JPS62113917A - Universal coupling - Google Patents

Abstract

PURPOSE:To remove backlash without increasing the working accuracy by providing a recess and projection engaging portion for individually transmitting driving torque of clockwise and counter-clockwise rotation, and closely contacting the projecting portion and the recess portion by an elastic member on receiving corresponding driving torque. CONSTITUTION:Projecting portions 3a, 3b and 4a, 4b of face members 3, 4 are inserted in inserting portions 5k, 5l and 5m, 5n of an intermediate face member 5 from both faces thereof and connected to each other. In this case, the intermediate face member 5 is automatically aligned, so that the projecting portions 3a, 3b, 4a, 4b are always pressed to a step portion of the intermediate face member 5 by elastic force of a pressing metal 50 tightened by a bolt 52 through a coiled spring 51. Even if the axes of rotary shafts 1, 2 are not aligned with each other, it can be absorbed by a margin in length of the step portion of the intermediate face member 5 and a change in contact angle between the face members.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は回転軸の軸継手部に設けた凸凹係合部が弾性部
材で密接されることによりバンクラッシュをな（した、
例えば、試験装置等の軸系に使用される自在軸継手に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention prevents bank lash by bringing the convex-concave engaging portion provided in the shaft joint of a rotating shaft into close contact with an elastic member.
For example, it relates to a universal joint used in a shaft system of a testing device or the like.

〔従来の技術〕[Conventional technology]

従来の自在軸継手として、例えば、カルダン継手、等速
継手、オルダム継手等がある。Examples of conventional universal joints include Cardan joints, constant velocity joints, and Oldham joints.

第３図はオルダム継手とそれを用いた試験装置の例を示
す。この軸継手は回転軸１および２の端部に対向して取
付けられ夫々凹形の溝部３ｃおよび４ｃを有する面部材
３および４と、面部材３と４との間にあり両面に夫々直
交して設けられた凸部の突起部５ｓおよび５仁を有する
中間面部材５よりなる。中間面部材５の突起部５ｓおよ
び５ｔは夫々面部材３および４の溝部３ｃおよび４ｃに
嵌合して回転軸ｌと２が連結される。Figure 3 shows an example of an Oldham joint and a test device using it. This shaft joint is installed between the surface members 3 and 4, which are mounted opposite to the ends of the rotating shafts 1 and 2 and have concave grooves 3c and 4c, respectively, and is perpendicular to both surfaces. It consists of an intermediate surface member 5 having a protrusion 5s and a protrusion 5s provided as a convex portion. The protrusions 5s and 5t of the intermediate surface member 5 fit into the grooves 3c and 4c of the surface members 3 and 4, respectively, so that the rotating shafts 1 and 2 are connected.

第３図はこの軸継手を用いた試験装置、例えば、トラン
スミッションの試験装置であり、回転軸１の側には回転
軸１ａを回転駆動する駆動モータ７と、回転軸１ａの回
転数を所定の速度に低減して回転軸１に伝える減速機６
がつながれている。回転軸２の側には被試験体である一
方向クラッチ８がつながれ、一方向クラッチ８の他方は
トーション軸２ａにつながれている。一方、他の駆動部
（図示せず）によって駆動される回転軸１１の軸端１１
ａにホイール１０が取付けられ、このホイール１０の円
周に近い半径上にある回転支点１゜ａとトーション軸２
ａの軸端２ｂは、回転支点９Ｃでつながれた２連のリン
ク９ａ、９ｂにより連結されており、リンク９ａは軸端
２ｂにて回転軸２ａに固着されている。FIG. 3 shows a test device using this shaft joint, for example, a transmission test device. On the rotating shaft 1 side, there is a drive motor 7 that rotationally drives the rotating shaft 1a, and a drive motor 7 that rotates the rotating shaft 1a at a predetermined rotation speed. Reducer 6 that reduces the speed and transmits it to the rotating shaft 1
are connected. A one-way clutch 8, which is a test object, is connected to the rotating shaft 2 side, and the other end of the one-way clutch 8 is connected to the torsion shaft 2a. On the other hand, the shaft end 11 of the rotating shaft 11 is driven by another drive unit (not shown).
A wheel 10 is attached to the wheel 10, and a rotation fulcrum 1°a and a torsion shaft 2 are located on a radius close to the circumference of the wheel 10.
The shaft end 2b of the shaft a is connected by two links 9a and 9b connected at a rotation fulcrum 9C, and the link 9a is fixed to the rotation shaft 2a at the shaft end 2b.

以上の構成において、駆動モータ７が回転軸１ａを回転
させると、減速機６により回転軸１は一方向に所定の回
転数で回転する。この回転は前記の軸継手により回転軸
２に伝達される。一方、ホイール１０が駆動源（図示せ
ず）によって一方向に回転すると、リンク９ａ、９ｂと
のリンク結合により回転軸２ａが正逆両方向にある角度
内にて交互に揺動する。一方向クラッチ８がトルク伝達
方向の回転を受けたときは回転軸２にトルクを伝達し、
それと逆方向の回転を受けたときはトルクの伝達を行わ
ない。In the above configuration, when the drive motor 7 rotates the rotary shaft 1a, the rotary shaft 1 is rotated in one direction at a predetermined number of rotations by the reducer 6. This rotation is transmitted to the rotating shaft 2 by the aforementioned shaft joint. On the other hand, when the wheel 10 is rotated in one direction by a drive source (not shown), the rotation shaft 2a alternately swings within a certain angle in both forward and reverse directions due to the link connection with the links 9a and 9b. When the one-way clutch 8 receives rotation in the torque transmission direction, it transmits torque to the rotating shaft 2,
When the rotation is in the opposite direction, no torque is transmitted.

第４図はトルク伝達の状態を示し、Ａは回転軸２側、Ｂ
は回転軸１例のトルクの変化である。Ａにおいて、ＴＩ
（正）はトーション軸２ａの方から継手部分を駆動する
トルクであり、Ｔ２（負）は減速機６の方から駆動され
るトルクである。ＢはＡと対応するものであり、Ｔ、（
正）は減速機６より継手部分を駆動し、Ｔ４（負）は減
速機６が駆動されることになる。Figure 4 shows the state of torque transmission, where A is the rotating shaft 2 side, B
is the change in torque of one example of the rotating shaft. In A, T.I.
T2 (positive) is the torque that drives the joint portion from the torsion shaft 2a, and T2 (negative) is the torque that is driven from the reducer 6. B corresponds to A, and T, (
T4 (positive) causes the reducer 6 to drive the joint portion, and T4 (negative) causes the reducer 6 to be driven.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、従来の自在軸継手にあっては、第４図のＡ、Ｂ
で示すように交互に回され、しかも、減速機６で決まる
回転数で回るため、凸凹係合部にバックラッシュがある
と継手部分で速度が変化し、試験結果の精度を低下させ
るという不都合がある。また、バンクラッシュをなくす
るまで係合部の工作精度をあげると高価になるという欠
点がある。However, in the conventional universal joint, A and B in Fig.
As shown in , they are rotated alternately and at a rotation speed determined by the reducer 6, so if there is backlash in the convex-concave engagement part, the speed will change in the joint part, which is an inconvenience that will reduce the accuracy of the test results. be. In addition, there is a drawback that increasing the machining accuracy of the engaging portion until bank lash is eliminated increases the cost.

〔問題点を解決するための手段および作用〕本発明は上
記に鑑みてなされたものであり、工作精度をあげること
によるコストアップを招かずにバンクラッシュをな（す
るため、時計方向および反時計方向の駆動トルクを別々
に伝達する凸凹係合部を設け、それぞれ対応する駆動ト
ルクを受けるとき弾性部材によって凸部と凹部を密接す
るようにした自在軸継手を提供するものである。[Means and effects for solving the problem] The present invention has been made in view of the above, and in order to eliminate bank rash without increasing the cost due to increased machining accuracy, it is possible to The present invention provides a universal shaft joint in which concave and convex engaging portions for transmitting driving torques in different directions are provided, and the convex portion and the concave portion are brought into close contact with each other by an elastic member when receiving the corresponding driving torques.

〔実施例〕〔Example〕

以下、本発明による自在軸継手を詳細に説明する。第１
図、第２図（イ）は本発明の一実施例を示し、第３図と
同一の部分は同一の引用数字で示したので重複する説明
は省略するが、第１図に示す面部材３および４は夫々突
出した突起部３ａ、３ｂおよび４ａ、４ｂを有し、中間
面部材５は、例えば、第２図（イ）に示す如く前記突起
部を抑えるため階段状にした一辺とそれと同形の対向辺
よりなる２辺にて形成されている。一つの突起部４ａの
挿入部５ｋを形成する階段部５ａ、５ｂ、５Ｃと、突起
部４ａを抑える抑え金具５０と、その抑え金具５０を弾
性的に抑えるコイルスプリング５１と、それを締付ける
ボルト５２よりなる。他の突起部３ｂ、４ａ、４ｂの挿
入部５１，５ｍ、５ｎについても同様とする。Hereinafter, the universal joint according to the present invention will be explained in detail. 1st
2A and 2B show an embodiment of the present invention, and the same parts as in FIG. and 4 have protrusions 3a, 3b and 4a, 4b, respectively, and the intermediate surface member 5 has, for example, one side that is stepped in shape to suppress the protrusions as shown in FIG. It is formed by two opposing sides. Step portions 5a, 5b, and 5C forming an insertion portion 5k of one protrusion 4a, a holding fitting 50 that suppresses the protrusion 4a, a coil spring 51 that elastically suppresses the holding fitting 50, and a bolt 52 that tightens the holding fitting 50. It becomes more. The same applies to the insertion portions 51, 5m, and 5n of the other projections 3b, 4a, and 4b.

以上の構成において、面部材３の突起部３ａ、３ｂと面
部材４の突起部４ａ、４ｂは中間面部材５の挿入部５ｋ
、５１および５ｍ、５ｎに両面から差込まれて連結され
る。この場合、中間面部材５は自動調芯されるため、工
作精度を高めなくとも、突起部３ａ、３ｂ、４ａ、４ｂ
は弾性力によって常に階段部（例えば、５ａの部分）に
密着してセットされる。In the above configuration, the protrusions 3a and 3b of the surface member 3 and the protrusions 4a and 4b of the surface member 4 are connected to the insertion portion 5k of the intermediate surface member 5.
, 51 and 5m, 5n from both sides to be connected. In this case, since the intermediate surface member 5 is self-aligned, the protrusions 3a, 3b, 4a, 4b can be adjusted without increasing the machining accuracy.
is always set in close contact with the staircase portion (for example, the portion 5a) due to elastic force.

突起部の抑えを面部材３の突起部３ａについて示すと、
中間面部材５の階段部５ａおよび抑え金具５０に抑えら
れ、抑え金具５０はコイルスプリング５１を介してポル
ト５２によって締付けられる。これは他の突起部３ｂお
よび対向する面部材４の突起部４ａ、４ｂについても同
様である。When the suppression of the protrusion is shown for the protrusion 3a of the surface member 3,
It is held down by the step portion 5a of the intermediate surface member 5 and the holding fitting 50, and the holding fitting 50 is tightened by the port 52 via the coil spring 51. This also applies to the other protrusions 3b and the protrusions 4a and 4b of the opposing surface member 4.

回転軸１と２の軸心が一致しないとき、あるいは、軸心
がある角度をもって交わる場合でも、例えば、５ａで示
される階段部の長さの余裕や中間面部材と一対の面部材
の接触角度の変化等により吸収出来る。When the axes of the rotating shafts 1 and 2 do not coincide, or even when the axes intersect at a certain angle, for example, the length margin of the staircase section shown by 5a or the contact angle between the intermediate surface member and the pair of surface members It can be absorbed by changes in

なお、上記の実施例においては、一対の面部材の突起部
を抑え金具によりコイルスプリングを挟んで締付けて間
隙をなくする例を示したが、第２図（ロ）に示す如く中
間面部材の一面を５ｅ、５ｆ、５ｇのように階段状とし
面部材の突起部３ａを仮バネ５３が常に抑えつける状態
にねじ５４によって固定するようにしてもよく、第２図
（ニ）に示す如く面部材の突起部３の形状を方形断面の
ものとし第２図（ロ）と同様板バネ５３にて抑えるよう
にしてもよく、第２図（ハ）に示す如く中〜間の一面を
５ｈ、５１のように階段状としその近傍に５ｈに平行し
て面部材の突起部３ａの受入部としてＵ字溝形の受入部
５ｋを設け、階段部５ｈに設けた締付は用孔５１から受
入部５ｋに挿入された面部材の突起部３ａを抑えピース
５５によりコイルスプリング５６を挟んでネジ５７を締
付けて抑えるようにしてもよい。In the above embodiment, an example was shown in which the protrusions of a pair of surface members are held down and the coil springs are clamped using metal fittings to eliminate the gap, but as shown in FIG. One surface may have a step-like shape as shown in FIG. The protrusion 3 of the member may have a rectangular cross-section and be held down by a leaf spring 53 as shown in FIG. 2(B), and as shown in FIG. 51, and a U-shaped groove-shaped receiving part 5k is provided in parallel with 5h in the vicinity thereof as a receiving part for the protruding part 3a of the surface member, and the fastening provided in the stepped part 5h is received from the hole 51. Alternatively, the protrusion 3a of the surface member inserted into the portion 5k may be held down, and the coil spring 56 may be held between the pieces 55 and the screw 57 may be tightened.

また、上記実施例では一対の面部材側に突起部を、中間
面部材側に受入部を設けたが、逆に一対の面部材側に受
入部を中間面部材側に突起部を設けてもよい。Further, in the above embodiment, the projections were provided on the side of the pair of surface members and the receiving portions were provided on the side of the intermediate surface member, but conversely, the receiving portions may be provided on the side of the pair of surface members and the projections on the side of the intermediate surface member. good.

〔発明の効果〕〔Effect of the invention〕

以上説明した通り、本発明の自在軸継手によれば、時計
および反時計の両方向の駆動トルクを別々に伝達する凸
凹係合部を設け、それぞれ対応する駆動トルクを受ける
とき弾性部材によって凸部と凹部を密接するようにした
ため、工作精度をあげることによるコストアップを招か
ずにバックラッシュをなくすることができる。As explained above, according to the universal joint of the present invention, the concave and convex engagement portions that transmit clockwise and counterclockwise driving torques separately are provided, and when receiving the respective driving torques, the elastic member engages the convex portions. Since the concave portions are placed in close contact with each other, backlash can be eliminated without increasing the cost due to increased machining accuracy.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明による自在軸継手とそれを適用した試験
装置を示す説明図。第２図（イ）〜（ニ）は本発明の自
在軸継手の構成を示す説明図。第３図は従来の自在軸継
手とそれを適用した試験装置を示す説明図。第４図は第
３図に示す試験装置の作用を示す説明図。 符号の説明 １．１ａ−・−・−・回転軸　　２．２ａ−・−回転軸
２　ｂ　−一−−・・−−−−一軸端　　　　　３．４
−・−−−−−−−一面部材３ａ、３ｂ、４ａ、４　ｂ
　−−−−−−一突起部３ｃ、４ｃ−・・・−・−溝部
　　　５−・・−・・中間面部材５ａ〜５ｒ−・−一−
−−階段部　　５１・−・−・・−・−締付は用孔５　
ｋ　〜５　ｎ−・−−−−一受入部　　５ｓ、５を一突
起部５０−・−・・・・−抑え金具FIG. 1 is an explanatory diagram showing a universal joint according to the present invention and a test device to which the same is applied. FIGS. 2(A) to 2(D) are explanatory diagrams showing the configuration of the universal joint of the present invention. FIG. 3 is an explanatory diagram showing a conventional universal joint and a test device to which it is applied. FIG. 4 is an explanatory diagram showing the operation of the test device shown in FIG. 3. Explanation of symbols 1.1a--Rotating shaft 2.2a--Rotating shaft 2 b -1--...One shaft end 3.4
-・------One side member 3a, 3b, 4a, 4b
-------One protrusion 3c, 4c---Groove part 5---Intermediate surface member 5a to 5r---1-
--- Stairs section 51・-・-・・−・-Tightening hole 5
k ~5 n-・-----One receiving part 5s, 5 one protruding part 50--------Pressure metal fitting

Claims (1)

【特許請求の範囲】 一つの端部と該端部に対向する他の軸の端 部に夫々設けられた面部材と、前記双方の面部材間に位
置する中間面部材より構成され前記面部材と前記中間面
部材に形成された凸凹係合部によって前記軸間で駆動ト
ルクを伝達する自在軸継手において、 前記凸凹係合部は時計方向の駆動トルクを 伝達する第１の係合部と、反時計方向の駆動トルクを伝
達する第２の係合部を有し、前記第１および第２の係合
部は対応する方向の駆動トルクを受けるとき弾性部材に
よって凸部が凹部に密接されることを特徴とする自在軸
継手。[Scope of Claims] The surface member is composed of a surface member provided at one end and an end of another shaft opposite to the end, and an intermediate surface member located between both of the surface members. and a universal shaft joint that transmits driving torque between the shafts by a convex-concave engaging portion formed on the intermediate surface member, wherein the concave-concave engaging portion includes a first engaging portion that transmits clockwise driving torque; It has a second engaging part that transmits a driving torque in a counterclockwise direction, and when the first and second engaging parts receive the driving torque in the corresponding direction, the convex part is brought into close contact with the concave part by an elastic member. A universal joint characterized by: