WO2020158462A1 - Vehicular suspension device, and suspension device spring - Google Patents

Vehicular suspension device, and suspension device spring Download PDF

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Publication number
WO2020158462A1
WO2020158462A1 PCT/JP2020/001568 JP2020001568W WO2020158462A1 WO 2020158462 A1 WO2020158462 A1 WO 2020158462A1 JP 2020001568 W JP2020001568 W JP 2020001568W WO 2020158462 A1 WO2020158462 A1 WO 2020158462A1
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WO
WIPO (PCT)
Prior art keywords
spring
suspension device
rubber sheet
seat
end turn
Prior art date
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PCT/JP2020/001568
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French (fr)
Japanese (ja)
Inventor
祐一 中澤
野々　一義
浩之 小木曽
英生 山下
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中央発條株式会社
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Application filed by 中央発條株式会社 filed Critical 中央発條株式会社
Publication of WO2020158462A1 publication Critical patent/WO2020158462A1/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details

Definitions

  • the present disclosure relates to a suspension system for a vehicle.
  • the vehicle suspension device disclosed in Patent Document 1 below includes a coiled spring portion, a damper, a spring seat, and a rubber seat.
  • the damper is an expandable member that is arranged in the spring portion and exerts a damping force.
  • the spring seat is a dish-shaped plate provided on one end side in the longitudinal direction of the damper.
  • the rubber sheet is arranged on the end turn portion of the spring portion (the lower end portion in Patent Document 1).
  • the rubber seat is arranged between the spring portion and the spring seat, and transmits the compression load acting on the spring portion to the spring seat. Therefore, a large compressive load acts on the rubber sheet.
  • a gap may occur between the end turn portion of the spring portion and the rubber sheet. ..
  • foreign matter such as sand may enter the gap. If foreign matter that has entered the gap rubs against the spring portion, for example, the spring portion may be damaged early.
  • the rubber sheet be made of rubber with low hardness.
  • a vehicle suspension device includes a coil-shaped spring portion, a spring seat, a rubber seat, and a restriction portion.
  • the spring seat receives a load acting on the spring portion.
  • the rubber sheet is arranged between the spring seat and the end turn portion while being in contact with the end turn portion of the spring part.
  • the regulating portion is configured such that the rubber sheet exceeds a predetermined state (or a predetermined region, a predetermined range, a predetermined space, or a predetermined deformation amount) in a load orthogonal direction. Regulates elastic deformation.
  • the load orthogonal direction is orthogonal to the central axis of the spring portion.
  • a suspension device spring includes a coiled spring portion, a rubber sheet, and a restriction portion.
  • the rubber sheet is in contact with the end turn portion of the spring portion.
  • the regulating portion is configured such that the rubber sheet exceeds a predetermined state (or a predetermined region, a predetermined range, a predetermined space, or a predetermined deformation amount) in a load orthogonal direction. Regulates elastic deformation.
  • the load orthogonal direction is orthogonal to the central axis of the spring portion.
  • the rubber sheet can be made of rubber having low hardness. That is, when a large compression load is applied to the rubber sheet having low hardness, the elastic deformation of the rubber sheet can be regulated by the regulation portion.
  • the vehicle suspension device and the suspension spring described above may be capable of withstanding a predetermined compressive load while suppressing deterioration in the deformation followability of the rubber sheet.
  • At least one member or part described with reference numerals is provided, except when “one” or the like is not specified. That is, if there is no notice such as “one", two or more members may be provided.
  • the suspension spring and the vehicle suspension shown in the present disclosure include at least components such as members or parts described with reference numerals.
  • the vehicle suspension device 1 shown in FIG. 1 is an example of a strut-type suspension device that suspends the front wheel Fh.
  • the vehicle suspension device 1 includes at least a spring portion 3, a damper 5, a spring seat 7, a rubber seat 9, and the like.
  • the vehicle suspension device 1 includes at least the suspension device spring, the damper 5, the spring seat 7, and the like.
  • the spring portion 3 is a spring formed of a metal wire rod in a coil shape.
  • the spring portion 3 suspends the front wheel Fh while elastically deforming mainly in the vertical direction.
  • the damper 5 is arranged in the spring portion 3. The damper 5 expands and contracts in conjunction with the elastic deformation of the spring portion 3 and generates a damping force that restricts the displacement of the front wheel Fh.
  • the damper 5 has a telescopic shape that can be expanded and contracted in the vertical direction.
  • the damper 5 includes at least a cylinder portion 5A, a rod 5B protruding from and retracting from the cylinder portion 5A, and the like.
  • the spring seat 7 is a metal member connected to one end side or the other end side in the longitudinal direction of the damper 5.
  • the spring seat 7 according to the present embodiment is fixed to the cylinder portion 5A located on the lower end side of the damper 5 by welding.
  • the spring seat 7 transmits the force generated on the lower end side of the spring portion 3, that is, the end turn portion 3A (see FIG. 2) to the cylinder portion 5A.
  • the end turn portion 3A of the spring portion 3 means, for example, an end portion of the spring portion 3 in the central axis Lo direction.
  • the force generated on the upper end side of the spring portion 3 is transmitted to the rod 5B via the mount member 10.
  • the mount member 10 is a member for connecting the upper end of the vehicle suspension device 1 to a vehicle body (not shown).
  • the spring seat 7 has a dish shape that is inclined with respect to the expansion/contraction direction of the damper 5 (the vertical direction in this embodiment).
  • the rubber sheet 9 is a rubber sheet member disposed between the spring seat 7 and the end turn portion 3A in a state of being in contact with the end turn portion 3A of the spring part 3.
  • the rubber sheet 9 is pressed by the spring portion 3 toward the spring sheet 7.
  • the natural length of the spring portion 3 is larger than the distance dimension between the spring seat 7 and the mount member 10. That is, when the spring portion 3 is assembled to the vehicle suspension device 1, the spring portion 3 is in a flexurally deformed state.
  • the rubber sheet 9 is made of hard rubber such as natural rubber and has a substantially horseshoe shape or a substantially C shape.
  • a recess 9A into which the end turn portion 3A is fitted is provided on the spring portion 3 side of the rubber sheet 9, as shown in FIG. 4, a recess 9A into which the end turn portion 3A is fitted is provided.
  • the recess 9A is a groove-shaped portion extending along the rubber sheet 9.
  • the suspension spring is provided with restricting portions 11 and 12.
  • the restricting portions 11 and 12 exceed the predetermined state (or the predetermined area, the predetermined range, the predetermined space, or the predetermined deformation amount) of the rubber sheet 9. Is a part for restricting elastic deformation in the load orthogonal direction (for example, the horizontal direction in FIG. 4).
  • the load orthogonal direction is orthogonal to the direction parallel to the central axis Lo of the spring portion 3 (the vertical direction on the paper surface in FIG. 4).
  • the restricting portions 11 and 12 according to the present embodiment can restrict the displacement of the spring portion 3 in the diametrical direction in the load orthogonal direction.
  • the restriction portion 11 is provided on the outside in the diametrical direction with respect to the end turn portion 3A.
  • the restriction portion 12 is provided on the inner side in the diametrical direction with respect to the end turn portion 3A.
  • the restriction portions 11 and 12 according to the present embodiment are wall-shaped portions provided on the spring seat 7.
  • the restricting portions 11 and 12 and the spring seat 7 are integrally molded products made of metal that are integrally molded by plastic working such as press working.
  • the restriction parts 11 and 12 are provided at least at a part corresponding to the rising part 3B (see FIG. 3) of the end turn part 3A.
  • the rising portion 3B refers to, for example, a portion where the lead angle (the angle between the direction parallel to the central axis Lo and the wire) of the wire forming the spring 3 changes significantly.
  • the vehicle suspension device 1 or the suspension spring in which the rubber sheet 9 is made of rubber having low hardness, withstands a predetermined compressive load while suppressing deterioration of the deformation followability of the rubber sheet 9. Can be possible.
  • the restriction parts 11 and 12 are provided at least at a part corresponding to the rising part 3B (see FIG. 3) of the end turn part 3A. Accordingly, it is possible to effectively suppress the deformation of the portion of the rubber sheet 9 on which the largest load acts.
  • the restriction parts 11 and 12 are provided on the spring seat 7. As a result, for example, the man-hours and the manufacturing cost of the vehicle suspension device 1 or the suspension device spring are increased as compared with a configuration in which the restriction portions 11 and 12 are integrated with the rubber sheet 9 by insert molding or adhesion. Can be suppressed.
  • the restricting portions 11 and 12 according to the above-described embodiment were integrally molded with the spring seat 7.
  • the present disclosure is not limited to this.
  • the restriction portions 11 and 12 may be manufactured as separate parts from the spring seat 7 and then integrated with the spring seat 7 by welding or the like.
  • the restriction parts 11 and 12 may be integrated with the rubber sheet 9 by insert molding, adhesion, or the like. In addition, in the said structure, it is desirable that the connection part which connects the control part 10 and the control part 11 is provided.
  • the restricting portion 11 is provided outside the end turn portion 3A in the diametrical direction, and the restricting portion 12 is provided inside the end turn portion 3A in the diametrical direction.
  • the present disclosure is not limited to this.
  • one of the regulation units 11 and 12 may be abolished.
  • a restricting portion that restricts displacement in the direction orthogonal to the load and in the circumferential direction of the end turn portion 3A may be provided.
  • Such a regulating portion regulates, for example, the end surface of the rubber sheet 9 on the rising portion 3B side.
  • restriction parts 11 and 12 are provided at least at a portion corresponding to the rising part 3B of the end turn part 3A.
  • the present disclosure is not limited to this. That is, the restriction parts 11 and 12 may be provided, for example, in a part other than the part corresponding to the rising part 3B.
  • the suspension device for a vehicle and the spring for a suspension device disclosed in the present embodiment have a configuration in which the end turn portion 3A is joined to the rubber sheet 9, or the end turn portion 3A is not joined to the rubber sheet 9, and Any configuration may be used in which the winding portion 3A is fitted in the recess 9A.
  • the present disclosure is not limited to the above-described embodiments as long as it matches the intent of the disclosure described in the above-described embodiments. Therefore, one of the configuration in which at least two of the plurality of embodiments described above are combined, or any of the configuration requirements illustrated in the figures or described with reference numerals in the above embodiments is abolished. It may be configured as described above.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A vehicular suspension device according to one aspect of the present invention comprises a coil-shaped spring part, a spring seat, a rubber seat, and a limiting part. The spring seat receives a load acting on the spring part. The rubber seat is disposed between the spring seat and the end turn part of the spring part with the rubber seat in contact with the end turn part. The limiting part limits elastic deformation in a load-orthogonal direction when the rubber seat exceeds a preset state. The load-orthogonal direction is orthogonal to the center axis line of the spring part.

Description

車両用懸架装置、及び懸架装置用ばねSuspension device for vehicle and spring for suspension device 関連出願の相互参照Cross-reference of related applications
　本国際出願は、２０１９年１月２８日に日本国特許庁に出願された日本国特許出願第２０１９－０１２４３０号に基づく優先権を主張するものであり、日本国特許出願第２０１９－０１２４３０号の全内容を参照により本国際出願に援用する。 This international application claims priority based on Japanese Patent Application No. 2019-012430 filed with the Japan Patent Office on January 28, 2019, and is based on Japanese Patent Application No. 2019-012430. The entire contents are incorporated into the present international application by reference.
　本開示は、車両用懸架装置に関する。 The present disclosure relates to a suspension system for a vehicle.
　下記特許文献１に開示された車両用懸架装置は、コイル状のばね部、ダンパー、スプリングシート及びラバーシートを備える。ダンパーは、ばね部内に配置されて減衰力を発揮する伸縮可能な部材である。 The vehicle suspension device disclosed in Patent Document 1 below includes a coiled spring portion, a damper, a spring seat, and a rubber seat. The damper is an expandable member that is arranged in the spring portion and exerts a damping force.
　スプリングシートは、ダンパーの長手方向一端側に設けられた皿状のプレートである。ラバーシートは、ばね部の座巻部（特許文献１では、下端部）に配置される。 The spring seat is a dish-shaped plate provided on one end side in the longitudinal direction of the damper. The rubber sheet is arranged on the end turn portion of the spring portion (the lower end portion in Patent Document 1).
特開２０１６－１９１４５３号公報JP, 2016-191453, A
　ラバーシートは、ばね部とスプリングシートとの間に配置されて、ばね部に作用する圧縮荷重をスプリングシートに伝達する。このため、当該ラバーシートには、大きな圧縮荷重が作用する。 The rubber seat is arranged between the spring portion and the spring seat, and transmits the compression load acting on the spring portion to the spring seat. Therefore, a large compressive load acts on the rubber sheet.
　ラバーシートが過度に圧縮変形してしまうことを防止するには、当該ラバーシートを硬度が高いゴムにて構成する必要がある。しかし、硬度が高いゴムにて構成されたラバーシートでは、ばね部の変形に対するラバーシートの変形追従性が低下する。 In order to prevent the rubber sheet from being excessively compressed and deformed, it is necessary to configure the rubber sheet with rubber having high hardness. However, in a rubber sheet made of rubber having a high hardness, the deformation followability of the rubber sheet with respect to the deformation of the spring portion is deteriorated.
　つまり、ばね部の変形量が断続的に変化した場合において、ラバーシートの変形追従性が低いと、例えば、当該ばね部の座巻部とラバーシートとの間に隙間が発生する可能性がある。当該隙間が発生すると、当該隙間に砂等の異物が入り込む可能性ある。隙間に入り込んだ異物がばね部と擦れ合うと、例えば、ばね部が早期に損傷してしまう可能性がある。 That is, when the deformation amount of the spring portion changes intermittently and the deformation followability of the rubber sheet is low, for example, a gap may occur between the end turn portion of the spring portion and the rubber sheet. .. When the gap is generated, foreign matter such as sand may enter the gap. If foreign matter that has entered the gap rubs against the spring portion, for example, the spring portion may be damaged early.
　なお、ラバーシートの変形追従性を向上させるには、ラバーシートを硬度が低いゴムにて構成することが望ましい。しかし、硬度が低いゴムにて構成されたラバーシートは、大きな圧縮荷重に耐えることが難しい。 In addition, in order to improve the deformation followability of the rubber sheet, it is desirable that the rubber sheet be made of rubber with low hardness. However, it is difficult for a rubber sheet made of rubber having low hardness to withstand a large compressive load.
　本開示の１つの局面は、ラバーシートの変形追従性が低下することを抑制しながら、所定の圧縮荷重に耐えることが可能な車両用懸架装置又は懸架装置用ばねを提供できることが望ましい。 In one aspect of the present disclosure, it is desirable to be able to provide a suspension device for a vehicle or a spring for a suspension device that can withstand a predetermined compressive load while suppressing deterioration of the deformation followability of the rubber sheet.
　本開示の１つの局面における車両用懸架装置は、コイル状のばね部と、スプリングシートと、ラバーシートと、規制部とを備える。スプリングシートは、ばね部に作用する荷重を受ける。ラバーシートは、ばね部の座巻部に接触した状態でスプリングシートと当該座巻部との間に配置される。規制部は、ラバーシートが予め決められた状態（あるいは、予め決められた領域、あるいは、予め決められた範囲、あるいは予め決められた空間、あるいは予め決められた変形量）を越えて荷重直交方向に弾性変形することを規制する。荷重直交方向は、ばね部の中心軸線と直交している。 A vehicle suspension device according to an aspect of the present disclosure includes a coil-shaped spring portion, a spring seat, a rubber seat, and a restriction portion. The spring seat receives a load acting on the spring portion. The rubber sheet is arranged between the spring seat and the end turn portion while being in contact with the end turn portion of the spring part. The regulating portion is configured such that the rubber sheet exceeds a predetermined state (or a predetermined region, a predetermined range, a predetermined space, or a predetermined deformation amount) in a load orthogonal direction. Regulates elastic deformation. The load orthogonal direction is orthogonal to the central axis of the spring portion.
　本開示の別の１つの局面における懸架装置用ばねは、コイル状のばね部と、ラバーシートと、規制部とを備える。ラバーシートは、ばね部の座巻部に接触している。規制部は、ラバーシートが予め決められた状態（あるいは、予め決められた領域、あるいは、予め決められた範囲、あるいは予め決められた空間、あるいは予め決められた変形量）を越えて荷重直交方向に弾性変形することを規制する。荷重直交方向は、ばね部の中心軸線と直交している。 A suspension device spring according to another aspect of the present disclosure includes a coiled spring portion, a rubber sheet, and a restriction portion. The rubber sheet is in contact with the end turn portion of the spring portion. The regulating portion is configured such that the rubber sheet exceeds a predetermined state (or a predetermined region, a predetermined range, a predetermined space, or a predetermined deformation amount) in a load orthogonal direction. Regulates elastic deformation. The load orthogonal direction is orthogonal to the central axis of the spring portion.
　上述の車両用懸架装置及び上述の懸架装置用ばねでは、硬度が低いゴムにてラバーシートを構成でき得る。つまり、硬度が低いゴム製のラバーシートに大きな圧縮荷重が作用した場合には、規制部にて当該ラバーシートの弾性変形が規制され得る。 In the vehicle suspension device and the suspension spring described above, the rubber sheet can be made of rubber having low hardness. That is, when a large compression load is applied to the rubber sheet having low hardness, the elastic deformation of the rubber sheet can be regulated by the regulation portion.
　したがって、上述の車両用懸架装置及び上述の懸架装置用ばねでは、ラバーシートの変形追従性が低下することを抑制しながら、所定の圧縮荷重に耐えることが可能となり得る。 Therefore, the vehicle suspension device and the suspension spring described above may be capable of withstanding a predetermined compressive load while suppressing deterioration in the deformation followability of the rubber sheet.
第１実施形態に係る車両用懸架装置を示す図である。It is a figure which shows the suspension system for vehicles which concerns on 1st Embodiment. 第１実施形態に係るばね部を示す図である。It is a figure which shows the spring part which concerns on 1st Embodiment. 第１実施形態に係るばね部を示す図である。It is a figure which shows the spring part which concerns on 1st Embodiment. 第１実施形態に係る規制部を示す図である。It is a figure which shows the control part which concerns on 1st Embodiment.
　１… 車両用懸架装置
　３… ばね部
　７… スプリングシート
　９… ラバーシート
　１１、１２… 規制部 DESCRIPTION OF SYMBOLS 1... Suspension device for vehicles 3... Spring part 7... Spring seat 9... Rubber seat 11, 12... Regulator part
　以下の「発明の実施形態」は、本開示の技術的範囲に属する実施形態の一例を示すものである。つまり、特許請求の範囲に記載された発明特定事項等は、下記の実施形態に示された具体的構成や構造等に限定されるものではない。 The following “embodiment of the invention” shows an example of an embodiment within the technical scope of the present disclosure. That is, the matters specifying the invention described in the claims are not limited to the specific configurations and structures shown in the following embodiments.
　なお、各図に付された方向を示す矢印及び斜線等は、各図相互の関係及び各部材又は部位の形状を理解し易くするために記載されたものである。したがって、本開示は、各図に付された方向に限定されるものではない。 Note that the arrows and diagonal lines indicating the directions attached to the drawings are provided to make it easier to understand the relationship between the drawings and the shape of each member or site. Therefore, the present disclosure is not limited to the directions shown in the drawings.
　少なくとも符号が付されて説明された部材又は部位は、「１つの」等の断りがされた場合を除き、少なくとも１つ設けられている。つまり、「１つの」等の断りがない場合には、当該部材は２以上設けられていてもよい。本開示に示された懸架装置用ばね及び車両用懸架装置は、少なくとも符号が付されて説明された部材又は部位等の構成要素を備える。 ∙ At least one member or part described with reference numerals is provided, except when "one" or the like is not specified. That is, if there is no notice such as "one", two or more members may be provided. The suspension spring and the vehicle suspension shown in the present disclosure include at least components such as members or parts described with reference numerals.
　（第１実施形態）
　１．車両用懸架装置の構成
　図１に示される車両用懸架装置１は、前輪Ｆｈを懸架するストラット式懸架装置の一例である。当該車両用懸架装置１は、ばね部３、ダンパー５、スプリングシート７及びラバーシート９等を少なくとも備える。 (First embodiment)
1. Configuration of Vehicle Suspension Device The vehicle suspension device 1 shown in FIG. 1 is an example of a strut-type suspension device that suspends the front wheel Fh. The vehicle suspension device 1 includes at least a spring portion 3, a damper 5, a spring seat 7, a rubber seat 9, and the like.
　なお、車両用懸架装置１では、少なくともばね部３及びラバーシート９により懸架装置用ばねが構成されている。つまり、車両用懸架装置１は、懸架装置用ばね、ダンパー５及びスプリングシート７等を少なくとも備える。 In the vehicle suspension system 1, at least the spring portion 3 and the rubber sheet 9 constitute a suspension system spring. That is, the vehicle suspension device 1 includes at least the suspension device spring, the damper 5, the spring seat 7, and the like.
　ばね部３は、金属製の線材がコイル状に成形されたばねである。当該ばね部３は、主に上下方向に弾性変形しながら前輪Ｆｈを懸架する。ダンパー５は、ばね部３内に配置されている。当該ダンパー５は、ばね部３の弾性変形と連動して伸縮しながら、前輪Ｆｈの変位を規制する減衰力を発生する。 The spring portion 3 is a spring formed of a metal wire rod in a coil shape. The spring portion 3 suspends the front wheel Fh while elastically deforming mainly in the vertical direction. The damper 5 is arranged in the spring portion 3. The damper 5 expands and contracts in conjunction with the elastic deformation of the spring portion 3 and generates a damping force that restricts the displacement of the front wheel Fh.
　本実施形態に係るダンパー５は、上下方向に伸縮可能なテレスコープ状である。具体的には、ダンパー５は、シリンダ部５Ａ及び当該シリンダ部５Ａに対して出没するロッド５Ｂ等を少なくとも備えている。 The damper 5 according to the present embodiment has a telescopic shape that can be expanded and contracted in the vertical direction. Specifically, the damper 5 includes at least a cylinder portion 5A, a rod 5B protruding from and retracting from the cylinder portion 5A, and the like.
　スプリングシート７は、ダンパー５の長手方向一端側又は他端側に連結された金属製の部材である。なお、本実施形態に係るスプリングシート７は、ダンパー５の下端側に位置するシリンダ部５Ａに溶接により固定されている。 The spring seat 7 is a metal member connected to one end side or the other end side in the longitudinal direction of the damper 5. The spring seat 7 according to the present embodiment is fixed to the cylinder portion 5A located on the lower end side of the damper 5 by welding.
　当該スプリングシート７は、ばね部３の下端側、つまり座巻部３Ａ（図２参照）に発生する力をシリンダ部５Ａに伝達する。ばね部３の座巻部３Ａとは、例えば、ばね部３における中心軸線Ｌｏ方向の端部をいう。 The spring seat 7 transmits the force generated on the lower end side of the spring portion 3, that is, the end turn portion 3A (see FIG. 2) to the cylinder portion 5A. The end turn portion 3A of the spring portion 3 means, for example, an end portion of the spring portion 3 in the central axis Lo direction.
　ばね部３の上端側に発生する力は、マウント部材１０を介してロッド５Ｂに伝達される。マウント部材１０は、車両用懸架装置１の上端を車両ボディ（図示せず。）に連結するための部材である。 The force generated on the upper end side of the spring portion 3 is transmitted to the rod 5B via the mount member 10. The mount member 10 is a member for connecting the upper end of the vehicle suspension device 1 to a vehicle body (not shown).
　スプリングシート７は、図１に示されるように、ダンパー５の伸縮方向（本実施形態では、上下方向）に対して傾いた皿状である。ラバーシート９は、ばね部３の座巻部３Ａに接触した状態でスプリングシート７と当該座巻部３Ａとの間に配置されたゴム製のシート部材である。 As shown in FIG. 1, the spring seat 7 has a dish shape that is inclined with respect to the expansion/contraction direction of the damper 5 (the vertical direction in this embodiment). The rubber sheet 9 is a rubber sheet member disposed between the spring seat 7 and the end turn portion 3A in a state of being in contact with the end turn portion 3A of the spring part 3.
　ラバーシート９は、ばね部３によりスプリングシート７に向けて押圧されている。なお、ばね部３の自然長は、スプリングシート７とマウント部材１０との間の距離寸法より大きい。つまり、ばね部３が車両用懸架装置１に組み付けられた状態では、当該ばね部３は、撓み変形した状態となっている。 The rubber sheet 9 is pressed by the spring portion 3 toward the spring sheet 7. The natural length of the spring portion 3 is larger than the distance dimension between the spring seat 7 and the mount member 10. That is, when the spring portion 3 is assembled to the vehicle suspension device 1, the spring portion 3 is in a flexurally deformed state.
　２．ラバーシートの変形制御機能
　ラバーシート９は、天然ゴム系ゴム等の硬質なゴム製であって、略馬蹄形又は略Ｃ字状に構成されている。当該ラバーシート９におけるばね部３側には、図４に示されるように、座巻部３Ａが嵌り込む凹部９Ａが設けられている。当該凹部９Ａは、ラバーシート９に沿って延びる溝状の部位である。 2. Deformation Control Function of Rubber Sheet The rubber sheet 9 is made of hard rubber such as natural rubber and has a substantially horseshoe shape or a substantially C shape. On the spring portion 3 side of the rubber sheet 9, as shown in FIG. 4, a recess 9A into which the end turn portion 3A is fitted is provided. The recess 9A is a groove-shaped portion extending along the rubber sheet 9.
　懸架装置用ばねは、図４に示されるように、規制部１１、１２を備える。規制部１１、１２は、ラバーシート９が予め決められた状態（あるいは、予め決められた領域、あるいは、予め決められた範囲、あるいは予め決められた空間、あるいは予め決められた変形量）を越えて荷重直交方向（例えば、図４の左右方向）に弾性変形することを規制するための部位である。 As shown in FIG. 4, the suspension spring is provided with restricting portions 11 and 12. The restricting portions 11 and 12 exceed the predetermined state (or the predetermined area, the predetermined range, the predetermined space, or the predetermined deformation amount) of the rubber sheet 9. Is a part for restricting elastic deformation in the load orthogonal direction (for example, the horizontal direction in FIG. 4).
　荷重直交方向は、ばね部３の中心軸線Ｌｏと平行な方向（図４では、紙面上下方向）に直交している。なお、本実施形態に係る規制部１１、１２は、荷重直交方向のうちばね部３の直径方向の変位を規制可能である。 The load orthogonal direction is orthogonal to the direction parallel to the central axis Lo of the spring portion 3 (the vertical direction on the paper surface in FIG. 4). The restricting portions 11 and 12 according to the present embodiment can restrict the displacement of the spring portion 3 in the diametrical direction in the load orthogonal direction.
　具体的には、規制部１１は、座巻部３Ａに対して直径方向外側に設けられている。規制部１２は、座巻部３Ａに対して直径方向内側に設けられている。本実施形態に係る規制部１１、１２は、スプリングシート７に設けられた壁状の部位である。なお、規制部１１、１２とスプリングシート７とは、プレス加工等の塑性加工にて一体成形された金属製の一体成形品である。 Specifically, the restriction portion 11 is provided on the outside in the diametrical direction with respect to the end turn portion 3A. The restriction portion 12 is provided on the inner side in the diametrical direction with respect to the end turn portion 3A. The restriction portions 11 and 12 according to the present embodiment are wall-shaped portions provided on the spring seat 7. The restricting portions 11 and 12 and the spring seat 7 are integrally molded products made of metal that are integrally molded by plastic working such as press working.
　規制部１１、１２は、少なくとも座巻部３Ａの立ち上がり部３Ｂ（図３参照）に対応する部位に設けられている。立ち上がり部３Ｂとは、例えば、ばね部３を構成する線材のリード角（中心軸線Ｌｏと平行な方向と当該線材とのなす角）が大きく変化する部位をいう。 The restriction parts 11 and 12 are provided at least at a part corresponding to the rising part 3B (see FIG. 3) of the end turn part 3A. The rising portion 3B refers to, for example, a portion where the lead angle (the angle between the direction parallel to the central axis Lo and the wire) of the wire forming the spring 3 changes significantly.
　３．本実施形態に係る車両用懸架装置及び懸架装置用ばねの特徴
　本実施形態では、ラバーシート９に大きな圧縮荷重が作用した場合には、規制部１１、１２にて当該ラバーシート９の弾性変形が規制され得る。したがって、本実施形態では、硬度が低いゴムにてラバーシート９を構成でき得る。 3. Features of Vehicle Suspension Device and Suspension Device Spring According to the Present Embodiment In the present embodiment, when a large compressive load acts on the rubber sheet 9, elastic deformation of the rubber sheet 9 is caused by the restricting portions 11 and 12. Can be regulated. Therefore, in the present embodiment, the rubber sheet 9 can be made of rubber having low hardness.
　つまり、ラバーシート９が硬度の低いゴムにて構成された車両用懸架装置１又は懸架装置用ばねは、ラバーシート９の変形追従性が低下することを抑制しながら、所定の圧縮荷重に耐えることが可能となり得る。 That is, the vehicle suspension device 1 or the suspension spring, in which the rubber sheet 9 is made of rubber having low hardness, withstands a predetermined compressive load while suppressing deterioration of the deformation followability of the rubber sheet 9. Can be possible.
　規制部１１、１２は、少なくとも座巻部３Ａの立ち上がり部３Ｂ（図３参照）に対応する部位に設けられている。これにより、ラバーシート９のうち最も大きな荷重が作用する部位の変形を効果的に抑制でき得る。 The restriction parts 11 and 12 are provided at least at a part corresponding to the rising part 3B (see FIG. 3) of the end turn part 3A. Accordingly, it is possible to effectively suppress the deformation of the portion of the rubber sheet 9 on which the largest load acts.
　規制部１１、１２は、スプリングシート７に設けられている。これにより、例えば、規制部１１、１２がインサート成形又は接着等によりラバーシート９に一体化された構成等に比べて、車両用懸架装置１又は懸架装置用ばねの製造工数及び製造原価が上昇することが抑制され得る。 The restriction parts 11 and 12 are provided on the spring seat 7. As a result, for example, the man-hours and the manufacturing cost of the vehicle suspension device 1 or the suspension device spring are increased as compared with a configuration in which the restriction portions 11 and 12 are integrated with the rubber sheet 9 by insert molding or adhesion. Can be suppressed.
　（その他の実施形態）
　上述の実施形態に係る規制部１１、１２は、スプリングシート７との一体成形品であった。しかし、本開示はこれに限定されるものではない。例えば、規制部１１、１２は、スプリングシート７と別部品として製造された後、スプリングシート７に溶接等にて一体化されてもよい。 (Other embodiments)
The restricting portions 11 and 12 according to the above-described embodiment were integrally molded with the spring seat 7. However, the present disclosure is not limited to this. For example, the restriction portions 11 and 12 may be manufactured as separate parts from the spring seat 7 and then integrated with the spring seat 7 by welding or the like.
　また、規制部１１、１２は、インサート成形又は接着等によりラバーシート９に一体化されてもよい。なお、当該構成においては、規制部１０と規制部１１とを連結する連結部が設けられていることが望ましい。 The restriction parts 11 and 12 may be integrated with the rubber sheet 9 by insert molding, adhesion, or the like. In addition, in the said structure, it is desirable that the connection part which connects the control part 10 and the control part 11 is provided.
　上述の実施形態では、規制部１１は、座巻部３Ａに対して直径方向外側に設けられ、規制部１２は、座巻部３Ａに対して直径方向内側に設けられていた。しかし、本開示はこれに限定されるものではない。 In the above-described embodiment, the restricting portion 11 is provided outside the end turn portion 3A in the diametrical direction, and the restricting portion 12 is provided inside the end turn portion 3A in the diametrical direction. However, the present disclosure is not limited to this.
　例えば、規制部１１、１２のうちいずれか一方は廃止されてもよい。あるいは、荷重直交方向のうち座巻部３Ａの円周方向と一致する方向の変位を規制する規制部が設けられてもよい。このような規制部は、例えば、ラバーシート９のうち立ち上がり部３Ｂ側の端面を規制する。 For example, one of the regulation units 11 and 12 may be abolished. Alternatively, a restricting portion that restricts displacement in the direction orthogonal to the load and in the circumferential direction of the end turn portion 3A may be provided. Such a regulating portion regulates, for example, the end surface of the rubber sheet 9 on the rising portion 3B side.
　上述の実施形態に係る規制部１１、１２は、少なくとも座巻部３Ａの立ち上がり部３Ｂに対応する部位に設けられていた。しかし、本開示はこれに限定されるものではない。すなわち、規制部１１、１２は、例えば、立ち上がり部３Ｂに対応する部位以外の部位に設けられてもよい。 The restriction parts 11 and 12 according to the above-described embodiment are provided at least at a portion corresponding to the rising part 3B of the end turn part 3A. However, the present disclosure is not limited to this. That is, the restriction parts 11 and 12 may be provided, for example, in a part other than the part corresponding to the rising part 3B.
　本実施形態に開示された車両用懸架装置及び懸架装置用ばねは、座巻部３Ａがラバーシート９に接合された構成、又は座巻部３Ａがラバーシート９に接合されることなく、当該座巻部３Ａが凹部９Ａに嵌り込んだ構成のいずれを備えてもよい。 The suspension device for a vehicle and the spring for a suspension device disclosed in the present embodiment have a configuration in which the end turn portion 3A is joined to the rubber sheet 9, or the end turn portion 3A is not joined to the rubber sheet 9, and Any configuration may be used in which the winding portion 3A is fitted in the recess 9A.
　さらに、本開示は、上述の実施形態に記載された開示の趣旨に合致するものであればよく、上述の実施形態に限定されるものではない。したがって、上述した複数の実施形態のうち少なくとも２つの実施形態が組み合わせられた構成、又は上述の実施形態において、図示された構成要件もしくは符号を付して説明された構成要件のうちいずれかが廃止された構成でもよい。 Further, the present disclosure is not limited to the above-described embodiments as long as it matches the intent of the disclosure described in the above-described embodiments. Therefore, one of the configuration in which at least two of the plurality of embodiments described above are combined, or any of the configuration requirements illustrated in the figures or described with reference numerals in the above embodiments is abolished. It may be configured as described above.

Claims (4)

  1. 　車両用懸架装置であって、
    　コイル状のばね部と、
    　前記ばね部に作用する荷重を受けるように構成されたスプリングシートと、
    　前記ばね部の座巻部に接触した状態で前記スプリングシートと当該座巻部との間に配置されたラバーシートと、
    　前記ラバーシートが予め決められた状態を越えて荷重直交方向に弾性変形することを規制するように構成された規制部であって、前記荷重直交方向は、前記ばね部の中心軸線と直交している、規制部と
    　を備える車両用懸架装置。     A suspension system for a vehicle,
    A coiled spring part,
    A spring seat configured to receive a load acting on the spring portion,
    A rubber sheet disposed between the spring seat and the end turn portion while being in contact with the end turn portion of the spring portion;
    A restricting portion configured to restrict elastic deformation of the rubber sheet beyond a predetermined state in a load orthogonal direction, wherein the load orthogonal direction is orthogonal to a central axis of the spring portion. A suspension system for a vehicle, which has a regulation section.
  2. 　前記規制部は、少なくとも前記座巻部の立ち上がり部に対応する部位に設けられている請求項１に記載の車両用懸架装置。 The vehicle suspension device according to claim 1, wherein the restriction portion is provided at least at a portion corresponding to a rising portion of the end turn portion.
  3. 　前記規制部は、前記スプリングシートに設けられている請求項１又は２に記載の車両用懸架装置。 The vehicle suspension device according to claim 1 or 2, wherein the restriction portion is provided on the spring seat.
  4. 　車両用懸架装置に適用される懸架装置用ばねであって、
    　コイル状のばね部と、
    　前記ばね部の座巻部に接触したラバーシートと、
    　前記ラバーシートが予め決められた状態を越えて荷重直交方向に弾性変形することを規制するように構成された規制部であって、前記荷重直交方向は、前記ばね部の中心軸線と直交している、規制部と
    　を備える懸架装置用ばね。     A spring for a suspension device applied to a suspension device for a vehicle, comprising:
    A coiled spring part,
    A rubber sheet in contact with the end turn portion of the spring portion,
    A restricting portion configured to restrict elastic deformation of the rubber sheet beyond a predetermined state in a load orthogonal direction, wherein the load orthogonal direction is orthogonal to a central axis of the spring portion. A spring for a suspension system that has a regulating part.
PCT/JP2020/001568 2019-01-28 2020-01-17 Vehicular suspension device, and suspension device spring WO2020158462A1 (en)

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JP2019012430A JP2020118286A (en) 2019-01-28 2019-01-28 Vehicle suspension device
JP2019-012430 2019-01-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11241746A (en) * 1998-02-26 1999-09-07 Tokai Rubber Ind Ltd Vehicular coil spring seat
JP2014199134A (en) * 2013-03-12 2014-10-23 株式会社ショーワ Elastic sheet and suspension device
JP2016056895A (en) * 2014-09-10 2016-04-21 株式会社ショーワ Elastic body sheet
JP2016191454A (en) * 2015-03-31 2016-11-10 Ｋｙｂ株式会社 Spring Guide and Suspension Device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11241746A (en) * 1998-02-26 1999-09-07 Tokai Rubber Ind Ltd Vehicular coil spring seat
JP2014199134A (en) * 2013-03-12 2014-10-23 株式会社ショーワ Elastic sheet and suspension device
JP2016056895A (en) * 2014-09-10 2016-04-21 株式会社ショーワ Elastic body sheet
JP2016191454A (en) * 2015-03-31 2016-11-10 Ｋｙｂ株式会社 Spring Guide and Suspension Device

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