JP3857463B2 - Coil spring for automobile suspension system - Google Patents

Coil spring for automobile suspension system Download PDF

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Publication number
JP3857463B2
JP3857463B2 JP10181199A JP10181199A JP3857463B2 JP 3857463 B2 JP3857463 B2 JP 3857463B2 JP 10181199 A JP10181199 A JP 10181199A JP 10181199 A JP10181199 A JP 10181199A JP 3857463 B2 JP3857463 B2 JP 3857463B2
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Japan
Prior art keywords
coil spring
spring
cutting
height
suspension device
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Expired - Fee Related
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JP10181199A
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Japanese (ja)
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JP2000291706A (en
Inventor
秀二 上野
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株式会社 レッドゾーン
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40Constructional features of dampers and/or springs
    • B60G2206/42Springs
    • B60G2206/426Coil springs having a particular shape, e.g. curved axis, pig-tail end coils

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  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)
  • Fluid-Damping Devices (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、自動車の懸架装置用コイルばねに関するものである。更に詳しくは、高さを調整するためにコイルばねの端部を切断しても切断部をばね座に収めることができ、高さについては微調整が可能で汎用的に使用できるようにしたものに関する。
【0002】
【従来技術】
自動車の前輪及び後輪の懸架部には、通常、緩衝手段として油圧式のショックアブソーバと共に、図5に示すようなコイルばねが採用されている。コイルばねは、ショックアブソーバの上下に設けてあるばね座の間に、両端部をばね座に収めて取り付けられている。コイルばねは、走行時に路面から伝わるショックを吸収するとともに、車高を決める要素ともなっている。
【0003】
ところで、近年においては、自動車をドレスアップしてファッション性を高める風潮が強くなってきている。車高を低くして、タイヤとフェンダーの隙間が狭くなるようにするのもその方法の一つである。
車高を低くするには、コイルばねを、純正のものではないけれども法律による規制値(車高:90mm以上)に収まる範囲の低いものや巻き数が多く(ピッチが狭く)反発力が弱いものに交換する方法が採られていた。
【0004】
なお、コイルばねの上下端部は、上記したようにショックアブソーバの上下に設けられたばね座に収められるので、ばね座の形状とばね座に収まるコイルばねの端部形状とは密接な関係にあり、コイルばねの端部形状が所定の形状でないとコイルばねの端部をばね座に収めることはできない。
【0005】
【発明が解決しようとする課題】
けれども、上記したような従来の自動車の懸架装置用コイルばねには、次のような課題があった。
すなわち、上記したように、ばね座の形状に合うコイルばねの上下端部の形状は決まっているので、例えば単純に一端側を切断して低くすると、端部形状が変わってしまうので、ばね座に収まらなくなり、装着できなくなる。
従って、コイルばねの高さを低くして車高を調整するという客のニーズにきめ細かく対応するには、ばね座に収まる端部形状を有し高さの異なる多くの種類のコイルばねを予め用意しておく必要があった。
【0006】
しかし、自動車の種類は多種多様であり、ばね座の形状や大きさもまた様々である。このため、上記のように高さの異なる多くの種類を用意し、更に上下端部形状の異なるものを組み合わせることは、コイルばねの種類が多くなりすぎるために、実際的ではない。このため、一部汎用的に使用でき、予め用意する種類を減らすことができる懸架用コイルばねの提案が望まれていた。
【0007】
(目的)
本発明は上記課題を解消するもので、高さを調整するためにコイルばねの端部を切断しても切断部をばね座に収めることができるようにして、高さについては微調整が可能で汎用的に使用でき、車高を低く調整するという客のニーズに、より少ない種類のコイルばねで細かく対応できるようにした自動車の懸架装置用コイルばねを提供することを目的とする。
【0008】
【課題を解決するための手段】
上記目的を達成するために講じた本発明の手段は次のとおりである。
即ち本発明は、
自動車の懸架装置用コイルばねであって、
上端部と下端部の何れか一方または双方に、素線を密接させて複数回巻くことにより切断調整部が設けてあり、切断調整部を適宜切断することにより車の高さを低く調整できるとともにばね座に当接する端部が、切断前及び切断後においても、ばね座に収まる形状となるように形成してある
自動車の懸架装置用コイルばねである。
【0010】
切断調整部の素線のピッチは、素線間に隙間のないピッチである。
また、切断調整部の直径は特に限定するものではなく、ばね座の形状や大きさに合わせて適宜設定されるものである。
【0011】
コイルばねの切断前の高さは、純正のばねより低い場合もあるし高い場合もある。また、同一の高さになる場合もある。これは、純正のものとばね硬さが同じである場合はばねを低くしないと車高が落ちないが、巻き数を増やしたりばね径を大きくして純正のものよりばね硬さを柔らかくした場合は、高さが同じか高くても車高を落とすことが可能になるからである。
【0012】
コイルばねの種類としては、切断調整部を除く部分の全長にわたり同じピッチである等ピッチばね、ピッチが異なる不等ピッチばねがある。また、全長にわたり同径のばねの他、一端側が次第に径大となった円錐型ばね、中間部が括れている鼓型ばね、中間部が膨らんでいる樽型ばね等もある。更には、例えば一端側から他端側へかけて途中まで同径で残りの他端側が窄まっているというような、上記各特徴を組み合わせたばねを採用することもできる。
【0013】
コイルばねの端部の素線形状としては、素線のピッチをそのままにした形状のオープンエンド、オープンエンドの一種で素線の端部が接線方向を向いたタンジェントテールエンド、同じく素線の端部が極端に径小となったビッグテールエンド、素線を変形させてピッチを変えた形状のクローズドエンドがある。
更に、オープンエンドとクローズドエンドのそれぞれには、端末面部の素線を切断したままのもの(無研削)と、端末面部を一部平面状に研削したもの(テーパ)がある。
【0014】
(作用)
本発明に係る自動車の懸架装置用コイルばねは次のように作用する。
懸架装置用コイルばねは、ばね座に収められる端部の形状も純正のものと同じようにばね座に収めることができる形状である。
車高を低くするためにコイルばねを低くするときには、コイルばねの上端部と下端部の何れか一方または双方に設けてある切断調整部の素線を適当な位置で切断すればよい。なお、コイルばねの高さの調整にあたっては、素線を密接させて複数回巻くことにより形成された切断調整部の範囲内で素線を切断するので、切断側の端部形状は、切断前と本質的に変わることがなく、ばね座に支障なく収めることができる。
【0015】
これにより、コイルばねの高さを例えばmm単位で微調整することが可能となるので、コイルばねを汎用的に使用でき、車高を低く調整するという客のニーズに、より少ない種類のコイルばねで細かく対応できる。
また、切断調整部の巻き数を増やすことによって切断調整部の高さを高くしておけば、車高の調整可能な範囲が広くなり、客のニーズにより細かく対応できる。
【0016】
【発明の実施の形態】
本発明の実施の形態を図面に基づき更に詳細に説明する。
図1は本発明に係る自動車の懸架装置用コイルばねの一実施の形態を示す正面図である。
懸架装置用コイルばねS1は、ばね鋼製の素線1を螺旋状に巻回してつくられている。懸架装置用コイルばねS1の下端部は、やや径小となったクローズドエンドとなっている。
【0017】
懸架装置用コイルばねS1の上端部には、素線を同径及び同ピッチで複数回巻いてある切断調整部2が設けてある。切断調整部2の素線1のピッチは、素線1間に隙間のないピッチに設定してある。なお、懸架装置用コイルばねS1のうち、切断調整部2を除く部分は等ピッチである。
【0018】
また、懸架装置用コイルばねS1は、製造工場出荷時において自動車に装着してある純正のばねと同じ高さに形成されており、端部の形状も純正のものと同じようにばね座に収めることができる形状である。
なお、懸架装置用コイルばねS1は、全長:400mm、外径:112mm、素線の直径:10mmであるが、コイルばねの形状は多種多様であり、この寸法に限定されるものではない。
【0019】
(作 用)
図2は図1に示す懸架装置用コイルばねの切断調整部を所要位置で切断して低くした状態を示す正面図、
図3は図2に示す切断した懸架装置用コイルばねを自動車の後部車輪の懸架部に装着した状態を示す説明図である。
図1ないし図3を参照して、本発明に係る懸架装置用コイルばねS1の作用を説明する。なお、図3では図示の便宜上、車輪を取り外した状態を示している。
【0020】
懸架装置用コイルばねS1は、図3に示すように、入子式で伸縮自在なショックアブソーバ3の上下のばね座31、32間に装着される。懸架装置用コイルばねS1の上下端部は、ばね座31、32にそれぞれ収まっている。懸架装置用コイルばねS1は次のように作用する。
車高を低くするために懸架装置用コイルばねS1を低くするときには、ばねの上端部に設けてある切断調整部2の素線1を、例えば図1におけるP部分で切断する。これによって、懸架装置用コイルばねS1の高さを、素線1の直径の約二本分低く調整することができる。
【0021】
このとき、切断側、すなわち残りの切断調整部2の端部形状は、切断前と本質的に変わることがなく、上部側のばね座31へ支障なく収めることができる。
なお、切断調整部2で素線1を切断した懸架装置用コイルばねS1を自動車に装着してみて、更に車高を低くしたい場合は、再度切断調整部2の範囲内で素線1を切断して調整すればよい。
【0022】
なお、本明細書で使用している用語と表現は、あくまで説明上のものであって限定的なものではなく、上記用語、表現と等価の用語、表現を除外するものではない。また、本発明は図示されている実施の形態に限定されるものではなく、技術思想の範囲内において種々の変形が可能である。
【0023】
【発明の効果】
本発明は上記構成を備え、次の効果を有する。
本発明に係る自動車の懸架装置用コイルばねによれば、車高を低くするためにコイルばねを低くするときには、コイルばねの上端部と下端部の何れか一方または双方に設けてある切断調整部の素線を適当な位置で切断すればよい。なお、コイルばねの高さの調整にあたっては、素線を密接させて複数回巻くことにより形成された切断調整部の範囲内で素線を切断するので、切断側の端部形状は、切断前と本質的に変わることがなく、ばね座に支障なく収めることができる。
これにより、コイルばねの高さを例えばmm単位で微調整することが可能となるので、コイルばねを汎用的に使用でき、車高を低く調整するという客のニーズに、より少ない種類のコイルばねで細かく対応できる。
また、切断調整部の巻き数を増やすことによって切断調整部の高さを高くしておけば、車高の調整可能な範囲が広くなり、客のニーズにより細かく対応できる。
【図面の簡単な説明】
【図1】 本発明に係る自動車の懸架装置用コイルばねの一実施の形態を示す正面図。
【図2】 図1に示す懸架装置用コイルばねの切断調整部を所要位置で切断して低くした状態を示す正面図。
【図3】 図2に示す切断した懸架装置用コイルばねを自動車の後部車輪の懸架部に装着した状態を示す説明図。
【図4】 従来の自動車の懸架装置用コイルばねの一例を示す斜視図。
【符号の説明】
S1、S2 懸架装置用コイルばね
1 素線
2、2a 切断調整部
3 ショックアブソーバ
31、32 ばね座
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coil spring for a suspension device of an automobile. More specifically, even if the end of the coil spring is cut to adjust the height, the cut portion can be accommodated in the spring seat, and the height can be finely adjusted so that it can be used for general purposes. About.
[0002]
[Prior art]
In the suspension part of the front wheel and the rear wheel of an automobile, a coil spring as shown in FIG. 5 is usually employed as a shock absorber together with a hydraulic shock absorber. The coil spring is mounted between the spring seats provided above and below the shock absorber so that both ends are accommodated in the spring seat. The coil spring absorbs a shock transmitted from the road surface during traveling and is an element that determines the vehicle height.
[0003]
By the way, in recent years, the trend of dressing up automobiles to enhance fashionability has become stronger. One way to do this is to lower the vehicle height so that the gap between the tire and the fender becomes narrower.
To lower the vehicle height, the coil spring is not a genuine one, but it has a low range that falls within the legally regulated value (vehicle height: 90 mm or more), or has a large number of turns (narrow pitch) and a weak repulsive force. The method of exchanging was taken.
[0004]
Since the upper and lower ends of the coil spring are housed in the spring seats provided above and below the shock absorber as described above, the shape of the spring seat and the end shape of the coil spring that fits in the spring seat are closely related. If the end shape of the coil spring is not a predetermined shape, the end portion of the coil spring cannot be stored in the spring seat.
[0005]
[Problems to be solved by the invention]
However, the above-described conventional coil springs for automobile suspension devices have the following problems.
That is, as described above, the shape of the upper and lower ends of the coil spring that matches the shape of the spring seat is determined. For example, if one end side is simply cut and lowered, the end shape changes. Will not fit in and will not fit.
Therefore, in order to respond precisely to customers' needs to adjust the vehicle height by reducing the height of the coil spring, many types of coil springs with different end heights that fit in the spring seat are prepared in advance. It was necessary to keep it.
[0006]
However, there are various types of automobiles, and the shape and size of the spring seats are also various. For this reason, it is not practical to prepare many types having different heights as described above and to combine those having different shapes of the upper and lower end portions because the number of types of coil springs is excessive. For this reason, the proposal of the coil spring for suspension which can be used partially for a general purpose and can reduce the kind prepared beforehand was desired.
[0007]
(the purpose)
The present invention solves the above problems, and even if the end of the coil spring is cut to adjust the height, the cut portion can be stored in the spring seat, and the height can be finely adjusted. The purpose of the present invention is to provide a coil spring for a suspension device of an automobile that can be used universally and can finely meet the needs of customers for adjusting the vehicle height with a smaller number of coil springs.
[0008]
[Means for Solving the Problems]
The means of the present invention taken to achieve the above object are as follows.
That is, the present invention
A coil spring for a suspension system of an automobile,
In either one or both of the upper and lower ends, by closely strands Yes by cutting adjusting unit provided by winding a plurality of times, it is possible to adjust lower the height of the vehicle by cutting the cut adjuster appropriate The end abutting against the spring seat is formed so as to fit into the spring seat before and after cutting .
This is a coil spring for an automobile suspension system.
[0010]
The pitch of the strands of the cutting adjusting portion is a pitch with no gap between the strands.
Further, the diameter of the cutting adjusting portion is not particularly limited, and is appropriately set according to the shape and size of the spring seat.
[0011]
The height of the coil spring before cutting may be lower or higher than a genuine spring. Moreover, it may become the same height. If the spring hardness is the same as the genuine one, the vehicle height will not drop unless the spring is lowered, but if the spring hardness is softer than the genuine one by increasing the number of turns or increasing the spring diameter This is because the vehicle height can be lowered even if the height is the same or higher.
[0012]
As the types of coil springs, there are an equal pitch spring having the same pitch over the entire length of the portion excluding the cutting adjustment portion, and an unequal pitch spring having different pitches. In addition to a spring having the same diameter over the entire length, there are a conical spring whose one end is gradually increased in diameter, a drum-shaped spring in which an intermediate portion is constricted, a barrel spring in which an intermediate portion is swollen, and the like. Furthermore, for example, it is possible to employ a spring that combines the above-mentioned features such that the other end side is narrowed with the same diameter from one end side to the other end side.
[0013]
As for the wire shape at the end of the coil spring, an open end with the wire pitch kept as it is, a kind of open end, a tangent tail end with the end of the wire facing the tangential direction, and also the end of the wire There is a big tail end where the diameter is extremely small, and a closed end whose shape is changed by deforming the wire.
Further, each of the open end and the closed end includes one in which the strand of the terminal surface portion is cut (no grinding), and one in which the terminal surface portion is partially ground (taper).
[0014]
(Function)
The coil spring for an automobile suspension according to the present invention operates as follows.
The coil spring for a suspension device has a shape that can be accommodated in the spring seat in the same manner as the genuine shape of the end portion accommodated in the spring seat.
When the coil spring is lowered in order to lower the vehicle height, the strands of the cutting adjusting portion provided at either or both of the upper end portion and the lower end portion of the coil spring may be cut at an appropriate position. Note that when adjusting the height of the coil spring, the strand is cut within the range of the cutting adjustment portion formed by closely winding the strand and winding it a plurality of times. It can be stored in the spring seat without hindrance.
[0015]
As a result, the height of the coil spring can be finely adjusted, for example, in the unit of mm, so that the coil spring can be used for general purposes, and there are fewer types of coil springs for the needs of customers to adjust the vehicle height low. It can respond finely.
Further, if the height of the cutting adjustment unit is increased by increasing the number of windings of the cutting adjustment unit, the range in which the vehicle height can be adjusted is widened, and it is possible to respond more precisely to customer needs.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a coil spring for a suspension device for an automobile according to the present invention.
The suspension device coil spring S1 is formed by spirally winding a wire 1 made of spring steel. The lower end portion of the suspension device coil spring S1 is a closed end having a slightly smaller diameter.
[0017]
The upper end portion of the suspension device coil spring S1 is provided with a cutting adjusting portion 2 in which a wire is wound a plurality of times with the same diameter and the same pitch. The pitch of the strands 1 of the cutting adjusting unit 2 is set to a pitch with no gap between the strands 1. In addition, the part except the cutting | disconnection adjustment part 2 among coil spring S1 for suspension apparatuses is equal pitch.
[0018]
Further, the suspension device coil spring S1 is formed at the same height as a genuine spring mounted on a vehicle at the time of shipment from a manufacturing factory, and the end shape is housed in a spring seat in the same manner as a genuine spring. It is a shape that can be.
The suspension device coil spring S1 has a total length of 400 mm, an outer diameter of 112 mm, and a wire diameter of 10 mm. However, the shape of the coil spring is various, and is not limited to this dimension.
[0019]
(Work)
FIG. 2 is a front view showing a state in which the cutting adjustment portion of the coil spring for the suspension device shown in FIG.
FIG. 3 is an explanatory view showing a state where the cut coil spring for the suspension device shown in FIG. 2 is attached to the suspension portion of the rear wheel of the automobile.
With reference to FIG. 1 thru | or FIG. 3, the effect | action of the coil spring S1 for suspension apparatuses which concerns on this invention is demonstrated. Note that FIG. 3 shows a state in which the wheel is removed for convenience of illustration.
[0020]
As shown in FIG. 3, the suspension device coil spring S <b> 1 is mounted between the upper and lower spring seats 31 and 32 of the telescopic shock absorber 3. The upper and lower ends of the suspension device coil spring S1 are accommodated in the spring seats 31 and 32, respectively. The suspension device coil spring S1 operates as follows.
When lowering the suspension device coil spring S1 in order to lower the vehicle height, the element wire 1 of the cutting adjusting portion 2 provided at the upper end of the spring is cut, for example, at a portion P in FIG. As a result, the height of the suspension device coil spring S1 can be adjusted to be about two lower than the diameter of the wire 1.
[0021]
At this time, the shape of the end of the cutting side, that is, the remaining cutting adjusting portion 2 is essentially unchanged from that before cutting and can be accommodated in the upper spring seat 31 without any trouble.
In addition, when mounting the coil spring S1 for a suspension device, which has been cut from the wire 1 by the cutting adjustment unit 2, on the automobile, and further reducing the vehicle height, the wire 1 is cut again within the range of the cutting adjustment unit 2. And adjust it.
[0022]
Note that the terms and expressions used in the present specification are merely explanatory and not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.
[0023]
【The invention's effect】
The present invention has the above-described configuration and has the following effects.
According to the coil spring for a suspension device for an automobile according to the present invention, when the coil spring is lowered in order to lower the vehicle height, the cutting adjustment portion provided at one or both of the upper end portion and the lower end portion of the coil spring. What is necessary is just to cut | disconnect this strand at an appropriate position. Note that when adjusting the height of the coil spring, the strand is cut within the range of the cutting adjustment portion formed by closely winding the strand and winding it a plurality of times. It can be stored in the spring seat without hindrance.
As a result, the height of the coil spring can be finely adjusted, for example, in the unit of mm, so that the coil spring can be used for general purposes, and there are fewer types of coil springs for the needs of customers to adjust the vehicle height low. It can respond finely.
Further, if the height of the cutting adjustment unit is increased by increasing the number of windings of the cutting adjustment unit, the range in which the vehicle height can be adjusted is widened, and it is possible to respond more precisely to customer needs.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a coil spring for a suspension device for an automobile according to the present invention.
FIG. 2 is a front view showing a state in which a cutting adjustment portion of the suspension device coil spring shown in FIG. 1 is cut and lowered at a required position;
3 is an explanatory view showing a state where the cut coil spring for a suspension device shown in FIG. 2 is mounted on a suspension portion of a rear wheel of an automobile. FIG.
FIG. 4 is a perspective view showing an example of a conventional coil spring for a suspension device of an automobile.
[Explanation of symbols]
S1, S2 Coil spring for suspension device 1 Wire 2, 2a Cutting adjustment part 3 Shock absorber 31, 32 Spring seat

Claims (1)

自動車の懸架装置用コイルばねであって、
上端部と下端部の何れか一方または双方に、素線を密接させて複数回巻くことにより切断調整部が設けてあり、切断調整部を適宜切断することにより車の高さを低く調整できるとともにばね座に当接する端部が、切断前及び切断後においても、ばね座に収まる形状となるように形成してあることを特徴とする、
自動車の懸架装置用コイルばね。
A coil spring for a suspension system of an automobile,
In either one or both of the upper and lower ends, by closely strands Yes by cutting adjusting unit provided by winding a plurality of times, it is possible to adjust lower the height of the vehicle by cutting the cut adjuster appropriate The end abutting against the spring seat is formed to have a shape that fits into the spring seat before and after cutting ,
Coil spring for automobile suspension system.
JP10181199A 1999-04-08 1999-04-08 Coil spring for automobile suspension system Expired - Fee Related JP3857463B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10181199A JP3857463B2 (en) 1999-04-08 1999-04-08 Coil spring for automobile suspension system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10181199A JP3857463B2 (en) 1999-04-08 1999-04-08 Coil spring for automobile suspension system

Publications (2)

Publication Number Publication Date
JP2000291706A JP2000291706A (en) 2000-10-20
JP3857463B2 true JP3857463B2 (en) 2006-12-13

Family

ID=14310527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10181199A Expired - Fee Related JP3857463B2 (en) 1999-04-08 1999-04-08 Coil spring for automobile suspension system

Country Status (1)

Country Link
JP (1) JP3857463B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4315381B2 (en) * 2004-09-10 2009-08-19 ボッシュ株式会社 Coil spring and fluid pressure booster using the same
DE102007060951A1 (en) * 2007-12-18 2009-06-25 Robert Bosch Gmbh Pressure accumulator, in particular for a hydraulic unit of a hydraulic vehicle brake system with electronic wheel slip control
JP6493803B2 (en) * 2015-07-10 2019-04-03 株式会社リコー Drive transmission device and image forming apparatus

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