JPH063216B2 - Lubricating device for universal joint - Google Patents

Lubricating device for universal joint

Info

Publication number
JPH063216B2
JPH063216B2 JP61122485A JP12248586A JPH063216B2 JP H063216 B2 JPH063216 B2 JP H063216B2 JP 61122485 A JP61122485 A JP 61122485A JP 12248586 A JP12248586 A JP 12248586A JP H063216 B2 JPH063216 B2 JP H063216B2
Authority
JP
Japan
Prior art keywords
grease
outer end
movable
movable rod
diameter
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
Application number
JP61122485A
Other languages
Japanese (ja)
Other versions
JPS62278317A (en
Inventor
一彦 栗山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEKITAN ROTENBORI KIKAI GIJUTSU KENKYU KUMIAI
Original Assignee
SEKITAN ROTENBORI KIKAI GIJUTSU KENKYU KUMIAI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SEKITAN ROTENBORI KIKAI GIJUTSU KENKYU KUMIAI filed Critical SEKITAN ROTENBORI KIKAI GIJUTSU KENKYU KUMIAI
Priority to JP61122485A priority Critical patent/JPH063216B2/en
Publication of JPS62278317A publication Critical patent/JPS62278317A/en
Publication of JPH063216B2 publication Critical patent/JPH063216B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、ユニバーサルジョイントにおける潤滑装
置、さらに詳しくは、とくに高速回転するプロペラシャ
フトなどの継手部に好適なユニバーサルジョイントの十
字軸体の各軸の端部とヨークの間の軸受にグリースを供
給するための装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubrication device for a universal joint, and more particularly, an end of each shaft of a cross shaft body of a universal joint suitable for a joint portion such as a propeller shaft that rotates at high speed. Device for supplying grease to the bearing between the part and the yoke.

従来の技術とその問題点 たとえばプロペラシャフトなどの継手部に使用される高
速回転用のユニバーサルジョイントとして、十字軸体の
各軸の外端部に軸受を介してヨークが回転自在に連結さ
れ、十字軸体に中心部のグリース溜めとこのグリース溜
めから各軸の外端面に達するグリース穴が設けられてお
り、各軸のグリース穴の外端部にグリース溜めから各軸
の軸受に供給されるグリースの量を制御するグリースバ
ルブが設けられたものが種々知られている。ところが、
このようなユニバーサルジョイントでも、とくに高速回
転の場合に、十字軸体の中心部のグリース溜めに封入さ
れたグリースが遠心力により初期段階で外部に飛散して
しまうため、初期にグリース溜めに十分にグリースを封
入しても潤滑効果が低く、頻繁にグリースを補給しなけ
ればならないという問題がある。また、十字軸体の４つ
の軸の軸受のシールリップ緊迫力の相異により４個の軸
受に均等に給脂することが困難であるという問題があ
る。Conventional technology and its problems For example, as a universal joint for high-speed rotation used in joints of propeller shafts, etc., a yoke is rotatably connected via a bearing to the outer end of each shaft of the cross shaft body, The shaft body is provided with a grease reservoir in the center and a grease hole that reaches the outer end surface of each shaft from this grease reservoir.The grease supplied to the bearing of each shaft from the grease reservoir is provided at the outer end of the grease hole of each shaft. Various types of devices are known that are provided with a grease valve for controlling the amount. However,
Even with such a universal joint, especially in the case of high-speed rotation, the grease enclosed in the grease reservoir at the center of the cross shaft will scatter to the outside at the initial stage due to the centrifugal force. Even if grease is enclosed, the lubrication effect is low, and there is a problem that the grease must be replenished frequently. Further, there is a problem that it is difficult to uniformly lubricate the four bearings due to the difference in the seal lip tightening force of the bearings of the four shafts of the cross shaft body.

この発明の目的は、上記の問題を全て解決したユニバー
サルジョイントにおける潤滑装置を提供することにあ
る。An object of the present invention is to provide a lubricating device in a universal joint that solves all the above problems.

問題点を解決するための手段 この発明による潤滑装置は、 十字軸体の各軸の外端部に軸受を介してヨークが回転自
在に連結されているユニバーサルジョイントにおいて、 十字軸体の中心部に設けられたグリース溜めと、 このグリース溜めから各軸の外端面に達するグリース
穴と、 各軸のグリース穴の外端部にはめ止められ、かつ外端
部側が開口し内端部側の底の中心部に穴が形成された固
定受け皿と、 この固定受け皿の底の穴に、少なくとも内端部側に突
出するように設けられた筒体と、 この筒体の中に、内外方向に移動しうるように隙間を
あけて挿入された可動棒と、 この可動棒の外端部に設けられ、筒体の外端部を開閉
する栓と、 可動棒の内端部に可動棒とともに所定範囲を内外方向
に移動しうるように連結され、かつ外端部側が開口し、
筒体の内端部側の外周に摺動自在にはめられた小径グリ
ース受け部と小径グリース受け部の外端部側にあってグ
リース穴の内径より小さい外径を有する大径グリース受
け部とからなる可動受け皿と、 筒体の内端部と可動掛け皿の間に形成され、小径グリ
ース受け部と大径グリース受け部を連通するグリース通
路と を備えており、 可動棒および可動受け皿が最も内端部側に移動したとき
に栓が閉じて筒体のグリース通路が開き、可動棒および
可動受け皿が最も外端部側に移動したときに栓が開いて
小径グリース受け部の周壁により筒体のグリース通路が
塞がれ、かつ大径グリース受け部の外端部と固定受け皿
の底との間に常時一定以上の隙間が保たれるようになさ
れているものである。Means for Solving the Problems A lubricating device according to the present invention is a universal joint in which a yoke is rotatably connected to outer ends of respective shafts of a cross shaft body through bearings, and a central part of the cross shaft body is provided. The grease reservoir provided, the grease hole that reaches the outer end face of each shaft from this grease reservoir, and the outer end of the grease hole of each shaft that is locked, and the outer end side is open and the bottom of the inner end side A fixed tray with a hole formed in the center, a tubular body provided in the hole at the bottom of the fixed tray so as to project at least to the inner end side, and inside the tubular body that moves inward and outward. So that the movable rod is inserted with a gap between the movable rod and the stopper, which is provided at the outer end of the movable rod to open and close the outer end of the cylinder, and the movable rod has a predetermined range at the inner end. It is connected so that it can move inward and outward, and the outer end side is The mouth,
A small-diameter grease receiving part slidably fitted to the outer periphery of the inner end side of the cylindrical body, and a large-diameter grease receiving part on the outer end side of the small-diameter grease receiving part and having an outer diameter smaller than the inner diameter of the grease hole. It is equipped with a movable saucer consisting of, and a grease passage that is formed between the inner end of the cylinder and the movable hanging tray and connects the small diameter grease receiving section and the large diameter grease receiving section. When moving to the inner end side, the plug closes and the grease passage of the cylinder opens, and when the movable rod and the movable tray move to the outermost end side, the plug opens and the peripheral wall of the small diameter grease receiving part causes the cylinder to move. The grease passage is closed, and a gap larger than a certain level is always maintained between the outer end of the large-diameter grease receiving portion and the bottom of the fixed tray.

なお、この明細書において、内および外は十字軸体の放
射方向の内および外をいうものとする。In addition, in this specification, the inside and the outside refer to the inside and the outside in the radial direction of the cross shaft body.

作用 十字軸体のグリース溜めには、初期にグリースが給脂さ
れる。Action Grease is initially supplied to the grease reservoir of the cross shaft.

十字軸体が回転すると、可動棒および可動受け皿が遠心
力により最も外端部側に移動し、栓が開くとともに、可
動受け皿の小径グリース受け部の周壁が筒体のグリース
通路を塞ぐ。そして、十字軸体のグリース溜め内のグリ
ースは遠心力によりグリース穴を通って外端部側に移動
し、可動受け皿の大径グリース受け部と固定受け皿の底
の隙間から大径グリース受け部内に入る。このとき、大
径グリース受け部と小径グリース受け部の間のグリース
通路が塞がれているため、大径グリース受け部にグリー
スが満された状態で平衡になり、グリースの移動は停止
する。When the cross shaft rotates, the movable rod and the movable tray move to the outermost end side by the centrifugal force, the plug is opened, and the peripheral wall of the small diameter grease receiving portion of the movable tray closes the grease passage of the cylindrical body. Then, the grease in the grease reservoir of the cross shaft moves to the outer end side through the grease hole due to centrifugal force, and enters the large-diameter grease receiving portion through the gap between the large-diameter grease receiving portion of the movable tray and the fixed receiving tray. enter. At this time, since the grease passage between the large-diameter grease receiving portion and the small-diameter grease receiving portion is blocked, the large-diameter grease receiving portion is in equilibrium when the grease is full, and the movement of the grease is stopped.

十字軸体が停止すると、上方に停止した軸においては、
可動棒および可動受け皿が動力により最も内端部側に移
動し、栓が閉じるとともに、筒体のグリース通路が開
く。このため、回転中に大径グリース受け部に溜まった
グリースはこのグリース通路を通って小径グリース受け
部内に流下する。また、栓が閉じているため、グリース
穴の外端部および固定受け皿内のグリースが下方に戻る
ことはない。When the cruciform shaft stops, in the shaft stopped upward,
The movable rod and the movable tray are moved to the innermost end side by power, the plug is closed, and the grease passage of the cylindrical body is opened. Therefore, the grease accumulated in the large diameter grease receiving portion during rotation flows down into the small diameter grease receiving portion through the grease passage. Further, since the plug is closed, the grease in the outer end portion of the grease hole and the fixed tray does not return downward.

十字軸体が再び回転すると、前記同様に、栓が開くとと
もに、筒体のグリース通路が閉じる。このため、停止中
に小径グリース受け部に溜まっていたグリースだけが筒
体および固定受け皿内を通って軸受に供給される。When the cross shaft rotates again, the plug is opened and the grease passage of the cylinder is closed, as described above. Therefore, only the grease accumulated in the small diameter grease receiving portion during the stop is supplied to the bearing through the inside of the cylindrical body and the fixed receiving tray.

そして、このような十字軸体の起動、停止を繰返すこと
により、グリース溜め内のグリースがほぼ一定量ずつ徐
々に軸受に給脂される。By repeating the start and stop of the cross shaft body, the grease in the grease reservoir is gradually supplied to the bearing in a substantially constant amount.

実施例 以下、図面を参照して、この発明の実施例を説明する。Embodiments Embodiments of the present invention will be described below with reference to the drawings.

第３図はユニバーサルジョイントの十字軸体(10)の一部
を示し、この十字軸体(10)の各軸(10a)の外端部には、
たとえば針状ころ軸受またはころ軸受などのころがり軸
受(11)を介してヨーク(12)が回転自在に連結されてい
る。軸受(11)のケース(11a)は軸(10a)の外端面と周囲を
覆っており、ケース(11a)の内端部には軸(10a)との間を
密封するシール(13)が取付けられている。十字軸体(10)
には、中心部のグリース溜め(14)と、グリース溜め(14)
から各軸(10a)の外端面に達する放射状のグリース穴(1
5)と、グリース溜め(14)から軸(10a)相互間の外端面に
達するグリース注入穴(16)が設けられており、グリース
注入穴(16)の外端部にグリースニップル(17)が取付けら
れている。各軸(10a)のグリース穴(15)の外端部には他
の部分より内径の大きいバルブ収容部(15a)が形成さ
れ、各軸(10a)の端面には放射状のみぞ(18)が形成され
ている。また、バルブ収容部(15a)に対向する軸受(11)
のケース(11a)の内面に、浅い円形凹所(19)が形成され
ている。そして、各軸(10a)のバルブ収容部(15a)にそれ
ぞれグリースバルブ(20)が挿入されている。FIG. 3 shows a part of the cruciform shaft body (10) of the universal joint, and at the outer end of each shaft (10a) of the cruciform shaft body (10),
For example, a yoke (12) is rotatably connected via a rolling bearing (11) such as a needle roller bearing or a roller bearing. The case (11a) of the bearing (11) covers the outer end surface and the periphery of the shaft (10a), and the inner end of the case (11a) has a seal (13) that seals the shaft (10a). Has been. Cruciform body (10)
The central grease reservoir (14) and the grease reservoir (14)
From the radial grease hole (1
5) and a grease injection hole (16) reaching the outer end surface between the grease reservoir (14) and the shaft (10a), and a grease nipple (17) is provided at the outer end of the grease injection hole (16). Installed. A valve accommodating part (15a) having a larger inner diameter than the other parts is formed on the outer end of the grease hole (15) of each shaft (10a), and a radial groove (18) is formed on the end face of each shaft (10a). Has been formed. Further, the bearing (11) facing the valve accommodating portion (15a)
A shallow circular recess (19) is formed on the inner surface of the case (11a). The grease valve (20) is inserted into the valve accommodating portion (15a) of each shaft (10a).

第１図および第２図はグリースバルブ(20)の詳細を示し
ており、このバルブ(20)は次のように構成されている。1 and 2 show the details of the grease valve (20), and the valve (20) is constructed as follows.

バルブ収容部(15a)の外端部に、固定受け皿(21)がはめ
止められている。固定受け皿(21)は外端部側が開口した
円筒状をなし、内端部側の底の中心部にあけられた穴(2
2)の周囲に内端部側に突出した短円筒状の突部(21a)が
一体に形成されている。この突部(21a)に、内外両端が
開口した筒体(23)がはめ止められている。筒体(23)の一
端部は固定受け皿(21)の底より少し外端部側に突出し、
他端部は突部(21a)より長く内端部側に突出しており、
この筒体(23)の内端部には複数の切欠き状のグリース通
路(24)が形成されている。筒体(23)の中に、これより細
い可動棒(25)が内外方向に移動しうるように隙間をあけ
て挿入されている。可動棒(25)の外端部には、筒体(23)
の外端部を開閉する円板状の栓(26)が一体状に設けられ
ている。可動棒(25)の内端部には、外端部側が開口した
段付円筒状の可動受け皿(27)の底の中心部がはめられ、
可動棒(25)に固定された止め輪(28)により保持されてい
る。可動受け皿(27)は、筒体(23)の内端部側の外周に摺
動自在にはめられた小径グリース受け部(27a)と、小径
グリース受け部(27a)の外端部側に一体に形成された大
径グリース受け部(27b)とからなり、大径グリース受け
部(27b)の外径はバルブ収容部(15a)の内径より少し小さ
い。可動受け皿(27)は可動棒(25)とともに、第１図のよ
うな最も内端部側の位置（最内端位置）と第２図のよう
な最も外端部側の位置（最外端位置）との間を移動しう
る。そして、可動棒(25)および可動受け皿(27)が最内端
位置に移動したときには、栓(26)が筒体(23)の外端部に
接して閉じ、筒体(23)のグリース通路(24)が開いて小径
グリース受け部(27a)と大径グリース受け部(27b)が連通
する。逆に、可動棒(25)および可動受け皿(27)が最外端
位置に移動したときには、栓(26)が筒体(23)から離れて
開き、小径グリース受け部(27a)の周壁により筒体(23)
のグリース通路(24)が塞がれる。また、可動受け皿(27)
が最外端位置に移動したときでも、大径グリース受け部
(27b)と固定受け皿(21)の底の間に一定の隙間が保たれ
るようになっている。A fixed tray (21) is fixed to the outer end of the valve accommodating portion (15a). The fixed tray (21) has a cylindrical shape with the outer end side open, and has a hole (2
Around the periphery of 2), a short cylindrical protrusion (21a) protruding toward the inner end side is integrally formed. A cylindrical body (23) having both inner and outer ends opened is fixed to the protrusion (21a). One end of the tubular body (23) slightly projects from the bottom of the fixed tray (21) to the outer end side,
The other end protrudes toward the inner end side longer than the protrusion (21a),
A plurality of notched grease passages (24) are formed at the inner end of the tubular body (23). A movable rod (25) thinner than this is inserted into the cylindrical body (23) with a gap so that the movable rod (25) can move inward and outward. At the outer end of the movable rod (25), the cylinder (23)
A disc-shaped stopper (26) for opening and closing the outer end of the is integrally provided. At the inner end of the movable rod (25), the center of the bottom of the stepped cylindrical movable tray (27) with the outer end open is fitted.
It is held by a retaining ring (28) fixed to the movable rod (25). The movable tray (27) is integrated with the small-diameter grease receiving part (27a) that is slidably fitted to the outer periphery of the inner end side of the tubular body (23) and the outer end side of the small-diameter grease receiving part (27a). The large-diameter grease receiving portion (27b) is formed on the outer surface of the valve, and the outer diameter of the large-diameter grease receiving portion (27b) is slightly smaller than the inner diameter of the valve accommodating portion (15a). The movable tray (27), together with the movable rod (25), is located at the innermost position (innermost end position) as shown in FIG. 1 and at the outermost end position (outermost end) as shown in FIG. Position). Then, when the movable rod (25) and the movable tray (27) move to the innermost end position, the plug (26) comes into contact with the outer end of the tubular body (23) and closes, and the grease passage of the tubular body (23) is closed. (24) opens and the small diameter grease receiving portion (27a) communicates with the large diameter grease receiving portion (27b). Conversely, when the movable rod (25) and the movable tray (27) move to the outermost position, the stopper (26) opens away from the cylinder body (23) and the cylinder of the small diameter grease receiver (27a) is closed. Body (23)
The grease passage (24) of is blocked. Also, movable saucer (27)
Even if the grease has moved to the outermost position, the large-diameter grease receiving part
A fixed gap is maintained between the bottom of the fixed tray (21) and the bottom (27b).

上記のユニバーサルジョイントにおいて、十字軸体(10)
のグリース溜め(14)には、初期に、グリース注入穴(16)
のニップル(17)からグリースが給脂される。In the above universal joint, the cross shaft body (10)
The grease reservoir (14) of the
Grease is supplied from the nipple (17).

十字軸体(10)が回転すると、可動棒(25)および可動受け
皿(27)が遠心力により第２図のように最外端位置に移動
し、栓(26)が開くとともに、可動受け皿(27)の小径グリ
ース受け部(27a)の周壁が筒体(23)のグリース通路(24)
を塞ぐ。そして、グリース溜め(14)内のグリースは遠心
力によりグリース穴(15)を通って外端部側に移動し、可
動受け皿(27)の大径グリース受け部(27b)と固定受け皿
(21)の底の隙間から大径グリース受け部(27b)内に入
る。このとき、大径グリース受け部(27b)と小径グリー
ス受け部(27a)の間のグリース通路(24)が塞がれている
ため、大径グリース受け部(27b)にグリースが満された
状態で平衡になり、グリースの移動は停止する。When the cross shaft (10) rotates, the movable rod (25) and the movable tray (27) are moved to the outermost end position by the centrifugal force as shown in FIG. 2, the plug (26) is opened, and the movable tray ( The peripheral wall of the small diameter grease receiving part (27a) of (27) is the grease passage (24) of the tubular body (23).
Close up. Then, the grease in the grease reservoir (14) moves to the outer end side through the grease hole (15) due to centrifugal force, and the large-diameter grease receiving portion (27b) of the movable receiving tray (27) and the fixed receiving tray are moved.
Enter into the large diameter grease receiving part (27b) through the gap at the bottom of (21). At this time, the grease passage (24) between the large diameter grease receiving portion (27b) and the small diameter grease receiving portion (27a) is blocked, so the large diameter grease receiving portion (27b) is filled with grease. The equilibrium is reached and the grease movement stops.

十字軸体(10)が停止すると、上方に停止した軸(10a)に
おいては、可動棒(25)および可動受け皿(27)が重力によ
り第１図のように最内端位置に移動し、栓(26)が閉じる
とともに、筒体(23)のグリース通路(24)が開く。このた
め、回転中に大径グリース受け部(27b)に溜まったグリ
ースはこのグリース通路(24)を通って小径グリース受け
部(27a)内に流下する。また、栓(26)が閉じているた
め、グリース穴の外端部および固定受け皿(21)内のグリ
ースが下方に戻ることはない。When the cross shaft body (10) stops, in the shaft (10a) stopped upward, the movable rod (25) and the movable tray (27) move to the innermost end position as shown in FIG. When the (26) is closed, the grease passage (24) of the tubular body (23) is opened. Therefore, the grease accumulated in the large diameter grease receiving portion (27b) during rotation flows down into the small diameter grease receiving portion (27a) through the grease passage (24). Further, since the plug (26) is closed, the grease in the outer end of the grease hole and the fixed tray (21) does not return downward.

十字軸体(10)が再び回転すると、前記同様に、栓(26)が
開くとともに、筒体(23)のグリース通路(24)が閉じる。
このため、停止中に小径グリース受け部(27a)に溜まっ
ていたグリースだけが筒体(23)を通って固定受け皿(21)
内に供給され、固定受け皿(21)内のグリースは、軸受(1
1)のケース(11a)の凹所(19)および軸(10a)のみぞ(18)を
通って軸受(11)に供給される。When the cross shaft body (10) is rotated again, the plug (26) is opened and the grease passage (24) of the cylindrical body (23) is closed as described above.
For this reason, only the grease accumulated in the small-diameter grease receiving portion (27a) during the stop passes through the cylindrical body (23) and is fixed to the fixed tray (21).
The grease in the fixed pan (21) supplied to the bearing (1
It is supplied to the bearing (11) through the recess (19) of the case (11a) of 1) and the groove (18) of the shaft (10a).

そして、このような十字軸体(10)の起動、停止を繰返す
ことにより、グリース溜め(14)内のグリースがほぼ一定
量ずつ徐々に軸受(11)に給脂される。このため、グリー
ス溜め(14)内のグリースが初期段階で外部に飛散してし
まうようなことがなく、グリースを定期的に補給すれば
よい。また、４つの軸(10a)の軸受(11)にグリースがほ
ぼ一定量ずつ強制的に供給されるので、これらの軸受(1
0)に均等に給脂することができる。Then, by repeating the start and stop of the cross shaft body (10) as described above, the grease in the grease reservoir (14) is gradually supplied to the bearing (11) in a substantially constant amount. Therefore, the grease in the grease reservoir (14) will not be scattered to the outside at the initial stage, and the grease may be replenished periodically. Further, since grease is forcibly supplied to the bearings (11) of the four shafts (10a) in a substantially constant amount, these bearings (1)
The oil can be evenly added to 0).

なお、十字軸体(10)が停止したときに可動棒(25)および
可動受け皿(27)が最内端位置に戻るのを確実にするため
に、固定受け皿(21)の底と可動受け皿(27)の大径グリー
ス受け部(27b)の底の間などに圧縮コイルばねを設けて
もよい。このとき、ばねの強さは、十字軸体(10)が回転
したときに可動棒(25)および可動受け皿(27)が遠心力に
よりばね力に打勝って確実に最外端位置まで移動できる
程度のものにする。また、ユニバーサルジョイントの他
の部分の構成も、上記実施例のものに限らず、適宜変更
可能である。たとえば、可動受け皿(27)の小径グリース
受け部(27a)と大径グリース受け部(27b)を連通するグリ
ース通路は、筒体(23)の内端部側に穴をあけたり、筒体
(23)の内端部外周面または小径グリース受け部(27a)の
内周面にみぞを設けたりすることにより形成することも
できる。In addition, in order to ensure that the movable rod (25) and the movable tray (27) return to the innermost end position when the cross shaft (10) stops, the bottom of the fixed tray (21) and the movable tray ( A compression coil spring may be provided between the bottoms of the large diameter grease receiving portions (27b) of 27). At this time, the spring strength is such that when the cross shaft body (10) rotates, the movable rod (25) and the movable saucer (27) overcome the spring force by the centrifugal force and can surely move to the outermost end position. Make something of a degree. Further, the configurations of the other parts of the universal joint are not limited to those in the above-described embodiment, and can be changed as appropriate. For example, the grease passage that connects the small-diameter grease receiving portion (27a) and the large-diameter grease receiving portion (27b) of the movable tray (27) may have a hole on the inner end side of the cylinder (23) or
It can also be formed by providing a groove on the outer peripheral surface of the inner end portion of (23) or the inner peripheral surface of the small diameter grease receiving portion (27a).

発明の効果 この発明による潤滑装置は、上述の構成を有するので、
十字軸体が起動、停止を繰返すことにより、十字軸体の
グリース溜め内のグリースを各軸の軸受にほぼ一定量ず
つ強制的に供給することができる。このため、４つの軸
の軸受に均等に給脂することができ、しかもグリース溜
め内のグリースが初期段階で外部に飛散してしまうよう
なことがない。したがって、比較的長時間にわたって高
い潤滑効果を発揮することができ、定期的にグリースを
補給するだけですむ。Effects of the Invention Since the lubricating device according to the present invention has the above-mentioned configuration,
By repeating the start and stop of the cross shaft body, the grease in the grease reservoir of the cross shaft body can be forcibly supplied to the bearings of the respective shafts in a substantially constant amount. Therefore, the bearings of the four shafts can be evenly lubricated, and the grease in the grease reservoir will not be scattered outside at the initial stage. Therefore, it is possible to exert a high lubrication effect for a relatively long time, and it is only necessary to replenish the grease periodically.

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

第１図はこの発明の実施例を示す潤滑装置の主要部の垂
直断面図、第２図は第１図と同じ部分の異なる状態を示
す垂直断面図、第３図は潤滑装置が設けられたユニバー
サルジョイントの十字軸体の一部を示す垂直断面図であ
る。 (10)…十字軸体、(10a)…軸、(11)…軸受、(12)…ヨー
ク、(14)…グリース溜め、(15)グリース穴、(15a)…バ
ルブ収容部、(20)…グリースバルブ、(21)…固定受け
皿、(22)…穴、(23)…筒体、(24)…グリース通路、(25)
…可動棒、(26)…栓、(27)…可動受け皿、(27a)…小径
グリース受け部、(27b)…大径グリース受け部。FIG. 1 is a vertical sectional view of a main portion of a lubricating device showing an embodiment of the present invention, FIG. 2 is a vertical sectional view showing a different state of the same portion as FIG. 1, and FIG. 3 is provided with a lubricating device. It is a vertical sectional view showing a part of cross shaft body of a universal joint. (10) ... Cross shaft body, (10a) ... Shaft, (11) ... Bearing, (12) ... Yoke, (14) ... Grease reservoir, (15) Grease hole, (15a) ... Valve housing, (20) … Grease valve, (21)… Fixed pan, (22)… Hole, (23)… Cylindrical body, (24)… Grease passage, (25)
… Movable rod, (26)… Plug, (27)… Movable pan, (27a)… Small diameter grease receiving part, (27b)… Large diameter grease receiving part.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】十字軸体(10)の各軸(10a)の外端部に軸受
(11)を介してヨーク(12)が回転自在に連結されているユ
ニバーサルジョイントにおいて、 十字軸体(10)の中心部に設けられたグリース溜め(14)
と、 このグリース溜め(14)から各軸(10a)の外端面に達す
るグリース穴(15)と、 各軸(10a)のグリース穴(15)の外端部にはめ止めら
れ、かつ外端部側が開口し内端部側の底の中心部に穴(2
2)が形成された固定受け皿(21)と、 この固定受け皿(21)の底の穴(22)に、少なくとも内端
部側に突出すように設けられた筒体(23)と、 この筒体(23)の中に、内外方向に移動しうるように隙
間をあけて挿入された可動棒(25)と、 この可動棒(25)の外端部に設けられ、筒体(23)の外端
部を開閉する栓(26)と、 可動棒(25)の内端部に可動棒(25)とともに所定範囲を
内外方向に移動しうるように連結され、かつ外端部側が
開口し、筒体(23)の内端部側の外周に摺動自在にはめら
れた小径グリース受け部(27a)と小径グリース受け部(27
a)の外端部側にあってグリース穴(15)の内径より小さい
外径を有する大径グリース受け部(27b)とからなる可動
受け皿(27)と、 筒体(23)の内端部と可動受け皿(27)の間に形成され、
小径グリース受け部(27a)と大径グリース受け部(27b)を
連通するグリース通路(24)と を備えており、 可動棒(25)および可動受け皿(27)が最も内端部側に移動
したときに栓(26)が閉じて筒体(23)のグリース通路(24)
が開き、可動棒(25)および可動受け皿(27)が最も外端部
側に移動したときに栓(26)が開いて小径グリース受け部
(27a)の周壁により筒体(23)のグリース通路(24)が塞が
れ、かつ大径グリース受け部(27b)の外端部と固定受け
皿(25)の底との間に常時一定以上の隙間が保たれるよう
になされているユニバーサルジョイントにおける潤滑装
置。1. A bearing at the outer end of each shaft (10a) of the cross shaft body (10).
In a universal joint in which the yoke (12) is rotatably connected via (11), a grease reservoir (14) provided at the center of the cross shaft body (10).
The grease hole (15) that reaches the outer end surface of each shaft (10a) from this grease reservoir (14) and the outer end of the grease hole (15) of each shaft (10a), Side is open and there is a hole (2
2) formed with a fixed tray (21), a cylindrical body (23) provided in a hole (22) at the bottom of the fixed tray (21) so as to project at least to the inner end side, A movable rod (25) inserted in the body (23) with a gap so that it can be moved inward and outward, and a movable rod (25) provided at the outer end of the movable rod (25). A plug (26) for opening and closing the outer end is connected to the inner end of the movable rod (25) so as to be movable inward and outward in a predetermined range together with the movable rod (25), and the outer end is opened, Small diameter grease receiving part (27a) and small diameter grease receiving part (27
A movable tray (27) consisting of a large diameter grease receiving portion (27b) having an outer diameter smaller than the inner diameter of the grease hole (15) on the outer end side of a) and the inner end portion of the tubular body (23). Formed between the movable saucer and the movable saucer (27),
It has a grease passage (24) that connects the small diameter grease receiving portion (27a) and the large diameter grease receiving portion (27b), and the movable rod (25) and the movable tray (27) have moved to the innermost end side. Sometimes the plug (26) closes and the grease passage (24) in the barrel (23)
When the movable rod (25) and the movable tray (27) move to the outermost end side, the plug (26) opens and the small diameter grease receiver is opened.
The peripheral wall of (27a) closes the grease passage (24) of the cylindrical body (23), and the gap between the outer end of the large-diameter grease receiving portion (27b) and the bottom of the fixed tray (25) is always above a certain level. Lubricator in a universal joint designed to keep the gap between.
JP61122485A 1986-05-27 1986-05-27 Lubricating device for universal joint Expired - Lifetime JPH063216B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61122485A JPH063216B2 (en) 1986-05-27 1986-05-27 Lubricating device for universal joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61122485A JPH063216B2 (en) 1986-05-27 1986-05-27 Lubricating device for universal joint

Publications (2)

Publication Number Publication Date
JPS62278317A JPS62278317A (en) 1987-12-03
JPH063216B2 true JPH063216B2 (en) 1994-01-12

Family

ID=14837013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61122485A Expired - Lifetime JPH063216B2 (en) 1986-05-27 1986-05-27 Lubricating device for universal joint

Country Status (1)

Country Link
JP (1) JPH063216B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04128532U (en) * 1991-05-17 1992-11-24 株式会社アツギユニシア universal joint
US5389039A (en) * 1993-04-14 1995-02-14 The Zeller Corporation Universal joint lubricant retainer
US7037199B2 (en) * 2004-01-16 2006-05-02 Federal-Mogul World Wide, Inc. Universal joint washer baffle
JP2005344857A (en) * 2004-06-03 2005-12-15 Koyo Seiko Co Ltd Cross-shaped shaft joint
WO2005119106A1 (en) 2004-06-03 2005-12-15 Jtekt Corporation Seal structure and cross shaft coupling
US7140965B2 (en) * 2004-07-07 2006-11-28 Torque-Traction Technologies Llc Lubrication system for a universal joint cross
IT202000022045A1 (en) * 2020-09-18 2022-03-18 Bondioli & Pavesi S P A SPIDER FOR CARDAN JOINT, CARDAN JOINT INCLUDING THE CARDAN JOINT, AND CARDAN SHAFT INCLUDING THE CARDAN JOINT

Also Published As

Publication number Publication date
JPS62278317A (en) 1987-12-03

Similar Documents

Publication Publication Date Title
US4547081A (en) Dynamic pressure type fluid bearing
US4798476A (en) Dynamic pressure type fluid bearing
JPH063216B2 (en) Lubricating device for universal joint
US4209178A (en) Lubricant seal
US4445875A (en) Universal joint
US2445432A (en) Bearing assembly
JP4670818B2 (en) Hydrodynamic bearing device and motor equipped with the same
US5389039A (en) Universal joint lubricant retainer
USRE30790E (en) Universal joint lubrication
US4753541A (en) Sealed thrust bearing
US2221725A (en) Spindle and mounting
JPH033805B2 (en)
JPS6327255B2 (en)
JP2572926Y2 (en) Oil supply device
US9863472B2 (en) Lubrication system and method for a ball bearing
KR100457468B1 (en) hermetic centrifugal hydraulic bearing method
JPH11280770A (en) Double row bearing for outer ring rotation
JPS5850106Y2 (en) Cross universal joint lubricant retainer
JPH11108053A (en) Motor bearing structure
JPS6350487Y2 (en)
US4346680A (en) Apparatus for and method of lubricating a distributor for an internal combustion engine
JPS646415Y2 (en)
JPS6314133Y2 (en)
KR200238926Y1 (en) Preventing system of oil leakage of the axial flow fan
JPS6221777Y2 (en)