WO2025154729A1 - 懸架用コイルばね装置 - Google Patents

懸架用コイルばね装置

Info

Publication number
WO2025154729A1
WO2025154729A1 PCT/JP2025/000988 JP2025000988W WO2025154729A1 WO 2025154729 A1 WO2025154729 A1 WO 2025154729A1 JP 2025000988 W JP2025000988 W JP 2025000988W WO 2025154729 A1 WO2025154729 A1 WO 2025154729A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating layer
coil spring
receiving member
spring
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/000988
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
諭 蓮見
剛 松田
大輔 伊庭野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NHK Spring Co Ltd
Original Assignee
NHK Spring Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP2025571067A priority Critical patent/JPWO2025154729A1/ja
Publication of WO2025154729A1 publication Critical patent/WO2025154729A1/ja
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Definitions

  • the present invention relates to a suspension coil spring device.
  • This application claims priority to U.S. patent application Ser. No. 63/621,119, filed in the United States on Jan. 16, 2024, the contents of which are incorporated herein by reference.
  • Suspension coil spring devices equipped with coil springs are used in the suspension mechanisms of vehicles such as automobiles, and for suspending equipment. If a foreign object such as a flying stone hits the coil spring while the automobile is moving, the surface of the coil spring will be damaged, causing corrosion and breakage. For this reason, the surface of the coil spring is protected by a coating.
  • the present invention aims to provide a suspension coil spring device that can prevent damage to the coating of the coil spring.
  • the suspension coil spring device comprises a coil spring having an upper winding seat portion and a lower winding seat portion, with a coating layer fixed to at least a portion of the lower winding seat portion, and a spring receiving member supporting the lower winding seat portion, at least a portion of the spring receiving member supporting the lower winding seat portion via the coating layer, the coating layer being provided in a non-adhered state on the spring receiving member, the coil spring being provided with a coating film, and the material of the coating film and the material of the coating layer being different from each other.
  • the suspension coil spring device comprises a coil spring having an upper seat winding portion and a lower seat winding portion, with a coating layer fixed to at least a portion of the lower seat winding portion, and a spring receiving member supporting the lower seat winding portion, the coating layer and the spring receiving member being provided at different positions in the coil circumferential direction around the coil axis of the coil spring, the coil spring being provided with a coating film, and the material of the coating film and the material of the coating layer being different from each other.
  • the suspension coil spring device of the present invention can prevent damage to the coating of the coil spring.
  • the coating layer 30 extends outward beyond the end of the recess 21.
  • the coating layer 30 has a first protruding portion 31 (protruding portion) that extends outward in the circumferential direction of the wire around the central axis O2 of the wire 12 beyond the spring bearing member 20.
  • the surface pressure at the end of the wire circumferential direction of the contact portion between the spring bearing member 20 and the coating layer 30 can be improved, so that foreign matter can be more effectively prevented from entering between the lower seat turn portion 10a and the spring bearing member 20.
  • the coating layer 30 is disposed on the inside of the end of the recess 21 in a cross-sectional view perpendicular to the central axis O2 of the wire 12.
  • the end of the coating layer 30 in the circumferential direction of the wire is disposed on the inside of the spring bearing member 20 in the circumferential direction of the wire.
  • the end portion of the coating layer 30 in the circumferential direction of the coil is disposed more inwardly than the spring receiving member 20 in the circumferential direction of the coil.
  • a suspension coil spring device 3 according to a third embodiment of the present invention will be described with reference to Fig. 8.
  • Fig. 8 is a view of the suspension coil spring device 3 as viewed from below.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, and only the differences will be described.
  • the suspension coil spring device 3 includes a spring receiving member 40 instead of the spring receiving member 20.
  • the spring receiving member 40 has a first portion 41, a second portion 42, and a third portion 43 that are spaced apart in the coil circumferential direction.
  • the first portion 41, the second portion 42, and the third portion 43 are arranged so as not to overlap with the center of the lower seat turn portion 10a in the coil circumferential direction.
  • the coating layer 30 is provided between the first portion 41 and the second portion 42, and between the second portion 42 and the third portion 43 in the coil circumferential direction.
  • the coating layer 30 and the spring receiving member 40 (the first portion 41, the second portion 42, and the third portion 43) are provided at different positions in the coil circumferential direction. Therefore, in this embodiment, the coating layer 30 does not contact the spring receiving member 40.
  • the stress generated when a load is applied to the coil spring 10 is the largest on the inner diameter side of the coil spring 10.
  • the position where the stress is high in the lower seat winding portion 10a is called the high stress position.
  • the range where the spring receiving member 40 (first portion 41, second portion 42, and third portion 43) overlaps with the high stress position is smaller than when the spring receiving member is continuously provided in the coil circumferential direction.
  • the suspension coil spring device 3 of this embodiment includes a coil spring 10 having an upper end winding portion 10b and a lower end winding portion 10a with a coating layer 30 fixed to at least a portion of the lower end winding portion 10a, and a spring bearing member 40 supporting the lower end winding portion 10a.
  • the coating layer 30 and the spring bearing member 40 are provided at different positions in the coil circumferential direction.
  • the coil spring 10 is provided with a coating film 14, and the material of the coating film 14 and the material of the coating layer 30 are different from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
PCT/JP2025/000988 2024-01-16 2025-01-15 懸架用コイルばね装置 Pending WO2025154729A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2025571067A JPWO2025154729A1 (https=) 2024-01-16 2025-01-15

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202463621119P 2024-01-16 2024-01-16
US63/621,119 2024-01-16

Publications (1)

Publication Number Publication Date
WO2025154729A1 true WO2025154729A1 (ja) 2025-07-24

Family

ID=96471541

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/000988 Pending WO2025154729A1 (ja) 2024-01-16 2025-01-15 懸架用コイルばね装置

Country Status (2)

Country Link
JP (1) JPWO2025154729A1 (https=)
WO (1) WO2025154729A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015190538A (ja) * 2014-03-28 2015-11-02 日本発條株式会社 懸架用コイルばね
JP2016049965A (ja) * 2014-08-28 2016-04-11 日本発條株式会社 車両用サスペンション部材
JP2016194317A (ja) * 2015-03-31 2016-11-17 株式会社ショーワ サスペンション装置および弾性体シート
JP2019157997A (ja) * 2018-03-13 2019-09-19 中央発條株式会社 懸架装置用スプリング
JP2023522765A (ja) * 2020-04-27 2023-05-31 ティッセンクルップ フェダーン ウント スタビリサトーレン ゲゼルシャフト ミット ベシュレンクテル ハフツング シャシー用のばねアセンブリ、ばねアセンブリを備える乗り物シャシー、乗り物シャシー用のばねアセンブリを作製するための方法、及びばねアセンブリの使用

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015190538A (ja) * 2014-03-28 2015-11-02 日本発條株式会社 懸架用コイルばね
JP2016049965A (ja) * 2014-08-28 2016-04-11 日本発條株式会社 車両用サスペンション部材
JP2016194317A (ja) * 2015-03-31 2016-11-17 株式会社ショーワ サスペンション装置および弾性体シート
JP2019157997A (ja) * 2018-03-13 2019-09-19 中央発條株式会社 懸架装置用スプリング
JP2023522765A (ja) * 2020-04-27 2023-05-31 ティッセンクルップ フェダーン ウント スタビリサトーレン ゲゼルシャフト ミット ベシュレンクテル ハフツング シャシー用のばねアセンブリ、ばねアセンブリを備える乗り物シャシー、乗り物シャシー用のばねアセンブリを作製するための方法、及びばねアセンブリの使用

Also Published As

Publication number Publication date
JPWO2025154729A1 (https=) 2025-07-24

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