electrical appliance

Abstract

electrical appliance, characterized in that a housing-forming sealing part (110) rests on a housing part or on at least two housing parts spaced apart from one another, wherein at least one clamping arrangement is arranged on the surface side of the sealing part (110) facing away from the respective housing part and presses the sealing part (110) against the respective housing part, in particular in the respective support area such a respective clamping arrangement, wherein the housing part is a coil body (100), in particular a coil core, of an electromagnet of an electromagnetically actuated brake, wherein the clamping arrangement, in particular for pressing a sealing element against another part, comprises a tensioning wire (5) and a threaded sleeve (4), wherein the tension wire (5) has a circular arc-shaped curved section, a support section (6) of the tension wire (5) is arranged at each of the two end regions, wherein the circularly curved section, the support section (6) and the guide section (7) are arranged in the same plane and / or wherein the tension wire (5) is designed as a flat structure, wherein the threaded sleeve (4) has an internal thread (2) and a slot extending transversely to the thread axis, - wherein both support sections (6) are inserted into the slot and a respective screw (8) screwed into the internal thread (2) applies compressive force to the respective support section (6) directed towards the other support section (6), in particular so that the tension wire (5) is tensioned, - or wherein both support sections (6) are inserted into the slot and one, in particular a single, screw (8) screwed into the internal thread (2) applies a compressive force to one of the two support sections (6) directed towards the other support section (6), so that the other support section (6) rests against a stop shoulder formed on the sleeve, in particular the edge of the slot, in particular is pressed against it, in particular so that the tensioning wire (5) is tensioned.

Description

The invention relates to a clamping arrangement.It is generally known that a wire, in particular round wire, can be used for tensioning.From DE 100 49 168 A1, an electromagnetic brake is known as the closest prior art.DE 198 38 171 A1 discloses an electric motor with brake.From DE 1 968 389 U a clamping clamp for hoses and pipes is known.A clamping clamp is known from DE 1 058 316 A.The invention is therefore based on the object of developing a clamping arrangement with a clamping wire and a threaded sleeve and an electrical appliance, wherein the protection type of the appliance is to be as high as possible.According to the invention, the object is achieved in the case of the electrical device according to the features specified in claim 1. Important features in the electrical device are that a housing-forming sealing part rests on a housing part or on at least two housing parts spaced apart from one another, wherein at least one aforementioned clamping arrangement is arranged on the surface side of the sealing part facing away from the respective housing part and presses the sealing part against the respective housing part, in particular a respective such clamping arrangement in the respective bearing region.It is advantageous here that a high degree of tightness can be achieved. In particular, two housing parts spaced apart from one another can be sealed, wherein the sealing part is more elastic than the two housing parts and can be connected in a force-fitting manner to the housing parts by means of a respective clamping arrangement.It is also advantageous here that the pressure force of the screws can be introduced into the clamping wire in a manner directed as tangentially as possible. This enables the most uniform possible clamping and bearing of the clamping wire against the element surrounded by it. By means of this uniform contact along its extension, a high degree of tightness can thus be achieved if the element is a sealing part which is pressed against a further part by the tension wire. In addition, very cost-effective elements can be used.The sealing part is preferably circular-cylindrically shaped on its outer side, so that the clamping wire bent in the shape of a circular arc can be placed in a tight manner. No clamping wire is present only in the angular range between the support sections.In the last alternative of the invention, only one screw is used. Thus, saving of parts is achievable and the cost is reducible.In an advantageous embodiment, the sealing part is a rubber mat or a rubber sealing tape. It is advantageous here that a high degree of tightness can be maintained even in the event of variations in the distance between the housing parts.In an advantageous embodiment, the housing part is a coil body of an electromagnet of an electromagnetically actuatable brake. It is advantageous here that the brake can be sealed, wherein the coil body is connected to a further housing part by means of bolts and is thus spaced apart. The sealing member then bridges the clearance and seals the interior of the brake from the external environment.In an advantageous embodiment, the further housing part is a flange part having a braking surface. It is advantageous here that the flange part is housing-forming for the brake and can be used for connection to an electric motor, in particular for producing a brake motor.In an advantageous embodiment, the electromagnetically actuatable brake has an armature disk which is arranged in a rotationally fixed but axially displaceable manner with the coil body and a rotatably mounted shaft to which a lining carrier is connected in a rotationally fixed but axially displaceable manner, which carrier has brake linings on both sides axially, wherein the armature disk is arranged axially between the lining carrier and the coil body and the lining carrier is arranged axially between flange part and armature disk, so that when the coil accommodated in the coil body, in particular the electromagnet, is energized, the armature disk is pulled toward the coil body counter to the spring force generated by spring elements and, when the coil is not energized, the armature disk is pressed by the spring elements onto a brake lining of the lining carrier, so that the brake lining arranged on the side of the lining carrier facing away from the armature disk is pressed onto the brake surface of the flange part,in particular, wherein the spring elements are supported on the coil body. It is advantageous here that in the case of non-energization, for example thus power failure, the brake falls in and can be released only when energization is effected. In addition, the brake is sealed, so that no dirt can enter the area of the brake pads.In an advantageous embodiment, the support section extends in the radial direction, in particular extends only in the radial direction. It is advantageous here that the compressive force applied by the screws screwed into the threaded sleeve can be introduced onto the support section in the tangential direction, i.e. in the circumferential direction of the circular arc. Thus, the best possible pressing of the tension wire against the sealing element can be achieved.In an advantageous embodiment, a guide section is formed at the respective end of the support section facing away from the arcuate curved section. It is advantageous here that the threaded sleeve can be oriented in an improved manner with respect to the circular arc of the clamping wire. In addition, sharp sharp edges can be avoided.In an advantageous embodiment, the guide section extends substantially tangentially and / or the angular range covered by the guide section is covered by the angular range covered by the circular course. It is advantageous here that the tension wire is bent from the circular arc-shaped course to the radial support section in the radial direction and from there is bent rearward to the circular arc-shaped course. Thus, the guide portion does not protrude beyond the angular range of the circular arc-shaped portion.In an advantageous embodiment, the support section extends in the radial direction at least by an amount which corresponds to the diameter of the wire cross section of the tension wire. It is advantageous here that the screws press the clamping wire on the entire circumference of the clamping wire.In an advantageous embodiment, the internal thread of the threaded sleeve is continuous. This has the advantage that simple production is made possible.In an advantageous embodiment, both support sections are inserted into the slot in the same slot opening. It is advantageous here that the support sections can be pressed towards one another by the screws, preferably until they come into contact.In an advantageous embodiment, the circle diameter of the arcuate curved section corresponds to at least ten times the radial extent of the support section and / or the circle diameter of the arcuate curved section corresponds to at least ten times the diameter of the wire cross section of the tension wire. It is advantageous here that the sealing of a brake can be improved.In an advantageous embodiment, the extent of the threaded sleeve in the direction of the axis of the internal thread corresponds to at least three times the extent of the threaded sleeve in the transverse direction, i.e. in the radial direction, and / or the length of the slot present in the direction of the axis of the internal thread corresponds to at least twice the extent of the threaded sleeve in the transverse direction, i.e. in the radial direction,in particular, wherein the length is shorter than the extension of the threaded sleeve in the direction of the axis of the internal thread. This has the advantage that stable screwing is made possible. Likewise, due to the slot length, which corresponds to at least twice the extension of the threaded sleeve in the transverse direction, i.e. in the radial direction, a sufficiently large distance for tensioning the tension wire is achieved.In an advantageous embodiment, the clamping wire and / or the threaded sleeve are made of steel. It is advantageous here that high clamping forces can be generated.Further advantages are evident from the dependent claims. The invention is not limited to the combination of features of the claims. The skilled person will be familiar with further meaningful combination possibilities of claims and / or individual claim features and / or features of the description and / or of the figures, in particular from the task and / or the task which arises by comparison with the prior art.The invention will now be explained in more detail with reference to the drawings:FIG. 1 shows a threaded sleeve 4 for a clamping arrangement according to the invention in an oblique view.FIG. 2 shows an associated plan view.FIG. 3 shows an associated longitudinal section.FIG. 4 shows the clamping arrangement according to the invention in a side view.FIG. 5 shows a detail of FIG. 4 on an enlarged scale.FIG. 6 shows an associated sectional view.FIG. 7 shows the threaded sleeve 4 in an oblique view.FIG. 8 shows the threaded sleeve 4 in an oblique view from a different angle of view.FIG. 9 shows the threaded sleeve 4 in an oblique view from a further angle of view.FIG. 10 shows an electromagnetically actuatable brake according to the invention in an oblique view.FIG. 11 shows an associated sectional view.As shown in the figures, the clamping arrangement according to the invention has a threaded sleeve 4 into which an internal thread 2 is incorporated.Screws 8 are screwed into the internal thread 2 of the threaded sleeve 4 on both sides, which screws press on a support section 6 of a tension wire 5.The clamping wire 5 is bent substantially circularly and is placed around the element to be clamped and then clamped onto the element to be clamped by screwing the screws 8 into the internal thread of the threaded sleeve 4.The tension wire 5 is bent at its two end regions, so that the end regions lie in the same plane as the entire tension wire 5.In this case, the clamping wire 5 merges in the respective end region from the circular course into a radially extending section, the support section 6. This is adjoined by an approximately tangentially rearward extending region, also referred to below as guide section 7, in particular thus an approximately tangentially extending region, wherein the angular range covered by this region is covered by the angular range covered by the circular course.The entire bent tension wire 5 is thus planar together with its guide sections 7 and support sections 6.The threaded sleeve 4 is designed with an axial longitudinal section on the upper side and with an axial longitudinal section on the lower side. Thus, a slot is provided in the threaded sleeve 4 which is continuous transversely through the threaded bore 2. The guide section 7 is inserted into this slot to such an extent that it is guided in the slot, in particular on the upper part of the wall delimiting the slot.The insertion is limited by the abutment of the circular course of the clamping wire 5 on the underside of the threaded sleeve 4. the radially extending support section 6, with respect to the circular arc section of the clamping wire 5, is thus shorter than the diameter of the threaded sleeve and / or greater than the screw diameter.The two screws 8 screwed into the internal thread press on the respective support section 7 in the tangential direction. The radial distance of the screws 8 from the circular arc section is very small. Thus, the compressive force of the screws 8 acting on the support sections 7 is introduced almost exactly tangentially. This leads to a particularly good contact of the tension wire with the element to be tensioned.The tension wire 5 is preferably made of round wire. The support section 7 extends in the radial direction at least by an amount corresponding to the diameter of the round wire cross section.As shown in FIGS. 10 and 11, the clamping arrangement can be used advantageously for improving the tightness of an electromagnetically actuated brake.Here, a coil body 100 accommodates a coil 111, the coil body 100 being fixedly connected to a flange part 101. An armature disk is connected to the coil body 100 in a rotationally fixed but axially movable manner. When the coil 111 is energized, the armature disk is pulled toward the coil 111 counter to the spring force generated by spring elements, so that the brake is released.On the shaft 112 to be braked, which is arranged centrally with respect to the armature disc and with respect to the coil 111, a disc 113 is arranged, which acts as a lining carrier for brake linings. Here, the disk 113 has an internal toothing which is in engagement with an external toothing arranged on the shaft 112. The teeth of the tooth arrangements run axially, so that the disk 113 is connected to the shaft 112 in a rotationally fixed but axially movable manner.In the case of non-energization, the spring elements, which are preferably supported on the coil body 100, press the armature disk against a brake lining arranged on the disk 113. Thus, the disc 113 is then pressed with its brake lining arranged facing away from the armature disc onto the flange part 101, in particular onto a brake surface provided for this purpose on the flange part 101.For sealing, a sealing part 110 is provided, which is preferably designed as a rubber mat or rubber sealing tape. The sealing part rests on the coil body 100 on the one hand and on the flange part 101 on the other hand. A clamping arrangement is arranged in each of the respective bearing regions, such that the clamping wire 5 presses the sealing part 110 against the coil body 100 or against the flange part 101 and thus the sealing is improved.By means of the sealing part 110, a sealing of the interior of the electromagnetically actuatable arrangement is thus achieved.In the present document, a screw is always also understood to mean a threaded pin, in particular with hexagonal socket.In a further exemplary embodiment according to the invention, the internal thread 2 is continuous through the threaded sleeve 4.In a further exemplary embodiment according to the invention, the guide section 7 is inserted into the slot to such an extent that it is guided in the slot, in particular on the upper part of the wall delimiting the slot.In a further exemplary embodiment according to the invention, one of the two screws mentioned above is dispensed with in each case. Thus, the remaining screw presses on the first support section of the tension wire when screwing in, and the other support section of the tension wire is pressed on a stop shoulder, i.e. the boundary of the slot in which the support sections are inserted.List of reference characters1 Sleeve wall 2 Internal thread 3 Continuous recess 4 Threaded sleeve 5 Tension wire 6 Support section 7 Guide section 8 Screw 100 Coil body 101 Brake flange part 110 Sealing part, in particular rubber part 111 Coil 112 Shaft 113 Lining carrier

Claims

Electrical device, characterized in that a housing-forming sealing part (110) rests on a housing part or on at least two housing parts spaced apart from one another, wherein at least one clamping arrangement is arranged on the surface side of the sealing part (110) facing away from the respective housing part and presses the sealing part (110) onto the respective housing part, in particular in the respective bearing region a respective such clamping arrangement, wherein the housing part is a coil body (100), in particular i.e. coil core, of an electromagnet of an electromagnetically actuatable brake, wherein the clamping arrangement has a clamping wire (5) and a threaded sleeve (4), in particular for pressing a sealing element onto a further part, wherein the clamping wire (5) has a section curved in the form of a circular arc, a respective support section (6) of the clamping wire (5) is arranged at both end regions, wherein the section curved in the form of a circular arc is arranged, wherein the section curved in the form of a circular arc, the support section (6) and the guide section (7) are arranged in the same plane and / or wherein the clamping wire (5) is designed as a planar structure, wherein the threaded sleeve (4) has an internal thread (2) and a slot continuous transversely to the thread axis, - wherein both support sections (6) are inserted into the slot and a respective screw (8) screwed into the internal thread (2) applies a compressive force to the respective support section (6) directed towards the respective other support section (6), in particular such that the clamping wire (5) is clamped, - or wherein both support sections (6) are inserted into the slot and a screw (8), in particular a single screw, screwed into the internal thread (2) applies a compressive force to one of the two support sections (6) directed towards the other support section (6), such that the other support section (6) applies a compressive force to a stop shoulder formed on the sleeve, In particular, the edge of the slot is in contact with, in particular pressed against, in particular so that the tensioning wire ( 5) is tensioned.Electrical device according to Claim 1, characterized in that the supporting section (6) extends in the radial direction, in particular extends only in the radial direction.Electrical device according to one of the preceding claims, characterized in that a guide section (7) is formed on the respective end of the support section (6) facing away from the section curved in the shape of a circular arc,Electrical device according to one of the preceding claims, characterized in that the internal thread (2) of the threaded sleeve (4) is continuous.Electrical appliance according to one of the preceding claims, characterized in that both support sections (6) are inserted into the slot in the same slot opening.Electrical device according to one of the preceding claims, characterized in that the extent of the threaded sleeve (4) in the direction of the axis of the internal thread (2) corresponds at least to three times the extent of the threaded sleeve (4) in the transverse direction, that is to say in the radial direction, and / or in that the length of the slot present in the direction of the axis of the internal thread (2) corresponds at least to twice the extent of the threaded sleeve (4) in the transverse direction, that is to say in the radial direction, in particular wherein the length is shorter than the extent of the threaded sleeve (4) in the direction of the axis of the internal thread (2).Electrical device according to one of the preceding claims, characterized in that the clamping wire (5) and / or the threaded sleeve (4) are manufactured from steel.Electrical device according to at least one of the preceding claims, characterized in that the sealing part (110) is a rubber mat or a rubber sealing tape.Electrical appliance according to at least one of the preceding claims, characterized in that the further housing part is a flange part having a braking surface.Electrical device according to at least one of the preceding claims, characterized in that the electromagnetically actuatable brake has an armature disc which is arranged in a rotationally fixed but axially displaceable manner with the coil body (100), and a rotatably mounted shaft (112) to which a lining carrier (113) is connected in a rotationally fixed but axially displaceable manner, said lining carrier having brake pads on both sides, wherein the armature disc is arranged axially between the lining carrier (113) and the coil body (100), and the lining carrier (113) is arranged axially between the flange part and the armature disc, so that when the coil (111) accommodated in the coil body (100), in particular the electromagnet, is energized, the armature disc is pulled towards the coil body (100) counter to the spring force generated by spring elements, and when the coil (111) is not energized, the armature disc is pressed by the spring elements onto a brake pad of the lining carrier (113), so that the brake pad arranged on the side of the pad carrier (113) facing away from the armature disc is pressed onto the braking surface of the flange part, in particular wherein the spring elements are supported on the coil body (100).

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