RU2788883C1 - Clamping unit with thermal protection device - Google Patents

Abstract

FIELD: clamping units and protection devices.

SUBSTANCE: invention relates to clamping unit (20) comprising a clamp (14) with a clamping band (22) and a clamping device (24) for clamping the clamping band (22), and a thermal protection device (2) comprising a body (1) and at least one insulating layer (30), wherein the casing (1) has a wall (6) on axial end surfaces, which is divided into parts (8, 10) and extends radially inwards, where at least one insulating layer (30) is designed to be installed between the walls (6) of the casing (1). The clamp (14) is designed to encompass, at least in parts, the casing (1) and/or at least one insulating layer (30) of the thermal protection device (2), whereby the thermal protection device (2) is connected to the clamp (14) via a forced interlock, whereby the at least one part (10) of the casing (1) is designed to bend to form a forced interlocking connection with the clamp (14). At least one part of the enclosure wall is made longer than the other part of the wall, whereby the elongated part is made with the possibility of bending along a line to form a bendable retention tab. The invention also relates to a thermal protection device (2).

EFFECT: invention provides for simplifying the connection assembly.

10 cl, 20 dwg

Description

The invention relates to a clamping assembly comprising a clamp having a clamping tape and a clamping device for clamping the clamping tape, and a heat-shielding device containing a housing and at least one insulating insert, the housing having a wall on the axial end surfaces, which is divided into parts and which passes radially inward, wherein said at least one insulating insert can be placed between the walls of the housing. In addition, the invention relates to a heat shield device for the clamping unit.

Clamps are used in various fields of technology to connect hoses or pipes. In particular, clips can be used to secure hoses or pipes to their respective supports and hence prevent fluid from escaping. Such a fluid may be, for example, a heating fluid or a cooling fluid.

In particular, when using metal clamps and connectors, a large amount of heat can be released from the fluid to the environment or nearby components. As a result of uncontrolled heat losses, the efficiency of systems can be reduced.

In addition, due to the high temperature of the fluid, the clip can get very hot and therefore can be a potential hazard to adjacent components that are not heat resistant.

Typically, the installation of a heat shield on such clamps and connections is carried out after the corresponding clamps have been assembled. Thermal protection can be installed at the junction of two pipes in a simple way. Placing the heat shield on the clips can be difficult due to the variety of shapes they have.

Thus, it is an object of the invention to provide a clamping assembly having a thermal protection device which has less assembly complexity.

The main features of the invention are set forth in the distinctive part of paragraphs 1 and 11 of the claims. Claims 2-10 of the claims refer to embodiments.

The invention relates to a clamping assembly comprising a clamp having a clamping band and a clamping device for clamping the clamping band, and a thermal protection device.

The heat protection device has a housing and at least one insulating gasket or insulating layer. On the axial end surfaces, the housing has a wall which is divided into parts and which extends radially inwards. In this case, the housing can be made annular by stamping, at least partially, and made essentially closed from the outside. From the inside, the housing can be made open.

At least one insulating insert or insulating layer can be located between the housing walls. The clip is made with the possibility of covering the body and/or at least one insulating layer of the heat-shielding device at least in certain areas, and the heat-shielding device is made with the possibility of connection with the clip.

The invention also relates to a heat protection device for enclosing the clamp, at least in certain areas. The heat-shielding device has a body that extends along the circumference and has two walls that are made to extend in the radial direction. In addition, the thermal protection device has at least one insulating layer that can be placed in the housing, and said at least one insulating layer can be placed in the housing directly or through at least one spacer element.

The body of the thermal protection device can preferably be made of sheet material, for example by stamping and bending. In particular, the housing may comprise a metal or a heat-resistant plastic material. The housing has a peripheral wall and two walls that extend from the peripheral wall in the radial direction. In the assembled state of the heat-shielding device, the housing forms a U-shaped profile, closed from the outside by a peripheral wall. On the open side of the housing, one or more insulating layers may be placed in a U-profile or between the walls of the housing. Owing to the U-profile, a housing receiving region is formed which is delimited in certain areas by walls and a peripheral wall.

The body walls are divided into parts, which can be separated from each other by recesses. In this example, the recesses or parts are formed in such a way that the body can be arranged in a circle around the clip. In particular, the parts may have a shape that becomes narrower as the distance from the peripheral wall increases, so that the body may correspond to a substantially circular clamp on the periphery.

Preferably, the length of the walls allows the placement of one or more insulating layers and a clip. Since the walls are of sufficient length, compression of the at least one insulating layer can be avoided and consequently the reduction of the insulating effect can be avoided. One or more wall parts can be made longer to provide connection to the clamp by means of elongated parts curved at the end. The clip may preferably be installed as the last component or layer in the open housing profile and may be closed in certain areas by elongated bendable flaps or parts.

Alternatively or additionally, the axial extent of the clip may substantially correspond to the axial extent of the housing receiving area. In this case, the clip can be pressed into the body as a closing part of the receiving area or connected to the body of the heat-shielding device by means of locking connections by positive locking.

The insulating layer may, for example, contain an intumescent material. Preferably, said at least one insulating layer can perform a flame retardant function. To this end, said at least one insulating layer may have the lowest possible thermal conductivity. The insulating layer may be in the form of a mineral fiber mat or in the form of a microporous material insulation.

Said at least one insulating layer may be bonded to the body by positive interlocking or by interaction with the material such that the thermal protection device may be used in the clamping assembly almost as an integral component.

When using a heat shield using a clamp, a certain amount of heat can remain in the system or be removed from the system. Thus, the thermal protection device can act as a bidirectional thermal insulation. In particular, the environment adjacent to the clip can be protected from high or low temperatures of the clip, while the danger of damage or the risk of fire can also be prevented.

Such a heat-shielding device can be made in one piece with another clamp and made in the form of a single clamp assembly. Alternatively or additionally, the thermal protection device may be retrofitted to existing or prefabricated clamps. To do this, the body of the heat shield can be guided around the circumference around the installed clamp and attached at the end to the closing part of the heat shield. The closing part can be of any shape, as long as the heat shield can be fixed on the clip evenly around the circumference.

In this case, the shape and dimensions of the body can be adapted to different clamps and/or can be universally adapted to a large number of clamps. For example, the heat shield device can be of adjustable length, whereby the heat shield device can be provided with clips of various sizes.

With an integral configuration of the clamp assembly, the complexity of assembling the clamp and the heat shield can be reduced. In particular, thanks to this embodiment of the heat shield, existing clips and connectors can also be modified.

According to a preferred embodiment, the thermal protection device is configured to be connected to the clamp by engagement with the material or by positive locking. For example, the heat shield device may have flaps that are located on the housing and can be bent around the clip. Thus, a positive lock connection can be formed between the clip and the body of the heat shield. In addition, the body of the heat shield may be at least partially shaped to form a locking connection with a clip part, such as, for example, a clip band.

Alternatively or additionally, the heat shield may be connected to the clip by stamping, riveting, friction engagement, adhesive, adhesive strips, or the like.

In particular, depressions can be provided on the walls of the thermal protection device, into which the laterally located locking projections of the clip can be inserted by positive locking. Thus, the clip can be located between the walls of the housing parallel to the specified at least one insulating layer. In particular, the clamp or at least the clamping band of the clamp can run parallel to the peripheral wall and said at least one insulating layer. Thus, the clip can at least partially close the open U-shape of the housing.

In addition, the body may have at least one recess for receiving the clamping device. Thus, the clamp can be installed regardless of the installed heat protection device.

The heat protection device can be connected to the clip in a technically simple way, if at least one part of the housing is made with the possibility of bending to ensure connection by positive locking with the clip. To do this, at least one part of the wall of the housing can be made longer than the other parts of the walls. The elongate portion can be folded in a line, thus forming a foldable retaining tab.

According to another embodiment, the heat shield has a housing clip that can be connected to the housing to connect the heat shield to the clip. The body clamp may be, for example, a hose clamp or a heavy duty clamp which has a clamping band, two clamping jaws located at the end of the clamping band, and a clamping screw for adjusting the distance between the clamping jaws of the body clamp. The housing clamp can be fixed on the outer side of the peripheral wall of the housing, at least in its individual sections.

The housing clip can advantageously be used to position the thermal protection device around the clip and to optimally fix it with the clip.

The body clip can be configured to conform to the body peripheral wall in an extremely flexible manner when the body clip is connected to the body using at least one welded joint, locking joint, perforation and/or at least one riveted joint.

According to another embodiment, on the radially outer side, the housing comprises at least one guide portion for receiving and guiding the clamping band of the housing clamp. In this case, the housing clamp can be connected to the housing by positive locking. In particular, the clamping band of the housing clamp can be guided by the guide portions. The guide parts can be made in the form of stamped parts or flaps, protruding radially in certain areas from the peripheral wall of the housing and forming a guide element in the form of a tunnel for receiving the clamping band.

At least one additional insulating layer of air can be placed in the receiving area of the heat-shielding device, in the case when the heat-shielding device has at least one spacer element. The spacer element is made, for example, in the form of a flap, a shoulder and/or an insert made of material. Thus, said at least one spacer element can be made universal and suitable for the considered application of the thermal protection device. Due to the presence of an insulating layer of air, the thermal insulation of the heat protection device can be increased with a minimum consumption of material.

Such spacers can be located, for example, between the insulating layer and the clip, or between the insulating layer and the peripheral wall of the housing. In addition, the air gap located both between the insulating layer and the clamp, and between the clamp and the insulating layer, can be adjusted using spacers. The thickness of the air gap can be easily adjusted depending on the extent of the spacer elements in the radial direction. The dimensions of the spacers used may be the same or different. In particular, by using spacer elements, the thermal insulation of the heat shield device in the circumferential direction can be made variable. For example, one half of the thermal protection device may have an additional air gap. In this way, certain areas can be more effectively protected from heat.

Said at least one spacer element can preferably be used in the radial and/or axial direction to control the air gaps within the clamping assembly. Thus, heat transfer by the heat shield device in the axial direction can also be reduced.

According to another embodiment, said at least one spacer can be attached to the clip and/or to the housing and/or to at least one insulating layer. Thus, said at least one spacer element can be positioned in the clamping assembly in various ways. For example, the spacers can be installed during the manufacture of the clip or housing in the form of stamped parts or in the form of bendable flaps.

In accordance with another embodiment, thanks to said at least one spacer element, in the radial direction between the clip and at least one insulating layer, between said at least one insulating layer and the inner side of the housing, between two insulating layers and/or in at least one air gap can be formed in the axial direction between the clip and the housing walls, between said at least one insulating layer and the housing walls and/or between two insulating layers. Thus, said at least one spacing element can be used universally, depending on the technical requirements, to influence the thermal properties of the thermal protection device. Accordingly, the thickness of the clamping unit can also be selectively adjusted or controlled.

The heat protection device can be installed on the clip without a gap and operatively if it has at least one protrusion for receiving the clip clamp device. In this case, the clamp may be any clamp. For example, the clamp may be a profile clamp, pipe clamp, hose clamp, locking clamp, or the like.

According to another embodiment, the thermal protection device has at least one overlapping part, which is located at the end of the housing. According to a preferred embodiment, the overlapping part is designed such that, when the clamping unit is in the assembled state, it closes and/or contacts the second end part of the housing. Thus, when the clamp assembly is in the closed state, the pipe or component that is enclosed by the clamp assembly can be completely covered by the heat shield. In particular, by using the overlapping part, complete thermal protection can be achieved around the periphery.

Preferably, the overlapping part may be integral with the housing. Alternatively, the overlapping portion may be attached to the housing and/or to the clamping band. The overlapping part can overlap the second end part of the body, for example from the side or from the inside, and therefore provide continuous thermal protection.

Other features, details and advantages of the invention will become apparent from the claims and from the following description of the embodiments with reference to the drawings, in which:

Fig. 1 is a perspective view of a housing of a thermal protection device according to one embodiment.

Fig. 2 is a side view of a clamp assembly according to one embodiment.

Fig. 3 is a plan view of a thermal protection device according to one embodiment.

Fig. 4 is a side view of the heat shield device shown in FIG. 3.

Fig. 5 is a plan view of a thermal protection device according to another embodiment.

Fig. 6 is a side view of the heat shield shown in FIG. 3.

Fig. 7 is a plan view of a thermal protection device according to another embodiment.

Fig. 8 is a side view of the heat shield device shown in FIG. 7.

Fig. 9 is a cross-section along line A-A shown in FIG. 8 to illustrate the guide portion.

10-18 are cross-sections along line B-B shown in FIG. 2 to illustrate possible embodiments of the thermal protection device.

Fig. 19 is a side view of a clamp assembly having an overlap portion according to one embodiment.

Fig. 20 is a side view of a clamp assembly having an overlap portion according to another embodiment.

Fig. 1 is a perspective view of a housing 1 of a heat shield 2 according to one embodiment. The housing 1 comprises a peripheral wall 4 which extends in the circumferential direction U. On both sides of the peripheral wall 4, the wall or side wall 6 of the housing 1 is formed as a continuation of the peripheral wall 4 in the axial direction A. The walls 6 are bent relative to the peripheral wall 4 in the radial direction R and form relative to the peripheral wall 4, in accordance with this embodiment, a right angle.

The walls 6 of the housing 1 are divided into parts 8, 10, which can be separated from each other by recesses 12. The recesses 12 or parts 8, 10 are made in this example in such a way that the housing 1 can be arranged circumferentially around the clip 14. as the distance from the peripheral wall 4 increases, the parts 8, 10 can take on a conical shape, as a result of which the body 1 can correspond in circumference to a substantially circular clip 14.

One or more parts 10 of the wall 6 may be made longer in order to be connected to the clip 14 by means of elongated parts 10 bent at the end.

The housing 1 has a closing part 16, which is formed by the interaction of the end parts 17, 18 with forced blocking. The closure 16 can be configured to take the shape of the clip 14. In particular, the length of the body 1 can be adjusted using the closure 16.

Fig. 2 is a side view of a clamp assembly 20 according to one embodiment. The clamp assembly 20 has a clamp 14 with a clamp band 22 and a clamp device 24 for clamping the clamp band 22. In this example, the clamp device 24 is illustrated schematically and is in the form of a snap mechanism that is located at the end of the clamp band 22.

According to this embodiment, the body 1 has locking slots 26 which are provided in the walls 6. The clamp band 22 has locking projections 28 which are aligned with the respective locking slots 26 and which can be inserted into the locking slots 26. In this case, the clip 14 can be firmly fixed on the body 1.

The folded elongated portions 10 of the walls 6 are illustrated in a side view. In this case, the elongated parts 10 in the folded state have the same length as the remaining parts 8 of the wall 6.

A receiving area having at least one insulating layer, in FIG. 2 is not shown for clarity. A detailed rationale for this is shown in Fig. 10-18, which show a section along the line B-B shown in FIG. 2.

Fig. 3 is a plan view of a heat shield device 2 according to one embodiment. The corresponding side view is shown in Fig. 4. The heat protection device 2 has a housing 1 and an insulating layer 30, which is located in the housing 1.

According to the illustrated embodiment, the heat shield 2 includes a housing clip 32 that can be connected to the housing 1 to connect the heat shield 2 to the clip 14.

As an example, clamp 32 is in the form of a hose clamp. The clamp 32 has a clamping band 34 and a clamping device 36 comprising a clamping screw 38 which engages with threads stamped in the clamping band 34. By actuating the clamping device 36, the diameter D of the heat shield device 2 can be adjusted to suit different sizes of the clamps 14.

The clip 32 is connected to the peripheral wall 4 of the housing 1 by means of three connection points 40 which are stamped as weld points. The connection points 40 may also be formed as riveting points, glue points, perforations, and the like.

Fig. 3 is a plan view of a thermal protection device 2 according to another embodiment. On FIG. 6 shows a corresponding side view of the thermal protection device 2. The connection points 40 and the insulating layer 30 are not shown in this example for the sake of clarity. In contrast to the embodiments already shown, in this example the thermal protection device 2 has a protrusion 42 for receiving the clamping device 24 of the clamp 14.

The protrusion 42 is placed at an angle of 180° relative to the clamping device 36 of the clamp 32 of the body in such a way as not to damage the clamping device 24 of the clamp 14, which is insulated by a heat protection device 2.

On FIG. 7 and FIG. 8 shows, from various angles, a heat shield 1 according to another embodiment. In contrast to the embodiments already shown, the body clamp 32 is mounted on the body 1 by means of guides 44. In FIG. 9 shows a cross section A-A which illustrates the stamping of the guide portions 44.

On the radially outer side or on the peripheral wall 4, the body 1 comprises three guide parts 44 for receiving and guiding the clamping band 34 of the clamp 32. In this case, the clamp 32 can be connected to the body 1 by positive locking. In particular, the clamp band 34 of the clamp 32 can be guided by the guide portions. The guide parts 44 can be made in the form of stamped parts or flaps, protruding radially in certain areas from the peripheral wall 4 of the body 1 and forming a guide element 46 in the form of a tunnel for receiving the clamping band 34.

Fig. 10-18 are schematic cross-sections along the line B-B shown in FIG. 2 to illustrate possible embodiments of the heat shield device 2. In particular, the receiving area 48 of the heat shield device 2 is illustrated. The receiving area 48 is formed by the side walls 6 of the housing 1 and the peripheral wall 4. In this case, the receiving area 48 has a U-shaped profile.

In the first exemplary embodiment shown in FIG. 10, the receiving area 48 is filled with an insulating layer 30. The receiving area 48 is closed by the clamp band 22 of the clamp 14.

Fig. 11 illustrates an example in which an additional insulating air gap 52 is installed. To this end, the heat shield 2 has at least two spacer elements 50. According to this embodiment, the spacer elements 50 are located between the clip 14 and the insulating layer 30. The spacer elements 50 are installed on the side of the wall 6 of the housing 1 from the side of the receiving area.

On FIG. 12, an insulating air gap 52 is formed between the peripheral wall 4 and the insulating layer 30 by spacers 50 suitably arranged. In FIG. 13, two insulating air gaps 52 are formed in the radial direction R between the clip 14 and the insulating layer 30 and between the insulating layer 30 and the housing 1 by spacers 50.

On FIG. 14 and 15 show thermal protection devices 2 which have two different insulating layers 30, 31. In this case, the material of the first insulating layer 30 may differ from the material of the second insulating layer 31. The insulating layers 30, 31 may be connected to each other or separated from each other. other through the air gap 52.

On FIG. 16 shows an embodiment of a heat shield device 2 similar to that shown in FIG. 10, in which in this example two insulating layers 30, 31 are placed directly connected to each other and to the clip 14. For example, the insulating layers 30, 31 can be adhesively attached to the body 1 and the clip 14.

On FIG. 17 and 18, the insulating layers 30, 31 not only extend over the entire surface in the axial direction A, but also surround the clamp 14 in certain areas in the radial direction R. Thus, the layers 30, 31 also form a U-shape similar to the receiving area 48 In this way, the transfer of heat in the axial direction A from the clamp 14 and to the clamp 14 can be avoided or at least reduced.

On FIG. 18 shows an example in which an air gap can be formed in the axial direction A between the insulating layers 30, 31 or between the insulating layer 31 and the walls 6 of the housing 1.

The invention is not limited to one of the embodiments described above, but can be modified in many ways.

All features and advantages that follow from the claims, description and drawings, including structural elements, spatial arrangement and method steps, may be essential for the invention, both individually and in various combinations.

Fig. 19 is a side view of a clamp assembly 20 having an overlap portion 54, in accordance with one embodiment. The overlapping portion 54 is located on the first end portion 17 of the body 1 of the heat shield 2 and extends in the radial direction R into the receiving portion 58 of the clamping assembly 20. A component, such as a pipe, a hose, or the like, can be installed or fixed in the receiving portion 58.

The overlapping portion 54 has a rounded shape corresponding to the shape of the clamp assembly 20 and preferably follows the shape of the receiving portion 58. Accordingly, the receiving portion 58 may have a continuous support surface of the heat shield 2.

In this case, the clamping unit 20 is shown in the assembled state, in which the overlapping part 54 is in contact with the second end part 18 of the body 1 on one side and thus ensures the continuous operation of the heat protection device 2. The second end part 18 of the body 1 forms in this example in the circumferential direction U the second end of the housing 1 of the heat-shielding device 2.

Fig. 20 is a side view of a clamp assembly 20 having an overlap portion 54 according to another embodiment. Unlike the embodiment shown in FIG. 19, in this case, the overlapping portion 54 is designed in such a way that, in the axial direction A, it overlaps the second end portion 18 of the body 1 on at least one side in the axial direction.

In the illustrated embodiment, the overlapping portion 54 extends the first end 55 of the body 1 in the circumferential direction U.

Preferably, the overlapping portion 54 may overlap the second end portion 18 of the housing 1 in the axial direction on both sides, or surround the second end portion 18 of the housing 1 at least partially. In this way, it is also possible to avoid, for example, movement of the thermal protection device 2 in the connection area between the first end part 17 and the second end part 18.

Position number list

1 Corps

2 Heat shield

4 Peripheral wall

6 Wall/side wall

Part 8

10 Extended part

12 recess

14 Clamp

16 Closing part

17 First end part of the body

18 Second end part of the housing

20 Clamping unit

22 Clamping band

24 Clamping device

26 Housing locking slot

28 Clamp locking lug

30 Insulating layer/first insulating layer

31 Second insulating layer

32 Housing clamp

34 Clamping band for housing clamp

36 Housing clamp clamp

38 Housing clamp clamp screw

40 Welding point/junction

42 ledge

44 Guide part

46 Guide element in the form of a tunnel

48 Receiving area

50 Spacer

52 Air gap

54 Overlapping part

58 Receiving part

A Axial direction

D Heat shield diameter

R Radial direction

U District direction.

Claims (10)

1. Clamping assembly (20), which contains a clamp (14) having a clamping tape (22) and a clamping device (24) for clamping the clamping tape (22), and a heat-shielding device (2) containing a housing (1) and at least at least one insulating layer (30), moreover, the body (1) on the axial end surfaces has a wall (6), which is divided into parts (8, 10) and extends radially inward, while the specified at least one insulating layer (30) is made with the possibility of being placed between the walls (6) of the body (1), and the clamp (14) is made with the possibility of covering at least in some areas by the body (1) and/or the said at least one insulating layer (30) of the heat-shielding device (2) , wherein the heat protection device (2) is connected to the clamp (14) by positive locking, wherein at least one part (10) of the body (1) is made with the possibility of bending to form a connection with the clamp (14) with positive locking, characterized in that that at least one part of the wall and the housing is made longer than the remaining parts of the walls, while the specified elongated part is made with the possibility of bending along the line with the formation of a bendable holding tab. 2. Clamp assembly according to claim 1, wherein the heat shield device (2) has a body clip (32) which is configured to be connected to the body (1) to connect the heat shield device (2) to the clip (14). 3. Clamping assembly according to claim 2, wherein the body clamp (32) is connected to the body (1) using at least one welding point, locking connection, punching point or at least one rivet connection. 4. Clamping assembly according to claim 2 or 3, in which the body (1) on its peripheral wall (4) has at least one guide part (46) for receiving and guiding the clamping band (34) of the body clamp (32). 5. Clamping unit according to claim 1 or 2, in which the heat-shielding device (2) has at least one spacer element (50), which is made in the form of a valve, shoulder and/or material insert. 6. Clamp assembly according to claim 5, in which each of said at least one spacer element (50) is configured to be attached to the clamp (14), or to the housing (1), or to at least one insulating layer (30 , 31). 7. Clamping assembly according to claim 5, in which, thanks to the specified at least one spacer element (50), at least one air gap (52) can be formed, each of the specified at least one air gap (52) formed in the radial direction (R) between the clip (14) and at least one insulating layer (30), between said at least one insulating layer (30) and the inner side of the housing (1), between two insulating layers (30, 31 ) or in the axial direction (A) between the clamp (14) and the walls (6) of the housing (1), between the specified at least one insulating layer (30, 31) and the walls (6) of the housing (1) or between two insulating layers (30, 31). 8. Clamping assembly according to claim 1 or 2, in which the heat shield device (2) has at least one protrusion (42) for accommodating the clamping device (24) of the clamp (14). 9. The clamping unit according to claim 1 or 2, in which the heat-shielding device (2) has at least one overlapping part (54), which is located at the end of the housing (1), and the overlapping part (54) is made so that when clamping unit (20) in the assembled state, it closes the second end part (18) of the body (1) and/or contacts with it. 10. Heat-shielding device (2) for covering the clamping unit (20) containing the clamp (14) according to claim 1 or 2 at least in separate sections, containing a body (1) that runs around the circumference and has two walls (6) passing in the radial direction (R) relative to the axis (A), and at least one insulating layer (30, 31), which can be placed in the specified housing (1), and the specified at least one insulating layer (30, 31 ) is made with the possibility of placement in the body (1) directly or through at least one spacer element (50).

Images