JPH0637910B2 - Ceramic leaf spring device - Google Patents
Ceramic leaf spring deviceInfo
- Publication number
- JPH0637910B2 JPH0637910B2 JP61081528A JP8152886A JPH0637910B2 JP H0637910 B2 JPH0637910 B2 JP H0637910B2 JP 61081528 A JP61081528 A JP 61081528A JP 8152886 A JP8152886 A JP 8152886A JP H0637910 B2 JPH0637910 B2 JP H0637910B2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- spring plate
- ceramic
- leaf spring
- plate
- 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.)
- Expired - Lifetime
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、高温雰囲気中でも使用可能なセラミックス板
ばね装置に関する。TECHNICAL FIELD The present invention relates to a ceramic leaf spring device that can be used even in a high temperature atmosphere.
従来より各種機器の緩衝用あるいはそれ以外の用途に鋼
製の重ね板ばね装置が広く用いられてきた。また、鋼製
ばねに代って、ＦＲＰ（繊維強化合成樹脂）製の板ばね
装置も実用化されている。2. Description of the Related Art Conventionally, a steel leaf spring device has been widely used for cushioning various devices or for other purposes. Further, a leaf spring device made of FRP (fiber reinforced synthetic resin) has been put into practical use in place of the steel spring.
しかしながら鋼製ばねは数百℃以上の高温雰囲気中で使
用された場合にへたりを生じ、所定のばね特性を発揮で
きなくなるため、ある温度以上での使用は不可能であっ
た。またＦＲＰばね板もその材料の特質から高温での使
用は到底不可能である。そこで、鋼に代るばね用の材料
として耐熱製に優れたセラミックスを使用することも考
えられている。However, when a steel spring is used in a high-temperature atmosphere of several hundreds of degrees Celsius or more, it becomes tired and cannot exhibit a predetermined spring characteristic, so that it cannot be used at a certain temperature or higher. Also, the FRP spring plate cannot be used at high temperature due to the characteristics of its material. Therefore, it has been considered to use ceramics having excellent heat resistance as a spring material instead of steel.
しかしながらセラミックスは弾性係数Ｅが鋼に比べて高
くかつ脆性材料であるため、撓みを大きくとることがで
きない。言替えると、セラミックス製の板ばねの撓みを
大きくするには、板ばねを大形化せざるをえず、限られ
た収納スペースに収めることが難しくなる。そうかとい
って、比較的狭いスペースに収納できる小形のものは撓
みが小さ過ぎるために、ごく限られた用途にしか使用で
きない。However, since ceramics has a higher elastic modulus E than steel and is a brittle material, it is not possible to obtain a large amount of bending. In other words, in order to increase the bending of the ceramic leaf spring, the leaf spring must be upsized, and it becomes difficult to fit it in a limited storage space. On the other hand, small things that can be stored in a relatively narrow space have too small a deflection that they can be used in very limited applications.
これらの理由から、現状では満足すべきセラミックス板
ばね装置が得られていなかった。For these reasons, at present, a satisfactory ceramic leaf spring device has not been obtained.
本発明のセラミックス板ばね装置は、セラミックスまた
は金属からなるケースと、上記ケース内に収容されかつ
厚み方向に互いに隙間をあけて複数枚設けられたセラミ
ックス製のばね板と、互いに隣り合う上記ばね板間にそ
れぞれ介在させられかつ各ばね板毎にばね板の長手方向
中央部と長手方向両端部近傍とに交互に位置を変えて配
置されかつ上記ばね板の板幅方向に直線状に延びるスペ
ーサとを具備したものである。The ceramic leaf spring device of the present invention includes a case made of ceramics or metal, a plurality of ceramic spring plates housed in the case and provided with a gap in the thickness direction, and the spring plates adjacent to each other. Spacers which are respectively interposed between the spring plates and which are alternately arranged at the central portion of the spring plate in the longitudinal direction and in the vicinity of both longitudinal end portions thereof and which extend linearly in the plate width direction of the spring plate. It is equipped with.
上記構成のセラミックス板ばね装置は、セラミックス製
の各ばね板がそれぞれスペーサを撓みの支点として各々
独立して撓み、しかも各ばね板の長手方向中央部から両
端部までのほぼ全長がばね板の有効スパンとして働くた
め、ばね板１枚の撓みは小さくとも、上述のような積層
構造とすることによって、比較的小形のばね板を用いて
いながら撓みを大きくとることができる。そして各ばね
板は耐熱性に優れたセラミックス製であるから、鋼製ば
ね板ではへたりを生じてしまうような高温度雰囲気中で
も実用に充分耐えることができる。また、前記スペーサ
はセラミックス製ばね板の板幅方向に直線状に延びてい
るから、負荷荷重によってばね板が撓む際には主として
曲げ応力のみが生じるような使われ方となり、曲げ以外
の有害な応力が生じることを回避できる。In the ceramic leaf spring device configured as described above, each spring leaf made of ceramic flexes independently with the spacer as the fulcrum of the flexure, and moreover, substantially the entire length from the longitudinal center to both ends of the spring leaf is effective. Since the spring plate acts as a span, even if the flexure of one spring plate is small, the flexure can be made large by using the above-mentioned laminated structure while using a relatively small spring plate. Since each spring plate is made of ceramics having excellent heat resistance, it can withstand practical use even in a high temperature atmosphere where a steel spring plate causes fatigue. Also, since the spacer extends linearly in the width direction of the ceramic spring plate, when the spring plate is bent by a load, it is used mainly so that only bending stress is generated. It is possible to avoid the occurrence of various stresses.
第１図および第２図に示されたセラミックス板ばね装置
１は、セラミックス製のケース２を備えている。このケ
ース２は例えば有底の短円筒状をなしていて、側壁部２
ａと底壁部２ｂとからなる。そしてケース２の内部に、
複数枚のセラミックス製のばね板３がスペーサ４を介し
て互いに隙間をあけて設けられている。The ceramic leaf spring device 1 shown in FIGS. 1 and 2 includes a case 2 made of ceramics. The case 2 has, for example, a bottomed short cylindrical shape, and the side wall 2
It is composed of a and a bottom wall portion 2b. And inside case 2,
A plurality of spring plates 3 made of ceramics are provided with a gap between them via a spacer 4.
上記ばね板３は、第３図および第４図に例示されるよう
に長手方向中央部の板幅が広く、かつ全長にわたって等
厚の形状である。但し、長手方向の全長にわたって実質
的に等板幅としてもよいし、あるいは長手方向中央部の
板厚が厚くなるようなテーパ形状としてもよい。As shown in FIGS. 3 and 4, the spring plate 3 has a shape in which the plate width of the central portion in the longitudinal direction is wide and the thickness is uniform over the entire length. However, the plate width may be substantially equal over the entire length in the longitudinal direction, or may be tapered so that the plate thickness at the central portion in the longitudinal direction becomes thick.
ばね板３の両端部３ａ，３ｂの形状は、図示例の場合そ
れぞれケース２の内面形状に応じておおむね円弧状に形
成されている。従って両端部３ａ，３ｂはばね板３が撓
んでいない状態においてケース２の内面に近接し、ばね
板３の位置決めをなすことができる。In the illustrated example, the both ends 3a and 3b of the spring plate 3 are formed in a generally arcuate shape in accordance with the inner surface shape of the case 2. Therefore, both end portions 3a and 3b are close to the inner surface of the case 2 in a state where the spring plate 3 is not bent, and the spring plate 3 can be positioned.
ばね板３の材質は、望ましくは窒化けい素、炭化けい
素、酸化アルミニウム，部分安定化ジルコニウムなどの
中から選択するが、本装置１を用いる雰囲気温度などの
諸条件に応じて上記以外のセラミックスを用いてもよ
い。The material of the spring plate 3 is preferably selected from silicon nitride, silicon carbide, aluminum oxide, partially stabilized zirconium, etc., but ceramics other than the above may be used depending on various conditions such as the ambient temperature in which the device 1 is used. May be used.
一方、スペーサ４は棒状のセラミックスまたは鋼あるい
は難溶融金属等の耐熱性のある金属からなり、ばね板３
の板幅方向に直線状に延びている。これらスペーサ４
は、互いに隣り合うばね板３間にそれぞれ介在させられ
るが、第１図に例示されるように、ばね板３の長手方向
中央部とばね板３の両端部近傍とに交互に位置を変えて
配置される。なお、左右一対のスペーサ４，４間のピッ
チＰは、図示例のように各ばね板３毎に一定でもよい
が、ピッチＰを変化させるようにしてもよい。そして最
も外側（図面では上側）に位置するばね板３に接する部
材５を介して荷重が負荷される。On the other hand, the spacer 4 is made of a heat-resistant metal such as rod-shaped ceramics, steel, or refractory metal,
Linearly extending in the plate width direction. These spacers 4
Are respectively interposed between the spring plates 3 adjacent to each other, but as shown in FIG. 1, the positions are alternately changed between the central part in the longitudinal direction of the spring plate 3 and the vicinity of both end parts of the spring plate 3. Will be placed. The pitch P between the pair of left and right spacers 4 and 4 may be constant for each spring plate 3 as shown in the figure, but may be varied. Then, a load is applied via the member 5 that contacts the outermost spring plate (upper side in the drawing).
各スペーサ４の両端部４ａ，４ｂは、ケース２に設けら
れた孔等の係止部６に支持されている。この係止部６
は、ばね板３の撓みに対処できるようにケース２の軸線
方向に縦長な形状をなし、各スペーサ４の端部４ａ，４
ｂがそれぞればね板３の板厚方向に移動できるようにな
っている。Both ends 4a and 4b of each spacer 4 are supported by locking portions 6 such as holes provided in the case 2. This locking part 6
Has a shape elongated in the axial direction of the case 2 so as to cope with the bending of the spring plate 3, and the end portions 4 a, 4 of each spacer 4 are formed.
Each of b can move in the plate thickness direction of the spring plate 3.
上記構成のセラミックス板ばね装置１は、荷重支点とな
る部材５を介して外部から荷重が加わると、第５図に示
されるように各ばね板３がスペーサ４を撓みの支点とし
てそれぞれ独立して撓み、各ばね板３の長手方向中央部
から両端部近傍までのほぼ全長がそれぞれ有効スパンと
なるため、１枚毎のばね板３の撓みは小さくとも板ばね
装置１全体としての撓み量は各ばね板３の撓みを合計し
たものとなるから、小スペースでもかなり大きな撓みを
得ることができる。そしてセラミックス製のばね板３を
使用しているから、鋼製ばね板ではへたりを生じて使用
不可能となるような高温度雰囲気中でも実質的にばね特
性に変化を生じることがなく、実用に充分耐えることが
できる。When a load is applied from the outside through the member 5 serving as a load fulcrum, the ceramic plate spring device 1 having the above-described configuration is configured such that each spring plate 3 independently uses the spacer 4 as a fulcrum of bending as shown in FIG. Since the effective span is approximately the entire length from the central portion in the longitudinal direction of each spring plate 3 to the vicinity of both ends, the amount of flexure of the leaf spring device 1 as a whole is Since the bending of the spring plate 3 is the total, the considerably large bending can be obtained even in a small space. Further, since the spring plate 3 made of ceramics is used, the spring characteristics do not substantially change even in a high temperature atmosphere where a steel spring plate causes fatigue and becomes unusable. Can withstand enough.
なお、ケース２は円筒状に限るものではない。例えば、
第６図に示されるように平面形状が略矩形のケース２で
もよいし、あるいは楕円形状のケースを用いてもよい。
また、ケース２の材質に例えば鋼や難溶融金属等の耐熱
性のある金属を用いることもできる。The case 2 is not limited to the cylindrical shape. For example,
As shown in FIG. 6, the case 2 having a substantially rectangular plane shape may be used, or the case having an elliptical shape may be used.
Further, the case 2 may be made of a heat-resistant metal such as steel or refractory metal.
また、スペーサ４の形状は上記実施例のような丸棒に限
らず、例えば第７図に示されるような断面が楕円形の棒
とか、矩形断面の棒（第８図）でもよいし、あるいは第
９図のような形状でもよい。Further, the shape of the spacer 4 is not limited to the round bar as in the above embodiment, and may be, for example, a bar having an elliptical cross section as shown in FIG. 7 or a bar having a rectangular cross section (FIG. 8), or The shape shown in FIG. 9 may be used.
本発明によれば、高温雰囲気中で使用されてもへたるこ
とのない耐熱性のある板ばね装置が得られ、かつ小スペ
ースでも大きな撓みが得られる。すなわち、各ばね板の
長手方向中央から両端部に至るほぼ全長がそれぞれ有効
スパンとなって各ばね板がそれぞれ独立して撓むため、
セラミックスのように弾性係数がきわめて大きい脆性材
料からなるばね板が使われていても、装置全体としての
撓みを大きくとることができるものである。According to the present invention, it is possible to obtain a leaf spring device having heat resistance that does not sag even when used in a high temperature atmosphere, and to obtain large bending even in a small space. That is, almost the entire length from the center in the longitudinal direction of each spring plate to both ends becomes the effective span, and each spring plate bends independently.
Even if a spring plate made of a brittle material having an extremely large elastic coefficient such as ceramics is used, it is possible to largely flex the device as a whole.
第１図ないし第５図は本発明の一実施例を示し、第１図
は板ばね装置の断面図、第２図は平面図、第３図はばね
板の平面図、第４図はばね板の側面図、第５図は荷重を
負荷した状態の断面図である。第６図は本発明の他の実
施例を示す板ばね装置の平面図、第７図ないし第９図は
それぞれスペーサの互いに異なる実施態様を示す斜視図
である。 １……セラミックス板ばね装置、２……ケース、３……
ばね板、４……スペーサ。1 to 5 show an embodiment of the present invention. FIG. 1 is a sectional view of a leaf spring device, FIG. 2 is a plan view, FIG. 3 is a plan view of a spring plate, and FIG. 4 is a spring. FIG. 5 is a side view of the plate, and FIG. 5 is a cross-sectional view in a state where a load is applied. FIG. 6 is a plan view of a leaf spring device showing another embodiment of the present invention, and FIGS. 7 to 9 are perspective views showing different embodiments of the spacer. 1 ... Ceramic leaf spring device, 2 ... Case, 3 ...
Spring plate, 4 ... Spacer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 東野 豊之 神奈川県横浜市磯子区新磯子町１番地 日 本発条株式会社内 (56)参考文献 特開 昭56−35735（ＪＰ，Ａ) 特開 昭58−178032（ＪＰ，Ａ) 特開 昭61−88033（ＪＰ，Ａ) 特公 昭27−566（ＪＰ，Ｂ１) 特公 昭13−4307（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toyoyuki Higashi, Inventor Toyoyuki Higashi, No. 1, Shinisogo-cho, Isogo-ku, Yokohama-shi, Kanagawa Nihon Hatsujo Co., Ltd. (56) Sho 58-178032 (JP, A) JP 61-88033 (JP, A) JP 27-566 (JP, B1) JP 13-4307 (JP, B1)
Claims (1)
と、上記ケース内に収容されかつ厚み方向に互いに隙間
をあけて複数枚設けられたセラミックス製のばね板と、
互いに隣り合う上記ばね板間にそれぞれ介在させられか
つ各ばね板毎にばね板の長手方向中央部と長手方向両端
部近傍とに交互に位置を変えて配置されかつ上記ばね板
の板幅方向に直線状に延びるスペーサとを具備したこと
を特徴とするセラミックス板ばね装置。1. A case made of ceramics or a metal, and a plurality of ceramic spring plates housed in the case and provided with a plurality of gaps in the thickness direction.
The spring plates are respectively interposed between the spring plates adjacent to each other, and the spring plates are arranged such that their positions are alternately changed in the longitudinal center and in the vicinity of both ends in the longitudinal direction of each spring, and in the plate width direction of the spring. A ceramic leaf spring device, comprising: a linearly extending spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081528A JPH0637910B2 (en) | 1986-04-09 | 1986-04-09 | Ceramic leaf spring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081528A JPH0637910B2 (en) | 1986-04-09 | 1986-04-09 | Ceramic leaf spring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62242144A JPS62242144A (en) | 1987-10-22 |
| JPH0637910B2 true JPH0637910B2 (en) | 1994-05-18 |
Family
ID=13748821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61081528A Expired - Lifetime JPH0637910B2 (en) | 1986-04-09 | 1986-04-09 | Ceramic leaf spring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637910B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2507761B2 (en) * | 1987-10-26 | 1996-06-19 | 日本発条株式会社 | Ceramics molding method |
| JP3298159B2 (en) * | 1992-07-14 | 2002-07-02 | 石川島播磨重工業株式会社 | Manufacturing method of ceramic hollow disk laminated spring |
| JP2018057133A (en) * | 2016-09-28 | 2018-04-05 | トヨタ自動車株式会社 | Power conversion equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5635735A (en) * | 1979-08-29 | 1981-04-08 | Sumitomo Chem Co Ltd | Heat resistant spring |
| JPS58178032A (en) * | 1982-04-12 | 1983-10-18 | Mitsubishi Steel Mfg Co Ltd | Belleville spring |
| JPS6188033A (en) * | 1984-10-04 | 1986-05-06 | Kyocera Corp | Spring made of ceramics |
-
1986
- 1986-04-09 JP JP61081528A patent/JPH0637910B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62242144A (en) | 1987-10-22 |
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