Pipe clamp for attaching a pipe to a wall

Abstract

Pipe clamp (1) for fastening a pipe to a wall; with a wall mounting section (2) comprising a fastening means (3) for wall mounting; with two clamping legs (4, 5) each extending in an arc from a first end (4.1, 5.1) to a second end (4.2, 5.2) and connected to one another in an articulated or detachable manner at the second end (4.2, 5.2), which are arranged to encompass the pipe together in an arc and at least one of which comprises the wall mounting section (2); with a connecting device (6) for detachably connecting the two first ends (4.1, 5.1) of the clamping legs (4, 5); wherein the connecting device (6) has a radially inwardly directed bevel (7, 8) at each first end (4.1, 5.1) of the clamping legs (4, 5), and the two bevels (7, 8) are clamped against one another in the circumferential direction by means of a screw connection extending in the circumferential direction characterized in that one of the two bevels (7, 8) has an internal thread (9) and / or a counter element (10) having an internal thread (9) is connected to one of the two bevels (7, 8), the other of the two bevels (7, 8) has a through-bore (11), and in a tightened state of the screw connection, a cap screw (12) with its screw head (20) resting against the other of the two bevels (7, 8) is inserted through the through-bore (11) and screwed into the internal thread (9), and the clamping leg (4, 5), which has the bevel (7, 8) with the through-bore (11) at its first end (4.1, 5.1), has a drive opening (15) in the form of an elongated hole aligned with the through-bore (11), and the screw head (20) has a drive (13) in the form of a through the drive opening (15) through which an internal drive can be actuated; or the two folds (7, 8) have an internal thread (9) and / or a counter element (10) having an internal thread (9) and, in a tightened state of the screw connection, a threaded rod (14) having a drive (13) is screwed into the internal thread (9), the drive (13) being arranged as an external drive between the two folds (7, 8).

Description

[0001] The present invention relates to a pipe clamp for fastening a pipe, in particular a downpipe, for example as a component of a roof drainage system, to a wall, wherein the wall is in particular oriented at least substantially vertically.

[0002] A generic pipe clamp is disclosed in DE 20 2014 000 265 U1. This pipe clamp has a wall mounting section with a fastening means for wall attachment, as well as two clamping legs connected in an articulated manner, the first ends of which can be detached from one another in order to slide the pipe clamp over a pipe, and the second ends of which are connected in an articulated manner. A connecting device with a snap closure is provided for connecting the two first ends of the clamping legs when the clamping legs are pushed over the pipe. The two clamping legs, which are C-shaped in cross-section in an axial section through the pipe, are lined internally with elastic pressure elements that are sufficiently flexible to lock the snap connection.

[0003] A disadvantage of this design is that there must be sufficient play between the pipe clamp and the pipe to achieve the desired locking of the snap connection. Since the elasticity of the pressure elements is limited in practice and the outer diameter of the pipes to be fastened with the pipe clamp can vary, the pipe clamp often cannot achieve a sufficient frictional connection between the pipe clamp or the pressure elements on the outside of the pipe to absorb the weight of the pipe. This means that there is a risk that a corresponding downpipe will become detached at the upper end, for example from a gutter nozzle, because it can slide downwards inside the pipe clamp. This means that the downpipe must usually be reconnected to the nozzle at a great height.

[0004] Further pipe clamps for fastening a pipe, including pipes other than a downpipe, as particularly concerned with the present invention, are described in EP 2 894 385 A1, DE 200 13 752 U1, DE 102 15 647 A1, DE 101 23 924 B4, DE 100 39 008 C2, EP 0 713 039 A1, DE 198 42 739 C1, CN 105570544 A, DE 20 2012 103 440 U1, DE 10 2017 124 068 A1, DE 10 2017 113 903 A1, DE 10 2015 112 963 A1, DE 10 2012 106 256 B4, DE 10 2008 047 787 B4 and DE 10 2004 032 053 B4, wherein all embodiments have in common that they have either ratchet or snap closures with the disadvantages mentioned or radially outwardly bent edges which are locked together and which, on the one hand, are not particularly visually appealing and, on the other hand, are collection points for dirt, and have proven in practice to be impact points which are prone to injury.

[0005] DE 20 2017 107 712 U1 discloses a pipe clamp with a joint, comprising an upper clamp part and a lower clamp part, which are connected to each other via the joint. The clamp parts are formed by insulating bodies into which clamping brackets are embedded, which have radially outwardly beveled edges.

[0006] EP 2 913 574 A1 discloses a pipe clamp with two separate C-shaped clamp parts that can be connected to each other in a form-fitting manner.

[0007] GB 1 499 653 A discloses a clamping device for pipes with two parts screwed together.

[0008] WO 2017 / 168034 A1 discloses a clamping device for pipes with two clamping parts that have radially inwardly directed bends.

[0009] Another pipe clamp with radially outwardly bevelled edges is disclosed in EP 0 115 246 A1.

[0010] DE 20 2015 102 398 U1 describes shells that are screwed together and pivotably connected in a part-circular manner and form cooling elements of a plasticizing cylinder.

[0011] DE 10 2014 112 020 A1 discloses a fastening element for fixing a pipeline with thermal insulation elements.

[0012] For further information on the state of the art, please refer to DE 203 80 318 U1 and CH 436 876 A.

[0013] The present invention is based on the object of providing a pipe clamp for attaching a pipe, in particular a downpipe, for example, for roof drainage, to a wall, in particular an at least substantially vertical wall, which avoids the aforementioned disadvantages. The pipe clamp should be characterized by an attractive design and secure pipe support.

[0014] The object of the invention is achieved by a pipe clamp having the features of claim 1. Advantageous and particularly useful embodiments of the invention are specified in the dependent claims.

[0015] The pipe clamp according to the invention for fastening a pipe, in particular a downpipe, for example a rainwater downpipe, to a wall has at least one wall-mounting section comprising a fastening means for wall fastening. In a simple case, the fastening means can be a mandrel or steel nail, or even a bore. According to another embodiment, the fastening means comprises, for example, a thread, in particular an internal thread, so that the pipe clamp can be fastened to the wall with a threaded rod or screw screwed into the internal thread.

[0016] The pipe clamp according to the invention has two clamping legs which each extend in an arc from a first end to a second end and are connected to one another in an articulated or detachable manner at the second end, which clamping legs are arranged to encompass the pipe in a common arc and at least one of which comprises the wall mounting section.

[0017] According to the invention, a connecting device is provided for releasably connecting the two first ends of the clamping legs.

[0018] According to the invention, the connecting device has a radially inwardly directed bevel at each first end of the clamping legs, and the two bevels are clamped against each other in the circumferential direction by means of a screw connection extending in the circumferential direction, at least when the screw connection is tightened and, in particular, a pipe in the space enclosed by the clamping legs, here also referred to as the pipe space, is advantageously held in a frictionally engaged manner by the clamping legs.

[0019] The screw connection allows for flexible adjustment of the distance between the two bends to suit the respective application and thus adjustment of the inner diameter of the clamping legs connected to each other, so that pipes, especially downpipes, can be held securely in place with friction, regardless of a varying outer diameter.

[0020] In this case, the circumferential direction means the circumferential direction along the pipe, i.e. the circumferential direction of the pipe space enclosed by the clamping legs when fastened to each other at both ends.

[0021] According to one embodiment of the invention, one of the two folds has an internal thread at the first end and / or a counter element having an internal thread is connected to one of the two folds, and the other of the two folds has a through-hole. When the screw connection is tightened, a cap screw is inserted with its screw head directly or indirectly resting against the other of the two folds through the through-hole and screwed into the internal thread. A screw shaft thus extends from its threaded free end, which is screwed into the internal thread, through the through-hole to the screw head positioned on the side of the fold having the through-hole facing away from the internal thread.

[0022] According to another embodiment, the two folds have an internal thread and / or a counter element having an internal thread. Thus, an internal thread can be provided in each of the folds and / or a counter element having an internal thread can be connected to each of the folds. Alternatively, only one fold can have an internal thread and the counter element with the internal thread is connected to the other fold. When the screw connection is tightened, a threaded rod having a drive is screwed into the internal thread to form the screw connection. The drive is designed as an external drive and is arranged between the two folds. Thus, the external drive can be designed as a hexagon, for example, and can therefore be easily tightened with an open-end wrench that is inserted between the two folds.

[0023] In the version with an internal thread and a cap screw, the clamping leg, which has the bevel with the through-hole at its first end, has a drive opening in the form of an elongated hole aligned with the through-hole, and the screw head has a drive in the form of an internal drive that can be actuated through the drive opening. Thus, for example, an Allen key or a hexalobular / star key can be inserted from the outside through the drive opening into the internal drive to tighten the screw connection.

[0024] The clamping legs preferably have a C-shape, with radially inwardly directed folded edges extending along their circumference, between which elastic pressure elements, in particular made of dimensionally stable rubber, are arranged. These pressure elements protrude radially inward beyond the folded edges and the chamfers for frictional engagement with the pipe. The C-shape thus results in an axial section through the pipe or through the pipe space. A single pressure element can be provided, extending along both clamping legs, or multiple pressure elements can be provided, in particular one pressure element per clamping leg.

[0025] The pressure elements can advantageously each extend from the second end to the first end and have end-face recesses in the region of the first ends, in which a part of the screw connection, in particular a counter element and a screw head, or a counter element, is received. Alternatively, the pressure elements end in the circumferential direction at a sufficient distance from the bevels to avoid collision with the connecting device or the screw connection.

[0026] The clamping legs can preferably be connected at their second end with a hinge, so that they are held together captively. According to another embodiment, however, a detachable connecting device can also be provided here, which is then particularly advantageously designed to correspond to the connecting device at the first ends, in particular to be identical to it.

[0027] In particular, the two clamping legs each extend over more than 160° in the circumferential direction.

[0028] Different diameter tolerances of the pipe are preferably compensated by a distance remaining in the circumferential direction between the bends when the screw connection is tightened.

[0029] The invention will be described below using exemplary embodiments and the figures.

[0030] They show: Fig. 1 a three-dimensional view of a pipe clamp designed according to the invention; Fig. 2 the pipe clamp from the Fig. 1 in an axial schematic plan view; Fig. 3 an enlarged section with the connecting device at the first ends of the clamping legs; Fig. 4 a different connection device in one of the Fig. 3 corresponding section.

[0031] In the Fig. 1 shows a three-dimensional plan view of a pipe clamp 1 according to the invention. The pipe clamp 1 has a wall mounting section 2 with a fastening means 3 (see the Fig. 2) for wall mounting. How to Fig. As can be seen in Figure 2, the fastening means 3 is designed as an internal thread arranged in a hexagonal pin of the pipe clamp 1. However, other fastening means are also possible.

[0032] The pipe clamp 1 has two clamping legs 4, 5, which are arranged to encompass the pipe in a common arcuate manner and of which at least one, here the first clamping leg 4, encompasses the wall mounting section 2.

[0033] Each clamping leg 4, 5 has a first end 4.1, 5.1 and a second end 4.2, 5.2. At their second ends 4.2, 5.2, the two clamping legs 4, 5 are connected to each other in an articulated manner, here by means of a hinge 21. Thus, the clamping legs 4, 5 can be folded apart to be slid over a pipe (not shown in detail here). Once slid over the pipe, they can be folded back together so that they rest on the outside of the pipe surface and are connected at their first ends 4.1, 5.1 to a connecting device 6.

[0034] The clamping legs 4, 5 are, as can be seen from the Fig. 1, they are C-shaped and each have two folded edges 16, 17. In the axial direction of the pipe (not shown in detail), the folded edges 16, 17 are arranged at opposite ends of the clamping legs 4, 5 in order to form the C-shape in the cross-section of the clamping legs 4, 5. A pressure element 18 is inserted into each of the C-shape of the clamping legs 4, 5. The pressure elements 18 protrude radially inwards beyond the folded edges 16, 17 and are made of an elastic material, for example rubber. When the connecting device 6 is closed, the pressure elements 18 are pressed with their radially inner surface onto the outside of the pipe, so that a frictional connection is created which prevents the pipe from slipping within the pipe clamp 1.

[0035] Inventive embodiments of the connecting device 6 are shown in the Fig. 3 and Fig. 4. Thus, the two clamping legs 4, 5 each have a radially inwardly directed bevel 7, 8 at their first ends 4.1, 5.1, i.e., directed toward the pipe space or the pipe itself. The bevels 7, 8 are clamped to one another in the circumferential direction with a screw connection, whereby even in the clamped state, a distance d advantageously remains between the bevels 7, 8.

[0036] In the embodiment according to the Fig. 3, the bevel 8 has a through-hole 11, and a counter element 10 provided with an internal thread 9 is arranged on the bevel 7. For example, the counter element 10 is integrally connected to the bevel 7 or pressed therewith. A cap screw 12 is inserted through the through-hole 11 so that its screw head 20 rests at least indirectly against the bevel 8 and its external thread is screwed into the internal thread 9 of the other bevel 7.

[0037] The screw head 20 has a drive 13 in the form of an internal drive, which can be driven through a drive opening 15 in the area of ​​the second end 5.2 of the clamping leg 5, see also the Fig. 1.

[0038] The design according to the Fig. 4 differs from the design according to the Fig. 3 in that both bevels 7, 8 are each provided with an internal thread 9 or with a counter element 10 having an internal thread 9. A threaded rod 14 with a drive 13 in the form of an external drive, which is arranged between the bevels 7, 8, is screwed into the internal thread 9. This eliminates the need for a drive opening in the clamping legs 4, 5 because the drive 13 can be actuated radially from the outside via the gap between the bevels 7, 8.

[0039] To prevent a collision of the connecting device 6 with the pressure elements 18, these each have a recess 19 at their ends associated with the first ends 4.1, 5.1. These recesses 19 extend, for example, only over a central region of the pressure elements 18, relative to the axial direction of the pipe or pipe space. Alternatively, the pressure elements 18 end at a corresponding distance in the circumferential direction in front of the bevels 7, 8. List of reference symbols 1 pipe clamp 2 Wall mounting section 3 fasteners 4 clamping legs 5 clamping legs 4.1, 5.1 first end 4.2, 5.2 second end 6 Connecting device 7 Bending 8 Bending 9 internal threads 10 Counter element 11 Through hole 12 cap screw 13 Drive 14 threaded rod 15 Drive opening 16 Edge 17 Edge 18 Pressure element 19 Recess 20 screw head 21 Hinge d distance

Claims

[1] Pipe clamp (1) for fastening a pipe to a wall; with a wall mounting section (2) comprising a fastening means (3) for wall mounting; with two clamping legs (4, 5) each extending in an arc from a first end (4.1, 5.1) to a second end (4.2, 5.2) and connected to one another in an articulated or detachable manner at the second end (4.2, 5.2), which are arranged to encompass the pipe together in an arc and at least one of which comprises the wall mounting section (2); with a connecting device (6) for detachably connecting the two first ends (4.1, 5.1) of the clamping legs (4, 5); wherein the connecting device (6) has a radially inwardly directed bevel (7, 8) at each first end (4.1, 5.1) of the clamping legs (4, 5), and the two bevels (7, 8) are clamped against one another in the circumferential direction by means of a screw connection extending in the circumferential direction characterized by , that one of the two bevels (7, 8) has an internal thread (9) and / or a counter element (10) having an internal thread (9) is connected to one of the two bevels (7, 8), the other of the two bevels (7, 8) has a through-bore (11), and in a tightened state of the screw connection, a cap screw (12) with its screw head (20) resting against the other of the two bevels (7, 8) is inserted through the through-bore (11) and screwed into the internal thread (9), and the clamping leg (4, 5), which has the bevel (7, 8) with the through-bore (11) at its first end (4.1, 5.1), has a drive opening (15) in the form of an elongated hole aligned with the through-bore (11), and the screw head (20) has a drive (13) in the form of a through the drive opening (15) through which an internal drive can be actuated; or the two folds (7, 8) have an internal thread (9) and / or a counter element (10) having an internal thread (9) and, in a tightened state of the screw connection, a threaded rod (14) having a drive (13) is screwed into the internal thread (9), the drive (13) being arranged as an external drive between the two folds (7, 8). [2] Pipe clamp (1) according to claim 1, characterized by that the clamping legs (4, 5) have a C-shape, with radially inwardly directed edges (16, 17) extending along their circumference, between which one or more elastic pressure elements (18), in particular made of dimensionally stable rubber, are arranged, which project inwards in the radial direction beyond the edges (16, 17) and the edges (7, 8) for frictional engagement with the pipe. [3] Pipe clamp (1) according to claim 2, characterized bythat the pressure elements (18) each extend from the second end (4.2, 5.2) to the first end (4.1, 5.1) and have front-side recesses (19) in the region of the first ends (4.1, 5.1), in each of which a part of the screw connection, in particular the counter element(s) (10) or the screw head (20), is received. [4] Pipe clamp (1) according to one of claims 1 to 3, characterized by that the clamping legs (4, 5) are connected at their second ends (4.2, 5.2) with a hinge (21). [5] Pipe clamp (1) according to one of claims 1 to 4, characterized by that the two clamping legs (4, 5) each extend over more than 160° in the circumferential direction. [6] Pipe clamp (1) according to one of claims 1 to 5, characterized by that in the tightened state of the screw connection, a distance (d) is provided between the bends (7, 8) in the circumferential direction.

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