Eaves edge bender

Abstract

Eaves edge bender (1), in particular for bending sheet metal on a roof skin of a building, comprising a support cheek (2) with a support lever (3) and a bending cheek (4) with a bending lever (5) which are connected to each other by a swivel joint (6), characterized in that the swivel joint (6) is elastically designed.

Description

[0001] The invention relates to an eaves edge bender according to the preamble of claim 1.

[0002] In the following description and specifications, the term "eaves bender" also refers to a "ridge edge bender." Both terms can be used interchangeably and / or synonymously.

[0003] On building roofs, an eaves edge is formed at each eave to direct rainwater flowing down a sloping roof surface directly into a gutter. Sheet metal panels, which may form part of the actual roof covering, are bent, folded, or folded accordingly in the eaves area to create a clean drainage edge, protect underlying masonry from moisture, and / or provide a fold to hold the gutter in place.

[0004] Such a sheet metal panel can also be referred to as a standing seam panel or standing seam profile. These terms can be used interchangeably and / or synonymously.

[0005] Pliers-like tools, also known as eaves benders, eaves edgers, or similar names, are used for this purpose. They typically comprise a support jaw with a support lever and a bending jaw with a bending lever. The support jaw and bending jaw are connected by a mechanical swivel joint. The bending jaw is placed against or on a section of sheet metal at the free end, while the support jaw rests on a section of sheet metal spaced apart from it. The user manually fixes or presses the support jaw onto the sheet metal using the support lever, while simultaneously using the bending lever, which engages the bending jaw, the free end of the sheet metal is bent, folded, or folded at a desired angle, for example, 120°, to create a downward-facing edge flashing at the eaves of the roof and, for instance, to serve as protection against rainwater.For precise positioning of the device, a groove-like recess can be formed on the bending jaw to receive the free edge of the sheet metal to be bent. Such devices are known, among others, from documents DE 90 04 801 U1, DE 203 09 625 U1 and DE 298 07 149 U1.

[0006] The support jaw and the bending jaw can each be detachably mounted on a holding jaw to allow their respective position and orientation to be adjusted to the required installation situation. The support lever and the bending lever, in turn, engage with each of the two holding jaws. Such an eaves edge bender is distributed by MASC Bauartikel Vertriebs GmbH, An der Alten Ziegelei 12, D-89269 Vöhringen, under the name "Segment Eaves Bender." An explanatory video is available at https: / / masc-gmbh.de / product / segment-traufbieger / .

[0007] Based on this state of the art, the expert is faced with the task of improving the handling of the eaves edge bender.

[0008] According to the invention, this problem is solved by the features of claim 1.

[0009] The core concept of the invention is that the pivot joint is designed elastically. This means that the support flange and the bending flange are not rigidly connected or hinged to each other, but rather these two components can change their arrangement relative to one another. The elasticity of the pivot joint itself can be designed in any technically feasible way, but preferably as described below. For example, the support flange and the bending flange can be connected by a component with sufficient elasticity, such as coil springs, a connecting element made of rubber or another permanently elastic material, or the like.

[0010] The advantage of the invention lies in the fact that the elastic design of the swivel joint allows the eaves bender to be directly adapted to different sheets of varying thicknesses. With a mechanically rigid connection, the support jaw and the bending jaw no longer maintain completely flat contact with the sheet being formed during the bending process, since the rigid swivel joint, especially when the sheet is bent by more than 90°, is only designed for a specific sheet thickness. If a thicker sheet is bent, there is no longer sufficient space between the support jaw and the bending jaw for the sheet material.

[0011] This is avoided by the elastic design of the swivel joint, as the support cheek and the bending cheek can move relative to each other in order to accommodate the sheet metal to be bent, and in particular thicker sheet metal, between them.

[0012] It is understood that the eaves edge bender and its components consist essentially of metal, preferably weather-resistant and / or protected, for example, by a suitable coating. The eaves edge bender possesses the necessary mechanical strength and stability to deform sheet metal and / or other materials used in roofing and sheet metal work without damage. Furthermore, it is understood that not only sheet metal can be processed with the eaves edge bender, but essentially any material that is formed into sheet metal panels. In addition to roofing and sheet metal work, the eaves edge bender can also be used in all other areas of technology.

[0013] Furthermore, it is evident that the eaves edge bender according to the invention can be used to create virtually any angle in a sheet metal panel or standing seam profile. In particular, sheets of varying thicknesses can be processed. For example, water seams for protection against rising damp, any angle for eaves and flashing, transverse seams, vertical panel connections, ridge and hip connections, and the like can be formed. The device makes it possible to produce both eaves edges and ridge edges in a single sheet metal panel or standing seam profile. Thus, two different tools are no longer required.

[0014] The dependent claims each represent advantageous embodiments of the invention.

[0015] In a first embodiment, the elastic pivot joint is formed by one or more webbing straps. These webbing straps are designed, for example, like the tensioning straps used in a lashing strap for securing cargo in the cargo area of ​​a truck or a seat belt in vehicles, preferably made of plastic that has sufficient tensile strength, weather resistance, and resistance to abrasion or mechanical damage. To attach the plastic webbing straps to the metallic components of the eaves bender, the straps can, for example, be clamped between movable clamping jaws, such as on the support and bending jaws, and / or they can be screwed in place.The elastic straps allow, for example, the support jaw to move or shift relative to the bending jaw along the surface of the sheet metal to be bent, if, due to a thicker sheet metal thickness, the bent area of ​​the sheet metal protrudes more than the bent area of ​​a thinner sheet metal.

[0016] In a further embodiment, a groove for receiving a sheet metal part is formed on the bending jaw and / or the support jaw. For example, the bending jaw is hooked onto a free edge of the sheet metal part to be bent using the groove, and the bending jaw and support jaw lie essentially flat against the sheet metal. The user then manually fixes the support jaw with the support lever and, using the bending jaw, which is actuated by the associated bending lever, bends or folds a free end section of the sheet metal at the desired angle. During this process, the bending lever is pivoted away from the support lever. Alternatively, the support jaw, whose height or width differs from that of the bending jaw and is particularly taller, can be hooked onto the free end of a sheet metal part, or the sheet metal part can be inserted into this deeper groove.For example, the bending jaw is then manually fixed to a workbench using the bending lever, and the support jaw with the inserted sheet metal section is actuated with the support lever, i.e., swung away from the bending lever. This allows a larger sheet metal section to be bent as a preparatory step for installing the sheet metal.

[0017] Furthermore, it is proposed that the support jaw and the bending jaw are each arranged on a holding jaw, with the support lever and the bending lever each engaging the holding jaws. Thus, for example, the mechanical stability of the eaves bender can be improved and uneven force transmission to the sheet metal being formed can be avoided by a design of the support lever and bending lever as described below. Likewise, the support jaw and the bending jaw can be adapted to specific requirements.

[0018] Preferably, the support jaw and / or the bending jaw are detachably and / or their arrangement relative to the holding jaws can be changed. This allows, for example, the support jaw and the bending jaw to be interchanged. Furthermore, jaws of different widths can be mounted for processing wider or narrower sheets. Jaws with different groove widths and / or groove depths can be mounted to, for example, process sheets of different thicknesses and to engage or insert them positively into the grooves. The detachable fastening of the jaws to the holding jaws is achieved, for example, with screws. Alternatively or additionally, the jaws can also be mounted on the holding jaws so that they are slidably mounted along the longitudinal extent of the respective levers relative to the corresponding holding jaws.For example, corresponding elongated holes are formed in the cheeks to allow the cheeks to be screwed in different positions relative to the retaining jaws.

[0019] For the design of the levers used to actuate the jaws, it is proposed that the support lever and / or the bending lever each be U-shaped. The two legs of the two essentially U-shaped brackets are preferably welded and / or bolted to the respective retaining jaws. In principle, the brackets can also be attached directly to the two jaws, preferably detachably, in particular by bolting. This allows the packed size of the eaves bender to be significantly reduced when not in use.

[0020] To further reduce the packed dimensions, the retaining jaw of the support cheek, viewed along the longitudinal axis of the support cheek, can preferably be arranged within the U-shaped bending lever when not in use. This means that the retaining jaw of the support cheek is dimensioned so short that it can be positioned between the two legs of the U-shaped bending lever, or rather, inserted between these legs. Thus, when not in use, the two cheeks and the two brackets can lie directly against each other, and the overall height is reduced when viewed from the side.

[0021] To facilitate the installation of a sheet metal panel on a roof eave where, for example, a gutter is already present, the bending lever is angled. This allows the eaves edge bender to bend a sheet metal panel, for example, by 120° using the bending jaw and lever. The angled bending lever prevents it from contacting the existing gutter, which would prevent the desired bending angle from being achieved. In principle, only the support lever or both levers can be angled. It goes without saying that the angles are designed so that, for example, the bending lever does not contact the gutter.

[0022] To increase the mechanical stability of the eaves bender, the support beam and / or the bending beam are reinforced. This reinforcement is, for example, designed as one or more webs that extend at least partially around the support beam to prevent bending. This is particularly advantageous for a large support beam with a deep groove or pocket for accommodating a large sheet metal section. Similarly, one or more web-like reinforcements can also be arranged on the back sides of the beams, where they do not contact the sheet metal.

[0023] It is obvious to a specialist that, in principle, the two terms bending jaw / bench lever and support jaw / support lever can be interchanged. This means that one of the two jaws serves as the support jaw and the other as the bending jaw. Furthermore, the eaves bender can be used to create any bends, folds, or similar features on a sheet metal part, such as grooves, folds, pockets, or the like.

[0024] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawing. The figures show: Fig. 1. A perspective view of an eaves bender, Fig. 2 a eaves edge bender in perspective view with reinforcements and Fig. 3. A perspective view of an eaves edge bender with an elastic swivel joint.

[0025] In the purely schematic and not to scale drawings Fig. The reference symbols 1 to 3 refer to the same components.

[0026] In the Fig. Figure 1 shows a perspective view of an eaves edge bender. It comprises a support jaw 2 and a bending jaw 4, with each jaw 2, 4 having a support lever 3, preferably curved or U-shaped, and a bending lever 5 with two legs. The two jaws 2, 4 are rotatably connected relative to each other via a pivot joint 6.

[0027] The two cheeks 2, 4 are each detachably attached to a retaining jaw 9, 10, for example by means of a screw connection 11. The support cheek 2 and the bending cheek 4 can be interchanged, for example, or replaced with other cheeks, such as those that are taller and / or wider or shorter and narrower. Likewise, the position of the cheeks 2, 4 relative to the retaining jaws 9, 10 can be varied, for example, in the longitudinal direction of the levers 3, 5, depending on the specific assembly requirements. This is achieved, for example, by means of elongated holes in the cheeks 2, 4.

[0028] The eaves edge bender 1 in Fig. 2 has essentially the same structure as the eaves edge bender 1 in Fig. 1. However, here the support flange 2 is significantly larger and is doubled to form a groove 8 or pocket, in which a section of sheet metal to be bent or folded, for example at the eaves of a roof, can be received. Thus, a large sheet metal section can be bent relative to another sheet metal section that rests against the bending flange 4.

[0029] To prevent deformation of the support flange 2, it is equipped with reinforcements 12, for example in the form of webs, which at least partially encircle the double-layered support flange 2. In principle, such reinforcements 12 can also be provided on the bending flange 4. Furthermore, it can be seen that a groove 8, pocket, or the like can also be formed on the bending flange 4 to accommodate, for example, a free end section of a sheet metal to be bent at the eaves of a roof. Subsequently, the support flange 2 is placed on the sheet metal and fixed by means of the support lever 3. The bending flange 4 is then pivoted relative to the support flange 2 using the bending lever 5 to bend the sheet metal, for example by 120°, thus preventing, among other things, the ingress of moisture at the eaves.

[0030] Furthermore, it is from the Fig. 1 and Fig. As can be seen in Figure 2, the retaining jaw 9 of the support bracket 2 is designed to be so short that, when the eaves edge bender 1 is not in use, it can be arranged between the two legs of the essentially U-shaped bending lever 5. This allows for space-saving storage and / or transport. The two levers 3, 5 can also be designed to be detachable from the retaining jaws 9, 10. Preferably, the levers 3, 5 are welded and / or bolted to the retaining jaws 9, 10. Furthermore, the bending lever 5 can preferably be cranked to prevent it from contacting a rain gutter already mounted on a roof eave when bending the sheet metal. Both levers 9, 10 or only the support lever 9 can also be cranked.

[0031] Furthermore, it is evident that the eaves edge bender 1 is essentially made of metal in order to provide sufficient strength and stability. All components can either be permanently connected to one another, for example by welding, or detachably, for example by screwing.

[0032] Finally, in Fig.Figure 3 illustrates the design of the mechanical swivel joint 6. This joint is not rigidly designed, for example, with an axis that rotatably connects the two cheeks 2, 4 or the two holding jaws 9, 10. Rather, the swivel joint 6 is designed in the form of one or more straps 7, which possess a certain degree of elasticity and flexibility. The straps 7 are designed, for example, according to the tensioning straps used for load securing or seat belts in vehicles and are made of plastic. This allows the distance between the support cheek 2 and the bending cheek 4 to change, for example, to process sheets of different thicknesses without material buildup occurring between the support cheek 2 and the bending cheek 4 due to the sheet bending. These two components can also shift slightly relative to each other along the sheet being formed, for example, to compensate for unevenness in the sheet. Reference sign 1 eaves edge bender 2 Support cheek 3 support levers 4 Bending cheek 5 Bending levers 6 Swivel joint 7 webbing 8 grooves on 4 9 retaining jaws for 2 10 retaining jaws for 4 11 Screw connection 12 reinforcement at 2 QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 90 04 801 U1

[0005] DE 203 09 625 U1

[0005] DE 298 07 149 U1

[0005]

Claims

[1] Eaves edge bender (1), in particular for bending sheet metal on a roof skin of a building, comprising a support cheek (2) with a support lever (3) and a bending cheek (4) with a bending lever (5) which are connected to each other by a pivot joint (6), characterized by , that the pivot joint (6) is elastically designed. [2] Eaves edge bender (1) according to claim 1, characterized by that the pivot joint (6) is formed by one or more straps (7). [3] Eaves edge bender (1) according to claim 1 or 2, characterized by , that a groove (8) for receiving a sheet metal part is formed on the bending cheek (2) and / or the support cheek (4). [4] Eaves edge bender (1) according to one of claims 1 to 3, characterized by , that the support jaw (2) and the bending jaw (4) are each arranged on a holding jaw (9, 10), wherein the support lever (3) and the bending lever (5) each engage the holding jaws (9, 10). [5] Eaves edge bender (1) according to claim 4, characterized by , that the support jaw (2) and / or the bending jaw (4) can each be detachably and / or in their arrangements relative to it can be changed on the retaining jaws (9, 10). [6] Eaves edge bender (1) according to claim 5, characterized by , that the support lever (3) and / or the bending lever (5) are each designed in a bow-like shape. [7] Eaves edge bender (1) according to claim 6, characterized by , that when not in use the retaining jaw (9) of the support cheek (2) can be arranged within the bow-like bending lever (5) in the longitudinal extension of the support cheek (2). [8] Eaves edge bender (1) according to any one of claims 1 to 7, characterized by , that the bending lever (5) is designed with a crank. [9] Eaves edge bender (1) according to any one of claims 1 to 8, characterized by that the support cheek (2) and / or the bending cheek (4) are equipped with a reinforcement.

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