DK161735B

DK161735B - PATIENT LIFT

Info

Publication number: DK161735B
Application number: DK155487A
Authority: DK
Inventors: David Richard James
Original assignee: Impro Ltd
Priority date: 1986-04-15
Filing date: 1987-03-26
Publication date: 1991-08-12
Also published as: GB8609100D0; DE3709184A1; SE8700881L; DK155487D0; NL189233C; IT1207386B; JPS62246363A; SE8700881D0; FR2596981B1; GB2189219A; FR2596981A1; DK155487A; AU6922887A; GB2189219B; CH671152A5; BE1001354A4; AU585130B2; DK161735C; NL8700899A; JPH0341182B2

Description

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Opfindelsen angår patientlifte af den art, der omfatter en løftearm, som gennemgår en vinkelløftebevægelse i forhold til en bæredel eller søjle, hvorfra armen rager ud.The invention relates to patient lifts of the kind comprising a lifting arm which undergoes an angular lifting movement with respect to a support part or column from which the arm protrudes.

Det drejer sig om lifte af denne art med midler til fast-5 gørelse af en patientbæreindretning fastgjort i yderenden af armen, således at den kan dreje omkring et fast lodret leje, dvs. et leje, hvis akse forbliver i det væsentlige lodret gennem hele vinkelbevægelsen, som armen gennemgår.These are lifts of this kind with means for securing a patient carrier fastened to the outer end of the arm so that it can rotate about a fixed vertical bed, ie. a bearing whose axis remains substantially vertical throughout the entire angular motion which the arm undergoes.

10 For at fastholde lejets lodrette stilling er det kendt at udforme armen som et parallelogram med to i lodret plan med mellemrum mellem hinanden anbragte led fastgjort på faste drejetappe i den inderste ende og drejeligt fastgjort til lejehuset i den yderste ende. Det er klart, at 15 mellemrummet mellem leddene ændres under armens vinkelbevægelse og for at bibeholde et mellemrum, således at der ikke er nogen fare for, at fingrene på patienten, der løftes, eller operatørens fingre kommer i klemme, er det nødvendigt at have et stort mellemrum, når armen befinder 20 sig i enten den øverste eller den nederste stilling. Dette medfører en besværlig og uhåndterlig konstruktion, hvor endedrejepunkterne er anbragt ved det mindste ledmellemrum, som foreskrives af sikkerhedskravene.In order to maintain the vertical position of the bearing, it is known to design the arm as a parallelogram with two vertically spaced joints fixed on fixed pivots at the inner end and pivotally attached to the bearing housing at the outer end. Obviously, the gap between the joints changes during the arm's angular motion and to maintain a gap so that there is no danger of the fingers of the patient being lifted or the fingers of the operator getting pinched, it is necessary to have a large gap when the arm is in either the upper or the lower position. This results in a cumbersome and unmanageable construction where the end pivot points are located at the smallest articulation space prescribed by the safety requirements.

25 Endvidere skal begge led have et stort tværsnitsprofil for at hindre hændelige skader set i forhold til den nødvendige mekaniske styrke i længderetningen, og dette bidrager yderligere til at give et massivt udseende og til liftens vægt.25 Furthermore, both joints must have a large cross-sectional profile to prevent accidental damage in relation to the required longitudinal mechanical strength, and this further contributes to a solid appearance and to the weight of the lift.

3030

Det er formålet med opfindelsen at anvise en lift med en sikker og kompakt armkonstruktion, som ser pæn ud, og som vejer mindre end tilsvarende hidtil kendte konstruktioner.SUMMARY OF THE INVENTION It is an object of the invention to provide a lift with a safe and compact arm structure which looks nice and weighs less than similar previously known structures.

3535

Ifølge opfindelsen har en patientlift en løftearm fast- 2According to the invention, a patient lift has a lifting arm 2

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gjort i dennes inderende på en bæredel eller søjle på liften og i yderenden fastgjort til huset af et lodret leje til understøtning af en patientbæreindretning, idet armen omfatter to led i et parallelogramledsystem, hvor 5 det ene led er anbragt i et rum inde i det andet led.made in its interior on a support portion or column of the elevator and at the outer end attached to the housing by a vertical bearing to support a patient carrier, the arm comprising two joints in a parallelogram joint system, one joint being arranged in a space within the other part.

Det ene led er fortrinsvis en stang med relativt lille profil og med cirkulært eller rektangulært tværsnit, der er forbundet mellem øvre drejetappe i ledsystemet, såle-10 des at det virker ved træk, og det andet led, som er under tryk, kan have et hult kasseprofil, således at det ene led er fuldstændig indesluttet i dette. Selv om dette er den foretrukne udførelsesform, kan det andet led alternativt omfatte i det vandrette plan med mellemrum mel-15 lem hinanden anbragte leddele adskilt af midterrummet, hvori det ene led er anbragt.Preferably, one link is a relatively small profile bar with circular or rectangular cross-section, which is connected between upper pivots of the linkage system so that it acts in tension and the other link which is pressurized may have a hollow box profile so that one joint is completely enclosed therein. Although this is the preferred embodiment, the second link may alternatively comprise, in the horizontal plane, spaced apart portions spaced apart by the central space in which one link is disposed.

Inder- og yderendédrejetappene i parallelogramledsystemet kan være anordnet på cirkulære fremspring, der henholds-20 vis er fastgjort på bæredelen eller søjlen og på det lodrette lejes hus. Det ene spændte led er da fortrinsvis anbragt i en øvre del af rummet inde i det andet led, idet dette andet leds endedrejetappe er anbragt midt i de cirkulære fremspring. Midterdrejetappen i inderenden kan 25 være tilvejebragt af en midterdel på et aftrappet håndtag, der rager vandret ud til siden, således at der dannes håndtag på hver side af bæredelen eller søjlen til brug for en operatør, der således kan skubbe og manøvrere liften, når denne omfatter et kørbart chassis.The inner and outer pivot pins of the parallelogram articulation system may be arranged on circular projections which are respectively secured to the support member or column and to the housing of the vertical bearing. The one tensioned joint is then preferably placed in an upper part of the space within the second joint, the end pivot end of this second joint being arranged in the middle of the circular projections. The center pivot pin on the inner end may be provided by a center portion of a stepped handle projecting horizontally to the side so as to form handles on each side of the support member or column for use by an operator, who can thus push and maneuver the lift when includes a drivable chassis.

3030

En løftemekanisme forbundet med bæredelen eller søjlen kan regulerbart understøtte armen gennem en forlængelig eller bevægelig stiver, der er forbundet med det andet led. Såfremt dette led har et hult kasseprofil, kan dets 35 bundvæg være skåret væk, således at der tilvejebringes frigang for stiveren, hvis øvre ende inde i leddet medA lifting mechanism associated with the support member or column can adjustably support the arm through an extendable or movable strut connected to the second link. If this joint has a hollow box profile, its bottom wall may be cut away to provide clearance for the strut, whose upper end inside the joint with

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3 kasseprofil er fastgjort med en drejetap, der strækker sig imellem sidevæggene i kasseprofilet. Alternativt kan den øvre drejetap på stiveren være tilvejebragt af et drejebeslag fastgjort uden på undersiden af det andet 5 led.3 box profile is secured with a pivot extending between the side walls of the box profile. Alternatively, the upper pivot pin on the strut may be provided by a pivot bracket attached to the underside of the second 5 joint.

Opfindelsen vil i det følgende blive nærmere beskrevet under henvisning til den medfølgende tegning, der ved et eksempel viser en kørbar patientlift omfattende opfindel-10 sen og en modifikation deraf, hvor:The invention will be described in more detail below with reference to the accompanying drawing, which shows by way of example an executable patient lift comprising the invention and a modification thereof, wherein:

Fig. 1 viser liften i helhed set i perspektiv, fig. 2 viser konstruktionen af en løftearm på liften set 15 delvis gennemskåret og i snit, og fig. 3 viser en detalje, der illustrerer modifikationen.FIG. 1 is a perspective view of the lift as a whole; FIG. 2 shows the construction of a lifting arm on the lift seen partially cut and cut, and fig. 3 shows a detail illustrating the modification.

Liften omfatter en opretstående og let bagudhældende søjle 20 1 fastgjort på et kørbart chassis 2. En løftearm 3, som un dergår en vinkelløftebevægelse i forhold til søjlen 1, rager ud fra denne og er regulerbart understøttet af en stiver 4. Den nedre ende af stiveren 4 er ved 5 fastgjort til en løftemekanisme, der befinder sig inde i søjlen 1, og som 25 omfatter en løber 6, der er bevægelig langs med søjlen, og som rager ud igennem en langsgående rille 7 i søjlen 1 til fastgørelse til stiveren 4. Bevægelse af løberen 6 langs med søjlen 1 og tilsvarende bevægelse af løftearmen 3 styres af et drejehåndtag 8 fastgjort i toppen af søjlen 1.The lift comprises an upright and slightly backward-facing column 20 1 attached to a movable chassis 2. A lifting arm 3, which undergoes an angular lifting movement relative to the column 1, protrudes therefrom and is adjustably supported by a strut 4. The lower end of the strut 4 is attached at 5 to a lifting mechanism located within the column 1, which comprises a runner 6 which is movable along the column and protrudes through a longitudinal groove 7 in the column 1 for attachment to the strut 4. Movement of the runner 6 along the column 1 and corresponding movement of the lifting arm 3 is controlled by a swivel handle 8 fixed at the top of the column 1.

3030

Armen 3 er af parallelogramtypen og omfatter to led 9 og 10, der er drejeligt fastgjort i inderenden til et cirkulært fremspring 11 svejst på søjlen 1 og drejeligt fastgjort i yderenden til et cirkulært fremspring 12. Frem-35 springet 12 er svejst på huset 13 af et lodret leje, der understøtter en patientbæreindretning 14, hvortil for-The arm 3 is of the parallelogram type and comprises two joints 9 and 10 which are pivotally secured at the inner end of a circular projection 11 welded to the column 1 and pivotally secured at the outer end to a circular projection 12. The projection 12 is welded to the housing 13 by a vertical bed supporting a patient carrier 14 for

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4 skellige slyngeløfteindretninger (ikke vist) kan fastgøres. På grund af løfteamens 3 parallelogramforra forbliver lejets akse A i det væsentlige lodret igennem hele armens 3 vinkelbevægelse, idet den nedre og den øvre 5 grænse for en sådan bevægelse er vist antydet ved 3a og 3b.4 different loop lifting devices (not shown) can be attached. Due to the parallelogram front of the lifting team 3, the axis A of the bearing remains substantially vertical throughout the angular movement of the entire arm 3, the lower and upper limits of such movement being indicated at 3a and 3b.

Det ene af armleddene 9 er en stålstang med relativ lille diameter, hvorimod det andet led 10 er en opbygning i 10 stålkonstruktion af i det væsentlige kasseformet tværsnit, og leddet 9 befinder sig inde i det øvre område af midterområdet tilvejebragt af leddets 10 rektangulære kasseprofil. Leddet 9 er således skjult inde i leddet 10, hvilket bidrager til et pænt og kompakt udseende, og er 15 beskyttet mod hændelige skader, således at det kun behøver at have det tværsnit, som er nødvendigt for at modstå arbejdstrækkræfter. Bundvæggen 10a på leddet 10 er ved 15 skåret væk, således at der skabes gennemgang for stiveren 4, som har et fremspring 16 i den øvre ende, og som dre-20 jer omkring en drejetap 17, der strækker sig mellem sidevæggene 10b på leddet 10.One of the arm joints 9 is a relatively small diameter steel bar, whereas the other joint 10 is a structure of 10 steel construction of substantially box-shaped cross section and the joint 9 is located within the upper region of the middle region provided by the rectangular box profile of the joint 10. The joint 9 is thus concealed inside the joint 10, which contributes to a neat and compact appearance, and is protected against accidental damage, so that it only has to have the cross-section necessary to withstand work forces. The bottom wall 10a of the link 10 is cut away at 15 to create passage for the strut 4, which has a projection 16 at the upper end and which rotates about a pivot 17 extending between the side walls 10b of the link 10 .

De cirkulære fremspring 11 og 12 er udskårede, således at de kan optage inder- og yderender 18 og 19 på leddet 9, 25 hvorigennem der strækker sig drejetappe 20 og 21 henholdsvis anbragt øverst i fremspringene 11 og 12, således at leddet 9 er svingbart fastgjort. Ledopbygningen 10 omfatter cirkulære skiver 22 i inderenden med samme diameter som fremspringet 11, og som er anbragt med siden mod 30 det fremspring, som befinder sig mellem dem. Cirkulære skiver 23 i yderenden af leddet 10 er på lignende måde forbundet med fremspringet 12, og de to endedrejetappe på leddet 10 er hver især anbragt midt i fremspringene 11 og 12.The circular projections 11 and 12 are cut so that they can receive inner and outer ends 18 and 19 on the joint 9, 25 through which pivots 20 and 21 extend respectively at the top of the projections 11 and 12, so that the joint 9 is pivotally secured. . The hinge assembly 10 comprises circular discs 22 in the inner end of the same diameter as the projection 11, which are arranged laterally against the projection located between them. Circular discs 23 at the outer end of the link 10 are similarly connected to the projection 12 and the two end pivots on the link 10 are each disposed in the middle of the projections 11 and 12.

3535

Drejetappen i inderenden på leddet 10 er forsynet med et 5The pivot pin in the inner end of the link 10 is provided with a 5

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håndtag 24, der omfatter en sidedel 25, som kan skrues fast på en håndtagsdel 26 på modsatte side, Idet sidstnævnte er aftrappet, således at der tilvejebringes en del 26a med reduceret diameter, som går koaksialt 5 igennem fremspringet 11 og skiverne 22, hvorved drejetap-pen i inderenden for leddet 10 tilvejebringes. Drejetap-pen i yderenden af dette led er forsynet med en drejebolt 27, der går koaksialt igennem fremspringet 12 og skiverne 23. Støbte plastichåndtag som for eksempel 28 er anbragt 10 over enderne af begge håndtagsdelene 25 og 26.handle 24 comprising a side portion 25 which can be screwed onto a handle portion 26 on the opposite side, the latter being stepped so as to provide a reduced diameter portion 26a extending coaxially 5 through the projection 11 and the washers 22, thereby pivoting pin in the inner end of link 10 is provided. The pivot pin at the outer end of this joint is provided with a pivot bolt 27 which passes coaxially through the projection 12 and the washers 23. Molded plastic handles such as, for example, 28 are placed 10 over the ends of both handle portions 25 and 26.

I udførelsesformen på Fig. 3 er det kasseformede led 10 som vist forkrøppet set fra siden. For at skabe plads til leddet 9 inde i leddet 10 er den øvre drejetap 17 for 15 stiveren 4 flyttet ud af leddet 10. Denne tap 17 er nu anbragt på et drejebeslag 29 svejst på bundvæggen 10a på leddet 10 under dette. Ved denne udførelsesform undgår man også enhver ulempe, der kunne være ved at skulle lave gennemskæringen 15 i bundvæggen 10a, og således kunne det 20 udvendige drejebeslag 29 om ønsket anvendes sammen med en lige arm 3 som vist i Fig. 1 og 2.In the embodiment of FIG. 3, the box-shaped link 10 is, as shown, curved from the side. In order to make space for the link 9 inside the link 10, the upper pivot pin 17 for the strut 4 is moved out of the link 10. This pin 17 is now arranged on a pivot bracket 29 welded to the bottom wall 10a of the link 10 below it. In this embodiment, any inconvenience that might arise from having to cut through 15 in the bottom wall 10a is also avoided, and thus the 20 external turning bracket 29 could, if desired, be used with a straight arm 3 as shown in FIG. 1 and 2.

På Fig. 3 er den øvre ende af en patientbæreindretning 30, som i dette tilfælde er en bæreslyngebøjle, vist un-25 derstøttet i det lodrette leje i yderenden af armen 10.In FIG. 3, the upper end of a patient carrier 30, which in this case is a carrier loop, is shown supported in the vertical bearing at the outer end of the arm 10.

Claims

A patient lift with a lifting arm attached to the inside of it on a support part or column of the lift, the arm at the outer end being secured to a vertical bearing housing for supporting a patient carrier and comprising two joints in a parallelogram joint system, characterized in that: one of the joints (9) of the parallelogram joint system is arranged in a space within the second joint (10) of the joint system. 10

A patient lift according to claim 1, characterized in that one joint (9) has a relatively small cross-section compared to the joint (10) and is connected between upper pivots (20, 21) of the joint system (9, 10), so that The joint (9) acts at a pull.

A patient lift according to claim 1 or claim 2, characterized in that the second link (10) has a hollow box profile, so that one link (9) is completely enclosed therein.

A patient lift according to Claim 1 or Claim 2, characterized in that the second joint (10) comprises two spaced-apart joint portions spaced apart horizontally, separated by the space, wherein the one joint (9) is placed.

A patient lift according to any one of the preceding claims, characterized in that the inner and outer pivot pins (20, 26; 21, 27) of the parallelogram joint are arranged on circular projections (11, 12) which are respectively fixed on the support or column (1) of the lift and on the bearing housing (13).

A patient lift according to claim 5, characterized in that the end pivot pins (26, 27) on the second link (10) DK 161735B are each arranged in the middle of the circular projections (11, 12).

A patient lift according to claim 6, characterized in that the inner pivot pin (26) on the second link (10), located in the middle of the circular projection (11), which is attached to the carrier or column (1), is provided by a central part (26a) on a stepped handle (24) projecting horizontally to the side so as to form handles on each side of the carrier or column (1).

A patient lift according to claim 3, wherein a lifting mechanism connected to the support part or column (1) adjustably supports the arm through an extendable or movable strut (4), which is pivotally attached at its upper end to the parallelogram joint system (9, 10). a bottom wall (10a) of the second link (10) being cut away to provide clearance for the strut (4), the upper end of the second link (10) being secured by a pivot pin (17) extending between the side walls (10b) of the second joint (10).

A patient lift according to claim 3, wherein a lifting mechanism, connected to the support member or column (1), adjustably supports the arm through an extendable or movable strut (4) pivotally attached at its upper end to the parallelogram joint system (9, 10), characterized in that the strut (4) is attached to the joint system (9, 10) by a swivel (29) attached to the second 30 joint (10) below it.