ES1270594U - Shopping cart (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Shopping cart, comprising a folding structure with a base that carries at least two wheels and a support (4) for a basket or bag topped with a handle (5), characterized in that: The base is made up of two pairs of arms (1, 2) finished in wheels, each first arm (1) fixed to the support (4) by a first joint (31) and to a second arm (2) by a second joint (32), the first joint (31) being arranged above the second joint (32); the support (4) is separated into: at least one lower section (6) attached to the first joint (31) and a second section (7) fixed to the lower section (6) by a lower joint (9) separated from the lower end of the second section (7), generating a free end (71); the sections (6,7) and the handle (5) being folded in Z; and why you understand at least one plate (10) close to the first arm (1) from which it comes out: a first bar (11) articulated to the plate (10) and attached to the first arm (1); a second bar (12), articulated to the plate (10) and attached to the second arm (2); and a third bar (13) fixed without rotation to the plate (10) and attached to the free end (71) of the second section (7); and at least one latch of the lower joint (9). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Shopping cart

TECHNICAL SECTOR

The present invention refers to a shopping cart of the type comprising a folding structure with at least two wheels and a cloth bag or a basket, generally flexible. That is, the type that is used to carry the purchase to the home address.

STATE OF THE ART

The use of shopping carts formed by a base with two or more wheels, a vertical or somewhat inclined folding structure, a handle and a flexible bag or basket is known in the state of the art. This type of cart is generally used to carry the purchase from the store to the home.

These cars have a different way of folding. For example, the base can be made up of two U-shaped parts that collapse onto the structure. However, it is not usually foldable (apart from the handle), so the dimension of the folded trolley is still defined by the length of the structure.

The applicant does not know of any carriage that can be considered similar to the invention, allowing simple folding and at an extremely reduced volume.

BRIEF EXPLANATION OF THE INVENTION

The invention consists of a shopping cart according to the claims. Its different embodiments solve the problems of the state of the art and provide notable advantages.

The shopping cart comprises a base made up of two pairs of arms topped with wheels. These arms are separated into two first arms and two second arms. Each first arm is attached to the support by a first hinge and to a second arm by a second hinge. The first joint is arranged above of the second joint in the deployed and in-use position of the trolley. The trolley supports a basket or a bag, which is where the products are introduced.

In turn, the support is separated into several sections, which are folded in Z next to the handle:

A lower section attached to each first joint

A second section, fixed to the lower section by a lower joint (with latch). This second joint is separated from the lower end of the second section, generating a free end.

The folding mechanism comprises at least one plate close to the first arm. Three bars come out of this plate:

A first bar articulated to the plate and attached to the first arm.

A second bar, articulated to the plate and attached to the second arm.

A third bar fixed without rotation to the plate and attached to the free end of the second section.

Due to its position, the third bar will move almost parallel to the lower section, causing the arms to rotate due to the misalignment of the joints.

Ideally two plates will be arranged, one parallel to each side of the support.

The plate or plates are preferably between the first two bars.

Other variants will show up in the rest of the memory.

DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention, the following figures are included.

Figure 1: Schematic side view of an embodiment of the carriage structure.

Figure 2: Detail of the union of the arms and the support in the previous example, appreciating the bars and the plate and representing the folding movement in the starting position.

Figure 3: Detail of the union of the arms and the support in the previous example, appreciating the bars and the plate and representing the folding movement in an intermediate position, marking the directions of movement (the first arm is represented static.

Figure 4: Detail of the union of the arms and the support in the previous example, appreciating the bars and the plate and representing the folding movement in final position.

MODES OF EMBODIMENT OF THE INVENTION

An embodiment of the invention will be briefly described below, as an illustrative and non-limiting example thereof.

Figure 1 shows an example of the structure of the trolley, without the basket, in which a base formed by two pairs of arms (1,2) finished in wheels and articulated to the respective joints (3) with two joints ( 31.32). From the joints (3) separate supports (4) of the basket or the bag (not shown), vertical or oblique, joined by a transverse U-shaped part, which forms the handle (5) of the trolley.

Each support (4) is divided into several sections (6,7) by secondary joints (8,9), so that it can be bent in "Z". That is, each section (6,7), including the handle (5 ), it folds in the opposite direction to the previous one.In turn, each lower section (6), fixed to the joint (3), folds onto one of the two arms (1,2), preferably longer than the other. In the figure, the longest length corresponds to that of the arms (1,2) arranged towards the rear of the carriage.

As can be seen in figure 2, each joint (3) is composed of a first joint (31) between the first arm (1) and the support (4), and a second joint (32) between the two arms (1, two). The first articulation (31) is made above the two arms (1,2), for which a projection (1 ') is arranged on the first arm (1). This projection (1 ') allows the lower section (6) to be approximately parallel to the first arm (1) in the folded position. It can be replaced by a suitable curvature of any of the elements. Thus, the two arms (1,2) are curved so that they can also be approximately parallel.

The union of each lower section (6) to the second section (7), immediately superior to this lower section (6), is carried out at a certain distance from the lower end of the second section (7), so that there remains a free end ( 71) that moves in accordance with the second section (7).

To actuate the folding and unfolding movement of the carriage, at least one plate (10) is arranged close to the joint (3) but somewhat offset towards the first arm (1). The plate (10) serves to fix a first bar (11) attached to the first arm (1), a second bar (12) attached to the second arm and a third bar (13) attached to the free end (71) of the second section (7) from the bracket (4). The union of the third bar (13) to the plate (10) is fully integral, without freedom of rotation, while the first bar (11) and the second bar (12) are attached to the plate (10) with freedom of movement. turn. So that the first joint (31) and the second joint (32) are misaligned with the joints of the articulated bars (11,12). Normally the plate (10) will be triangular with a bar (11,12,13) in each corner.

Thus, when the lower section (6) is folded with respect to the arms (1,2) and the second section (7), the free end (71) performs the movement of the plate (10) that transmits it to the two arms (1,2). Consequently, the arms (1,2) are folded together with the sections (6,7). For its part, the handle (5) can be folded independently.

A latch (not shown) makes it possible to lock the lower joint (9), between the lower section (6) and the second section (7), consequently blocking the entire carriage. These types of latches are known in the trolley art. For example, it can be a projection that locks in position the lower hinge (9), moved by a spring, and which is removed by pulling a lever on the handle (5) or on the upper hinge (8).

The arms (1,2) and the different sections (6,7) can be joined by (not appreciable) stiffening cross members. They also have hooks for the placement of the cart basket.

Claims (1)

1- Shopping cart, comprising a folding structure with a base that carries at least two wheels and a support (4) for a basket or bag topped with a handle (5), characterized in that: The base is formed by two pairs of arms (1,2) finished off in wheels, each first arm (1) fixed to the support (4) by a first joint (31) and to a second arm (2) by a second joint (32 ), the first joint (31) being arranged above the second joint (32); the support (4) is separated into: at least one lower section (6) attached to the first joint (31) and a second section (7) fixed to the lower section (6) by a lower joint (9) separated from the lower end of the second section (7), generating a free end (71); the sections (6,7) and the handle (5) being folded in Z; and why you understand at least one plate (10) close to the first arm (1) from where it comes out: a first bar (11) articulated to the plate (10) and attached to the first arm (1); a second bar (12), articulated to the plate (10) and attached to the second arm (2); and a third bar (13) fixed without rotation to the plate (10) and attached to the free end (71) of the second section (7); and at least one latch of the lower joint (9). 2- Shopping cart, according to claim 1, characterized in that the plate (10) is between the first two bars (1). 3- Shopping cart, according to claim 1, characterized in that it comprises two sets of plate (10) and bars (11,12,13). 4- Shopping cart, according to claim 1, characterized in that the plate (10) is triangular, with a bar (11,12,13) in each corner.