber and a coil spring disposed around the shock absorber, and the coil spring attaches the strut type suspension to the vehicle body by a steering operation. Relative to the upper mount of the For this reason, a thrust bearing device is usually disposed between the upper mount and the coil spring in order to support the load applied to the strut type suspension while allowing the relative rotation smoothly.
　例えば、特許文献１には、ストラット式サスペンション用のスラスト軸受装置として、転がり軸受、滑り軸受等の軸受と、コイルスプリングのバネ座として機能する合成樹脂製のスプリングシート（カップ）と、を備えたスラスト軸受装置が開示されている。このスラスト軸受装置において、スプリングシートは、軸受の下面との接触部分を含む上面と、コイルスプリングの上端部を支持する環状の支持部を含む下面と、を有する。軸受の下面との接触部分は、放射状、円状、同心状等のリブで構成される。また、スプリングシートは、環状の支持部を形成するとともに、この支持部の内側にゴム製のバンプストッパの上端部を収容するための円筒状の収容部分を形成する環状の折り返し部をさらに有する。この折り返し部には、上面側に溜まった液体を下面側に排出する排出オリフィスが形成されている。さらに、スプリングシートは、軸受のアッパーケース（保護用のカバー）の外周スカート部と係合してラビリンスシールを形成するラグを有する。 For example, Patent Document 1 discloses, as a thrust bearing device for a strut type suspension, bearings such as rolling bearings and sliding bearings, and a synthetic resin spring seat (cup) functioning as a spring seat of a coil spring. A thrust bearing arrangement is disclosed. In this thrust bearing device, the spring seat has an upper surface including a contact portion with the lower surface of the bearing, and a lower surface including an annular support portion supporting the upper end of the coil spring. The contact portion with the lower surface of the bearing is composed of radial, circular, concentric, etc. ribs. Further, the spring seat forms an annular support portion, and further has an annular fold portion forming a cylindrical accommodation portion for accommodating the upper end portion of the rubber bump stopper inside the support portion. A discharge orifice for discharging the liquid accumulated on the upper surface side to the lower surface side is formed in the folded portion. Furthermore, the spring seat has a lug which engages with the outer peripheral skirt of the upper case (cover for protection) of the bearing to form a labyrinth seal.
特表２０１６－５３２０６４号公報Japanese Patent Publication No. 2016-532064 gazette
　しかしながら、特許文献１に記載の軸受装置において、軸受およびスプリングシートは、軸受のアッパーケースの外周スカート部とスプリングシートのラグとにより、軸方向に係合しているのみなので、軸回りを相対的に回動可能である。そして、両者が相対的に回動すると、軸受の下面とスプリングシートの上面の接触部分とが摺動し、合成樹脂製のスプリングシートに摩耗が生じるという問題がある。 However, in the bearing device described in Patent Document 1, since the bearing and the spring seat are only engaged in the axial direction by the outer peripheral skirt portion of the upper case of the bearing and the lug of the spring seat, It is pivotable. And when both rotate relatively, the contact part of the undersurface of a bearing and the upper surface of a spring seat will slide, and there is a problem that abrasion will arise in a spring seat made of synthetic resin.
　本発明は上記事情に鑑みてなされたものであり、その目的は、スプリングシートの摩耗を抑制することができるスプリングシートおよび軸受装置を提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a spring seat and a bearing device capable of suppressing the wear of the spring seat.
　上記課題を解決するために、本発明の合成樹脂製のスプリングシートでは、上面および下面を貫き、軸受を装着するための装着孔を形成し、この装着孔の内周面に、円周方向に並んで配された複数のガイド溝を軸心に沿って形成した。ここで、少なくとも一つのガイド溝の溝深さを、上面側から下面側に向かうに従い浅くしてもよい。 In order to solve the above problems, in the spring seat made of synthetic resin of the present invention, a mounting hole for mounting a bearing is formed through the upper surface and the lower surface, and the inner peripheral surface of the mounting hole is circumferentially A plurality of guide grooves arranged side by side were formed along the axis. Here, the groove depth of at least one guide groove may be made shallower from the upper surface side toward the lower surface side.
　例えば、本発明のスプリングシートは、
　ショックアブソーバおよびコイルスプリングを有するサスペンションの前記コイルスプリングのバネ座として機能する合成樹脂製のスプリングシートであって、
　前記サスペンションを車体に取り付けるためのアッパーマウント側に位置する上面と、
　前記コイルスプリング側に位置する下面と、
　前記下面に形成され、前記コイルスプリングの上端部を支持する支持部と、
　前記上面および前記下面を貫通し、軸受を装着するための装着孔と、を備え、
　前記装着孔の内周面には、
　円周方向に並んで配された複数のガイド溝が、軸心に沿って形成されている。 For example, the spring seat of the present invention is
A synthetic resin spring seat which functions as a spring seat of the coil spring of a suspension having a shock absorber and a coil spring,
An upper surface located on an upper mount side for attaching the suspension to a vehicle body;
A lower surface located on the coil spring side;
A support formed on the lower surface and supporting an upper end of the coil spring;
And a mounting hole penetrating the upper surface and the lower surface for mounting a bearing,
The inner circumferential surface of the mounting hole is
A plurality of guide grooves arranged in the circumferential direction are formed along the axial center.
　また、本発明の軸受装置は、
　ショックアブソーバおよびコイルスプリングを有するサスペンションに加わる荷重を支持する軸受装置であって、
　前記スプリングシートと、
　前記サスペンションを車体に取り付けるためのアッパーマウントと前記スプリングシートとの間に配され、前記スプリングシートの前記アッパーマウントに対する相対的な回動を許容する軸受と、を備えており、
　前記軸受は、
　前記軸受の外周面に、円周方向に並んで形成され、前記スプリングシートの前記装着孔に装着した場合に、当該装着孔の内周面に形成された前記ガイド溝に挿入される複数の回止めを有する。 Moreover, the bearing device of the present invention is
A bearing device for supporting a load applied to a suspension having a shock absorber and a coil spring, comprising:
Said spring seat,
And a bearing disposed between the upper mount for attaching the suspension to the vehicle body and the spring seat, and allowing relative rotation of the spring seat relative to the upper mount.
The bearing is
A plurality of turns are formed along the circumferential direction on the outer peripheral surface of the bearing, and inserted into the guide groove formed on the inner peripheral surface of the mounting hole when mounted in the mounting hole of the spring seat Have a stop.
　本発明では、スプリングシートの軸受が装着される装着孔の内周面に、円周方向に並んで配された複数のガイド溝を軸心に沿って形成している。このため、軸受の外周面に、スプリングシートの装着孔に装着した場合に、ガイド溝に挿入される回止めを設けることにより、軸受がスプリングシートに対して回動するのを防止することができる。したがって、本発明によれば、スプリングシートの摩耗を抑制することができる。また、軸受が合成樹脂製ならば、軸受の摩耗も抑制することができる。 In the present invention, a plurality of guide grooves arranged in the circumferential direction are formed along the axial center on the inner peripheral surface of the mounting hole to which the bearing of the spring seat is mounted. For this reason, when the outer circumferential surface of the bearing is mounted in the mounting hole of the spring seat, the bearing can be prevented from rotating with respect to the spring seat by providing the rotation stop inserted in the guide groove. . Therefore, according to the present invention, wear of the spring seat can be suppressed. In addition, if the bearing is made of synthetic resin, wear of the bearing can be suppressed.
　ここで、少なくとも一つのガイド溝の溝深さを、上面側から下面側に向かうに従い浅くすることにより、このガイド溝に挿入された回止めがこのガイド溝に対してシメシロとなることにより、軸受がスプリングシートに固定され、スプリングシートおよび軸受間のガタつきを防止することができる。したがって、この場合、さらに異音の発生を防止することもできる。 Here, by making the groove depth of at least one guide groove shallower as it goes from the upper surface side to the lower surface side, the rotation stopper inserted in the guide groove becomes a mesh with respect to the guide groove, Is fixed to the spring seat to prevent rattling between the spring seat and the bearing. Therefore, in this case, generation of abnormal noise can be further prevented.
図１（Ａ）、図１（Ｂ）および図１（Ｃ）は、本発明の一実施の形態に係る軸受装置１の平面図、底面図および正面図であり、図１（Ｄ）は、図１（Ａ）に示す軸受装置１のＡ－Ａ断面図である。1 (A), 1 (B) and 1 (C) are a plan view, a bottom view and a front view of a bearing device 1 according to an embodiment of the present invention, and FIG. 1 (D) is FIG. 2 is a cross-sectional view of the bearing device 1 shown in FIG. 図２（Ａ）および図２（Ｂ）は、スプリングシート２の平面図および底面図であり、図２（Ｃ）および（Ｄ）は、図２（Ａ）に示すスプリングシート２のＢ－Ｂ断面図およびＣ－Ｃ断面図である。2 (A) and 2 (B) are a plan view and a bottom view of the spring sheet 2, and FIGS. 2 (C) and 2 (D) are BB of the spring sheet 2 shown in FIG. 2 (A). It is sectional drawing and CC sectional drawing. 図３（Ａ）、図３（Ｂ）および図３（Ｃ）は、滑り軸受３の平面図、底面図および正面図であり、図３（Ｄ）は、図３（Ａ）に示す滑り軸受３のＤ－Ｄ断面拡大図である。3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the sliding bearing 3, and FIG. 3 (D) is a sliding bearing shown in FIG. 3 (A). FIG. 7 is an enlarged view of a cross section D-D of FIG. 図４は、本発明の一実施の形態に係る軸受装置１が適用されたストラット式サスペンション４の概略断面図である。FIG. 4 is a schematic cross-sectional view of a strut type suspension 4 to which a bearing device 1 according to an embodiment of the present invention is applied.
　以下、本発明の一実施の形態について、図面を参照しつつ説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
　図１（Ａ）、図１（Ｂ）および図１（Ｃ）は、本実施の形態に係る軸受装置１の平面図、底面図および正面図であり、図１（Ｄ）は、図１（Ａ）に示す軸受装置１のＡ－Ａ断面図である。 1 (A), FIG. 1 (B) and FIG. 1 (C) are a plan view, a bottom view and a front view of the bearing device 1 according to the present embodiment, and FIG. FIG. 2 is a cross-sectional view of the bearing device 1 shown in FIG.
　本実施の形態に係る軸受装置１は、軸回りの回転を許容しつつ、ストラット式サスペンション４（図４参照）に加わる荷重を支持するための装置であり、図示するように、スプリングシート２と、スプリングシート２上に載置された滑り軸受３と、を備えている。 The bearing device 1 according to the present embodiment is a device for supporting a load applied to the strut type suspension 4 (see FIG. 4) while allowing rotation around the axis, and as shown in FIG. And a sliding bearing 3 mounted on the spring seat 2.
　図２（Ａ）および図２（Ｂ）は、スプリングシート２の平面図および底面図であり、図２（Ｃ）および（Ｄ）は、図２（Ａ）に示すスプリングシート２のＢ－Ｂ断面図およびＣ－Ｃ断面図である。 2 (A) and 2 (B) are a plan view and a bottom view of the spring sheet 2, and FIGS. 2 (C) and 2 (D) are BB of the spring sheet 2 shown in FIG. 2 (A). It is sectional drawing and CC sectional drawing.
　スプリングシート２は、ガラス入りポリアミド樹脂等の強度の高い熱可塑性樹脂で形成され、図示するように、滑り軸受３を載置する環状の載置面２００を含む上面２０と、ストラット式サスペンション４のコイルスプリング４２（図４参照）の上端部を支持する環状の支持面２１０を含む下面２１と、下面２１に形成され、ストラット式サスペンション４のバンプストッパ４３（図４参照）の上端部を収容する筒状の収容部２２と、を備えている。 The spring sheet 2 is formed of a high strength thermoplastic resin such as a polyamide resin containing glass, and as shown in the drawing, the upper surface 20 including the annular mounting surface 200 on which the sliding bearing 3 is mounted, and the strut type suspension 4 The lower surface 21 includes an annular support surface 210 supporting the upper end of the coil spring 42 (see FIG. 4), and the lower surface 21 is formed to receive the upper end of the bump stopper 43 (see FIG. 4) of the strut type suspension 4. And a cylindrical housing portion 22.
　上面２０には、載置面２００の周囲に複数のリブ２０１が放射状に形成されており、これにより、隣接するリブ２０１間に肉盗み２０２が形成されている。なお、図２では、一部のリブ２０１、肉盗み２０２にのみ符号を付している。 On the upper surface 20, a plurality of ribs 201 are radially formed around the mounting surface 200, whereby a meat theft 202 is formed between the adjacent ribs 201. In FIG. 2, only some of the ribs 201 and the meat theft 202 are denoted by reference numerals.
　上面２０の中央には、滑り軸受３の後述するロワーケース３１を装着するための装着孔２３が、下面２１を貫き、収容部２２と軸心Ｏを一致させて形成されている。 At the center of the upper surface 20, a mounting hole 23 for mounting a lower case 31 described later of the slide bearing 3 is formed through the lower surface 21 so that the housing portion 22 and the axial center O coincide with each other.
　装着孔２３の内周面２３０には、軸心Ｏに沿って、溝深さｄ１が一定のガイド溝２３１と、上面２０側から下面２１側に向かうに従い溝深さｄ２が浅くなるテーパ付ガイド溝２３２とが、円周方向に等間隔で交互に複数形成されている。ガイド溝２３１およびテーパ付ガイド溝２３２には、滑り軸受３の後述するロワーケース３１の回止め３１４が挿入される。これにより、ロワーケース３１がスプリングシート２の載置面２００に対して回転するのを防止して、ロワーケース３１およびスプリングシート２が両者間の摺動によって摩耗するのを防止することができる。また、テーパ付ガイド溝２３２に挿入された回止め３１４がテーパ付ガイド溝２３２に対してシメシロとなることにより、ロワーケース３１がスプリングシート２に固定して、スプリングシート２および滑り軸受３間のガタつきによる異音の発生を防止することができる。なお、図２では、一部のガイド溝２３１、テーパ付ガイド溝２３２にのみ符号を付している。 The inner peripheral surface 230 of the mounting hole 23 has a guide groove 231 having a constant groove depth d1 along the axial center O, and a tapered guide whose groove depth d2 decreases as going from the upper surface 20 side to the lower surface 21 side. A plurality of grooves 232 are alternately formed at equal intervals in the circumferential direction. In the guide groove 231 and the tapered guide groove 232, a rotation stop 314 of the lower case 31 of the slide bearing 3 described later is inserted. Thus, the lower case 31 can be prevented from rotating with respect to the mounting surface 200 of the spring seat 2, and the lower case 31 and the spring seat 2 can be prevented from being worn by sliding therebetween. In addition, the lower case 31 is fixed to the spring seat 2 by the rotation stopper 314 inserted in the tapered guide groove 232 becoming a part of the tapered guide groove 232, and the space between the spring seat 2 and the slide bearing 3 is fixed. It is possible to prevent the generation of abnormal noise due to rattling. In FIG. 2, reference numerals are given only to some of the guide grooves 231 and the tapered guide grooves 232.
　肉盗み２０２の底面２０３には、肉盗み２０２に溜まった液体を排水するための排水孔２０４が、収容部２２の端面２２０を貫いて形成されている。この排水孔２０４は、肉盗み２０２の底面２０３側に形成された小径部２０５と、収容部２２の端面２２０側に形成され、小径部２０５より大きな内径の大径部２０６と、を有する。 A drain hole 204 for draining the liquid accumulated in the meat theft 202 is formed in the bottom surface 203 of the meat theft 202 through the end surface 220 of the housing 22. The drainage hole 204 has a small diameter portion 205 formed on the bottom surface 203 side of the meat theft 202 and a large diameter portion 206 formed on the end surface 220 side of the accommodation portion 22 and having an inner diameter larger than the small diameter portion 205.
　小径部２０５は、収容部２２の端面２２０側に近づくにつれて内径が小さくなるようテーパが付けられており、大径部２０６は、肉盗み２０２の底面２０３側に近づくにつれて内径が小さくなるようにテーパが付けられている。そして、両者は、互いの軸心（小径部２０５の軸心Ｃ１、大径部２０６の軸心Ｃ２）がずれた状態で、互いに連結されている。 The small diameter portion 205 is tapered so that the inner diameter decreases as it approaches the end surface 220 side of the housing portion 22, and the large diameter portion 206 tapers so that the inner diameter decreases as it approaches the bottom surface 203 side of the meat steal 202 Is attached. And both are mutually connected in the state which mutual axial center (The axial center C1 of the small diameter part 205, and the axial center C2 of the large diameter part 206) shifted | deviated.
　排水孔２０４において、肉盗み２０２の底面２０３側に位置する小径部２０５の内径を収容部２２の端面２２０側に位置する大径部２０６の内径より小さくし、かつ小径部２０５の軸心Ｃ１と大径部２０６の軸心Ｃ２とをずらしているので、肉盗み２０２に溜まった液体の排水性に影響するほど、小径部２０５の内径を小さくしなくても、下側（収容部２２の端面２２０側）から大径部２０６に侵入する水の勢いを弱めて、下側から肉盗み２０２への液体の侵入を防止することができる。 In the drainage hole 204, the inner diameter of the small diameter portion 205 located on the bottom surface 203 side of the meat theft 202 is made smaller than the inner diameter of the large diameter portion 206 located on the end surface 220 side of the accommodation portion 22, Since the axis C2 of the large diameter portion 206 is offset from the lower side (the end face of the housing portion 22 without reducing the inner diameter of the small diameter portion 205 so as to affect the drainage property of the liquid accumulated in the meat theft 202). The force of water entering the large diameter portion 206 from the side 220) can be reduced to prevent the liquid from entering the meat theft 202 from the lower side.
　収容部２２の内周面２２１には、内方に突出する突起部２２２が周方向に等間隔で複数形成されている。突起部２２２は、収容部２２に収容されたバンプストッパ４３を径方向内方に押圧して固定する。また、個々の突起部２２２に対応して、上面２０には、下面２１まで貫通し、軸心Ｏに垂直な仮想平面において突起部２２２を枠内に収める窓孔２０７が形成されている。個々の突起部２２２に対応して窓孔２０７を設けたことにより、軸心Ｏ方向に相対移動する２つの金型（上型および下型）を用いて、スライド型なしで突起部２２２を形成することができる。 A plurality of inward protruding protrusions 222 are formed on the inner circumferential surface 221 of the housing 22 at equal intervals in the circumferential direction. The protrusion 222 presses the bump stopper 43 accommodated in the accommodation portion 22 radially inward and fixes it. In addition, window holes 207 are formed in the upper surface 20 corresponding to the individual projections 222 to receive the projections 222 in a frame on an imaginary plane perpendicular to the axial center O. By providing the window hole 207 corresponding to each projection 222, the projection 222 is formed without a slide mold using two molds (upper mold and lower mold) which move relative to each other in the axial center O direction. can do.
　図３（Ａ）、図３（Ｂ）および図３（Ｃ）は、滑り軸受３の平面図、底面図および正面図であり、図３（Ｄ）は、図３（Ａ）に示す滑り軸受３のＤ－Ｄ断面拡大図である。 3 (A), 3 (B) and 3 (C) are a plan view, a bottom view and a front view of the sliding bearing 3, and FIG. 3 (D) is a sliding bearing shown in FIG. 3 (A). FIG. 7 is an enlarged view of a cross section D-D of FIG.
　図示するように、滑り軸受３は、環状のアッパーケース３０と、ストラット式サスペンション４を構成するショックアブソーバ４１のピストンロッド４０が挿入されるとともに、アッパーケース３０と回動自在に組み合わされる筒状のロワーケース３１と、アッパーケース３０とロワーケース３１との間に配置された環状のセンタープレート３２および金属ワッシャ３３と、を備えている。 As illustrated, the slide bearing 3 has a tubular shape in which the annular upper case 30 and the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 are inserted, and is rotatably combined with the upper case 30. A lower case 31 and an annular center plate 32 and a metal washer 33 disposed between the upper case 30 and the lower case 31 are provided.
　アッパーケース３０は、ガラス入りポリアミド樹脂等の強度の高い熱可塑性樹脂で形成され、その上面３００には、ストラット式サスペンション４を車体に取り付けるためのアッパーマウント５（図４参照）への取付面３０１が形成されている。また、アッパーケース３０の下面３０２には、金属ワッシャ３３を装着するための装着孔３０３が上面３００を貫いて形成されており、下面３０２の装着孔３０３の周囲には、金属ワッシャ３３の上面３３０と接触する環状下面３０４が形成されている。 The upper case 30 is formed of a high strength thermoplastic resin such as a polyamide resin containing glass, and the upper surface 300 thereof is a mounting surface 301 to the upper mount 5 (see FIG. 4) for mounting the strut type suspension 4 to the vehicle body. Is formed. A mounting hole 303 for mounting the metal washer 33 is formed in the lower surface 302 of the upper case 30 so as to penetrate the upper surface 300, and the upper surface 330 of the metal washer 33 is formed around the mounting hole 303 of the lower surface 302. An annular lower surface 304 is formed in contact therewith.
　ロワーケース３１は、ストラット式サスペンション４を構成するショックアブソーバ４１のピストンロッド４０が挿入される。ロワーケース３１は、必要に応じて潤滑油が含浸されたポリアセタール樹脂等の摺動特性に優れた熱可塑性樹脂で形成され、その上端面３１０には、センタープレート３２が載置される環状上面３１１が形成されている。 In the lower case 31, the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 is inserted. Lower case 31 is formed of a thermoplastic resin having excellent sliding characteristics, such as polyacetal resin impregnated with lubricating oil if necessary, and annular upper surface 311 on which center plate 32 is mounted on the upper end surface 310. Is formed.
　ロワーケース３１の外周面３１２には、滑り軸受３をスプリングシート２上に装着した場合に、スプリングシート２の上面２０の載置面２００と接触するフランジ部３１３が形成されている。また、外周面３１２には、滑り軸受３をスプリングシート２上に装着した場合に、スプリングシート２の装着孔２３の内周面２３０に形成されたガイド溝２３１あるいはテーパ付ガイド溝２３２に挿入される回止め３１４が、円周方向に等間隔で複数形成されている。 On the outer peripheral surface 312 of the lower case 31, a flange portion 313 is formed which comes into contact with the mounting surface 200 of the upper surface 20 of the spring seat 2 when the slide bearing 3 is mounted on the spring seat 2. In addition, when the slide bearing 3 is mounted on the spring seat 2 on the outer peripheral surface 312, it is inserted into the guide groove 231 or the tapered guide groove 232 formed on the inner peripheral surface 230 of the mounting hole 23 of the spring seat 2. A plurality of detents 314 are formed at equal intervals in the circumferential direction.
　センタープレート３２は、ポリエチレン、熱可塑性ポリエステルエラストマ等の摺動特性に優れた樹脂で形成され、アッパーケース３０の環状下面３０４とロワーケース３１の環状上面３１１との間に配置される。これにより、アッパーケース３０およびロワーケース３１は、センタープレート３２を介して相対的に回動する。 The center plate 32 is formed of a resin having excellent sliding characteristics, such as polyethylene and thermoplastic polyester elastomer, and is disposed between the annular lower surface 304 of the upper case 30 and the annular upper surface 311 of the lower case 31. Thereby, the upper case 30 and the lower case 31 relatively rotate via the center plate 32.
　金属ワッシャ３３は、アッパーケース３０の環状下面３０４とセンタープレート３２の上面３２０との間に配置され、ストラット式サスペンション４を構成するショックアブソーバ４１のピストンロッド４０が挿入される。金属ワッシャ３３は、鋼、ステンレス等の鋼板、あるいは銅合金、チタン合金等の非鉄合金板で形成され、その上面３３０には、アッパーケース３０の装着孔３０３に装着される筒状のボス部３３１が形成されている。 The metal washer 33 is disposed between the annular lower surface 304 of the upper case 30 and the upper surface 320 of the center plate 32, and the piston rod 40 of the shock absorber 41 constituting the strut type suspension 4 is inserted. The metal washer 33 is formed of a steel plate such as steel or stainless steel, or a non-ferrous alloy plate such as a copper alloy or a titanium alloy, and the cylindrical boss portion 331 attached to the mounting hole 303 of the upper case 30 is formed on the upper surface 330 thereof. Is formed.
　つぎに、本実施の形態に係る軸受装置１の適用例について説明する。 Below, the application example of the bearing apparatus 1 which concerns on this Embodiment is demonstrated.
　図４は、本実施の形態に係る軸受装置１が適用されたストラット式サスペンション４の概略断面図である。 FIG. 4 is a schematic cross-sectional view of a strut type suspension 4 to which the bearing device 1 according to the present embodiment is applied.
　図示するように、本実施の形態に係る軸受装置１は、例えば、ショックアブソーバ４１と、ショックアブソーバ４１を取り囲んで配されたコイルスプリング４２と、を備えた自動車のストラット式サスペンション４に取り付けられる。この軸受装置１が取り付けられたストラット式サスペンション４は、アッパーマウント５を介して車体（不図示）に取り付けられる。 As illustrated, the bearing device 1 according to the present embodiment is attached to, for example, a strut type suspension 4 of an automobile including a shock absorber 41 and a coil spring 42 disposed around the shock absorber 41. The strut type suspension 4 to which the bearing device 1 is attached is attached to the vehicle body (not shown) via the upper mount 5.
　ショックアブソーバ４１は、ピストンロッド４０と、ピストンロッド４０を取り囲むように配されたバンプストッパ４３と、を備えている。 The shock absorber 41 includes a piston rod 40 and a bump stopper 43 arranged to surround the piston rod 40.
　アッパーマウント５は、芯金５１が埋設されたゴム等の弾性部材５０で構成され、滑り軸受３のアッパーケース３０の取付面３０１と接触するようにして、滑り軸受３を収容している。 The upper mount 5 is made of an elastic member 50 such as rubber in which a core metal 51 is embedded, and accommodates the slide bearing 3 in contact with the mounting surface 301 of the upper case 30 of the slide bearing 3.
　スプリングシート２および滑り軸受３からなる軸受装置１は、アッパーマウント５とコイルスプリング４２との間に配置され、ピストンロッド４０が滑り軸受３に挿入された状態で、スプリングシート２の支持面２１０がコイルスプリング４２の上端部を支持しつつ、スプリングシート２の収容部２２がバンプストッパ４３の上端部を収容する。 The bearing device 1 including the spring seat 2 and the slide bearing 3 is disposed between the upper mount 5 and the coil spring 42, and in a state where the piston rod 40 is inserted into the slide bearing 3, the support surface 210 of the spring seat 2 While supporting the upper end portion of the coil spring 42, the accommodation portion 22 of the spring seat 2 accommodates the upper end portion of the bump stopper 43.
　ピストンロッド４０は、滑り軸受３のロワーケース３１に挿入される大径部４００と、大径部４００に一体的に形成され、金属ワッシャ３３に挿入される、大径部４００より小径の小径部４０１と、小径部４０１に形成されたねじ部４０２と、を備えている。 The piston rod 40 is integrally formed with the large diameter portion 400 inserted into the lower case 31 of the slide bearing 3 and the large diameter portion 400, and is inserted into the metal washer 33. The small diameter portion smaller than the large diameter portion 400 And a threaded portion 402 formed in the small diameter portion 401.
　ピストンロッド４０の大径部４００は、ロワーケース３１の内周面３１５と、円周方向Ｒに回動自在に接触している。 The large diameter portion 400 of the piston rod 40 rotatably contacts the inner circumferential surface 315 of the lower case 31 in the circumferential direction R.
　ピストンロッド４０の小径部４０１のねじ部４０２には、ナット６が螺合されている。ナット６は、ねじ部４０２に螺合してピストンロッド４０に固定され、アッパーマウント５に対して円周方向Ｒに回転しないように、アッパーマウント５に収容されている。 A nut 6 is screwed into the threaded portion 402 of the small diameter portion 401 of the piston rod 40. The nut 6 is screwed into the screw portion 402 and fixed to the piston rod 40, and is accommodated in the upper mount 5 so as not to rotate in the circumferential direction R with respect to the upper mount 5.
　滑り軸受３の金属ワッシャ３３は、ピストンロッド４０の大径部４００と小径部４０１との間に形成される段差面４０３と、ねじ部４０２に螺合されたナット６との間に挟持されている。 The metal washer 33 of the slide bearing 3 is held between the step surface 403 formed between the large diameter portion 400 and the small diameter portion 401 of the piston rod 40 and the nut 6 screwed to the screw portion 402. There is.
　滑り軸受３において、アッパーケース３０は、ストラット式サスペンション４が滑り軸受３を介してアッパーマウント５に取り付けられることにより、ピストンロッド４０の段差面４０３に固定された金属ワッシャ３３によってアッパーマウント５に押し当てられる。これにより、アッパーケース３０および金属ワッシャ３３間の相対的な回転が阻止され、アッパーケース３０は、ピストンロッド４０に対して円周方向Ｒに回動しないようにアッパーマウント５に保持される。一方、ロワーケース３１は、ロワーケース３１およびスプリングシート２間の相対的な回転が阻止された状態でスプリングシート２に装着されており、スプリングシート２に従って円周方向Ｒに回動する。 In the slide bearing 3, the upper case 30 is pushed to the upper mount 5 by the metal washer 33 fixed to the stepped surface 403 of the piston rod 40 by the strut type suspension 4 being attached to the upper mount 5 via the slide bearing 3. It is applied. Thus, relative rotation between the upper case 30 and the metal washer 33 is prevented, and the upper case 30 is held by the upper mount 5 so as not to rotate in the circumferential direction R with respect to the piston rod 40. On the other hand, lower case 31 is mounted on spring seat 2 in a state where relative rotation between lower case 31 and spring seat 2 is blocked, and rotates in the circumferential direction R along spring seat 2.
　上記構成のストラット式サスペンション４において、ステアリング操作によりコイルスプリング４２が軸心Ｏ回りで円周方向Ｒに回転すると、コイルスプリング４２を支持するスプリングシート２および滑り軸受３のロワーケース３１も、コイルスプリング４２とともに円周方向Ｒに回転する。一方、滑り軸受３の金属ワッシャ３３およびアッパーケース３０は、ピストンロッド４０に対して円周方向Ｒに回動しないようにアッパーマウント５に保持されており、この結果、滑り軸受３において、金属ワッシャ３３およびアッパーケース３０とロワーケース３１との間に、円周方向Ｒの相対的な回転が発生する。この相対的な回転は、ロワーケース３１の環状上面３１１と金属ワッシャ３３との間に配置されたセンタープレート３２によりスムーズに行われ、これにより、ステアリング操作も抵抗なく行われる。 In the strut type suspension 4 of the above configuration, when the coil spring 42 is rotated in the circumferential direction R around the axis O by steering operation, the spring seat 2 supporting the coil spring 42 and the lower case 31 of the slide bearing 3 are also coil springs. 42 rotates in the circumferential direction R together with 42. On the other hand, the metal washer 33 and the upper case 30 of the slide bearing 3 are held by the upper mount 5 so as not to rotate in the circumferential direction R with respect to the piston rod 40. As a result, in the slide bearing 3, the metal washer A relative rotation in the circumferential direction R occurs between the lower case 33 and the upper case 30 and the lower case 31. The relative rotation is smoothly performed by the center plate 32 disposed between the annular upper surface 311 of the lower case 31 and the metal washer 33, whereby the steering operation is also performed without resistance.
　このように、軸受装置１は、滑り軸受３により、コイルスプリング４２のアッパーマウント５に対する円周方向Ｒの回動を許容しつつ、スプリングシート２により、コイルスプリング４２を介してストラット式サスペンション４に加わる車体の荷重を支持する。 Thus, the bearing device 1 allows the spring seat 2 to move the strut type suspension 4 through the coil spring 42 while allowing the sliding bearing 3 to turn the coil spring 42 in the circumferential direction R with respect to the upper mount 5. Support the applied vehicle load.
　以上、本発明の一実施の形態について説明した。 Heretofore, an embodiment of the present invention has been described.
　本実施の形態では、スプリングシート２の装着孔２３の内周面２３０に、軸心Ｏに沿って、溝深さｄ１が一定のガイド溝２３１と、上面２０側から下面２１側に向かうに従い溝深さｄ２が浅くなるテーパ付ガイド溝２３２とを、円周方向に等間隔で交互に複数設け、これらのガイド溝２３１およびテーパ付ガイド溝２３２に、滑り軸受３のロワーケース３１の回止め３１４を挿入している。これにより、本実施の形態によれば、ロワーケース３１がスプリングシート２の載置面２００に対して回転するのを防止して、ロワーケース３１およびスプリングシート２が両者間の摺動によって摩耗するのを防止することができる。また、テーパ付ガイド溝２３２に挿入された回止め３１４がテーパ付ガイド溝２３２に対してシメシロとなることにより、ロワーケース３１をスプリングシート２に固定して、スプリングシート２および滑り軸受３間のガタつきによる異音の発生を防止することができる。 In the present embodiment, along the axial center O, the inner circumferential surface 230 of the mounting hole 23 of the spring seat 2 is a guide groove 231 having a constant groove depth d1 and a groove from the upper surface 20 side toward the lower surface 21 side. A plurality of tapered guide grooves 232 having a shallow depth d2 are provided alternately at equal intervals in the circumferential direction, and the lower case 31 of the sliding bearing 3 is stopped 314 in these guide grooves 231 and the tapered guide grooves 232. Is inserted. Thereby, according to the present embodiment, lower case 31 is prevented from rotating with respect to mounting surface 200 of spring seat 2, and lower case 31 and spring seat 2 wear due to the sliding therebetween. Can be prevented. In addition, the lower case 31 is fixed to the spring seat 2 by the rotation stopper 314 inserted in the tapered guide groove 232 becoming a part of the tapered guide groove 232, and the space between the spring seat 2 and the slide bearing 3 is fixed. It is possible to prevent the generation of abnormal noise due to rattling.
　また、本実施の形態では、スプリングシート２の載置面２００の周囲に複数のリブ２０１を放射状に形成して、隣接するリブ２０１間に肉盗み２０２を設けている。これにより、スプリングシート２の強度を維持しつつ、軽量化を図ることができる。 Further, in the present embodiment, the plurality of ribs 201 are radially formed around the mounting surface 200 of the spring sheet 2, and the meat theft 202 is provided between the adjacent ribs 201. Thereby, weight saving can be achieved while maintaining the strength of the spring seat 2.
　また、本実施の形態では、スプリングシート２の収容部２２の内周面２２１に設けられた突起部２２２により、収容部２２に収容されたバンプストッパ４３を固定するので、スプリングシート２の収容部２２の内径を全周に亘りバンプストッパ４３の外径に対してシメシロに設定する必要がない。このため、収容部２２の内径を全周に亘りシメシロに設定した場合に比べて、バンプストッパ４３の上端部をスプリングシート２の収容部２２に挿入する際に要求される圧力を下げて抵抗を小さくすることができる。したがって、本実施の形態によれば、バンプストッパ４３への装着作業の作業性を向上させることができる。 Further, in the present embodiment, the bump stopper 43 housed in the housing portion 22 is fixed by the projection 222 provided on the inner peripheral surface 221 of the housing portion 22 of the spring seat 2, so the housing portion of the spring seat 2 is It is not necessary to set the inner diameter of 22 to the outer diameter of the bump stopper 43 over the entire circumference. Therefore, the pressure required for inserting the upper end of the bump stopper 43 into the housing portion 22 of the spring seat 2 is lowered to reduce resistance as compared with the case where the inner diameter of the housing portion 22 is set to the entire circumference. It can be made smaller. Therefore, according to the present embodiment, the workability of the mounting operation to the bump stopper 43 can be improved.
　また、本実施の形態では、スプリングシート２の上面に、個々の突起部２２２に対応して、下面２１まで貫通し、軸心Ｏに垂直な仮想平面において突起部２２２を枠内に収める窓孔２０７を設けている。このため、軸心Ｏ方向に相対移動する２つの金型（上型および下型）を用いて、スライド型なしで突起部２２２を形成することができる。したがって、本実施の形態によれば、コストを増加させることなく、バンプストッパ４３への装着作業の作業性を向上させることができる。 Further, in the present embodiment, a window hole is formed on the upper surface of the spring seat 2 so as to penetrate to the lower surface 21 corresponding to each protrusion 222 and store the protrusion 222 in a frame in a virtual plane perpendicular to the axis O 207 is provided. Therefore, the protrusion 222 can be formed without using a slide mold, using two molds (upper mold and lower mold) that move relative to each other in the axial center O direction. Therefore, according to the present embodiment, the workability of the mounting operation on the bump stopper 43 can be improved without increasing the cost.
　また、本実施の形態では、スプリングシート２の肉盗み２０２の底面２０３に、肉盗み２０２に溜まった液体を排水するための排水孔２０４を設けており、この排水孔２０４において、肉盗み２０２の底面２０３側に位置する小径部２０５の軸心Ｃ１と収容部２２の端面２２０側に位置する大径部２０６の軸心Ｃ２とをずらしている。このため、肉盗み２０２に溜まった液体の排水性に影響するほど、小径部２０５の内径を小さくしなくても、下側（収容部２２の端面２２０側）から大径部２０６に侵入する水の勢いを弱めて、下側から肉盗み２０２への液体の侵入を防止することができる。したがって、本実施の形態によれば、肉盗み２０２に溜まった液体の排出性を維持しつつ、下側からの液体の侵入を防止することができる。 Further, in the present embodiment, the bottom surface 203 of the meat theft 202 of the spring seat 2 is provided with a drainage hole 204 for draining the liquid accumulated in the meat theft 202. The axial center C1 of the small diameter portion 205 located on the bottom surface 203 side and the axial center C2 of the large diameter portion 206 located on the end surface 220 side of the accommodation portion 22 are shifted. For this reason, the water entering the large diameter portion 206 from the lower side (the end surface 220 side of the housing portion 22) without reducing the inner diameter of the small diameter portion 205 so as to affect the drainage property of the liquid accumulated in the meat theft 202 To prevent the infiltration of liquid from below into meat theft 202. Therefore, according to the present embodiment, it is possible to prevent the entry of the liquid from the lower side while maintaining the drainability of the liquid accumulated in the meat theft 202.
　加えて、排水孔２０４では、小径部２０５に、収容部２２の端面２２０側に近づくにつれて内径が小さくなるようテーパを付けるとともに、大径部２０６に、肉盗み２０２の底面２０３側に近づくにつれて内径が小さくなるようにテーパを付けている。このため、肉盗み２０２に溜まった液体の排出性を維持しつつ、下側からの液体の侵入をさらにより効果的に防止することができる。 In addition, in the drainage hole 204, the small diameter portion 205 is tapered so that the inner diameter decreases as it approaches the end surface 220 side of the accommodation portion 22, and the large diameter portion 206 is inner diameter as the bottom surface 203 of the meat steal 202 approaches. Is tapered so that For this reason, while maintaining the drainability of the liquid accumulated in the meat theft 202, it is possible to more effectively prevent the liquid from invading from the lower side.
　また、本実施の形態のスプリングシート２では、特許文献１に記載のスプリングシートと異なり、環状の折り返し部を設けていないので、スプリングシート２の強度低下を防止することができる。 Further, in the spring seat 2 of the present embodiment, unlike the spring seat described in Patent Document 1, since the annular folded portion is not provided, the strength reduction of the spring seat 2 can be prevented.
　なお、本発明は、上記の実施の形態に限定されるものではなく、その要旨の範囲内で数々の変形が可能である。 The present invention is not limited to the above embodiment, and various modifications are possible within the scope of the invention.
　例えば、上記の実施の形態では、スプリングシート２の装着孔２３の内周面２３０に、ガイド溝２３１およびテーパ付ガイド溝２３２を、円周方向に等間隔で交互に複数形成し、これに合わせて、滑り軸受３のロワーケース３１の外周面３１２に、回止め３１４を円周方向に等間隔で複数形成しているが、本発明はこれに限定されない。ガイド溝２３１およびテーパ付ガイド溝２３２は、スプリングシート２の装着孔２３の内周面２３０に、円周方向に並んで形成されていればよく、これに合わせて、回止め３１４も、滑り軸受３のロワーケース３１の外周面３１２に、円周方向に並んで複数形成されていればよい。また、テーパ付ガイド溝２３２は省略されていてもよい。この場合でも、ロワーケース３１がスプリングシート２の載置面２００に対して回転するのを防止して、ロワーケース３１およびスプリングシート２が両者間の摺動によって摩耗するのを防止することができる。 For example, in the above embodiment, a plurality of guide grooves 231 and tapered guide grooves 232 are alternately formed at equal intervals in the circumferential direction on the inner circumferential surface 230 of the mounting hole 23 of the spring seat 2. A plurality of detents 314 are formed on the outer peripheral surface 312 of the lower case 31 of the slide bearing 3 at equal intervals in the circumferential direction, but the present invention is not limited to this. The guide groove 231 and the tapered guide groove 232 may be formed along the circumferential direction on the inner peripheral surface 230 of the mounting hole 23 of the spring seat 2, and according to this, the rotation stopper 314 also is a slide bearing It is only necessary to form a plurality on the outer peripheral surface 312 of the lower case 31 of No. 3 along the circumferential direction. Also, the tapered guide groove 232 may be omitted. Even in this case, the lower case 31 can be prevented from rotating with respect to the mounting surface 200 of the spring seat 2, and the lower case 31 and the spring seat 2 can be prevented from being worn by sliding therebetween. .
　また、上記の実施の形態では、排水孔２０４において、肉盗み２０２の底面２０３側に位置する上部（小径部２０５）の内径を収容部２２の端面２２０側に位置する下部（大径部２０６）の内径より小さくしているが、本発明はこれに限定されない。両者の内径は同じであってもよいし、あるいは、上部の内径が下部の内径より大きくてもよい。また、排水孔２０４は、円孔である必要はなく、角孔等のその他の形状であってもよい。 In the above embodiment, in the drainage hole 204, the inner diameter of the upper portion (small diameter portion 205) located on the bottom surface 203 side of the meat theft 202 is located on the end surface 220 side of the accommodation portion 22 (large diameter portion 206). However, the present invention is not limited thereto. The inner diameters of both may be the same, or the upper inner diameter may be larger than the lower inner diameter. Moreover, the drainage hole 204 does not have to be a circular hole, and may have another shape such as a square hole.
　また、上記の実施の形態では、スプリングシート２の支持面２１０に直接、コイルスプリング４２の上端部を接触させているが、スプリングシート２の下面２１あるいはスプリングシート２の下面２１および収容部２２の外周面を覆うゴム、エラストマ等からなる緩衝材を設け、この緩衝材を介してスプリングシート２の支持面２１０にコイルスプリング４２の上端部を接触させてもよい。この場合、緩衝材は、スプリングシート２と一体化されていても、別個でもよい。 In the above embodiment, although the upper end portion of the coil spring 42 is in direct contact with the support surface 210 of the spring seat 2, the lower surface 21 of the spring seat 2 or the lower surface 21 of the spring seat 2 and the accommodation portion 22 A shock absorbing material made of rubber, elastomer or the like covering the outer peripheral surface may be provided, and the upper end portion of the coil spring 42 may be brought into contact with the support surface 210 of the spring seat 2 via this shock absorbing material. In this case, the shock absorbing material may be integrated with the spring seat 2 or may be separate.
　また、上記の実施の形態では、スプリングシート２に組み合わせる軸受として、滑り軸受３を用いた場合を例にとり説明したが、本発明はこれに限定されない。軸受は、コイルスプリング４２のアッパーマウント５に対する円周方向Ｒの回動を許容することができればよく、例えば転がり軸受でもよい。この場合、センタープレート３２に代えて複数のボール、ローラ等の転がり部材が軸部材として機能する。 Moreover, although the case where the slide bearing 3 was used was mentioned as an example and demonstrated in said embodiment as a bearing combined with the spring seat 2, this invention is not limited to this. The bearing should just be able to allow rotation of the coil spring 42 in the circumferential direction R with respect to the upper mount 5, and may be, for example, a rolling bearing. In this case, in place of the center plate 32, rolling members such as a plurality of balls and rollers function as shaft members.
　また、本発明は、ストラット式サスペンションに限らず、ショックアブソーバおよびコイルスプリングを有するサスペンションに加わる荷重を支持する軸受装置に広く適用可能である。 Further, the present invention is not limited to a strut type suspension, and can be widely applied to a bearing device for supporting a load applied to a suspension having a shock absorber and a coil spring.
　１：軸受装置、　２：スプリングシート、　３：滑り軸受、　４：ストラット式サスペンション、　５：アッパーマウント、　６：ナット、　２０：スプリングシート２の上面、　２１：スプリングシート２の下面、　２２：スプリングシート２の収容部、　２３：スプリングシート２の装着孔、　３０：アッパーケース、　３１：ロワーケース、　３２：センタープレート、　３３：金属ワッシャ、　４０：ピストンロッド、　４１：ショックアブソーバ、　４２：コイルスプリング、　４３：バンプストッパ、　５０：弾性部材、　５１：芯金、　２００：載置面、　２０１：リブ、　２０２：肉盗み、　２０３：肉盗み２０２の底面、　２０４：排水孔、　２０５：排水孔２０４の小径部、　２０６：排水孔２０４の大径部、　２０７：窓孔、　２１０：スプリングシート２の支持面、　２２０：収容部２２の端面、　２２１：収容部２２の内周面、　２２２：スプリングシート２の突起部、　２３０：装着孔２３の内周面、　２３１：スプリングシート２のガイド溝、　２３２：スプリングシート２のテーパ付ガイド溝、　３００：アッパーケース３０の上面、　３０１：アッパーケース３０の取付面、　３０２：アッパーケース３０の下面、　３０３：アッパーケース３０の装着孔、　３０４：アッパーケース３０の環状下面、　３１０：ロワーケース３１の上端面、　３１１：ロワーケース３１の環状上面、　３１２：ロワーケース３１の外周面、　３１３：ロワーケース３１のフランジ部、　３１４：ロワーケース３１の回止め、　３１５：ロワーケース３１の内周面、　３２０：センタープレート３２の上面、　３３０：金属ワッシャ３３の上面、　３３１：金属ワッシャ３３のボス部、　４００：ピストンロッド４０の大径部、　４０１：ピストンロッド４０の小径部、　４０２：ピストンロッド４０のねじ部、　４０３：ピストンロッド４０の段差面
  1: bearing device, 2: spring seat, 3: sliding bearing, 4: strut type suspension, 5: upper mount, 6: nut, 20: upper surface of spring seat 2, 21: lower surface of spring seat 2, 22: spring seat 2 storage part, 23: mounting hole of spring seat 2, 30: upper case, 31: lower case, 32: center plate, 33: metal washer, 40: piston rod, 41: shock absorber, 42: coil spring, 43 A: Bump stopper, 50: Elastic member, 51: Core metal, 200: Mounting surface, 201: Rib, 202: Meat theft, 203: Bottom of meat theft 202, 204: Drain hole, 205: Small diameter portion of the drain hole 204 , 206: large diameter part of the drainage hole 204, 207: window hole, 210: of the spring seat 2 Support surface 220: end face of housing 22 221: inner circumferential surface of housing 22 222: projection of spring seat 2 230: inner circumferential surface of mounting hole 23 231: guide groove of spring seat 2 232 A guide groove with spring seat 2 tapers 300: Upper surface of upper case 30, 301: Mounting surface of upper case 30, 302: Lower surface of upper case 30, 303: Mounting hole of upper case 30, 304: Upper case 30 Annular lower surface, 310: upper end surface of lower case 31, 311: annular upper surface of lower case 31, 312: outer peripheral surface of lower case 31, 313: flange portion of lower case 31, 314: rotation stop of lower case 31, 315: Inner circumferential surface of lower case 31, 320: upper surface of center plate 32, 330: metal washer Upper surface of 33, 331: Boss of metal washer 33, 400: Large diameter of piston rod 40, 401: Small diameter of piston rod 40, 402: Thread of piston rod 40, 403: Stepped surface of piston rod 40

Claims (4)

  1. 　ショックアブソーバおよびコイルスプリングを有するサスペンションの前記コイルスプリングのバネ座として機能する合成樹脂製のスプリングシートであって、
    　前記サスペンションを車体に取り付けるためのアッパーマウント側に位置する上面と、
    　前記コイルスプリング側に位置する下面と、
    　前記下面に形成され、前記コイルスプリングの上端部を支持する支持部と、
    　前記上面および前記下面を貫通し、軸受を装着するための装着孔と、を備え、
    　前記装着孔の内周面には、
    　円周方向に並んで配された複数のガイド溝が、軸心に沿って形成されている
    　ことを特徴とするスプリングシート。     A synthetic resin spring seat which functions as a spring seat of the coil spring of a suspension having a shock absorber and a coil spring,
    An upper surface located on an upper mount side for attaching the suspension to a vehicle body;
    A lower surface located on the coil spring side;
    A support formed on the lower surface and supporting an upper end of the coil spring;
    And a mounting hole penetrating the upper surface and the lower surface for mounting a bearing,
    The inner circumferential surface of the mounting hole is
    A plurality of guide grooves arranged in the circumferential direction are formed along an axial center.
  2. 　請求項１に記載のスプリングシートであって、
    　前記複数のガイド溝の少なくとも一つは、上面側から下面側に向かうに従い溝深さが浅くなる
    　ことを特徴とするスプリングシート。     A spring seat according to claim 1, wherein
    At least one of the plurality of guide grooves has a groove depth that becomes shallower as it goes from the upper surface side to the lower surface side.
  3. 　請求項１または２に記載のスプリングシートであって、
    　前記上面に放射状に形成された複数のリブをさらに有する
    　ことを特徴とするスプリングシート。     A spring seat according to claim 1 or 2, wherein
    A spring seat characterized by further having a plurality of ribs formed radially on the upper surface.
  4. 　ショックアブソーバおよびコイルスプリングを有するサスペンションに加わる荷重を支持する軸受装置であって、
    　請求項１ないし３のいずれか一項に記載のスプリングシートと、
    　前記サスペンションを車体に取り付けるためのアッパーマウントと前記スプリングシートとの間に配され、前記スプリングシートの前記アッパーマウントに対する相対的な回動を許容する軸受と、を備えており、
    　前記軸受は、
    　前記軸受の外周面に、円周方向に並んで形成され、前記スプリングシートの前記装着孔に装着した場合に、当該装着孔の内周面に形成された前記ガイド溝に挿入される複数の回止めを有する
    　ことを特徴とする軸受装置。     A bearing device for supporting a load applied to a suspension having a shock absorber and a coil spring, comprising:
    A spring seat according to any one of claims 1 to 3;
    And a bearing disposed between the upper mount for attaching the suspension to the vehicle body and the spring seat, and allowing relative rotation of the spring seat relative to the upper mount.
    The bearing is
    A plurality of turns are formed along the circumferential direction on the outer peripheral surface of the bearing, and inserted into the guide groove formed on the inner peripheral surface of the mounting hole when mounted in the mounting hole of the spring seat Bearing device characterized by having a stop.
PCT/JP2018/025796 2017-07-12 2018-07-06 Spring seat and bearing device WO2019013142A1 (en)

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Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS59146628U (en) * 1983-03-19 1984-10-01 トヨタ自動車株式会社 coil spring insulator
JPH11129721A (en) * 1997-10-31 1999-05-18 Chuo Spring Co Ltd Vehicular suspension device
JP2005248972A (en) * 2004-03-01 2005-09-15 Kayaba Ind Co Ltd Suspension device
JP2007253926A (en) * 2006-02-21 2007-10-04 Tokai Rubber Ind Ltd Spring seat of vehicular suspension
JP2008232304A (en) * 2007-03-20 2008-10-02 Oiles Ind Co Ltd Thrust sliding bearing, and thrust sliding bearing-piston rod and coil spring combination mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146628U (en) * 1983-03-19 1984-10-01 トヨタ自動車株式会社 coil spring insulator
JPH11129721A (en) * 1997-10-31 1999-05-18 Chuo Spring Co Ltd Vehicular suspension device
JP2005248972A (en) * 2004-03-01 2005-09-15 Kayaba Ind Co Ltd Suspension device
JP2007253926A (en) * 2006-02-21 2007-10-04 Tokai Rubber Ind Ltd Spring seat of vehicular suspension
JP2008232304A (en) * 2007-03-20 2008-10-02 Oiles Ind Co Ltd Thrust sliding bearing, and thrust sliding bearing-piston rod and coil spring combination mechanism

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