DE202011050167U1 - Corner connector for hollow profile frame - Google Patents

Abstract

Corner connector (10) for hollow profile frames, with an angle piece (12) with two legs (14, 16) which are provided for insertion into the end sections of two hollow profiles (32, 34) of the frame to be connected, characterized in that the angle piece (12 ) comprises a first shaft element (22) and a second shaft element (24) which can be anchored in the respective end sections, which first shaft element (22) forms at least part of a first leg (14) and which second shaft element (24) forms the second leg (16) and a corner area (28) of the angle piece (12) which lies in the axial extension of the first shaft element (22), the corner connector (10) also having a clamping screw (38) for clamping the two shaft elements (22, 24) ) against each other, which extends axially through the corner region (28) into the first shaft element (22) and is screwed into it.

Description

The present invention relates to a corner connector for hollow profile frame according to the preamble of claim 1.

Such corner connectors are used to connect the mitered end portions of two hollow sections of a frame, such as a window or door frame at right angles to each other. The corner connector comprises for this purpose an elbow with two legs, each of which can be inserted into the end portions of the hollow sections to be connected and anchored or braced therein. In this case, it is necessary to assemble the hollow profiles precisely and with the appropriate tension. On the one hand, the connection should have the required stability, on the other hand, however, to avoid high pressures or stresses in the frame, so that no damage occurs.

For bracing the elbow in the hollow sections already exists a larger number of solutions, such as the connector elbow, in DE 199 00 957 A1 proposed by the applicant. Here, wedge-shaped end portions of the leg are braced on this by means of clamping screws, so that withdrawal from the hollow profiles is no longer possible. This type of angle connectors is particularly suitable for window or door frames made of plastic or aluminum.

Recently, hollow frame profiles are also made of a mixture of materials, which in addition to plastic also contains wood or wood-based materials, such as wood flour or the like. This is desirable for the sake of a resource-conserving and thus environmentally friendly production, since here also recycled materials can be used. However, these materials are comparatively new in window and door construction and make special demands with regard to the corner connectors. Such hollow profiles can be held together with high compressive loads, which can not be applied by the previously known corner connectors, which use a spline connection. However, it is important to control the load, i. apply with a given force. In the known angle connectors, this is not readily possible.

Object of the present invention is therefore to provide a corner joint for hollow profile frame, which is easy to install and reliable and allows the application of high pressure loads on the joint with controlled effort.

This object is achieved by a corner connector with the features of claim 1.

The angle piece of the corner connector according to the invention has a multi-part construction and comprises a first and a second shaft element which are to be firmly anchored in the respective end sections of the hollow sections to be connected. The first of these shaft elements forms at least a part of the first leg of the elbow, while the second shaft member in addition to the second leg additionally forms the corner region at which meet the legs and thus lies in the axial extension of the first shaft member to the connection point. The two shaft elements are connected to each other by a clamping screw, which is guided from the outside through said corner region into the first shaft element and screwed into this.

By turning the clamping screw, the first shaft element can be pulled in the direction of a stop surface of the second shaft element and clamped against it. Due to the anchoring of the shaft elements in the hollow sections to be joined thus also takes place a distortion of the hollow profiles against each other by these collide at their Miter cutting surfaces. On the clamping screw high, but controlled forces can be exercised by means of a torque wrench, so that by adjusting the torque and the pressure is selected with which the hollow sections are pulled against each other. An attached between the hollow sections of the Miter cutting surfaces seal is compressed in this way with a certain pressure.

During assembly, for example, the second shaft element is first inserted into its corresponding hollow profile end section until a defined position is reached, which can be predetermined by a stop. In this position, the head of the clamping screw is exposed on the opposite side of the hollow profile in an opening and is thus accessible. In this position, the second shaft member is anchored in its hollow profile, for example, by an anchor bolt is screwed into the second shaft member from the outside through a wall of the hollow profile.

The end portion of the remaining hollow profile is then attached to the first shaft member until an internally threaded bore in the first shaft member is aligned with a corresponding opening in the outer wall of the hollow profile, so that an anchor screw can be screwed therein anchoring the first shaft member in its hollow profile.

The two hollow sections are now already connected to each other by the elbow. However, they are not aligned yet, and their miter cuts do not touch each other yet.

In the following, the clamping screw is rotated, which is accessible through the opening of the hollow profile, in which the second shaft member is anchored, so that the first shaft member is pulled along with its hollow profile against the second shaft member until the Miter cutting surfaces (or the seals mounted thereon) get in touch with each other. The tightening of the clamping screw can be done with a preselected torque, for example by means of a torque wrench, so that the pressure is determined with which the hollow profiles are braced against each other.

According to a particular embodiment of the present invention, the two shaft elements are anchored in the respective end portions by anchor bolts, which are screwed from the outside through the walls of the end portions in the shaft elements.

Preferably, the second shaft element is preceded by guide pins, which extend axially through the first shaft element and on which the first shaft element can slide. These guide pins may, for example, be threaded bolts which extend completely through channels in the first shaft element and are screwed into the second shaft element.

According to a further preferred embodiment, the second shaft element is L-shaped and comprises an outgoing from the corner portion of the first leg, which is axially aligned with the first shaft member, while the remaining part is formed by the first shaft member.

Preferably, the second leg of the elbow formed by the second shaft member has a step, which can serve as a stop when inserting the second shaft member in the end portion of the hollow profile, which determines the insertion depth.

Further preferably, a pair of additional guide angle is further attached to the angle piece, which are integrally formed on the second shaft member and whose legs are rails that extend parallel to the shaft members. The rails provide additional guidance of the hollow profile, which is attached to the first shaft member, so that a lateral tilting or slipping is prevented. When tightening the clamping screw then only the axial distance or the pressure is changed against the other hollow profile.

In the following a preferred embodiment of the invention will be described with reference to the accompanying drawings.

1 is a perspective view of an embodiment of the corner connector according to the invention;

2 is a side section through the end portions of two hollow profiles, which according to the invention by the corner connector 1 are connected;

3 is a section along the line BB in 2 showing a cross section through the horizontal hollow section with the corner connector inserted therein;

4 is a horizontal longitudinal section along the line AA in 2 ;

5 is a further perspective view of a portion of the corner connector according to the invention, without the first shaft member;

6 is a rear view of the corner connector 5 ;

7 is a section along the line AA in 6 ; and

8th is another view of the corner connector 5 from a further perspective in the direction of the axis of the clamping screw.

The in 1 illustrated corner connector according to the invention 10 is used to connect two hollow profiles of a frame, such as a window or door frame, as related to 2 shown in more detail. This corner connector 10 However, it is not suitable exclusively for use on window or door frame profiles, but is equally suitable for hollow profile frames of other types, such as photovoltaic modules or the like.

The corner connector 10 is a total of L-shaped and includes an elbow 12 with two thighs 14 . 16 , Which are at right angles to each other and are provided for insertion into the end portions to be joined two hollow sections of the frame.

The elbow 12 includes two shaft elements 22 . 24 , which are held together by a clamping and guiding mechanism and are movable against each other, as will be described in more detail below. The first shaft element 22 (in 1 right) is a plastic profile section that forms part of the first leg 14 forms. The first leg is completed 14 through a part 26 of the second shaft member 24 that is from the corner area 28 of the elbow 12 extends out and in the axial extension of the first shaft member 22 lies. As a corner area 28 shall in the following that area of the elbow 12 be considered, in which the two legs 14 . 16 or whose leg axes meet. This area also forms the contact point for the hollow sections to be connected.

The second shaft element 24 further forms the second leg 16 of the elbow 12 as well as the corner area 28 , The second shaft element 24 is thus L-shaped and forms the larger part of the elbow 12 ,

The sides are at the elbow 12 lead angle 18 . 20 attached, which is integral with the second shaft member 24 are formed. The thigh 50 . 52 . 64 . 66 the guide angle extending parallel to the shaft elements 22 . 24 , Overall, the guide angles 18 . 20 formed at right angles, and her thighs 50 . 52 . 64 . 66 are rails that serve for insertion into the hollow sections for guidance.

Each of the two shaft elements 22 . 24 can be anchored in the end portion of a hollow profile, with the aid of anchor bolts, the example here by the reference numeral 30 are designated. The anchor bolts 30 are inserted through holes in the walls of the hollow sections and in aligned internal thread in the respective shaft elements 22 . 24 screwed in, leaving the shaft elements 22 . 24 are no longer axially displaceable with respect to the hollow profiles.

In the final assembly position are the two legs 14 . 16 of the elbow 12 as well as the corresponding legs 50 . 52 . 64 . 66 the guide angle 18 . 20 completely inserted into the respective hollow profiles. This position is in 2 shown, based on which also the clamping mechanism for clamping the two shaft elements 22 . 24 and thus the permanently connected hollow sections to be explained. 2 shows a horizontal hollow profile of a window frame and an upright further hollow profile 34 , Both hollow profiles 32 . 34 are mitred and connected together in their final position on the miter cutting surfaces. Between the cut surfaces lies a seal 36 made of an elastic material that is also in 1 is shown, the contact position of the two hollow profiles 32 . 34 to make it more visible. This seal 36 is when connecting the hollow sections 32 . 34 slightly compressed.

2 further shows the seat of the L-shaped corner connector 10 within the hollow sections 32 . 34 , The horizontal first leg 14 of the elbow 12 extends into 2 to the right of the seal 36 out into the hollow profile 32 inside, while the second leg 16 perpendicular to it and is accordingly from below into the other hollow profile 34 extends into it. The anchor bolts 30 are also shown, there are two anchor bolts 30 for anchoring a shaft element 22 such as 24 intended.

The connection between the two hollow sections 32 . 34 is created by the two shaft elements 22 . 24 by means of a clamping screw 38 be contracted, extending through the corner area 28 as well as through the part 26 of the second shaft member 24 axially into the first shaft element 22 extends into it. In 2 is the axis of the clamping screw 38 horizontally, and it is visible as the external thread of the clamping screw 38 in the first shaft element 22 intervenes. The in 2 left head 40 the clamping screw 38 is through an opening 42 in the second shaft element 24 accessible, on the side, the first leg 14 is remote, as well as through a corresponding hole in the outer wall of the vertical hollow profile 34 , which is not shown in detail. A tool can thus be through the hole in the frame profile 34 in the opening 42 Insert, leaving one end on the screw head 40 engages and exerts on this torque. The rotation of the clamping screw 38 causes the first shaft element 22 on the second shaft elements 24 is moved to or from this, depending on the direction of rotation. Preferably, for clamping the hollow profiles 32 . 34 against each other in the horizontal hollow profile 32 anchored first shaft element 22 against the second shaft member 24 attracted, so that the hollow sections 32 . 34 be tightened on each other and the seal 34 is compressed. By choosing a specific torque on the clamping screw 38 acts, the pressure can be adjusted, with which the hollow profiles 32 . 34 at the seal 36 be pressed on each other.

For clarity, the guide angles 18 . 20 in 2 not shown in detail. They serve when inserting the corner connector 10 in the hollow sections 32 . 34 for guidance and centering. During assembly, the second leg is first 16 of the elbow 12 in the hollow profile 34 inserted, flanked by the corresponding legs of the guide angle 18 . 20 , This insertion takes place until a resistance is reached, for example, by a stop in the form of a step on the second shaft member 24 is formed. The end portion of the hollow profile 34 can be milled out or cut inside, leaving an extended area for one closer to the corner area 28 lying part of the second shaft member 24 is formed. At the bottom of this cutout can then be a stop surface for the corresponding gradation of the second shaft member 24 be present, which limits the insertion.

During this insertion of the second thigh 16 The profile rails provide the guide angle 28 an axial guide. They lie in adjacent chambers of the hollow profile 34 one extending laterally from a central channel of the hollow section 34 located, the second shaft member 24 receives. Is the corner connector 10 completely in the hollow profile 34 used, the second shaft element can be 24 by screwing in the anchor bolts 30 anchor in it.

Subsequently, the remaining hollow profile 32 on the first thigh 14 deferred so that the first shaft element 22 in the central channel in the hollow profile 32 into slides. 3 shows how the first shaft element 22 in the channel 44 rests. The adjacent channels arranged 46 . 48 serve to accommodate the remaining rails of the guide angle 18 . 20 (in 3 not shown). The first shaft element 22 slides so far into the central canal 44 into it until the internal threads for the anchor bolts 30 in the first shaft element 22 with the corresponding openings in the outer wall of the hollow profile 32 aligned. In this position, the anchor bolts 30 inserted from the outside into the openings and into the internal threads of the first shaft element 22 are screwed in, so that the first shaft element 22 firmly in the hollow profile 32 anchored.

The two hollow profiles 32 . 34 are thus fixed by the corner connector 10 connected, but not yet clamped together. This is done by the already described turning the clamping screw 38 , As a result, the first shaft element moves 22 in the direction of the second shaft element 24 so that the shaft elements 22 . 24 approach each other. The miter cut surfaces of the hollow sections 32 . 34 are thus pulled against each other, and the seal 36 is compressed. During contraction, the first shaft member slides 22 on guide pins extending from a stop surface of the second shaft member 24 go out and axially into corresponding channels in the first shaft member 22 extend into it. These guide pins form a guide during tightening.

In 4 the cutting plane lies in the axis of the clamping screw 38 , It is clearly visible how the first shaft element 22 between the thighs 50 . 52 the guide angle 18 . 20 is pulled. In the area of the part 26 of the second shaft member 24 standing near the corner area 28 lies, go these thighs 50 . 52 the guide angle 18 . 20 in one piece into the second shaft element 24 above. Furthermore, it is clearly visible that the hollow profile 32 is provided with a cutout, through which inner walls 54 . 56 of the hollow profile 32 are removed to a certain depth and that allows the part 26 of the second shaft member 24 completely in the hollow profile 32 while pushing in the ends of the thighs 50 . 52 the guide angle 18 . 20 further axially into the hollow profile 32 extend into it. Between them runs the first shaft element 22 within the central channel 44 ,

5 is a perspective view of the corner connector 10 from a further perspective, in which the first shaft element 22 is omitted. This will cause the guide pins 58 . 60 visible to the first shaft element 22 can be plugged, as well as the channel 62 for the implementation of the clamping screw 38 , Clearly visible is also the one-piece design of the guide angle 18 . 20 on the top and bottom (according to the orientation in 5 ) of the elbow 12 with the second shaft element 24 in the corner 28 as well as in adjoining sections of the legs 14 . 16 while the outer ends of the thighs 50 . 52 such as 64 . 66 the guide angle 18 . 20 stand free. In particular, the free legs extend 64 . 66 freely above and below the free end of the second shaft member 24 parallel to this.

6 shows again the corner connector 5 in which the viewing axis is aligned with the major axis of the second leg 16 matches while 7 a section along the line AA in 6 represents. Clearly visible here is the canal 62 for the clamping screw 38 as well as the extended opening 42 in which the head of the clamping screw 38 rests.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19900957 A1 [0003]

Claims (6)

Corner connector ( 10 ) for hollow profile frames, with an angle piece ( 12 ) with two legs ( 14 . 16 ), which are inserted into the end sections of two hollow profiles ( 32 . 34 ) of the frame, characterized in that the angle piece ( 12 ) a first shaft element ( 22 ) and a second shaft element ( 24 ), which are anchored in the respective end sections, which first shaft element ( 22 ) at least a part of a first leg ( 14 ) and which second shaft element ( 24 ) the second leg ( 16 ) as well as a corner area ( 28 ) of the elbow ( 12 ) formed in the axial extension of the first shaft element ( 22 ), wherein the corner connector ( 10 ) Furthermore, a clamping screw ( 38 ) for clamping the two shaft elements ( 22 . 24 ), which extends through the corner area ( 28 ) axially into the first shaft element (FIG. 22 ) extends into it and is screwed into this. Corner connector according to claim 1, characterized in that the two shaft elements ( 22 . 24 ) in the respective end sections by anchor bolts ( 39 ) are anchored, which from the outside through the walls of the end portions in the shaft elements ( 22 . 24 ) are screwed. Corner connector according to one of claims 1 or 2, characterized in that from the second shaft element guide pins ( 58 . 60 ) extending axially through the first shaft element ( 22 ) extend and on which the first shaft member ( 22 ) can slide. Corner connector according to one of the preceding claims, characterized in that the second shaft element ( 24 ) Is L-shaped and one of corner ( 28 ) outgoing part ( 26 ) of the first leg ( 14 ), which axially on the first shaft member ( 22 ) while the remaining part is formed by the first shaft member. Corner connector according to one of the preceding claims, characterized in that that of the second shaft element ( 24 ) formed second leg ( 16 ) of the elbow ( 12 ) has a gradation of its cross section, which serves as a stop for limiting the insertion depth in the hollow profile. Corner connector according to one of the preceding claims, characterized in that on the angle piece ( 12 ) a pair of lateral guide angles ( 18 . 20 ) is mounted in one piece on the second shaft element ( 24 ) are formed and whose legs ( 50 . 52 . 64 . 66 ) Are rails which are parallel to the shaft elements ( 22 . 24 ).

Images