WO1979000188A1

WO1979000188A1 - Rolling apparatus for transport

Info

Publication number: WO1979000188A1
Application number: PCT/CH1978/000024
Authority: WO
Inventors: L Ringdal
Original assignee: Kupag Kunststoff Patent Verwal; L Ringdal
Priority date: 1977-10-06
Filing date: 1978-10-03
Publication date: 1979-04-19
Also published as: EP0006923A1; DE2811498A1

Abstract

A rolling transport apparatus (10), particularly for suitcases and similar luggage comprises a pair of parallel wheels (18, 19), a loading surface (123, 143), a driving bar and rolling or sliding surfaces for passing over steps or staircases. The folding apparatus is formed by two support armatures (12, 14) and a U-shaped tubular metal handle (17) built in such a manner that the arms (171, 172) of the handle are introduced through openings (125, 145, 128, 148) corresponding to the support armatures up to the butting of the corresponding attaching parts (146) which can be locked if necessary. Each of the armatures (12, 14) preferably made of synthetic material bears in a housing the corresponding wheel (18, 19) and in a second housing the rolling or sliding surface.

Description

Technical field of the invention

The invention relates to a roller transport device that is used to transport loads such. B. suitcases, is suitable and a bracket with two arranged at the lower end of the bracket carrier boxes, each of which has a wheel guided in the box and an upper part for supporting loads.

State of the art

Roll transport devices of this type are e.g. B. from US-PS 3,061,323 ind DE-GM 7 604 276 known, but have the disadvantage that the wheel arches rigidly attached to the bracket

are so that the device can neither be folded nor easily dismantled. This is a hindrance for empty transport and storage. Furthermore, it is difficult to overcome stairs or steps with these known devices when loaded.

Collapsible roller transport devices are known per se from DE-OS 2'313'573 and the analogous AT-PS 329'975, GB-PS 1'406'272 and CH-PS 545'216, but are in no way suitable for transporting lumpy loads , such as suitcases, but only have a kind of shopping bag. Because these are only intended for the transportation of comparatively light goods, such as shopping goods, they do not require any special devices for climbing stairs or stairs, because they can be easily lifted for this purpose.

From US Pat. No. 3,043,603, a comparatively complicated roller transport device is also known, the wheels of which can be folded in and which has separately foldable ^" carrying elements for loads, for example strollers. For the easy transport of suitcases and similar loads over steps or stairs, this device is not suitable.

The problem of transporting suitcases and similar loads with rolling devices over stairs or steps is known per se. B. in US-PS 3,061,323 and 4,046,391, FR-PS 1,125,737 and DE-GM 1,965,573. But all these devices have the disadvantage that they cannot be folded up or dismantled in a simple manner. Finally, the prior art includes US Pat. Nos. 2,214,311, 2,715,533, 3,861 * 695 and DE-GM 7,713,348. In summary, the state of the art can be said that despite a large number of proposals, the problem of a device which is particularly suitable for the transport of suitcases and similar loads and which can be easily folded up or taken apart, is an effective way of overcoming stairs or similar obstacles, has a simple, robust construction which effectively enables wheel guidance and cannot be solved inexpensively using modern production methods and modern materials, in particular plastics.

The object of the invention is to provide an improved roll transport device of the type just mentioned which allows the problems just described to be solved.

Invention According to the invention, this object is achieved by a roll transport device with a bracket and two carrier boxes arranged at the lower end of the bracket, each of which has a wheel guided in the box and an upper part for supporting loads on the roll transport device, which device thereby is characterized in that each carrier box has bracket guides, into each of which one of the arms of an approximately U-shaped bracket connecting the two carrier boxes to one another is inserted, and each carrier box for folding the roller transport device around the associated one Arm of the

Bracket is pivotable; that each carrier box consists of two interconnected box parts, each of which the lower box part guides the associated wheel and the upper box part has a rolling or sliding surface to overcome step-like unevenness; and that each lower box part has a stop for the

OMPI Av-y. ^WJ PO, * Has bracket for torsionally rigid connection of the same with the lower box parts and for parallel guidance of the wheels in the unfolded state.

BRIEF DESCRIPTION OF THE DRAWINGS Preferred exemplary embodiments of the invention are explained with reference to the accompanying drawings. It shows:

Fig. 1 is a perspective view of a two-wheeled roller transport device, Fig. 2 is a schematic representation of the function of the

Rolling or sliding surface of the device of Fig. 1,

3 shows the top view of the rear of one of the carrier boxes from FIG. 1,

^■ Fig. 4, the enlarged side view of a Trägerka- least of Fig. 1,

5 shows a first modification of the rolling surface of the carrier box from FIG. 1,

6 shows a second modification of the rolling surface of the carrier box from FIG. 1, which is designed as a sliding surface, and

Fig. 7 is a partial front view of a modified device in the folded state.

Best embodiment of the invention

The roll transport device 10 shown in FIG. 1 consists of two carrier boxes 12, 14 and a bracket 17 connecting them, the upper end of which is shown broken off in FIG. 1. Each carrier box 12, 14 is a one-piece, preferably made of plastic, e.g. B. by press molding,

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, Λι Injection molding or the like. Both carrier boxes are preferably mirror images of the same and you can a first carrier box, z. B. the box 12, as the "left" box and the second box 14 as the "right" carrier box.

Each of the carrier boxes 12, 14 has a first or lower box part 121, 141 for receiving and supporting the associated wheel 18, 19 on both sides, which can consist entirely or partially of plastic material and, if appropriate, a tread (not shown) or a tire rubber-like material.

The top or top wall 123, 143 of each lower box part 121, 141 serves as a support surface for a piece of luggage. In order to increase the length of this support surface, one or both lower box parts 121, 141 can be provided with fold-out arms 124, 144, which on the outer sides of the lower box parts 121, 141 as indicated in the one box part 121 in the outer wall of the box part a linkage 127 can be pivoted.

Furthermore, each carrier box 12, 14 has an upper box part 122, 142 which carries a rolling or sliding surface 120, 140 for overcoming step-like unevenness. In Fig. 1, the rolling surfaces 120, 140 are formed by a series of rollers 129, 149 which are rotatably mounted in the two side walls or upper box parts 122, 142. As explained in more detail below, the surface 120, 140 can also be formed by an endless belt, which runs around at least two end-side rollers or axes, or by a fixed sliding surface. The two carrier boxes 12, 14 are connected by the bracket 17, which is generally U-shaped and the arms 171, 172 of which are in the form of openings in the lower and upper box parts 121, 141; 122, 142 formed bracket guides 125, 145; 128, 148 can be inserted. Each box 12, 14 (in Fig.

1 can only be recognized by the box 14) is provided with a stop 146 on the corresponding lower box part in order to connect the bracket 17 to the respective box or box part in a torsionally rigid manner in the load-bearing operating state ^• and to guide the wheels in the boxes parallel even when loaded . To fold the box 10, the bracket can be pushed out of the box somewhat downwards and the torsionally rigid connection can thereby be released.

The arms 171, 172 of the bracket 17 can (in a manner not shown) be connected to one another by an additional connecting arm or bracket to form a partially or completely circumferential bracket frame. The arms 171, 172 of a collapsible roller transport device 10 preferably protrude freely and, as in FIG.

2 shown formed from telescopically insertable parts 271, 272, 273. It goes without saying that the number of parts which can be telescopically pushed into one another is not critical.

FIG. 2 also shows the effect of the rolling surface 120 on the roll transport device 10 loaded with a piece of luggage 20 when negotiating steps 25. The function shown shows that the rolling or sliding surface 120, 140 has a length should have, which is greater than the height ^'of the steps, stairs, rungs or the like normally to be overcome with the roller transport device 10 and z. B. is 25 to 40 cm. In general, the roller transport device 10 is designed as a light transport device for suitcases, that is to say made of lightweight materials and collapsible, which in this way can be used by physically weak people without difficulty through difficult steps, for example when getting on and off or from railway carriages.

For the repeated folding or the repeated assembly of the roller transport device 10 in a simple manner

10 to enable the bracket guides 125, 128; 145, 148 for smoothly pushing in or pulling out the bracket 17 - preferably with the arm elements 271, 272, 273 pushed into one another - and provided with a simple locking known per se, which, as in FIG

15. indicated schematically at 126 in the lower box part and / or in the bracket guide 128, 148 of the upper box part or / and in the stop piece 146 can be arranged.

If desired, the bracket arms can also be connected 20 with a removable crossbar, not shown, which, for. B. has two end openings or inserts and can be pushed or attached to the arms 171, 172 with these.

In order to enable a two-wheeled roller transport device 10 with a load thereon to be securely parked, the projecting end of each lower box part 121, 141 is provided with a foot 13, 15.

FIG. 3 shows the top view of the carrier box 14 according to FIG. 1 from the rear side in the direction of travel. Both box parts 141, 142 are to the rear open, ie they can have an approximately U-shaped horizontal cross section, but this is not critical per se for the lower box part 141, since the end wall 17 shown in FIG. 1 can be omitted in whole or in part if the stability thereof Box part not significantly affected.

The wheel 19, which, like the wheel 18, can also be designed as a larger roller, is rotatable about the pin 35 held in the two side walls 30, 31. The wheel bearing can be designed as a sliding or rolling bearing. The rollers 149 mounted in the upper box part 142 in its side walls 32, 33 form the rolling surface and can all be offset from one another like the rollers 36, 38. Simple or light plastic rollers are preferred for the rolling surface.

The stirrup 17 or the stirrup arm 172 shown broken off at the end lies in the representation of FIG. 3 under the rollers 149. The stop piece 37 corresponds in its function to the stop 146 of FIG. 1.

As can be seen from FIG. 3, the outer side wall 33 of the upper box part 142 can merge downward into the inner side wall 31 of the carrier box 14.

FIG. 4 shows the side view of the carrier box 14 as seen from the outside of the roller transport device 10 shown in FIG. 1, with the bracket 17 inserted, the arm 172 of which is held at its lower end in the bracket guide 145, which is held by the holding sleeve 45 is formed in the lower box part 141 - preferably in a one-piece design with the latter. The bracket arm 172 is also inserted into the bracket guide 128, which as Bracket sleeve 42 - preferably also in one piece with the upper box part 142 - is formed. The overlapping arrangement of the rollers 149, like the wall profile of the box parts, is drawn in broken lines.

5 and 6 show variations for the formation of the rolling or sliding surfaces 120, 140 of the device 10 from FIG. 1.

As indicated above, the rollers 149 according to FIG. 5 can be replaced by an endless belt 55 which runs around the belt guide rollers 53, 54 provided at the end and optionally one or more support rollers 56 and laterally from the side walls of the upper box part 52 to be led.

Instead of a rolling surface formed by rollers 149 or belts 55, a sliding surface 65 can also be provided on the upper box part 62 for simpler designs of the device 10, which sliding surface expediently consists of self-lubricating or such material that is good on the usual steps or stairs slides.

The roll transport device shown in FIG. 1 is constructed in the manner of a two-wheeled wheelbarrow, but the roll transport device according to the invention can advantageously also be used with other transport devices which have several pairs of wheels and a handle or handle bar. In this case, e.g. B. in a stroller, the pair of wheels adjacent to the handle or bracket is arranged in carrier boxes with the structure according to the invention, and the handle or bracket is preferably connected directly to the carrier boxes. bound. It goes without saying that in this case the side walls of the lower box parts serve only for wheel suspension and the wall part which is pulled down to form the foot is omitted.

The new construction principle of the invention

Roll transport devices enable the extensive or exclusive use of plastics of a thermoplastic or / and duroplastic type, including rigid foam plastics, for practically all parts of the device. Examples of examples are plastic compositions containing polystyrene, polyacrylic, polyvinyl, polyolefin and polyurethane resins based on homo- and / or copolymers or mixtures. Typical thermosets based on phenol formaldehyde, polyester, epoxy, phenol urea and the like are also suitable. The usual additives, fillers of an inorganic or organic type and dyes can be used in a known manner.

Metallic materials, in particular light metal pipes, are mostly preferred only for the bracket, but plastic materials, e.g. B. with Glasfaser¬ reinforcement can be used.

FIG. 7 shows the front view of a foldable rolling device 70 which is constructed similarly to that in FIG. 1, so that it can be stored in a space-saving manner or transported empty without being disassembled into brackets and boxes. To this end, it is only necessary to coordinate the parts 741a, 741b of the two carrier boxes projecting forward on the load side in the operational state and the length of the lower part 771 of the bracket 77 so that the carrier boxes with the respective guide part 79 the bracket 77 can be pivoted. For the fixation in the working position, in addition to the stop which cannot be seen in FIG. 7, the respective box 74, for example at the lower guide end 78, can be provided with snap-in points (not shown) which interact with corresponding positions of the bracket 77. The device can also fix this or an additional locking device in the folded state shown in FIG. 7. The extension arms 744 are pivoted downwards before being folded up. The folded device 70 can also be pulled over stairs with the help of the rolling surface 742 during the empty transport without the feet 75 disturbing. As in FIGS. 1, 3 and 4, the upper end of the bracket 77 is not shown, but can, as explained above, be designed telescopically or be provided with a reinforcing upper cross connection.

Technical applicability

The device according to the invention can be inexpensively manufactured technically in large series. There is a clearly recognizable need for such devices, since assistants are often not available at train stations or airfields, and in particular the elderly or physically disabled traveler cannot or should not carry medium-heavy loads. The known rolling devices are less advantageous and / or more expensive for the intended purpose.

Claims

Patent claims

1. Roll transport device with a bracket and two support boxes arranged at the lower end of the bracket, each of which has a wheel guided in the box and an upper part for supporting loads on the roll transport device, characterized in that each support box (12, 14) has bracket guides (125, 128; 145, 148), into each of which one of the arms (171, 172) of an approximately U-shaped bracket (17) connecting the two carrier boxes (12, 14) is inserted and each carrier box (12, 14) for folding the rolling transport device (10) around the associated arm (171, 172) of the bracket (17) is pivotable; that each carrier box (12, 14) consists of two interconnected box parts (121, 122; ^' 141, 142), each of which the lower box part (121, 141) guides the associated wheel (18, 19) and the upper box part (122, 142) has a rolling or sliding surface (120, 140) for overcoming step-like unevenness; and that each lower box part (121, 141) has a stop (146, 37) for the bracket (17) for torsionally rigid connection thereof to the lower box parts (121, 141) and for parallel guidance of the wheels (18, 19) in - folded state.

2. Roll transport device according to claim 1, characterized ge indicates that each carrier box (12, 14) is an integral structure made of thermosetting or thermoplastic plastic compound and the bracket (17) preferably formed from tube material, in particular light metal tube. Disassembling the roll transport device (10) is detachably connected to the carrier boxes (12, 14).

3. Roll transport device according to claim 1 or 2, characterized in that the arms (171, 172) of the bracket are each formed from telescopically displaceable parts (271, 272, 273).

4. Roll transport device according to one of the claims 1-3, characterized in that the rolling surface (140) is formed by rows of rollers, preferably from mutually offset rollers (36, 38).

5. Roll transport device according to one of the claims 1-3, characterized in that the rolling surface (140) is formed by an endless belt (55) which is held by at least two rollers (53, 54).

6. Roll transport device according to one of claims 1-3, characterized in that the sliding surface (65) is a preferably self-lubricating surface of the second box part (62).

7. Roll transport device according to one of claims 1-6, characterized in that each first box part

(121, 141) has a foot (13, 15) designed as a parking support.

8. Roll transport device according to one of the claims 1-7, characterized in that each box part (121, 122) of a carrier box (12) has an approximately U-shaped cross-sectional profile.

9. Roll transport device according to one of claims 1-8, characterized in that each lower box part (121, 141) has a fold-out extension piece (124, 144) of the support surface (123, 143).

10. Roll transport device according to one of the claims 1-9, characterized in that at least one Trägerka¬ box (12, 14) has a locking device (126) for fixing the bracket (17) or the associated bracket arm (171, 172).

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