JPH0694044A - Shaft coupling - Google Patents
Shaft couplingInfo
- Publication number
- JPH0694044A JPH0694044A JP4272291A JP27229192A JPH0694044A JP H0694044 A JPH0694044 A JP H0694044A JP 4272291 A JP4272291 A JP 4272291A JP 27229192 A JP27229192 A JP 27229192A JP H0694044 A JPH0694044 A JP H0694044A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- shaft coupling
- synthetic resin
- cylinders
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 38
- 238000010168 coupling process Methods 0.000 title claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 38
- 229920003002 synthetic resin Polymers 0.000 claims description 29
- 239000000057 synthetic resin Substances 0.000 claims description 29
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000001537 Ribes X gardonianum Nutrition 0.000 description 3
- 235000001535 Ribes X utile Nutrition 0.000 description 3
- 235000016919 Ribes petraeum Nutrition 0.000 description 3
- 244000281247 Ribes rubrum Species 0.000 description 3
- 235000002355 Ribes spicatum Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一方の軸と他方の軸と
の間を接続して回転力を伝達する、推進軸等に使用され
る軸継手に関し、例えばエンジンの駆動力を伝達するプ
ロペラシャフト、ステアリングホイ−ルの回転力を伝達
するステアリングシャフトの接続等に利用することがで
きる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft coupling used for a propulsion shaft or the like for connecting one shaft and the other shaft to transmit a rotational force, for example, transmitting a driving force of an engine. It can be used for connecting a propeller shaft and a steering shaft that transmits the rotational force of a steering wheel.
【０００２】[0002]
【従来の技術】従来からの軸継手において、例えばプロ
ペラシャフトの接続に用いられるものの例として図８に
示すような分割タイプのものがある。図において、１１
（１１1 、１１2 、１１3 、… …）は軸継手基体であ
り、これを連結ピン１２によって一般には６個の基体を
連結して軸継手としている。この軸継手においては、一
つの基体１１内に装着された連結ピン１２、１２間に生
じる張力に耐え得るよう、二つのピン１２、１２間を抗
張材１３例えば有機繊維束が巻き掛けされていて、全体
を弾性ゴム１４で覆って弾力性を保持して形成されてい
る。2. Description of the Related Art Among conventional shaft couplings, there is a split type as shown in FIG. 8 as an example of those used for connecting propeller shafts. In the figure, 11
(11 1 , 11 2 , 11 3 , ...) Are shaft joint bases, and generally six bases are connected by a connecting pin 12 to form a shaft joint. In this shaft joint, a tensile material 13, for example, an organic fiber bundle is wound between the two pins 12 and 12 so as to withstand the tension generated between the connecting pins 12 and 12 mounted in the one base 11. Then, the whole is covered with the elastic rubber 14 to maintain elasticity.
【０００３】しかるに、このタイプの軸継手において、
何層にも繊維コ−ド１３を巻きがけすることから各層で
のコ−ドテンションのバラツキ、コ−ド１３、１３間及
びコ−ド１３と弾性ゴム１４との接着性が均一でないと
いう欠点がある。このことは各基体間に特性のバラツキ
があることは当然であり、これらが原因となって、更に
ゴムの加硫工程における熱の作用によってコ−ドの熱収
縮率のバラツキ、弾性ゴムの表面へのコ−ドの浮き出し
等製造上及び性能上にも大きな影響をもたらすこととな
っている。However, in this type of shaft coupling,
Since the fiber cord 13 is wound in many layers, there are variations in the cord tension in each layer, and the adhesiveness between the cords 13 and 13 and between the cord 13 and the elastic rubber 14 is not uniform. There is. This naturally means that there is a variation in the characteristics between the substrates, and these factors also cause variations in the heat shrinkage rate of the cord due to the action of heat in the rubber vulcanization process and the surface of the elastic rubber. It is supposed to have a great influence on the production and the performance such as the protrusion of the cord to the.
【０００４】本発明者は、これら課題を解決するため、
図９に示す如く、駆動側の軸と連結される複数の筒体２
１を同心円上に等距離をもって配列し、被駆動側の軸と
連結される複数の筒体２２を同心円上に等距離をもち、
かつ前記筒体２１と交互に配列してなり、前記各筒体２
１、２２をゴム弾性体２３で囲繞すると共に、隣り合う
当該ゴム弾性体２３、２３間を合成樹脂盤体２４にて連
結した軸継手を提供した（特願平２−４１４５３３
号）。In order to solve these problems, the present inventor has
As shown in FIG. 9, a plurality of cylindrical bodies 2 connected to the drive shaft.
1 are arranged on a concentric circle at equal distances, and a plurality of cylinders 22 connected to the driven side shaft are arranged on the concentric circle at equal distances.
In addition, the cylinders 21 are alternately arranged, and each of the cylinders 2
1 and 22 are surrounded by a rubber elastic body 23, and a shaft coupling in which adjacent rubber elastic bodies 23 and 23 are connected by a synthetic resin board 24 is provided (Japanese Patent Application No. 2-414533).
issue).
【０００５】これは軸継手の基体を単一の合成樹脂２４
をもって構成したもので、軸継手としての強度の向上、
性能のバラツキの低減をなし、製造上の簡便さはもとよ
り、軸継手としてのコスト低減及び軽量化を狙ったもの
である。即ち、かかる既提案の発明は、繊維コ−ドに代
わり筒体２１、２２間に介在する合成樹脂２４が回転ト
ルクを直接伝達することとなり、この合成樹脂２４が筒
体２１、２２間の引っ張り力に抗し、或いは筒体２２、
２１間の圧縮力に抗することによってトルクを被駆動側
の軸に伝えるものであって、従来の技術の欠点を大幅に
改善したものである。This uses a single synthetic resin 24 as the base of the shaft coupling.
It is configured with, to improve the strength as a shaft coupling,
It aims to reduce the cost and weight of the shaft coupling, as well as simplifying the manufacturing, while reducing the variation in performance. That is, in the proposed invention, instead of the fiber cord, the synthetic resin 24 interposed between the tubular bodies 21 and 22 directly transmits the rotational torque, and the synthetic resin 24 pulls between the tubular bodies 21 and 22. Against the force, or the cylinder 22,
The torque is transmitted to the shaft on the driven side by resisting the compression force between the shafts 21, and the drawbacks of the conventional technique are greatly improved.
【０００６】しかしながら、この発明にも改良が必要と
される点も存在し、それは、図１０に示すように合成樹
脂２４が質量体となり、その両側、即ち駆動側と被駆動
側都でバネ系を構成することとなる。即ち、このことは
合成樹脂２４の質量と、ゴム弾性体２３のバネで決定さ
れる固有振動数と、駆動側の振動外力の周波数が一致す
ると、いわゆる共振現象が生じ、駆動側からの振動が著
しく大きくなり、このため防振性能が低下することとな
ってしまう。However, there is also a point in need of improvement in the present invention, which is that the synthetic resin 24 becomes a mass body as shown in FIG. 10, and the spring system is provided on both sides thereof, that is, the driving side and the driven side. Will be configured. That is, this means that when the mass of the synthetic resin 24, the natural frequency determined by the spring of the rubber elastic body 23, and the frequency of the vibration external force on the driving side match, a so-called resonance phenomenon occurs and the vibration from the driving side occurs. It becomes significantly large, which results in deterioration of the vibration isolation performance.
【０００７】[0007]
【発明が解決しようとする課題】本発明は既提案の軸継
手にあって、合成樹脂部とゴムとによって生じる共振現
象をなくすことを目的としたものである。DISCLOSURE OF THE INVENTION The present invention is intended to eliminate the resonance phenomenon caused by the synthetic resin portion and rubber in the already proposed shaft coupling.
【０００８】[0008]
【課題を解決するための手段】本発明による軸継手の構
造は、駆動側の軸端と被駆動側の軸端間に取り付けられ
て動力を伝達する盤状の軸継手であって、駆動側の軸と
連結される複数の筒体１を同心円上に等距離をもって配
列し、被駆動側の軸と連結される複数の筒体２を同心円
上に等距離をもち、かつ前記筒体１と交互に配列してな
り、前記筒体１又は２の一方をゴム弾性体で囲繞すると
共に、これらを合成樹脂盤体にて連結したことを特徴と
している。A structure of a shaft coupling according to the present invention is a disc-shaped shaft coupling that is mounted between a drive-side shaft end and a driven-side shaft end to transmit power. A plurality of cylinders 1 connected to the shafts of the above are arranged on a concentric circle at equal distances, and a plurality of cylinders 2 connected to the driven side shaft are arranged on a concentric circle at the same distance, and It is characterized in that they are arranged alternately and one of the cylinders 1 or 2 is surrounded by a rubber elastic body, and these are connected by a synthetic resin board.
【０００９】[0009]
【作用】本発明は上記したような構成をなし、駆動軸側
又は被駆動軸側の一方の筒体は合成樹脂盤体に対してほ
ぼリジッドに連結されたものである。従って、上記共振
の発生をなくし、それによる防振性能の低下を効果的に
防ぐことができたものである。即ち、本発明の軸継手の
質量−バネ系のモデルは、図７に示す如くとなり、質量
即ち合成樹脂盤体が、例えば駆動側にリジッドに連結さ
れることになり、質量−バネ系は存在せず、合成樹脂盤
体の質量に関する共振は発生しないこととなったのであ
る。The present invention has the above-described structure, and one cylinder on the drive shaft side or the driven shaft side is substantially rigidly connected to the synthetic resin board. Therefore, it is possible to prevent the occurrence of the resonance and effectively prevent the deterioration of the vibration isolation performance. That is, the model of the mass-spring system of the shaft coupling of the present invention is as shown in FIG. 7, and the mass, that is, the synthetic resin board is rigidly connected to the driving side, for example, and the mass-spring system exists. Without doing so, the resonance related to the mass of the synthetic resin board does not occur.
【００１０】[0010]
【具体例】以下図面をもって本発明の軸継手を更に詳述
する。図１は本発明の軸継手の第１実施例を示す正面図
であり、図２は図１におけるＡ−Ａ線での断面図であ
る。図中１は駆動側の軸と連結される筒体であり、２は
被駆動側の軸と連結される筒体である。そして、筒体１
と筒体２は一般に夫々２個が交互に同心上に備えられ、
各軸からのびるヨ−ク（図示せず）に対応している。
又、符号３は、筒体１の全周を囲むゴム弾性体であっ
て、回転使用時における振動の吸収作用、急激な負荷に
対する緩衝作用をなし、更には騒音の低減のために供さ
れるものである。符号４は、筒体１を囲んだゴム弾性体
３及び筒体２を所定位置に配置し、夫々を独立させた合
成樹脂盤体であり、特に筒体２とはゴム弾性体等が介在
せずリジッドに連結されている。ここでは円盤状のナイ
ロン樹脂が使用されて軸継手が形成された。ここに示し
た軸継手において、筒体１及び筒体２は全て同心上に配
置されているものであるが、場合によっては筒体１と筒
体２は夫々別の同心上に配置することも可能である。SPECIFIC EXAMPLES The shaft coupling of the present invention will be described in more detail with reference to the drawings. 1 is a front view showing a first embodiment of a shaft coupling of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. In the figure, reference numeral 1 is a cylinder connected to the drive-side shaft, and 2 is a cylinder connected to the driven-side shaft. And the cylinder 1
In general, two cylinders and two cylinders are alternately arranged concentrically,
It corresponds to a yoke (not shown) extending from each axis.
Reference numeral 3 is a rubber elastic body that surrounds the entire circumference of the cylindrical body 1, and serves to absorb vibrations during use in rotation, to buffer sudden loads, and to reduce noise. It is a thing. Reference numeral 4 is a synthetic resin disc body in which the rubber elastic body 3 and the cylinder body 2 surrounding the cylinder body 1 are arranged at predetermined positions and are independent of each other, and in particular, a rubber elastic body or the like intervenes with the cylinder body 2. Rigidly connected. Here, a disc-shaped nylon resin was used to form the shaft coupling. In the shaft coupling shown here, the cylinder body 1 and the cylinder body 2 are all arranged concentrically, but in some cases, the cylinder body 1 and the cylinder body 2 may be arranged separately from each other. It is possible.
【００１１】かかる合成樹脂盤体４は、各筒体１、２を
所定位置に設定する機能をもつと共に、回転使用時にお
いて駆動側の軸に連結される筒体１と被駆動側の軸に連
結される筒体２間の引張り力を伝達する機能をなすもの
であり、従来の軸継手における抗張体の機能を奏するも
のである。そして、この軸継手の質量−バネ系は前記し
た図７のように構成され、共振のおそれが取り除かれた
ものである。尚、この例にあって、筒体１を駆動側とし
て説明するが、筒体２を駆動側にしてよいことは勿論で
ある。The synthetic resin board 4 has a function of setting the cylinders 1 and 2 at predetermined positions, and the cylinder 1 and the driven shaft are connected to the drive shaft during rotation. It has a function of transmitting a tensile force between the connected cylindrical bodies 2, and has a function of a tensile body in a conventional shaft coupling. The mass-spring system of this shaft coupling is constructed as shown in FIG. 7 described above, and the risk of resonance is eliminated. In this example, the cylinder 1 is described as the driving side, but it goes without saying that the cylinder 2 may be the driving side.
【００１２】本軸継手の製法としては、まず筒体１の周
囲にゴム弾性体３を加硫接着によって一体化し、更に、
筒体２と共に盤体４を形成する型内の位置にセットし、
次いで合成樹脂を射出成形する手段によって各要素を一
体化することが一般的であるが、合成樹脂盤体４を先に
形成し、盤体４に設けられた孔５内に、筒体１を囲んだ
ゴム弾性体３及び筒体２を圧入・接着することも可能で
ある。As a method of manufacturing this shaft coupling, first, the rubber elastic body 3 is integrated around the cylindrical body 1 by vulcanization adhesion, and further,
Set in a position in the mold that forms the board 4 together with the cylinder 2,
Then, it is general that the respective elements are integrated by means of injection molding a synthetic resin. However, the synthetic resin board 4 is formed first, and the cylindrical body 1 is inserted into the hole 5 provided in the board 4. It is also possible to press fit and bond the enclosed rubber elastic body 3 and the cylindrical body 2.
【００１３】この図例にあっては、ゴム弾性体３の外周
と合成樹脂盤体４の孔５との関係は真円状で接している
が、両者の接面が必ずしも真円である必要はなく、例え
ば、孔５が合成樹脂盤体４の中央より放射方向に長軸が
そろえられる楕円であってもよい。又、孔５が楕円の長
軸を周方向に向けて配置される場合には、立ち上がりが
緩やかなトルクの伝達特性を有する軸継手となるもので
ある。In this example, the relationship between the outer circumference of the rubber elastic body 3 and the hole 5 of the synthetic resin board 4 is in contact with each other in a perfect circle, but the contact surfaces of both are not necessarily perfect circles. Alternatively, for example, the hole 5 may be an ellipse whose major axes are aligned in the radial direction from the center of the synthetic resin board 4. Further, when the hole 5 is arranged with the major axis of the ellipse oriented in the circumferential direction, the shaft coupling has a gradual rising torque transmission characteristic.
【００１４】図３は本発明の軸継手の第２実施例におけ
る正面図であって、図４はそのＢ−Ｂ線での断面図であ
る。図にあって、筒体２は合成樹脂盤体４とリジッドに
連結されるが、筒体１ではこれを囲むゴム弾性体３に、
円周の接線方向にスグリ６を設けたものである。スグリ
を設けることにより、ねじりバネ定数を低くすることが
できる。尚、筒体１及び２は、ゴム弾性体３及び合成樹
脂盤体４の孔５内よりの抜け出しを防止するため、中央
に膨らみ部７を形成したものである。FIG. 3 is a front view of a shaft coupling according to a second embodiment of the present invention, and FIG. 4 is a sectional view taken along line BB thereof. In the figure, the cylindrical body 2 is rigidly connected to the synthetic resin board 4, but in the cylindrical body 1, a rubber elastic body 3 surrounding the cylindrical body 2 is provided.
The currant 6 is provided in the tangential direction of the circumference. By providing the currant, the torsion spring constant can be lowered. The cylindrical bodies 1 and 2 have a bulge portion 7 formed at the center thereof in order to prevent the rubber elastic body 3 and the synthetic resin disc body 4 from coming out of the hole 5.
【００１５】図５は本発明の軸継手の第３実施例を示す
正面図であって、図６はそのＣ−Ｃ線での断面図であ
る。これは筒体２は前例と同様に合成樹脂盤体４にリジ
ッドに連結されているが、駆動軸側の筒体１を囲むゴム
弾性体３は、合成樹脂盤体４に完全には包囲されておら
ず、放射方向にこの盤体４が存在しない例である。FIG. 5 is a front view showing a third embodiment of the shaft coupling of the present invention, and FIG. 6 is a sectional view taken along the line CC. The cylindrical body 2 is rigidly connected to the synthetic resin board 4 as in the previous example, but the rubber elastic body 3 surrounding the driving shaft side cylinder 1 is completely surrounded by the synthetic resin board 4. This is an example in which the board 4 does not exist in the radial direction.
【００１６】即ち、実施例１の場合には、この部分にも
合成樹脂盤体４の比較的薄い部分が存在したが、この例
ではその薄い部分が除かれている。従って、この部分で
の合成樹脂盤体４の割れ等が生じる恐れがなく、合成樹
脂盤体４の耐久性がアップすることになる。かかる軸継
手の特徴は、特に軸継手にこじり力が発生した場合に威
力を発揮する。又、限られたスペ−スの中でゴムのボリ
ュ−ムを増して、十分柔らかいバネ特性を得ることも可
能であり、大きな特徴をもっている。That is, in the case of the first embodiment, a relatively thin portion of the synthetic resin board 4 also exists in this portion, but in this example, the thin portion is removed. Therefore, there is no possibility that the synthetic resin board 4 will be cracked at this portion, and the durability of the synthetic resin board 4 will be improved. The feature of such a shaft joint is particularly effective when a twisting force is generated in the shaft joint. Further, it is possible to increase the rubber volume in a limited space to obtain a sufficiently soft spring characteristic, which is a great feature.
【００１７】[0017]
【発明の効果】本発明は筒体間にかかる張力（或いは圧
縮力）を合成樹脂盤体が受けるものであって、これは従
来の繊維コ−ドを何回も巻き掛けして構成する抗張体よ
りも単一材料であるが故に高精度化が図れ、かつ、ゴム
に比べて樹脂材料であるがために飛翔体等の接触に対し
て強度があり、更にはオゾン、油等にも強い材質が選択
でき耐久性も向上することとなったものである。そし
て、一方の筒体と合成樹脂盤体とがリジッドに連結され
ているため、共振の発生もなく、例えば、自動車用の駆
動側ヨ−クとプロペラシャフト又はプロペラシャフトと
デイファレンシャル側との接合部に特に適する。According to the present invention, the synthetic resin board receives the tension (or compression) applied between the cylinders, which is formed by winding a conventional fiber cord many times. Since it is a single material rather than a stretcher, it can achieve higher precision, and because it is a resin material compared to rubber, it has strength against contact with flying objects, etc. It is possible to select a strong material and improve durability. Since one cylinder and the synthetic resin board are rigidly connected to each other, resonance does not occur, and for example, a drive side yoke and a propeller shaft or a propeller shaft and a differential side for an automobile are not generated. Particularly suitable for joints.
【図１】図１は本発明の軸継手の第１実施例を示す正面
図である。FIG. 1 is a front view showing a first embodiment of a shaft coupling of the present invention.
【図２】図２は図１の軸継手のＡ−Ａ線での断面図であ
る。2 is a cross-sectional view of the shaft coupling of FIG. 1 taken along the line AA.
【図３】図３は本発明の軸継手の第２実施例を示す正面
図である。FIG. 3 is a front view showing a second embodiment of the shaft coupling of the present invention.
【図４】図４は図３の軸継手のＢ−Ｂ線での断面図であ
る。4 is a cross-sectional view of the shaft coupling of FIG. 3 taken along the line BB.
【図５】図５は本発明の軸継手の第３実施例を示す正面
図である。FIG. 5 is a front view showing a third embodiment of the shaft coupling of the present invention.
【図６】図６は図５の軸継手のＣ−Ｃ線での断面図であ
る。6 is a cross-sectional view of the shaft coupling of FIG. 5 taken along the line C-C.
【図７】図７は本発明の軸継手における質量−バネ系を
示すモデル図である。FIG. 7 is a model diagram showing a mass-spring system in the shaft coupling of the present invention.
【図８】図８は従来からある軸継手の正面図である。FIG. 8 is a front view of a conventional shaft coupling.
【図９】図９は本発明者が既に提案した軸継手の正面図
である。FIG. 9 is a front view of a shaft coupling already proposed by the present inventor.
【図１０】図１０は図９にて示す軸継手における質量−
バネ系を示すモデル図である。FIG. 10 is a mass chart of the shaft coupling shown in FIG.
It is a model figure which shows a spring system.
１、２、１１、１２‥‥筒体、 ３、１３‥‥ゴム弾性体、 ４、１４‥‥合成樹脂盤体、 ５‥‥合成樹脂盤体に設けられた孔、 ６‥‥スグリ。 1, 2, 11, 12 ... Cylindrical body, 3, 13 ... Rubber elastic body, 4, 14 ... Synthetic resin board, 5 ... Holes provided in the synthetic resin board, 6 ... Currant.
Claims (1)
付けられて動力を伝達する盤状の軸継手であって、駆動
側の軸と連結される複数の筒体１を同心円上に等距離を
もって配列し、被駆動側の軸と連結される複数の筒体２
を同心円上に等距離をもち、かつ前記筒体１と交互に配
列してなり、前記筒体１又は２の一方をゴム弾性体で囲
繞すると共に、これらを合成樹脂盤体にて連結したこと
を特徴とする軸継手。1. A disc-shaped shaft coupling mounted between a drive-side shaft end and a driven-side shaft end for transmitting power, wherein a plurality of cylindrical bodies 1 connected to the drive-side shaft are concentric. A plurality of cylinders 2 which are arranged equidistantly above and are connected to the driven shaft.
Are equidistantly arranged on concentric circles and are arranged alternately with the cylindrical body 1, one of the cylindrical bodies 1 or 2 is surrounded by a rubber elastic body, and these are connected by a synthetic resin board. A shaft coupling characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4272291A JPH0694044A (en) | 1992-09-16 | 1992-09-16 | Shaft coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4272291A JPH0694044A (en) | 1992-09-16 | 1992-09-16 | Shaft coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0694044A true JPH0694044A (en) | 1994-04-05 |
Family
ID=17511817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4272291A Pending JPH0694044A (en) | 1992-09-16 | 1992-09-16 | Shaft coupling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694044A (en) |
-
1992
- 1992-09-16 JP JP4272291A patent/JPH0694044A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |