DEVICE FOR NOISE-REDUCED FASTENING OF PIPES OR HOSES

Description

[0001] The invention relates to a device for the vibration- and noise-reduced fastening of pipes or hoses according to the preamble of patent claim 1.

[0002] To secure pipes and hoses, so-called clamps are regularly used. These clamps usually comprise a clamp body made of a thermoplastic or elastomeric plastic or even of metal. The clamp body is often formed from two interconnectable fastening parts which, when assembled, form a passage for receiving the pipe or hose. To reduce vibrations transmitted from the accommodated pipe or hose to the clamp body, it is known to insert an annular rubber insert into the passage of the clamp body to receive the pipe or hose. Such a clamp is described, for example, in WO 2015 / 177181 A1, US 3 370 815 A, DE 10 2008 036563 A1 and EP 1 111 285 A1.

[0003] The previously known solution has proven itself in practice. The object of the present invention is to provide a device for the noise-reduced fastening of pipes or hoses, which enables simplified assembly and whose sound and vibration-reducing properties are further improved. According to the invention, this object is achieved by a device having the features of the characterizing part of patent claim 1.

[0004] The invention provides a device for the vibration- and noise-reducing fastening of pipes or hoses, which enables simplified assembly and whose sound and vibration-reducing properties are further improved. Because the clamp body is formed by a pipe receiving block made of elastic material, which has a cylindrical recess which forms the feedthrough and into which opens an insertion gap (3) made in an upper cover surface of the pipe receiving block, which extends in the axial direction of the recess over the entire upper cover surface, the insertion of a pipe or hose into the feedthrough is possible by simply pushing it through the insertion gap. Due to the elastic material of the pipe receiving block, the sides delimiting the gap give way elastically and then assume their original shape, whereby the pipe or hose is radially fixed in the feedthrough.The open design of the pipe support block in the insertion gap area also allows for a certain degree of decoupling of the pipe or hose being held, thereby improving the sound and vibration-reducing properties. Furthermore, this reduces the pipe's contact surface, thus counteracting the risk of contact corrosion in this area.

[0005] In a further development of the invention, the insertion gap has a trapezoidal cross-section that tapers toward the recess. This facilitates the insertion of a pipe or hose into the feedthrough.

[0006] In one embodiment of the invention, the pipe support block is made of an elastomer material. This ensures high elasticity of the pipe support block, combined with good noise and vibration reduction properties.

[0007] In a further embodiment of the invention, the pipe receiving block is made of an electrically conductive plastic, in particular an intrinsically conductive polymer. This creates an electrically conductive connection between a received pipe and an attachment structure to which the device is attached, thereby preventing static charges in the pipe. Such an electrically conductive connection can alternatively or additionally be achieved by dimensioning the pipe receiving block and the gap height in such a way that direct contact between the received pipe and the attachment structure, in particular with a C-profile, occurs.

[0008] In a further development of the invention, grooves extending in the axial direction are formed radially spaced from one another in the inner surface of the recess. This reduces the contact area between a received pipe and the pipe receiving block, while simultaneously achieving axial ventilation, thus preventing contact corrosion on the received pipe.

[0009] In one embodiment of the invention, the cross-section of the inner surface of the recess describes a circular arc spanning an angle α of between 240° and 320°. This allows for easy insertion of a pipe into the feedthrough, followed by reliable axial fixation.

[0010] According to the invention, two parallel holes are provided on both sides of the recess, through which screws are guided. The screws are screwed into a clamping head for insertion into a C-profile rail on their side facing the insertion gap. This allows for easy installation of the device on a C-profile rail, with the clamping heads being easily inserted into the C-profile rail. The pipe support block can then be fixed in the desired position by tightening the screws.

[0011] Preferably, the clamping head comprises a nut body on which a slide piece is arranged, projecting beyond the nut body on two opposite sides. This results in a design similar to a sliding block.

[0012] In a further embodiment of the invention, the slide piece is provided, at least in some areas, with an elastic layer, preferably an elastomer or rubber layer. This decouples the screws from a C-profile into which the clamping body is inserted.

[0013] In one embodiment of the invention, a plate made of a mechanically stable material, particularly metal or hard plastic, that is less elastic than the material of the pipe support block is arranged on the cover surface of the pipe support block opposite the insertion gap. This plate has two holes aligned with the holes in the pipe support block and through which the two screws are guided. This ensures a uniform introduction of the clamping forces acting on the screws into the pipe support block, thus preventing partial deformation or even damage.

[0014] In a further development of the invention, a C-profile rail is arranged into which the clamping heads connected to the screws are inserted. The slide bodies of the clamping bodies are arranged at an acute angle, preferably transversely to the profile slot in the C-profile rail, and the nut body protrudes through the profile slot. This achieves a reliable connection between the C-profile rail, which can be mounted on an attachment structure, allowing for positional adjustment along the C-profile rail by simply temporarily loosening the screws.

[0015] Further developments and refinements are specified in the remaining subclaims. Embodiments of the invention are illustrated in the drawings and described in detail below. They show: Figure 1 shows a schematic representation of a device for the noise-reduced fastening of pipes or hoses a) in a spatial representation from below; b) in a spatial representation from above; c) in a side view; Figure 2 shows a schematic representation of a device mounted on a C-profile for the noise-reduced fastening of pipes or hoses in a further embodiment in a side view; Figure 3 shows a schematic representation of a device mounted on a C-profile for the noise-reduced fastening of pipes or hoses in a third embodiment a) in a side view; b) in a spatial representation from below; Figure 4 shows the representation of the pipe receiving block of the device from Figure 3 a) in spatial representation from above; b) in spatial representation from below; c) in plan view; d) in section AA; Figure 5 the arrangement of Figure 3 in exploded view.

[0016] The device chosen as an example for the noise-reduced fastening of pipes or hoses according to Figure 1 comprises a pipe receiving block 1 which is essentially designed in the form of a cuboid with rounded side edges and which has a passage in the form of a cylindrical recess 2 into which an insertion gap 3 opens, which is introduced into the upper cover surface 11 of the pipe receiving block 1. The insertion gap 3 has a trapezoidal cross-section which tapers in the direction of the recess 2. The cross-section of the inner circumferential surface of the recess 2 describes a circular arc which, in the exemplary embodiment, spans an angle α of 300°. Grooves 21 which run in the axial direction and are arranged circumferentially parallel to one another at regular radial spacings are introduced into the inner circumferential surface of the recess 2.

[0017] On both sides of the recess 2, a bore 4 for the passage of a screw 5 is provided in the pipe receiving block 1. The lower cover surface 12 opposite the insertion gap 3 has a shoulder 13 on both sides of the recess 2, the height of which corresponds approximately to the height of the screw head 51 of the screws 5. In the exemplary embodiment, the pipe receiving block 1 is made of a thermoplastic elastomer (TPE).

[0018] Arranged on the lower cover surface 12 of the pipe support block 1 is a plate 6 whose outer contour corresponds to the outer contour of the cover surface 12 on which it rests flat. Two bores 61 are drilled into the plate, which are aligned with the bores 4 of the pipe support block 1. In the exemplary embodiment, the plate 6 is designed as a stamped sheet metal part. Alternatively, the plate 6 can also be made of a mechanically stable hard plastic such as polyoxymethylene (POM), polyamide (PA), or polyethylene terephthalate (PET) that is less elastic than the material of the pipe support block 1.

[0019] A screw 5 is guided through each of the aligned bores 4, 61 of the plate 6 and the pipe support block 1, the screw head 51 of which rests against the plate 6 in the area of ​​a shoulder 13 of the upper cover surface 11. A clamping head 7 is screwed onto the screw shaft 52 of each of the two screws 5, which protrudes from the bore 4 on the opposite side.

[0020] In the exemplary embodiment, the clamping head 7 is made of metal and has a nut body 71, on which a slide piece 72 is arranged, projecting beyond the nut body on two opposite sides. Alternatively, the clamping head can also be made of plastic. The slide piece 72 is essentially shaped like a cuboid with rounded transverse sides. In the center, the slide piece 72 has a bore 73 that is aligned with the threaded bore of the nut body 71. In the exemplary embodiment, the slide piece 72 is provided with an elastomer layer.

[0021] In the embodiment according to Figure 2 the pipe receiving block 1 is designed with a reduced height and a flat lower cover surface 21. The plate 6, which in turn rests flat against this cover surface 21, is also designed with a flat surface. A pipe 9 is inserted into the recess 2, the outer diameter of which is slightly larger than the inner diameter of the recess 2. The pipe 9 is thus held in the pipe receiving block 1 in a force-fitting and form-fitting manner. The slide pieces 72 of the clamping heads 7 are pushed into a C-profile rail 8, with the nut bodies 71 protruding through its profile slot 81. At the end, the nut bodies are arranged in an end-side, diameter-enlarged section 41 of the bores 4.

[0022] The slide pieces 72 are aligned in the C-profile rail 8 approximately transversely to the profile slot 81 and are clamped by the screws 5 against the legs 82 of the C-profile rail 8 facing the pipe support block 1, which are thus clamped between the pipe support block 1 and the slide pieces 72. In this exemplary embodiment, the insertion gap 3 is dimensioned such that the pipe 9 rests externally against the legs 82 of the C-profile rail 8, thereby creating an electrically conductive contact between the pipe 9 and the C-profile rail 8.

[0023] In the embodiment according to Figure 3 The insertion gap 3 is larger, which spaced the tube 9 from the C-profile rail 8. Air circulation is possible in the gap formed between the tube 9 and the C-profile rail 8. In this embodiment, the plate 6 has a substantially rectangular recess in the center. This recess serves to reduce weight and material.

Claims

1. Device for noise-reduced fastening of pipes or hoses, comprising a clamp body, which has a passage for receiving a pipe or hose section, wherein the clamp body is formed by a pipe receiving block (1) made of elastic material, which has a cylinder-shaped recess (2), which forms the passage and into which leads an insertion gap (3) introduced into an upper cover surface (11) of the pipe receiving block (1), which extends over the entire upper cover surface (11) in the axial direction of the recess (2), characterised in that two bores (4) are inserted parallel to one another on both sides of the recess (2), through which screws (5) are guided, which are screwed into a clamping head (7) on their side facing the insertion gap (3) for insertion into a C-profile rail (8).

2. Device according to claim 1, characterised in that the insertion gap (3) has a trapezoidal cross-section, which tapers in the direction of the recess (2).

3. Device according to claim 1 or 2, characterised in that the pipe receiving block (1) is made of an elastomer material or of an electrically conductive plastic, in particular an intrinsically conductive polymer.

4. Device according to one of the preceding claims, characterised in that grooves (21) extending in the axial direction are introduced into the inner surface of the recess (2) at a radial distance from one another.

5. Device according to one of the preceding claims, characterised in that the cross-section of the inner surface of the recess (2) describes a circular arc, which spans an angle α of between 240° and 320°.

6. Device according to one of the preceding claims, characterised in that the clamping head (7) has a nut body (71), on which a carriage piece (72) is arranged projecting beyond it on two opposite sides.

7. Device according to claim 6, characterised in that the carriage piece (72) is provided at least in some areas with an elastic layer, preferably an elastomer or rubber layer.

8. Device according to one of the preceding claims, characterised in that on the lower cover surface (12) of the pipe receiving block (1) opposite the insertion gap (3) a plate (6) made of a material which is less elastic than the material of the pipe receiving block, in particular of metal or hard plastic, is arranged, which has two bores (61), which are aligned with the bores (4) of the pipe receiving block (1) and through which the two screws (5) are guided.

9. Device according to one of the preceding claims, characterised in that a C-profile rail (8) is arranged, into which the clamping heads (7) connected to the screws (5) are inserted, wherein the carriage bodies (72) of the clamping bodies (7) are arranged at an acute angle, preferably transversely to the profile slot (82) in the C-profile rail (8) and the nut body (71) projects through the profile slot (81).