JPS5989839A - Frp leaf spring device - Google Patents
Frp leaf spring deviceInfo
- Publication number
- JPS5989839A JPS5989839A JP19808782A JP19808782A JPS5989839A JP S5989839 A JPS5989839 A JP S5989839A JP 19808782 A JP19808782 A JP 19808782A JP 19808782 A JP19808782 A JP 19808782A JP S5989839 A JPS5989839 A JP S5989839A
- Authority
- JP
- Japan
- Prior art keywords
- spring plate
- plate
- main spring
- frp
- load
- 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.)
- Granted
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
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
- F16F1/368—Leaf springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は複数のばね板を有するＦＲＰ製の板ばね装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an FRP leaf spring device having a plurality of spring plates.
従来のＦＲＰ板ばね装置は、例えば第１図に示されるよ
うにＦＲＰ製の主ばね板ａ Ｋ ｓ同じくＦＲＰ製の補
助ばね板すを重ねて設け、これらばね板ａ−ｂ相互を摩
耗防止のためのセンタースペーサｃｔ−挾んてセンター
がルー） ｄによっテ締結した構造となっている。In a conventional FRP leaf spring device, for example, as shown in Fig. 1, a main spring plate a K made of FRP and an auxiliary spring plate also made of FRP are stacked one on top of the other, and these spring plates a and b are connected to each other to prevent wear. It has a structure in which the center spacer ct and the center are held together by d.
上記構造のＦＲＰ板ばね装置は、例えば自動車の°車体
懸架装置などに用いられる。この場合、目玉部ｅ、ｅが
車体側に、ばね板中央部が車軸側に固定される。そして
目玉部ｅ、ｅに下向きの荷重が加わシ主ばね板ａが図示
矢印方向Ｉ／ｃ撓んだ場合に、ある一定の撓みを超える
と主ばね板ａが補助ばね板の両端部ｂ／ 、 ｂｌに接
触し、主に“仁の両端部ｂ／ 、 ｂｌで主ばね板ａの
荷重を支持する仁とになる。従ってばね特性は第２図に
想像線に、で示すように、補助ばね板ｂＩ／ｃ接触した
時点から急激に荷重−たわみ曲線が立ち上がる特性とな
夛、乗心地が悪化するという欠点があつ産。特にＦＲＰ
板ばね装置の場合忙は上記したように各ばね板間に摩耗
を防止するためのセンタースペーサＣを介在させる場合
が多く、このセンタースペー？Ｃの厚み分だけばね板間
に隙間が形成されるため、主ばね板ａがある一定の撓み
ｔｔ−超えた時点で主ばね板ａが補助ばね板の両端部ｂ
／ 、 ｂｌに゛急に接触することになシ、な、めらか
な荷重−たわみ＊Ｓｔ得にくいという問題がやった。The FRP leaf spring device having the above structure is used, for example, in an automobile body suspension system. In this case, the eye parts e and e are fixed to the vehicle body side, and the center part of the spring plate is fixed to the axle side. When a downward load is applied to the centerpieces e and e, and the main spring plate a is bent in the direction of the arrow I/c, when the deflection exceeds a certain level, the main spring plate a is bent at both ends b/c of the auxiliary spring plate. , bl, and mainly support the load of the main spring plate a at both ends b/ and bl.Therefore, the spring characteristics are as shown by the imaginary line in Fig. 2. The spring plate bI/c has the characteristic that the load-deflection curve rises suddenly from the point of contact, and the disadvantage is that the riding comfort deteriorates.Especially for FRP.
In the case of leaf spring devices, as mentioned above, a center spacer C is often interposed between each spring plate to prevent wear. Since a gap is formed between the spring plates by the thickness of C, when the main spring plate a exceeds a certain deflection tt, the main spring plate a bends to both ends b of the auxiliary spring plate.
/ The problem is that it is difficult to obtain a smooth load-deflection*St without sudden contact with BL.
本発明は上記事情にもとづきなされたものでその目的と
するととろけ、荷重−九わみ曲線がなめらかに連続し、
特に車輛懸架用として用いた場合に乗シ心地を向上でき
るＦＲＰ板ばね装置を提供することＫある。The present invention has been made based on the above circumstances, and its purpose is to melt, the load-9 deflection curve continues smoothly,
It is an object of the present invention to provide an FRP leaf spring device that can improve riding comfort especially when used for suspension of a vehicle.
すなわち本発明は、ＦＲＰ製の主ばね板と、との主ばね
板に重ねて設けられかつ主ばね板とほぼ同じ長さを有す
るＦＲＰ製の補助ばね板と、弾性を有する素材からな９
．かつ上記主ばね板または補助ばね板の少なくともいず
れか一方の端部付近に設けられてこれらばね板間に介在
する弾性部材とを具備したＦＲＰ板ばね装置である。That is, the present invention provides a main spring plate made of FRP, an auxiliary spring plate made of FRP that is provided overlapping the main spring plate and has approximately the same length as the main spring plate, and 9 made of an elastic material.
．． The FRP leaf spring device further includes an elastic member provided near an end of at least one of the main spring plate or the auxiliary spring plate and interposed between the spring plates.
以下本発明の８１実施例について第３図および第４図を
参照して説明する。図中ｌはＦＲＰ ＃の主ばね板であ
って、この主ばね板１は図示上方に反シ上った形状をな
しているとともに、その両端部に金属などからなる目玉
部材２．２を取着しである。Embodiment 81 of the present invention will be described below with reference to FIGS. 3 and 4. In the figure, l is the main spring plate of FRP #, and this main spring plate 1 has a shape that is upwardly upward in the figure, and has center members 2.2 made of metal etc. at both ends. It's a dress.
そして上記主ばね板１の下側に、同じ＜ ＦＲＰ製の補
助ばね板３が重ねて設けられている。この補助ばね板３
は主にね板１とほぼ同じ長さ全盲している。これら主ば
ね板１と補助ばね板３は、その長手方向中央部に摩耗防
止用のセンタースペーサ４を介在させてセンターメルト
５によって互いに締結しである。Under the main spring plate 1, an auxiliary spring plate 3 made of the same FRP is provided in an overlapping manner. This auxiliary spring plate 3
Mainly, it is completely blind for about the same length as Neban 1. The main spring plate 1 and the auxiliary spring plate 3 are fastened to each other by a center melt 5 with a center spacer 4 for preventing wear interposed in the center in the longitudinal direction.
そして上記補助ばね板３の両端部付近にラバーなどのよ
うに弾性を有する素材からなる弾性部材６．６がそれぞ
れ取着されている。これら弾性部材６，６は、上記主ば
ね板１が図示矢印方向（下向き）に撓んだ場合に、主ば
ね板１０両端部下面または目玉部材２．２が当接できる
ような位置に設けられている・
また上記弾性部材６．６は、第４図に示されるように、
圧縮したときの変形量の増加に伴なって荷重が累進的に
増大するような非線形ばね特性を有してｈる。Elastic members 6.6 made of an elastic material such as rubber are attached near both ends of the auxiliary spring plate 3, respectively. These elastic members 6, 6 are provided at positions where the lower surfaces of both ends of the main spring plate 10 or the center member 2.2 can come into contact with the main spring plate 10 when the main spring plate 1 is bent in the direction of the arrow shown (downward). In addition, as shown in FIG. 4, the elastic member 6.6 is
It has nonlinear spring characteristics such that the load increases progressively as the amount of deformation increases when compressed.
以上のよう忙構成されたＦＲＰ板ばね装置は、自動車の
車体懸架装置に用いる場合、目玉部材２．２′ｔ−車体
側に、またセンタービルト５付近ヲ箪軸側に取付ける。When the FRP leaf spring device constructed as described above is used in a vehicle body suspension system of an automobile, it is attached to the eyepiece member 2.2't-vehicle body side, and near the center building 5 to the side of the car body.
そして目玉部材２．２に下向きの荷重が加わシ、主ばね
板１が下側に帰んだ場合、主ばね板ｌが弾性部材６，６
に接触する直前までは主ばね板１のみの荷重−たわみ曲
線Ｋｌ （第２図参照）となシ、軽荷重域で柔軟なばね
性が得られる。When a downward load is applied to the center member 2.2 and the main spring plate 1 returns to the lower side, the main spring plate 1
The load-deflection curve Kl of only the main spring plate 1 (see Fig. 2) is maintained until just before contact with the main spring plate 1, and flexible spring properties are obtained in the light load range.
そして荷重の増大に伴なって主ばね板１の撓みが増加し
、弾性部材６，６に主ばね板１の両端部が接触すると、
弾性部材６．６が圧縮され、その反発力が発揮される。As the load increases, the deflection of the main spring plate 1 increases, and when both ends of the main spring plate 1 come into contact with the elastic members 6, 6,
The elastic member 6.6 is compressed and its repulsive force is exerted.
従って主ばね板１のばね定数に弾性部材６．６の反発力
が加算されたばね特性となジ、主ばね板７（Ｄ撓みか大
きくなるほど弾性部材６，６の影響が大′となる。すな
わち第２図に曲線に２で示されるように、なめらかに連
続する荷重−たわみ曲線となる。Therefore, the spring characteristic is the sum of the spring constant of the main spring plate 1 and the repulsive force of the elastic members 6.6. As shown by the curve 2 in FIG. 2, it becomes a smoothly continuous load-deflection curve.
そして更に主ばね板ｌの撓みが増加して弾性部材６，６
の圧縮量が大になシ、その反発力が累進的に急増すると
主ばね板ｌの撓みと弾性部材６，６の圧縮に伴なって補
助ばね板３も一体的に撓み、補助ばね板３のばね定数が
付加される。すなわち大荷重域の荷重−たわみ曲線は実
線に３で示したように立ち上がル、Ｋ２→に３となめら
かに連続するばね特性を得る仁とができる。Then, the deflection of the main spring plate l increases further, and the elastic members 6, 6
When the amount of compression becomes large and the repulsive force rapidly increases progressively, the auxiliary spring plate 3 is also bent integrally with the deflection of the main spring plate l and the compression of the elastic members 6, 6. A spring constant of is added. In other words, the load-deflection curve in the large load range has a rise as shown by 3 in the solid line, and a curve that smoothly continues from K2 to 3 to obtain spring characteristics.
以上のことから明らかなように上記ＦｊＲＰ板ばね装置
忙よれば、荷重の増加に伴な”ってなめらかに連続する
非線形ばね特性を得ることができ、荷重の大小にかかわ
らず良好な乗シ心地を得ることができるのである。As is clear from the above, with the FjRP leaf spring device, it is possible to obtain nonlinear spring characteristics that smoothly continue as the load increases, and provides good riding comfort regardless of the magnitude of the load. can be obtained.
なお第一５図は本発明の第２実施例を示す。この場合、
補助ばね板３は主ばね板１と同様に無根１に接している
。また、これら弾性部材６゜６の素材としては発泡ウレ
タン等のように比較的大きな弾性変形能力のある合成樹
脂発泡体を使用するようＫしている。Note that FIG. 15 shows a second embodiment of the present invention. in this case,
The auxiliary spring plate 3 is in contact with the rootless plate 1 similarly to the main spring plate 1. Further, as the material for these elastic members 6.degree.6, a synthetic resin foam having a relatively large elastic deformation ability, such as urethane foam, is used.
上記第２実施例によれば、無荷重時に既に弾性部材６．
６が主ばね板側に接しているから、主ばね板１の撓みが
増大すると弾性部材６，６の反発力が次第に加算されつ
つ補助ばね板３を次第に撓ませるととになる。従って第
６図に例示したように荷重−たわみ曲線を更になめらか
に連続させることができる。According to the second embodiment, when no load is applied, the elastic member 6.
Since the spring plate 6 is in contact with the main spring plate side, as the deflection of the main spring plate 1 increases, the repulsive force of the elastic members 6, 6 is gradually added, and the auxiliary spring plate 3 is gradually deflected. Therefore, as illustrated in FIG. 6, the load-deflection curve can be made to continue more smoothly.
また第７図は本発明の第３実施例を示し、この場合の弾
性部材６は、合成樹脂発泡体からなる比較的弾性率の小
さな第１の弾性体６ａの内部にこの弾性体６ａよシも弾
性率の大きな（ばね定数の高い）ラバー等の第２の弾性
体６ｂ′ｔ−入れた２重構造をなしている。Further, FIG. 7 shows a third embodiment of the present invention, in which the elastic member 6 is arranged inside a first elastic body 6a made of synthetic resin foam and having a relatively small elastic modulus. It also has a double structure including a second elastic body 6b't, such as rubber having a large elastic modulus (high spring constant).
従って上記第３実施例によれば、主ばね板ｌの撓み量が
小さいうちは主に第１の弾性体６ａが圧縮されてその反
発力が主ばね板′１のばね定数に付加されるため、荷重
−たわみ曲線は比較的ゆるやかでかつなめらかに上昇す
るカーブとなる。そして主ばね板ｌの撓みが増加して内
部の硬い第２の弾性体６ｂが圧縮され始めると、この時
点から第２の弾性体６ｂの反発力の影響によシ荷重−た
わみ曲線が大きく上昇するような非線形のばね特性が得
られる。Therefore, according to the third embodiment, while the amount of deflection of the main spring plate l is small, the first elastic body 6a is mainly compressed and its repulsive force is added to the spring constant of the main spring plate '1. , the load-deflection curve is a relatively gentle and smoothly rising curve. When the deflection of the main spring plate l increases and the internal hard second elastic body 6b begins to be compressed, the load-deflection curve increases significantly from this point on due to the repulsive force of the second elastic body 6b. This results in nonlinear spring characteristics.
なお、各実施例において弾性部材６，６は主ばね板１側
に取付けるようにしてもよいし、また弾性部材６．６．
の位置は必らずしもばね板の端部でなくとも要するに根
端部付近であればよい。また、ばね板の数は３枚以上で
あってもよいし、片持ち式の板ばね装置にも勿論適用可
能である。In each embodiment, the elastic members 6, 6 may be attached to the main spring plate 1 side, or the elastic members 6, 6, 6, 6, 6, 6, 6, 6, 6 may be attached to the main spring plate 1 side.
The position does not necessarily have to be at the end of the spring plate, but may just be near the root end. Further, the number of spring plates may be three or more, and it is of course applicable to a cantilever type plate spring device.
本発明は前記したように、主ばね板または補助ばね板の
少なくとも込ずれか一方の端部付近に弾性部材を設け、
主ばね板の撓みが増加したときにこの弾性部材を圧縮し
つつ補助ばね板が次第に捕むようにしたものである。従
って本発明によれば、従来品に見られたように主ばね板
が補助ばね板に接触した時点から荷重−たわみ曲線が急
激に立ち上がるとｈりた不具合を防ぐことができ、なめ
らかに連続する荷重−たわみ曲線が得られる。従って例
えば車輛懸架装置に用いた場合忙は、荷重の大小ｋかか
わらず良好な乗シ心地を得ることができる。また補助ば
ね板の長さが主ばね板の長さとほぼ等しいので従来のよ
うに、主ばね板が補助ばね板に接触した際にその接触位
置で主ばね板に曲げ応力が生じるととが無くなり、主ば
ね板の耐久性が向上する。As described above, the present invention provides an elastic member near the end of at least one of the main spring plate or the auxiliary spring plate,
When the deflection of the main spring plate increases, the auxiliary spring plate gradually catches the elastic member while compressing it. Therefore, according to the present invention, it is possible to prevent the problem that occurs when the load-deflection curve suddenly rises from the point when the main spring plate contacts the auxiliary spring plate, as seen in conventional products, and to maintain a smooth continuation. A load-deflection curve is obtained. Therefore, when used in a vehicle suspension system, for example, a good riding comfort can be obtained regardless of the magnitude of the load. In addition, since the length of the auxiliary spring plate is almost equal to the length of the main spring plate, when the main spring plate contacts the auxiliary spring plate and bending stress is generated on the main spring plate at the contact position, as in the conventional case, the torsion disappears. , the durability of the main spring plate is improved.
第１図は従来のＦＲＰ板ばね装Ｍを示す正面図、第２図
は荷重−たわみ特性図、第３図は本発明の第１実施例を
示す正面図、！４図は弾性部材のばね特性図、第５図は
本発明の第２実施例を示す正面図、第６図はその荷重−
たわみ特性図、第７図は本発明の第３実施例を示す板ば
ね装置の一部の正面図である。
１・・・主ばね板、３・・・補助ばね板、４・・・セン
タースペーサ、５・・・センターボルト、６・・・弾性
部材Ｏ
出願人代理人 弁理士 鈴 江 武 彦第１図
第３図
ｆｓ５ 図
第 ７ 図Fig. 1 is a front view showing a conventional FRP leaf spring assembly M, Fig. 2 is a load-deflection characteristic diagram, and Fig. 3 is a front view showing a first embodiment of the present invention. Figure 4 is a spring characteristic diagram of the elastic member, Figure 5 is a front view showing the second embodiment of the present invention, and Figure 6 is its load--
The deflection characteristic diagram, FIG. 7, is a front view of a portion of a leaf spring device showing a third embodiment of the present invention. 1... Main spring plate, 3... Auxiliary spring plate, 4... Center spacer, 5... Center bolt, 6... Elastic member O Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 3 fs5 Figure 7
Claims (1)
かつ主ばね板とほば同じ長さを有するＦＲＰ製の補助ば
ね板と、弾を性を有する素材から々シ、かつ上記上ばね
板または補助ばね板の相互対向面の少なくともいずれか
一方のばね板端部付近に取着された弾性部材とを具備し
たことｆｒ：Ｉ＃徴とするＦＲＰ板ばね装置。A main spring plate made of FRP, an auxiliary spring plate made of FRP that is provided overlapping the main spring plate and has almost the same length as the main spring plate, and is made of a material that has elasticity, and the above-mentioned An FRP leaf spring device comprising: an elastic member attached near the end of at least one of the mutually opposing surfaces of the upper spring plate or the auxiliary spring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19808782A JPS5952301B2 (en) | 1982-11-11 | 1982-11-11 | FRP leaf spring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19808782A JPS5952301B2 (en) | 1982-11-11 | 1982-11-11 | FRP leaf spring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5989839A true JPS5989839A (en) | 1984-05-24 |
| JPS5952301B2 JPS5952301B2 (en) | 1984-12-19 |
Family
ID=16385283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19808782A Expired JPS5952301B2 (en) | 1982-11-11 | 1982-11-11 | FRP leaf spring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952301B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586624A1 (en) * | 1985-09-02 | 1987-03-06 | Ressorts Ind | Devices for guiding and suspending the (front or rear) axle assemblies of vehicles |
| GB2383623A (en) * | 2001-12-27 | 2003-07-02 | Visteon Global Tech Inc | A variable rate multi-arc composite leaf spring assembly |
| US7651107B1 (en) * | 2002-07-25 | 2010-01-26 | Daimler Trucks North America Llc | Suspension deflection system |
| CN102700377A (en) * | 2012-06-06 | 2012-10-03 | 株洲时代新材料科技股份有限公司 | Automobile composite material plate spring assembly and assembly method of same |
-
1982
- 1982-11-11 JP JP19808782A patent/JPS5952301B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586624A1 (en) * | 1985-09-02 | 1987-03-06 | Ressorts Ind | Devices for guiding and suspending the (front or rear) axle assemblies of vehicles |
| GB2383623A (en) * | 2001-12-27 | 2003-07-02 | Visteon Global Tech Inc | A variable rate multi-arc composite leaf spring assembly |
| GB2383623B (en) * | 2001-12-27 | 2004-02-25 | Visteon Global Tech Inc | Variable rate multi-arc composite leaf spring assembly |
| US7651107B1 (en) * | 2002-07-25 | 2010-01-26 | Daimler Trucks North America Llc | Suspension deflection system |
| CN102700377A (en) * | 2012-06-06 | 2012-10-03 | 株洲时代新材料科技股份有限公司 | Automobile composite material plate spring assembly and assembly method of same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5952301B2 (en) | 1984-12-19 |
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