SE453176B

SE453176B - Tool for drawing line through loop

Info

Publication number: SE453176B
Application number: SE8501960A
Authority: SE
Inventors: Torsthen Martinsson
Original assignee: Torsthen Martinsson
Priority date: 1985-04-23
Filing date: 1985-04-23
Publication date: 1988-01-18
Also published as: SE8501960L; SE8501960D0

Abstract

A pick-up in the form of a hook (4) is held in position in a readiness location projecting outwards from the shaft part (1) by a stop mechanism (16) releasable by the effect of a pressure from the loop. In thislocation, the hook is connected to the shaft part only via a first connecting point. In the area of the hook free end is a coupling component (7) which acts as second connecting point, and which works in conjunction with a holder (11) on the shaft part. The free end of the hook, by drawing in the shaft part, is insertable through the loop so as to bring it to press against the stop mechanism. This releases the pick-up hook so that it can pivot relative to the shaft part to a position in which, on one side, the coupling component grips firmly into the holder, and on the other side the connection between the hook and the shaft part at the first connecting point ceases. Thus the pick-up hook can pass through the loop despite the fact that due to the through-drawing process it remains fixed to the shaft part.

Description

10 15 20 25 30 35 _ 453 176 2 spärrhaken och etablerat den erforderliga andra förbin- delsepunkten mellan medbringaren och skaftdelen och därefter förflyttats ytterligare i riktning framåt utmed skaftdelen kommer öglan i kontakt med den spärr- mekanism som har till uppgift att etablera en första förbindelsepunkt mellan medbringaren och skaftdelen. 10 15 20 25 30 35 _ 453 176 2 the pawl and established the required second connection the sub-point between the carrier and the shaft part and then moved further in the forward direction along the shaft part, the loop comes into contact with the locking mechanism responsible for establishing a first connection point between the carrier and the shaft part.

Denna spärrmekanism har formen av en i längdled fram och åter rörlig platta, vilken uppvisar dels två näsor anordnade att omgripa ett par stift på skaftdelen, dels en längsgående slits anordnad att mottaga tvenne stift hos medbringaren. Spärrplattan rör sig parallellt med skaftdelen vid påverkan av öglan, varefter plattans näsor frigörs från stiften så att medbringaren kan vid sin främre ände fjärmas från skaftdelen efter det att den erforderliga andra förbindelsepunkten etablerats. Detta kända genomdragningsdon är i praktiken komplicerat till sin uppbyggnad och därmed förhållande- vis dyrbart att tillverka. Genom denna sin komplexitet erhåller donet dålig funktionstillförlitlighet, i det att de många detaljer som ingår i donet lätt kan utsättas för skador eller störningar.This locking mechanism has the shape of a longitudinal front and again movable plate, which has two noses arranged to grip a pair of pins on the shaft part, on the other hand, a longitudinal slot arranged to receive two pin with the carrier. The locking plate moves in parallel with the shaft part under the influence of the loop, after which the plate noses are released from the pins so that the carrier can at its front end is removed from the shaft portion after that the required second connection point established. This known pull-through device is in practice complicated in its structure and thus the expensive to manufacture. Through this its complexity the device receives poor functional reliability, i that the many details included in the device can easily exposed to damage or interference.

Kort redogörelse för uppfinningstanken Föreliggande uppfinning tar sikte på att undanröja nackdelarna hos det tidigare kända lingenomdragningsdonet och skapa ett konstruktionsmässigt enkelt don vilket är billigt att tillverka och ger god funktipnstillför- litlighet. Detta ernås i enlighet med det för uppfin- ningen närmast kännetecknande därigenom att förbindel- sen i förutnämnda första punkt utgörs av dels en i medbringarkroken ingående styrning, dels ett i denna införbart bágformigt parti av skaftdelen, vilket parti till följd av sin bágform vid förskjutning av kroken i skaftdelens längdriktning samtidigt tvingar densamma att svänga med sitt kopplingsorgan i riktning mot hâllaren.Brief description of the inventive concept The present invention aims to eliminate the disadvantages of the prior art loop retractor and create a structurally simple device which is inexpensive to manufacture and provides good reliability. This is achieved in accordance with the invention characterized by the fact that the connection then in the aforementioned first paragraph consists of partly an i the carrier hook included in the steering, partly one in this insertable arcuate portion of the shaft portion, which portion due to its arcuate shape when the hook is displaced in the longitudinal direction of the shaft part at the same time forcing it to swing with its coupling member in the direction of the holder.

Kort beskrivning av bifogade ritningar På ritningarna är fig l en perspektivisk vy av ”m 10 15 20 25 30 35 453 176 3 det uppfinningsenliga donet och fig 2-6 sidovyer visande olika funktionslägen hos detsamma.Brief description of the accompanying drawings In the drawings, Fig. 1 is a perspective view of ”M 10 15 20 25 30 35 453 176 3 the device according to the invention and Figs. 2-6 show side views different operating modes of the same.

Detaljerad beskrivning av ett föredraget utförande av uppfinningen På ritningarna betecknar 1 generellt en skaftdel vilken med fördel kan ha formen av en långsträckt stång, t ex av lättmetall, vars främre del har formen av en bátshake så tillvida att densamma innefattar ett hakformigt, väsentligen vinkelrätt ut från stången sig sträckande parti 2 och ett framåt från detta sig sträckande bágformigt parti 3. I praktiken kan skaft- delens 1 längd uppgå till storleksordningen 1,5-4, lämpligen 2-3 m. Vid den främre änden av skaftdelen är monterad en medbringare generellt betecknad 4 vid vilken en lina 5 kan fästas på godtyckligt sätt. Even- tuellt är linan stadigvarande förbunden med medbringaren 4. Denna medbringare har formen av en krok och är sammansatt av tvâ sinsemellan åtskilda, parallella plattor 6,6' vilka hålls samman med hjälp av ett antal distansorgan 7,8,9,9',9“,l0. Av dessa distansorgan, vilka samtliga lämpligen har formen av förhållandevis smäckra tappar, bildar organet 7 ett kopplingsorgan avsett att samverka med en på skaftdelen l utformad hållare i form av en i ett tillplattat parti 1' av skaftdelen urtagen, väsentligen L-formig slits ll uppvisande dels ett längsgående parti ll', dels ett tvärgående parti ll". Denna slits avgränsar sålunda en näsa 12 vilken skjuter ut i riktning bakåt och bakom vilken kopplingsorganet 7 kan ta fäste. I slitsen ll finns en làskropp 13 vilken är påverkad av en fjäder 14 som normalt häller låskroppen i det i fig 1 och 2 visade läget i vilket slitspartiet ll" hålls till- slutet. Láskroppen 13 kan svängas till ett frigörande läge med hjälp av en vinkelrätt utskjutande tunga 15.Detailed description of a preferred embodiment of the invention In the drawings, 1 generally denotes a shaft part which may advantageously be in the form of an elongate rod, for example of light metal, the front of which has the shape of a boat hook to the extent that it includes a hook-shaped, substantially perpendicular to the rod extending portion 2 and a forward portion thereof extending arcuate portion 3. In practice, the shaft the length of the part 1 amounts to the order of 1.5-4, preferably 2-3 m. At the front end of the shaft part is mounted a carrier generally designated 4 at which a rope 5 can be attached in any way. Even- the line is permanently connected to the carrier 4. This carrier has the shape of a hook and is composed of two mutually separated, parallel plates 6,6 'which are held together by means of a number spacer 7,8,9,9 ', 9 ", 10. Of these spacers, all of which are suitably in the form of relatively slender pins, the member 7 forms a coupling member intended to cooperate with one designed on the shaft part 1 holder in the form of a in a flattened portion 1 'of shaft part recessed, substantially L-shaped slot ll showing partly a longitudinal portion ll ', partly one transverse portion ll ". This slit thus delimits a nose 12 which projects in the rearward direction and behind which the coupling member 7 can take hold. In the slot ll there is a locking body 13 which is actuated by a spring 14 which normally pours the locking body into that of Fig. 1 and 2 shows the position in which the slot portion 11 "is held the end. The locking body 13 can be pivoted to a release position by means of a perpendicularly projecting tongue 15.

De tre distansorganen eller tapparna 9,9',9“ bildar samfällt en styrning i vilken det bágformiga 10 15 20 25 30 35 453 176 4 främre partiet 3 av skaftdelen är instickbart. Dessa tappar är så placerade att medbringarkroken 4 i dess helhet tvångsmässigt kommer att beskriva en svängnings- rörelse så snart en relativrörelse àstadkoms mellan á ena sidan bàgpartiet 3 och à andra sidan den av tapparna bildade styrningen. Karaktären hos denna svängningsrörelse bestäms givetvis även av bágpartiets 3 geometriska form.The three spacers or pins 9,9 ', 9 " jointly forms a guide in which the arcuate 10 15 20 25 30 35 453 176 4 front part 3 of the shaft part is insertable. These pins are placed so that the carrier hook 4 in its as a whole will compulsorily describe an oscillation motion as soon as a relative motion is achieved between on one side the bow section 3 and on the other side the av the pins formed the guide. The character of this oscillating motion is of course also determined by the bow portion 3 geometric shapes.

Pâ tappen 8 är svängbart upphängt ett finger 16 vilket är påverkat av en fjäder 17 som städse strävar att svänga fingret till ett läge i vilket detsamma håller an distanstappen 9' mot en stoppklack 18 utformad vid den inre änden av bågpartiet 3. I detta läge anligger även den fria änden 19 av fingret 16 mot en stoppyta 20. Först sedan fingret svängts undan i riktning med- sols så långt att detsamma passerat den främre änden av stoppytan 20 kan svängning av medbringaren 4 relativt bagpartiet 3 påbörjas.A finger is pivotally suspended on the pin 8 16 which is affected by a spring 17 which is constantly striving to swing the finger to a position in which the same holds the spacer pin 9 'against a stop lug 18 formed at the inner end of the arc portion 3. In this position abuts also the free end 19 of the finger 16 against a stop surface 20. Only after the finger has swung away in the direction of sun so far that the same has passed the front end of the stop surface 20, pivoting of the carrier 4 can be relative the rear part 3 is started.

Pâ ritningarna betecknar 21 en tvärsektion genom en ögla genom vilken linan 5 är tänkt att föras.In the drawings, 21 denotes a cross section through a loop through which the line 5 is intended to be passed.

Uppfinningens funktion och fördelar I fig 2 visas det uppfinningsenliga donet i ett utgångsläge i vilket spärrfingret 16 säkerställer att medbringarkroken 4 kvarhålls i sitt givna läge relativt skaftdelen. Samtidigt är lâskroppen 13 i sitt läsande läge i vilket den tillsluter slitspartiet ll". Det fria ändpartiet 4' av medbringarkroken 4 sträcker sig härvid väsentligen parallellt med skaft- delen l pà något avstånd från denna under bildande av ett mottagande gap 22.Function and advantages of the invention Fig. 2 shows the device according to the invention in one initial position in which the locking finger 16 secures that the carrier hook 4 is kept in its given position relative to the shaft portion. At the same time, the locking body 13 is in its reading position in which it closes the slit portion The free end portion 4 'of the carrier hook 4 extends substantially parallel to the shaft the part l at some distance from it during formation of a receiving gap 22.

När skaftdelen 1 dras i riktning av pilen enligt fig 3 relativt öglan 21 kommer öglan att pressa in spärrfingret 16 mot verkan av fjädern 17, varigenom medbringaren 4 är fri att svänga relativt bågpartiet 3. Vid fortsatt dragning i skaftdelen tvingas med- bringaren 4 att svänga i en av bâgpartiet 3 jämte 10 15 20 453 176 ~ 5 styrningen 9,9',9" bestämd rörelsebana till dess att kopplingsorganet 7 kommer i ingrepp med slitsen 11.When the shaft part 1 is pulled in the direction of the arrow according to Fig. 3 relative to the loop 21, the loop will be pressed in the locking finger 16 against the action of the spring 17, whereby the carrier 4 is free to pivot relative to the arc portion 3. If the shaft part continues to be pulled, the the carrier 4 to pivot in one of the arc portion 3 together 10 15 20 453 176 ~ 5 control 9,9 ', 9 "determined trajectory until the coupling member 7 engages the slot 11.

Härvid pressas láskroppen 13 tillbaka och kopplings- organet 7 förs till bottnen av slitsen ll, varvid làskroppen 13 tack vare fjädern 14 automatiskt återgår till läsande läge. I detta tillstånd har styrtapparna 9 släppt från det bågformiga partiet 3, innebärande att medbringarkroken 4 är fri att svänga ut fràn skaft- delen, ehuru nu kring kopplingsorganet 7. Detta i sin tur innebär att öglan 21 kan passera mellan med- bringarkroken 4 och skaftdelens bågparti 3 under genom- dragning av linan 5 såsom illustreras i fig 5 och 6.In this case, the locking body 13 is pressed back and the clutch the member 7 is moved to the bottom of the slot 11, whereby the locking body 13 thanks to the spring 14 automatically returns to reading mode. In this state, the guide pins have 9 released from the arcuate portion 3, implying that the carrier hook 4 is free to pivot out of the shaft the part, although now around the coupling means 7. This in in turn means that the loop 21 can pass between the carrier hook 4 and the arcuate portion 3 of the shaft part during the pulling the rope 5 as illustrated in Figs. 5 and 6.

I praktiken kan hela genomdragningsoperationen, sådan den ovan beskrivits, genomföras mycket snabbt och med stor tillförlitlighet så tíllvida att med- bringarkroken 4 under operationen städse fasthálls vid och medföljer skaftdelen i det att densamma icke släpper den första förbindelsepunkt som konstitueras av bàgpartiet 3 jämte styrningen 9,9',9" innan den såsom andra förbindelsepunkt tjänande kopplingstappen 7 gått i ingrepp med slitsen ll.In practice, the whole pull-through operation, as described above, is implemented very quickly and with great reliability so far as to the bringer hook 4 is constantly held during the operation at and comes with the shaft part in that it does not releases the first connection point that is constituted of the bow portion 3 together with the guide 9,9 ', 9 "before it as the other connecting point serving the coupling pin 7 engaged with the slot ll.

Claims

10 15 20 25 30 35 453 176 (, PATENT REQUIREMENTS

A device for pulling a rope through a loop or the like, comprising a shaft part (1) and a carrier (4) connectable thereto at two separate connection points to which the rope (5) is attachable and which has the shape of a hook (4 ) arranged to be held in place in a standby position projecting from the shaft part (1) by means of a locking mechanism (16) which is releasable by the action of a pressure from the loop (21), the carrier hook (4) in said standby position is connected to the shaft part only via a first connecting point (3; 9,9 ', 9 "), and in the area of the free end of the hook, remote from the first connecting point, a coupling member (7) serving as a second connecting point is arranged to cooperate with a holder (l1) on the shaft part (l), and the free end of the hook in said ready position is insertable through pulling in the shaft part through or past the loop (2l) in order to cause it to press against the locking mechanism (l6) during release of the carrier hook (4) so that this k moving relative to the shaft part (1) to a position in which on one side the coupling member (7) engages in the holder (11) and on the other hand the connection between the hook (4) and the shaft part (1) in said first connection point (3). ; 9,9 ', 9 ") ceases, whereby the carrier hook (4) can pass through the loop despite the fact that it is still held at and during the pull-through process and accompanies the shaft part (1), characterized in that the connection in said first point consists partly of a guide (9,9 ', 9 ") included in the carrier hook (4), and partly of an arcuate portion (3) of the shaft part (1) which can be inserted therein, which portion due to its arcuate shape when displaced of the hook (4) in the longitudinal direction of the shaft part at the same time forces it to pivot with its coupling member (7) in the direction of the holder (ll).

Device according to claim 1, characterized in that the carrier hook (4) is made of two mutually spaced, suitably parallel plates (6,6 ') which are held together by a number of spacers (7,8,9, 10) of mr 10 15 20 7 453 176 which one (7) forms said coupling means and of which others (9) form said guide.

Device according to Claim 3, characterized in that the holder for the coupling member (7) consists of a substantially L-shaped slot (11) recessed in the shaft part (1) which delimits one in the direction from the hook pointing nose (12) arranged to serve as a stop for the coupling member (7) when this, suitably after removal of a spring-loaded locking body (13), reaches into the slot.

Device according to claim 3 or 4, characterized in that the locking mechanism consists of a finger (16) pivotably suspended between said plates (6, 6 ') which is actuated by a spring (17) which always strives to swing the finger to a position in which the same makes it impossible to displace said arcuate portion (3) relative to the guide (9,9 ', 9 ").

Device according to one of the preceding claims, characterized in that the part (3) of the shaft part (1) which can be inserted into the guide (9, 9, 9, 9) of the hook (4) has a boat hook-like shape and that the hook (4) is designed as a releasable attachment to a shaft part (1) in the form of a boat hook.