JPS5663139A - Coil spring - Google Patents

Coil spring

Info

Publication number
JPS5663139A
JPS5663139A JP14013979A JP14013979A JPS5663139A JP S5663139 A JPS5663139 A JP S5663139A JP 14013979 A JP14013979 A JP 14013979A JP 14013979 A JP14013979 A JP 14013979A JP S5663139 A JPS5663139 A JP S5663139A
Authority
JP
Japan
Prior art keywords
coil
diameter
section
spring
cross
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
JP14013979A
Other languages
Japanese (ja)
Inventor
Takami Inoue
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.)
Chuo Hatsujo KK
Chuo Spring Co Ltd
Original Assignee
Chuo Hatsujo KK
Chuo 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 Chuo Hatsujo KK, Chuo Spring Co Ltd filed Critical Chuo Hatsujo KK
Priority to JP14013979A priority Critical patent/JPS5663139A/en
Publication of JPS5663139A publication Critical patent/JPS5663139A/en
Pending legal-status Critical Current

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
    • F16F1/08—Wound springs with turns lying in mainly conical surfaces, i.e. characterised by varying diameter

Abstract

PURPOSE:To make easier the selection of spring constant and the prevention of anomalous sound at the time of operation by forming a cylindrical coil at the central portion of a spring and forming a truncated conical coil with reduced cross section and diameter toward its end portion. CONSTITUTION:The cylindrical coil 7 of the central portion of a coil spring is formed by plurally winding the same diameter wire material 9 of a circular cross section into the same coil diameter D2, and furthermore a wire material 9' of a cross section reducing continuously and gradually from the end of a cylindrical coil 7 toward an end coil 10 is wound in such a way that the diameter is gradually reduced from a coil diameter D3 to a coil diameter D4<n> and also a truncated conical coil 8 meeting the mutual relativity is formed by winding in such a way that the adjacent coil wires 9' are mutually positioned in a flat swirl state at the time of maximum loading.
JP14013979A 1979-10-30 1979-10-30 Coil spring Pending JPS5663139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14013979A JPS5663139A (en) 1979-10-30 1979-10-30 Coil spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14013979A JPS5663139A (en) 1979-10-30 1979-10-30 Coil spring

Publications (1)

Publication Number Publication Date
JPS5663139A true JPS5663139A (en) 1981-05-29

Family

ID=15261777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14013979A Pending JPS5663139A (en) 1979-10-30 1979-10-30 Coil spring

Country Status (1)

Country Link
JP (1) JPS5663139A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699245A1 (en) * 1992-12-15 1994-06-17 Renault Helical suspension spring for vehicles with variable flexibility - includes central part having bi-conic configuration which extends from median zone and whose one spiral embeds itself inside larger dia. spiral under heavy load
US6193225B1 (en) * 1997-11-27 2001-02-27 Tama Spring Co., Ltd. Non-linear non-circular coiled spring
US7594831B2 (en) 2006-04-14 2009-09-29 Hon Hai Precision Industry Co., Ltd. Conductive contact
JP2014100949A (en) * 2012-11-16 2014-06-05 Nhk Spring Co Ltd Suspension system and helical compression spring for the same
JP2017100722A (en) * 2017-01-25 2017-06-08 日本発條株式会社 Suspension device, and compression coil spring for suspension device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699245A1 (en) * 1992-12-15 1994-06-17 Renault Helical suspension spring for vehicles with variable flexibility - includes central part having bi-conic configuration which extends from median zone and whose one spiral embeds itself inside larger dia. spiral under heavy load
US6193225B1 (en) * 1997-11-27 2001-02-27 Tama Spring Co., Ltd. Non-linear non-circular coiled spring
US7594831B2 (en) 2006-04-14 2009-09-29 Hon Hai Precision Industry Co., Ltd. Conductive contact
JP2014100949A (en) * 2012-11-16 2014-06-05 Nhk Spring Co Ltd Suspension system and helical compression spring for the same
JP2017100722A (en) * 2017-01-25 2017-06-08 日本発條株式会社 Suspension device, and compression coil spring for suspension device

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