EP2602418B1 - Corner connection set - Google Patents

Description

The present invention relates to a corner joint set for connecting frame members at right angles. Such frame elements are preferably used in so-called parallel sliding systems, which are constructed of preferably glazed sliding elements. For variable opening options, these sliding elements between two rails, which are arranged on the top and bottom, arranged parallel to each other and slidably mounted. For design reasons, compared to conventional window or door elements, as used in the construction industry, for example, as patio doors, slender frame members made of hollow profile legs used and rectangular to sliding elements, which are then glazed or otherwise lined, composed.

The frame elements used are pushed by corresponding punched in the corner above the other and in particular not mitred, d. H. at a 45 ° angle, cut to make a corner joint. For the sliding elements known from the prior art, it is customary to accomplish a corner joint by simply screwing the vertically extending frame member with a arranged in a horizontally extending frame member screw.

However, this known from the prior art approach has certain disadvantages in terms of their stability. In particular, an improvement of the wind load capacity and the burglar resistance of the parallel thrust system as a whole and the sliding elements in particular is desired.

document NL 1 025 505 C2 discloses a corner joint set according to the preamble of claim 1. It is the object of the present invention to overcome the problems known from the prior art.

This object is achieved by a Eckverbindungsset according to the features of claim 1.

An inventive Eckverbindungsset for connecting rectangular frame elements of sliding elements has at least one corner connector and at least one securing element, wherein the corner connector substantially comprises two legs, of which a first leg has an outer contour which is formed so that it is a frame member, with a A second leg which is formed such that it causes a static stiffening of its associated frame member in the assembled state, wherein the securing element comprises separately or integrally a control element, which is a control of a corresponding to the outer contour formed inner contour original installation position of the fuse element allows even after disassembly.

To obtain the effect of the present invention, a corner joint set has at least one upper and one lower corner connector, the upper corner connector for connecting an upper frame member to a vertical frame member and the lower corner connector for connecting a lower frame member to the vertical frame member and the upper one Corner connector an upper securing element and the lower corner connector is associated with a lower securing element and the upper securing element acts as a safety catch and the lower securing element as a jump-over. An inventive Eckverbindungsset is thus preferably designed such that the connecting and securing elements are provided for each one side of a sliding element. In order to optimally achieve the effect according to the invention, of course, all corner joints of a sliding element should be designed with corner joints and securing elements according to the invention.

As a mounted state of the sliding element is hereinafter understood a state in which four individual frame elements are assembled by means of Eckverbindungssets invention to a rectangular sliding element.

The control element may be formed separately from the securing element or integrally connected to it, for example via a bending fold.

The problems known from the prior art are solved by the fact that the Eckverbindungsset according to the invention in comparison to the prior art, a much more stable Design of the individual sliding elements is made possible, with a combination of the corner connector with a securing element in addition to the increased stability of the sliding element and an increased security of the parallel sliding system is achieved altogether. By providing an additional control element, which is provided separately or in one piece on the securing element, it is achieved that the securing element is installed ensuring its securing function by a craftsman. By a check on the original installation position of the fuse element even after disassembly or partial destruction, it is particularly possible to clarify the insurance issues, for example, in a burglary or wind damage, the correct installation of Eckverbindungssets also subsequently to check.

As already described above, so-called parallel sliding systems are constructed with the sliding elements assembled with the aid of the corner connecting set, which have guide rails arranged on the top side and at the bottom side for guiding the individual sliding elements.

To ensure the required burglar resistance and a high wind load capacity, it is essential that not only the individual sliding elements are stably built in themselves, but that they are securely anchored in the parallel rails. The required safety is achieved by providing so-called safety locks on the upper side of the sliding elements and so-called skip safety devices on the underside of the sliding elements.

A particularly advantageous embodiment is achieved when the control element is mounted in the assembled state by a screw. The control element can be screwed by means of a control screw with the securing element and at the same time with a frame member, so that by the control screw screwed hole - preferably self-tapping screws are used - a correct attachment of the control element can be checked after disassembly.

The control element may be formed, for example, as a cap of the fuse element.

In such an embodiment, the securing element can be formed purely functional, as achieved by a corresponding cap occlusion of the functional elements and so a more appealing design can be provided.

The safety catch is preferably designed such that a running in a groove of the upper frame member web of an upper track by laterally one of the contour of the web adapted recess extending extensions of the safety catch in the mounted state, d. H. Here, when the sliding element is inserted between the upper and lower running rail, is laterally encompassed such that unhooking of the sliding element is not possible without destroying the safety catch.

The Eckverbindungsset can be configured overall functional if the upper control element of the safety catch is designed as a cap and the safety catch and the cap has corresponding to each other formed contours, such that a mounting position of the cap relative to the safety catch is clearly specified. By forming the control element as a cap is achieved that the associated fuse element can be formed substantially in accordance with its functionality and a corresponding external appearance of the overall arrangement can be achieved by the cap.

By providing mutually correspondingly formed contours on the safety catch and the cap can be achieved that according to the poka-yoke principle, a mounting position of the cap relative to the safety catch is clearly specified and so false assemblies can be prevented.

The correspondingly formed contours may be formed, for example, as a dovetail with a corresponding groove.

Since during the assembly of parallel sliding systems, in particular during assembly of the upper running rail due to deflections and / or manufacturing tolerances, deviations in the vertical distance between the lower and upper running rail may occur, it may be useful that the safety catch tolerance compensation in the form of a slot having. The slot is expediently dimensioned such that during assembly of the safety catch within the limits set by a longitudinal extent of the slot tolerance compensation can be done. The slot is preferably formed as a mounting opening through which a screw connection of the vertically extending frame member with a screw of the horizontally extending frame member. Through the slot, it is then possible to compensate for a deviation of the length of the vertical frame profile of the distance of the horizontally extending rails and still embrace the web of the upper track safely.

A particularly simple control of the original installation position of the securing element is made possible when the cap has a through hole for attaching a control screw, wherein the through hole is arranged such that a mounting position of the anti-theft protection is uniquely determined even after disassembly of the securing element or the anti-hanger. In a preferred embodiment variant of the Eckverbindungssets the cap can thus be attached to the safety catch, but has an additional through hole for the control screw on. The through hole in the cap is preferably provided in the securing element and leads directly to the located below the securing element frame member of the sliding element, so that when using self-tapping screws a hole in the corresponding vertically extending frame member is generated by the control screw. In this way, even after disassembly of the individual frame elements can still be clearly determined in which position - if necessary, taking advantage of the possible tolerance compensation - the safety catch was installed.

A further improvement in the required stability and safety can be achieved in that the jump protection is designed such that a running in a groove of the lower frame member lower web of a lower track by a contour of the web adapted recess in the jump fuse in monierter state laterally such is encompassed that skipping the sliding element without destroying the jump fuse is not possible. It is provided in particular that the jump protection further surrounds the web of the lower track with arranged laterally of the recess extensions as a roller of a carriage, which is arranged in the groove of the lower frame member. Typically, the roller of the carriage has a contour adapted to the lower web, which, in particular, if the web has, for example, a semi-circular contour formed upper termination, can cause a "run-up" of the roller on the flanks of the web. If the skip protection encompasses the web with the laterally arranged extensions to such an extent that even if the roller runs up against the outer contour of the web, a lateral offset of the sliding element - a skip - is prevented, the security of a corresponding parallel thrust system is further increased.

Corresponding to the formation of the safety catch, the jump safety device can also have a cover cap, so that the skip safety device can be designed essentially exclusively according to its functional requirements. For this purpose, the skip safety device and the cover cap have correspondingly contoured contours, which are in particular designed such that a mounting position of the cap relative to the skip safety is clearly specified, the contours are preferably designed such that a confusion of the cap of the skip protection and the Cover of the safety catch is prevented. Such a confusion can be ruled out, for example, in that the contours of the cap of the safety catch and the cap of the jump protection are formed inversely to each other, in different sizes or at different positions of the caps.

In order to facilitate the assembly of Eckverbindungssets invention, it is advantageous if the first leg of the corner connector is tapered towards its end.

By a tapered design of the first leg of the corner connector, a self-centering alignment of the corner connector can be achieved relative to its associated frame member.

An orientation of the corner connector relative to the frame member can also be improved by the fact that the first Leg has corresponding to the inner contour of the frame member formed guide flanks. By appropriate guide flanks and correspondingly formed contours of leg and frame member in addition to a centering also a wrong assembly of the corner connector can be prevented relative to the frame member.

In order to compensate for manufacturing tolerances between the corner connector and the frame profiles Abscherstege may be provided on the guide flanks. These shears are sheared off, for example, during the first insertion of the first leg in the associated frame profile by a front peripheral edge of the frame profile, so that then a play-free seat of the corner connector is ensured in the frame profile.

In order to ensure a precise alignment of the corner connector to the frame profile, it may be useful that the corner connector has a stop at a transition from the first leg to the second leg. This stop can be designed, for example, as a peripheral stop or only selectively.

In order to further improve an alignment of corner connector and frame element to one another, it may be useful if at least one, but preferably two centering pins are provided on the stop for aligning the pushed onto the first leg frame member.

The first leg of the corner connector may also have end flanks for a carriage or stiffening profiles end. By such approach flanks, at the same time as joints between the corner connector and the carriage and / or stiffening profiles, a precise alignment of the carriage and / or the stiffening profile is achieved relative to the corner connector. This may be of particular importance when a force is to be applied, for example, by the glass panes used in the sliding element at a defined position of the frame.

The first leg of the corner connector and the carriage and / or the stiffening profile can be firmly connected to each other to further increase the strength of the sliding elements, in particular glued, screwed or otherwise mechanically connected. As further mechanical connections, for example, taps, pinnacles or a one-piece design may be useful.

In order to achieve an increase in stability not only in the direction of the first leg of the corner connector, but also in the direction of the second leg of the corner connector, this can have an expansion slot. This along the second leg, preferably centrally extending expansion slot, for example, by means of screwed through the control elements control screw lead to an expansion or spreading of the second leg, so that it exerts a corresponding tension on the associated frame member and thus causes an additional stiffening.

In order to enable mounting of the frame elements while avoiding undefined weakenings of the corner connector, it makes sense if the second leg of the corner connector has a through hole which is designed and arranged such that a screwing of the corner connector and a second leg associated frame member with a screw the frame member associated with the first leg is possible. Characterized in that the through hole is provided in the factory in the second leg of the corner, it is avoided that at an undefined point a screw is driven by the corner connector in the screw of the first leg associated frame member.

In order to have an opportunity to engage in the groove of the first leg associated frame profile, in particular to allow access to a arranged in the groove carriage, it makes sense if the first leg in the longitudinal direction has a through-opening for a tool.

Fig. 1

ein fertig montiertes Schiebeelement einer Parallelschiebeanlage,

Fig. 2

eine vergrößerte Darstellung des oberen linken Eckeverbinders des Schiebeelementes aus Figur 1 in einem Schnitt senkrecht und einem Schnitt parallel zur Zeichenebene in Figur 1,

Fig. 3

eine vergrößerte Darstellung des unteren linken Eckeverbinders des Schiebeelementes aus Figur 1 in einem Schnitt senkrecht und einem Schnitt parallel zur Zeichenebene in Figur 1,

Fig. 4

den Eckeverbinder aus Figur 3 in einem perspektivisch dargestellten Teilschnitt,

Fig. 5

eine perspektivische Darstellung des Eckverbinders,

Fig. 6

eine perspektivische Darstellung eines unteren Eckverbinders mit Laufwagen,

Fig. 7

verschiedene Ansichten der Übersprungsicherung und

Fig. 8

verschiedene Ansichten der Aushängesicherung

The invention will be explained in detail below with reference to an embodiment with reference to the accompanying figures. Show it:

Fig. 1

a fully assembled sliding element of a parallel sliding system,

Fig. 2

an enlarged view of the upper left corner connector of the sliding element FIG. 1 in a section perpendicular and a section parallel to the plane in FIG. 1 .

Fig. 3

an enlarged view of the lower left Eckeverbinders of the sliding element FIG. 1 in a section perpendicular and a section parallel to the plane in FIG. 1 .

Fig. 4

the corner connector FIG. 3 in a partially sectioned perspective,

Fig. 5

a perspective view of the corner connector,

Fig. 6

a perspective view of a lower corner connector with carriage,

Fig. 7

different views of the skip protection and

Fig. 8

different views of the safety catch

FIG. 1 shows a section of a parallel sliding system with a sliding element 1, a lower running rail 3 and an upper running rail 5. The rails 3, 5 are aligned substantially parallel and arranged such that the sliding element 1 between the rails guided on the basis of a web-groove arrangement and thus along the rails 3, 5 is displaceable.

The sliding element 1 is composed of a lower frame member 7, an upper frame member 9 and a right frame member 11 and a left frame member 13, wherein the frame members 7, 9, 11, 13 consist of so-called hollow chamber profiles. The horizontally extending frame elements 7, 9 are typically formed with a profile that differs from the profile of the vertically extending frame elements 11, 13. In particular, the horizontally extending frame elements 7, 9 in the longitudinal direction of a so-called screw 15, by means of which a screwing of the frame profiles at the corners of the sliding element 1 is possible. The horizontally extending frame members 7, 9 also have longitudinal grooves, which cause a guide of the sliding element 1 for guiding the sliding element 1 in cooperation with webs 31, 51 of the lower and upper running rail 3, 5. The vertically extending frame members 11, 13 have for fitting end corresponding to punched, in the horizontally extending frame members 7, 9 can be accommodated, so that by a screw through the outer wall of the vertically extending frame members 11, 13 in the screw 15 of the horizontally extending frame members 3, 9 a mounting of the frame members 7, 9, 11, 13th to a sliding element 1 having a substantially rectangular shape is possible.
FIG. 2 shows two different views of the in FIG. 1 with A marked detail.
In FIG. 2a is a top view from the left on the in FIG. 1 marked section A. In FIG. 2b the same section of a cut plan view is shown from the front.
FIG. 2a shows a plan view of the front side of the upper left corner of the mounted sliding element 1 from FIG. 1 , In this view, it can be seen particularly well that the sliding element 1 is guided by an interaction of the groove in the sliding element with the web 51 of the upper running rail 5. On the front side of the left frame member 13 is a securing element 4, which is designed as a so-called safety catch provided. The securing element 4 has a cap 41, which also serves as a control element for checking a correct installation of the fuse element 4 after a possible damage. The control element 41 is designed such that it has an obvious control bore, which clearly signals the absence of a screw - so this is not used - for a customer of the corresponding parallel thrust system. Once the control screw 36 is inserted into the control element 41, this leaves a hole in the underlying frame member 13, thus allowing the mounting position the fuse element 4 is still uniquely determined even after disassembly.

In the in FIG. 2b shown sectional view is the interlocking of the left frame member 13 shown here by way of example with the upper frame member 9 also exemplified particularly well to recognize, in particular an upper corner connector 19 and the upper securing element 4 are also shown with the upper control element 31.

The upper frame member 9 and the left frame member 13 engage with each other by corresponding punched-out after assembly and cooperate with the upper corner connector 19 such that a screw connection between the left frame member 13 and the upper frame member 9 by an upper mounting screw 34 by a left outer wall of the left frame member 13 is screwed through a through hole of the corner connector 9 in the screw 15 of the upper frame member 9, takes place. By providing the corner connector 19, in particular a distribution of the forces occurring at the upper mounting screw 34 on the adjoining frame members 9, 13 is achieved. Characterized in that the securing element 4, which is formed at the upper corners as a safety catch, also secured to the upper mounting screw 34, a defined orientation of the securing element 4 is set to the left frame member 13.

In the in FIG. 2b shown sectional view is also seen that the securing element 4 has a slot 43 which allows a displacement of the securing element 4 in the longitudinal direction and within the predetermined by the slot 43 boundaries. The slot 43 thus allows a compensation of manufacturing tolerances that may occur, for example, due to deflections of the upper runner 5. Through the slot 43, it is possible to bring the securing element 4 so close to the web 51 of the upper running rail 5, that after fixing a unhooking of the sliding element 1 without destruction of the shear element 4 is no longer possible.

In FIG. 2b is also the control element 41, which is formed in the present embodiment as a cover of the fuse element or the safety catch 4, to recognize. The control element 41 and the underlying safety catch 4 have control holes 45 for receiving a control screw 36. The control screw 36 is driven by the control element 41 and the safety catch 4 in the vertically extending frame member 13, so that at the corresponding location a bore in the frame member 13 is formed. Through the hole in the frame member 13 and due to the defined arrangement of the through holes 45 on securing and Kotrollelement 4, 41 a clear determination of the mounted position of the securing element 41 is possible even after disassembly of the sliding element 1, so that it is determined whether the fuse element 41 correct, ie a detachment of the sliding element 1 was used preventing.

FIG. 3 shows two different views of the section marked B FIG. 1 , FIG. 3a shows a plan view of the front side of the lower left corner of the parallel thrust system Figure 1. Figure 2b shows a sectional plan view of the in FIG. 1 with B marked section.

In FIG. 3a is a plan view of the front side of the lower left corner of the parallel thrust system off FIG. 1 shown. The sliding element 1 runs as shown FIG. 3a it can be seen on a web 31 of the lower running rail 3, wherein for securing the sliding element 1, a securing element 6, which is designed as a skip protection is provided. The fuse element 6 has to ensure correct assembly and to control an original mounting position of the fuse element 6, a control element 61, which is designed as a cap for the jump fuse 6, on. The securing element 6 has on its underside a recess 62, which is adapted in its contour to the shape of the web 31 of the lower running rail 3. By side of this recess 62 arranged intentions 64, the securing element 6 surrounds the web 31 in the vertical direction such that a
Skip the sliding element is prevented in the assembled state.

How out FIG. 3b partially apparent, this is achieved in that the jump-over 6 is designed such that it overlaps the web 31 as a roller 81 of a carriage 8, so that even if the roller 81, by means of which the sliding element 1 runs on the web 31, would jump from this, a fixation of the sliding element 1 is achieved by the securing element 6.

In the in FIG. 3b As shown in Figure 2b - the interlocking of the frame elements 7, 13 can be seen. The lower frame member 7 engages in the left frame member 13 such that a screwing of the left frame member 13 by means of a lower mounting screw 33, including the lower corner connector 20 in the Screwing 15 of the lower frame member 7 opens. Characterized in that the lower corner connector 20 is included in this gland, as well as in the upper area, a distribution of forces acting on the mounting screw 33 forces on the frame members 7, 13 achieved. In the screw connection of the frame elements 7, 13
Also included is the lower securing element 6, which is designed as a jump-over protection of the functionality described above. The cap 61 of the jump over device 6 is designed as a control element such that a control bore 68 as a through hole for a lower control screw 35 has. The lower control screw 35 thus leaves, similar to the upper area, a hole in the vertically extending frame member 13, so that a mounting position of the jump fuse is also clearly identifiable even after disassembly.

Since no tolerance compensation is provided in the corner joint for the lower frame member 7, a control of the installation position is not necessary. However, but can be determined by the correct placement of the caused by the lower control screw 35 bore, if ever a fuse element was mounted.

Both in the upper and in the lower Eckverbindungsbereich the control screw engages in an expansion slot 29 of the installed corner connector 2 and thus causes a spreading of running in the vertically arranged frame member leg of the corner connector 2. This leads to an additional strain and thus stiffening the corner connector 2, 19, 20.

As in FIG. 3b shown, a carriage 8 is provided immediately adjacent to the lower corner connector 20 in a groove of the lower frame member 7. The carriage 8 has the roller 81, which is mounted in an inner carriage 82, which allows a height adjustment for the sliding element. The inner carriage 82 is arranged in the carriage 8 via a parallelogram guide 84. By adjusting screw 84 thereby height adjustment of the sliding element 1 is possible.

FIG. 4 shows a perspective view of the detail shown in Figures 3a and 3b.

In this perspective view, the meshing of the lower frame element 7 and the left frame element 13 can be seen particularly well. By a laterally cut window, the arrangement of the lower corner connector 20 and the carriage 8 within the frame members 7, 13 is also visible. The carriage 8 overlaps in this case a front portion of a first leg 21 of the lower corner connector 20, wherein the first leg 21 of the corner connector 20 is oriented in the direction of the lower frame member 7.

The lower frame member 7 is overlapped in the corner of the left frame member 13 and generally formulated the vertically extending frame members 11, 13. A screwing of the vertically extending frame members 11, 13 via the securing element 4, 6 and the corner connector 2 in the screw 15 of the lower and horizontal frame member 7, 9. As can be seen very well in this perspective view, the lower track rail 3rd a total of 3 lower webs 31, wherein embodiments with fewer or more webs are conceivable.

The construction of the lower left corner connection described above is transferable to all corner joints of the sliding element and formed there correspondingly.

FIG. 5 shows a perspective view of a corner connector 2 according to the invention, wherein the corner connector 2 consists essentially of a first leg 21, which has a profile corresponding to the horizontal frame elements 7, 9, and a second leg 22, substantially as an elongated cuboid, the first leg 21 is attached to the end, is formed.

The first leg 21 has a corresponding to an inner profile of the horizontally disposed frame members 7, 9 formed outer profile, wherein the first leg 21 is formed starting from the second leg 22 to its other end tapered. As a result of this conically tapering design, the first leg 21 of the corner connector 2 is designed to be self-centering with respect to the frame profile assigned to it and, by additionally provided guide flanks 24, has a clear installation position relative to the frame element. In order to achieve a final centering of the first leg 21 with respect to the frame member associated therewith, two centering pins 26 are provided on the second leg 22 and aligned parallel to the first leg 21, which engage in centering grooves of the frame element and thus the alignment of frame member and Define corner connectors 2 to each other.

The first leg 21 also has a passage opening 30 through which, for example, on a behind the first leg 21 arranged carriage 8 and its adjusting screw 84 can be penetrated with a tool. On the upper side, the first leg 21 also has a groove extending in the longitudinal direction of the first leg 21, in which the screw 15 of the horizontal frame elements is received during assembly of the sliding elements. In extension of this groove, the second leg 22 has a through hole 28 through which the mounting screws 33, 34 are screwed by means of which the frame members 7, 9, 11, 13 are screwed.

To a tolerance compensation between the outer contour of the first leg 21 and the inner contour of the frame members 7, 9 Abscherstege 25 are provided on the first leg 21, which are virtually entkratet at a first assembly by attaching the frame member, so that a play-free seat corner connector 2 and frame member. 7 , 9 is reached.

The first leg 21 of the corner connector 2 has on the inside also approach flanks, which are designed such that, for example, the carriage or stiffening profiles defined recognized, aligned and optionally glued to the corner connector, can be screwed or pinned.

The second leg 22 has, as already mentioned, in the longitudinal extent of an expansion slot 29, in which the control screws 35, 36 engage in a correct installation. A check of the mounting position of the fuse elements can thus also be done on the basis of existing in the expansion slot 29 Schraubspuren.

An expansion of the second leg 22 by screwing the control screws 35, 36 in the expansion slot 29 causes a spreading of the second leg 22 so that this an associated frame member 11, 13 applied from the inside with pressure and thus generates a stiffening in the corner.

In order to achieve a defined installation depth of the corner connector 2 in the horizontal frame members 7, 9, the second leg 22 is attached to the first leg 21 such that it forms a peripheral stop 23 on which the centering pins 26 are arranged.

FIG. 6 shows a perspective view of a lower Eckverbindungsets, consisting of the lower corner connector 20, the lower securing element 6 together with the lower control element 61 and the carriage 8 arranged thereon.

The individual frame elements, such as those in the FIGS. 3 and 4 have been omitted for clarity in this figure.

In this illustration, it can be seen particularly well that the lower securing element 6, the skip safety device, which is in FIG. 5 described through opening 30 is considerably reduced by the first leg 21 of the corner connector 2, so that almost a positive connection with the web 31 and the lower running rail 3 is achieved. In this way, skipping of the sliding element 1 due to a force acting perpendicular to the sliding direction is avoided particularly effectively. To reduce the passage opening 30, the lower securing element 6 has a recess 62 for receiving the web 31, laterally of which two extensions 64 are arranged, which engage over the web 31 in the assembled state.

The extensions 64 are designed such that they engage over the web 31 further than those arranged in the carriage 8 Roller 81, so that a lateral movement of the sliding element running base of the lower securing element 6 and the extensions 64 of the lower securing element 6 is limited. In FIG. 6 the carriage 8, as it is arranged in the lower frame member 7, can be seen particularly well. The roller 81 of the carriage 8 is mounted in an inner carriage 82 which is connected to a frame of the carriage 8 via a parallelogram 83. Due to the adjusting screw 84, which is arranged between the frame and the inner carriage 82, so a height adjustment of the inner carriage 82 can be made relative to the frame, whereby a total height adjustment of a finished mounted sliding element 1 is possible. A penetration of the adjusting screw 84 is possible due to the passage opening 30 in the leg 21 of the corner connector 2. Corresponding to the passage opening 30, the vertically extending frame element 13 has a punched-out and the lower securing element has a tool opening 65.

In FIG. 6 is particularly well the interaction of a arranged in the control bore 68 control screw 35 with the expansion slot 29 of the second leg 22 to recognize. If the control screw 35 is screwed through the control bore 68 and the frame element located between the securing element 6 and the corner connector 2, then this penetrates into the expansion slot 29 and thereby causes a spreading of the second leg 22, so that it is pressed on the inside of the side walls of the frame member , In this way, an additional reinforcement in the corner can be achieved.

In FIG. 7 different views of the lower securing element 6, the skip safety, shown.

Figure 7a shows a perspective view of the jump fuse 6 together with its associated cap 61, wherein the FIGS. 7b and c the fuse element 6 and the cap 61 show separately.

From the FIGS. 7b and c It can clearly be seen that the skip safety device 6 as well as its associated cap 61 and the control element 61 have corresponding contours to one another, which make it possible to hide the cap 61 with the securing element 6. In the present embodiment, the securing element 6 in the region of the recess 62 laterally arranged dovetail grooves 66, to which the cap 61 has correspondingly formed dovetails 66. By these correspondingly formed contours 66 is a faulty attachment of the cap 61, which also serves as a control element 61, excluded. Both the jump fuse 6 and the control element 61 have control holes 68 which are aligned in the assembled state to each other. Through these control holes 68, the control screw 35 is guided during assembly, which then allows a review of the original mounting position of the jump fuse.

The FIGS. 8a to d show different views of the upper securing element 4, respectively the safety catch 4, and the associated control element 41, which is also designed as a cap.

FIGS. 8a shows a perspective view of the safety catch 4 together with the cap 41. Die FIGS. 8b and c each show a plan view and a side view of the individual elements.

The safety catch 4 and the control element 41 have mutually correspondingly formed contours, which allow a plugging of the control element 41 on the safety catch 4. As already related to FIG. 7 described here, the contours 44 are realized as correspondingly formed Schwalbenschwanznuten 44 and dovetails. In order to prevent a mutual confusion of the upper and lower control elements 41, 61, respectively, caps, the respectively provided plug contours are provided in different sizes and at different locations of the respective elements, so that incorrect assembly is excluded.

As already described several times, the safety catch 4ein an oblong hole 43, which allows tolerance compensation in the scope of the predetermined by the longitudinal extent 1 of the slot 43 frame. Starting from a hole for the mounting screw 34 so that the position of the safety catch 4 vary around the longitudinal extension 1 of the slot 43. A correct installation of the safety catch 4 can thus not be determined safely due to the mounting hole. Due to the additional control bore 45, which is provided in the safety catch 4 and the control element 41, when a control screw 36 is inserted, based on the apparent by the control screw 36 in the profile hole, the position of the safety catch are clearly determined.

The decisive idea for the present invention is, in particular, that when a control element with a control bore is provided, the buyer of the parallel thrust system will automatically work to ensure that the control bores 45, 68 are equipped with screws, the control screws 35, 36 become. Due to the control screws 35, 36 visible in the frame elements holes, it is possible that even a disassembly or partial destruction of the sliding element, the installation position of the fuse elements 4, 6 is still clearly determinable and thus can be determined for liability issues.

LIST OF REFERENCE NUMBERS

1

sliding element

2

Corner connector

3

lower track

4

Fuse element / safety catch

5

upper track

6

lower securing element / skip protection

7

lower frame element

8th

carriage

9

Upper frame element

11

right frame element

13

left frame element

19

Upper corner connector

20

lower corner connector

21

first leg

22

second leg

23

attack

24

guide flanks

25

Abscherstege

26

spigot

27

approach flanks

28

Through Hole

29

expansion slot

30

Through opening

31

lower jetty

33

bottom mounting screw

34

upper mounting screw

35

lower control screw

36

upper control screw

41

Upper control element / upper cap

42

recess

43

Long hole

44

Contour / control hole

46

projections

47

check screw

51

upper jetty

61

lower control element / cap

62

recess

63

mounting hole

64

projections

66

Contour / swallowtail

68

inspection hole

71

groove

81

caster

82

inner carriage

83

parallelogram

84

adjustment

91

groove

1

longitudinal extension

Claims (20)

1. Corner connection set for right-angled connection of frame elements (7, 9, 11, 13) by sliding elements (1) having

   - at least one corner connector (2, 19, 20) and

   - at least one retaining element (4),

   wherein the corner connector (2) has substantially two legs (21, 22), of which a first leg (21) has an outer contour which is formed in such a way that it aligns a frame element (7, 9) with an inner contour formed correspondingly to the outer contour relative to the corner connector (2), and a second leg (22) is formed in such a way that, when mounted, it causes a static reinforcement of its assigned frame element (11, 13), wherein the retaining element (4, 6) has a control element (41, 61) that allows a control of an original mounting position of the retaining element (4, 6) even after dismounting, characterised in that
   the retaining element (4, 6) separately or integrally includes the control element (41, 61), and the set has at least one upper and one lower corner connector (19, 20), wherein the upper corner connector (19) is formed for connecting an upper horizontal frame element (29) to a perpendicular frame element (11, 13), and the lower corner connector (20) is formed for connecting a lower horizontal frame element (7) to the perpendicular frame element (11, 13), and wherein an upper retaining element (4) is assigned to the upper corner connector (19) and a lower retaining element (6) is assigned to the lower corner connector (20), and the upper retaining element (4) acts as a safety catch and the lower retaining element (6) acts as a spring lock.
2. Corner connection set according to claim 1,
   characterised in that
   the control element (41, 61), when mounted, is secured by a screw connection (control screw).
3. Corner connection set according to claim 1 or 2,
   characterised in that
   the control element (41, 61) is formed as a cover cap of the retaining element (4, 6).
4. Corner connection set according to one of the preceding claims,
   characterised in that
   the safety catch (4) is formed in such a way that, when mounted, a web (51) of an upper guide rail (5), said web (51) running in a groove (91) of the upper frame element (9), is laterally encompassed by means of extensions (46) of the safety catch (4) that run at the side of a recess (42) adjusted to the contour of the web (51) in such a way that decoupling the sliding element (1) is prevented without destroying the safety catch (4).
5. Corner connection set according to one of the preceding claims,
   characterised in that
   the upper control element (41) of the safety catch (4) is formed as a cover cap and the safety catch (4) and the cover cap (41) have contours formed correspondingly to each other in such a way that a mounting position of the cover cap (41) relative to the safety catch (4) is clearly predetermined.
6. Corner connection set according to one of the preceding claims,
   characterised in that
   the safety catch (4) has an elongated hole (43) that is formed in such a way that, when mounting the safety catch (4), a tolerance compensation can take place within limits predetermined by a longitudinal extension (1) of the elongated hole (43).
7. Corner connection set according to claim 5,
   characterised in that
   the cover cap (41) additionally has a through-hole (45) for attaching a control screw (47), wherein the through-hole (45) is arranged in such a way that a mounting position of the safety catch (4) can also be clearly determined after dismounting the retaining element (41).
8. Corner connection set according to one of the preceding claims,
   characterised in that
   the spring lock (6) is formed in such a way that, when mounted, a lower web (31) of a lower guide rail (3), said web (31) running in a groove (71) of the lower frame element (7) is laterally encompassed by means of a recess (62) in the spring lock (6) adjusted the contour of the web (31) in such a way that springing forward of the sliding element (1) is prevented without destroying the spring lock (6).
9. Corner connection set according to claim 8,
   characterised in that
   a carriage (8) having a roller (81) with a contour adjusted to the lower web (31) is arranged in the groove (71) of the lower frame element (7) and the spring lock (6) is formed in such a way that a springing forward of the roller (81) is prevented by the spring lock (6) encompassing the web with the extensions (64) arranged at the side of the recess (62) further than the roller (81).
10. Corner connection set according to claims 8 or 9,
    characterised in that
    the spring lock (6) has a cover cap (61) and the spring lock (6) and the cover cap (61) have contours (66) that are formed correspondingly to each other in such a way that a mounting position of the cover cap (61) relative to the spring lock (6) is clearly predetermined, wherein the contours (66) are preferably formed in such a way that mixing up the cover cap (61) of the spring lock (6) and the cover cap (41) of the safety catch (4) is prevented.
11. Corner connection set according to one of the preceding claims,
    characterised in that
    the first leg (21) of the corner connector (2) is formed to run conically towards its end.
12. Corner connection set according to claim 10,
    characterised in that
    the first leg (21) has guide flanks (24) formed correspondingly to the inner contour of the frame element (7, 9).
13. Corner connection set according to claim 11,
    characterised in that
    the guide flanks (24) have shearing webs (25) to compensate for production tolerances.
14. Corner connection set according to one of the claims 10 to 12,
    characterised in that
    the corner connector (2) has a stop (23) on an intersection from the first leg (21) to the second leg (22).
15. Corner connection set according to claim 14,
    characterised in that
    the stop (23) has at least one, preferably two centring spigots (26) for aligning the profile (7, 9) that has slid onto the first leg (21).
16. Corner connection set according to one of the preceding claims,
    characterised in that
    the first leg (21) of the corner connector (2) has attachment flanks (27) at the end for a carriage (8) or stiffening profiles.
17. Corner connection set according to claim 16,
    characterised in that
    the corner connection set further comprises a carriage and/or a stiffening profile, wherein the carriage (8) and/or the stiffening profile is firmly connected to the first leg (21) of the corner connector (2), in particular glued, screwed or otherwise mechanically connected.
18. Corner connection set according to one of the preceding claims,
    characterised in that
    the second leg (22) of the corner connector has an expansion slot (29).
19. Corner connection set according to one of the preceding claims,
    characterised in that
    the second leg (22) of the corner connector (2) has a through-hole (28) which is formed and arranged in such a way that screwing the corner connector (2) and a frame element (11, 13) assigned to the second leg (22) to a screw channel of the frame element (7, 9) assigned to the first leg (21) is possible.
20. Corner connection set according to one of the preceding claims,
    characterised in that
    the first leg (21) has an access opening (30) in the longitudinal direction for a tool.

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