NO124674B

NO124674B -

Info

Publication number: NO124674B
Application number: NO683419A
Authority: NO
Inventors: Sam S Riise
Original assignee: Sam S Riise
Priority date: 1968-09-03
Filing date: 1968-09-03
Publication date: 1972-05-23
Also published as: SE7503379L

Description

Koplingsanordning for utenbords propellaggregat for båter med innenbords motor. Coupling device for outboard propeller unit for boats with inboard engine.

Oppfinnelsen vedrører en bøyelig koplingsanordning mellom en innenbords i The invention relates to a flexible connection device between an inboard i

en båt anbrakt drivmotor med i det vesentlige horisontal drivaksel og et utenbords anbrakt propellaggregat. hvor propellaggregatet i virksom stilling kan svinges om en utenfor båten liggende stort sett vertikal aksel og fra denne stilling kan svinges opp til uvirksom stilling om en utenfor båten liggende stort sett horisontal akse. i hvilken stilling aggregatet kan fastholdes av et låseorgan og hvor der mellom drivmotoren og propellaggregatet er anordnet en primær, stiv kopling og en sekundær, bøyelig klokopling. a boat-mounted drive motor with an essentially horizontal drive shaft and an outboard-mounted propeller unit. where the propeller unit in an active position can be swung about a largely vertical axis outside the boat and from this position can be swung up to an inactive position about a mostly horizontal axis outside the boat. in which position the unit can be retained by a locking device and where a primary, rigid coupling and a secondary, flexible claw coupling are arranged between the drive motor and the propeller unit.

En slik kopling skal således overføre motorens dreiekraft for fremdrift av båten samtidig som denne styres og skal dessuten muliggjøre at utenbordsdelen kan svinges opp av vannet. Such a coupling must thus transmit the engine's torque for propulsion of the boat at the same time as it is steered and must also enable the outboard part to be swung out of the water.

De universalkoplinger som nå brukes til dette formål har vanligvis to med-bringertapper i hver halvdel, beliggende i en viss avstand fra akselsenter. The universal couplings that are now used for this purpose usually have two carrier pins in each half, located at a certain distance from the center of the axle.

Dette forhold bevirker at kraftoverføringen f. eks. ved styring av båten blir ujevn, og ujevnhets graden vil øke med tiltagende vinkel. Når det dertil er nødvendig å kople to slike universalledd etter hverandre for å kunne styre båten, fremkommer det kjente koplingsarrangement som er meget utsatt for skader. This condition means that the power transmission e.g. when steering the boat becomes uneven, and the degree of unevenness will increase with increasing angle. When it is necessary to connect two such universal joints one after the other in order to be able to steer the boat, the known connection arrangement appears which is very susceptible to damage.

Formålet med foreliggende oppfinnelse er å tilveiebringe et hekkpropellaggregat av ovennevnte type, hvormed de nevnte ulemper ved akselkoplingen mellom innenbords- og utenbordsdelen elimineres samtidig som nye fordeler vil fås. Koplingen ifølge oppfinnelsen er beregnet for en akselomdreiningsretning og har harde anleggsflater for å oppta dreiningskraften. I tilslutning hertil er en bøyelig aksel stadig innkoplet. The purpose of the present invention is to provide a stern thruster assembly of the above-mentioned type, with which the aforementioned disadvantages of the shaft coupling between the inboard and outboard parts are eliminated while new advantages will be obtained. The coupling according to the invention is designed for a direction of shaft rotation and has hard contact surfaces to absorb the turning force. In connection with this, a flexible shaft is constantly engaged.

Den her beskrevne utførelse vil også tillate en lett utkopling, f. eks. ved en uønsket oppsvingning av utenbordsdelen ved dennes eventuelle påstøtning av en gjenstand i sjøen. The design described here will also allow easy disconnection, e.g. in the event of an unwanted upswing of the outboard part due to its possibly hitting an object in the sea.

Kopling8anordningen ifølge oppfinnelsen kan også med fordel anvendes hvor The coupling device according to the invention can also be advantageously used where

det er to aggregater i båten " Twin screw". Her hvor det bare er en om-dreinings retning vil omkasting til "bakk" skje ved stigningsforandring av propellen. Denne er således en vripropell. De to aggregater kan derved ha fast horisontalposisjon og styringen av båten kan skje ved propellenes stignings-variasjoner. there are two aggregates in the boat "Twin screw". Here, where there is only one turning direction, reversal to "hill" will occur by changing the pitch of the propeller. This is thus a twisting propeller. The two aggregates can thereby have a fixed horizontal position and the boat can be steered by the pitch variations of the propellers.

Oppfinnelsen skal nærmere beskrives under henvisning til tegningene som viser utfør els es eksempler: Fig. 1 er et sideriss av et hekkpropellaggregat for et lystfartøy. På hekken av et skrog 11 er det anordnet et propellaggregat med en utenbordsdel 12 som drives av en i båten 11 anbrakt motor 13 som over en kopling 34 driver propellen 14 med en transmisjon 15 mellom aktre koplingsaksel 33 og propell-akselen 16. Koplingen 34 er anbrakt foran aktre koplingsaksel 33. Fra stil-lingen med propellen neddykket kan utenbordsdelen 12 svinges opp slik at propellen 14 kommer helt opp av vannet. Oppsvingningsvinkelen 17 er her 100°, Med 18 betegnes et låseorgan for å hindre oppsving under bakking. Fig. 2 viser koplingen 34 mellom de to aksler 32 og 34. Begge disse aksler har klokpplinger 34 som er i inngrep når utenbordsdelen 12 er nedsvinget. Det for sentreringen anordnede, utvendig delvis kuleformede legeme 35 er gjennom-boret for passasje av den bøyelige aksel 36 som er støttet av lagrene 37. Dreiekraften overføres ved hjelp av kile-sporanordningene 38. Med strekete linjer vises anordningens stilling når utenbordsdelen 12 er oppsvinget til vinkelen 17. Den bøyelige aksel 36 er ført ut mot lageret 37. Fig. 3 viser et snitt gjennom akslene 32 og 33. Her sees den bøyelige aksel 36 som er festet til overføringene 38. Disse følger akslene i en kilespor-funksjon. The invention shall be described in more detail with reference to the drawings showing examples of implementation: Fig. 1 is a side view of a stern thruster unit for a pleasure craft. On the stern of a hull 11, a propeller unit is arranged with an outboard part 12 which is driven by an engine 13 placed in the boat 11 which via a coupling 34 drives the propeller 14 with a transmission 15 between the aft coupling shaft 33 and the propeller shaft 16. The coupling 34 is placed in front of the aft coupling shaft 33. From the position with the propeller submerged, the outboard part 12 can be swung up so that the propeller 14 comes completely out of the water. The upswing angle 17 is here 100°, 18 denotes a locking device to prevent upswing during reversing. Fig. 2 shows the coupling 34 between the two shafts 32 and 34. Both of these shafts have clock couplings 34 which engage when the outboard part 12 is swung down. The externally partially spherical body 35 arranged for the centering is drilled through for the passage of the flexible shaft 36 which is supported by the bearings 37. The turning force is transmitted by means of the wedge-track devices 38. Dashed lines show the position of the device when the outboard part 12 is swung up to the angle 17. The flexible shaft 36 is led out towards the bearing 37. Fig. 3 shows a section through the shafts 32 and 33. Here you can see the flexible shaft 36 which is attached to the transmissions 38. These follow the shafts in a keyway function.

Claims

1. Flexible coupling device between a drive motor installed inboard of a boat with an essentially horizontal drive shaft and a propeller unit installed outboard, where the propeller unit in active position can be swung about a largely vertical axis outside the boat and from this position can be swung up to an inactive position about a largely horizontal axis lying outside the boat, in which position the unit can be held by a locking device and where a primary, rigid coupling and a secondary, flexible claw coupling are arranged between the drive motor and the propeller unit, characterized in that the secondary flexible claw coupling (34) about - comprises drilled front (3 2) and aft (33) coupling halves, in the bores of which a flexible shaft (36) which is not rotatable relative to the coupling parts (3 2, 33) but somewhat axially movable, is stored, which in the middle of the claw coupling is under -supported by an annular body (35) stored in the claws of the coupling parts with internal and external spherical surfaces and off to both sides of this in the excavations accommodated 1-acre (37).

2. Device as specified in claim 1. characterized in that the flexible shaft (36) at the secondary engagement has a twisting tension adapted so that the corresponding twisting angle produces synchronized engagement of the primary coupling.

3. Device as specified in claim 1. characterized in that the torsional tension of the flexible shaft (36) will hold the contact surfaces of the primary coupling to a certain contact against each other.

4. Device as stated in claims 2-4. characterized in that the flexible shaft (36) is made of a steel wire or a fibrous or compact plastic.