JPH02225825A - Universal coupling - Google Patents

Universal coupling

Info

Publication number
JPH02225825A
JPH02225825A JP4514389A JP4514389A JPH02225825A JP H02225825 A JPH02225825 A JP H02225825A JP 4514389 A JP4514389 A JP 4514389A JP 4514389 A JP4514389 A JP 4514389A JP H02225825 A JPH02225825 A JP H02225825A
Authority
JP
Japan
Prior art keywords
driving force
slide guide
groove
rotating shaft
arm
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.)
Pending
Application number
JP4514389A
Other languages
Japanese (ja)
Inventor
Sadatomo Kuribayashi
定友 栗林
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.)
K Seven Co Ltd
Original Assignee
K Seven Co Ltd
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 K Seven Co Ltd filed Critical K Seven Co Ltd
Priority to JP4514389A priority Critical patent/JPH02225825A/en
Publication of JPH02225825A publication Critical patent/JPH02225825A/en
Pending 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
    • F16D3/44—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs
    • F16D3/46—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs each coupling part embracing grooves or ridges on the intermediate member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)

Abstract

PURPOSE:To enable transmission of relatively large driving force with simple structure and in small size by providing driving force transmission members in which each of arc surfaces of the first and the second slide parts are at right angles to each other and by having each of the slide parts of both the transmission members fitted and held by a guide groove of the end of a rotary axis respectively. CONSTITUTION:When a driving axis 2 is rotated, turning effect is transmitted to a driven axis 4 through an arm 6, a driving force transmission member 10 and an arm 8. Here, as the arms 6 and 8 and driving force transmission member transmits the driving force through a large surface, face pressure is reduced and relatively large driving force can be transmitted even though the size is small. Next, in the state where a cover part 6b is taken out of a main body part 6a of the arm 6 and a cover part 8b is taken out of a main body part 8a of the arm 8 in a universal coupling, the first slide part 10a and the second slide part 20b of the driving force transmission member 10 are arranged at predetermined positions of the main body parts 6a and 6b respectively. If can be easily assembled by fixing the cover pat 6b to the main body part 6a after that.

Description

【発明の詳細な説明】 【産業上の利用分野】 本発明は自在軸継手に関し、特に構造簡単で且つ比較的
大きな駆動力伝達の可能な自在軸継手に関する。 ［従来の技術及び発明が解決しようとする課題］従来、
自在軸継手は原動軸と従動軸とが角度（１１手角）をな
す各種回転駆動力伝達機構において広く利用されている
。この様な継手の代表的なものとしていわゆるフック型
の自在軸継手がある。 しかして、フック型の継手は原動軸端部と従動軸端部と
の間に駆動力伝達のための十字形の部材を配置し、該駆
動力伝達部材の一方の対向する２箇所の端部を軸受構造
により原動軸端部に接続し且つ他方の対向する２箇所の
端部を軸受構造により従動軸端部に接続しており、結局
４つの軸受構造を介して駆動力の伝達がなされている。 従って、この継手では上記４つの軸受部に集中的に応力
がかかり、比較的大きな駆動力を伝達するためには該軸
受を頑丈且つ大きなものとする必要がある。 そこで、本発明は、上記従来技術の問題点に鑑み、構造
が簡単で且つ小型でも比較的大きな駆動力伝達の可能な
新規自在軸継手を提供することを目的とするものである
。 ［課題を解決するための手段］ 本発明によれば、以上のような目的を達成するものとし
て、 第１の回転軸と第２の回転軸とを接続する自在軸継手に
おいて、第１の回転軸及び第２の回転軸の端部の内面に
はそれぞれその回転中心を含む面内にて該回転中心方向
を横切る方向のまわりに円弧状に延びている駆動力伝達
部材用スライドガイド溝が設けられており、上記第１の
回転軸端部のスライドガイド溝内に適合する円弧状の第
１スライド部と上記第２の回転軸端部のスライドガイド
溝内に適合する円弧状の第２スライド部とをもち且つ第
１スライド部の円弧面と第２スライド部の円弧面とが実
質上直交する駆動力伝達部材を有し、更に該駆動力伝達
部材の第１スライド部及び第２スライド部をそれぞれ上
記第１及び第２の回転軸の端部のスライドガイド溝に適
合保持させる手段を有することを特徴とする、自在軸継
手、が提供される。 本発明においては、上記駆動力伝達部材の第１スライド
部及び第２スライド部をそれぞれ上記第１及び第２の回
転軸の端部のスライドガイド溝に適合保持させる手段と
して、（ａ）上記第１及び第２の回転軸の端部のスライ
ドガイド溝なそれぞれ１８０度を越える角度にわたって
円弧状に延ばしてなるもの、（ｂ）上記第１及び第２の
回転軸の端部のスライドガイド溝内の側壁に該溝の円弧
に沿って形成された回転軸側補助溝と該回転軸側補助溝
に対応して上記駆動力伝達部材に形成された伝達部材側
補助溝との間に円弧状部材を配置してなるもの、または
（Ｃ）上記第１及び第２の回転軸の端部を弾力性引っ張
り部材で連結してなるもの５を用いることができる。 ［実施例］ 以下１図面を参照しながら本発明の具体的実施例を説明
する。 第１図は本発明による自在軸継手の第１の実施例を示す
概略分解斜視図であり、第２図はその組立状態を示す斜
視図である。 これらの図において、２は原動軸であり、２′はその回
転中心である。また、４は従動軸であり、４′はその回
転中心である。これら原動軸２と従動軸４とは互いに一
端部が対向し且つ回転中心２’　、４′が合致してＸ方
向となる様に配置されている。 原動軸２の先端にはｘ−ｙ面に沿ってアーム６が形成さ
れている。該アームは原動軸回転中心２′に関し対称的
であり、原動軸２と一体的な主体部分６ａ及び該主体部
分に対しビス止めにより着脱可能に取付けられたカバ一
部分６ｂよりなる。該主体部分６ａとカバ一部分６ｂか
らなるアーム６の内側には駆動力伝達部材１０のための
スライドガイド溝７が形成されている。該満は２方向中
心軸のまわりに円弧状に形成されており、該円弧の形状
は上記中心軸に対して張る角度がほぼ２９０度であり、
また溝の断面形状は矩形状である。 従動軸４の先端にはＸ−Ｚ面に沿ってアーム８が形成さ
れている。該アームは従動軸回転中心４′に関し対称的
であり、従動軸４と一体的な主体部分８ａ及び該主体部
分に対しビス止めにより着脱可能に取付けられたカバ一
部分８ｂよりなる。該主体部分８ａとカバ一部分８ｂか
らなるアーム８の内側には駆動力伝達部材１０のための
スライドガイド溝９が形成されている。該満はｙ方向中
心軸のまわりに円弧状に形成されており、該円弧の形状
は上記中心軸に対して張る角度がほぼ２９０度であり、
また溝の断面形状は矩形状である１以上の様に、従動軸
側のアーム８は上記原動軸側のアーム６と同等の構成を
有する。 駆動力伝達部材１０は上記原動軸側のスライド溝７に適
合する第１スライド部１０ａと上記従動軸側のスライド
溝９に適合する第２スライド部ｌＯｂとを有する。第１
スライド部１０ａは上記スライドガイド溝７に対し２方
向のまわりに相対的にスライド可能であり、上記従勲軸
側アーム８の溝側壁部を受入れる部分を除いてほぼ円形
である。第２スライド部Ｊｏｂは上記スライドガイド溝
９に対しｙ方向のまわりに相対的にスライド可能であり
、上記原動軸側アルムロの溝側壁部を受入れる部分を除
いてほぼ円形である。従って、第１スライド部１０ａと
第２スライド部ｆｏｂとは９０度傾いている。 以上により原動軸２と従動軸４とは駆動力伝達部材１０
の中心（即ち、第１スライド部１０ａの２方向中心軸と
第２スライド部１０ｂのｙ方向中心軸との交点）を通る
２つの方向のまわりに関し独立に相対的に回動自在とさ
れており、か（して自在軸継手の機能が発揮される。 第３図は上記実施例の動作状態の説明図である。 第３図において、原動軸２に対し従動軸４が２方向のま
わりに角度αだけ傾けられている。これにともない、駆
動力伝達部材ｌＯも２方向のまわりに角度ａだけ傾けら
れている。 本実施例では、上記傾き角度αの最大値はほぼ３５度で
ある。 本実施例において、原動軸２が回転すると、その回転力
はアーム６、駆動力伝達部材１０及びアーム８を経て従
動軸４へと伝達される。この際、アーム６．８と駆動力
伝達部材とは広い面を介して駆動力伝達を行なうので１
面圧が小さ（なり、このため小型でも比較的大きな駆動
力伝達を行なうことが可能となる。 以上の様な本実施例の自在軸継手は、第１図に示されて
いる様に、アーム６の主体部分６ａからカバ一部分６ｂ
を取外し且つアーム８の主体部分８ａからカバ一部分８
ｂを取外した状態から、主体部分６ａ、６ｂの所定の位
置にそれぞれ駆動力伝達部材１０の第１スライド部１０
ａ及び第２スライド部１０ｂを配置し、しかる後に主体
部分６ａに対しカバ一部分６ｂを固定し主体部分８ａに
対しカバ一部分８ｂを固定することにより、容易に組立
てることができる。 尚１以上の工程を逆に行なうことにより、容易に自在軸
継手を分解することができる。 第４図は本発明による自在軸継手の第２の実施例を示す
概略分°解斜視図であり、第５図はその組立状態を示す
斜視図である。本図において、上記第１〜３図における
と同様の部材には同一の符号が付されている。 本実施例では、原動軸側アーム６の内側に形成されてい
るスライドガイド溝７はｙ方向中心軸のまわりに円弧状
に形成されており、該円弧の形状は上記中心軸に対して
張る角度が１８０度よりわずかに小さく、また溝の断面
形状は矩形状である。該溝の両側壁には、その円弧形状
に沿ってそれぞれ補助溝７−１．７−２が形成されてい
る。 同様に、従動軸側アーム８の内側に形成されているスラ
イドガイド溝９は２方向中心軸のまわりに円弧状に形成
されており、該円弧の形状は上記中心軸に対して張る角
度が１８０度よりわずかに小さく、また溝の断面形状は
矩形状である。該溝の両側壁には、その円ｌ１ｌＩ！形
状に沿って上記原動軸側補助溝７−１．７−２と同様の
補助溝９−１　（図示されていない）、９−２（図示さ
れていない）が形成されている。 また、駆動力伝達部材１０の第１スライド部１０ａの両
側壁には上記原動軸側の補助溝７−１゜７−２に対応し
てそれぞれ補助溝１０ａ−１，１０ａ−２（図示されて
いない）が形成されており、同様に駆動力伝達部材１０
の第２スライド部１０ｂの両側壁には上記従動軸側の補
助溝９−１．９−２に対応して補助溝１０ｂ−１，１Ｏ
ｂ−２（図示されていない）が形成されている。 そして、上記補助溝７−１．１０ａ−１の間ｉこけこれ
らの溝に適合する円弧状部材１１ａ−１が介在しており
、上記補助溝７−２，１０ａ−２の間にはこれらの溝に
適合する円弧状部材１１ａ−２が介在している。これら
円弧状部材はそれぞれ複数の部材からなり、原動軸側ア
ーム６に対して止板１２−１．１２−２を係合させるこ
とにより、全体として原動軸側の補助溝７−１．．７−
２内に保持され、−刃駆動力伝達部材１０の第１スライ
ド部１０ａの補助溝１０ａ−１，１０ａ−２に対しては
溝方向に摺動可能である。同様に、上記補助溝９−１，
１０ｂ−１の間にはこれらの溝に適合する円弧状部材１
１ｂ−１が介在しており、上記補助溝９−２，１ｏｂ−
２の間にはこれらの溝に適合する円弧状部材１ｉｂ−２
が介在している。これら円弧状部材はそれぞれ複数の部
材からなり、従動軸側アーム８に対して止板１４−１．
１４−２を係合させることにより、全体として原動軸側
の補助溝９−１．９−２内に保持され、−刃駆動力伝達
部材ｌＯの第２スライド部１０ｂの補助溝１ｏｂ−ｉ、
１ｏｂ−２に対しては溝方向に摺動可能である。 尚、上記円弧状部材として含油焼結金属材料やプラスチ
ック材料を用いることにより、潤滑油の供給を省略する
こともできる。 以上の様に、本実施例は、基本的には、駆動力伝達部材
１０の第１スライド部１０ａ及び第２スライド部ｌＯｂ
をそれぞれ第１及び第２の回転軸の端部のスライドガイ
ド溝７．９に適合保持させる手段が、回転軸側補助溝７
−１．７−２．９−１．９−２と駆動力伝達部材側補助
溝１０ａ−１，１０ａ−２，１０ｂ−１，１０ｂ−２と
の間に円弧状部材１１ａ−１，１ｌａ−２，１ｌｂ−１
，１ｌｂ−２を配置してなるものである点が、上記第１
実施例と異なるのみである。 第６図は本発明による自在軸継手の第３の実施例を示す
概略分解斜視図であり、第７図はその組立状態を示す斜
視図である０本図において、上記第１〜３図におけると
同様の部材には同一の符号が付されている。 本実施例では、原動軸側アーム６の内側に形成されてい
るスライドガイド溝７はｙ方向中心軸のまわりに円弧状
に形成されており、該円弧の形状は上記中心軸に対して
張る角度が１８０度よりわずかに小さ（、また溝の断面
形状は矩形状である。同様に、従動軸側アーム８の内側
に形成されているスライドガイド溝９は２方向中心軸の
まわりに円弧状に形成されており、該円弧の形状は上記
中心軸に対して張る角度が１８０度よりわずかに小さく
、また溝の断面形状は矩形状である。 そして、原動軸端部と従動軸端部とは、伸長状態のコイ
ルバネ１６により接続されている。即ち、該コイルバネ
の一端が原動軸２の端部に形成された溝１８内に適合さ
れており該コイルバネの他端が従動軸４の端部に形成さ
れた満２０内に適合されている。 尚、本実施例では、上記コイルスプリング１６の外側を
ゴムカバーで覆うことにより、機能部分を外部から遮断
し異物の侵入を防止することができる。 以上の様に、本実施例は、基本的には、駆動力伝達部材
１０の第１スライド部１０ａ及び第２スライド部１０ｂ
をそれぞれ第１及び第２の回転軸の端部のスライドガイ
ド満７．９に適合保持させる手段が、原動軸２の端部と
従動軸４の端部とを弾力性引っ張り部材たるコイルバネ
１６で連結してなるものである点が、上記第１実施例と
異なるのみである。 第４図は本発明による自在軸継手の第２の実施例を示す
概略分解斜視図であり、第５図はその組立状態を示す斜
視図である。 第６図は本発明による自在軸継手の第３の実施例を示す
概略分解斜視図であり、第７図はその組立状態を示す斜
視図である。 ［発明の効果Ｊ 以上の様な本発明自在軸継手によれば、回転軸端部と駆
動力伝達部材とは広い面を介して駆動力伝達を行なうの
で面圧が小さく、このため小型でも比較的大きな駆動力
伝達が可能となる。また、本発明自在軸継手は、構造が
簡単である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a universal joint, and more particularly to a universal joint that has a simple structure and is capable of transmitting a relatively large driving force. [Prior art and problems to be solved by the invention] Conventionally,
Universal joints are widely used in various rotational drive force transmission mechanisms in which a driving shaft and a driven shaft form an angle (an 11-hand angle). A typical example of such a joint is a so-called hook-type universal joint. Therefore, the hook type joint has a cross-shaped member for transmitting driving force arranged between the end of the driving shaft and the end of the driven shaft, and two opposite ends of one of the driving force transmitting members. is connected to the driving shaft end by a bearing structure, and the other two opposing ends are connected to the driven shaft end by a bearing structure, and the driving force is ultimately transmitted through the four bearing structures. There is. Therefore, in this joint, stress is concentrated on the four bearing parts, and in order to transmit a relatively large driving force, it is necessary to make the bearings strong and large. SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide a new universal shaft joint that is simple in structure, small in size, and capable of transmitting a relatively large driving force. [Means for Solving the Problems] According to the present invention, in order to achieve the above-mentioned objects, in a universal joint that connects a first rotating shaft and a second rotating shaft, the first rotating shaft A slide guide groove for the driving force transmission member is provided on the inner surface of the end of the shaft and the second rotating shaft, each extending in an arc shape in a plane including the rotation center in a direction crossing the rotation center direction. an arc-shaped first slide portion that fits within the slide guide groove at the end of the first rotating shaft; and a second arc-shaped slide that fits within the slide guide groove at the end of the second rotating shaft. and a driving force transmitting member having a circular arc surface of the first sliding part and a circular arc surface of the second sliding part substantially perpendicular to each other, and further comprising a first sliding part and a second sliding part of the driving force transmitting member. Provided is a universal joint, characterized in that it has means for fitting and holding the slide guide grooves at the ends of the first and second rotating shafts, respectively. In the present invention, as a means for fitting and holding the first sliding part and the second sliding part of the driving force transmission member in the slide guide grooves of the ends of the first and second rotating shafts, (a) (b) Slide guide grooves at the ends of the first and second rotating shafts each extending in an arc shape over an angle exceeding 180 degrees; (b) inside the slide guide grooves at the ends of the first and second rotating shafts; An arcuate member is provided between a rotating shaft side auxiliary groove formed on the side wall of the rotary shaft side along the circular arc of the groove and a transmission member side auxiliary groove formed on the driving force transmitting member corresponding to the rotating shaft side auxiliary groove. or (C) a structure 5 in which the ends of the first and second rotating shafts are connected by an elastic tension member. [Example] A specific example of the present invention will be described below with reference to one drawing. FIG. 1 is a schematic exploded perspective view showing a first embodiment of a universal joint according to the present invention, and FIG. 2 is a perspective view showing its assembled state. In these figures, 2 is the driving shaft and 2' is its center of rotation. Further, 4 is a driven shaft, and 4' is its rotation center. The driving shaft 2 and the driven shaft 4 are arranged such that one end thereof faces each other and their rotation centers 2' and 4' coincide with each other in the X direction. An arm 6 is formed at the tip of the driving shaft 2 along the xy plane. The arm is symmetrical about the driving shaft rotation center 2' and consists of a main part 6a integral with the driving shaft 2 and a cover part 6b detachably attached to the main part with screws. A slide guide groove 7 for the driving force transmitting member 10 is formed inside the arm 6 consisting of the main body portion 6a and the cover portion 6b. The arc is formed in the shape of a circular arc around a central axis in two directions, and the shape of the circular arc has an angle of approximately 290 degrees with respect to the central axis,
Further, the cross-sectional shape of the groove is rectangular. An arm 8 is formed at the tip of the driven shaft 4 along the X-Z plane. The arm is symmetrical about the rotation center 4' of the driven shaft, and includes a main body portion 8a integral with the driven shaft 4 and a cover portion 8b detachably attached to the main body portion with screws. A slide guide groove 9 for the driving force transmitting member 10 is formed inside the arm 8 consisting of the main body portion 8a and the cover portion 8b. The arc is formed in the shape of a circular arc around the central axis in the y direction, and the shape of the circular arc has an angle of approximately 290 degrees with respect to the central axis,
In addition, the cross-sectional shape of the groove is rectangular as shown in the above example, and the arm 8 on the driven shaft side has the same configuration as the arm 6 on the driving shaft side. The driving force transmission member 10 has a first slide portion 10a that fits into the slide groove 7 on the driving shaft side, and a second slide portion lOb that fits into the slide groove 9 on the driven shaft side. 1st
The slide portion 10a is slidable relative to the slide guide groove 7 in two directions, and has a substantially circular shape except for a portion that receives the groove side wall portion of the subordinate shaft side arm 8. The second slide portion Job is slidable relative to the slide guide groove 9 in the y direction, and has a substantially circular shape except for a portion that receives the groove side wall portion of the drive shaft side armuro. Therefore, the first slide part 10a and the second slide part fob are inclined at 90 degrees. As described above, the driving shaft 2 and the driven shaft 4 are connected to the driving force transmission member 10.
(i.e., the intersection of the two-direction center axis of the first slide part 10a and the y-direction center axis of the second slide part 10b) , or (thus, the function of the universal joint is exhibited. Fig. 3 is an explanatory diagram of the operating state of the above embodiment. In Fig. 3, the driven shaft 4 is rotated around the driving shaft 2 in two directions. It is tilted by an angle α.Accordingly, the driving force transmission member IO is also tilted by an angle a around two directions.In this embodiment, the maximum value of the tilt angle α is approximately 35 degrees. In this embodiment, when the driving shaft 2 rotates, its rotational force is transmitted to the driven shaft 4 via the arm 6, the driving force transmitting member 10, and the arm 8. At this time, the arm 6.8 and the driving force transmitting member 1 because the driving force is transmitted through a wide surface.
The surface pressure is small (thereby, it is possible to transmit a relatively large driving force even though it is small). 6 main part 6a to cover part 6b
Remove the cover part 8 from the main body part 8a of the arm 8.
From the state where b is removed, the first slide portion 10 of the driving force transmission member 10 is placed in a predetermined position of the main body portions 6a and 6b, respectively.
a and the second slide portion 10b, and then fixing the cover portion 6b to the main portion 6a and fixing the cover portion 8b to the main portion 8a, it can be easily assembled. Note that the universal joint can be easily disassembled by performing one or more steps in reverse. FIG. 4 is a schematic exploded perspective view showing a second embodiment of the universal joint according to the present invention, and FIG. 5 is a perspective view showing its assembled state. In this figure, the same members as in the above-mentioned Figs. 1 to 3 are given the same reference numerals. In this embodiment, the slide guide groove 7 formed inside the drive shaft side arm 6 is formed in an arc shape around the center axis in the y direction, and the shape of the arc is at an angle with respect to the center axis. is slightly smaller than 180 degrees, and the cross-sectional shape of the groove is rectangular. Auxiliary grooves 7-1 and 7-2 are formed on both side walls of the groove, respectively, along the arc shape. Similarly, the slide guide groove 9 formed inside the driven shaft side arm 8 is formed in the shape of a circular arc around the central axis in two directions, and the shape of the circular arc has an angle of 180 degrees with respect to the central axis. The cross-sectional shape of the groove is rectangular. On both side walls of the groove, the circle l1lI! Auxiliary grooves 9-1 (not shown) and 9-2 (not shown) similar to the driving shaft side auxiliary grooves 7-1 and 7-2 are formed along the shape. Further, on both side walls of the first sliding portion 10a of the driving force transmission member 10, auxiliary grooves 10a-1 and 10a-2 (not shown) are provided in correspondence to the auxiliary grooves 7-1 and 7-2 on the driving shaft side, respectively. ) is formed, and similarly the driving force transmission member 10
Auxiliary grooves 10b-1 and 1O are provided on both side walls of the second sliding portion 10b corresponding to the auxiliary grooves 9-1 and 9-2 on the driven shaft side.
b-2 (not shown) is formed. Between the auxiliary grooves 7-1 and 10a-1, an arcuate member 11a-1 that fits these grooves is interposed, and between the auxiliary grooves 7-2 and 10a-2, these An arcuate member 11a-2 that fits into the groove is interposed. Each of these arcuate members is made up of a plurality of members, and by engaging the stop plate 12-1, 12-2 with the drive shaft side arm 6, the drive shaft side auxiliary groove 7-1. ．． 7-
2, and is slidable in the groove direction with respect to the auxiliary grooves 10a-1 and 10a-2 of the first slide portion 10a of the blade driving force transmission member 10. Similarly, the auxiliary groove 9-1,
Between 10b-1 is an arc-shaped member 1 that fits these grooves.
1b-1 is interposed, and the auxiliary groove 9-2, 1ob-
An arc-shaped member 1ib-2 that fits into these grooves is arranged between 2 and 2.
is intervening. These arcuate members each consist of a plurality of members, and are connected to the driven shaft side arm 8 by the stop plate 14-1.
14-2, the whole is held within the auxiliary groove 9-1.
1ob-2 can be slid in the groove direction. Note that by using an oil-impregnated sintered metal material or a plastic material as the arcuate member, the supply of lubricating oil can be omitted. As described above, this embodiment basically consists of the first slide portion 10a and the second slide portion lOb of the driving force transmission member 10.
The means for fitting and holding the slide guide grooves 7.9 at the ends of the first and second rotating shafts is the rotating shaft side auxiliary groove 7.
-1.7-2.9-1.9-2 and the circular arc members 11a-1, 1la- between the driving force transmission member side auxiliary grooves 10a-1, 10a-2, 10b-1, 10b-2. 2,1lb-1
, 1lb-2 is arranged.
The only difference is from the embodiment. FIG. 6 is a schematic exploded perspective view showing a third embodiment of the universal joint according to the present invention, and FIG. 7 is a perspective view showing its assembled state. Similar members are given the same reference numerals. In this embodiment, the slide guide groove 7 formed inside the drive shaft side arm 6 is formed in an arc shape around the center axis in the y direction, and the shape of the arc is at an angle with respect to the center axis. is slightly smaller than 180 degrees (and the cross-sectional shape of the groove is rectangular.Similarly, the slide guide groove 9 formed inside the driven shaft side arm 8 has an arc shape around the central axis in two directions. The shape of the circular arc is slightly smaller than 180 degrees with respect to the central axis, and the cross-sectional shape of the groove is rectangular.The end of the driving shaft and the end of the driven shaft are , are connected by a coil spring 16 in an extended state, that is, one end of the coil spring is fitted into a groove 18 formed at the end of the driving shaft 2, and the other end of the coil spring is connected to the end of the driven shaft 4. In this embodiment, by covering the outside of the coil spring 16 with a rubber cover, the functional part can be isolated from the outside and the intrusion of foreign matter can be prevented. As described above, this embodiment basically consists of the first slide portion 10a and the second slide portion 10b of the driving force transmission member 10.
The means for fitting and holding the ends of the first and second rotating shafts with respect to the slide guides 7.9 is to connect the end of the driving shaft 2 and the end of the driven shaft 4 with a coil spring 16, which is an elastic tension member. The only difference from the first embodiment is that they are connected. FIG. 4 is a schematic exploded perspective view showing a second embodiment of the universal joint according to the present invention, and FIG. 5 is a perspective view showing its assembled state. FIG. 6 is a schematic exploded perspective view showing a third embodiment of the universal joint according to the present invention, and FIG. 7 is a perspective view showing its assembled state. [Effects of the Invention J According to the above-described universal shaft joint of the present invention, the driving force is transmitted between the end of the rotating shaft and the driving force transmitting member through a wide surface, so the surface pressure is small, and therefore, even if it is small, it is comparatively small. This makes it possible to transmit a large amount of driving force. Furthermore, the universal joint of the present invention has a simple structure.

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

第１図は本発明による自在軸継手の第１の実施例を示す
概略分解斜視図であり、第２図はその組立状態を示す斜
視図である。 第３図は上記実施例の動作状態の説明図である。 ２：原動軸、　　　２゛　：原動軸回転中心、４：従動
軸、　　　４′　：従動軸回転中心、６．８：アーム、 ７．９ニスライドガイド溝。 ７−１．７−２：補助溝、 ｌＯ：駆動力伝達部材、 １０ａ、１０ｂニスライド部。 １０ａ−１，１０ｂ−１：補助溝、 １１ａ−１，ｌ１ａ−２：円弧状部材、１１ｂ−１，１
ｌｂ−１円弧状部材。 第 図FIG. 1 is a schematic exploded perspective view showing a first embodiment of a universal joint according to the present invention, and FIG. 2 is a perspective view showing its assembled state. FIG. 3 is an explanatory diagram of the operating state of the above embodiment. 2: Driving shaft, 2゛: Driving shaft rotation center, 4: Driven shaft, 4': Driven shaft rotation center, 6.8: Arm, 7.9 Ni Ride guide groove. 7-1.7-2: Auxiliary groove, lO: Driving force transmission member, 10a, 10b varnish slide portion. 10a-1, 10b-1: Auxiliary groove, 11a-1, l1a-2: Arc-shaped member, 11b-1, 1
lb-1 arc-shaped member. Diagram

Claims (4)

【特許請求の範囲】[Claims] （１）第１の回転軸と第２の回転軸とを接続する自在軸
継手において、第１の回転軸及び第２の回転軸の端部の
内面にはそれぞれその回転中心を含む面内にて該回転中
心方向を横切る方向のまわりに円弧状に延びている駆動
力伝達部材用スライドガイド溝が設けられており、上記
第１の回転軸端部のスライドガイド溝内に適合する円弧
状の第１スライド部と上記第２の回転軸端部のスライド
ガイド溝内に適合する円弧状の第２スライド部とをもち
且つ第１スライド部の円弧面と第２スライド部の円弧面
とが実質上直交する駆動力伝達部材を有し、更に該駆動
力伝達部材の第１スライド部及び第２スライド部をそれ
ぞれ上記第１及び第２の回転軸の端部のスライドガイド
溝に適合保持させる手段を有することを特徴とする、自
在軸継手。(1) In a universal joint that connects a first rotating shaft and a second rotating shaft, the inner surfaces of the ends of the first rotating shaft and the second rotating shaft each have a surface that includes the center of rotation. A slide guide groove for the driving force transmitting member is provided which extends in an arc shape in a direction transverse to the direction of the rotation center, and an arc-shaped slide guide groove that fits within the slide guide groove at the end of the first rotating shaft is provided. It has a first sliding part and an arc-shaped second sliding part that fits into the slide guide groove at the end of the second rotating shaft, and the arcuate surface of the first slider and the arcuate surface of the second slider are substantially means for having a driving force transmitting member orthogonal to each other, and for fitting and holding a first sliding portion and a second sliding portion of the driving force transmitting member in slide guide grooves at the ends of the first and second rotating shafts, respectively; A universal joint characterized by having. （２）上記駆動力伝達部材の第１スライド部及び第２ス
ライド部をそれぞれ上記第１及び第２の回転軸の端部の
スライドガイド溝に適合保持させる手段が、上記第１及
び第２の回転軸の端部のスライドガイド溝をそれぞれ１
８０度を越える角度にわたって円弧状に延ばしてなるも
のである、請求項１に記載の自在軸継手。(2) Means for fitting and holding the first sliding portion and the second sliding portion of the driving force transmitting member in the slide guide grooves at the ends of the first and second rotating shafts, respectively, is provided in the first and second sliding portions. 1 slide guide groove on each end of the rotating shaft
The universal joint according to claim 1, which extends in an arc over an angle of more than 80 degrees. （３）上記駆動力伝達部材の第１スライド部及び第２ス
ライド部をそれぞれ上記第１及び第２の回転軸の端部の
スライドガイド溝に適合保持させる手段が、上記第１及
び第２の回転軸の端部のスライドガイド溝内の側壁に該
溝の円弧に沿って形成された補助溝と該補助溝に対応し
て上記駆動力伝達部材に形成された補助溝との間に円弧
状部材を配置してなるものである、請求項１に記載の自
在軸継手。(3) Means for fitting and holding the first sliding portion and the second sliding portion of the driving force transmitting member in the slide guide grooves at the ends of the first and second rotating shafts, respectively, is provided in the first and second sliding portions. An arcuate groove is formed between an auxiliary groove formed in the side wall of the slide guide groove at the end of the rotating shaft along the arc of the groove and an auxiliary groove formed in the driving force transmission member corresponding to the auxiliary groove. The universal joint according to claim 1, which is formed by arranging members. （４）上記駆動力伝達部材の第１スライド部及び第２ス
ライド部をそれぞれ上記第１及び第２の回転軸の端部の
スライドガイド溝に適合保持させる手段が、上記第１及
び第２の回転軸の端部を弾力性引っ張り部材で連結して
なるものである、請求項１に記載の自在軸継手。(4) Means for fitting and holding the first sliding portion and the second sliding portion of the driving force transmitting member in the slide guide grooves at the ends of the first and second rotating shafts, respectively, is provided in the first and second sliding portions. The universal joint according to claim 1, wherein the ends of the rotating shaft are connected by an elastic tension member.
JP4514389A 1989-02-28 1989-02-28 Universal coupling Pending JPH02225825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4514389A JPH02225825A (en) 1989-02-28 1989-02-28 Universal coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4514389A JPH02225825A (en) 1989-02-28 1989-02-28 Universal coupling

Publications (1)

Publication Number Publication Date
JPH02225825A true JPH02225825A (en) 1990-09-07

Family

ID=12711057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4514389A Pending JPH02225825A (en) 1989-02-28 1989-02-28 Universal coupling

Country Status (1)

Country Link
JP (1) JPH02225825A (en)

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