WO1981002046A1 - Raccords de transmission de puissance rotative - Google Patents

Raccords de transmission de puissance rotative Download PDF

Info

Publication number
WO1981002046A1
WO1981002046A1 PCT/AU1981/000001 AU8100001W WO8102046A1 WO 1981002046 A1 WO1981002046 A1 WO 1981002046A1 AU 8100001 W AU8100001 W AU 8100001W WO 8102046 A1 WO8102046 A1 WO 8102046A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
shaft
housing
operative
groove
Prior art date
Application number
PCT/AU1981/000001
Other languages
English (en)
Inventor
J Wilson
Original Assignee
Hoogandyk K
J Wilson
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 Hoogandyk K, J Wilson filed Critical Hoogandyk K
Priority to AU67026/81A priority Critical patent/AU6702681A/en
Publication of WO1981002046A1 publication Critical patent/WO1981002046A1/fr

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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • This invention relates to connectors and in particular to connectors adapted to bring together two members for the transmission of rotary power from one to the other.
  • the power source may be a small liquid fuelled internal combustion engine and it is required that there be a power takeoff to a submersible pump, or a concrete vibrator, power saw or other tool, at a location at which it would be inconvenient to locate or handle) because of the weight or environment) the power source.
  • the power source has a drive shaft which, in rotating, supplied the power. It is generally provided (in conjunction with the shaft which is to be driven) with some clutching device such as a key and keyway, splined arrangement, or dog clutch.
  • the connector comprises, bell hou'sing 1, and trigger mechanism 2 ⁇ *- - ⁇ consisting of a spiral pin 3, spring 4 and rtafl'dal'ly ' • operable trigger 5.
  • the power unit 11 is the petrol- motor which is mounted to base frame 22 via subframe
  • Item 8 is a dog clutch which is slidingly fitted to shaft 10a of power unit 11 and fixed in position thereon longitudinally by tightening set screws 9. Key 10 engages keyways in shaft 10a and dog clutch 8, thus fixing the relative angular position of these two members.
  • Bell housing 1 is mounted to unit 11 by means of a plurality of bolts/washers, 6/7, passing through holes 6a in its base into threaded holes 7a on unit 11.
  • the shaft to be connected passes into the open end of bell housing 1 to mate with clutch 8.
  • clutch 8 and the mating portion on the driven shaft are exemplary only of the type of connection.
  • a splined drive arrangement or any other form of driving arrangement could be used.
  • the driven shaft is usually of the flexible type; the power unit could be an electric motor; however, these matters do not affect the present invention which resides in the connection itself. in operation, the connector above works as follows.
  • Bell housing 1 has an opening la which receives trigger 5 and allows it to extend to the distal side and therethrough, where it is held by spiral pin 3, so that it cannot fall out. Opening la intersects the inside (cylindrical) surface of bell housing 1 to form slot 5d.
  • Trigger 5 comprises a handle 5a, circular- cross-sectioned shank 5b, and a bight portion 5c. The surf ce of bight 5c is so shaped and positioned on trigger 5 that when the latter is in its assembled position, it can be rotated whereby bight 5c closes off slot 5d to complete the inside cylindrical surface .
  • the driven shaft In this position of the trigger, the driven shaft can be fitted into the open end of the bell housing.
  • the end of the driven shaft is of circular cross-section and when the driven shaft is in its clutched position with shaft 10a, an annular bight therein, (or rectangular cross-section) is aligned with the shank 5b of trigger 5.
  • Normally spring 4 rotates shank 5b so that bight 5c is facing outwardly, and the part circular portion of the shank will then extend along slot 5d and protrude into the annular bight on the driven shaft, thus locking it into operational position, but leaving it free to rotate.
  • the driven shaft By rotating trigger 5 against the spring 4, the driven shaft will be freed for removal from its operational position.
  • the assembly In its locked position, the assembly rapidly wears away shank 5b of the trigger 5, owing to the lack of sufficient bearing area as would be provided, for example, by a rectangular shanked trigger fitting into the bight on the driven shaft. This is particularly so where any vibrator type tool is being driven as a proportion of the vibration is transmitted back up the shaft and hence to the restricted bearing area between the shaft and trigger shank.
  • the maximum bearing area would be obtained if the trigger shank had the same cross- sectional shape as that of the bight in the shaft to be driven. Obviously, this is not simply a matter of squaring off the shank of the trigger as it could not then be rotated into position in the bight, unless there was excessive clearance, which would of course aggravate the present problem. It is therefore the object of the present invention to provide a connector devide for positioning a driven shaft into coupling proximity with the drive shaft of a power unit which does not suffer from the above problems.
  • the invention comprises a connector adapted to couple a rotary output shaft of a power source to a working shaft, wherein the ends of said shafts to be coupled include mutual engagement torque transmitting means, and the end of said working shaft to be coupled includes an annular groove therein, said connector comprising an open ended 0 tubular housing adapted to receive said shafts in end to end position whereby said torque transmitting means engage, means on said housing to fix said housing to said power source, a member movable between an operative and an inoperative position, 5 said member in said operative position engaging in said groove whereby in use to maintain said shafts in engagement, and in said inoperative position being free of said groove whereby, in use, said working shaft can be disengaged and removed 0 from said housing, means to move said member between said operative and inoperative positions and the position of said member which engages said groove having a cross-section complementary to that of the groove.
  • Figures 2 and 3 are front elevations (respectively in unlocked and locked positions) of the connector 0 of the invention
  • the connector comprises a 5 cylindrical portion 23 mounted on a base 24, adapted to be fixed to a power unit with the output drive shaft protruding thereinto.
  • the connector can be mounted to the power unit by any suitable means, for example, studs, or nuts and bolts.
  • Portion 25 of the connector provides apertures 30 to hold the locking handle 26, which is to serve the same purpose as the trigger 5 of Figure 1.
  • the legs of the locking handle 26 protrude from the portion 23 and terminate in threaded portions to which are affixed nuts 27. Springs 28, compressed between nuts 27 and the end walls of recesses 31, bias handle 26 into the locking position as shown in Figures 3 and 4.
  • the shaft to be driven is a running fit in the cylindrical portion 23, and has an annular bight of rectangular cross-section at a position near its end corresponding to that the locking handle 26.
  • the latter includes a portion 29 which limits the travel of the locking handle 26 laterally into the apertures 30 by engaging an external wall of the portion 23.
  • the locking handle also includes members 29a which are adapted to engage in the bight of the driven shaft when it is locked in operational position. Members 29a are formed so that they have a rectangular cross-sectional portion complementary to the cross-section of the shaft bight protruding into the cylindrical bore of portion 23. (See Figure 3.) In this way a large bearing area is provided to accommodate any longitudinal forces transmitted along the driven shaft.
  • locking handle 26 has only one arm, and there is therefore only one member 29a. Nevertheless this provides a substantial improvement over the prior art device in view of the increased bearing area provided.
  • members 29a are separate from handle 26, and each is pivotally mounted at one of its ends in portion 25 about an axis, parallel to that of the shaft. They are biased radially outwardly by spring means to be outside the base of portion 23. The legs of the handle 26 diverge towards the threaded ends so that as springs 28 pull handle inwardly, the gap between the legs diminishes and in bearing on members 29a, the legs force them radially inwardly to their locking positions against the action of their biasing spring means.
  • yet another embodiment uses a rotary trigger action as in the prior art device.
  • the shank of the trigger 5 (see Figure 1) is cranked or formed with an eccentric cam-shaped cross-section; a member equivalent to member 29a is either pivotted as in the last mentioned embodiment, or mounted so as to be slidable at right angles to its length, and radially inwardly of the bore or portion 23, i.e. referring to Figure 3 for clarity, a member 29a would slide in the plane of the drawing bent at right angles to the direction of sliding in the embodiment of this Figure.
  • member 29a would be biased radially outwardly away from a locking position by spring means. On rotation of the trigger, its cranking or camming action would force member 29a into the locking position.
  • the cross-section of the locking members need not necessarily be rectangular; as long as it complements the cross-section of the driven shaft bight an improved bearing area is provided compared to the prior art devices.
  • the invention comprehends within its scope protection not only for the connector per se but a power unit including the connector of the invention mounted thereon.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

Raccords destines a maintenir en accouplement un arbre de sortie rotatif d'un moteur et un arbre de rallonge entraine (generalement flexible) pour entrainer a distance des outils, pompes et autres equipements. Le raccord possede une partie (23) ayant un alesage cylindrique pour recevoir les deux arbres en engagement d'accouplement en bout-a-bout en fonctionnement. Le raccord possede une partie de base (24) pour son montage sur le moteur. Une partie (25) qui s'etend autour de la partie (23) possede des ouvertures (30) recevant les pattes d'une poignee de verrouillage (26) qui passe au travers de la partie (25) et se termine dans des sections filetees sur lesquelles des ecrous (27) maintiennent des ressorts (28) prisonniers, poussant ainsi la poignee dans une position de verrouillage. Dans cette position, des parties de projection (29a) sur les pattes de la poignee (26) s'etendent dans l'alesage de la partie (23) et peuvent s'engager dans une gorge annulaire sur l'arbre entraine, maintenant ainsi ce dernier dans l'alesage. La gorge possede une section rectangulaire qui correspond a la section des parties (29a). La poignee (26) se deplace transversalement par rapport a l'alesage.
PCT/AU1981/000001 1980-01-07 1981-01-07 Raccords de transmission de puissance rotative WO1981002046A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67026/81A AU6702681A (en) 1980-01-07 1981-01-07 Connectors for transmission of rotary power

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPE191980 1980-01-07
AU1919/80 1980-01-07

Publications (1)

Publication Number Publication Date
WO1981002046A1 true WO1981002046A1 (fr) 1981-07-23

Family

ID=3768396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1981/000001 WO1981002046A1 (fr) 1980-01-07 1981-01-07 Raccords de transmission de puissance rotative

Country Status (2)

Country Link
EP (1) EP0043374A1 (fr)
WO (1) WO1981002046A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU877146A (en) * 1946-12-17 1947-01-23 Bendix Aviation Corporation A readily disconnectable dutch for transmitting rotary motion
US3357206A (en) * 1965-09-30 1967-12-12 Deere & Co Power take-off shaft coupling
US3686896A (en) * 1969-09-29 1972-08-29 Smiths Industries Ltd End fittings for flexible drive cables
DE2735002A1 (de) * 1976-08-06 1978-02-09 Yoshida Kogyo Kk Kupplung
US4091640A (en) * 1976-08-19 1978-05-30 Rockwell International Corporation Power drive yoke

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU877146A (en) * 1946-12-17 1947-01-23 Bendix Aviation Corporation A readily disconnectable dutch for transmitting rotary motion
AU6010860A (en) * 1960-05-05 1960-11-10 Berfield Engineering Limited Improvements in or relating to torque limiting clutches
AU6772060A (en) * 1960-12-20 1962-12-20 Kenwood Manufacturing (woking ) Limited Improvements in and relating to quick release catches
AU274061A (en) * 1961-03-21 1963-02-07 Fordham Pressings Limited and Jack Fordham Parker Detachable wheels for lightweight vehicles
AU5467365A (en) * 1964-07-22 1966-08-04 Jordon Davis Charles Reversible torque-separable drill pipe coupling
US3357206A (en) * 1965-09-30 1967-12-12 Deere & Co Power take-off shaft coupling
US3686896A (en) * 1969-09-29 1972-08-29 Smiths Industries Ltd End fittings for flexible drive cables
DE2735002A1 (de) * 1976-08-06 1978-02-09 Yoshida Kogyo Kk Kupplung
US4091640A (en) * 1976-08-19 1978-05-30 Rockwell International Corporation Power drive yoke

Also Published As

Publication number Publication date
EP0043374A1 (fr) 1982-01-13

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Designated state(s): AU DE GB JP US

AL Designated countries for regional patents

Designated state(s): FR