WO2020040288A1 - Suspension coil spring device and method for manufacturing suspension coil spring device - Google Patents

Suspension coil spring device and method for manufacturing suspension coil spring device Download PDF

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Publication number
WO2020040288A1
WO2020040288A1 PCT/JP2019/033032 JP2019033032W WO2020040288A1 WO 2020040288 A1 WO2020040288 A1 WO 2020040288A1 JP 2019033032 W JP2019033032 W JP 2019033032W WO 2020040288 A1 WO2020040288 A1 WO 2020040288A1
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Prior art keywords
coil spring
compression coil
cyanoacrylate
spring device
rubber
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PCT/JP2019/033032
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French (fr)
Japanese (ja)
Inventor
優一 柴田
泰亮 諏訪
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日本発條株式会社
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Publication of WO2020040288A1 publication Critical patent/WO2020040288A1/en

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    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
    • B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle

Definitions

  • the present invention relates to a suspension coil spring device used for a suspension mechanism of a vehicle such as an automobile, and a method of manufacturing the suspension coil spring device.
  • This application claims priority based on Japanese Patent Application No. 2018-157585 for which it applied to Japan on August 24, 2018, and uses the content here.
  • a suspension coil spring device including a compression coil spring is used for a suspension mechanism of a vehicle such as an automobile. If a stepping stone or the like collides with the compression coil spring while the automobile is running, the compression coil spring may be broken. For this reason, the surface of the compression coil spring is protected by the coating film.
  • the compression coil spring is held by a spring seat that absorbs vibration. Foreign matter such as sand may be interposed between the compression coil spring and the spring seat.
  • a coating film is formed on the surface of the compression coil spring, but when the compression coil spring expands and contracts with hard foreign matter such as sand sandwiched between the compression coil spring and the spring seat, the coating film peels off and rust In some cases, the surface of the compression coil spring may be damaged due to the generated or caught foreign matter. Rust is formed on the scratch, and when the rust increases, the compression coil spring may be broken.
  • Patent Literature 1 proposes a suspension coil spring device in which a vibration isolating rubber is attached to a compression coil spring for the purpose of protecting the space between the compression coil spring and the spring seat.
  • the compression coil spring and the vibration isolation rubber are joined by an adhesive.
  • an object of the present invention is to provide a suspension coil spring device having an excellent adhesive force and an adhesive layer capable of suppressing deterioration of a coating film and a vibration-proof rubber, and having excellent productivity, and a method of manufacturing the suspension coil spring device.
  • one embodiment of the present invention has the following structure.
  • a compression coil spring having a coating film, an anti-vibration rubber, and an adhesive layer for joining the compression coil spring and the anti-vibration rubber are provided, and the adhesive layer is a cured product of a cyanoacrylate adhesive.
  • Suspension coil spring device is provided.
  • the adhesive force is excellent, the adhesive layer capable of suppressing the deterioration of the coating film and the vibration-proof rubber is provided, and the productivity is excellent.
  • FIG. 2 is a sectional view taken along line II-II shown in FIG. 1.
  • the suspension coil spring device of the present invention includes a compression coil spring, a vibration isolating rubber, and an adhesive layer.
  • An embodiment of a suspension coil spring device of the present invention will be described below in detail with reference to the drawings.
  • the suspension coil spring device 1 of the present embodiment includes a compression coil spring 10 and an anti-vibration rubber 20.
  • the compression coil spring 10 is formed in a spiral shape, and includes a first terminal portion 10a and a second terminal portion 10b.
  • the first terminal portion 10 a and the vibration-proof rubber 20 are joined via an adhesive layer 30.
  • the second terminal portion 10b may be housed in a spring holding member (not shown).
  • the suspension coil spring device 1 can be used, in particular, in a suspension mechanism of a motor vehicle, in which case it cooperates with a damper to dampen or dampen the vertical movement of the vehicle.
  • a coating film 14 is formed on the compression coil spring 10 so as to protect the element wire (wire) 12 from impact of stepping stones and corrosion.
  • the coating film 14 of the first terminal portion 10 a and the vibration-proof rubber 20 are joined via an adhesive layer 30.
  • the compression coil spring 10 includes a wire 12 and a coating film 14 on the surface of the wire 12.
  • the strand 12 has a circular cross section.
  • Examples of the material of the strand 12 include spring steel, hardened spring steel, and fiber-reinforced plastic.
  • Examples of the material of the coating film 14 include an epoxy resin.
  • the anti-vibration rubber 20 is formed in a region including the lower end of the first terminal portion 10 a of the compression coil spring 10.
  • the anti-vibration rubber 20 is formed so as to rise along the outer side surface of the compression coil spring 10.
  • the anti-vibration rubber 20 is made of a material having rubber elasticity. Examples of the material of the vibration isolation rubber 20 include natural rubber, butadiene rubber, styrene butadiene rubber, isoprene rubber, chloroprene rubber, nitrile rubber, urethane rubber, and the like.
  • the adhesive layer 30 joins the compression coil spring 10 and the vibration isolating rubber 20.
  • the adhesive layer 30 is located between the compression coil spring 10 and the vibration isolating rubber 20.
  • the adhesive layer 30 is a cured product of a cyanoacrylate adhesive.
  • a cured product refers to a product obtained by crosslinking an initial condensate of a moisture-curable resin with water or the like to become insoluble and infusible.
  • the components of the cyanoacrylate adhesive include methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, propyl-2-cyanoacrylate, isopropyl-2-cyanoacrylate, n-butyl-2-cyanoacrylate, isobutyl-2.
  • -Cyanoacrylate n-pentyl-2-cyanoacrylate, n-hexyl-2-cyanoacrylate, cyclohexyl-2-cyanoacrylate, n-octyl-2-cyanoacrylate, 2-ethylhexyl-2-cyanoacrylate, benzyl-2 -Cyanoacrylate, n-butyl-2-cyanoacrylate, methoxyethyl-2-cyanoacrylate, methoxypropyl-2-cyanoacrylate, ethoxyethyl-2-cyanoacrylate and the like.
  • One of these components may be used alone, or two or more thereof may be used in combination.
  • methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, and isopropyl-2-cyanoacrylate are preferable, and methyl-2-cyanoacrylate is more preferable, from the viewpoint of low viscosity and excellent adhesion.
  • the viscosity of the cyanoacrylate adhesive is preferably from 1 to 1500 mPa ⁇ s, more preferably from 100 to 1500 mPa ⁇ s, and still more preferably from 300 to 1000 mPa ⁇ s.
  • the viscosity of the cyanoacrylate adhesive is not less than the lower limit, the adhesive is easily applied to the compression coil spring 10 or the vibration-proof rubber 20.
  • the viscosity of the cyanoacrylate adhesive is not more than the above upper limit, the adhesive is easy to handle.
  • the viscosity of the cyanoacrylate adhesive is a value measured according to JIS K6861.
  • the thickness of the adhesive layer 30 is preferably 5 to 3000 ⁇ m, more preferably 5 to 1000 ⁇ m. When the thickness of the adhesive layer 30 is equal to or larger than the above lower limit, the compression coil spring 10 and the vibration-proof rubber 20 are easily bonded sufficiently. When the thickness of the adhesive layer 30 is equal to or less than the upper limit, the strength of the adhesive layer 30 is easily improved.
  • the adhesive layer 30 preferably does not have tackiness.
  • Tackiness refers to stickiness that occurs on the surface of a substance. If the adhesive layer 30 does not have tackiness, it is easy to suppress adhesion of foreign substances such as sand.
  • the tackiness can be evaluated by, for example, attaching an adhesive tape to the surface of the adhesive layer 30 and measuring a force when the adhesive tape is peeled off.
  • the cyanoacrylate adhesive is preferably used in combination with a curing accelerator.
  • a curing accelerator 2-amino-1-methylbenzene (o-toluidine), 3-amino-1-methylbenzene (m-toluidine), 4-amino-1-methylbenzene (p-toluidine), acetone, Cyclopentane, ethanol and the like.
  • the curing accelerator one type may be used alone, or two or more types may be used in combination.
  • the method of manufacturing the suspension coil spring device 1 of the present invention includes a step of forming the coating film 14 on the strand 12 and a step of joining the compression coil spring 10 and the vibration-proof rubber 20.
  • a step of forming the coating film 14 on the strand 12 a step of subjecting the strand 12 to zinc phosphate treatment, applying a coating material to be the material of the coating layer 14, and drying (single coating) is exemplified.
  • double coating can also be used as a process of forming the coating film 14 on the strand 12. Double coating is a process in which a thin base layer (base coat) is deposited on a zinc phosphate layer, and then an outer layer (top coat) thicker than the base layer.
  • the coating material include an epoxy powder coating.
  • the compression coil spring 10 having the coating 12 formed on the surface of the strand 12 is obtained.
  • a depression is provided in the vibration isolating rubber 20, and a cyanoacrylate adhesive and a curing accelerator are applied or poured into the depression, if necessary.
  • the adhesive cures at room temperature (1 to 30 ° C.), so that the coating film 14 and the vibration isolating rubber 20 on the surface of the compression coil spring 10 are not deteriorated, And the vibration-proof rubber 20 can be joined.
  • the manufacturing method of the suspension coil spring device 1 of the present invention includes a step of providing a depression in the vibration isolating rubber 20, applying a curing accelerator to the depression, and then pouring a cyanoacrylate-based adhesive into the depression and curing. It is preferred to have. If a curing accelerator is applied in advance to the depressions of the vibration-isolating rubber 20, when the cyanoacrylate-based adhesive is cured, the compression coil spring 10 and the vibration-isolating rubber 20 can be more powerfully and cleanly in a shorter time. Easy to join.
  • the time required for the step of joining the compression coil spring 10 and the vibration isolating rubber 20 is preferably 15 seconds or less. When the time required for the step of joining the compression coil spring 10 and the vibration isolation rubber 20 is equal to or less than the above upper limit, the productivity of the suspension coil spring device 1 is easily improved.
  • the time required for the step of joining the compression coil spring 10 and the vibration isolating rubber 20 is preferably, for example, 5 seconds or more from the viewpoint of curing the cyanoacrylate adhesive.
  • the suspension coil spring device 1 in which the adhesive layer 30 is located between the compression coil spring 10 and the vibration isolating rubber 20 is obtained by the step of joining the compression coil spring 10 and the vibration isolating rubber 20.
  • the adhesive layer 30 is a cured product of a cyanoacrylate adhesive
  • the adhesive force between the compression coil spring 10 and the vibration-proof rubber 20 is reduced. Can be enhanced.
  • the cyanoacrylate adhesive is used, the compression coil spring 10 and the vibration-proof rubber 20 can be joined in a short time.
  • the cyanoacrylate-based adhesive cures at room temperature, the compression coil spring 10 and the vibration-proof rubber 20 can be joined without deteriorating the coating film 14 and the vibration-proof rubber 20.
  • the cyanoacrylate-based adhesive does not contain a solvent, generation of bubbles is suppressed, and the compression coil spring 10 and the vibration-proof rubber 20 can be more firmly joined.
  • the compression coil spring 10 is a cylindrical coil spring.
  • Various types of compression coil springs may be used.
  • the specific shape and dimensions of the wires of the compression coil spring, the number of turns, the material, and the spring constant, as well as the wires constituting the compression coil spring and the shape and The dimensions, arrangement, etc. may be changed in various ways. Further, the present invention can be applied to a suspension mechanism of a vehicle other than an automobile.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

This suspension coil spring device (1) is provided with a compression coil spring (10) having a coating film; an anti-vibration rubber (20); and an adhesive layer for joining the compression coil spring (10) and the anti-vibration rubber (20), wherein the adhesive layer is a cured product of a cyanoacrylate-based adhesive.

Description

懸架用コイルばね装置及び懸架用コイルばね装置の製造方法Suspension coil spring device and method of manufacturing suspension coil spring device
　本発明は、自動車等の車両の懸架機構に使用される懸架用コイルばね装置及び懸架用コイルばね装置の製造方法に関する。
　本願は、２０１８年８月２４日に日本に出願された特願２０１８－１５７５８５号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a suspension coil spring device used for a suspension mechanism of a vehicle such as an automobile, and a method of manufacturing the suspension coil spring device.
This application claims priority based on Japanese Patent Application No. 2018-157585 for which it applied to Japan on August 24, 2018, and uses the content here.
　自動車等の車両の懸架機構には、圧縮コイルばねを備える懸架用コイルばね装置が用いられる。自動車の走行中に飛び石等が圧縮コイルばねに衝突すると、圧縮コイルばねが折損する原因となる。このため、圧縮コイルばねの表面は、塗膜によって保護されている。 コ イ ル A suspension coil spring device including a compression coil spring is used for a suspension mechanism of a vehicle such as an automobile. If a stepping stone or the like collides with the compression coil spring while the automobile is running, the compression coil spring may be broken. For this reason, the surface of the compression coil spring is protected by the coating film.
　懸架用コイルばね装置において、圧縮コイルばねは、振動を吸収するばね座によって保持されている。圧縮コイルばねとばね座との間に、砂等の異物が挟まれることがある。圧縮コイルばねの表面には塗膜が形成されているが、圧縮コイルばねとばね座との間に砂等の硬い異物が挟まった状態で圧縮コイルばねが伸縮すると、塗膜が剥がれて錆が生じたり、挟まった異物によって圧縮コイルばねの表面が傷ついたりすることがある。この傷に錆が生じ、錆が大きくなると、圧縮コイルばねが折損する原因となる。 に お い て In the suspension coil spring device, the compression coil spring is held by a spring seat that absorbs vibration. Foreign matter such as sand may be interposed between the compression coil spring and the spring seat. A coating film is formed on the surface of the compression coil spring, but when the compression coil spring expands and contracts with hard foreign matter such as sand sandwiched between the compression coil spring and the spring seat, the coating film peels off and rust In some cases, the surface of the compression coil spring may be damaged due to the generated or caught foreign matter. Rust is formed on the scratch, and when the rust increases, the compression coil spring may be broken.
　圧縮コイルばねとばね座との間を保護することを目的に、特許文献１には、圧縮コイルばねに防振ゴムを取り付けた懸架用コイルばね装置が提案されている。特許文献１の懸架用コイルばね装置では、圧縮コイルばねと防振ゴムとは、接着剤によって接合されている。 Patent Literature 1 proposes a suspension coil spring device in which a vibration isolating rubber is attached to a compression coil spring for the purpose of protecting the space between the compression coil spring and the spring seat. In the suspension coil spring device of Patent Literature 1, the compression coil spring and the vibration isolation rubber are joined by an adhesive.
日本国特開２０１５－１９０５３８号公報Japanese Patent Application Laid-Open No. 2015-190538
　しかしながら、圧縮コイルばねと防振ゴムとを接合する力（接着力）が弱いと、圧縮コイルばねと防振ゴムとの間に砂等の異物が入り込む場合がある。
　懸架用コイルばね装置の製造にあたっては、圧縮コイルばねと防振ゴムとを短時間で接合し、生産性を高めることが求められている。
　加えて、圧縮コイルばねの表面の塗膜及び防振ゴムを劣化させることなく、圧縮コイルばねと防振ゴムとを接合することが求められている。 However, if the force (adhesion) between the compression coil spring and the vibration isolating rubber is weak, foreign matter such as sand may enter between the compression coil spring and the vibration isolating rubber.
In manufacturing the suspension coil spring device, it is required to join the compression coil spring and the vibration isolating rubber in a short time to increase productivity.
In addition, there is a demand for joining the compression coil spring and the vibration isolating rubber without deteriorating the coating film and the vibration isolating rubber on the surface of the compression coil spring.
　そこで、本発明は、接着力に優れ、塗膜及び防振ゴムの劣化を抑制できる接着層を備え、生産性に優れる懸架用コイルばね装置及び懸架用コイルばね装置の製造方法を目的とする。 Accordingly, an object of the present invention is to provide a suspension coil spring device having an excellent adhesive force and an adhesive layer capable of suppressing deterioration of a coating film and a vibration-proof rubber, and having excellent productivity, and a method of manufacturing the suspension coil spring device.
　鋭意検討を重ねた結果、本発明者等は、懸架用コイルばね装置の圧縮コイルばねと防振ゴムとを接合する接着剤として、シアノアクリレート系接着剤（いわゆる瞬間接着剤）を用いることで、上記課題を解決できることを見出した。
　すなわち、本発明の一態様は、以下の構成を有する。
［１］塗膜を有する圧縮コイルばねと、防振ゴムと、前記圧縮コイルばねと前記防振ゴムとを接合する接着層とを備え、前記接着層がシアノアクリレート系接着剤の硬化物である、懸架用コイルばね装置。
［２］前記接着層は、硬化促進剤をさらに有する、前記［１］に記載の懸架用コイルばね装置。
［３］前記［１］又は［２］に記載の懸架用コイルばね装置の製造方法であって、前記防振ゴムに窪みを設け、前記窪みに硬化促進剤を塗布し、その後に前記シアノアクリレート系接着剤を前記窪みに流し込み、硬化させる工程を有する、懸架用コイルばね装置の製造方法。 As a result of intensive studies, the present inventors have found that by using a cyanoacrylate-based adhesive (so-called instantaneous adhesive) as an adhesive for joining the compression coil spring of the suspension coil spring device and the vibration isolating rubber, It has been found that the above problem can be solved.
That is, one embodiment of the present invention has the following structure.
[1] A compression coil spring having a coating film, an anti-vibration rubber, and an adhesive layer for joining the compression coil spring and the anti-vibration rubber are provided, and the adhesive layer is a cured product of a cyanoacrylate adhesive. , Suspension coil spring device.
[2] The suspension coil spring device according to [1], wherein the adhesive layer further includes a curing accelerator.
[3] The method of manufacturing a suspension coil spring device according to [1] or [2], wherein a depression is provided in the vibration-proof rubber, a curing accelerator is applied to the depression, and then the cyanoacrylate A method of manufacturing a suspension coil spring device, comprising a step of pouring a system adhesive into the depression and curing the adhesive.
　本発明の懸架用コイルばね装置及び懸架用コイルばね装置の製造方法によれば、接着力に優れ、塗膜及び防振ゴムの劣化を抑制できる接着層を備え、生産性に優れる。 According to the suspension coil spring device and the method of manufacturing the suspension coil spring device of the present invention, the adhesive force is excellent, the adhesive layer capable of suppressing the deterioration of the coating film and the vibration-proof rubber is provided, and the productivity is excellent.
本発明の懸架用コイルばね装置の一実施形態を示す斜視図である。It is a perspective view showing one embodiment of a coil spring device for suspension of the present invention. 図１に示すＩＩ－ＩＩ線断面図である。FIG. 2 is a sectional view taken along line II-II shown in FIG. 1.
＜懸架用コイルばね装置＞
　本発明の懸架用コイルばね装置は、圧縮コイルばねと、防振ゴムと、接着層とを備える。
　本発明の懸架用コイルばね装置の一実施形態について、以下に、図面を用いて詳細に説明する。
　図１に示すように、本実施形態の懸架用コイルばね装置１は、圧縮コイルばね１０と、防振ゴム２０とを備える。圧縮コイルばね１０は、螺旋形に成形されており、第一の端末部分１０ａと、第二の端末部分１０ｂとを備える。 <Coil spring device for suspension>
The suspension coil spring device of the present invention includes a compression coil spring, a vibration isolating rubber, and an adhesive layer.
An embodiment of a suspension coil spring device of the present invention will be described below in detail with reference to the drawings.
As shown in FIG. 1, the suspension coil spring device 1 of the present embodiment includes a compression coil spring 10 and an anti-vibration rubber 20. The compression coil spring 10 is formed in a spiral shape, and includes a first terminal portion 10a and a second terminal portion 10b.
　図２に示すように、第一の端末部分１０ａと、防振ゴム２０とは、接着層３０を介して接合している。第二の端末部分１０ｂは、ばね保持部材（不図示）内に収容され得る。懸架用コイルばね装置１は、特に自動車の懸架機構において使用可能であり、この場合、ダンパと協働して車両の鉛直方向運動を緩衝あるいは減衰する。
　圧縮コイルばね１０には、素線（ワイヤ）１２を飛び石の衝突や腐食から保護する塗膜１４が形成されている。第一の端末部分１０ａの塗膜１４と、防振ゴム２０とは、接着層３０を介して接合している。 As shown in FIG. 2, the first terminal portion 10 a and the vibration-proof rubber 20 are joined via an adhesive layer 30. The second terminal portion 10b may be housed in a spring holding member (not shown). The suspension coil spring device 1 can be used, in particular, in a suspension mechanism of a motor vehicle, in which case it cooperates with a damper to dampen or dampen the vertical movement of the vehicle.
A coating film 14 is formed on the compression coil spring 10 so as to protect the element wire (wire) 12 from impact of stepping stones and corrosion. The coating film 14 of the first terminal portion 10 a and the vibration-proof rubber 20 are joined via an adhesive layer 30.
［圧縮コイルばね］
　圧縮コイルばね１０は、素線１２と、素線１２の表面の塗膜１４とを備える。
　素線１２は、断面が円形である。素線１２の素材としては、ばね鋼や、硬化処理されたばね鋼、繊維強化されたプラスチック等が挙げられる。
　塗膜１４の素材としては、エポキシ系樹脂等が挙げられる。 [Compression coil spring]
The compression coil spring 10 includes a wire 12 and a coating film 14 on the surface of the wire 12.
The strand 12 has a circular cross section. Examples of the material of the strand 12 include spring steel, hardened spring steel, and fiber-reinforced plastic.
Examples of the material of the coating film 14 include an epoxy resin.
［防振ゴム］
　防振ゴム２０は、圧縮コイルばね１０の第一の端末部分１０ａの下端を含む領域に形成されている。防振ゴム２０は、圧縮コイルばね１０の外方の側面に沿って立ち上がるように形成されている。
　防振ゴム２０は、ゴム弾性を有する材料からなる。防振ゴム２０の材料としては、天然ゴム、ブタジエンゴム、スチレンブタジエンゴム、イソプレンゴム、クロロプレンゴム、ニトリルゴム、ウレタンゴム等が挙げられる。 [Vibration isolation rubber]
The anti-vibration rubber 20 is formed in a region including the lower end of the first terminal portion 10 a of the compression coil spring 10. The anti-vibration rubber 20 is formed so as to rise along the outer side surface of the compression coil spring 10.
The anti-vibration rubber 20 is made of a material having rubber elasticity. Examples of the material of the vibration isolation rubber 20 include natural rubber, butadiene rubber, styrene butadiene rubber, isoprene rubber, chloroprene rubber, nitrile rubber, urethane rubber, and the like.
［接着層］
　接着層３０は、圧縮コイルばね１０と防振ゴム２０とを接合する。接着層３０は、圧縮コイルばね１０と防振ゴム２０との間に位置する。
　接着層３０は、シアノアクリレート系接着剤の硬化物である。本明細書において、硬化物とは、湿気硬化性樹脂の初期縮合物が水分等によって架橋して不溶不融となったものをいう。 [Adhesive layer]
The adhesive layer 30 joins the compression coil spring 10 and the vibration isolating rubber 20. The adhesive layer 30 is located between the compression coil spring 10 and the vibration isolating rubber 20.
The adhesive layer 30 is a cured product of a cyanoacrylate adhesive. In the present specification, a cured product refers to a product obtained by crosslinking an initial condensate of a moisture-curable resin with water or the like to become insoluble and infusible.
　シアノアクリレート系接着剤の成分としては、メチル－２－シアノアクリレート、エチル－２－シアノアクリレート、プロピル－２－シアノアクリレート、イソプロピル－２－シアノアクリレート、ｎ－ブチル－２－シアノアクリレート、イソブチル－２－シアノアクリレート、ｎ－ペンチル－２－シアノアクリレート、ｎ－ヘキシル－２－シアノアクリレート、シクロヘキシル－２－シアノアクリレート、ｎ－オクチル－２－シアノアクリレート、２－エチルヘキシル－２－シアノアクリレート、ベンジル－２－シアノアクリレート、ｎ－ブチル－２－シアノアクリレート、メトキシエチル－２－シアノアクリレート、メトキシプロピル－２－シアノアクリレート、エトキシエチル－２－シアノアクリレート等が挙げられる。
　これらの成分は、１種を単独で用いてもよく、２種以上を併用してもよい。
　これらの成分のうち、粘度が低く、接着性に優れる観点から、メチル－２－シアノアクリレート、エチル－２－シアノアクリレート、イソプロピル－２－シアノアクリレートが好ましく、メチル－２－シアノアクリレートがより好ましい。 The components of the cyanoacrylate adhesive include methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, propyl-2-cyanoacrylate, isopropyl-2-cyanoacrylate, n-butyl-2-cyanoacrylate, isobutyl-2. -Cyanoacrylate, n-pentyl-2-cyanoacrylate, n-hexyl-2-cyanoacrylate, cyclohexyl-2-cyanoacrylate, n-octyl-2-cyanoacrylate, 2-ethylhexyl-2-cyanoacrylate, benzyl-2 -Cyanoacrylate, n-butyl-2-cyanoacrylate, methoxyethyl-2-cyanoacrylate, methoxypropyl-2-cyanoacrylate, ethoxyethyl-2-cyanoacrylate and the like.
One of these components may be used alone, or two or more thereof may be used in combination.
Among these components, methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, and isopropyl-2-cyanoacrylate are preferable, and methyl-2-cyanoacrylate is more preferable, from the viewpoint of low viscosity and excellent adhesion.
　シアノアクリレート系接着剤の粘度は、１～１５００ｍＰａ・ｓが好ましく、１００～１５００ｍＰａ・ｓがより好ましく、３００～１０００ｍＰａ・ｓがさらに好ましい。シアノアクリレート系接着剤の粘度が上記下限値以上であると、圧縮コイルばね１０又は防振ゴム２０に接着剤を塗布しやすい。シアノアクリレート系接着剤の粘度が上記上限値以下であると、接着剤を取り扱いやすい。
　本明細書において、シアノアクリレート系接着剤の粘度は、ＪＩＳ　Ｋ６８６１に準じて測定される値である。 The viscosity of the cyanoacrylate adhesive is preferably from 1 to 1500 mPa · s, more preferably from 100 to 1500 mPa · s, and still more preferably from 300 to 1000 mPa · s. When the viscosity of the cyanoacrylate adhesive is not less than the lower limit, the adhesive is easily applied to the compression coil spring 10 or the vibration-proof rubber 20. When the viscosity of the cyanoacrylate adhesive is not more than the above upper limit, the adhesive is easy to handle.
In this specification, the viscosity of the cyanoacrylate adhesive is a value measured according to JIS K6861.
　接着層３０の厚さは、５～３０００μｍが好ましく、５～１０００μｍがより好ましい。接着層３０の厚さが上記下限値以上であると、圧縮コイルばね１０と防振ゴム２０とが充分に接合しやすい。接着層３０の厚さが上記上限値以下であると、接着層３０の強度を向上しやすい。 は The thickness of the adhesive layer 30 is preferably 5 to 3000 μm, more preferably 5 to 1000 μm. When the thickness of the adhesive layer 30 is equal to or larger than the above lower limit, the compression coil spring 10 and the vibration-proof rubber 20 are easily bonded sufficiently. When the thickness of the adhesive layer 30 is equal to or less than the upper limit, the strength of the adhesive layer 30 is easily improved.
　接着層３０は、タック性を有しないことが好ましい。タック性とは、物質の表面に生じるべたつきのことをいう。接着層３０がタック性を有しないと、砂等の異物の付着を抑制しやすい。タック性は、例えば、接着層３０の表面に粘着テープを貼付し、粘着テープを剥がすときの力を計測することにより評価できる。 The adhesive layer 30 preferably does not have tackiness. Tackiness refers to stickiness that occurs on the surface of a substance. If the adhesive layer 30 does not have tackiness, it is easy to suppress adhesion of foreign substances such as sand. The tackiness can be evaluated by, for example, attaching an adhesive tape to the surface of the adhesive layer 30 and measuring a force when the adhesive tape is peeled off.
　シアノアクリレート系接着剤は、硬化促進剤と併用することが好ましい。シアノアクリレート系接着剤は、硬化促進剤と併用することで、圧縮コイルばね１０と防振ゴム２０とを、より短時間で強力に接合できる。
　硬化促進剤としては、２－アミノ－１－メチルベンゼン（ｏ－トルイジン）、３－アミノ－１－メチルベンゼン（ｍ－トルイジン）、４－アミノ－１－メチルベンゼン（ｐ－トルイジン）、アセトン、シクロペンタン、エタノール等が挙げられる。
　硬化促進剤は、１種を単独で用いてもよく、２種以上を併用してもよい。 The cyanoacrylate adhesive is preferably used in combination with a curing accelerator. By using the cyanoacrylate-based adhesive together with a curing accelerator, the compression coil spring 10 and the vibration-proof rubber 20 can be strongly bonded in a shorter time.
As curing accelerators, 2-amino-1-methylbenzene (o-toluidine), 3-amino-1-methylbenzene (m-toluidine), 4-amino-1-methylbenzene (p-toluidine), acetone, Cyclopentane, ethanol and the like.
As the curing accelerator, one type may be used alone, or two or more types may be used in combination.
＜懸架用コイルばね装置の製造方法＞
　本発明の懸架用コイルばね装置１の製造方法は、素線１２に塗膜１４を形成する工程と、圧縮コイルばね１０と防振ゴム２０とを接合する工程とを有する。
　素線１２に塗膜１４を形成する工程としては、素線１２をリン酸亜鉛処理し、次いで塗膜１４の材料となるコーティング材料を塗装し、乾燥する工程（シングルコーティング）が挙げられる。素線１２に塗膜１４を形成する工程としては、ダブルコーティングも使用可能である。ダブルコーティングは、リン酸亜鉛層上に薄い基層（ベースコート）を付着し、その後基層よりも厚い外層（トップコート）を付着する工程である。
　コーティング材料としては、エポキシ粉体塗料等が挙げられる。 <Production method of suspension coil spring device>
The method of manufacturing the suspension coil spring device 1 of the present invention includes a step of forming the coating film 14 on the strand 12 and a step of joining the compression coil spring 10 and the vibration-proof rubber 20.
As a step of forming the coating film 14 on the strand 12, a step of subjecting the strand 12 to zinc phosphate treatment, applying a coating material to be the material of the coating layer 14, and drying (single coating) is exemplified. As a process of forming the coating film 14 on the strand 12, double coating can also be used. Double coating is a process in which a thin base layer (base coat) is deposited on a zinc phosphate layer, and then an outer layer (top coat) thicker than the base layer.
Examples of the coating material include an epoxy powder coating.
　素線１２に塗膜１４を形成する工程により、素線１２の表面に塗膜１４が形成された圧縮コイルばね１０が得られる。 に よ り By the step of forming the coating film 14 on the strand 12, the compression coil spring 10 having the coating 12 formed on the surface of the strand 12 is obtained.
　圧縮コイルばね１０と防振ゴム２０とを接合する工程としては、防振ゴム２０に窪みを設け、シアノアクリレート系接着剤と必要に応じて硬化促進剤とを前記窪みに塗布又は流し込み、前記窪みに圧縮コイルばね１０をはめ込み、硬化させる工程が挙げられる。
　シアノアクリレート系接着剤を用いた場合、室温（１～３０℃）で接着剤が硬化するため、圧縮コイルばね１０の表面の塗膜１４及び防振ゴム２０を劣化させることなく、圧縮コイルばね１０と防振ゴム２０とを接合できる。 As a step of joining the compression coil spring 10 and the vibration isolating rubber 20, a depression is provided in the vibration isolating rubber 20, and a cyanoacrylate adhesive and a curing accelerator are applied or poured into the depression, if necessary. A step of fitting the compression coil spring 10 into the stiffener and hardening it.
When a cyanoacrylate-based adhesive is used, the adhesive cures at room temperature (1 to 30 ° C.), so that the coating film 14 and the vibration isolating rubber 20 on the surface of the compression coil spring 10 are not deteriorated, And the vibration-proof rubber 20 can be joined.
　本発明の懸架用コイルばね装置１の製造方法は、防振ゴム２０に窪みを設け、前記窪みに硬化促進剤を塗布し、その後にシアノアクリレート系接着剤を前記窪みに流し込み、硬化させる工程を有することが好ましい。
　防振ゴム２０の窪みに硬化促進剤をあらかじめ塗布しておくと、シアノアクリレート系接着剤を硬化させるときに、圧縮コイルばね１０と防振ゴム２０とをより短時間で強力に、かつ、綺麗に接合しやすい。 The manufacturing method of the suspension coil spring device 1 of the present invention includes a step of providing a depression in the vibration isolating rubber 20, applying a curing accelerator to the depression, and then pouring a cyanoacrylate-based adhesive into the depression and curing. It is preferred to have.
If a curing accelerator is applied in advance to the depressions of the vibration-isolating rubber 20, when the cyanoacrylate-based adhesive is cured, the compression coil spring 10 and the vibration-isolating rubber 20 can be more powerfully and cleanly in a shorter time. Easy to join.
　圧縮コイルばね１０と防振ゴム２０とを接合する工程に要する時間は、１５秒以下が好ましい。圧縮コイルばね１０と防振ゴム２０とを接合する工程に要する時間が上記上限値以下であると、懸架用コイルばね装置１の生産性を向上しやすい。圧縮コイルばね１０と防振ゴム２０とを接合する工程に要する時間は、シアノアクリレート系接着剤を硬化する観点から、例えば、５秒以上が好ましい。 時間 The time required for the step of joining the compression coil spring 10 and the vibration isolating rubber 20 is preferably 15 seconds or less. When the time required for the step of joining the compression coil spring 10 and the vibration isolation rubber 20 is equal to or less than the above upper limit, the productivity of the suspension coil spring device 1 is easily improved. The time required for the step of joining the compression coil spring 10 and the vibration isolating rubber 20 is preferably, for example, 5 seconds or more from the viewpoint of curing the cyanoacrylate adhesive.
　圧縮コイルばね１０と防振ゴム２０とを接合する工程により、圧縮コイルばね１０と防振ゴム２０との間に接着層３０が位置する懸架用コイルばね装置１が得られる。 に よ り The suspension coil spring device 1 in which the adhesive layer 30 is located between the compression coil spring 10 and the vibration isolating rubber 20 is obtained by the step of joining the compression coil spring 10 and the vibration isolating rubber 20.
　以上説明したように、本実施形態の懸架用コイルばね装置１によれば、接着層３０がシアノアクリレート系接着剤の硬化物であるため、圧縮コイルばね１０と防振ゴム２０との接着力を高めることができる。
　加えて、シアノアクリレート系接着剤を用いているため、圧縮コイルばね１０と防振ゴム２０とを短時間で接合することができる。
　さらに、シアノアクリレート系接着剤は、室温で硬化するため、塗膜１４及び防振ゴム２０を劣化させることなく、圧縮コイルばね１０と防振ゴム２０とを接合することができる。
　その上、シアノアクリレート系接着剤は、溶媒を含まないため、気泡の発生が抑制され、より強固に圧縮コイルばね１０と防振ゴム２０とを接合できる。 As described above, according to the suspension coil spring device 1 of the present embodiment, since the adhesive layer 30 is a cured product of a cyanoacrylate adhesive, the adhesive force between the compression coil spring 10 and the vibration-proof rubber 20 is reduced. Can be enhanced.
In addition, since the cyanoacrylate adhesive is used, the compression coil spring 10 and the vibration-proof rubber 20 can be joined in a short time.
Furthermore, since the cyanoacrylate-based adhesive cures at room temperature, the compression coil spring 10 and the vibration-proof rubber 20 can be joined without deteriorating the coating film 14 and the vibration-proof rubber 20.
In addition, since the cyanoacrylate-based adhesive does not contain a solvent, generation of bubbles is suppressed, and the compression coil spring 10 and the vibration-proof rubber 20 can be more firmly joined.
　なお、本発明の技術的範囲は前記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention.
　例えば、前記実施形態では、圧縮コイルばね１０は、円筒コイルばねであるが、車両の仕様に応じて、たる型コイルばね、鼓型コイルばね、テーパコイルばね、不等ピッチコイルばね、その他のばね等、種々の形態の圧縮コイルばねであってもよい。 For example, in the above-described embodiment, the compression coil spring 10 is a cylindrical coil spring. Various types of compression coil springs may be used.
　なお、本発明を実施するに当たって、圧縮コイルばねの素線の具体的な形状や寸法、巻き数、材料、ばね定数をはじめとして、圧縮コイルばねを構成する素線や、防振ゴムの形状や寸法、配置等を種々に変更して実施してもよい。
　また、本発明は、自動車以外の車両の懸架機構に適用することもできる。 In practicing the present invention, the specific shape and dimensions of the wires of the compression coil spring, the number of turns, the material, and the spring constant, as well as the wires constituting the compression coil spring and the shape and The dimensions, arrangement, etc. may be changed in various ways.
Further, the present invention can be applied to a suspension mechanism of a vehicle other than an automobile.
　その他、本発明の趣旨を逸脱しない範囲で、前記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。 In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the spirit of the present invention, and the above-described modifications may be appropriately combined.
１　懸架用コイルばね装置
１０　圧縮コイルばね
１０ａ　第一の端末部分
１０ｂ　第二の端末部分
１２　素線
１４　塗膜
２０　防振ゴム
３０　接着層 DESCRIPTION OF SYMBOLS 1 Suspension coil spring device 10 Compression coil spring 10a First terminal portion 10b Second terminal portion 12 Element wire 14 Coating film 20 Anti-vibration rubber 30 Adhesive layer

Claims (3)

  1. 　塗膜を有する圧縮コイルばねと、防振ゴムと、前記圧縮コイルばねと前記防振ゴムとを接合する接着層とを備え、
    　前記接着層がシアノアクリレート系接着剤の硬化物である、懸架用コイルばね装置。     A compression coil spring having a coating film, an anti-vibration rubber, and an adhesive layer that joins the compression coil spring and the anti-vibration rubber,
    The suspension coil spring device, wherein the adhesive layer is a cured product of a cyanoacrylate adhesive.
  2. 　前記接着層は、硬化促進剤をさらに有する、請求項１に記載の懸架用コイルばね装置。 The suspension coil spring device according to claim 1, wherein the adhesive layer further has a curing accelerator.
  3. 　請求項１又は２に記載の懸架用コイルばね装置の製造方法であって、
    　前記防振ゴムに窪みを設け、前記窪みに硬化促進剤を塗布し、その後に前記シアノアクリレート系接着剤を前記窪みに流し込み、硬化させる工程を有する、懸架用コイルばね装置の製造方法。     It is a manufacturing method of the suspension coil spring device of Claim 1 or 2, Comprising:
    A method for manufacturing a suspension coil spring device, comprising: providing a depression in the vibration-proof rubber, applying a curing accelerator to the depression, and then pouring the cyanoacrylate-based adhesive into the depression and curing.
PCT/JP2019/033032 2018-08-24 2019-08-23 Suspension coil spring device and method for manufacturing suspension coil spring device WO2020040288A1 (en)

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Citations (8)

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JPH03207779A (en) * 1990-01-08 1991-09-11 Toagosei Chem Ind Co Ltd Curing accelerator composition for instantaneous adhesive
JP2007205524A (en) * 2006-02-03 2007-08-16 Toyo Tire & Rubber Co Ltd Vibration control device
JP2009235115A (en) * 2008-03-25 2009-10-15 Taoka Chem Co Ltd Curing accelerator for 2-cyanoacrylate-based adhesive
JP2009264486A (en) * 2008-04-25 2009-11-12 Honda Motor Co Ltd Spring
JP3179684U (en) * 2012-08-21 2012-11-15 正夫 菅 Squat exercise equipment
US20140225319A1 (en) * 2011-04-14 2014-08-14 ThyssenKrupp Federn und Stabilisatoren GmbH Bearing arrangement for a spring of a vehicle chassis
JP2015190538A (en) * 2014-03-28 2015-11-02 日本発條株式会社 suspension coil spring
JP2017015249A (en) * 2015-05-15 2017-01-19 ムール ウント ベンダー コマンディートゲゼルシャフトＭｕｈｒ ｕｎｄ Ｂｅｎｄｅｒ ＫＧ Spring device and method for manufacturing the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03207779A (en) * 1990-01-08 1991-09-11 Toagosei Chem Ind Co Ltd Curing accelerator composition for instantaneous adhesive
JP2007205524A (en) * 2006-02-03 2007-08-16 Toyo Tire & Rubber Co Ltd Vibration control device
JP2009235115A (en) * 2008-03-25 2009-10-15 Taoka Chem Co Ltd Curing accelerator for 2-cyanoacrylate-based adhesive
JP2009264486A (en) * 2008-04-25 2009-11-12 Honda Motor Co Ltd Spring
US20140225319A1 (en) * 2011-04-14 2014-08-14 ThyssenKrupp Federn und Stabilisatoren GmbH Bearing arrangement for a spring of a vehicle chassis
JP3179684U (en) * 2012-08-21 2012-11-15 正夫 菅 Squat exercise equipment
JP2015190538A (en) * 2014-03-28 2015-11-02 日本発條株式会社 suspension coil spring
JP2017015249A (en) * 2015-05-15 2017-01-19 ムール ウント ベンダー コマンディートゲゼルシャフトＭｕｈｒ ｕｎｄ Ｂｅｎｄｅｒ ＫＧ Spring device and method for manufacturing the same

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