WO2021150098A1

WO2021150098A1 - Grocery trolley that can convert into a hand truck

Info

Publication number: WO2021150098A1
Application number: PCT/MX2020/000034
Authority: WO
Inventors: Brian Alejandro FRANCO CEJA
Original assignee: Franco Ceja Brian Alejandro
Priority date: 2020-01-24
Filing date: 2020-10-20
Publication date: 2021-07-29

Abstract

Disclosed is a grocery trolley that can convert into a hand truck, which comprises: a tubular structure formed by a vertical section (1), a bottom perpendicular section (2) and a transverse shaft (3) at the connection point of the two sections (1 and 2); a vertical back (4) attached by the transverse shaft (3) to the vertical section (1); a base (5) attached to and covering the entire area delimited by the transverse shaft (3) and the perpendicular section (2); a detachable laminar element (9) suitable for forming, together with the back (4) and the base (5), a basket (8) for transporting items or objects (12); and at least one rolling element (6) strategically attached to the bottom part of the perpendicular section (2).

Description

COMMAND TROLLEY CONVERTIBLE INTO "LOAD DIABLITO"

TECHNICAL FIELD OF THE INVENTION

The present invention is related to the technical field of Mechanics, since it provides a useful trolley for running errands, the advantage of which is that it is convertible into a "cargo truck" to transport heavier loads.

BACKGROUND OF THE INVENTION

Currently there are a number of carts to go to the errand, of which are pulled manually, where these carts have limited utility because their containers or baskets are generally fixed to the structure of the cart and those with removable baskets Since the simple structure of the cart remains, it is practically useless due to its fragile and flexible configuration.

Patent document WO1992014638 (Al) discloses a folding shopping cart consisting of a main body 1 that has holes 6 on each side in its lower part where projections with holes 10 of a base 9 arranged at an angle are inserted. straight with the main body 1, since the two ends of the base 9 are in contact with the lower horizontal part of the main body 1. The base 9 stops and is locked at right angles to the main body 1 by the joint two main parts, a male part 31 and a female part 35, left and right. The male part 31 has a rectangular reception 33 in which a rectangular projection 13 of the base 9 fits firmly, thus achieving a simultaneous rotation of the base 9 and the male part 31. The male part 31 has a hole 32 in its center that coincides with the hole of the projection 10 of the base 9, and has teeth 34 around the hole 32 that interlock with the cavities of some teeth 37 of the female part 35 that are around a hole 36 of said female part 35. Through a hole 7 of the main body and holes 32 and 36 the male part 31 and the female part 35, respectively, passes a shaft 24 which has six notches 25 in the appropriate locations that receive safety clips 28. Between the safety clips 28 it keeps compressed a compression spring 29 to hold the male 31 and female 35 parts together, thus achieving a satisfactorily stable support of the base 9, avoiding accidental closure due to load. A washer 27 is placed between the compression spring 29 and the safety clip 28 to prevent the shaft 24 from shifting sideways. At each end of the axle 24 is placed a wheel 26 partially surrounded by a fender 8 of the main body 1. This wheel 26 is secured in place by the safety clip 28, which engages the notch 25 in the end of the axle 24. The Washer 27 is positioned between safety clips 28 and wheel 26 to prevent safety clips 28 from coming out of notches 25 while wheel 26 is in motion. The main body 1 has in its upper internal part, on each side of a handle 2, some ribs with receptacles 3 where the straight ends of a frame 14 fit to be supported and rotated on the main body 1. When pulling a handle 19, the sides of the frame 14 are opened by creating friction with the internal sides of the main body 1. For this reason, a plug 16 is fixed constantly at each end of the frame 14 whose lateral movement is stopped by the receptacle rib 3 of the main body 1. The frame 14 supports the upper part of the a flexible synthetic net 30 whose lower side is fixed on the base 9 by a wire 38 whose shape coincides with the perimeter shape of the base 9, and which clicks into sockets 11 of the base 9.

The two vertical sides of the network 30 are supported by a cable 39 that clicks into the holes 7 that exist in the internal vertical sides of the main body 1. The main body 1 has in its upper and inner part some sockets 4 where they enter and The legs of the metal handle 19 slide, into which special plugs 22 are inserted with a safety spigot 23 or other means to secure them in place. The handle 19 has on its upper part a plastic or elastic cover 21. When the handle 19 is lowered, its upper part coincides with the shape of the handle 2 and, therefore, does not block its opening. The handle 19, the frame 14 and the base 9, although not connected to each other, are assembled and configured in such a way that a simultaneous and interrelated deployment is achieved when the handle 19 is pulled up, preparing the trolley for loading.

When the carriage is closed, the handle 19 is fully inserted into the main body 1 and the curves 20 of the handle 19 allow enough space for the frame 14 to be positioned vertically closed within the main body (1). In this condition, the packing rings 17 that are fixed on the angle leg 15 of the frame 14, are located above the curves 20 of the handle 19. The base 9 is closed vertically with the teeth 34 of the male part 31 disjoined of the cavities of the teeth 37 of the female part 35. By pulling the handle 19 upwards, the curves 20 press the packing rings 17 and, in Consequently, the angles 15 that work as levers force the frame 14 to rise immediately and at the same time open the base 9. As the handle 19 reaches the highest position, the special plugs 22 at its ends prevent it from coming out. of its sockets 4 of the main body 1 and, at the same time, interlock with the teeth 5 of the main body 1. The handle 19 when in its highest position supports the frame 14 at right angles to the main body 1.

The vertical legs of the handle 19 are not exactly parallel to each other, but the distance between their ends is slightly greater to achieve immediate interlocking of the special plugs 22 with the teeth 5 of the main body 1, because in this case, the legs handle 19 works like a spring. The plugs 4 of the main body 1 have tolerances to allow the legs of the handle 19 to move enough so that the special plugs 22 are locked or unlocked from the teeth 5 of the main body 1. To fold the trolley, the user presses the legs of the handle 19 simultaneously inwards and downwards, so that the special plugs 22 are unlocked from the teeth 5 of the main body 1; then lower the handle 19 until it stops, and its curves 20 allow enough space for the angles 15 of the frame 14 to fall, and finally the base 9 is closed. The packing rings 17 must be made of plastic or elastic material to reduce the friction between the handle 19, which can be made of aluminum, and the metal frame (14). The teeth 5 of the main body 1 may be inclined at 45 ° instead of a right angle. In this case, the locking of the special plugs 22 of the handle 19 is less strong, and the handle 19 can be lowered with a simple downward push. Instead of network 30, you can use a flexible synthetic textile, such as fabric 18. To avoid damage, bolts 12 can be added under the base 9, preferably metal bolts.

As can be seen, the folding shopping cart of document WO1992014638 (Al), has a basket made of a net 30 or fabric 18, which is not removable from the support structure; because the frames 14 and 1 that support the net (30) or fabric (18) are fixed; Furthermore, the area of the base 9 is delimited by the wheels, which means that in the cart of said document WO1992014638 (Al), only things or objects that have a place in the space included in the base and the net basket can be transported. or fabric; therefore, larger objects cannot be transported, in other words it cannot be used as a cargo "devil". It should also be noted that the folding cart of document WO1992014638 (Al) has a very complicated construction, requiring several components; and the problem that is solved with said shopping cart is that it is foldable to be able to compact it and be transported and stored easily.

Patent document W02013073500 (A) also describes a folding transport trolley, which is formed, separately, by a support and drive frame 11 and a base 13. The support and drive frame 11 is made up of telescopic bars 25, 27, 28 and 29, to make it extensible and / or retractable, and has a handle 30 at the upper ends of the bars 29 to hold and pull it. For its part, the base 13 is also configured by a vertical quadrangular frame and a horizontal quadrangular frame, which are foldable among themselves; the vertical frame is made up of vertical bars 17 and some crossbars 18 having forks 26 where the bars 25 of the support frame 11 are inserted and fixed; and the wheels 21 are fastened at the lower end of the bars 17 of the vertical frame. Said trolley can be used as a transport trolley by directly mounting a storage box or other item on it while the conveyor frame (11) is unfolded. Although it is true that this folding cart has a base 13 that would allow it to transport heavy objects larger than said base, but it would be difficult to achieve it, because the support and drag frame 11 has a very fragile configuration because it is fragmented into bars. telescopic 25, 27, 28 and 29.

It is for this reason that, to counteract the aforementioned drawbacks, a versatile or convertible shopping trolley was developed into a "loading dolly", whose characteristics and technical advantages are illustrated in some of its embodiments in the following description, examples and figures that are accompany, in an enunciative and non-limiting way, in which:

Figure 1 is an exploded view of the components that make up the tubular structure of the shopping cart that is convertible into a "loading dolly", according to the present invention.

Figure 2 is a conventional perspective view of the tubular structure of the "loading trolley" convertible shopping cart, according to the present invention, in an assembled condition.

Figure 3 is an exploded perspective view of the trolley convertible into a "loading devil" of the present invention, where a laminar element is observed to form a basket. Figure 4 is a conventional perspective view of the shopping cart convertible into a "loading dolly", in its assembled condition.

Figure 5 is a rear perspective view of the trolley convertible into a "loading dolly" of the previous figure.

Figure 6 is a conventional perspective view of the shopping cart in question, with things and objects inside the basket.

Figure 7 is a conventional perspective view of the shopping cart, where its use as a "loading dolly" is illustrated.

DETAILED DESCRIPTION OF THE INVENTION

The present invention refers to a manually operated shopping cart, with the advantage of being used as a "loading dolly", due to the fact that it has a removable basket; in such a way when it has the basket, it is a cart to go to the grocery store and when said basket is removed it can be used as a "loading devil" to transport things or objects with dimensions greater than the dimensions of the base of the cart in question.

According to the aforementioned figures, the shopping cart, which can be converted into a "loading dolly", according to the present invention, is made up of a tubular structure that has: a vertical section (1), a lower perpendicular section (2 ), and a transverse axis (3) at the point where the vertical (1) and perpendicular (2) sections converge. It is preferred that the structure is tubular in order to be light, so it can be made of light materials, but resistant to weight, to the conditions environmental, etc. as it will be put to rough use. For example, it can be made of light metals, such as aluminum, plastics, fiberglass, to name a few examples.

A vertical backrest (4) is fixed from the transverse axis (3) to close the area delimited by the vertical section (1), but without completely covering said area, to allow a user to hold to pull or push the cart at the top of the vertical section (1); and a base (5) is fixed and covers the entire area delimited by the transverse axis (3) and the perpendicular section (2). The main purpose of the backrest (4) and the base (5) is that they will be part of the basket of the errand cart in question.

The cart of the present invention comprises a removable laminar element (9) capable of forming, together with the back (4) and the base (5), a basket or container (8) where things or objects are contained and transported (12) , see figure 6; where said laminar element (9) has fastening means (10) distributed on its perimeter edge that allow it to be strongly attached to the tubular structure, but at the same time to be easily removed from said tubular structure.

Both the backing (4), the base (5), and the laminar element (9), can be selected from the following group: sheets, plates, meshes, bars, strips, fabrics, membranes, canvases, etc .; and be made of materials resistant to weight, environmental conditions, etc. and suitable to be adhered to the tubular structure; such materials can be plastics, polymers, woods, natural and / or synthetic fibers, and / or combinations of these materials, to name a few examples. It should be mentioned that the laminar element (9) can be substantially rectangular, so it can be a band, girdle, tape, fringe, edging, strap, strip, etc., so that it can adapt to the tubular structure of the cart and together with the backrest (4) and the base (5), make up the basket or container (8). It is also preferred that said element (9) is flexible to facilitate its placement and removal from the tubular structure, and to be rolled and / or folded when it is desired to be stored.

The fastening means (10) of the laminar element (9), can be any means or element that allows the laminar element (9) to be firmly attached to the tubular structure of the cart and that supports the weight of things and objects (12) that They will be transported in the basket (8), for example they can be: clasps, buttons, hooks, shackles, protrusions, gutters, points, rails, clamps, ropes, slats, slits, parts of the closure system, parts of a sailboat, and their combination between them, to name a few examples.

Therefore, it is obvious that the tubular structure of the cart in question can optionally comprise receiving means (11) to receive or couple to the holding means (10), where said receiving means (11) are made and located in the tubular structure, so that they perfectly coincide with the fastening means (10) that are distributed on the perimeter edge of the laminar element (9). Some examples of the receiving means (11) can be: perforations, holes, slits, cavities, gutters, stops, rails, the parts of a closure system, the parts of a sailboat, and their combination among them, among other examples. Said shopping trolley, in question, also comprises, at least, one rolling element (6) which is strategically fixed in the lower part of the perpendicular section (2), and allows the trolley to slide when it is pushed or pulled. Therefore, it also comprises clamping elements (13) to join the rolling element (6) in the lower part of the perpendicular section (2), where said clamping means (13) must allow the rolling element ( 6) rotate in all directions. The rolling element can be: rims, wheels, tires, rollers, spheres, vouchers, rings, rings, etc.

Placing the bearing means (6) totally below the perpendicular section (2) of the tubular structure gives the advantage of leaving the upper surface of the base (5) of the trolley totally exposed and free, for when it is remove the element (9), things or objects (15) with dimensions greater than the dimensions of the base (5) of the cart can be placed and transported perfectly.

One embodiment of the trolley according to the present invention is that it can optionally comprise, at least, one support (7) strategically placed in the lower part of the perpendicular section (2) useful for vertical stability to the trolley for orders when is at rest; Therefore, said support (7) must have the same height as the rolling elements (6). This support (7) is preferred or required when the shopping cart only has one or two bearing elements (6) and they need the support (7) to give it stability in a rest position (as seen in figures 6 and 7). Therefore, in this mode, means (14) must be provided to hold the support (7) at the bottom of the perpendicular section (2), where said means (14) allow the support (7) to be fixed. and / or folding.

A further embodiment of the cart proposed by the present invention is that it can optionally comprise a cover (not illustrated) to close the upper part of the basket.

(8). The cover can be made of the same material from which the backing (4), base (5) or the laminar element is made.

(9), or of a different material. Said cover can be an extension of the backrest (4), and / or of the laminar element (9) or be a totally independent piece. Therefore, the lid must also comprise fastening means so that it is fastened to the upper edge of the basket (8).

With all of the above, we obtain a useful trolley to carry out errands, where one of its advantages is that the laminar element (9) can be removed to use it as a "little devil for loads", operated manually, where things or objects can be transported (15) that have volumes greater than the area of the base (5) and basket (8) of said cart (see figure 7); An advantage that no shopping cart of those already known in the current state of the art has.

Claims

1. An order trolley, convertible into a "loading dolly", characterized in that it comprises: i) a tubular structure made up of a vertical section (1) and a lower perpendicular section (2); ii) a transverse axis (3) that is provided at the point where the vertical (1) and perpendicular (2) sections converge; iii) a vertical backrest (4) is fixed from the transverse axis (3) to close the area delimited by the vertical section (1), but without completely covering said area; iv) a base (5) is fixed and covers the entire area delimited by the transverse axis (3) and the perpendicular section (2); v) a removable laminar element (9) capable of forming, together with the back (4) and the base (5), a basket (8) for transporting things or objects (12); wherein said laminar element has fastening means (10) distributed on its perimeter edge that allow it to be strongly attached to the tubular structure, but at the same time to be easily removed from the tubular structure; vi) at least one rolling element (6) is strategically fixed in the lower part of the perpendicular section (2), useful to give the cart sliding when it is pushed or pulled; and vii) clamping elements (13) to join the rolling element (6) at the bottom of the perpendicular section (2), where said means clamping elements allow the rolling element (6) to rotate in all directions.

2. The cart of the preceding claim, where the back (4), base (5), and laminar element (9) are selected from the following group: sheets, plates, meshes, bars, strips, fabrics, membranes, and canvases ; made of metallic materials, plastics, polymers, woods, natural and / or synthetic fibers, and / or a combination of these materials.

The cart according to claim 1, wherein the laminar element (9) is rectangular in the shape of a band, girdle, tape, strip, edging, strap, or strip.

The cart according to the preceding claims, wherein the element (9) is flexible in such a way that the shaping of the basket (8) is easy, and when it is removed from the cart, it can be rolled up and / or folded when it is want to save.

The cart according to claim 1, wherein the fastening means (10) are selected from the following group: snaps, buttons, hooks, shackles, protrusions, gutters, points, rails, clamps, ropes, slats, slits, parts closure system, parts of a sailboat, and their combination between them.

6. The cart as claimed in claim 1, wherein the rolling element (6) is selected from the following group: rims, wheels, tires, rollers, spheres, vouchers, rings, and / or rings.

7. The cart according to claim 1, characterized in that it also comprises receiving means (11) of the fastening means (10), where said receiving means (11) are made and located in the tubular structure, so that they coincide perfectly with the fastening means (10) distributed on the perimeter edge of the laminar element (9).

8. The cart of the preceding claim, where the receiving means (11) are those that perfectly fit with the fastening means (10), such as perforations, holes, slits, cavities, gutters, stops, rails, the parts of a closing system, the parts of a sailboat, and their combination between them.

The cart according to claim 1, characterized in that it further comprises at least one support (7) strategically placed in the lower part of the perpendicular section (2) useful to give stability to the shopping cart, when it is in a static position; Therefore, said support (7) must have the same height as the rolling elements (6).

The cart of the preceding claim, characterized in that it also comprises means (14) to hold the support (7) at the bottom of the horizontal section (2), where said means (14) allow the support (7) be fixed and / or foldable.

11. The cart according to claim 1, characterized in that it also comprises a cover to close the part upper basket (8); wherein said lid comprises fastening means so that it is fastened to the upper edge of the basket (8).

12. The cart of the preceding claim, where the cover is an extension of the backrest (4), and / or of the laminar element (9) or is a totally independent piece.

The cart according to claim 11, wherein the cover is made of the same material as the back (4), base (5) or the laminar element (9), or of a different material.