JP2575521Y2 - Tri-knob type universal joint - Google Patents
Tri-knob type universal jointInfo
- Publication number
- JP2575521Y2 JP2575521Y2 JP1992002883U JP288392U JP2575521Y2 JP 2575521 Y2 JP2575521 Y2 JP 2575521Y2 JP 1992002883 U JP1992002883 U JP 1992002883U JP 288392 U JP288392 U JP 288392U JP 2575521 Y2 JP2575521 Y2 JP 2575521Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner member
- knob
- axial
- tri
- 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 - Fee Related
Links
Landscapes
- Mechanical Control Devices (AREA)
- Pivots And Pivotal Connections (AREA)
- Flexible Shafts (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、例えば亜鉛等の溶融金
属中のように、ボール等を介しての動力伝達が行なえな
い条件下での使用に適したトリノブ型自在継手に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a triknob type universal joint suitable for use under conditions where power cannot be transmitted through a ball or the like, such as in molten metal such as zinc.
【０００２】[0002]
【従来の技術】亜鉛等の溶融金属中で二軸間の回転動力
の伝達を行なう場合、ボール等を介して動力の伝達を行
なう一般的構造の自在継手では、ボール等及びレース面
に熱痩せ等の不具合が生じ円滑な動力の伝達が行なえな
い。このため、上記条件下では、図２に示すようなボー
ル等を用いないトリノブ型自在継手が使用される。以
下、このトリノブ型自在継手の構造を同図に基づいて説
明する。2. Description of the Related Art When transmitting rotational power between two shafts in a molten metal such as zinc or the like, a universal joint having a general structure for transmitting power via a ball or the like has a heat thinning effect on the ball and the race surface. Such troubles occur and smooth transmission of power cannot be performed. For this reason, a tri-knob type universal joint that does not use a ball or the like as shown in FIG. 2 is used under the above conditions. Hereinafter, the structure of the tri-knob type universal joint will be described with reference to FIG.
【０００３】トリノブ型自在継手は、駆動軸又は従動軸
のうち、一方の軸（１）と連結される外方部材（２）内
に、他方の軸（３）と連結される内方部材（4'）を収容
して構成される。前記外方部材（２）は、内方部材
（4'）側に開口した円筒状の筒部（６）を備えるもの
で、筒部（６）には、円周等配位置の３箇所に軸方向に
沿って切欠き状の軸方向溝（７）が形成されている。一
方、前記内方部材（4'）は、略円筒状をなす基部（８）
と、基部（８）の円周等配位置の３箇所で径方向に突出
するノブ（9'）とを備える。ノブ（9'）は、中実樽状体
の一部をその軸線方向に沿って切除した如き形状をな
し、切除面（11）を外方に向けて基部（８）と一体成形
されている。このノブ（9'）を軸方向溝（７）内に挿入
すると、ノブ（9'）と軸方向溝（７）とが係合して回転
動力の伝達が行なわれる。また、ノブ（9'）の周方向の
両側部（12）は凸球面をなし、外方部材（２）と内方部
材（4'）とが相対的な角度変位をとる際に、この両側部
（12）が軸方向溝（７）に接触案内される。[0003] The tri-knob type universal joint comprises an outer member (2) connected to one shaft (1) and an inner member (3) connected to the other shaft (3). 4 '). The outer member (2) includes a cylindrical tubular portion (6) opened to the inner member (4 ') side. The tubular portion (6) has three circumferentially equidistant positions. A notch-shaped axial groove (7) is formed along the axial direction. On the other hand, the inner member (4 ') has a substantially cylindrical base (8).
And knobs (9 ') radially protruding at three positions on the base (8) at equal circumferential positions. The knob (9 ') has a shape as if a part of the solid barrel is cut along the axial direction thereof, and is integrally formed with the base (8) with the cut surface (11) facing outward. . When the knob (9 ') is inserted into the axial groove (7), the knob (9') and the axial groove (7) are engaged to transmit the rotational power. In addition, both sides (12) in the circumferential direction of the knob (9 ') form a convex spherical surface, and when the outer member (2) and the inner member (4') take a relative angular displacement, these two sides are formed. The part (12) is guided in contact with the axial groove (7).
【０００４】[0004]
【考案が解決しようとする課題】ところで、トリノブ型
自在継手では、外方部材と内方部材との間に角度変位を
付与して回転させると、内方部材の軸心と外方部材の軸
心とがノブ配列ピッチ径と二軸間の作動角に相関した量
で偏心し、振れ廻りを生じる。ここで、各ノブは、上述
のように径方向に突出した中実体であり、質量が大きい
ため、回転時に内方部材に生じる慣性モーメントも大き
くなる傾向にある。従って、従来のトリノブ型自在継手
では、振れ廻りが増幅され、継手に振動を生じる場合が
あった。このような振動は、継手自体或いは継手両端に
連結した機器・設備等に悪影響を及ぼすため、改善が要
望されていた。By the way, in the tri-knob type universal joint, when the outer member and the inner member are rotated while giving an angular displacement, the shaft center of the inner member and the shaft of the outer member are rotated. The center is eccentric by an amount correlated to the knob arrangement pitch diameter and the operating angle between the two axes, causing whirling. Here, since each knob is a solid body that protrudes in the radial direction as described above and has a large mass, the moment of inertia generated in the inner member during rotation tends to increase. Accordingly, in the conventional tri-knob type universal joint, the whirling is amplified, and the joint may sometimes vibrate. Such vibrations have an adverse effect on the joint itself or on equipment / equipment connected to both ends of the joint, and thus improvements have been demanded.
【０００５】そこで、本考案は、回転時に継手で発生す
る振動を低減させ得るトリノブ型自在継手を提供するこ
とを目的とする。Accordingly, an object of the present invention is to provide a tri-knob type universal joint capable of reducing vibration generated at the joint during rotation.
【０００６】[0006]
【課題を解決するための手段】本考案では、駆動軸又は
従動軸のうち一方の軸と連結される外方部材内に、他方
の軸と連結される内方部材を収容してなり、前記外方部
材は、円周等配位置の３箇所に切欠き状の軸方向溝が形
成された筒部を内方部材側に備え、各軸方向溝はその周
方向で相対する互いに平行な平面状の案内面を有し、前
記内方部材は、前記軸方向溝と係合する径方向に突出し
た中実一体のノブを円周等配位置の３箇所に有し、各ノ
ブの周方向の両壁が、前記軸方向溝の案内面と接触して
案内される凸球曲面をなすものにおいて、前記内方部材
の各ノブに、軸方向の孔を貫通形成することとした。According to the present invention, an outer member connected to one of a drive shaft and a driven shaft is accommodated in an outer member connected to the other shaft. The outer member is provided on the inner member side with a cylindrical portion in which notched axial grooves are formed at three circumferentially equidistant positions, and each of the axial grooves is a plane parallel to each other in the circumferential direction. The inner member has radially protruding solid integral knobs at three locations at equal circumferential positions for engaging with the axial grooves. The two walls have a convex spherical surface which is guided in contact with the guide surface of the axial groove, and each knob of the inner member has an axial hole formed therethrough.
【０００７】[0007]
【作用】内方部材の各ノブに軸方向の孔を貫通形成する
ことにより、この分だけ内方部材の質量が低減するた
め、回転時に生じる内方部材の慣性モーメントが小さく
なる。これにより、内方部材及び外方部材の軸心が偏心
して振れ廻りを生じている場合でも、振動の発生が抑制
される。By forming an axial hole through each knob of the inner member, the mass of the inner member is reduced by that amount, and the moment of inertia of the inner member generated during rotation is reduced. Thereby, even when the axes of the inner member and the outer member are eccentric and whirling, generation of vibration is suppressed.
【０００８】[0008]
【実施例】以下、本考案の実施例を図１に基づいて説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【０００９】本考案にかかるトリノブ型自在継手の基本
構造は、図２に示すものと同様であり、駆動軸又は従動
軸のうち、一方の軸（１）と連結される外方部材（２）
内に、他方の軸（３）と連結される内方部材（４）を収
容して構成されている。そして、外方部材（２）の筒部
（６）には、３つの切欠き状の軸方向溝（７）が形成さ
れ、内方部材（４）には径方向に突出する中実一体の３
つのノブ（９）が形成されている。内方部材（４）は、
先端部に段部（14）を設けた軸（３）に３個のキー（1
5）で係留・嵌合され、さらに、スリーブ（16）を介し
て２つのナット（17）で軸（３）に固定されている。各
軸方向溝（７）の周方向で相対する両壁は、互いに平行
な平面状の案内面（7a）となっており、この両案内面
（7a）にノブ（９）の周方向の両側部（12）がそれぞれ
点接触している。ノブ（９）は、外方部材（２）と内方
部材（４）とが相対的な角度変位をとる際に、この平面
状の案内面（7a）によってその移動方向を案内される。The basic structure of the tri-knob type universal joint according to the present invention is the same as that shown in FIG. 2, and an outer member (2) connected to one of the drive shaft and the driven shaft (1).
The inner member (4) connected to the other shaft (3) is accommodated therein. The notch-shaped axial groove (7) is formed in the cylindrical portion (6) of the outer member (2), and the inner member (4) is a solid unitary member that projects in the radial direction . 3
Two knobs (9) are formed. The inner member (4)
Three keys (1) are attached to the shaft (3) with a step (14) at the tip.
It is moored and fitted at 5), and is fixed to the shaft (3) with two nuts (17) via a sleeve (16). The two circumferentially opposite walls of each axial groove (7) are parallel guide surfaces (7a) which are parallel to each other. The parts (12) are in point contact with each other. When the outer member (2) and the inner member (4) take relative angular displacement, the knob (9) is guided in the moving direction by the planar guide surface (7a).
【００１０】本考案では、内方部材（４）の各ノブ
（９）に軸方向の孔（19）を貫通形成してある。これに
より、内方部材（４）が軽量化し、回転時に内方部材
（４）に生じる慣性モーメントが低減される。従って、
外方部材（２）と内方部材（４）の軸心のずれによって
振れ廻りが生じている場合でも、継手全体に生じる振動
が抑制される。また、ノブ（９）は中実一体であるか
ら、孔（19）の形成位置、形状、個数等の自由度が高
く、実際の使用状況に応じてこれらを任意に選択・決定
することができる。また、孔（19）は、継手組立前の部
品の状態のみならず、組立が完了した完成品の状態でも
形成することができ、ユーザーサイドで孔あけを行なう
ことも可能である。In the present invention, an axial hole (19) is formed through each knob (9) of the inner member (4). Thus, the weight of the inner member (4) is reduced, and the moment of inertia generated in the inner member (4) during rotation is reduced. Therefore,
Even when the whirling occurs due to the deviation of the axial center between the outer member (2) and the inner member (4), the vibration generated in the entire joint is suppressed. Further, since the knob (9) is solid and integral, the degree of freedom in the formation position, shape, number and the like of the holes (19) is high, and these can be arbitrarily selected and determined according to the actual use situation. . Further, the hole (19) can be formed not only in the state of the parts before the assembly of the joint but also in the state of the finished product after the completion of the assembly, and it is possible to make a hole on the user side.
【００１１】なお、各孔（19）は、内方部材（３）の軸
心から等距離（ｒ）に、しかも同一容積に形成する必要
があるが、この距離（ｒ）を大きくすればするほど、即
ち、各孔（19）の形成位置を切除面（11）に近接させれ
ばさせるほど、或いは容積を大きくすればするほど慣性
モーメントの低減作用がより大きく得られ、振動の発生
をより確実に抑制することができる。The holes (19) need to be formed at the same distance (r) from the axis of the inner member (3) and in the same volume, but this distance (r) can be increased. In other words, the closer the formation position of each hole (19) is to the cut surface (11), or the larger the volume, the greater the effect of reducing the moment of inertia, and the more the vibration is generated. It can be suppressed reliably.
【００１２】また、前記孔（19）の断面形状は、図示の
ようなレーストラック型に限らず、円形・矩形・楕円形
等の種々の断面形状が適用できる。The cross-sectional shape of the hole (19) is not limited to a race track type as shown in the figure, and various cross-sectional shapes such as a circle, a rectangle, and an ellipse can be applied.
【００１３】[0013]
【考案の効果】上述のように、内方部材の各ノブに軸方
向の孔を貫通形成することにより、内方部材の慣性モー
メントが小さくなり、振れ廻りがある場合でも継手で発
生する振動を抑制することができる。これによって、継
手或いは継手両端部に連結した機器・設備等への悪影響
が防止でき、各機器・設備等の信頼性が向上する。ま
た、このような効果は、従来特に振動の発生しやすかっ
た大型のトリノブ型自在継手で顕著に得られる。As described above, by forming an axial hole through each knob of the inner member, the moment of inertia of the inner member is reduced, and the vibration generated at the joint is reduced even when there is a whirling. Can be suppressed. As a result, it is possible to prevent adverse effects on the joints or the equipment / equipment connected to both ends of the joint, and improve the reliability of each equipment / equipment. Further, such an effect can be remarkably obtained with a large-sized tri-knob type universal joint in which vibration is particularly likely to occur.
【図１】本考案にかかるトリノブ型自在継手を示す図で
あり、（ａ）は側面断面図、（ｂ）は平面図、（ｃ）は
（ａ）図中のＡ−Ａ線での断面図である。FIG. 1 is a view showing a tri-knob type universal joint according to the present invention, wherein (a) is a cross-sectional side view, (b) is a plan view, and (c) is a cross section taken along line AA in FIG. FIG.
【図２】従来のトリノブ型自在継手を示す図であり、
（ａ）は側面断面図、（ｂ）は平面図、（ｃ）は（ａ）
図中のA'−A'線での断面図である。FIG. 2 is a view showing a conventional tri-knob type universal joint;
(A) is a side sectional view, (b) is a plan view, (c) is (a)
It is sectional drawing in the A'-A 'line in a figure.
１ 軸 ２ 外方部材 ３ 軸 ４ 内方部材 ６ 筒部 ７ 軸方向溝 7a 案内面 ９ ノブ 19 孔 1 shaft 2 outer member 3 shaft 4 inner member 6 cylindrical part 7 axial groove 7a guide surface 9 knob 19 hole
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16D 3/18 F16D 3/20 F16D 3/21 F16D 3/23Continued on the front page (58) Fields surveyed (Int.Cl. 6 , DB name) F16D 3/18 F16D 3/20 F16D 3/21 F16D 3/23
Claims (1)
される外方部材内に、他方の軸と連結される内方部材を
収容してなり、前記外方部材は、円周等配位置の３箇所
に切欠き状の軸方向溝が形成された筒部を内方部材側に
備え、各軸方向溝はその周方向で相対する互いに平行な
平面状の案内面を有し、前記内方部材は、前記軸方向溝
と係合する径方向に突出した中実一体のノブを円周等配
位置の３箇所に有し、各ノブの周方向の両壁が、前記軸
方向溝の案内面と接触して案内される凸球曲面をなすも
のにおいて、 前記内方部材の各ノブに、軸方向の孔を貫通形成したこ
とを特徴とするトリノブ型自在継手。An outer member connected to one of a drive shaft and a driven shaft accommodates an inner member connected to the other shaft, and the outer member has a circumference or the like. A cylindrical portion having notched axial grooves formed at three positions is provided on the inner member side, and each axial groove has a planar guide surface parallel to each other in the circumferential direction. The inner member has radially protruding solid integral knobs that engage with the axial grooves at three circumferentially equidistant positions, and both circumferential walls of each knob are arranged in the axial direction. A tri-knob type universal joint comprising a convex spherical surface which is guided in contact with a guide surface of a groove, wherein an axial hole is formed in each knob of the inner member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992002883U JP2575521Y2 (en) | 1992-01-30 | 1992-01-30 | Tri-knob type universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992002883U JP2575521Y2 (en) | 1992-01-30 | 1992-01-30 | Tri-knob type universal joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0561518U JPH0561518U (en) | 1993-08-13 |
| JP2575521Y2 true JP2575521Y2 (en) | 1998-07-02 |
Family
ID=11541762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992002883U Expired - Fee Related JP2575521Y2 (en) | 1992-01-30 | 1992-01-30 | Tri-knob type universal joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575521Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161932A (en) * | 2004-12-06 | 2006-06-22 | Ntn Corp | Tripod constant-velocity joint |
| JP5160745B2 (en) * | 2006-03-22 | 2013-03-13 | Ｎｔｎ株式会社 | Tripod type constant velocity joint |
| JP5128423B2 (en) * | 2008-09-05 | 2013-01-23 | Ｎｔｎ株式会社 | Bipod universal joint |
| JP5395236B2 (en) * | 2012-09-14 | 2014-01-22 | Ｎｔｎ株式会社 | Tripod type constant velocity joint |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124730U (en) * | 1984-07-17 | 1986-02-14 | 勇 川上 | electronically cooled camera bag |
| US4886479A (en) * | 1988-09-12 | 1989-12-12 | The Torrington Company | Universal joint including roller bearings |
| JPH0293526U (en) * | 1989-01-12 | 1990-07-25 | ||
| JPH03277824A (en) * | 1990-03-01 | 1991-12-09 | Toyota Motor Corp | Slide type constant velocity joint |
-
1992
- 1992-01-30 JP JP1992002883U patent/JP2575521Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0561518U (en) | 1993-08-13 |
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