JPH07248028A - Device universal joint from hanging down - Google Patents
Device universal joint from hanging downInfo
- Publication number
- JPH07248028A JPH07248028A JP4133194A JP4133194A JPH07248028A JP H07248028 A JPH07248028 A JP H07248028A JP 4133194 A JP4133194 A JP 4133194A JP 4133194 A JP4133194 A JP 4133194A JP H07248028 A JPH07248028 A JP H07248028A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- universal joint
- sliding bush
- neck
- hole
- 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
- 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)
Abstract
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 neck drip prevention device for the universal joint.
【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, the shaft centers of the shafts do not always coincide with each other.
Leading to damage. Therefore, by interposing a universal joint, it is possible to absorb the deviation of the shaft center and transmit the power 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。It is well known that, as one of the important functions of the universal joint, the universal joint has a structure in which the cruciform shaft portion is bent within a certain angle range and can freely swing. When one of the pair of yokes rotatably connected via the cross shaft is used as a reference,
The maximum angle α 1 that the other yoke can tilt is generally predetermined by the basic design of the universal joint. Further, the swing angle α 2 at the time of actual use of it is determined by 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 the drive shaft and the driven shaft are connected to each other through a universal joint. When replacing a driven machine, for example, a metal rolling roll, if the roll shaft is removed from the end yoke of the universal joint, the end yoke loses its support, causing its neck to sag, and hitting the tip of the other yoke. Stop in contact. At that time, if the universal joint is large in size, the end yoke itself also has a considerable weight, so that the yoke collides with the yoke with a large force, and the impact damages the cross shaft and the bearing. On the other hand, when inserting a new roll shaft into the end yoke for roll replacement, the end yoke, which is a heavy load, must be lifted, which is a difficult task.
【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, in general, in addition to installing a support device (spindle carrier) for supporting the weight of the center yoke connected to the drive shaft, a support device for holding the axial center of the coupling, which is the end yoke, is provided. Install the device (coupling support). Among them, there is also one in which a complicated one having both of these devices is installed on the wall surface of the 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 so far for preventing neck drooping of the end yoke when the driven shaft is removed. For example, a rod driving device is installed inside one yoke body, and the rod is projected and the tip of the rod driving device is inserted into a rod receiving member provided on the other yoke side to prevent neck drooping (Actual Publication No. Sho 56-22027). Or a rod driving device is installed in a hole provided at the center of the cross shaft, the rod is projected, and the rod is passed through a hole of a reinforcing member provided on one yoke, and a rod receiving member provided on the other yoke. There is one that is inserted 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 conventional examples, the hydraulic cylinder is used as the rod driving device, and not only the structure is complicated, but also a slight axial deviation (fixed by the rod is fixed). There is a problem that the rod is unreasonable due to the deviation of the axial center of the coupling and the axial center of the new roll inserted into the rod, causing failure or damage.The present invention solves the above-mentioned problems of the prior art. SUMMARY OF THE INVENTION It is an object of the present invention to provide a universal joint neck drooping prevention device which has a simple structure and is sufficiently adapted to a displacement of the shaft center to prevent damage.
【０００８】[0008]
【課題を解決するための手段】この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周辺に設けられた当接面と、
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 this object, the present invention has a center pole which is inserted between the forked ends of the first yoke connected to the drive shaft and which projects in the center. A bridging portion, a sliding bush having a hole on its substantially convex bottom surface, the hole being slidably fitted to the center pole, and a spring member for urging the sliding bush from the center pole. A through-hole provided through the bottom portion of the second yoke having the driven shaft insertion hole and the inner part of the driven shaft insertion hole, and the through-hole into which the convex central protrusion of the sliding bush is loosely inserted; An abutment surface provided around the convex center protrusion of
The convex central protruding portion provided around the through hole is configured to have a contact receiving surface with which the contact surface abuts when it is inserted deep enough 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 structure, when the driven shaft is not inserted in 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 neck drooping. On the other hand, when the driven shaft is inserted into the driven shaft insertion hole of the second yoke, the tip of the driven shaft pushes the convex central protruding portion of the sliding bush against the biasing 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。Embodiments will be described in detail below 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) through an intermediate shaft portion 1a.
Of the second yoke, 2 is a second yoke having a coupling connected to a driven shaft, and 3 is a first yoke 1 and a second yoke 2.
Cross shafts 4 interposed between the shafts are bearings as bearings for the cross shaft 3, and the above 1 to 4 basically form a universal joint.
【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, as shown in more detail in FIG.
A bridge portion 7 having a center pole 6 which is inserted between the forked ends of the first yoke 1 and protrudes in the central portion, 7 has a hole 8 in a substantially convex bottom surface, and the hole 8 slides on the center pole 6. A sliding bush 9 that is movably fitted is a spring member 9 that urges the sliding bush 7 in a direction to push it out from the center pole 6.
The bridging portion 5 is here integrally cast with the cap portion of the first yoke 1 for fixing the bearing 4. Further, the sliding bush 7 is provided with a convex center protrusion 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、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 is provided so as to penetrate through the bottom portion of the second yoke 2 having the driven shaft insertion hole 12 and the inner portion of the driven shaft insertion hole, and the convex central protrusion 10 of the sliding bush 7 is loosely inserted. A through hole, 13 is an abutment surface provided around the convex central protruding portion 10 of the bush 7, and 14 is a peripheral surface provided around the through hole 11 when the convex central protruding portion is inserted deep enough into the through hole. The contact surface is a contact receiving surface with which the contact surface 13 abuts.
【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 shaft is replaced with the second yoke 2 by replacing the roll.
Consider the case of pulling out. FIG. 1 shows this state. The sliding bush 7 is pushed by the urging force of the spring member 9, and the convex central protruding portion 10 thereof has a through hole 11 in the second yoke 2.
The contact surface 13 of the sliding bush 7 is pressed into contact with the contact receiving surface 14 of the second yoke 2 and is stopped. Both the contact surface 13 and the contact receiving surface 14 are planes perpendicular to the axis of the universal joint, and if the spring force of the spring member 9 is set to be slightly stronger than the moment due to the weight of the second yoke 2, The second yoke 2 is fixed to the first yoke 1 in a state where the axes thereof are substantially coincident with each other, that is, neck drooping can be prevented. Therefore, when inserting the shaft of the replaced new roll, 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. 2, the roll shaft 20
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 biasing force of the spring member 9. As a result, the contact surface 13 of the sliding bush 7 separates from the contact receiving surface 14 of the second yoke 2, so that the second yoke 2 can be swung with respect to the first yoke 1, and the rotation as a universal joint can be performed. Be able to perform dynamic movements.
【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 the present embodiment constructed as described above, even if the driven shaft is pulled out from the coupling portion of the second yoke 2 for roll replacement or the like, the second yoke 2 does not droop and the universal The joint shaft can be held in a state substantially coincident with the shaft center of the joint, and the driven shaft such as the replaced roll can be easily inserted. Further, even if the axis of the driven shaft to be inserted and the axis of the coupling part are slightly deviated from each other, the second yoke is held by the spring, so that the insertion of the driven shaft facilitates adaptation to the axis. It does not cause damage.
【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 formed integrally with a part of the first yoke 1. However, a separate body from the first yoke is attached with a bolt or the like. It goes without saying that it is okay.
【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。As the spring member for urging the sliding bush 7 in the direction of pushing it out from the center pole 6, a disc spring may be used instead of 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。In the embodiment, the contact surface 13 provided around the convex central protruding portion 10 of the sliding bush 7 and the contact receiving surface 14 provided around the through hole 11 that receives the contact surface 13 are plane surfaces. However, when it is not necessary to align the axial center of the coupling portion of the second yoke with the axial center of the first yoke, a spherical surface with the same radius centering on the cross axis is used to make The shaft center can be held as it is at an arbitrary angle within the range of the swinging angle when 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。During actual operation, the convex central protruding portion of the sliding bush and the respective tips of the driven shaft may come into pressure contact sliding with each other due to the urging force of the spring member, and may be worn. Therefore, it is preferable that at least the convex central protruding portion of the sliding bush is subjected to some abrasion resistance treatment. Wear resistance can be improved by applying a resin coating, for example, a nylon coating, as one of them. Alternatively, the sliding bush may be formed 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 is possible to prevent drooping of the yoke,
Therefore, it is not necessary to provide a complicated and expensive coupling support device as in the prior art, and the driven shaft can be easily attached and detached. Moreover, it is sufficiently adapted to the misalignment of the shaft center, and the cross shaft of the universal joint, the bearing, and the hanging device are not damaged by 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 a neck drooping prevention device according to an embodiment of the present invention, showing a state in which a driven shaft is pulled out.
【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 view showing a state of the embodiment when a driven shaft is inserted.
【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)。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)の周辺に設けられた当接面(1
3)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 is rotatably coupled via a cross shaft is fixed and the other yoke is freed, the other yoke hangs down due to its own weight. A neck drooping prevention device for preventing the rising, which is a bridge portion having a center pole (6) which is inserted between the forked ends of the first yoke (1) connected to the drive shaft and protrudes in the central portion. (5) and a sliding bush (7) having a hole (8) on a substantially convex bottom surface, the hole being slidably fitted to the center pole.
A spring member (9) for urging the sliding bush from the center pole, a bottom portion of the second yoke (2) having a driven shaft insertion hole (12), and the driven shaft insertion. A through hole (11) penetrating the inner part of the hole and through which the convex central protruding portion (10) of the sliding bush (7) is loosely inserted, and the convex central protruding portion (10) of the sliding bush. The contact surface (1
3), and the contact surface when the convex central protrusion provided around the through hole (11) is inserted deep enough into the through hole
(13) is in contact with the contact receiving surface (14), and when the driven shaft is not inserted into the driven shaft insertion hole (12) of the second yoke, the sliding bush (7) is the spring. The contact surface (13) is pressed against the contact receiving surface (14) by being pressed by the member (9), the second yoke (2) is fixed to the first yoke (1), and the neck is fixed. When drooping is prevented and the driven shaft (20) of the second yoke is inserted into the driven shaft insertion hole (12),
The tip of the driven shaft pushes the convex central protruding portion (10) of the sliding bush (7) against the biasing force of the spring member (9), and the contact surface (13) becomes the contact receiving surface ( A device for preventing neck drooping of a universal joint, characterized in that the second yoke (2) is allowed to swing at a required angle with respect to the first yoke (1) apart from 14).
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 neck drooping prevention device for a universal joint according to claim 1, wherein the bridging portion (5) is attached separately from the first yoke (1).
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 neck drip prevention device for a universal joint according to claim 1, wherein the bridging portion (5) is cast integrally with a part of the first yoke (1).
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. The neck hanging prevention of a universal joint according to claim 1, wherein the spring member (9) for urging the sliding bush (7) in a direction to push it out from the center pole (6) is formed of a coil spring. apparatus.
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. The neck hang of a universal joint according to claim 1, wherein the spring member (9) for urging the sliding bush (7) in the direction of pushing it out from the center pole (6) is a disc spring. Prevention device.
辺に設けられた当接面(13)とそれを受ける貫通孔の周辺
に設けられ当接受面(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. The contact surface (13) provided around the convex central protrusion of the sliding bush (7) and the contact receiving surface (14) provided around the through hole that receives the contact surface (14) are flat surfaces. The neck drip prevention device for a universal joint according to claim 1, wherein the device comprises:
辺に設けられた当接面(13)とそれを受ける貫通孔の周辺
に設けられ当接受面(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. An abutment surface (13) provided around the convex center protrusion of the sliding bush (7) and an abutment surface (14) provided around a through hole for receiving the abutment surface (14), respectively. A spherical surface having the same radius centered on the axis is formed.
The universal joint neck drooping prevention device described.
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 neck drooping prevention device for a universal joint according to claim 1, wherein the tip of the convex central protruding portion of the sliding bush (7) is subjected to abrasion 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 neck drooping prevention device for a universal joint according to claim 8, wherein a resin coating is applied as abrasion resistance treatment.
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 neck hanging prevention device for a universal joint according to claim 1, wherein the sliding bush (7) 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 true JPH07248028A (en) | 1995-09-26 |
| JP2632641B2 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 |
|---|---|---|---|---|
| CN102384174A (en) * | 2011-07-11 | 2012-03-21 | 安东石油技术（集团）有限公司 | Universal joint |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009067176A (en) * | 2007-09-12 | 2009-04-02 | Yanmar Co Ltd | Working vehicle |
Citations (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
Patent Citations (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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384174A (en) * | 2011-07-11 | 2012-03-21 | 安东石油技术（集团）有限公司 | Universal joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2632641B2 (en) | 1997-07-23 |
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