JP2632641B2 - Universal joint neck sag prevention device - Google Patents
Universal joint neck sag prevention deviceInfo
- Publication number
- JP2632641B2 JP2632641B2 JP6041331A JP4133194A JP2632641B2 JP 2632641 B2 JP2632641 B2 JP 2632641B2 JP 6041331 A JP6041331 A JP 6041331A JP 4133194 A JP4133194 A JP 4133194A JP 2632641 B2 JP2632641 B2 JP 2632641B2
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- sliding bush
- hole
- driven shaft
- universal joint
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
- F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
- F16D3/41—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ユニバーサルジョイン
トに関し、特に、その首垂れ防止装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint and, more particularly, to a device for preventing a head from hanging.
【０００２】[0002]
【従来の技術】駆動軸と従動軸とを連結する場合、それ
らの軸心が必ずしも一致しているとは限らないので、直
接、軸継手やフランジ継手で結合すると無理がかかり、
破損に至る。そこで、ユニバーサルジョイントを介在さ
せることにより、軸心のずれを吸収し、無理なく動力を
伝達することができる。2. Description of the Related Art When connecting a drive shaft and a driven shaft, their shaft centers do not always coincide with each other.
Leading to damage. Therefore, by disposing the universal joint, the displacement of the shaft center can be absorbed and the power can be transmitted without difficulty.
【０００３】ユニバーサルジョイントは、それが有する
重要な機能の一つとして、十字軸部を中心にある角度の
範囲で曲折し、自由に首振り運動ができる構造となって
いることは周知である。そして、十字軸を介して回動自
在に結合された一対のヨークの一方を基準にしたとき、
他方のヨークが傾き得る最大角度α1は、一般的にその
ユニバーサルジョイントの基本設計によって予め決定さ
れている。また、それが実際に使用される動作時の首振
り角度α2は使用設備の条件によって決められる。ここ
で、α1＞α2であることは言うまでもない。As one of the important functions of the universal joint, it is well known that the universal joint has a structure in which it can bend around a cross shaft within a certain angle range and freely swing. And, with reference to one of a pair of yokes rotatably coupled via a cross shaft,
The maximum angle α 1 at which the other yoke can tilt is generally predetermined by the basic design of the universal joint. In addition, the swing angle α 2 in the operation in which it is actually used is determined according to the conditions of the equipment used. Here, it goes without saying that α 1 > α 2 .
【０００４】いま、駆動軸と従動軸とを、ユニバーサル
ジョイントを介して連結した場合を考える。従動機、例
えば金属の圧延ロールを交換する場合、ロール軸をユニ
バーサルジョイントのエンドヨークから取り外すと、エ
ンドヨークは支えるものがなくなるので、その自重によ
り首垂れを起こし、他方のヨークの先端部に当接して止
まる。その際、ユニバーサルジョイントが大形のもので
あると、エンドヨーク自体も相当な重量になるので、ヨ
ークに大きな力で衝突し、その衝撃によって十字軸やベ
アリングにダメージを与えることになる。一方、ロール
交換のために新たなロールの軸をエンドヨークに挿入す
る場合は、重量物であるエンドヨークを持ち上げなけれ
ばならず、その作業が大変である。Now, consider a case where a drive shaft and a driven shaft are connected via a universal joint. When replacing the follower, for example, a metal rolling roll, if the roll shaft is removed from the end yoke of the universal joint, the end yoke has no support, and its own weight causes the head to hang down and hit the tip of the other yoke. Stop in contact. At that time, if the universal joint is large, the end yoke itself will be quite heavy, so it will collide with a large force on the yoke, and the impact will damage the cross shaft and the bearing. On the other hand, when a new roll shaft is inserted into the end yoke for roll replacement, the end yoke, which is a heavy object, must be lifted, and the operation is difficult.
【０００５】そこで一般的には、駆動軸に連結されたセ
ンターヨークの重さを支えるための支持装置(スピンド
ルキャリア)を設置するのに加え、エンドヨークである
カップリングの軸心保持のための装置(カップリングサ
ポート)を設置する。中には、それらの両装置を兼備し
た複雑なものを、圧延機取付壁面に設置するものもあ
る。Therefore, generally, in addition to installing a support device (spindle carrier) for supporting the weight of the center yoke connected to the drive shaft, the end yoke is used to hold the axial center of the coupling. Install equipment (coupling support). In some cases, a complex device having both of these devices is installed on a wall for mounting a rolling mill.
【０００６】従動軸を抜き去ったときのエンドヨークの
首垂れを防止する装置は、これまで種々提案されてい
る。例えば、一方のヨーク体の内部にロッド駆動装置を
設置し、ロッドを突出させてその先端を他方のヨーク側
に設けたロッド受け部材に挿入して首垂れを防止するも
の(実公昭56−22027号公報)や、十字軸の中央に設けた
孔にロッド駆動装置を設置し、ロッドを突出させて、一
方のヨークに設けた補強部材の孔に通し、他方のヨーク
に設けたロッド受け部材に挿入して首垂れを防止するも
の(実公昭56−22028号公報)等がある。Various devices have been proposed to prevent hanging of the end yoke when the driven shaft is pulled out. For example, a rod drive device is installed inside one yoke body, and the rod is protruded and its tip is inserted into a rod receiving member provided on the other yoke side to prevent drooping (Japanese Utility Model Publication No. 56-22027). And a rod driving device is installed in a hole provided in the center of the cross shaft, the rod is protruded, passed through a hole in a reinforcing member provided in one yoke, and a rod receiving member provided in the other yoke. There is one that inserts to prevent neck drooping (Japanese Utility Model Publication No. 56-22028).
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来例は、いずれもロッド駆動装置として油圧シリンダが
用いられており、構造が複雑であるばかりでなく、僅か
な軸心のずれ(ロッドにより固定されたカップリングの
軸心とそれに挿入される新ロールの軸心のずれ)によっ
てロッドに無理がかかり、故障や破損を起こすという問
題があった、本発明は、上記従来技術の問題点を解決し
ようとするもので、構造が単純であり、しかも軸心のず
れに対しても十分に順応して破損を起こすことのないユ
ニバーサルジョイントの首垂れ防止装置を提供すること
を目的とする。However, in each of the above-mentioned prior arts, a hydraulic cylinder is used as a rod driving device, which not only has a complicated structure, but also has a slight axial displacement (fixed by a rod). The present invention solves the above-mentioned problems of the prior art. It is an object of the present invention to provide a universal joint drooping prevention device which has a simple structure and is sufficiently adapted to the deviation of the axial center and does not cause breakage.
【０００８】[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、本発明は、駆動軸に連結された第１のヨークの二又
先端部間に差し渡され中央部に突出したセンタポールを
有する架橋部と、略凸状の断面形状で底面に穴を有し、
この穴がセンタポールに摺動自在に嵌合された摺動ブッ
シュと、摺動ブッシュをセンタポールから押し出す方向
に付勢するバネ部材と、従動軸挿入穴を有する第２のヨ
ークの二又間底部と従動軸挿入穴奥部とを貫通して設け
られ摺動ブッシュの凸状中央突出部が遊挿される貫通孔
と、摺動ブッシュの凸状中央突出部の基部周辺から略垂
直方向に延びた当接面と、前記貫通孔の周辺に設けられ
凸状中央突出部が貫通孔に十分深く挿入されたとき当接
面が当接する当接受面とから構成されている。In order to achieve the above-mentioned object, the present invention has a center pole projecting from a forked portion of a first yoke connected to a drive shaft. a bridge portion has a hole in the bottom with a substantially convex cross-sectional shape,
A sliding bush whose hole is slidably fitted to the center pole, a spring member for urging the sliding bush in a direction to push the sliding bush out of the center pole, and a fork between a second yoke having a driven shaft insertion hole. A through hole is provided through the bottom portion and the inner portion of the driven shaft insertion hole, into which the convex central protruding portion of the sliding bush is loosely inserted.
It comprises a contact surface extending in the vertical direction, and a contact receiving surface provided around the through hole and contacting the contact surface when the convex central protrusion is inserted sufficiently deep into the through hole.
【０００９】[0009]
【作用】上記構成によれば、第２のヨークの従動軸挿入
穴に従動軸が挿入されていないときは、摺動ブッシュが
バネ部材により押されて当接面が当接受面に圧接し、第
２のヨークが第１のヨークに対して固定されて首垂れが
防止される。一方、第２のヨークの従動軸挿入穴に従動
軸が挿入されたときは、その従動軸の先端がバネ部材の
付勢力に抗して摺動ブッシュの凸状中央突出部を押し、
当接面が当接受面から離れて第２のヨークが第１のヨー
クに対し所要角度の首振りを許容される。According to the above construction, when the driven shaft is not inserted into the driven shaft insertion hole of the second yoke, the sliding bush is pushed by the spring member so that the contact surface comes into pressure contact with the contact receiving surface. The second yoke is fixed to the first yoke to prevent hanging of the neck. On the other hand, when the driven shaft is inserted into the driven shaft insertion hole of the second yoke, the distal end of the driven shaft pushes the convex center projecting portion of the sliding bush against the urging force of the spring member,
The contact surface is separated from the contact receiving surface, and the second yoke is allowed to swing at a required angle with respect to the first yoke.
【００１０】[0010]
【実施例】以下、図面を参照して実施例を詳細に説明す
る。図１は、本発明の一実施例を示したもので、１は中
間軸部１aを介して図示しない駆動軸に連結された第１
のヨーク、２は従動軸に連結されるカップリングを有す
る第２のヨーク、３は第１のヨーク１と第２のヨーク２
の間に介在する十字軸、４は十字軸３の軸受としてのベ
アリングであり、以上の１〜４により、基本的にユニバ
ーサルジョイントが構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. Reference numeral 1 denotes a first shaft connected to a drive shaft (not shown) via an intermediate shaft 1a.
2 is a second yoke having a coupling connected to a driven shaft, 3 is a first yoke 1 and a second yoke 2
The cross shaft 4 interposed therebetween is a bearing as a bearing for the cross shaft 3, and a universal joint is basically configured by the above 1 to 4.
【００１１】５は、図３にさらに詳細に示したように、
第１のヨーク１の二又先端部間に差し渡され中央部に突
出したセンタポール６有する架橋部、７は略凸状の底面
に穴８を有し、この穴８がセンタポール６に摺動自在に
嵌合された摺動ブッシュ、９は摺動ブッシュ７をセンタ
ポール６から押し出す方向に付勢するバネ部材である。
架橋部５は、ここでは、ベアリング４を固定する第１の
ヨーク１のキャップ部と一体的に鋳造されたものであ
る。また、摺動ブッシュ７には穴８とは反対側に凸状中
央突出部10が設けられている。5 is, as shown in more detail in FIG.
The bridging portion 7 having a center pole 6 extending between the forked ends of the first yoke 1 and projecting at the center thereof has a hole 8 in a substantially convex bottom surface. The sliding bush 9 movably fitted therein is a spring member that urges the sliding bush 7 in a direction of pushing the sliding bush 7 out of the center pole 6.
Here, the bridge portion 5 is integrally cast with the cap portion of the first yoke 1 for fixing the bearing 4. The sliding bush 7 is provided with a convex central protruding portion 10 on the side opposite to the hole 8.
【００１２】１１は従動軸挿入穴１２を有する第２のヨ
ーク２の二又間底部と従動軸挿入穴奥部とを貫通して設
けられ摺動ブッシュ７の凸状中央突出部１０が遊挿され
る貫通孔、１３は摺動ブッシュ７の凸状中央突出部１０
の基部周辺から略垂直方向に延びた当接面、１４は貫通
孔１１の周辺に設けられ凸状中央突出部が貫通孔に十分
深く挿入されたとき当接面１３が当接する当接受面であ
る。Reference numeral 11 denotes a through hole formed between the bifurcated bottom of the second yoke 2 having the driven shaft insertion hole 12 and the back of the driven shaft insertion hole, and the convex central protruding portion 10 of the sliding bush 7 is loosely inserted. The through hole 13 is a convex central protruding portion 10 of the sliding bush 7.
A contact surface 14 extending in a substantially vertical direction from the periphery of the base portion, and a contact receiving surface 14 provided around the through hole 11 and contacting the contact surface 13 when the convex central protrusion is inserted sufficiently deep into the through hole. is there.
【００１３】次に、本実施例の作用について説明する。
まず、ロール交換によりそのロール軸を第２のヨーク２
から抜いた場合を考える。図１はこの状態を示してい
る。摺動ブッシュ７はバネ部材９の付勢力により押さ
れ、その凸状中央突出部10が第２のヨーク２の貫通孔11
内に深く挿入され、摺動ブッシュ７の当接面13が第２の
ヨーク２の当接受面14に圧接して止まる。当接面13と当
接受面14が共にユニバーサルジョイントの軸心に対して
直角な平面であり、バネ部材９のバネ力を第２のヨーク
２の自重によるモーメントより若干強く設定しておく
と、第２のヨーク２は第１のヨーク１に対して軸心がほ
ぼ一致した状態で固定されることになり、即ち、首垂れ
を防止することができる。従って、交換した新規ロール
の軸を挿入する場合、スムーズに挿入される。Next, the operation of this embodiment will be described.
First, the roll axis is changed to the second yoke 2 by the roll exchange.
Think about pulling out of FIG. 1 shows this state. The sliding bush 7 is pressed by the urging force of the spring member 9, and its convex central protruding portion 10 is formed in the through hole 11 of the second yoke 2.
The contact surface 13 of the sliding bush 7 presses against the contact receiving surface 14 of the second yoke 2 and stops. If both the contact surface 13 and the contact receiving surface 14 are planes perpendicular to the axis of the universal joint, and the spring force of the spring member 9 is set slightly stronger than the moment of the second yoke 2 due to its own weight, The second yoke 2 is fixed to the first yoke 1 in a state where the axes thereof are substantially aligned, that is, it is possible to prevent hanging of the neck. Therefore, when inserting the shaft of the new roll that has been replaced, it is smoothly inserted.
【００１４】つぎに、図２に示したように、ロール軸20
が第２のヨーク２の従動軸挿入穴12に挿入された場合
は、そのロール軸20の先端がバネ部材９の付勢力に抗し
て摺動ブッシュ７の凸状中央突出部10を押す。その結
果、摺動ブッシュ７の当接面13が第２のヨーク２の当接
受面14から離れて第２のヨーク２が第１のヨーク１に対
して首振り可能となり、ユニバーサルジョイントとして
の回動運動を行うことができるようになる。Next, as shown in FIG.
Is inserted into the driven shaft insertion hole 12 of the second yoke 2, the tip of the roll shaft 20 pushes the convex central protruding portion 10 of the sliding bush 7 against the urging force of the spring member 9. As a result, the contact surface 13 of the sliding bush 7 is separated from the contact receiving surface 14 of the second yoke 2, and the second yoke 2 can swing with respect to the first yoke 1, so that the rotation as a universal joint can be achieved. You can perform dynamic exercise.
【００１５】以上のように構成された本実施例では、ロ
ール交換等で従動軸を第２のヨーク２のカップリング部
から抜いても、第２のヨーク２は首垂れを起こすことな
く、ユニバーサルジョイントの軸心とほぼ一致した状態
で保持することができ、交換したロール等の従動軸を容
易に挿入することができる。また、挿入する従動軸の軸
心とカップリング部の軸心が多少ずれていても、第２の
ヨークはバネによって保持されているので、従動軸の挿
入によってその軸心に容易に順応することができ、破損
を起こすようなことはない。In this embodiment constructed as described above, even if the driven shaft is pulled out of the coupling portion of the second yoke 2 by a roll exchange or the like, the second yoke 2 does not sag and the universal yoke does not drop. The shaft can be held substantially in line with the axis of the joint, and a driven shaft such as a replaced roll can be easily inserted. Further, even if the axis of the driven shaft to be inserted is slightly deviated from the axis of the coupling portion, the second yoke is held by the spring. And no damage is caused.
【００１６】なお、実施例では、架橋部５は第１のヨー
ク１の一部と一体に鋳造されたものを示したが、第１の
ヨークとは別体のものをボルト等で取り付けるようにし
てもよいことは言うまでもない。In the embodiment, the bridging portion 5 is shown as being cast integrally with a part of the first yoke 1. However, the bridging portion 5 may be mounted separately from the first yoke 1 with bolts or the like. Needless to say, this may be done.
【００１７】また、摺動ブッシュ７をセンタポール６か
ら押し出す方向に付勢するバネ部材は、コイルバネの外
に、皿バネを用いてもよい。The spring member for urging the sliding bush 7 in the direction of pushing it out of the center pole 6 may be a disc spring in addition to the coil spring.
【００１８】実施例では、摺動ブッシュ７の凸状中央突
出部１０の周辺に設けられた当接面１３とそれを受ける
貫通孔１１の周辺に設けられた当接受面１４は、それぞ
れ平面として説明したが、第２のヨークのカップリング
部の軸心を第１のヨークの軸心と一致させる必要がない
時は、十字軸心を中心とする同一半径の球面とすること
により、両ヨークの軸心を実際に使用される動作時の首
振り角度の範囲内の任意の角度、例えば従動軸を抜いた
ときの角度で、そのまま保持することができる。[0018] In an embodiment, contact receiving surface 14 provided on the periphery of the through-hole 11 for receiving it and abutment surface 13 provided on the periphery of the convex central projecting portion 10 of the sliding bush 7, as each plane As described above, when it is not necessary to make the axis of the coupling portion of the second yoke coincide with the axis of the first yoke, the two yokes are made to have the same radius around the cross axis. Can be held as it is at an arbitrary angle within the range of the swing angle during the operation actually used, for example, the angle when the driven shaft is pulled out.
【００１９】実動作時は、摺動ブッシュの凸状中央突出
部と従動軸の各先端がバネ部材の付勢力により互いに圧
接摺動することになり、摩耗することが考えられる。そ
こで、少なくとも摺動ブッシュの凸状中央突出部は、何
らかの耐摩耗性処理が施されることが好ましい。その一
つとして樹脂コーティング、例えばナイロンコーティン
グを施すことによって、耐摩耗性を向上することができ
る。あるいは、摺動ブッシュを耐摩耗性樹脂成形品で構
成してもよい。At the time of actual operation, the convex central protruding portion of the sliding bush and the respective distal ends of the driven shaft will slide against each other due to the urging force of the spring member, and it is conceivable that they will be worn. Therefore, it is preferable that at least the convex central protrusion of the sliding bush is subjected to some kind of wear resistance treatment. As one of them, by applying a resin coating, for example, a nylon coating, the wear resistance can be improved. Alternatively, the sliding bush may be made of a wear-resistant resin molded product.
【００２０】[0020]
【発明の効果】以上説明したように、本発明によれば、
単純な構造で、ヨークの首垂れを防止することができ、
従って、従来のように複雑、高価なカップリングサポー
ト装置を設ける必要がなく、従動軸を容易に着脱するこ
とができる。しかも軸心のずれに対しても十分に順応
し、従動軸着脱の衝撃によってユニバーサルジョイント
の十字軸やベアリング、首垂れ装置にダメージを与える
ことがない。As described above, according to the present invention,
With a simple structure, it can prevent hanging of the yoke,
Therefore, there is no need to provide a complicated and expensive coupling support device as in the related art, and the driven shaft can be easily attached and detached. In addition, it is sufficiently adapted to the deviation of the shaft center, and does not damage the cross shaft, the bearing, and the neck hanging device of the universal joint due to the impact of attaching and detaching the driven shaft.
【図１】本発明の一実施例の首垂れ防止装置の断面図で
あり、従動軸を抜いたときの状態を示す図である。FIG. 1 is a cross-sectional view of an apparatus for preventing drooping of a neck according to an embodiment of the present invention, showing a state when a driven shaft is removed.
【図２】同実施例の、従動軸を挿入したときの状態を示
す図である。FIG. 2 is a diagram showing a state when a driven shaft is inserted in the embodiment.
【図３】同実施例の要部の分解斜視図である。FIG. 3 is an exploded perspective view of a main part of the embodiment.
１ … 第１のヨーク、 ２ … 第２のヨーク、 ３ … 十
字軸、 ４ … ベアリング、 ５ … 架橋部、 ６ … セ
ンタポール、 ７ … 摺動ブッシュ、 ８ … 穴、９ …
バネ部材、 10 … 凸状中央突出部、 11 … 貫通孔、 1
2 … 従動軸挿入穴、 13 … 当接面、 14 … 当接受
面、 20 … ロール軸(従動軸)。DESCRIPTION OF SYMBOLS 1 ... 1st yoke, 2 ... 2nd yoke, 3 ... Cross shaft, 4 ... Bearing, 5 ... Bridge part, 6 ... Center pole, 7 ... Sliding bush, 8 ... Hole, 9 ...
Spring member, 10 ... convex central protrusion, 11 ... through-hole, 1
2… driven shaft insertion hole, 13… contact surface, 14… contact receiving surface, 20… roll shaft (driven shaft).
Claims (10)
に結合されたユニバーサルジョイントの一方のヨークを
固定し、他方のヨークを自由にしたとき、他方のヨーク
がその自重により首垂れを起こすのを防止する首垂れ防
止装置であって、 駆動軸に連結された第１のヨーク（１）の二又先端部間
に差し渡され中央部に突出したセンタポール（６）を有
する架橋部（５）と、略凸状の断面形状で底面に穴
（８）を有し、該穴が前記センタポールに摺動自在に嵌
合された摺動ブッシュ（７）と、該摺動ブッシュを前記
センタポールから押し出す方向に付勢するバネ部材
（９）と、従動軸挿入穴（１２）を有する第２のヨーク
（２）の二又間底部と前記従動軸挿入穴奥部とを貫通し
て設けられ前記摺動ブッシュ（７）の凸状中央突出部
（１０）が遊挿される貫通孔（１１）と、前記摺動ブッ
シュの凸状中央突出部（１０）の基部周辺から略垂直方
向に延びた当接面（１３）と、前記貫通孔（１１）の周
辺に設けられ前記凸状中央突出部が前記貫通孔に十分深
く挿入されたとき前記当接面（１３）が当接する当接受
面（１４）とからなり、 前記第２のヨークの従動軸挿入穴（１２）に従動軸が挿
入されていないときは、前記摺動ブッシュ（７）が前記
バネ部材（９）により押されて前記当接面（１３）が当
接受面（１４）に圧接し、前記第２のヨーク（２）が前
記第１のヨーク（１）に対して固定されて首垂れが防止
され、前記第２のヨークの従動軸挿入穴（１２）に従動
軸（２０）が挿入されたときは、その従動軸の先端が前
記バネ部材（９）の付勢力に抗して前記摺動ブッシュ
（７）の凸状中央突出部（１０）を押し、前記当接面
（１３）が当接受面（１４）から離れて前記第２のヨー
ク（２）が前記第１のヨーク（１）に対して所要角度の
首振りを許容されることを特徴とするユニバーサルジョ
イントの首垂れ防止装置。1. When one yoke of a universal joint in which a pair of yokes are rotatably coupled via a cross shaft is fixed and the other yoke is free, the other yoke hangs down by its own weight. What is claimed is: 1. A neck hanging prevention device for preventing a wobble, comprising: a bridging portion having a center pole (6) protruding at a central portion, which is inserted between two forked ends of a first yoke (1) connected to a drive shaft. (5) a sliding bush (7) having a substantially convex cross-sectional shape and having a hole (8) on the bottom surface, the hole being slidably fitted to the center pole; A spring member (9) for urging in the direction of pushing out from the center pole, a second fork of a second yoke (2) having a driven shaft insertion hole (12), and a deep portion of the driven shaft insertion hole. The sliding bush (7) is provided with a convex central projection (10). Through-hole (11) to be inserted, a substantially vertical way from the base around the convex central projecting portion (10) of the sliding bush
The contact surface (13), which extends in the opposite direction, contacts the contact surface (13) provided around the through hole (11) when the convex central protrusion is inserted sufficiently deep into the through hole. When the driven shaft is not inserted in the driven shaft insertion hole (12) of the second yoke, the sliding bush (7) is pushed by the spring member (9). Then, the contact surface (13) is pressed against the contact receiving surface (14), and the second yoke (2) is fixed to the first yoke (1) to prevent drooping. When the driven shaft (20) is inserted into the driven shaft insertion hole (12) of the second yoke, the tip of the driven shaft is opposed to the biasing force of the spring member (9). ), The contact surface (13) is separated from the contact receiving surface (14), and the second support is pushed. The head (2) is allowed to swing at a required angle with respect to the first yoke (1).
は別体のものを取り付けてなることを特徴とする請求項
１記載のユニバーサルジョイントの首垂れ防止装置。2. The apparatus according to claim 1, wherein the bridging portion (5) is provided separately from the first yoke (1).
一部と一体に鋳造されてなることを特徴とする請求項１
記載のユニバーサルジョイントの首垂れ防止装置。3. The bridging portion (5) is integrally cast with a part of the first yoke (1).
An apparatus for preventing drooping of a universal joint as described in the above.
（６）から押し出す方向に付勢するバネ部材（９）は、
コイルバネからなることを特徴とする請求項１記載のユ
ニバーサルジョイントの首垂れ防止装置。4. A spring member (9) for urging the sliding bush (7) in a direction to push it out of the center pole (6),
2. The apparatus according to claim 1, wherein the apparatus comprises a coil spring.
（６）から押し出す方向に付勢するバネ部材（９）は、
皿バネからなることを特徴とする請求項１記載のユニバ
ーサルジョイントの首垂れ防止装置。5. A spring member (9) for urging the sliding bush (7) in a direction to push it out of the center pole (6),
2. The apparatus according to claim 1, wherein the apparatus comprises a disc spring.
基部周辺から略垂直方向に延びた当接面（１３）とそれ
を受ける貫通孔の周辺に設けられた当接受面（１４）
は、それぞれ平面からなることを特徴とする請求項１記
載のユニバーサルジョイントの首垂れ防止装置。6. A sliding bush (7) having a convex central projection.
Abutment surface extending substantially perpendicularly from the peripheral base (13) and the contact receiving surface provided on the periphery of the through hole receiving it (14)
2. The universal joint hanging prevention device according to claim 1, wherein each of the flat joints is formed of a flat surface.
基部周辺から略垂直方向に延びた当接面（１３）とそれ
を受ける貫通孔の周辺に設けられた当接受面（１４）
は、それぞれ十字軸心を中心とする同一半径の球面から
なることを特徴とする請求項１記載のユニバーサルジョ
イントの首垂れ防止装置。7. A sliding bush (7) having a convex central projection.
Abutment surface extending substantially perpendicularly from the peripheral base (13) and the contact receiving surface provided on the periphery of the through hole receiving it (14)
2. The apparatus according to claim 1, wherein each of the plurality of spheres has a spherical surface having the same radius centered on a cross axis.
先端は耐摩耗性処理が施されていることを特徴とする請
求項１記載のユニバーサルジョイントの首垂れ防止装
置。8. The universal joint drooping prevention device according to claim 1, wherein the tip of the convex central protruding portion of the sliding bush (7) is subjected to a wear resistance treatment.
施されていることを特徴とする請求項８記載のユニバー
サルジョイントの首垂れ防止装置。9. The apparatus according to claim 8, wherein a resin coating is applied as a wear resistance treatment.
形品からなることを特徴とする請求項１記載のユニバー
サルジョイントの首垂れ防止装置。10. The apparatus according to claim 1, wherein the sliding bush is made of a wear-resistant resin molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6041331A JP2632641B2 (en) | 1994-03-11 | 1994-03-11 | Universal joint neck sag prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6041331A JP2632641B2 (en) | 1994-03-11 | 1994-03-11 | Universal joint neck sag prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07248028A JPH07248028A (en) | 1995-09-26 |
| JP2632641B2 true JP2632641B2 (en) | 1997-07-23 |
Family
ID=12605543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6041331A Expired - Lifetime JP2632641B2 (en) | 1994-03-11 | 1994-03-11 | Universal joint neck sag prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2632641B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034754A1 (en) * | 2007-09-12 | 2009-03-19 | Yanmar Co., Ltd. | Work vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384174B (en) * | 2011-07-11 | 2015-12-09 | 安东石油技术（集团）有限公司 | Universal joint |
| CN112089170A (en) * | 2020-10-22 | 2020-12-18 | 东莞丽丝智能科技有限公司 | Novel air duct |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528193U (en) * | 1978-08-14 | 1980-02-23 | ||
| JPH0259321U (en) * | 1988-10-25 | 1990-04-27 |
-
1994
- 1994-03-11 JP JP6041331A patent/JP2632641B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034754A1 (en) * | 2007-09-12 | 2009-03-19 | Yanmar Co., Ltd. | Work vehicle |
| JP2009067176A (en) * | 2007-09-12 | 2009-04-02 | Yanmar Co Ltd | Working vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07248028A (en) | 1995-09-26 |
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