WO1988006018A1

WO1988006018A1 - Bracket mounting

Info

Publication number: WO1988006018A1
Application number: PCT/SE1988/000048
Authority: WO
Inventors: Martin Rieman
Original assignee: Sparring Elfa Ab
Priority date: 1987-02-12
Filing date: 1988-02-10
Publication date: 1988-08-25
Also published as: FI893772A0; AU1340188A; SE8700570D0

Abstract

Bracket mounting system consisting of a mounting rail (11) with a number of single or parallel double slots (17) extending in the longitudinal direction of the rail and non-slotted intermediate spaces (19) located in between, as well as of brackets (12) with a curved hook (15) so as to be capable when inserted into slot (17) of rails (11) to be fastened to the rail in any required position, and with one or several supporting edges and/or lugs (26') arranged below hook (15) for supporting the bracket, and in which the upper side of the bracket is designed with a notch (21) acting as a pivot so as to co-operate during swivelling-in of fastening part (14) of the bracket into a slot (17) in rail (11), and in which on the one hand edge (21a) of notch (21) facing outward towards the room is curved and the lower rear edge (22) of the locking hook is curved, and in which the height of the fastening part of the bracket in conjunction with the curvatures of the outward facing edge (21a) of notch (21) and the lower rear edge are such that the bracket is, owing to three-point locking, i.e. 1) against the lower edge of a slot, 2) against the upper edge of a slot, 3) against some point on the front of the intermediate space above the slot or above the uppermost slot, constantly secured against inadvertent or intentional detachment also if the bracket is turned upward by a certain given angle.

Description

Bracket mounting

This invention relates generally to a bracket mounting system of the type consisting ot a rail appropriately mounted in a vertical position with a number of slots extending in the longitudinal direction of the rail and brackets designed with means so as to be able for them to be mounted on the rail in any position when insetted into the bracket slots,

Bracket mounting systems of this type are known, e.g. for use with all kinds ot shelf systems, whereby the rail is assembled to a wall or in special floor stands, and the brackets are used for placing upon them book shelves, trays, cabinets etc , loading the brackets in the downward direction, The rails can be designed with single slots or two or several slots arranged in parallel, henceforth referred to as double slots.

With the majority of known bracket mounting systems of this type, e.g, from FR-A-2.200. /3/, the brackets are designed with hooks facing downward and arranged to be inserted into the rail slots and lowered in the inserted position, so that the hooks come to rest against the rear of the nearest intermediate space between the slots located below the insertion slot. In order to achieve a satisfactory connection between the bracket hooks and the rails, the hook notches ot the brackets must be relatively deep, and as a rule the hook notches are so deep that a large part of the slot, possibly close to 30-50% remains open when the bracket has been inserted in the rail slots. This means that only 50-70% of the slot opening can be utilised and that both the rail and the bracket must accordingly be over dimensioned in order to achieve, the required strength.

Furthermore, the moment-absorbing lever with several known bracket mounting systems ot this type is rarely larger than the pitch between two slots, which results in designs requiring unnecessarily large amounts of material, e.g. inasmuch as the brackets are made relatively high so that the lower, pushing part which abuts the frout of the suspension rail is located at a considerable distance below the upper, pulling hook. This also results in each bracket extending over a height ot at least two slots located one above the other and in the fact that owing to the height of the brackets it is not possible to make use of the entire height between e.g. bookshelves. The Swedish patent 353,449 describes a bracket mounting system, in which the bracket makes use of a single slot and in which it is possible to utilise nearly the entire height between e.g. shelt planes and in which the tastening element of the bracket is designed as a backward-upwards curving bent leg, which is so arranged as to be inserted, subject to a vertical backward-upward directed turning motion, into a slot in the supporting rail, and in which the outer end ot the bent leg abuts the inside of an intermediate space between the two openings or perforations located immediately above the bracket insertion opening.

The arrangement is advantageous inasmuch as it utilises the entire slot opening or pertoration and in that the tastening elements of the bracket are in the main located entirely inside the supporting rail, and in that it brings about a better fixed end moment than the systems with downward-directed hooks by way of tastening device, described above.

The arrangement described has however certain faults and disadvantages. Owing to the relatively great length ot the backward-upward bent tastening leg, the supporting bar must be deeper than is usually necessary with bracket mounting systems of this type, and this causes the system to be costly, the shelt plane etc. to project unnecessarily far from the mounting position, e.g. the wall, and in certain cases it may be necessary to desist from the system for reasons of space, The backward-upward bent leg ot the hook in the tastening rail is tapered, as a result of which it fills the entire slot opening only when it is fully inserted, so that there is a risk of loosening it the bracket is pushed upward. Certainly it can be designed with a securing notch in its lower edge, by means of which the bracket, when it is fully mounted, is locked firmly to the lower edgs of the slot opening, but it one should happen to knock against the bracket in the outward-upward direction there is however a risk of this securing device being detached, and the entire bracket can then drop by itselt from the slot, sliding along the downward rear edge.

GB-A-781,778 shows another type of bracket mounting system, where the tastening notches ot the brackets are turned with their tastening slots directed upward and are designed with curved rear edges so that the hooks fill the slots in the supporting rail more or less completely. In order to enable the swivelling ot the tastening hook into the notch, the tront of the tastening notch is v-shaped, as a result of which the bracket can easily be tipped upward, whereby the tastening hook partly loses contact with the slot and tha hook can easily drop out of the slot The present invention is therefore based on the problem of bringing about a bracket mounting system

- in which use is made substantially of the entire slot opening in a mounting rail for suspending the bracket,

- in which a large fixed end moment is achieved,

- in which it is possible to make use of a single slot opening or of a parallel pair of slot openings,

- in which use can be made of conventional support rails or also shallower rails than have hitherto been in common use,

- in which it is possible to reduce the thickness of the material of the support rail and/or bracket and/or to reduce the length of the slot openings and thus to increase the strength of the support rail,

- in which one achieves a light, stable and strong universal section intended for single- or double-slot brackets or both,

- in which one achieves suspension without play of the brackets in the support rail,

- in which one can make use of one or several supporting lugs in order to increase the fixed-end moment,

- and which above all is characterised in that the bracket is designed in such a way as to be secured against sliding out of the slot opening also if it is inadvertently acted upon in the upward direction at inclinations up to an angle of 30º in respect to the horizontal plane or also more.

This is achieved by the hooking element in the bracket consisting of an inward-upward directed hook, the surface of which turned outward towards the room is so arranged as to abut the nearest intermediate space between the slots located above the insertion slot, and a downward directed perpendicular flat supporting edge so arranged as to abut the front of the nearest intermediate space located below the insertion slot, and in that the upper part of the bracket, which is directed towards the room, is designed so as to enable swivelling in, without play, of the locking hook into the mounting rail with the lower edge of the fastening notch by way of a pivot, and in that the lower edge of the locking hook which is turned towards the wall is curved in such a way that the bracket is secured against inadvertent or intentional removal from the insertion slot also if the bracket is turned upward by a certain angle, especially in that the bracket is designed so that at all inclinations up to the said angle it is in contact with the suspension rail at not less than three different points, i. e. through the curved rear edge, a curved rear edge of the fastening notch and at least some part of the lower edge of the fastening notch.

Further characteristics and advantages of the invention will appear from the following detailed description in which reference is made to the attached drawings showing a number of different embodiments of the invention. It is understood that the embodiments of the invention shown in the drawings and described below only constitute illustrative examples and that many different variations and modifications can occur within the scope of the concluding claims.

In the drawings Figure 1 shows, in fragmentary manner, a bracket mounting system according to the invention. Figure 2 shows in a more explicit fashion how the arrangement in Figure 1 functions. Figure 3 shows in a sequence how a bracket is mounted with a one slot system according to the invention, and Figure 4 shows in corresponding manner the mounting of a bracket in a two slot system , Figures 5, 6 and 7 show a manner of bracing brackets with the system according to the invention, and Figures 8a-c show certain different possibilities of securing the bracket in a rail. Figure 9 shows a method of utilising two or several brackets according to the invention with a view to stabilisation. Figure 10 shows a method of using a bracket as a book support or similar device, and Figure 11 indicates a possibility of using the bracket mounting system for the construction of staircases etc. Figures 12 and 13 show an alternative design of the bracket mounting system used for the construction of stands and racks.

Figure 1 shows in fragmentary manner a first embodiment of a bracket mounting system according to the invention consisting of a mounting rail 11 of in the main known type, in which a bracket 12 is arranged so as to be capable of being suspended.

The mounting bar 11 can, thanks to the special design of the bracket, be made shallower and of thinner section material than used to be the rule previously. It is provided, in conventional manner, with rectangular slots extending in the longitudinal direction, in one or two rows, so-called single slots or double slots respectively. The length of the slot can be adapted as required and can be calculated with regard to the bracket which is to be suspended in the rail, with a view to bringing about a construction of bars and brackets of, as far as possible, uniform strength. Bracket 12 consists of a bearing part 12 and a lastening part or suspension part 14. The bearing part is intended to support a shelf, a cabinet or other units, and it is constructed in known manner. Fastening part 14 forms a hook 15 directed upward and i nward towards the wall, Its thickness being the same or nearly the same as the width of slots 17 and the height ot its base part 16 adjoining the bearing part being substantially the same as that ot slots 17. As a result, hook 14 makes use, in the mounted state, of the entire slot area and at possible breaking points it has such an amount of material that sturdy mounting is achieved also in cases in which only a single slot is used tor suspending the bracket. The illustrated mounting notch 21 in the upper part of hook 14 has a straight edge 18 intended to rest against the reverse side of intermediate space 19 located immediately above insertion slot 17, and, in corresponding manner, the fastening part has in the downward direction a straight edge 20 arranged lo rest against the front of the intermediate space situated immediately below insertion slot 17. The edges 18 and 20 are parallel to one another and located in planes, the mutual disf nice of which corresponds to the thickness of the mounting rail material in intermediate space 19. In case the height of the bracket and of the hook is the same, the hook can be formed by cutting in mounting notch 21 from the upper edge of the bracket.

In order to enable insertion of hook 15 into the slot 17 while the rear edge of the hook constitutes a kind ot gear tooth-type hinge part, the rear edge 21a of slot 21 facing outward from the wall is bent in a curve upward-backward in such a way that some part of said edge 21a always rests against the front of the intermediate space located immediately above during all stages ot the insertion ot the bracket into slot 17, or removal from the slot. Bracket 12 is inserted into slot 17 by a swivelling motion of the bracket with the bearing part moving in a downward-inward curve, i. e, with hook 14 swivelling in an inward-upward curve and with base 21b of notch 21 acting as a pivot and with some part of the rear edge 21a of the notch in constant contact with the front of intermediate space 19 located directly above. Notch 21 has at. its bottom 21b a width corresponding to the thickness ot the material 19 between the slots. Depending on the required function, the part of bearing part 13 prejecting above bottom 21b of notch 21 can be higher or lower than the height of hook 14. the lower rear edge 22 of hook 14, i. e, The edge facing inward towards the wall, is also curved, partly in order to enable swivelling in of the hook 14 with notch 19 by way of pivot, partly also in order to for m a surface which during the entire swivelling-in motion rests in the form of a tangent against edge 23 facing outward towards the room at the bottom of slot 17.

An important function of the arrangement consists in the fact that during the entire process of insertion into a slot and removal from a slot, respectively, the bracket has constantly three-point contact with the supporting rail, i. e, 1) through the curved lower edge of the hook against bottom 23 of slot 17, 2) through bottom 21b against a part of upper edge 24 of the slot and 3) through the curved rear edge 21a of the notch against any part of the front located above intermediate space 19 between the slots. By this means any risk of the bracket sliding by itself out of the slot is entirely eliminated. In the same way as rear edge 21a of the upper notch 21, the curved edge 22 is appropriately made so long that the bracket can be turned in the vertical plane by an angle of not less than 30º while remaining secured against an inadvertent drop from the slot.

Figure 1 illustrates a number of radii and how the centre of these radii is displaced so that during the entire swivelling-in motion they pass through the upper rear edge 24 of slot 17, which during the entire swivelling-in motion constitutes the swivel centre of the bracket. As a result, the bracket has throughout this motion constantly three-point contact with the rail, and as shown by the bracket positions indicated by means of dashed lines in Figure 2 and in the Figure sequences in Figures 3 and 4, the curved lower and rear edge 22 slides during insertion and removal of the bracket over the lower front edge 23 of the slot. At the same time the straight rear edge 18 of the hook slides towards the upper rear edge 24 of the slot, and the curved front edge 21a of slot 21 always rests against some point on the front of the upper of the two co-operating intermediate spaces 19. In the fully mounted position, the bracket is held in position mainly by contact of the hook with the bottom edge 23 and the top edge 24 of slot 17, contact of the upper edge 13 with the upper intermediate space 19 and contact of the lower edge 20 with the lower intermediate space. Appropriately, the bracket is not only so designed as to fill the entire height of the slot but so that it is also clamped between the lower and the upper edges 23, 24 of the slot.

It shall be noted that the brackets can, of course, be designed with the upper edge deviating from the horizontal plane, e.g. for use with planes inclined downward or upward such as bookshelves, shoe shelves and other objects as shown in accordance with Figure 11, where the supporting rails are used by way of stringers for a staircase and the brackets as mounting for stairs. In such cases the rails can appropriately be designed with outward facing reverse sides, enabling the rails to be screwed fast in a wall unit or a staircase unit etc.

Figures 3 and 4 show in the form of picture sequences from above downward what happens during insertion of the bracket into its rail, i.e. in Figure 3 when using only one slot, and in Figure 4 when using two cooperating slots, whereby the bracket is designed in part with a retaining hook 25 and in part also with a supporting lug 26, or if required several supporting lugs, which when the bracket is mounted entirely fill the slot and brace the bracket laterally, and where the supporting lug is also used in order to clamp the bracket in the vertical direction in the two cooperating slots as shown with reference to Figure 4b. Figure 4b shows that hook 25 with the bottom of notch 21 is pressed upward against the upper edge of the upper slot 17', whereas supporting lug 26 is pressed against the lower edge of the lower of the co-operating slots 17". In this case the hook need not necessarily be clamped against both the upper edge and the lower edge of the upper slot 17', what is essential being that the bracket as a whole is effectively clamped in the slots, which in this case can therefore be brought about by co-operation between hook 25 and supporting lug 26.

Figures 5 and 6 show a method of in addition laterally bracing the bracket in its rail. To this end rail 27 is designed with inward folded rear flanges 28, and hook 29 as well as possibly also supporting lug 30 are in the same way upset towards the side so as to press to some extent against flanges 28.

In the same way the hook and/or supporting lug can be upset somewhat to the side at a point 31 corresponding to the inner edge of the slot, whereby this upset point constitutes a weak lock preventing inadvertent detachment of the bracket from the rail.

Figure 8 shows alternative methods of securing the bracket in the mounted position. Figure 8a shows how the lower edge 22' is formed with a flanged outward locking hook 32 which during mounting ot the bracket snaps in on the reverse side of the bar and locks the bracket in this position. Figure 8b shows how the supporting lug 26' is in corresponding manner designed with a flanged outward locking hook 33a. If required, it can also be designed with a locking hook 33b at the top edge, and it is also possible to arrange a locking hook at each edge, preferably flanged outward each in its direction.

Figure 9 shows three different alternative methods A, B, C, for using two or several brackets of the type described above in order to increase the fixed end moment. In this connection use is made of two id.entical brackets, i.e. an upper bracket 34 and a lower bracket 35. In case 9A both brackets 34a and 35a face in the same direction, i.e. they are upward facing, and each of them is inserted in its own slot, either slots next to one another or slots separated by an intermediate slot, depending on which fixed end moment is required. The two brackets 34a and 35a are joined at a point 36a and constitute jointly a co-operating system. In case 9B the upper bracket 34b faces downward and the bracket 35b faces upward and they are joined at point 36b. Figure 9 illustrates how with the same bracket system the upper bracket 34c can be arranged in an inclined manner, which is possible thanks to the above mentioned securing device to prevent dropping out within an angle of about 30º.

Figure 10 shows a method for using one and the same type of bracket mounting system partly for mounting a double bracket 37, to which a shelf 38 is applied, and partly for mounting a book support 39. In this case the bracket 37 is provided at its top with two slots 40, into which fastening clips 41 with downward facing legs can be snapped so as to secure them, and which are used in order to glue or tape 3 shelf plate 38 into position. The book support 39 is formed as a horizontal U-shaped bow, the upper leg of which has a hook 15 as described above, the lower leg being designed with a single hook 42 for attachment to 3 slot 17 in rail 11. At the lower edge of the lower leg are slots for attachment of clips 41 of the same type as mentioned above, which enable the book support to be attached to the upper side of shelf 38 with the aid e.g. of double-adhesive tape.

Figure 11 shows, as mentioned above, a method for using the bracket mounting system for the construction of a staircase, In this case suspension rail 43 in accordance with Figure 11A is designed with outward facing flanges 43a, b, on at least one side of the outward bent suspension part 43c, which is provided with slots 17. The flanges 433 and b are screwed firmly to a wall or a side piece. As shown in Figure 11B the bracket 44 is designed in such a way that with its upper side horizontal it can be mounted in rails forming an angle of e.g. 30º in respect of the horizontal plane. The bracket is locked in the mounted position with the aid of a locking hook 33. The bracket is appropriately designed with an inward bent flange 46 at the lower edge, to which a staircase step 47 can be assembled.

Figures 12A and B and 13A, B and C indicate a possibility of using the bracket mounting system according to the invention for the construction of all kinds of different stands, racks etc. In this case their brackets are designed as frame elements 48 provided at both ends with hooks 15 and supporting lugs 26 with locking hooks 33 tor attachment in slots provided in legs or uprights 49, which in this case constitute angle rails 50 with two slots 17 arranged at an angle in respect of one another, in the illustrated case an angle of 90° in respect of one another, and with two support sides 51.

Figure 12A, B shows an alternative with upward facing hooks and supporting lugs, while Figure 13A, B, C shows the opposite condition, where the hooks and supporting lugs are directed downward. In all other respects the constructions entirely correspond with one another.

Mounting of the system is effected in an extremely simple manner as illustrated in Figures 12B and 13B as well as 13C respectively, Figure 12B shows how the legs or uprights 49 are swivelled from above and downwards until they connect with the hooks 15 and supporting lugs 26, in accordance with the arrows 102 in Figure 12B, Supporting lugs 33 secure frame elements 48 and legs 49 in relation to one another. If two pairs of legs are assembled each to two separate units consisting of two legs and a frame element, the pairs of legs are joined in corresponding manner with the aid of frame elements so as to produce a rack or a stand, e.g. tor a table plate, a chair, a bed or for any other purpose whatsoever.

In the case according to Figure 13A, B, C the legs are assembled from inside and outward in accordance with arrows 1-2 in Figure 13C. Figure 13 also shows in partial Figure 13C how the stand or rack can be made with to some extent outward facing legs by designing the frame elements in .a corresponding manner, In this case the leg structure becomes self-locking.

Within the scope of the invention it is possible to design the legs or uprights with other angles than the angle of 90° shown and to design the legs in such a way as to enable two or several frame elements to be attached to the same leg, whereby if becomes possible to build up stands or racks of any desired length or width in sections joined with one another. Ref erence numbers

Figures 1-4:

11 supporting rail Figure 8:

12 bracket

13 supporting part 32 locking hook

13a upper edge (13) 33 locking hook (a, b)

14 fastening part

15 mounting hook Figure 9:

16 base (15)

17 slots (17', 17") 34 upper bracket (a, b, c)

18 edge (14) 35 lower bracket (a, b, c)

19 intermediate space 36 assembly point

20 edge (13)

21 mounting notch Figure 10:

21a rear edge (21)

21b bottom edge (21) 37 double bracket

22 curved edge 38 shelf

23 edge (17) 39 book support

24 edge (17) 40 slot

25 hook (25') 41 clip

25 supporting lug (26' ) 42 hook

Figures 5-7: Figure 11:

27 rail 43 rail (a, b flange, c part)

28 flange 44 bracket

29 hook 46 flange

30 Iug 47 stair case step

31 (point)

Figures 12-13:

43 frame element

49 leg

50 angle rail

51 support side

Claims

1. Bracket mounting system consisting of an appropriately vertically mounted or erected rail (11) with a number of single or parallel double slots (17) extending in the longitudinal direction of the rail and non- slotted intermediate spaces (19) located between them, as well as of brackets (12) designed with a supporting part (13) for an object supported by the brackets and a tastening part (14) with a curved hook (15; 25; 29;) capable ot being secured in the course of insertion into slot (17) of rails (11) in any required position in the rail, and with the edge (10) of which lacing outward towards supporting part (13) arranged to rest against the intermediate space (19) between slot

immediately above or below the insertion slot, and with one or several downward or upward facing support edges (20 ) arranged to rest against the front of the intermediate space immediately below the insertion slot (17), and with one or several support edges (20) arranged below the tastening part and/or supporting lugs (26; 30) for supporting the bracket, characterised

In that a notch (21) acting as a pivot is provided at the top of the bracket between the supporting part (13) and the fastening part (14), in order to co-operate with the swivelling-in motion of tastening part (14) of the bracket into a slot (17) in rail (11), in that edge (21a) of notch (21) lacing outward fowards the room is curved, in that the lower rear edge (22) of the locking hook is curved, and in that the height of the fastening part in conjunction with the curvatures of the outward lacing edge (21a) of notch (21) and the lower rear edge are such that the bracket is, thanks to three-point locking, i,e, 1) against the lower edge of a slot - 2) against the upper edge of a slot - 3) against some point on the front of the intermediate space above the slot or the topmost slot, at all times secured against inadvertent or intentional detachment, also it the bracket is turned upward by a certain given angle.

2. Bracket system according to claim 1, characterised in that the supporting part (13) has approximately the same height as the hook (15), whereby notch (21) forms a boundary between supporting part (13) and fastening part (14).

3. Bracket system according to claim 1 or 2, characterised in that the bottom of notch (21) has a width which is in the main identical with the thickness of intermediate space (19) immediately above, and in that the curved rear edge at its lowest part is tangential to the front of said intermediate space (19), and in that the rear upper edge (24) of insertion slot (17) is the swivel centre during swivelling-in and out respectively of the bracket.

4. Bracket system according to claim 1, characterised in that the lower rear edge (22) of hook (15) is curved in such a way that it forms in all swivel positions during insertion and removal of the bracket into and from slots (17), respectively, a tangent to the lower, front edge (23) of the insertion slot and is clamped between the upper and lower edges of slot (17).

5. Bracket system according to claim 4, characterised in that the curved lower rear edge (22) of hook (15) is so long as to enable swivelling outward and upward of the hook at an angle of at least 30º while maintaining the security of the bracket against inadvertent sliding out from Insertion slot (17).

6. Bracket system according to claim 1, characterised in that three-point contact of the tastening hook with the rail takes place at the lower front edge (23) of the slot, the upper rear edge (24) of the slot and some point at the front of intermediate space (19) directly above with the curved edge facing outward from the rail of notch (21) (Figure 3).

7. Bracket system according to claim 1, characterised in that the bracket is designed on the one hand with a hook (29) for engaging a first insertion slot (17') , and on the other hand also with one or several supporting lugs (26) for engaging another insertion slot (17"), and whereby the bracket is so designed that the lower edge (21b) ot notch (21) of the fastening hook is clamped against the upper edge of the first slot (17') and the supporting lug is clamped by its lower edge against the lower edge of the other slot (17") (Figure 4).

8. Bracket system according to any of the preceding claims, characterised in that the fastening rail (27) is designed with inward folded rear edges (28) and in that tastening hook (29) is upset at its part located next to the two, so as accordingly to clamp the rail flanges (28), and in that also supporting lug (30) is upset to some extent at a point (31) so as to clamp and brace the bracket within the insertion slot (Figures 5-7).

9. Bracket system according to any of the preceding claims, characterised in that tastening hook (15') is designed at its curved lower rear edge (22) or supporting lug (26') is designed at its lower edge and/or at its upper edge with outward bent locking lugs (32 or 33a, 33b, respectively) which, when the bracket is mounted, secure the latter in locked position within the supporting rail (Figure 8).

10. Bracket system according to any of the preceding claims, characterised in that it comprises two co-operating brackets (34, 35), which act together so as to increase the moment absorption capacity of the system and which with their mounting hooks are inserted into different slots and which are joined at a point (36) located at a distance from the mounting rail and with the upper ot the two brackets (.34) arranged horizontally or at any other angle whatsoever (Figure 9).

11. Bracket system according to any of the preceding claims, characterised in that it forms two units, i.e, a first bracket (37) for mounting a shelt (38) or a similar device and securing the shelt to the bracket e.g. by means of self-adhesive clips (41), and another bracket (39) which forms a vertical support, e.g. a book support, and which is mounted in slot of rail (11) above the shelt (38), and whereby this other bracket (38) is secured to the upper surface of shelf (38) by means of glue or double-adhesive tape with the aid of clips (41), which are secured, e.g. snap-locked, to the lower edge ot book support bracket (39), (Figure 10).

12. Bracket system according to any of the preceding claims, characterised in that the tastening rails (43) are designed with outward folded flanges (43a, b) by means of which they can be mounted to a wall or similar unit at an acute angle in relation to the horizontal plane, and in that the brackets are so designed as to be capable ot being mounted on their fastening rails (43) with the upper or lower edges (46) horizontal, whereby the system can e.g. be used for the construction ot staircases etc. (Figure 11).

13. Bracket system according to any of the preceding claims, characterised in that the supporting fails (50) are angular and provided with two or several grooves of mounting slot

arranged in rows at an angle to one another, so that two or several brackets can be mounted at an angle to one another in one and the same tastening rail (Figures 12-13).

14. Bracket system according to claim 13, characterised in that the brackets constitute frame elements (48) designed at both ends with mounting hooks (15) and supporting lugs (26) so as to be capable of being joined each to its own supporting rail (50) designed as a leg or upright, and whereby a self-supporting stand- or rack-structure with three or several vertically arranged legs (50) facing either inward or outward can be constructed (Figures 12-13).