FR2580246A1 - REINFORCEMENT DEVICE, PARTICULARLY FOR TRANSPORT TROLLEY, PARTICULARLY FOR USE IN SELF-SERVICE STORES - Google Patents

Abstract

THIS DEVICE IS INTENDED FOR TROLLEYS INCLUDING A BASKET 1, A BASE 9 FOR SUPPORTING THIS BASKET, INCLUDING AT LEAST TWO ELEMENTS 10, 11 EACH LOCATED UNDER BASKET 1 IN THE NEIGHBORHOOD RESPECTIVELY OF ITS SIDE EDGES AND CONTAINING A PAIR OF PARALLEL METAL WIRES 10A 10B, 11A 11B, EACH ELEMENT 10, 11 HAVING A SUPPORTING PART FIXED UNDER THE BOTTOM 3 OF THE BASKET AND AT LEAST ONE EXTENSION ENSURING UNDER THIS SUPPORTING PART THE ASSEMBLY AND IMMOBILIZATION OF A BRACKET 16 FOR SUPPORT OF ' A SCREED 15 CARRYING A WHEEL 14 OF THE TROLLEY. THIS DEVICE INCLUDES A TRANSVERSE SPACER WHOSE CENTRAL HORIZONTAL PART IS PARALLEL TO THE BOTTOM 3 OF THE BASKET BETWEEN THE TWO ELEMENTS 10, 11 OF THE BASE 9, THIS SPACER EXTENDING TOWARD THE EXTERIOR BEYOND EACH ELEMENT BY AN EXTENSION BENDED BY RELATING TO ITS CENTRAL PART, FOLDED DOWN, AND PRESENTING AT ITS END AN OPEN LOOP COMING TO APPLY AGAINST WIRES 10A 10B OR 11A 11B CONSTITUTING THIS ELEMENT, IN ORDER TO IMMOBILIZE BETWEEN THE TWO SIDES OF THE LOOP A PLATE OF SUPPORT 18, BOLTED AGAINST THE SUPPORT BRACKET 16 OF THE CORRESPONDING WHEEL HOOK.

Description

The present invention relates to carts

  made available to customers of free stores

  service to transport the selected products and goods.

  These trolleys consist of a large transport basket located at a certain height with respect to a lower base on which the wheels are fixed, an operating handle being provided at the upper part of the end.

back of the set.

  In order to reduce their size when these trolleys are awaiting use, they are designed so that they can be embossed one inside the other.

  other. For this purpose, the rear vertical wall of the cor-

  transport rod is constituted by a hinged flap

  the place of its upper edge so that it can be supported

  lifted to allow engagement of the front end of the

  basket from another cart. For its part, the lower base

  laughing these carriages also has a shape allowing the nesting of several carriages into each other by engagement of each of them in the rear end of a

other cart.

  The basket thus formed is supported by a support base, itself comprising four wheels for moving the carriage, these wheels usually being carried by pivoting yokes at the front of the carriage and by movable or fixed yokes around a vertical axis, at the back of it. This base can be produced in various variants adapted to the uses of the trolley. In one

  more particularly advantageous embodiment, in particular

  ment of the kind described in French patent 82 20184 in the name of the Applicant Company, the base of the trolley is formed by means of two pairs of metal wires, disposed respectively on one side and the other of the side edges of the basket. and suitably folded, in 2 particular c2580246 to present a central part in a position close to the horizontal, this inclination being

  variable, as necessary for fitting the carts.

  This part is welded under the underside of the basket; it is extended by a front part and a rear part respectively inclined downwards and which, at their opposite ends, are integral with means carrying the wheels of the carriage. Generally, due

  the efforts to which it is subjected during its use

  sation, the shocks it receives and the charges sometimes im-

  it has to bear when the basket is full

  of products or goods, metal wires made up

  killing the base, assembled in pairs on each side of the basket, are spaced a distance which allows the passage between them of one or more transverse spacers,

  ensuring better stiffening of the base. Of course

  other alternative embodiments of such a base have also been envisaged by the Applicant, while retaining the principle of two pairs of metal wires welded under the basket and suitably extended to serve as support for the means of fixing the yokes of the wheels of the cart. More specifically with regard to these

  fixing means, a particularly advantageous solution

  geuse has already been described in French patent 72 23501, also in the name of the Applicant, more particularly adapted to the case of a pivoting or fixed yoke and where the

  upper part of the yoke is provided with a separate piece

  bearing surface forming a vertical fixing lug, the end of which

  lower tee carries a stud capable of being engaged in an opening in the upper part of the yoke of the wheel to form the vertical axis of the latter and the width of which corresponds to the spacing provided between the two vertical wires belonging to the matching pair of wires from the cart base. In particular, the fixing lug can thus be mounted between the ends of the two metal wires of a pair of wires forming one of the

  lateral elements of the base, this tab then being bolt-

  born to a suitable piece placed against the opposite face and itself held between two small horizontal elements

  soldered to the ends of the vertical wires.

  The present invention aims at a further improvement.

  tee to carts of the kind mentioned above, consisting of a device which provides appreciable mechanical reinforcement of the base carrying the basket, at the same time as it facilitates the mounting and immobilization of the support means for the screeds

wheels of this cart.

  To this end, the reinforcement device considered, des-

  tiné to be mounted on a support base of the basket of a transport cart, especially for use in a store

  self-service, said base comprising at least two elements

  each placed under the basket in the respective vicinity-

  ment of its side edges and comprising a pair of wires

  parallel metal, each element having a part of ap-

  then fixed under the bottom of the basket and at least one extension

  ensuring under this support part the assembly and the immobilization

  sation of a support leg of a yoke carrying a wheel of the carriage, is characterized in that it comprises a spacer

  transverse whose horizontal central part is parallel

  lele at the bottom of the basket between the two elements of the base, this.

  spacer extending outward beyond each element

  by a bent extension with respect to its central part

  the, folded down and having at its end an open loop coming to be applied against the wires of the pair constituting said element in order to immobilize between the two

  sides of the loop a support plate bolted against the pat-

  support for the yoke of the corresponding wheel.

  Thanks to these provisions, the reinforcement spacer

  ment forming support beam under the basket ensures simul-

  temporarily by its lateral extensions, the fixing of the plates on which the legs of the corresponding wheel clevis are bolted, each clevis being held between the two vertically arranged ends of the pair of wires of a base element on the one hand and bolted against a plate immobilized between the two sides of the open loop of the extension of the spacer on the other hand. This results in greater simplicity of manufacture with a significant saving on the cost price of the carriage, in particular avoiding the welding on the ends of the wires of the two small horizontal elements necessary for immobilization.

  of the plate, these small elements being directly replaced

  cés by the sides of the loop suitably shaped.

  Advantageously, the reinforcing spacer crosses the space provided in each element of the base between the two metal wires of the corresponding pair of wires, thus ensuring an additional stiffening force for

the base supporting the basket.

  Usually, the support elements of the base mounted under the basket are arranged so as to extend in directions-slightly convergent from the rear to

  the front of the cart. Under these conditions and according to a characteristic

  complementary to the invention, the extensions

  of the reinforcement spacer beyond the two elements of the

  key are folded substantially at right angles and folded down so as to delimit with the pairs of wires

  plinth elements two substantially trianal profile systems

  gular, allowing a better resistance of the base and the carriage against shocks, by ensuring the whole a certain lateral elasticity absorbed by the deformation

  elastic of these triangular systems.

  Other characteristics and advantages of a provision

  reinforcement sitive established in accordance with the invention will appear

2580246

  again through the following description of an example of

  embodiment, given by way of nonlimiting indication, with reference to the appended drawings in which: FIG. I is a perspective view of a transport cart for self-service store, provided with an improvement according to the invention, - Figure 2 is an elevational view illustrating from the side the structure of one of the elements of the base of the support of the carriage of Figure 1, - Figure 3 is a top view of the support base, - Figure 4 is a partial view in elevation,

  illustrating the mounting of a carriage wheel by means of the

positive reinforcement.

  FIG. 1 describes a trolley according to the invention which comprises, in a known manner, a transport basket 1, the bottom of which is situated clearly above the ground, for example at a

  height between 35 and 45 cm. This basket is supported

  ted by a base mounted on four wheels, namely: two wheels at the front and two wheels at the rear. These wheels may or may not be orientable depending on the choice of the user. This basket being made up of a first series of crisscrossed wires 2 and folded over to form the lateral sides and the bottom

3 of this basket.

  These metallic wires 2 are themselves associated with a

  second series of wires 4 of the same kind constituting belts

  lateral stiffening of the assembly. These belts

  being arranged at different levels allowing resistance

  tance particular to shocks resulting from the nesting of the carriages into each other. The upper belt 5 can be produced either by a welded wire, or by a rectangular profile tube in which the ends of the wires 2 engage or are positioned, this belt thus avoiding any risk of catching an object or edge injuries

  upper wires 2 of the trolley basket 1.

  It also usually comprises a handle 6 allowing the user to direct it between the shelves of the store and at the rear of the basket, a door

6 2580246

  pivoting 7 whose role is in particular to allow for the storage of the carriages, the nesting of the latter in each other in a continuous line. Also and according to

  a conventional arrangement, the pivoting door 7 can be moved

  nie of a tilting system 8 forming a seat for transport

  of a child, sitting inside the basket 1.

  The basket I of the trolley thus produced is supported by a base 9 which, in the embodiment illustrated in the figure, consists in particular of two elements respectively 10 and 11, arranged in the vicinity of the lateral edges of the basket

and under it.

  Each of the elements 10 and 11 consists of a pair of metal wires, respectively 10a and 10b on the one hand, 11a and 1lb on the other hand, suitably separated from one another so as to allow the accommodation of spacers 12 and 13 respectively, the spacer 12 being mounted in the vicinity of the front part of the base 9 while the spacer 13 is fixed in its middle part and has a central recess allowing if

  fixing, in particular by welding, under the bottom 3 of the basket 1.

  The base 9 supporting the: basket 1 is mounted on

  wheels 14 four in number and fixed two by two respectively-

  front and rear. The two rear rollers are fixed to the ends of the elements 10 and 11 forming the base 9. Each of the rear rollers comprises a yoke

  support 15 which extends from a tab 16, according to a provision

  sition already described and claimed in French patent 72.23501 in the name of the Applicant Company, the dimensions of which are determined so that they can be placed exactly between the parallel ends of the wires 10a

  and lob, for example for element 10 of the base.

  This lug 16 on which the clevis 15 of each wheel 14 is fixed is immobilized by a system of screws and of nut or bolts 17 against a transverse plate 18, mounted on the other side of the lug 16 relative to the ends of the son 10a and 10b on the one hand, 11a and 11b on the other

7 2580246

  of the two elements of the base 9. The front rollers are screwed onto a flatbed 19 connected to the wires 10a, 0lob, 11a,

  llb by a folded part 20 their ends (Figure 2).

  This flat iron 19 has square holes 19a visible in FIG. 3 and able to receive the front rollers at

  by means of a rod and nuts or bolts.

  In accordance with the invention, on the transport trolley shown in FIG. 1, a reinforcing device is adopted which makes it possible to provide this trolley, on the one hand, with better impact resistance that it undergoes during its use and on the other hand to facilitate the mounting of the wheel fastening means 14 at the ends of the elements of the base, in particular without having to attach at least to the rear wheels of the carriage the sections of transverse wires

  for immobilizing the support plates.

  To this end, and as illustrated more particularly in FIGS. 2 to 4, the base 9 of the carriage in question is associated with a complementary transverse spacer 21 comprising a central part 22 which extends under the bottom 3 of the basket 1 and which, in particular , crosses the space delimited between the pairs of metal wires 10a and 10b or lia

  and 11b of the elements 10 and 11 of the base.

  Beyond these elements 10 and 11, the spacer 21 has two extensions, respectively 23 and 24, bent at right angles to the central part 22 (FIG. 3) and also folded down towards the corresponding wheels, as illustrated in the figures

2 and 4 in particular.

  In the embodiment considered, each of the elements 10 and 11 of the base 9 is produced in accordance with the provisions already envisaged in French patent 82 20184 in the name of the Applicant Company and comprises in particular three parts schematically designated in Figure 2 under the references a, b and c, the central part has fixed under the bottom 3 of the basket 1 by welding or other connecting means is 8 LV 7w2580246 extending by the parts b towards the front of the carriage and c towards the rear of the latter ci, the elements 10 and 11 being further, as shown in Figure 3, arranged under the carriage in a slightly convergent manner from the rear to the front thereof. Thanks to these provisions, we see that the spacer

  transverse reinforcement 21 delimits beyond the elements

  elements 10 and 11 with respect to its central part 22, by means of its lateral extensions 23 and 24, two systems of generally triangular shape which, in operation of the carriage, not only ensure better stiffening of the base 9 for supporting the latter make it possible to give him

  a certain transverse elasticity, absorbing more effectively

  placement of the shocks and vibrations it undergoes during

employment.

  In the example illustrated in FIGS. 2 to 4, each extension of the reinforcement spacer 21, in particular

  in these figures the extension 23, comprises at its end

  miter an open loop 25 whose sides are directly delimited by two parts, respectively 26 and 27 belonging

to the extension itself.

  These parts 26 and 27 can thus ensure, as shown

  felt in FIG. 4, the immobilization of the plate 18 which, by means of the bolts 17, achieves the fixing

  wheel 14 at the lower end of the corresponding element

  on the base 9, by holding the tab 16 extending the

clevis 15 of this same wheel.

  In the example described, only the rear wheels 14 of the carriage, assumed to be made with pivoting yokes are thus immobilized on the ends c of the elements and 11 of the base 9 by means of the open loop extensions 25 of the reinforcement spacer 21. Of course, one could alternatively provide a similar arrangement to ensure the maintenance of the front wheels of the trolley, again eliminating the sections of transverse wires 19 and 20 attached to the ends of the wires 10 and 11 of

9 2580246

  the element corresponding to the end of part b thereof -

  this. Likewise, it goes without saying that the particular shape of the base shown in the example described, comprising two lateral elements with a central part fixed under the basket and two end parts extending this central part and directed downwards could be arranged.

  in a different way, as long as the elements

  tituant this base comprise two pairs of wires delimiting between them at their end, a space in which exactly engages the tab extending the support yoke

  carriage wheels. Whatever the configuration

  given to the elements of the trolley base, it is always

  possible to bring a transverse spacer under it

  dirty and in accordance with the invention, to extend this

  nière by an open loop coming to be fixed against the

  ends of the wires of the elements of the base to ensure the

  mobilization of the bolt-on plates against the legs

  extension of the fork wheels' yokes.

  Consequently, it goes without saying that the invention is in no way limited to the example of embodiment more especially envisaged above; on the contrary, it embraces all its variants.

2580246

Claims (3)

  1. Reinforcement device, in particular for carriage   transport usable in particular in free stores   service, comprising a basket (1), a base (9) for supporting this basket, comprising at least two elements (10,11) each disposed under the basket (1) in the vicinity respectively of its lateral edges and comprising a pair of parallel metal wires (10a 10b, 11a 11b), each element (10,11) having a support part (-_ fixed under the bottom (3) of the basket and at least one extension (b, c) ensuring under this support part the mounting and immobilization of a lug (16) for supporting a yoke (15) carrying a wheel (14) of the carriage, characterized in that it comprises a transverse spacer (21) of which the horizontal central part (22) is parallel to the bottom (3) of the basket between the two elements   (10,11) of the base (9), this spacer extending towards the ex-   térieur beyond each element by an extension (23, 24) bent relative to its central part, folded down, and having at its end an open loop (25)   coming to apply against the wires (1Oa 10b oulla 11b) cons-   tituant said element, in order to immobilize between the two sides (26,27) of the loop 25 a support plate (18), bolted   against the support lug (16) of the corresponding wheel yoke   laying. 2. Reinforcement device according to claim 1, characterized in that the transverse spacer (21) crosses the space provided in each element (10,11) of the base (9) between the metal wires (10a 0lob, 11a 11b) of the corresponding pair of wires. 3. Reinforcement device according to claim 2, characterized in that the extensions (23,24) of the transverse spacer (21) beyond the two elements (10,11) of the base (9) are folded substantially at an angle straight and folded down so as to delimit with the pairs of wires (10a 0lob,   11a 11b) of the base elements two sensing profile systems so triangular.