WO2010134883A1

WO2010134883A1 - System for securing shelf accessories to a shelf

Info

Publication number: WO2010134883A1
Application number: PCT/SE2010/050542
Authority: WO
Inventors: Henrik LINDÉN; Jan TÖRNLUND
Original assignee: Hl Display Ab
Priority date: 2009-05-19
Filing date: 2010-05-19
Publication date: 2010-11-25
Also published as: EP2432351A1; EP2432351B1; SE533494C2; CN102421335A; DE10778023T1; DE10778023T8; RU2517102C2; EP2432351A4; SE0900680A1; PL2432351T3; PT2432351T; RU2011148788A

Abstract

System for securing a shelf accessory to a shelf, comprising a front securing device (20), a rear securing device (30) and a shelf accessory (10) having a front engagement member (11) configured for engagement with the front securing device, as well as a rear engagement member (40) configured for engagement with the rear securing device. The rear securing device comprises a first stop face (32a) and the rear engagement member comprises a second stop face (47), which first and second stop faces are configured to, in mutual contact, prevent the rear engagement member from being disengaged from the rear securing device when the shelf accessory is held substantially parallel with the top side of the shelf, and to allow the rear engagement member to be released from the rear securing device when the front end of the shelf accessory is lifted such that the shelf accessory has assumed an angle to the top side of the shelf.

Description

System for securing shelf accessories to a shelf

Field of the invention The present invention relates to a system for securing shelf accessories to a shelf. The invention also relates to a shelf comprising such a system. The invention is especially well suited to the securement of shelf dividers, feed devices and other shelf accessories for use with shop shelves.

Background of the invention

In general stores, for example, goods are often displayed on shelves . In order to improve the display of the goods and facilitate the loading and unloading of the goods, a host of different accessories, such as shelf dividers, various types of feed devices, and various types of product trays, etc. are used. Such accessories are often fixed to the shelves.

According to the prior art, the accessories can be fixed to the shelf in a number of different ways, for example mechanically with screws or the like, by snap fastening or by adhesion with double-sided adhesive tape or the like.

The arrangements which are used to fix the accessories to the shelves should have some basic characteristics. One important characteristic is that it should be possible to fix the accessories in arbitrary positions along the length of the shelf, so that the distances between the accessories can be made arbitrarily long to fit different packagings and quantities of goods. In addition, the accessories should be firmly secured to the shelf to prevent them from being accidentally removed or displaced from their intended positions.

The securement of the accessories should also ensure that they stand steady, so that they do not tilt. In

RECORDCOPY-TRANSUTION (Rule 12,4) this context, it is of great importance that firm securement is ensured, at the same time as the securing arrangement allows the accessories to be easily fastened and removed.

The accessories should be secured to the shelf both at its front and rear end in order to prevent either end of the accessory from being lifted from the shelf. Especially if the accessory comprises a front plate or front stop plate which the goods rest against, for example in the case of a sloping shelf or a feed device, the force of the goods upon the front plate produces a turning moment upon the accessory, which endeavours to lift the rear portion of the accessory from the shelf. Such lifting of the rear end of the accessory is naturally undesirable, since it can cause disorder on the shelf and can result, moreover, in the front end of the accessory being turned out of its engagement with a front securing device, whereupon both the accessory and the goods can crash down from the shelf .

A desired characteristic is that it should be possible to arrange a shelf with a simple manoeuvre by first fitting the desired number of accessories to the shelf and then displacing them along the shelf into the definitive position of the respective accessory, so as finally to fix the accessories in these positions.

Even once the shelf is arranged and the accessories are placed in their respective positions, it is sometimes necessary to reorganize the shelf, with one or a few shelf dividers having to be moved, taken away or fastened. This is the case, for example, when the distance between two shelf dividers has to be adapted to a new product or product packaging of different dimensions. In order to facilitate such reorganization of parts of an already arranged shelf, it is therefore desirable for individual accessories to be able to be displaced along the shelf into a new position.

In the arrangement of a new shelf and in the reorganization of an already arranged shelf, it is desirable to be able to displace the accessories along the shelf by taking hold of just the front edge of the accessory and shifting the entire accessory by guiding the front edge in either direction. This eliminates the need to reach one arm and the hand in towards the rear end of the accessory so as simultaneously, with both hands, to displace both ends of the accessory along the shelf. Such simultaneous displacement of both ends of the accessory is both strenuous and ergonomically disadvantageous and complicated to perform, especially if the distance between shelves arranged one above the other is small and if goods present on the shelf make access to the rear end of the accessory difficult.

In addition, the arrangements for the securement of the accessories should be aesthetically appealing, should not unnecessarily hinder loading or unloading of goods onto or from the shelf or adjoining shelves, and should be simple and cheap to produce and assemble.

It is desirable, moreover, that the arrangements for securing accessories to a shelf should be able to be directly applied to pre-existing shelves without the need to exchange or adapt these existing shelves.

Apart from the fact that the accessories should be releasable from the shelf, it is an advantage if the fastening devices with which the accessories are fixed to the shelf are also detachable. This makes it easier, inter alia, to keep the shelves clean and to carry out major reorganizations of the shelves. Recently, magnetically working securing devices have therefore become increasingly popular. These fastening devices comprise a magnet, usually one or more thin permanent magnets with which the securing device can be detachably fixed to shelves made of magnetic material, such as steel. Once the securing device has been fixed magnetically to the shelf, the accessories can be detachably fixed, for example by snap-fastening action, to the securing devices .

Prior art DE 299 02 933 Ul describes a device for securing a shelf divider. The shelf divider comprises at its front and rear end mutually pretensioned jaws, which can grasp a front and a rear T-rail jutting up from the shelf. In order to allow displacement of the shelf divider along the shelf, both the front and rear jaws are required to be separated by the application of a separation force to a purpose-built member disposed on the front and rear jaws. It is therefore necessary to reach in to the rear end of the divider in order to allow decoupling and displacement of the divider.

WO 03/005862 A2 and US 5,803,276 describe systems for securing shelf accessories. In these systems, the rear end of the accessories is held fixed to the shelf by means of snap-fastening engagement with a rail jutting up from the shelf. In these systems, too, it is necessary to reach in to the rear end of the shelf accessory in order to obtain release of the rear end and thus allow displacement of the accessory.

WO 2005/084498 describes a system for securing shelf accessories, in which the rear end of the accessory has a first hook which engages with an oppositely directed second hook disposed on the shelf. The second hook is configured as a profiled element extending in the longitudinal direction of the shelf. With this system, securement of the rear end of the shelf accessory is obtained in the direction perpendicular to the shelf plane. This solution, however, offers no securement of the rear end of the accessory in the longitudinal direction of the shelf.

SE 531 411 C2 describes a system for fixing accessories to a shelf, which system comprises a rear securing device. The rear securing device resembles in certain respects the rear securing device described in WO 2005/084498, but additionally comprises a friction rail which, in contact with a rear engagement member disposed on the shelf accessory, also ensures firm securement of the rear end of the shelf accessory in the longitudinal direction of the shelf.

The systems described in WO 2005/084498 and SE 531 411 C2 offer good securement of the accessories under normal use and simple release, as well as relocation of the accessories. If the accessories are mistakenly disengaged from the front securing device, or if the front securing device is mistakenly displaced relative to the shelf, in these systems it can happen, however, that the rear engagement member disposed on the accessory is accidentally disengaged from the rear securing device. This can, in turn, cause the accessory to tip over or come loose from the shelf, which is not desirable. If the front securing device is magnetically fixed to the shelf, a knock against the shelf accessory or the front securing device can bring about rearward displacement of the front securing device and hence of the accessory. The rear engagement member of the accessory can then be disengaged from the rear securing device. There is consequently a risk that disorder is created on the shelf, for example if a passing customer happens to knock against a front securing device or an accessory with a customer trolley or a goods basket.

RECORD COPY-TRANSLATION | Summary of the invention

One object of the invention is therefore to provide an improved system for securing shelf accessories to a shelf.

Another object is to provide a system of this kind which deters the rear engagement member of the accessory from mistakenly being disengaged from the rear securing device .

A further object is to provide a system of this kind which allows simple intentional release and repositioning of the accessory.

One more object is to provide a system of this kind which allows simple repositioning of the accessory and which nevertheless allows the rear end of the shelf accessory to be firmly secured in mounted position.

Yet another object is to provide a system of this kind which is simple and relatively cheap to produce and easy to use with different types of shelves.

These and other objects are achieved with a device of the kind which is defined in the preamble to Patent Claim 1 and which has the distinguishing features defined in the characterizing part of the claim. The system for securing shelf accessories to a shelf comprises a front securing device, which is configured for fixing to the front edge of a shelf, a rear securing device comprising an elongated profiled element configured for fixing on top of a shelf substantially parallel with the shelf longitudinal direction, and a shelf accessory having a front engagement member configured for engagement with the front securing device, as well as a rear engagement member configured for engagement with the rear securing device. The rear securing device comprises a first stop face and the rear engagement member comprises a second stop face. The first and second stop faces are configured to, in mutual contact, prevent the rear engagement member from being disengaged from the rear securing device when the shelf accessory is held substantially parallel with the top side of the shelf, and to allow the rear engagement member to be released from the rear securing device when the front end of the shelf accessory is lifted such that the shelf accessory has assumed an angle to the top side of the shelf.

By virtue of the interacting stop faces on the rear engagement member of the shelf accessory, and the rear securing device, the rear end of the accessory is simply and effectively deterred from accidentally coming loose from the rear securing device if, for example, the front end of the shelf accessory or the front securing device suffers a knock or the like. This is especially advantageous if the front securing device is fixed to the shelf by means of a magnet, since such magnetic fixing can cause the front securing device and the accessory to be displaced rearwards towards the rear securing device if, for example, a passing customer happens to knock against the accessory or the front securing device. At the same time, the system according to the invention allows very simple intentional release of the engagement between the rear engagement member of the accessory and the rear securing device by deliberately releasing the front engagement member from the front securing device and thereafter simply lifting the front end of the accessory and guiding the accessory somewhat in the rearward direction. After this, the accessory can be released and/or displaced easily, and without the need to reach a hand into the rear end of the accessory, into a new position in which it can be refixed by lowering the front end of the accessory and bringing the front engagement member into engagement with the front securing device .

In the system according to the invention, the profiled element of the rear securing device can have a cross- sectional profile, with a lower base plate, a first arm projecting upwards from the base plate, and a second arm, with a rear end, projecting rearwards from the first arm. The rear engagement member expediently comprises a forward-projecting third arm with a front end, which third arm is configured to, in mounted position, be received between the base plate and the second arm of the profiled element of the rear securing device. The first stop face is then expediently constituted by a forward-facing surface of the first arm and the second stop face is expediently constituted by a rearward-facing surface disposed in front of the front end of the third arm, the distance between the second stop face and the front end of the third arm then expediently being less than the distance between the first stop face and the rear end of the second arm.

This ensures that the rear engagement member is in engagement with the rear securing device even if the accessory has been displaced rearwards relative to the rear securing device to the point where the two stop faces have come into contact with each other. At the same time, intentional disengagement of the rear engagement member from the rear securing device is made possible.

The securing device and the rear engagement member are expediently configured to allow rotation of the shelf accessory about an axis which is parallel with the longitudinal direction of the profiled element when the rear engagement member is in engagement with the rear securing device. This enables the rear engagement member to be easily disengaged from the rear securing device by deliberately lifting the front end of the accessory by a predetermined distance from the top side of the shelf and thereafter displacing the accessory somewhat in the rearward direction. In this way, the rear end of the accessory can be released easily, and in an intuitively easily comprehensible manner, for removal or repositioning, for example by displacement of the accessory along the longitudinal direction of the shelf .

Either the rear securing device or the rear engagement member expediently comprises a friction member, which is made of an elastic material . The friction member allows, through frictional interaction with a corresponding member of the other of the rear securing device and the rear engagement member, a friction force between them which is sufficiently large to prevent displacement of the rear end of the accessory along the profiled rail under normal use. Moreover, the elastic friction member exerts a clamping force which ensures an engagement without unwanted play.

The friction member is expediently disposed on the rear securing device and is constituted by a friction rail which extends along the profiled element and projects upwards from the base plate in the direction of the second arm. The friction member will hence exert an upwardly directed force upon the third arm of the engagement member. The engagement of the third arm is thereby facilitated. The upwardly directed force also helps to keep the rear engagement member at a certain distance from the top side of the shelf and of the base plate, which facilitates rotation of the shelf accessory about the axis lying parallel with the longitudinal direction of the profiled element.

The front securing device expediently comprises a magnet for fixing the front securing device to a shelf comprising a magnetic material. The removal of the front securing device, for example in cleaning or reorganization of the shelf, is thereby facilitated. For the same reason, the rear securing device can also comprise a magnet for fixing to the shelf .

In the case of sloping shelves, for example, it may however be desirable for the rear securing device to be fixed extra firmly to the shelf in order further to deter the constituent parts of the system from coming loose from the shelf and sliding off it. In such applications, it may therefore be expedient for the rear securing device to comprise a double-sided adhesive tape with which the rear securing device can firmly be fixed to the shelf.

The invention also relates to a shelf according to the following Patent Claim 9.

Further objects and advantages of the invention emerge from the following detailed description, as well as from the patent claims .

Brief description of the figures An illustrative embodiment of the invention is described below with reference to the appended figures, whereof :

Figs . Ia and Ib are perspective views from different directions of a system according to one embodiment of the invention,

Fig. 2 is a perspective view obliquely from the rear on an enlarged scale and shows certain of the constituent parts of the system shown in Figs. Ia and Ib,

Fig. 3 is a lateral plan view of the parts shown in Fig. 2, Figs. 4a-c are lateral plan views of the system shown in Figs . Ia and Ib and show the system when the shelf accessory has assumed various positions in relation to the front and the rear securing device.

Detailed description of embodiments

In the following description, directional and positional terms, such as up, down, forwards, rearwards, over, below, in front of, behind, upper, lower, front and rear, are used. These terms relate to directions and positions of a horizontal shelf or components when they are fixed to such a shelf. By the front edge of a shelf is here meant that edge of the shelf which is facing towards a person during normal use of the shelf. The terms are used to lend increased clarity to this description and should not be regarded as limiting for the scope of protection.

In Figures Ia and Ib, a system according to one embodiment of the invention is shown. The system comprises a shelf accessory 10, which in the shown example is constituted by a shelf divider. It will be appreciated, however, that the accessories can also be constituted by, for example, feed devices, trays or other accessories which should be fixed to both their front and their rear ends .

The system also comprises a front securing device 20 and a rear securing device 30. The front 20 and rear 30 securing devices are configured for fixing to a shop shelf (not shown) . The top side of the shelf defines in customary fashion the shelf plane, which in the shown example is horizontal. The invention is not limited to horizontal shelves, however, but can advantageously also be used with shelves whose shelf plane has an angle to the horizontal plane. The front securing device 20 is constituted by an extruded or injection-moulded elongated profiled element of substantially uniform cross section along the whole of its length. The front securing device 20 comprises a bottom plate 21 and an upwardly projecting rail 22 of T-shaped cross section. The front securing device 20 also comprises a thin ribbon-shaped or plate- shaped magnet (not shown) , which is fixed to that side of the bottom plate which faces away from the rail 22. The front securing device can thus be releasably fixed to a shelf which is made of or which comprises a magnetic material, such as steel.

The shelf accessory 10 has on its front end a front engagement member 11, which is releasably snap-fastened around the T-shaped rail 22.

The rear securing device 30 is constituted by an extruded or injection-moulded profiled element of substantially uniform cross section over the whole of its length. The cross section of the rear securing device has a bottom plate 31, a first arm 32 projecting upwards from the bottom plate 31, and a second arm 33 projecting rearwards from those ends of the first arm 32 which are distal to the bottom plate. The first arm 32 has, on an end portion distal to the bottom plate, a forward-facing first stop face 32a. The second arm 33 has a free rear end 33a. A friction member in the form of an elastic friction rail 34 projecting upwards from the bottom plate 31 is arranged essentially below the rear end 33a of the second arm. The bottom plate 31, the first 32 and the second 33 arm are made of PVC, whilst the friction rail 34 is made of softened PVC. The rear securing device 30 is expediently produced by co-extrusion of these two materials, which gives a simple and cheap production of the rear securing device. A thin, ribbon-shaped permanent magnet (not shown) is fixed to the bottom side, facing away from the first arm 32, of the bottom plate 31. In the illustrative embodiment, both the front and the rear securing devices comprise an elongated, ribbon-shaped magnet, which extends substantially along the full length of the respective profiled element. It is also possible, however, for each profiled element to be provided on its bottom side with a plurality of magnets distributed along the length of the profiled element.

The shelf accessory 10 further comprises a rear engagement member 40. The rear engagement member has a continuous recess 41 disposed close to the rear, lower corner of the shelf accessory. The recess 41 is delimited in the rearward direction by a downward- jutting portion 42. A third arm 43 projects in the forward direction from the lower end of the downward- jutting portion 42. The third arm has a front free end 44. The recess 41 is further delimited by a first, rear edge portion 45 of the shelf accessory 10, which slopes forwards and upwards from the downward-jutting portion 42, and by a second front edge portion 46 of the shelf accessory. The second edge portion 46 is disposed in front of the first edge portion 45 and has a horizontal part 46a and a part 46b which is curved downwards in front of the horizontal part. A second, rearward-facing stop face 47 is disposed between the first 45 and second 46 edge portion and extends substantially vertically between these edge portions.

As can most clearly be seen from Fig. 3, the first stop face 32a of the rear securing device 30 is arranged at a certain distance A from the rear end 33a of the second arm 33. The second stop face 47 of the rear engagement member 40 of the shelf accessory 10 is arranged at a certain distance B from the front end 44 of the third arm 43. The distance B is less than the distance A. With reference to Figs. 4a-c, the use of the system is described below. The front securing device 20 is fixed to the shelf, which is made of steel, by quite simply placing the securing device on top of the shelf, on or close to the front edge of the shelf and substantially parallel therewith. The front securing device 20 is hence held in place by the magnetic force. Correspondingly, the rear securing device 30 is fixed on or close to the rear edge of the shelf, substantially parallel with the front securing device 20. The two securing devices 20, 30 are fixed at a distance apart corresponding to the distance between the front 11 and rear 40 engagement member of the shelf accessory 10 to be fixed to the shelf.

When a shelf accessory is to be fixed to the shelf, it is brought in over the shelf, approximately to the position shown in Fig. 4a, so that the front 11 and rear 40 engagement members are placed approximately above the respective securing device 20, 30. After this, the rear end of the shelf accessory 10 is guided down towards the rear securing device 30, and the third arm 43 of the rear engagement member 40 is slipped in between the bottom plate 31 and the second arm 33 of the rear securing device 30 (see Fig. 4b) . The friction rail 34 is hereby elastically deformed, whereupon the friction rail 34 comes to exert an upwardly directed force which presses the third arm 43 upwards so that it comes to bear against the bottom side of the second arm 33 of the rear securing device 30. Once the rear engagement member 40 has thereby entered into engagement with the rear securing device 30, the front end of the shelf accessory is guided downwards until the front engagement member 11 has been snap-fastened around the upward-projecting rail 22 of the front securing device 20. As the front end of the accessory is bent down in this way, the second stop face 47 of the rear engagement member 40 will be guided down in front of the first stop face 32a of the rear securing device so that the two stop faces 32a, 46 mutually overlap in the vertical direction. If, in this mounted position, the shelf accessory or the front securing device suffers a knock or the like, it can happen that the front engagement member 11 disengages from the front securing device 20, or that the front securing device 20 is displaced along the shelf in the rearward direction. The shelf accessory 10 is then consequently at risk of displacement in the rearward direction. In the event of such accidental rearward displacement of the shelf accessory, the second stop face 47 of the rear engagement member 40 comes to bear against the first stop face 32a of the rear securing device 30. Further relative displacement of the shelf accessory in relation to the rear securing device 30 is thereby deterred. Since the distance B is less than the distance A (see Fig. 3) , the contact between the two stop faces will prevent the third arm 43 of the rear engagement member from disengaging from the rear securing device 30, between the second arm 33 and the bottom plate 31 and friction rail 34 respectively. In this way, the shelf accessory is thus simply and effectively prevented from accidentally coming loose from its engagement with the rear securing device, even if the shelf accessory comes loose from the front securing device or if the front securing device is displaced from its intended position on the shelf .

When the shelf accessory 10 is to be deliberately removed from the shelf, its front end is lifted upwards so that its front engagement member 11 comes loose from the projecting rail 22 of the front securing device 20. After this, the front end of the shelf accessory, as the shelf accessory is rotated about an axis lying parallel with the longitudinal direction of the securing device 30, is lifted, until the second stop face 47 is above and detaches from the first stop face 32a and the first arm 32 of the rear securing device. The shelf accessory can thereafter be guided rearwards, whereupon the third arm 43 of the rear engagement member is disengaged from the rear securing device. The shelf accessory 10 can then be removed or displaced along the shelf into a new desired position in which it can be refixed to the shelf by making the rear 40 and front 11 engagement members engage with the rear 30 and front 20 securing device respectively, as has been described above.

The invention should not be deemed to be limited to the above-described embodiments, but can be varied within the scope of the following patent claims. For example, the accessory, instead of being constituted by a shelf divider, can be constituted by any other shelf accessory whatsoever which shall be fixed to the shelf. The system according to the invention can also comprise a number of different types of accessories which are fixed to a shelf. The constituent parts of the system can be made, of course, of a host of different materials. Furthermore, the front and/or the rear securing device, instead of comprising magnets for fixing to a shelf of magnetic material, can comprise other fixing means, such as double-sided adhesive tape, screw or rivet joints. The securing devices can also be fixed to a shelf by means of glue. In the case of sloping shelves, it can be especially advantageous to fix the front securing device by means of one or more magnets, whilst the rear securing device is fixed to the shelf by means of double-sided adhesive tape. The firmer securement which is obtained with the double- sided adhesive tape deters the constituent parts of the system from sliding forwards and downwards along the sloping shelf under the influence of gravity. This is especially advantageous if the accessories or the front securing device comprise stop plates which are rested against by the goods placed on the shelf . In the shown embodiment, a friction member in the form of a friction rail is arranged projecting upwards from the base plate of the rear securing device. In certain applications, however, the friction member can be dispensed with. The shown friction rail can also be replaced with other friction members, for example a friction rail projecting downwards from the free end of the second arm. In another embodiment, the friction member is constituted by a friction rail which projects upwards from the free end of the first arm.

Claims

1. System for securing shelf accessories to a shelf, comprising - a front securing device (20) , which is configured for fixing to the front edge of a shelf,

- a rear securing device (30) comprising an elongated profiled element configured for fixing on top of a shelf substantially parallel with the longitudinal direction of the shelf, and a shelf accessory (10) having a front engagement member (11) configured for engagement with the front securing device, as well as a rear engagement member

(40) configured for engagement with the rear securing device, characterized in that the rear securing device (30) comprises a first stop face (32a) and the rear engagement member (40) comprises an arm (43) , arranged for engagement with the rear securing device, and a second stop face (47) , which first (32a) and second (47) stop faces are configured to, in mutual contact, prevent the rear engagement member (40) from being disengaged from the rear securing device (30) when the shelf accessory (10) is held substantially parallel with the top side of the shelf, and to allow the rear engagement member (40) to be released from the rear securing device (30) when the front end of the shelf accessory is lifted such that the shelf accessory has assumed an angle to the top side of the shelf.

2. System according to Claim 1, in which:

- the profiled element of the rear securing device (30) has a cross-sectional profile, with a lower base plate (31) , a first arm (32) projecting upwards from the base plate, and a second arm (33) , with a rear end (33a) , projecting rearwards from the first arm,

- the rear engagement member (40) comprises a forward- projecting third arm (43) with a front end (44) , which third arm (43) is configured to, in mounted position, be received between the base plate (31) and the second arm (33) of the profiled element of the rear securing device (30) , wherein the first stop face (32a) is constituted by a forward-facing surface of the first arm (32) and the second stop face (47) is constituted by a rearward-facing surface disposed in front of the front end (44) of the third arm, and wherein the distance (B) between the second stop face (47) and the front end (44) of the third arm is less than the distance (A) between the first stop face (32a) and the rear end (33a) of the second arm.

3- System according to Claims 1 or 2, in which the rear securing device (30) and the rear engagement member (40) are configured to allow rotation of the shelf accessory (10) about an axis which is substantially parallel with the longitudinal direction of the profiled element when the rear engagement member (40) is in engagement with the rear securing device (30) .

4. System according to any one of Claims 1-3, in which the rear securing device (30) or the rear engagement member (40) comprises a friction member, which is made of an elastic material.

5. System according to Claim 4 , in which the friction member is disposed on the rear securing device (30) and is constituted by a friction rail (34) which extends along the profiled element and projects upwards from the base plate (31) in the direction of the second arm (33) .

6. System according to any one of Claims 1-5, in which the front securing device (20) comprises a magnet for fixing the front securing device to a shelf comprising a magnetic material .

7. System according to any one of Claims 1-6, in which the rear securing device (30) comprises a magnet for fixing the rear securing device to a shelf comprising a magnetic material .

8. System according to any one of Claims 1-6, in which the rear securing device (30) comprises a double- sided adhesive tape for fixing the rear securing device to a shelf.

9. Shelf comprising a system according to any one of Claims 1-8.