Clamping tool for temporarily fixing a CD profile to a direct hanger

Abstract

The invention relates to a jaw assembly for temporarily fixing a CD profile (4) to the two brackets (2) of a direct hanger (1). The clamping jaws (11) have bearing surfaces (13) which act on bearing regions of the bracket (2), and the bearing surfaces (13) have a screw-on window (16) through which screws can be actuated in an assembly position, the bracket (2) being connected to the CD profile (4) by means of the screws. In addition, a web (17) is provided which has a passage window (18) for the bracket (2). The web (17) can form a shoulder (15) on which an edge portion (5) of a U-web (5) of the CD profile (4) is supported.

Description

Description Clamping tool for temporarily fixing a CD profile to a direct hanger field of technology

[0001] The invention describes a clamping tool with two clamping jaws, each of which has a head and each head has a contact surface. State of the art

[0002] Such clamping tools are known in the prior art, for example in the form of spring clamps or toggle clamps. With such a tool, a clamping force can be applied to a workpiece by means of contact between the clamping surfaces and the workpiece. Means are provided by which a clamping force can be applied to the workpiece. These means can be a spring element with which the two clamping jaws can be subjected to a force directed towards each other. Such a spring clamp is described, for example, in DE 200 01498 Ul.

[0003] Furthermore, profile bodies, for example CD profiles, are known from the prior art for suspending ceiling panels from a room ceiling. From DE 102013 105 047 D4 and DE 19824 854 Al, means are known by which the two brackets of a direct hanger, which can be attached to the room ceiling with a mounting bracket, engage clamping elements to temporarily fix a U-shaped CD profile between the two brackets. The clamping elements act on the brackets in the area of ​​a contact surface where each bracket rests against a leg of the U-shaped CD profile. The height of such a temporarily suspended ceiling is determined by the clamping elements. 31362PCT drg / ha October 21, 2025 The attached CD profile can then be aligned, for example, using a laser level. The CD profile is moved vertically until the U-shaped rib of the CD profile lies in a horizontal plane.

[0004] DE 101 29130 A discloses a clamping pliers with two jaw arms connected by a joint and bearing pivotally mounted clamping jaws at their ends. These clamping jaws are formed from a stamped part having a window.

[0005] US Patent 2011 / 0271799 A1 discloses a handheld clamping tool with two flat jaws that can be moved and locked via hand levers, thus securely holding a pipe clamp or band between the jaws. In this locked position, fasteners can be inserted into the workpiece through a U-shaped recess located in the front area of ​​the jaws. For this purpose, the flat jaws have corresponding U-shaped recesses on their leading edges, which are congruently opposite each other and form a passage for the fasteners.

[0006] WO 2020 / 210029 Al discloses a hand tool for releasing a pipe or hose from a push-to-connect fitting. The tool comprises two opposing plier arms, each with a pair of first fingers for gripping the pipe and a pair of second fingers for gripping the fitting.

[0007] DE 82 04448 Ul discloses a pair of pliers (with two movable jaws in the form of pressure rollers and a support body arranged between them, on which a connecting element with initially outwardly projecting bending tongues is received and fixed in the correct position by a magnet and lateral edges. The levers are hinged to the support body. 31362PCT drg / ha October 21, 2025 and each consists of two parallel parts, between which the pressure rollers are mounted. Summary of the invention

[0008] The invention is based on the objective of providing a tool suitable for the temporary fixing of two strip-shaped bodies to the two diverging broad faces of a body with a rectangular cross-section. In particular, the tool should be suitable as an assembly aid for the temporary fixing of a CD profile or a wooden slat to two parallel brackets of a direct hanger.

[0009] The invention also relates to a further development of a clamping jaw known per se, which is adapted to temporarily fix two elongated bodies, for example in the form of strips or the brackets of the previously described direct hangers, to another body, which, for example, has two mutually opposing contact surfaces that run parallel to each other. The fixing is intended to be such that the elongated bodies can be attached to the other body in the fixed position, whereby the relative position of the elongated bodies with respect to the other body can still be changed in the fixed position.

[0010] The problem is solved by the invention specified in the claims. The dependent claims not only represent advantageous further developments of the invention specified in the dependent claims, but also constitute independent solutions to the problem.

[0011] According to a first aspect of the invention, the mounting surface shall have a screw-in window. Through this screw-in window, the surface of the elongated body, for example the bracket of a direct hanger, is accessible. 31362PCT drg / ha October 21, 2025 Accessible. Fasteners can be mounted through the screw-in window, allowing the elongated body, for example, the bracket, to be permanently connected to the other body, for example, a wooden slat or the U-shaped leg of a CD profile. Screws can be inserted through the screw-in window using a screwdriver. The screws can be inserted through pre-existing holes in the elongated body, for example, the bracket. Self-tapping screws are preferred and are then screwed into the side of the other body, for example, the U-shaped leg of the CD profile. The shape of the screw-in window can be arbitrary. Preferably, however, the screw-in window has a rectangular shape. The screw-in window can also be designed with an angled slot, for example, an elongated opening.It is essential that the screw-in window is open to both the contact surface and the back of the clamping jaw head. It must allow passage for a screw or a screwing tool. Preferably, the screw-in window has a width that is at least half the width of the contact surface. The screw-in window may have a height that is at least half the height of the contact surface.

[0012] According to a second aspect of the invention, a web adjoins the contact surface. For the temporary attachment of the two elongated bodies to the other body, the clamping jaws are subjected to a force that forces the contact surfaces towards each other. In the operating position, the contact surfaces can therefore run parallel to each other. The web then extends from one of the contact surfaces towards the other. According to the invention, this web has a passage window, the passage window extending to the contact surface. The elongated body, i.e., the bracket, can extend through this passage window during temporary fixation. This results in the tool being fixed to the 31362PCT drg / ha October 21, 2025 elongated body, for example, the bracket of the direct hanger. Preferably, the access window is closed all around, so that the tool can only be moved relative to the elongated body in the direction of extension of the two parallel elongated bodies. When aligning the height of the CD profile, this access opening offers the advantage that, after releasing the clamping force for vertical movement of the tool, the connection to the two brackets of the direct hanger is not lost. The tool is thus guided, in a sense, by the brackets hanging vertically from the ceiling. The width of the access opening is preferably only slightly larger than the width of the direct hanger. The web can be a limiting web of the access window.

[0013] According to a third aspect of the invention, the previously described bridge is intended to form a shoulder against which, in the operating position, an edge section of the body to be fixed to the elongated bodies can rest. Such a shoulder is particularly advantageous when the tool is used for the temporary fixing of a CD profile. In this case, the CD profile can rest on the shoulders with at least the sections of its underside adjacent to the corners. By vertically displacing the tool, the height of the CD profile can thus be changed. For this purpose, the clamping force is reduced slightly or completely. The shoulder can be formed by an inclined flank. Preferably, however, the shoulder is formed by a flank that projects perpendicularly from the contact surface, the contact surface preferably extending in a plane or having a plane of extension.A boundary line of the through-window can be this extension plane. The boundary line can run at the level of the screw-in window, for example, intersecting the window surface of the screw-in window. The screw-in window then extends to and beyond a lower edge of the CD profile. 31362PCT drg / ha October 21, 2025

[0014] To improve the tool's grip on the elongated body, particularly on the brackets hanging from the ceiling, the contact surface can have a friction lining. This friction lining can be a plastic layer, especially a soft plastic layer. The clamping jaws can be made of plastic. The body of the clamping jaws can be made of a hard plastic. A flat contact surface can have a soft plastic layer. The friction lining can be manufactured along with the clamping jaw; for example, the clamping jaw can be produced using a two-component injection molding process. The clamping jaw is thus a single, integral part of the lever.

[0015] According to a preferred embodiment, the clamping jaws can each be arranged at the end of a lever or can themselves form a lever. The clamping jaws can also be rigidly connected to the lever. The two levers can be connected to each other by a joint. The joint can be a scissor joint, in which the two levers cross in the area of ​​the joint. Alternatively, the joint can be a rocker joint, in which moving one lever end towards the other causes the other lever end to move away from each other. The two levers can be pivoted in a position in which the contact surfaces are parallel to each other. Such a pivoted position corresponds to an assembly or operating position in which the contact surfaces rest against the elongated bodies, for example, the brackets of the direct hanger.In this operating position, the distance between the two parallel contact surfaces should have a preferred value. This value corresponds to the nominal width of the CD profile plus the material thicknesses of the two brackets. The nominal width can preferably have the following values: 27 mm, 50 mm, 60 mm, 75 mm, or 100 mm. However, the nominal widths of all commercially available CD profiles are suitable. The joint can be formed by a pivot pin. 31362PCT drg / ha October 21, 2025

[0016] It may also be provided that the clamping jaws or the levers forming the clamping jaws are identical in design. For the articulated connection of the levers, it may be provided that each lever has a recess in the area of ​​the joint. Sections of the other lever engage alternately in this recess. It may also be provided that the levers or the clamping jaws each have a stop. In the assembly or operating position, the two stops are spaced apart from each other. The two clamping jaws, and in particular the two levers, may be subjected to force by a spring element, with the spring element generating the clamping force. The spring element may be a compression spring that forces the clamping jaws towards each other. In a non-operating position, the spring element can bring the two stops into a stop position.In this non-use position, the contact surfaces are spaced further apart. The contact surfaces no longer run in parallel planes, but in intersecting planes, although they are spaced apart from each other. According to a further aspect of the invention, stops can be provided that limit the maximum spreading position of the clamping jaws.

[0017] The jaw arrangement described above is preferably part of a device for temporarily fixing a CD profile to a direct hanger. The device has two levers connected to each other by a hinge. Each lever has a clamping arm and an actuating arm. The jaw arrangement is associated with the clamping arm and can have at least one of the properties described above. The actuating arm can be a handle. The device thus has two handles that can be grasped by a user's hand. When the handles are moved towards each other, the clamping jaws move apart. When the handles are released, the clamping jaws are moved towards each other by a spring element. The device therefore preferably has one of the two 31362PCT drg / ha October 21, 2025 Actuating arms actuate a spring element. Preferably, the actuating arm is connectable to, or is connected to, a spring clamp. Such a device can have two pairs of levers. A first pair of levers has levers connected to each other in a scissor-joint manner, each of these levers having a clamping jaw that is preferably rigidly connected to the lever. However, each clamping jaw can also form a lever. These two levers form clamping levers. One end of the clamping lever forms the clamping jaw. The other end of the clamping lever is connected to one end of a lever of the other pair of levers. The levers of this pair of levers form an actuating lever. One end of the actuating lever is pivotally connected to one end of the clamping lever. In this variant, a spring element can also be provided.The spring element is specifically assigned to the two arms of the lever arrangement, which move towards each other when the contact surfaces are moved away from each other.

[0018] According to a preferred embodiment, the pair of clamping levers forms an adapter that can be connected to a commercially available spring clamp. A commercially available spring clamp has two actuating levers that are connected to each other in a rocker-like manner. Each actuating lever has a handle arm and a clamping arm. When the handle arms are moved towards each other, a spring element is tensioned and the two clamping arms are moved away from each other. At the ends of each clamping arm is a clamping jaw, which is pivotally connected to the end of the clamping arm, for example, by a pivot pin. According to the invention, the adapter is to be connected to the clamping jaws. For this purpose, a free end of the clamping lever of the adapter has a coupling recess into which the clamping jaw can be inserted. The clamping jaw can be held there in a detent connection. It is thus detachably connected to the adapter.The spring element can be assigned to the two actuating arms of the spring clamp, so that the adapter itself does not require a spring element. 31362PCT drg / ha October 21, 2025

[0019] The broad surfaces of the clamping jaws may also feature linear markings that serve as leveling aids when the tool is used to fix CD profiles to direct hangers. The lines of these markings extend in the direction of the surface normals or parallel to the surface normals of the contact surfaces. Brief description of the drawings

[0020] Exemplary embodiments of the invention are explained below with reference to the accompanying drawings. These show: Fig. 1 shows a top view of a first embodiment of the invention, Fig. 2 shows a side view of the embodiment, Fig. 3 shows a perspective view of the embodiment, Fig. 4 shows the view according to IV in Figure 1, Fig. 5 shows an exploded view of the essential components of the first embodiment, Fig. 6 shows a representation according to Figure 1 of a second embodiment, Fig. 7 shows a representation of the second embodiment according to Figure 2, 31362PCT drg / ha October 21, 2025 Fig. 8 shows a perspective view of the second embodiment, Fig. 9 shows a view in the direction of arrow IX in Figure 6, Fig. 10 shows a perspective view of the essential components of the second embodiment, Fig. 11 shows a representation of a third embodiment in a mounting position, wherein contact surfaces 13 of the clamping jaws 11 rest against brackets 2 of a direct hanger 1, Fig. 12 shows a representation of the embodiment shown in Figure 11 rotated by 90° and Fig. 13 shows a representation according to Figure 4 or 9 of the third embodiment. Description of the embodiments

[0021] Figures 1 to 5 show a first embodiment of the invention. In this embodiment, an arrangement of two clamping jaws 11, forming a clamping tool 10, is connected to a spring clamp 30. The spring clamp 30 is a commercially available spring clamp, such as those described, for example, in the prior art mentioned above. The spring clamp 30 has two levers 37, which are connected to each other in a rocker-like manner by a joint 41. Each lever 37 has a handle 31 with grip zones that can be grasped by a user's hand. In a working position, the handles are spaced apart from each other by an angle α. If this angle α is reduced, a [missing information] not shown in the figures 31362PCT drg / ha October 21, 2025 The spring element shown is tensioned. The other arms of the levers 37 each form a clamping arm 32. When the angle α decreases, the distance between the free ends of the clamping arms 32 increases. Clamping jaws 33 are hinged to each of the free ends of the clamping arms 32. The clamping jaws 33 have clamping surfaces that can be brought into a parallel position relative to each other. If the spring element is not compressed by the user's hand, the clamping jaws 33 can be brought into a contact position in which the clamping surfaces are in contact.

[0022] In the exemplary embodiment, the clamping jaws 33 are inserted into coupling recesses 26 of actuating arms 20 of the clamping tool 10. The coupling recess 26 has a base surface 29, which is contacted by a clamping surface of each clamping jaw 33. Two side walls 28 project from the base surface 29, laterally encompassing the clamping jaw 33. At the ends of the side walls 28 are locking projections 27, which engage the clamping jaw 33 in such a way that the clamping jaw 33 is firmly, but releasably, held in the coupling recess 26.

[0023] The clamping tool 10 has two levers, each forming a clamping arm 24. The two levers form clamping jaws 11 and are connected to each other by a joint 19. The joint can be a pivot pin.

[0024] Each clamping arm 24 or each clamping jaw 11 forms a head 12, which is connected via two webs 17 to a region of the lever adjacent to the pivot point. A passage window 18 extends between the two webs 17. The passage window 18 extends to a contact surface 13 of the head 12 that extends in a plane. The sections of the webs 17 immediately adjacent to the contact surface 13 each form a marginal web 17'. This marginal web 17' forms a shoulder 15. 31362PCT drg / ha October 21, 2025 wherein the shoulder 15 is formed by a narrow flank of the edge web 17'. The narrow flank extends perpendicular to the plane of extension of the contact surface 13.

[0025] The contact surface 13 is formed by a friction lining 14. The friction lining 14 consists of a softer plastic than the plastic of the lever and has the property of exerting a higher frictional force on a surface acted upon by the friction lining 14.

[0026] The two webs 17 continue on the rear side of the mounting surface 13 as side ribs 21. The side ribs 21 define a rectangular mounting window 16 in the mounting surface 13. The mounting window 16 is bounded on the rear side at the top by a top rib 22 and at the bottom by a bottom rib 23. The flanks of the top rib 22 and bottom rib 23, which adjoin the mounting window 16, are inclined.

[0027] In its operating position, the contact surfaces 13 lie in parallel planes. In this position, the contact surfaces 13 are separated by a distance A. This distance A can be increased by moving the two handle arms 31 towards each other, thus reducing the angle α. This spreading movement is limited by a stop 35'. If the two handle arms 31 are not subjected to force, the distance A decreases. This movement is also limited by a stop 35'.

[0028] The two clamping jaws 11, connected to each other like a scissor joint, are each manufactured using a two-component injection molding process. However, they can also be manufactured differently; for example, a soft plastic part can be bonded to a hard plastic part. The clamping jaws 11 are identical in design. In the area of ​​the joint 19, each clamping jaw 11 has a 31362PCT drg / ha October 21, 2025 Recess 25, in which a section of the other clamping jaw 11 engages. These recesses 25 also form the two stops 35, 35' described above.

[0029] The second embodiment shown in Figures 6 to 10 also consists of a basic element, which is essentially formed by a previously known spring clamp. Two levers 37 are connected to each other in a rocker-like manner by a joint 41 and each forms a handle arm 31 and a clamping arm 32. The free end of the clamping arm 32 is connected by a joint 34 to an end of an actuating arm 20 of a clamping jaw 11. The clamping jaw 11 can have the same features as the clamping jaw of the previously described embodiment.

[0030] In this embodiment, the shoulders 15 project obliquely from the contact surfaces 13.

[0031] In this embodiment, the screw-in window 16 extends obliquely through the contact surface 13 as an elongated opening. The two webs 17, which connect the head 12 forming the contact surface 13 with the other components of the clamping jaw 11, run parallel to each other, so that the passage window 18 has a rectangular shape.

[0032] Linear markings 38 are provided on the broad sides of the clamping jaws 11. The lines run parallel to each other and parallel to a surface normal of the contact surface 13. These markings 38 can be used when the tool is used to fix CD profiles to direct hangers. A rotating laser beam, the beam of which lies in a plane, is used as a leveling device. The position of the CD profile can be aligned using the markings 38. 31362PCT drg / ha October 21, 2025

[0033] In this embodiment, one of the clamping jaws 11 has an opening 39 through which a narrow section 40 of the other clamping jaws 11 passes. In the passage area, the two clamping jaws 11 are connected to each other by a hinge pin 19.

[0034] Figures 11 to 13 show a third embodiment of a clamping tool 10 with two levers connected to each other in a rocker-like manner at a joint 19. Each lever forms an actuating arm 20 and a clamping arm 24. A compression spring 36 biases the two actuating arms 20 away from each other, so that the clamping arms 24 can come into contact with stops 35 in a non-use position.

[0035] Regarding the design features of the head 12 of each of the two clamping jaws 11 formed by a clamping arm 24, reference is made to the descriptions of the first two embodiments.

[0036] This exemplary embodiment describes a preferred use of the tool according to the invention:

[0037] In drywall construction, ceiling panels are suspended from a room ceiling. A supporting structure is used for this purpose, which is attached to the room ceiling. The supporting structure essentially consists of several direct hangers 1, which can be attached to the room ceiling with a mounting bracket 3. Two narrow, strip-shaped brackets 2 extend downwards from the mounting bracket 3. These brackets 2 each have a grid of holes through which screws can pass to connect each bracket 2 to a U-shaped leg 6 of a CD profile 4. Ceiling panels can be attached to the underside of a U-shaped leg 5 of the CD profile 4. The tool is an aid for the temporary fixing of a CD profile 4 between 31362PCT drg / ha October 21, 2025 the two brackets 2. The distance A described above is the sum of a nominal value of a width of the CD profile, i.e. essentially the width of the U-web 5, which is, for example, 60 mm, plus twice the material thickness of the two brackets 2. When used preferably, the distance can be in the range between 40 and 70 mm.

[0038] When using the tool according to the invention, a CD profile 4 is first placed between the two brackets 2. The clamping tool 10, held vertically by the user, is then brought towards the CD profile 4 from below, with the free ends of the brackets 2 being threaded through the passage windows 18. The width of the passage window 18 is therefore slightly larger than the width of the brackets 2. The clamping tool 10 is moved upwards, for example with clamping arms 24 extended to a spread stop position, until the shoulder 15 contacts an edge section 5' of the U-shaped bridge 5. In this stop position, the stops 35', formed here by the handle arms 20, engage with each other.

[0039] Once this contact position is reached, the handle arms 20 can be released. The force of the spring element 36 then acts on the contact surfaces 13 against the outer surfaces of the brackets 2, each of which contacts a U-shaped web 5 in a contact area.

[0040] By using several such tools 10, a long CD profile 4 can be temporarily fixed to several direct hangers 1 simultaneously. The height of the CD profile can be changed by slightly raising or lowering it. This can be done using a leveling laser and the markings 38. It is considered advantageous that the handle arms 20 extend downwards in the operating position. The first two embodiments are considered particularly advantageous in use. 31362PCT drg / ha October 21, 2025 viewed because the combination of a scissor joint with a rocker joint increases the distance between the handle arms 31 and the heads 12.

[0041] Once the CD profile 4 is aligned, permanent fastening can be carried out using the bracket 2. For this purpose, screws are driven through the mounting windows 16 using a screwdriver, thus firmly connecting the bracket 2 to the U-shaped webs 5.

[0042] The clamping tools 10 are then removed. To do this, the handle arms 20, 31 are squeezed together and the clamping tool 10 is pulled downwards so that the brackets 2 can emerge from the passage windows 18.

[0043] In a non-use position, the stops 35 are in a touching arrangement.

[0044] The foregoing statements serve to explain the inventions covered by the application as a whole, which each independently further develop the prior art at least through the following combinations of features, whereby two, several or all of these combinations of features may also be combined, namely:

[0045] A jaw arrangement characterized in that the contact surfaces 13 have a screw-in window 16 through which fastening elements for connecting the bracket 2 to the U-legs 6 can be mounted in the assembly position. 31362PCT drg / ha October 21, 2025

[0046] A jaw arrangement characterized in that the web 17 has a passage window 18 adjacent to the mounting surface 13, through which the bracket 2 can protrude in the assembly position.

[0047] A jaw arrangement characterized in that the web 17 forms a shoulder 15 on which an edge section 5' of the U-web 5 can be supported in the assembly position.

[0048] A jaw arrangement characterized in that the contact surface 13 has a friction lining 14 and / or that the contact surface 13 runs in a plane.

[0049] A jaw arrangement characterized in that the screw-in window 16 has a rectangular plan or is inclined and / or that the screw-in window 16 extends over at least half of a width and / or a height of the mounting surface 13.

[0050] A jaw arrangement characterized in that the web 17 has a passage window 18 adjacent to the mounting surface 13, wherein the passage window 18 has a width that is at least equal to the width of the screw window 16.

[0051] A jaw arrangement characterized in that the web 17 is a limiting web of a passage window 18 and / or that the shoulder 15 projects obliquely or at right angles from the contact surface 13, and / or that the shoulder 15 adjoins the contact surface 13 at the level of a screw-in window 16 extending in the contact surface 13. 31362PCT drg / ha October 21, 2025

[0052] A jaw arrangement characterized in that the clamping jaws 11 are arranged at the ends of levers which are pivotably connected to each other by a joint 19, wherein the two opposing contact surfaces 13 in a pivot position of the clamping jaws 11 in which the contact surfaces 13 run parallel to each other have a distance A which corresponds to the nominal width of the CD profile 4 increased by the material thickness of the two brackets 2, wherein the nominal width is in particular 60 mm.

[0053] A jaw arrangement characterized in that the clamping jaws 11 are identical to each other and / or that the clamping jaws 11 have a recess 25 in the area of ​​the joint 19 into which the clamping jaws 11 alternately engage.

[0054] A jaw arrangement characterized in that the clamping force is generated by a spring element 36.

[0055] A jaw arrangement characterized in that the clamping jaws 11 have stops 35 which are spaced apart from each other in the assembly position in which the stop surfaces 13 lie in planes parallel to each other and at which the clamping jaws 11 are subjected to a spring element 36 in a non-use position, wherein the stop surfaces 13 are spaced apart from each other in the non-use position and / or that the clamping jaws 11 have stops 35' which are spaced apart from each other in the assembly position and which lie against each other in a maximum spreading position of the clamping jaws 11.

[0056] A device characterized in that the clamping arms 24 a jaw arrangement according to one or more of the preceding 31362PCT drg / ha October 21, 2025 claims, wherein the actuating arm 20 is either a handle arm or is connected or connectable to a spring clamp 30.

[0057] A device characterized in that the actuating arm 20 has a coupling recess 26 at its free end for receiving a clamping jaw 33, which is attached by a joint 34 to a clamping arm 32 of the spring clamp 30.

[0058] A device characterized in that the actuating arm 20 is connected at its free end by a joint 34 to a free end of an arm of a lever 37, wherein the two levers 37 are connected to each other in a rocker-like manner by a joint 34.

[0059] All disclosed features are essential to the invention (individually, but also in combination with one another). The disclosure of this application hereby incorporates in full the disclosure content of the associated / attached priority documents (copy of the earlier application), also for the purpose of including features of these documents in the claims of the present application. The dependent claims, even without the features of a referenced claim, characterize independent inventive developments of the prior art, in particular for the purpose of filing divisional applications based on these claims. The invention specified in each claim may additionally include one or more of the features described above, in particular those identified by reference numerals and / or listed in the reference numeral list.The invention also relates to design forms in which individual features mentioned in the preceding description are not realized, in particular insofar as they are recognizably unnecessary for the respective purpose or can be replaced by other technically equivalent means. 31362PCT drg / ha October 21, 2025 List of reference symbols 1 direct hanger 28 side wall 2 stirrups 29 floor area 3 mounting brackets 30 spring clamps 4 CD profile 31 handle arm 5 U-bridge 32 clamping arm 5' edge section 33 clamping jaw 6 U-leg 34 joint 35 stop 10 clamping tool 35' stop 11 Clamping jaw 36 Spring element 12 Head 37 Lever 13 Installation area 38 Marking 14 Coating, friction lining 39 Opening 15 Shoulder 40 Section 16 screw-on windows 41 hinge 17 Bridge, connecting bridge 17' Randsteg 18 passage windows 19 Joint a Angle 20 Handle arm / Actuating arm 21 Side rib 22 Head rib 23 Foot rib 24 clamping arm 25 Exclusion 26 Clutch recess 27 Rastvorsprung 31362PCT drg / ha October 21, 2025

Claims

Claims 1. Jaw arrangement for temporarily fixing two brackets (2) of a direct hanger (1) to U-shaped legs (6) of a CD profile (4) connected to each other by a U-shaped web (5), wherein the two brackets (2) of the direct hanger (1) each bear against a contact area of ​​the broad side surface of the U-shaped leg (6) in a mounting position, wherein the jaw arrangement forms two levers connected to each other via a joint (19), wherein each lever forms a clamping jaw (11) with a web (17) extending from the clamping jaw (11) to the joint (19), wherein each of the clamping jaws (11) forms a head (12), wherein the head (12) has a contact surface (13), wherein the contact surfaces (13) are designed to exert a clamping force on the brackets (2) in a contact area in the mounting position, characterized in that the contact surfaces (13) have a screw-in window (16) exhibitby which fastening elements for connecting the bracket (2) to the U-legs (6) can be mounted in the assembly position, and that the web (17) has a passage window (18) directly adjacent to the mounting surface (13), through which the bracket (2) can protrude in the assembly position.

2. Jaw arrangement for temporarily fixing two brackets (2) of a direct hanger (1) to U-shaped legs (6) of a CD profile (4) connected to each other by a U-shaped web (5), wherein the two brackets (2) of the direct hanger (1) each bear against a contact area of ​​the broad side surface of the U-shaped leg (6) in a mounting position, wherein the jaw arrangement forms levers connected to each other via a joint (19), wherein each lever forms a clamping jaw (11) with a web (17) extending from the clamping jaw (11) to the joint (19), wherein each of the clamping jaws (11) forms a head (12), wherein the head (12) has a contact surface (13), wherein the contact surfaces (13) 31362PCT drg / ha October 21, 2025 are designed to apply a clamping force to the brackets (2) in a contact area in the assembly position, characterized in that the web (17) has a passage window (18) adjacent to the contact surface (13), through which the bracket (2) can protrude in the assembly position.

3. Jaw arrangement for temporarily fixing two brackets (2) of a direct hanger (1) to U-shaped legs (6) of a CD profile (4) connected to each other by a U-shaped web (5), wherein the two brackets (2) of the direct hanger (1) each bear against a contact area of ​​the broad side surface of the U-shaped leg (6) in a mounting position, wherein the jaw arrangement forms levers connected to each other via a joint (19), wherein each lever forms a clamping jaw (11) with a web (17) extending from the clamping jaw (11) to the joint (19), wherein each of the clamping jaws (11) forms a head (12), wherein the head (12) has a contact surface (13), wherein the contact surfaces (13) are designed to exert a clamping force on the brackets (2) in a contact area in the mounting position, characterized in that the web (17) has a surface adjacent to the contact surface (13). has a passage window (18) through which the bracket (2) can protrude in the mounting position,and that the bridge (17) forms a shoulder (15) at which, in the assembly position, an edge section (5, Z can support the U-shaped bridge (5).

4. Jaw arrangement according to claim 2 or 3, characterized in that the contact surfaces (13) have a screw-in window (16) through which fastening elements for connecting the bracket (2) to the U-legs (6) can be mounted in the assembly position. 31362PCT drg / ha October 21, 2025 5. Jaw arrangement according to one of claims 1 or 4, characterized in that the screw-in window (16) has a rectangular plan or is inclined and / or that the screw-in window (16) extends over at least half of a width and / or a height of the contact surface (13).

6. Jaw arrangement according to one of the preceding claims, characterized in that the contact surface (13) has a friction lining (14) and / or that the contact surface (13) runs in a plane.

7. Jaw arrangement according to one of the preceding claims, characterized in that the passage window (18) has a width that corresponds at least to the width of the screw-on window (16).

8. Jaw arrangement according to one of the preceding claims, characterized in that the web (17) is a limiting web of a passage window (18) and / or that the shoulder (15) projects obliquely or at right angles from the contact surface (13), and / or that the shoulder (15) adjoins the contact surface (13) at the level of a screw-in window (16) extending in the contact surface (13).

9. Jaw arrangement according to one of the preceding claims, characterized in that the clamping jaws (11) are arranged at the ends of the levers, wherein the two contact surfaces (13) facing each other have a distance (A) in a pivot position of the clamping jaws (11) in which the contact surfaces (13) run parallel to each other, which corresponds to the nominal width of the CD profile (4) increased by the material thickness of the two brackets (2), wherein the nominal width is in particular 60 mm. 31362PCT drg / ha October 21, 2025 10. Jaw arrangement according to claim 9, characterized in that the clamping jaws (11) are identical to each other and / or that the clamping jaws (11) have a recess (25) in the area of ​​the joint (19) into which the clamping jaws (11) alternately engage.

11. Jaw arrangement according to one of the preceding claims, characterized in that the clamping force is generated by a spring element (36).

12. Jaw arrangement according to claim 10, characterized in that the clamping jaws (11) have stops (35) which are spaced apart from each other in the assembly position in which the stop surfaces (13) lie in planes parallel to each other and at which the clamping jaws (11) are acted upon by a spring element (36) in a non-use position, wherein the stop surfaces (13) are spaced apart from each other in the non-use position and / or that the clamping jaws (11) have stops (35') which are spaced apart from each other in the assembly position and which lie against each other in a maximum spreading position of the clamping jaws (11).

13. Device for temporarily fixing a CD profile (4) to a direct hanger (1) with two levers connected to each other by means of a joint (19), each having a clamping arm (24) and an actuating arm (20), characterized in that the clamping arms (24) have a jaw arrangement according to one or more of the preceding claims, wherein the actuating arm (20) is either a handle arm or is connected or connectable to a spring clamp (30). 31362PCT drg / ha October 21, 2025 14. Device according to claim 13, characterized in that the actuating arm (20) has a coupling recess (26) at its free end for receiving a clamping jaw (33) which is attached by a joint (34) to a clamping arm (32) of the spring clamp (30).

15. Device according to claim 13, characterized in that the actuating arm (20) is connected at its free end by a joint (34) to a free end of an arm of a lever (37), wherein the two levers (37) are connected to each other in a rocker-like manner by a joint (34). 31362PCT drg / ha October 21, 2025

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