FR2752405A1 - MOBILE CARRIER FOR LOADS FORMING CARRIAGE AND ITS CHASSIS - Google Patents

Abstract

The invention relates to a mobile load support. It relates to a carriage which has an additional support (60) for loads which comprises two guide devices (62) connected to the carriage and which define guide channels (68) arranged parallel and at a distance from each other, and a support device loads having side portions (72 ') accommodated in the guide channels (68) so that the load carrying device is supported and guided in a sliding movement in a plane relative to the carriage by the device (62) guide, the arrangement being such that the lateral parts (72 ') and the guide devices (62) cooperate substantially along the entire length of the respective guide channels. Application to shopping trolleys.

Description

The present invention relates to transport trolleys

  carrying loads and more specifically, but not exclusively, shopping carts for use by

example in supermarkets.

  Known shopping trolleys used in supermarkets usually include a frame having wheels fixed in the corner regions, a basket attached to the frame by welding, and a push handle, attached to

  the upper rear end of the basket.

  The achievements of these known shopping trolleys are relatively inflexible and can not easily be modified according to the particular demands of the trolley buyers and, after the purchase, they do not

  can not be modified to take account of new

  conditions set by the buyer. As a result,

  manufacturers of trolleys, for example trolleys with

  usually offer buyers a range of trolley options, with individual configuration

  frame and basket for each configuration.

  In order for the load carrying capacity of the shopping carts to be greater, it is already known to place an additional load support comprising a structure

  in the form of a shelf with a support structure of the

  manages. Traditionally, the shelf and its supporting structure are intended to allow extraction of the shelf towards the inside of the trolley so that goods, for example pallets of beer bottles, can be removed.

  transported. The support structure is often relative-

  complex and it can often be mounted only on the cart for which it was made specifically. In addition, the complexity of known support structures is such that mounting on existing carriages is not possible or not profitable. Examples of known additional charge carriers are described in US-2,890,058, US-2,903,269, DE-2,742,958 and DE-3,448,335. It may be noted that it would be advantageous to provide additional support. of loads which has a simple and inexpensive support structure, which can be easily mounted on trolleys of a wide range of embodiments, and which can be mounted

on existing trolleys.

  The subject of the invention is the at least partial elimination of the aforementioned drawbacks of these mobile supports

known charges.

  Thus, the invention relates to a mobile load carrier which comprises an additional support for loads.

  which comprises two guiding devices connected to the

  mobile port of charges and which delimit channels

  guide members, said channels being arranged parallel and mutually remote, and a load-supporting device having respective lateral portions accommodated in guide channels so that the load-supporting device is supported and guided in a sliding motion. in a plane relative to the movable support of loads by the guide device, the arrangement being such that the lateral parts and the guiding devices co-operate substantially along the entire length of the

respective guide channels.

  The invention also relates to a mobile load carrier which comprises a frame, a plurality of mounting devices placed one above the other remotely so that a plurality of load bearing receptacles can be mounted on the frame by the mounting devices, two load support receptacles mounted on the chassis by

  a respective mounting device so that during the use of

  the load to be transported may be placed in the load receptacles and an additional load carrier comprising two remote guide devices connected to the movable and opposite load carrier, and a load support device carried by the guide device. and slidable along the guide means so that it is guided and slidable relative to the frame by the guiding devices. The invention also relates to a mobile load carrier frame which comprises a plurality of mounting devices occupying spaced apart locations so that one or more load bearing devices can be selectively mounted to the frame and that during use , a load to be transported can be placed in

  a load-carrying device or on such a device

  the chassis further having an additional load support, the additional load support comprising two guiding devices connected to the chassis so that they are remote and opposite, and a load-bearing device carried by the guiding device and which can slide along the guide device so that it is guided during its sliding relative to the frame

by guiding devices.

  Other features and advantages of the invention

  will emerge better from the following description

  examples of embodiments, with reference to the accompanying drawings in which: Figure 1 is a side elevational view of a movable support of loads; Figure 2 is a plan view of the mobile load carrier whose baskets are removed; Figure 3 is a perspective view of a lower portion of a movable load carrier in the direction A ndicated in Figure 2, the baskets being removed; Figure 4 is a perspective view of an upper portion of the movable load carrier in the direction A shown in Figure 2, the basket being removed; FIG. 5 is a perspective view of an additional support for charges of the mobile load carrier; Figure 6 is a side elevational view of another movable load carrier; and FIG. 7 is a view of the moving load carrier of FIG. 6 with a different basket configuration

mounted on the chassis.

  Referring to Figures 1 and 2; a mobile support 5

  loads (hereinafter referred to as a shopping cart)

  carries a frame 10 having an upper mounting member 12 'and a lower mounting member 12' with which one or more load bearing devices 14, 16, also referred to as "baskets" in the following, can be selectively mounted on the frame so that, during use, a load to be transported can be placed in a load-carrying device 14, 16 or on such a device The frame 10 is shown with two load-bearing devices in the form of baskets 14, 16 mounted on the

  frame by the 12 ', 12 "mounting members.

  The frame 10 comprises two lateral members 18 placed in the longitudinal direction of the carriage 5. The lateral members 18 are distant and are interconnected by a first crosspiece 22 placed at the front end of the carriage and a second crossbar 24 placed towards the rear end of the carriage 5. In addition, the frame 10 comprises two members

  End curves 26 and two plates 30 forming cheeks.

  The end members 26 are arranged so that they are substantially vertical and they are connected by welding to a respective lateral member 18. A cheek plate 30 interconnects each lateral member 18 and a member 26. end in the region in which these members are connected to each other and are used for the rehnorcement of the seal formed between the two bodies. The

  cheek plates are connected by the respective organs.

  side and end plates by welding.

  A wheel 32 is attached to the front end of each side member 18 and at the lower end of each

end member 26.

  A handle support bracket 34 is mounted to

  the upper end of each curved member 26 of

  mity and a handle 36 to push, placed transversely to

  carriage, is disposed between the bracket brackets 34.

  The upper mounting device comprises two mounting members 12 'and the lower mounting device comprises two mounting members 12 ". Referring to Fig. 3, the lower mounting members 12" are each formed of a metal plate 40 which is bent at a first end for the delimitation of a groove 42 having a section of generally semicircular shape. A notch 44 located approximately midway along the groove 42 is disposed in the plate 40. Two through holes are formed in the plate 40 so that the lower mounting member 12 "can be attached to a plate 30 plays by

  bolts 46 and captive nuts 48.

  Referring to Figure 4; the upper members 12 'of assembly are each formed of a metal plate 50 which is curved in a similar manner to a first end for the delimitation of a groove 52 of general section in

  Semi circle. A notch 54 placed approximately half way

  distance along the groove 52 is formed in the plate 50. At the opposite end of the groove 52, the plate 50 has a configuration which delimits two branches 56 which are curved in opposite directions towards the part which delimits the groove 52 if although the metal plate 50 can wrap around an end member 26. The plate 50 has through holes that allow it to be temporarily fixed

  to an end member 26 by screws 58.

  The bolts and screws used for fastening the mounting members 12 ', 12 "to the frame are preferably of type xrf which can only be loosened with special tools.The bolts and screws called" security "are well Known to those skilled in the art and not described in more detail, reference will now be made to Figures 1, 2 and 5. The carriage 5 has an additional load carrier 60 which can be used for example for transporting pallets of bottles. The support 60 may be moved between a non-use position (shown in FIG. 2) and a position in which the objects

  can be transported (as shown in Figure 1).

* 2752405

  The additional support 60 of charges comprises two guiding devices each comprising an elongate member 62 and a support member 64. The elongate members 62 protrude from the cross member 24 to which they are each fixed by a single welded joint. Each member 62 has a generally V-shaped cross section and is connected to the cross member in the region of the outer end of a branch of the V so that the vertex 66 of the V is facing outwardly of the frame, and a generally V-shaped groove delimited by the member 62 is placed at a distance from the groove of the other member 62 and parallel thereto. The support members 64 are preferably formed of molded plastic, for example "nylon". The elements 64 have a generally V-shaped cross-section which substantially corresponds to the section of the elongated members 62. Each element 64 delimits a guide channel 68 having a generally V-shaped shape. The elements 64 each have a cavity with surfaces opposite the surfaces. which delimit the guide channel 68. The cavities have a length that corresponds substantially to that of an elongated member 62 and define a projection 70 (shown in Figure 2) at any end of the support member 64. The configuration of the elongated members 62 and support members 64 is such that a support member can be pushed into and against the V groove of a member 62, the member 62 being tightly fitted into the cavity of the support member, the the arrangement being such that the projections 70 substantially prevent movement of the support member in the longitudinal direction of the elongate member 62. After this mounting, the support members 64 define guide channels 68 which are spaced parallel and opposite and that stretch in the direction

longitudinal carriage.

  The additional load carrier further comprises a load-supporting device (hereinafter referred to as a shelf) which is supported by the support members 64 so that it can slide relative to these elements between positions of use and not used. The load support shelf comprises a metal frame 72 of generally rectangular shape consisting of sections of metal rod. The chassis has parts

  lateral 72 'which are housed in the guide channels 68.

  The load-bearing shelf further includes cross members 78, 80, 82, 84 disposed between the side portions 72 'of the frame. The sleepers that are welded to the frame 72 give strength and allow

  the support of variable value charges by the shelf.

  The cross member 82 has its ends disposed at the upper face of the frame 72. These ends are intended to act as stop members which limit the movement of the shelf towards the front of the carriage, that is to say tell who

  limit the insertion of the shelf inside the carriage.

  A stop plate 88 is attached to the front end of the shelf and is intended to limit the movement of the shelf towards the rear of the carriage, that is to say to limit

  the extraction of the trolley shelf.

  A thrust bar 89 is placed at the front end of the additional load carrier. This thrust bar 89 is formed of a metal rod which is bent so that it has a generally U-shaped plan and, in lateral elevation, a general L shape. The free ends of the push rod are connected to the forward transverse portion of the frame 72, the arrangement being such that a central portion 89 'of the bar of

  thrust is below the plane of the frame 72.

  The shelf has, at its rear end, a handle 90. This handle 90 is formed of a rod which is U-folded and which has hook portions 90 'at each end, the hook portions cooperating with the frame 72 so that the handle can rotate around the frame. A substantially C-shaped transverse bar 92 is attached to the handle 90. A limit bar 94 is attached to the crossbar 92. This limit bar 94 is formed of a metal rod that is folded to define a

  U-shaped central part having a branch 94 'at each end

  mité, each branch being perpendicular to the central part. The branches 94 'of the push bar are connected to the transverse bar so that the central U-shaped part of the limit bar is in a plane perpendicular generally to the plane of the handle 90

and the crossbar 92.

  The push bar 89, the handle 90, the crossbar 92 and the limit bar 94 are arranged so that the shelf is automatically pushed into the carriage when a second carriage 5 is pushed to the rear of the first carriage 5 and allows a nesting of the carriages,

  as described in more detail later.

  The additional support 60 of loads is mounted on the carriage 5 by initial welding of the elongated members 62 to

  24. The support elements 64 are then pushed

  against the respective elongate members 62 so that these members are partially lodged in the cavities formed for this purpose at the rear part of the support elements. The frame 72 whose stop plate 88 is removed is then introduced from the rear of the carriage so that the side portions 72 'are housed in the guide channels 68. At this time, the support members are firmly held in position against the elongated members 62. Since the side portions 72 'are in cooperation with the V of each of the support members and are placed along their length in the channels, the frame 72 prevents the falling of the support elements outside the grooves delimited by the elongate members and the projections 70 prevent movement of the support elements in the longitudinal direction of the

elongate organs 62.

  To complete the installation, the stop plate 88 is fixed to the frame 72. The latter can then be slid backwards and forwards in the longitudinal direction of the

  trolley by being guided and supported only by cooperative

  the lateral portions 72 'of the surfaces of the support elements which delimit the guide channels 68. This range of movement is limited at one end by cooperation

  between the stop plate 88 and the front ends of the

  and at the other end by cooperation between the cross member 82 and the rear ends of the elements

of support.

  The basket 16 is mounted on the frame 10 by placing the mounting members 12 "in cooperation with a rear end portion of the basket, more precisely and as indicated in FIGS. against the opposite corner portions of the rear of the basket so that a substantially vertical corner rod 100 and a longitudinal rod 102 of the basket are housed in the groove 42 and the notch 44 respectively. The basket 16 and the mounting members 12 "are then introduced between the cheek plates 30 and the assembly members 12 'are fixed.

  to cheek plates by bolts 46 and nuts 48.

  The basket 14 is attached to the frame in a similar manner.

  However, in this case, the mounting members 12 'are directly screwed on the upper end members 26 of the frame with screws 58. For mounting the basket 14 on the frame, it may be preferable to place first the members 12 'for mounting against the respective end members 26 and then insert the basket between them and push the mounting members against the corners of the basket so that the necessary rods of the basket are housed in

the grooves 52 and the notches 54.

  The baskets 14, 16 each have a pivoted rear door

  aunt and a bottom intended to be inclined relative to the horizontal plane so that the baskets of successive carriages can be housed in each other so that the carriage 5 is nestable. The construction of baskets that allow such nesting is well known to men of the

  profession and it is not described in more detail.

  As indicated previously, the handle 90, the transverse bar 92 and the push bar 94 are arranged so that the shelf can be automatically pushed into the non-use position shown in FIG. 2 so that it can be interlocked. In Figure 2, the handle is shown in a first position in which it is substantially perpendicular to the plane of the frame 72. In this raised position, the handle can be used to pull the shelf outwardly. at

  the rear of the truck to the position of use

  Figure 1. It should be noted that the cooperation of the central part of the push bar 94 and the face

  bottom of the cross member 84 limits the pivoting movement

  the handle away from the chassis plane so that

  it can remain in a raised position and thus be used

  used as an end stop to prevent the rearward movement of goods placed on

the shelf.

  When a second carriage 5 is introduced at the rear of the first carriage 5, the front end of the basket 16 of the second carriage engages the handle 90 and the cross bar 92 and causes them to pivot towards the front end of the carriage. first carriage until the handle and the branches 94 'of the bar 94 bear against the cross-member 84. In this position, the handle 90 is substantially in the plane of the frame 72 and the central portion of the bar 94 of limit goes down compared to

  frame at an almost straight angle. When inserting

  the second carriage continues, the crossmember 22 of the second carriage passes under the bar 94 and finally comes into contact with the central portion 89 'of the push bar 89 so that the continuation of the introduction of the second carriage in the first trolley causes the push of the shelf towards the front end of the first carriage and allows a nesting. It should be noted that the frame 10 having the mounting members 12 ', 12 "can easily have other arrangements of load bearing receptacles mounted.These arrangements allow the use of the same frame to obtain different configurations For example, it is possible to provide a carriage in which one of the receptacles is a basket, and furthermore, since the mounting members are removable, different baskets can be easily mounted on the cart. depending on the changes in the criteria set by the buyer or for the replacement of a basket which is deteriorated, an example of another basket arrangement placed on the frame 10 is described with reference to FIG. In this case, the chassis has a deep basket 110 mounted using the mounting members 12 ', 12 ". The use of the two sets of mounting members 12 ', 12 "for the support of the basket 110 on the frame allows a robust mounting of the basket that can withstand heavy loads that can

  to be transported indoors.

  The frame 10 is shown in Figure 6 with a different set with push handle. The thrust handle 112 is a U-shaped member mounted on the vertical members 26 of the frame by respective sleeves 114 support. A carriage lock 115 is shown mounted to

  the upper end of a vertical member 26.

  Another example of a basket assembly placed on the frame 10 is shown in FIG. 7. In this case, a short basket 116 is mounted on the frame by the upper mounting members 12 'and a longer basket 118 is mounted on the frame by the lower members 12 "mounting, the long basket being mounted below the basket short and protruding more forward than the basket

  higher, considering the direction of movement of the support.

  It should be noted that the additional load carrier 60 has a simple construction and can therefore be manufactured cost-effectively. In addition, as the load support shelf is transported and guided by the support members 64 which are themselves supported only by the elongate members 62 which are each mounted on the carriage 5 by a single welded joint, the additional support 60 charges can easily be mounted on many

  achievements of trolleys and not only on the chassis 10.

  In addition, it should be noted that the additional support of charges 60 can be easily mounted on trolleys.

the location of use.

  It should be noted that since the displacement of the shelf of the additional load support 60 is in a plane and the support can be mounted in a substantially horizontal direction, it can be housed in a relatively limited space below the baskets. It should also be noted that the arrangement of the support elements 64 and the frame 72 ensures a smooth and controlled sliding of the shelf. The side portions 72 'of the frame 72 are in direct contact with respective support members in two directions along the entire length of the support members 64 so that the shelf

  can not switch or bend between user positions

  and non-use. Regular movement in a shelf plane reduces the jamming problem that can occur when the shelf can tip or bend

when moving.

  It is understood that the invention has been described and shown only as a preferred example and that

  may provide any technical equivalence in its

  constituent elements without departing from its scope.

Claims (33)

  Mobile load carrier, characterized in that it comprises an additional load support (60) which comprises two guiding devices (62) connected to the mobile load carrier and which delimit channels.   respective guides (68), these channels being arranged   together and at a distance from each other, and a load-supporting device having respective lateral portions (72 ') accommodated in the guide channels (68) so that the load-supporting device is supported and guided in a sliding motion in a plane relative to the movable support of loads by the guiding device (62), the arrangement being such that the lateral parts (72 ') and the guiding devices (62) co-operate substantially along the entire length of the respective channels guidance.   2. Support according to claim 1, characterized in that the guiding devices (62) are suspended at a   frame member (72) of the movable load carrier.   3. Support according to one of claims 1 and 2,   characterized in that the guiding devices (62) are   each fixed to the frame (72) by a single seal.   4. Support according to any one of the claims   1 to 3, characterized in that the guide channels (68) are intended to cooperate with the respective lateral parts (7-2--) in two directions.   5. Support according to claim 4, characterized in that the channels (68) guide, in cross section, substantially V-shaped.   6. Support according to any one of the claims   characterized in that the guiding devices (62) each comprise an elongated member which is connected to the movable support of loads and devices (64) with support elements mounted on the elongated element, the devices (64) with elements. of support delimiting the channel (68) guiding.   7. Support according to claim 6, characterized in that the devices (64) with support members each comprise a cavity device for accommodating at least partially the respective elongate member so that, during use, the movement of the devices (64) with support members in the longitudinal direction of the organ   lying is practically forbidden.   8. Support according to one of claims 6 and 7,   characterized in that the devices (64) with   support are formed of plastic material.   9. Support according to any one of the claims   characterized in that the load-supporting device has a stop device (88) for limiting   the amplitude of the relative sliding movement.   10. Support according to any one of the claims   preceding, characterized in that the support device   charges is supported and guided solely by the provisions guiding systems (62).   11. Support according to any one of the claims   preceding, characterized in that the guide channels (68) are turned towards the inside of the movable support of charges, in opposite directions.   12. Support according to any one of the claims   characterized in that the load-supporting device comprises a generally planar frame device (72) which delimits the side portions (72 ') and a pull handle (90) mounted on the frame device ( 72) and movable between a use position and a   position of non-use in which it is practiced   only in the plane of the chassis device (72).   13. Support according to claim 12, characterized in   the handle (90) to be pulled out has a provision   device for cooperating with the frame device (72) to limit movement of the handle (90) to be pulled towards   remote outside of the non-use position.   14. Support according to any one of the claims   preceding, characterized in that it comprises a device connected to the load-supporting device and intended to cooperate with a mobile support of similar charges, so that the load-supporting device can be pushed   from a position of use in the direction of the end   mity before the mobile support charges so that it allows   the interlocking of such mobile load carriers.   15. Support according to any one of the claims   previous, characterized in that the side portions (72 ') cooperate with the respective guiding devices substantially over the entire length of the guiding devices (62).   16. Support according to any one of the claims   previous, characterized in that the lateral parts (72 ') are each delimited by a rod section metallic.   17. Support according to any one of the claims   preceding, characterized in that it comprises two baskets   (14, 16) mounted one above the other, the lower basket   more forward, considering the   direction of movement, than the upper basket.   Mobile load carrier, characterized in that it comprises a frame (10), several mounting devices (12 ', 12 ") placed one above the other at a distance so that several receptacles (14, 16) of load support can be mounted on the frame (10) by the mounting devices (12 ', 12 "), two load bearing receptacles (14, 16) mounted on the frame (10) by a respective mounting device (12 ', 12 ") so that, during use, the loads to be transported can be placed in the receptacles (14, 16) of the   additional charges and support (60) of charges including   two remote guiding devices (62) connected to the movable and opposite load carrier, and a load bearing device carried by the guiding device (62) and slidable along the guiding device (62) so that it is guided and can slide relative   to the frame (10) by the guiding devices (62).   19. Support according to claim 18, characterized in that at least one of the receptacles (14, 16) for supporting charges is a basket.   20. Support according to claim 19, characterized in that at least one of the mounting devices (12 ', 12 ")   is intended to cooperate with the basket.   21. Support according to claim 20, characterized in   the mounting device (12 ', 12 ") or each   mounting device (12 ', 12 ") for cooperating with a basket comprises two mounting members which can be removably attached to the frame (10) at remote locations and each having a device for accommodating at least one member the basket so that the basket can be mounted between the mounting members and be supported by them.   22. Support according to claim 21, characterized in that the housing device comprises a first and a second cavity device for housing respective members of the basket, the first of the bodies protruding upwards and the second of the bodies protruding in The direction longitudinal basket.   23. Support according to any one of the claims   18 to 22, characterized in that the receptacles (14, 16) are mounted one above the other, and the lowest of the receptacles (14, 16) protrudes further in the direction of advance when the support is displaced. mobile of charges that the   upper portion of the receptacles (14, 16).   24. Support according to any one of the claims   18 to 23, characterized in that the support devices of   have respective lateral parts (72 ') defining   metal rods, the side portions (72 ') being parallel to the guiding devices (62) so that they are accommodated in the respective guiding devices (62) and slidable along the devices (62) for guiding.   25. Chassis (10) for movable support of loads, characterized   characterized in that it comprises a plurality of mounting devices (12 ', 12 ") occupying spaced apart locations so that one or more load bearing devices can be selectively mounted to the frame (10) and that during use, a load to be transported can be placed in a load-supporting device or on such a device, the frame (10) further having an additional load support (60), the additional load support (60) comprising two devices (62) guide connected to the frame so that they are distant and opposite,   and a load bearing device carried by the arrangement   guide (62) which can slide along the guiding device (62) so that it is guided during its sliding relative to the frame by the guiding devices (62).   26. Chassis according to claim 25, characterized in that at least one of the mounting devices (12 ', 12 ") is adapted to ensure the temporary mounting of such a device.   load support device on the chassis.   27. Chassis according to claim 26, characterized in that at least one of the mounting devices (12 ', 12 ")   can be temporarily attached to the chassis.   28. Chassis according to claim 27, characterized in that at least one of the mounting devices (12 ', 12 ") comprises two mounting members which can be fixed to the remote frame and in opposite form for the mounting of   devices for supporting charges between them.   29. Chassis according to any one of the claims   28, characterized in that it comprises two vertical members generally spaced apart and interconnected in a first end region by a push handle device (36), and at least one of   (12 ', 12 ") is intended for the temporary assembly   of such a load bearing receptacle on the vertical organs.   30. Chassis according to any one of the claims   at 29, characterized in that at least one of the mounting devices (12 ', 12 ") is intended to cooperate with an end region of such a load-supporting device so that, during use, the support device of   loads protrude from the frame cantilevered.   31. Chassis according to any one of the claims   25 to 30, characterized in that the guiding device (62)   protrudes below the transverse member of the frame.   Mobile carriage for load support, characterized in that it comprises a frame (10) according to any one   Claims 25 to 31 and at least one device for   load carrier (14, 16) temporarily mounted on the frame (10) by at least one mounting device (12 ', 12 "). Trolley according to Claim 32, characterized in that the load-supporting device (14, 16) or the   least one load support device is a basket.