EP1820423A1 - Fitting for height-adjustable slats in a slatted bedstead - Google Patents

Abstract

The fitting has a base unit (50), which is fastened to a longitudinal spar (40) of a slatted frame. A support unit (60), which is vertically adjustable, is directed to the base unit and is connected with a bearing unit for receiving an end of the slat (30). A locking bolt (70) is inserted into the support unit through the base unit from outside, in order to lock the support unit in vertical direction in relation to the base unit. An opening or recess is provided at the base unit for receiving the locking bolt.

Description

Technical area

The present invention relates to a fitting with the features of the preamble of claim 1 for height-adjustable mounting of an end of a slat on a frame longitudinal spar of a frame.

State of the art

From the prior art it is known to store the slats of a slatted frame individually or in pairs adjustable in height to allow an individual adaptation of the slatted frame to the body contour and sleeping habits of a user. Various mechanisms have already been proposed for this purpose. As an example among many is the DE-U 296 21 665 called. On a frame longitudinal spar a base plate is mounted. On the base plate, a support plate is arranged vertically displaceable, with which a slats receiving is connected for two battens ends. On the support plate a plurality of superposed, horizontal locking grooves are formed. In this engage locking lugs, which are connected via resilient locking arms with the base plate. A blocking slide is inserted between the base plate and the support plate so that a spring back of the locking arms is prevented and thus the locking lugs remain blocked in the locking grooves. In this way, a vertical displacement of the support plate is prevented. The blocking slide can be taken through a gap between two bar ends through and pull upwards to release the spring arms, thus allowing a displacement of the support plate and thus a height adjustment of the bar ends.

A disadvantage of this construction is that the blocking slide is poorly accessible between the ends of the battens, especially when a mattress is resting on the slatted base rests. In addition, the slider must be pulled upwards, ie against the underside of the mattress. This can be a difficult task, especially if the slider should be stuck after prolonged use. In addition, a highly elastic, unbreakable plastic is required for the production of the base plate so that the locking arms do not break with repeated height adjustment of the slats, especially because the locking arms are relatively filigree. This restricts the material selection in the production and makes the production more expensive.

Presentation of the invention

It is an object of the present invention to provide a fitting that allows easy height adjustment of the slats and is inexpensive to produce.

This object is achieved by a fitting with the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

• ein am Rahmenlängsholm befestigbares Basiselement;
• ein mit dem Ende der Latte verbindbares Tragelement, welches in einer im wesentlichen senkrecht zu einer Rahmenebene verlaufenden Führungsrichtung verschiebbar am Basiselement geführt ist; sowie
• einen Riegel, um das Tragelement (vorzugsweise in einer von mehreren vorbestimmten Positionen) bezüglich der Führungsrichtung gegenüber dem Basiselement zu verriegeln.

Der Beschlag zeichnet sich dadurch aus, dass der Riegel von der Rahmenaussenseite her in Richtung der Rahmeninnenseite in das Basiselement und das Tragelement einschiebbar ist. Vorzugsweise ist der Riegel dabei im wesentlichen parallel zur Rahmenebene einschiebbar.A fitting according to the invention thus comprises:

• a base member attachable to the frame longitudinal member;
• a support member connectable to the end of the slat, slidably guided on the base member in a guide direction substantially perpendicular to a frame plane; such as
• a latch to lock the support member (preferably in one of a plurality of predetermined positions) with respect to the guide direction opposite to the base member.

The fitting is characterized in that the bolt is inserted from the outside of the frame in the direction of the frame inside in the base member and the support member. Preferably, the bolt is inserted substantially parallel to the frame plane.

As a result, the bolt is easily accessible from the outside. He can for the purpose of Unlocking in a simple manner parallel to the longitudinal direction of the slats (ie horizontally) are pulled out of the support element and base element, even if a mattress rests on the grate. The fitting is also easy and inexpensive to manufacture.

The most important directions are defined as follows: The frame, with its longitudinal spars and crossbars, forms a frame plane. The longitudinal spars define a longitudinal direction, the transverse spars a transverse direction. For a rigid frame, the frame plane is usually horizontal. In the case of a frame with an adjustable head and / or foot part, the head part or foot part forms a local frame plane, which is possibly inclined with respect to the horizontal. The slats lie substantially in the frame plane, but may be curved or otherwise shaped with respect to this plane. "Bottom" and "top" refer to directions perpendicular to the frame plane. In addition, the frame defines a frame inside and a frame outside. "Substantially parallel to the frame plane" is a direction when it makes an angle with the frame plane that is significantly less than 45 °, preferably less than 20 °. Preferably, the direction in which the bolt can be inserted corresponds essentially to the transverse direction and thus also essentially to the direction of the batten.

The latch forms after insertion with both the base member and the support member with respect to the guide direction a positive connection. In a preferred embodiment, the bolt is inserted through the base member into the support member. For this purpose, at least one opening or recess is present in the base element, through which the bolt can be inserted into the support element. The support member is also an opening, recess or depression is provided to receive the latch and form a positive connection in the guide direction. In principle, a reverse arrangement of base member and support member is conceivable, so that the bolt is inserted through the support member into the base member.

In order to ensure a simple height adjustment, a plurality of along the guide direction spaced openings, recesses or depressions are preferably formed on the support member for receiving the bolt, in which the bolt can engage depending on the height adjustment. At least three openings, recesses or depressions are preferably arranged along the guide direction, preferably at least five openings. Since the extent of the openings in the guiding direction can be kept relatively small, a very fine gradation of the height adjustment, e.g. in five or more stages, possible. Instead of the support element, a plurality of openings or recesses may also be present on the base element.

In a specific embodiment of the fitting is formed as follows: The support member has a substantially flat support plate in which two parallel, extending in the guide direction rows of openings or recesses are formed, wherein the two rows have a predetermined distance in the longitudinal direction of the frame longitudinal spar , The base element comprises a base plate arranged parallel to the support plate, on which two guide sections are formed, which lie opposite one another in the longitudinal direction, guide the support plate and preferably embrace the support plate at its ends. This base plate comes to rest on the inside of the frame's longitudinal spar during assembly. There are two openings or recesses in the base plate, which have the same predetermined spacing along the longitudinal direction as the two rows of openings of the support plate. Two lugs are formed on the latch, wherein each lug can be pushed through in each case one opening or recess of the base plate into one of the openings of the support plate.

Preferably, limiting means are formed on the base element and / or on the support element in order to limit a displacement of the support element on the base element in the guide direction (ie downwards). The limiting means preferably comprise a projection on the support element, which in abuts a predetermined lowest sliding position of the support member on the base member, thus blocking further displacement.

The bolt is preferably arranged so that it rests on a mounting of the fitting on the frame longitudinal beam on this. Thus, the latch is guided on the one hand in the introduction of base element and support member from the frame longitudinal spar. On the other hand, it can not be accidentally pulled out or even broken off in this way.

For attachment of the base member to the frame longitudinal spar, a mounting flange extending to the frame outer side or at least two fastening pins are preferably formed on the base member, which are adapted to engage in a corresponding groove or in corresponding openings in an inner side of the frame longitudinal spar. At least one support pin is preferably formed on the support element in order to suspend a bearing element for receiving the end of the crossbar. But supporting element and bearing element can also be integrally formed.

Brief description of the drawings

Fig. 1

eine perspektivische Ansicht eines Lagerelements mit einem erfindungsgemässen Beschlag;

Fig. 2

eine Draufsicht des Lagerelements und des Beschlags der Fig. 1, angebracht an einem Längsholm eines Rahmens;

Fig. 3

eine Ansicht des Lagerelements der Fig. 1 mit Beschlag und Längsholm in einer ersten Stellung, in Richtung der Rahmenaussenseite betrachtet;

Fig. 4

eine Ansicht des Lagerelements der Fig. 1 mit Beschlag und Längsholm in einer zweiten Stellung, in Richtung der Rahmenaussenseite betrachtet;

Fig. 5

eine Ansicht des Lagerelements der Fig. 1 mit Beschlag und Längsholm in der ersten Stellung, in Richtung des Längsholms betrachtet;

Fig. 6

eine Ansicht des Lagerelements der Fig. 1 mit Beschlag und Rahmen in der zweiten Stellung, in Richtung des Längsholms betrachtet;

Fig. 7

eine perspektivische Ansicht eines erfindungsgemässen Beschlags;

Fig. 8

eine perspektivische Ansicht eines Basiselements;

Fig. 9

eine weitere perspektivische Ansicht des Basiselements der Fig. 8;

Fig. 10

eine Ansicht des Basiselements der Fig. 8 in Richtung der Rahmenaussenseite betrachtet;

Fig. 11

einen Querschnitt des Basiselements der Fig. 8 in der Ebene A-A;

Fig. 12

eine Draufsicht des Basiselements der Fig. 8;

Fig. 13

eine perspektivische Ansicht eines Tragelements;

Fig. 14

eine weitere perspektivische Ansicht des Tragelements der Fig. 13;

Fig. 15

eine Ansicht des Tragelements der Fig. 13 in Richtung der Rahmenaussenseite betrachtet;

Fig. 16

einen Querschnitt des Tragelements der Fig. 13 in der Ebene B-B;

Fig. 17

eine Draufsicht des Tragelements der Fig. 13;

Fig. 18

eine perspektivische Ansicht eines Riegels;

Fig. 19

eine Draufsicht des Riegels der Fig. 18;

Fig. 20

eine perspektivische Ansicht eines Härteschiebers; sowie

Fig. 21

eine weitere perspektivische Ansicht des Härteschiebers der Fig. 20.

Preferred embodiments of the invention will now be described with reference to the drawings, in which:

Fig. 1

a perspective view of a bearing element with a fitting according to the invention;

Fig. 2

a plan view of the bearing element and the fitting of Figure 1, attached to a longitudinal spar of a frame.

Fig. 3

a view of the bearing element of Figure 1 with fitting and longitudinal spar in a first position, viewed in the direction of the frame outer side.

Fig. 4

a view of the bearing element of Figure 1 with fitting and longitudinal spar in a second position, viewed in the direction of the frame outer side.

Fig. 5

a view of the bearing element of FIG. 1 with fitting and Longitudinal spar in the first position, viewed in the direction of the longitudinal spar;

Fig. 6

a view of the bearing element of Figure 1 with fitting and frame in the second position, viewed in the direction of the longitudinal spar.

Fig. 7

a perspective view of a fitting according to the invention;

Fig. 8

a perspective view of a base member;

Fig. 9

another perspective view of the base member of Fig. 8;

Fig. 10

considered a view of the base member of Figure 8 in the direction of the frame outside.

Fig. 11

a cross section of the base member of Figure 8 in the plane AA.

Fig. 12

a plan view of the base member of Fig. 8;

Fig. 13

a perspective view of a support member;

Fig. 14

another perspective view of the support member of FIG. 13;

Fig. 15

a view of the support member of Figure 13 viewed in the direction of the frame outside.

Fig. 16

a cross section of the support member of Figure 13 in the plane BB.

Fig. 17

a plan view of the support member of FIG. 13;

Fig. 18

a perspective view of a bolt;

Fig. 19

a plan view of the bolt of Fig. 18;

Fig. 20

a perspective view of a hardness slider; such as

Fig. 21

Another perspective view of the hardness slider of FIG. 20.

Detailed description of preferred embodiments

In Fig. 1, a bearing member 10 is shown attached to a fitting according to a preferred embodiment of the present invention is. 2 to 6, the bearing element and the fitting are shown in different views, wherein the fitting is attached to a longitudinal spar 40 of a frame and spring slats 30 are inserted into the bearing element.

The bearing element 10, a so-called twin bearing element, has two parallel cap-shaped lath receptacles 11, 11 '. In each of these lath recordings 11, 11 ', the end of a spring bar 30 and 30' can be inserted. The lath receptacles 11, 11 'are closed at their outwardly facing end, and this outer end is slightly pulled up to prevent a lying on the slats 30 and the slats recordings 11, 11', not graphically illustrated mattress on the side slipping. With each lath receptacle 11, 11 'is a hardness slider 20 and 20' slidably connected, which serves to adjust the rigidity (often referred to in practice as "hardness") of the bar 30 and 30 '. This can be fixed in various positions by a latching connection to the slats receiving 11 or 11 '. As best seen in Figs. 3 and 4, the bearing member 10 below each lath receptacle 11, 11 'on a sleeve-shaped spring portion 12 and 12' of elliptical cross section. The spring sections 12, 12 'are in turn supported by an elongated base section 13 disposed thereunder, which extends primarily along the longitudinal direction of the beam and connects the spring sections 12, 12'. There are several openings in the base section. The lateral openings 14, 14 ', 15 and 15' give the base portion a certain bending elasticity. The central, rectangular opening 16, however, serves to attach the bearing element to the fitting. The bearing elements are made of an elastomer such as synthetic rubber, preferably of a thermoplastic polyester elastomer such as Hytrel® (DuPont). Due to the elasticity of the selected material, in particular the elliptical spring sections 12, 12 ', but also the lateral areas of the base section 13 act as highly effective springs under load of the slats, allowing both a lowering and a tilting of the slats about the transverse direction.

The fitting is shown separately in FIG. It consists of three parts: a base member 50 which is attached to the longitudinal spar, a guided therein support member 60 on which the bearing element 10 is fitted, and a latch 70, the base member and sliding element locked together.

The base element is shown in more detail in FIGS. 8 to 12. It has a substantially rectangular, vertically arranged base plate 51, which runs parallel to the inside of the spar. To the frame outer side extends a mounting flange 52 which engages in a corresponding longitudinal groove in the spar 30. As can be seen from FIG. 11, the flange has on its underside a downwardly projecting region, which engages in the longitudinal groove of the spar behind a wall section of the spar and thus enables simple attachment of the base element into the spar. In addition, in the base plate 51 there is a horizontal bore 55 arranged centrally with respect to the longitudinal direction, through which the base element can additionally be secured on the spar. To the frame inside 51 vertically extending guide portions 53, 53 'are formed on the lateral edges of the base plate. As can be seen in particular from FIG. 12, each of these guide sections has a first wall section 56 or 56 'pointing to the inner side of the frame and a second wall section 57 or 57' adjoining it, running parallel to the base plate, which faces the second wall section of the respective other Guide member points. The first wall section 56 or 56 'and the second wall section 57 or 57' together define, together with the base plate 51, in each case a groove 58 or 58 ', in which the support element 60 is in a vertical guide direction (arrow 66 in FIG. 7). is displaceable. Near the upper edge of the base plate 51 there are two equally spaced elongated horizontal through-holes 54, 54 'arranged at the same height, viewed in the longitudinal direction of the spar, which serve to push the catch 70 from the outside. These openings come to rest after mounting of the base member 50 on the spar 40 just above the spar, so are over the spar away from accessible from the outside. The openings are above the guide portions 53, 53 ', that is, they are not obscured by these, if one looks in the frame plane from the inside to the base member 50. This makes it possible to push the bolt 70 so far that its ends come to rest above the guide sections 53, 53 '.

The support element 60 is shown in more detail in FIGS. 13 to 17. It comprises a rectangular support plate 61, on which a hollow, horizontally to the frame inside pointing support pin 62 is formed for attachment of the bearing element 10. With regard to the longitudinal direction of the spar of the support pin 62 is arranged centrally on the support plate 61. Between support plate 61 and support pin 62, a stop region 63 is formed, which forms a stop for the bearing element 10 with respect to a displacement to the outside with its parallel and spaced from the support plate 61 extending surfaces. On both sides of the support pin 62 in the support plate 61 each have a series of five superimposed, elongated horizontal openings 65, 65 'are formed, which have the same distance as the two openings 54, 54' of the base plate and in which the bolt 70 through these openings can be inserted therethrough. The openings of the support plate 51 are of the same size as those of the base plate 61, or they may be seen in the longitudinal direction of the frame longitudinal spar slightly shorter to allow easier engagement of the bolt 70, as explained in more detail below. At the upper edge of the support plate 61, a projection 64 pointing towards the outside of the frame is formed in order to limit downward displacement of the support element 60, in which the projection 64 abuts in an upper recess of the base plate 51 in a lowest position of the support element 60.

The bolt 70 is shown in more detail in FIGS. 18 and 19. It has a horizontally arranged in use, elongated, downwardly flat main portion 71. Towards the top, the main section has a thickening serving as a gripping aid, which is referred to below as a grip region 74. At the two ends of the main portion 71 are two in use for Frame interior facing, flat locking lugs 72, 72 'are formed, which serve to be inserted into the openings in the base member 50 and support member 60 and lock these elements against each other form-fitting manner. Parallel to each locking lugs 72, 72 'extends in each case a spring lug 73, 73', on which a locking lug 72 pointing to the respective other locking lug is formed. When inserting the bolt 70 in the openings of the support member due to the appropriately selected dimensions of these openings, the spring lugs are pressed by the respective locking cam a little towards the respective locking lug. When the latch is fully inserted, the spring tabs leave the support member straight and can spring back to their original position, so that the latching noses then engage behind the support plate 61. The bolt 70 can then be pulled out only against the force of the spring lugs with their (corresponding tapered) locking cams and is thus secured against accidental falling out. In this position, the ends of the locking lugs 72, 72 'and the spring lugs 73, 73' are above the guide portions 53, 53 'of the base member 50th

The interaction of the individual elements is particularly well from Figs. 5 and 6 clearly. The base member 50 is inserted into the longitudinal groove 41 of the longitudinal beam 40 formed from a hollow profile. Here, the retaining flange 52 engages in the longitudinal groove and engages behind with its lower portion a wall portion of the hollow profile, whereby the base member is prevented from falling out. In the base member 50, the support plate 61 of the support member 60 is slidably guided.

In Fig. 5 the support element is shown in a fully inserted, lowest position. In this position, the support member 60 is thereby prevented from further pushing down that the projection 64 rests on the base member. The locking lugs of the bolt 70 are pushed in this position through the two openings 54, 54 'of the base member and through the uppermost pair of openings 65, 65' in the support member. In the Fig. 6, however, the support member is shown in the maximum extended, uppermost position. In this position, the bolt engages through the two openings 54, 54 'of the base member in the bottom pair of openings 65, 65' in the support member.

Regardless of the position of the support member 60, the latch 70 is always in the same position relative to the base member 50 and the spar 40. The latch lies flat on top of the spar 40. In order to remove the latch and thus allow a displacement of the support member 60 in the base member 50, the latch is gripped from above at its handle portion 74 and pulled to the frame outer side. The bolt is always easily accessible regardless of the position of the support element, and an operation is easily possible even if a mattress rests on the slats.

The fitting is preferably made of an impact-resistant, rigid and dimensionally stable plastic, such as e.g. POM (polyoxymethylene), PE (polyethylene) or glass fiber reinforced plastic.

In the following, the construction of the frame shown here will be explained in more detail. The frame is constructed of similar hollow profiles, preferably of aluminum. In the longitudinal direction, an inner hollow profile 40 forms a longitudinal spar. In the middle region of the frame, this longitudinal spar is reinforced by a second, outer hollow profile 40 'extending in parallel. The outer longitudinal hollow profiles are connected by corresponding transverse hollow sections at their ends to a rigid frame. The inner hollow profiles may be rigidly connected to the outer hollow profiles, or they may e.g. be pivotable about the transverse direction in the region of the head and foot against the rigid frame.

The hollow profile has a substantially rectangular cross-section. In the inwardly facing outer wall of the hollow profile, a longitudinal slot is present, as well as in the downwardly facing outer wall. The height or width each longitudinal slot is smaller than the height or width of the cavity (the groove), the opening of which represents the longitudinal slot. Thus, insert parts can be anchored in one of the longitudinal slots in a simple manner, such as the base element of the present fitting in the lateral longitudinal slot or a bed base in the lower longitudinal slot. Both longitudinal slots extend over the entire length of the profile. Further details and applications are in the patent application CH 1751/03 of 14.10.2003 described.

With reference to FIGS. 20 and 21, the hardness shifters 20 will be described in more detail below. These have a ring-shaped main body 21 which is pushed over the spring bar. From the main body extends below the spring bar, a web 22 to the frame outer side, ie parallel to the axis of the opening of the main body. This web extends into an opening of the bearing element 10 below each pickup bar. At the end of the web 22, a spring lug 23 is formed, which engages in corresponding recesses in the corresponding opening of the bearing element 10 and thus fixes the hardness slide in one of several possible positions on the bearing element 10. The further the hardness slider 20 is pushed out of the bearing element 10 towards the inside of the frame, the less flexible is the spring bar held therein, and the more "hard" does it have for the user.

The spring slats 30 preferably have a cross-section, as shown in FIG. 3. From the substantially flat bar, three parallel to the longitudinal direction of the bar webs extend downwards. On top of a central flat groove is formed. Such spring battens can be easily made of plastic and in particular of fiber-reinforced composite materials, but can also be made of wood. Of course, the invention is not limited to such spring strips.

Of course, many variations of the inventive fitting are possible. Thus, the guidance of the support element on the base element can also be done differently, for example by the formation of a rail on the base element, which engages in a groove in the support member or vice versa, etc. Instead of passage openings for the passage of the slide may be present on the base member also laterally or above open recesses. On the support element as well as lateral recesses may be formed instead of the openings. It is also possible to provide inwardly projecting depressions in the manner of blind holes, which receive the end of the bolt. The base member may be mounted in other ways on the frame longitudinal spar, for example by pins, by screwing or by hanging over the top of the longitudinal spar, etc. The bearing element for the bar ends may have a different shape than the shape shown here. It can be designed to accommodate one, two or more slats. It may be attached to the support member in a different way than by sliding from the inside, eg by placing from above. Support element and bearing element can also be made in one piece. From this exemplary listing, it will be apparent that many other variations are possible without departing from the scope of the present invention.

LIST OF REFERENCE NUMBERS

A-A

Section plane and viewing direction for Fig. 11

B-B

Section plane and viewing direction for FIG. 16

10

bearing element

11, 11 '

Latte recording

12, 12 '

spring section

13

base section

20, 20 '

hardness slider

21

main body

22

web

23

spring tab

30, 30 '

bar

40, 40 '

longeron

41

longitudinal groove

50

base element

51

baseplate

52

retaining flange

53, 53 '

guide section

54, 54 '

locking opening

55

drilling

56, 56 '

first wall

57, 57 '

second wall

58, 58 '

groove

60

supporting member

61

support plate

62

supporting journal

63

stop area

64

head Start

65, 65 '

locking opening

66

guide direction

70

bars

71

main section

72, 72 '

locking tab

73, 73 '

spring tab

74

grip area

Claims (10)

Fitting for height-adjustable mounting of an end of at least one lath (30, 30 ') on a frame longitudinal spar (40) of a frame, wherein the fitting comprises: - A frame longitudinal member (40) attachable base member (50); - A with the end of the crossbar (30, 30 ') connectable support member (60) which is guided in a substantially perpendicular to the frame plane extending guide direction (66) slidably on the base member (50); a latch (70) for locking the support element (60) with respect to the guide direction (66) relative to the base element (50), characterized in that the latch (70) from the frame outer side in the direction of the frame inside in the base element (50) and the support member (60) can be inserted. Fitting according to claim 1, characterized in that the bolt is substantially parallel to the frame plane in the base member (50) and the support member (60) can be inserted. Fitting according to claim 1 or 2, characterized in that in the base element (50) at least one opening (65; 65 ') or recess is present, through which the bolt in the support element (60) can be inserted. Fitting according to one of the preceding claims, characterized in that on the support element (60) a plurality of along the guide direction (66) spaced openings (65; 65 '), recesses or depressions for receiving the bolt (70) are formed. Fitting according to claim 4, characterized - That the support element (60) comprises a substantially flat support plate (61) in which two parallel, extending in the guide direction rows of openings (65, 65 ') are formed, wherein the two rows in the longitudinal direction of the frame longitudinal spar (40) given distance; - That the base member (50) comprises a support plate (61) arranged parallel to the base plate (51) on which two guide portions (53, 53 ') are formed, which are seen in the longitudinal direction opposite and the support plate (61) and lead while preferably embrace the support plate (61) at their ends; - That in the base plate (51) has two openings (54, 54 ') which along the longitudinal direction the same predetermined distance as the two rows of openings (65, 65') of the support plate (61), wherein each of these openings for passing the bolt (70) into one of the openings (65, 65 ') of the support plate (61); and - That on the latch (70) two lugs (72, 72 ') are formed, each nose through each opening (54; 54') of the base plate (51) through in each case one of the openings (65; 65 ') of the support plate (61) can be inserted. Fitting according to one of the preceding claims, characterized in that the base element (50) and / or on the support element (60) limiting means (64) are formed to a displacement of the support member (60) on the base member (50) in the guide direction (66). to limit. Fitting according to claim 6, characterized in that the limiting means (64) comprise a projection on the support element (60), which in a predetermined lowest sliding position of the support element (60) strikes the base element (50) and thus blocks further displacement. Fitting according to one of the preceding claims, characterized in that the bolt (70) is arranged so that it rests after installation of the fitting on the frame longitudinal spar (30) in the inserted position on the frame longitudinal spar (30). Fitting according to one of the preceding claims, characterized in that on the base element (60) a fastening flange (52) or at least two fastening pins are formed, which are suitable, in a corresponding groove (41) or in corresponding openings in an inner side of the frame longitudinal spar ( 40) intervene. Fitting according to one of the preceding claims, characterized in that on the support element (60) at least one support pin (62) is formed to postpone a bearing element (10) for receiving the end of the crossbar (30, 30 ').

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