EP3431772A1 - Fastening of a fastening strut for a protective grating for a fan - Google Patents
Fastening of a fastening strut for a protective grating for a fan Download PDFInfo
- Publication number
- EP3431772A1 EP3431772A1 EP18184035.6A EP18184035A EP3431772A1 EP 3431772 A1 EP3431772 A1 EP 3431772A1 EP 18184035 A EP18184035 A EP 18184035A EP 3431772 A1 EP3431772 A1 EP 3431772A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fastening
- leg
- fastening device
- clamping
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 title description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/31—Retaining bolts or nuts
Definitions
- the invention relates to a fastening device of a fastening strut for a fan guard and a fan guard with at least one attachment strut and such a fastening device.
- Fan guards are used, for example, with axial fans as shock protection. They typically include a plurality of concentric, radially spaced bars. In addition, the fan guards are often formed three-dimensional, with its radial edge portion is formed by mainly axially spaced grid bars. Also mutually radially and axially spaced bars can be provided be to form oblique courses.
- the bars of the fan guards are fixed together fixed position and stabilized.
- the fan guards are attached to the fan or fan motor via the ends of the mounting braces.
- a disadvantage of known solutions is in particular the not always sufficient avoidance of lateral force loads and often one-piece or cohesively realized fasteners on or in protective grid elements such as supporting struts.
- the invention is based on the object of improving the attachment of a protective grid and / or increasing the fatigue strength properties of the fasteners required for this purpose.
- a fastening device for fastening a fastening strut for a fan guard, which has at least one first leg extending in a longitudinal direction with a defined clamping surface which is designed to overlap a plurality of grid bars of the fan guard, wherein the at least one first leg has a free longitudinal end , And in the region of the free longitudinal end of the at least first leg, the fastening device is arranged.
- the fastening device comprises a fastening sleeve, which is designed in such a way that at least one clamping region receiving at least the first leg is formed and supported, wherein the fastening sleeve has a receptacle cup-shaped sunk on a side opposite the at least one limb.
- the fastening device has only a single fastening sleeve.
- the clamping region is bounded by at least one collar provided on the fastening sleeve.
- the clamping surface has a flattened, preferably cold-deformed region, which corresponds to the clamping region. As a result, the contact surface is increased.
- an embodiment of the fastening device is characterized in that the fastening sleeve is clamped axially relative to the leg for fixing the protective grid.
- the fastening sleeve can be braced by a screw.
- the screw connection can be done by means of an engaging in the cup-shaped receptacle recorded screw.
- the clamping area formed by the fastening sleeve is dimensioned undersized with respect to the leg, so that in the attached state, a clamping connection is formed.
- an embodiment is included, which is characterized in that the clamping area formed by the fastening sleeve with respect to the leg is so heavily undersized, so that at least one of the elemental materials of the leg or the mounting sleeve at least partially in the field of plastic and / or elastic-plastic flow is claimed.
- a clamping force Fsp for clamping and / or clamping is realized by a screw connection in the clamping area through the fastening sleeve.
- the fastening device is also directed to embodiments in which the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg. Both legs are arranged in the clamping area and are held by the fastening device.
- the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg, wherein the first and the second leg are integrally formed in a hairpin shape and an open end of the hairpin shape determines the free longitudinal end.
- the "hairpin shape" is defined as two U-shaped at least substantially parallel legs, which is closed on one side by a substantially circular transition, so that a U-shape is formed, wherein the respective leg length and curvature of the transition are variable.
- the fastening device is preferably arranged in the transverse direction between the first and second leg. The free longitudinal end of the mounting strut is stabilized by the arrangement of the fastening device between the two legs, allows a higher snapshot at the attachment point of the fan guard and ensures an increased life during operation.
- first and / or the second leg have a substantially round cross-sectional shape.
- the fastening sleeve In the region of the free longitudinal end of the fastening strut, the fastening sleeve is arranged so that it is flush with the free longitudinal end of the leg or legs.
- the invention further comprises a fan guard with at least one, preferably a plurality of, above-described attachment struts and a corresponding number of attachment devices on each of the attachment struts.
- a fan guard has a plurality of bars, which are overlapped by the at least one attachment strut.
- the free longitudinal end of the mounting strut and the arranged thereon Fastener protrude radially inwardly from the region of the grid bars and provide a connection point to the fan or fan motor.
- FIG. 1 a fan guard 50 is shown with a plurality of circumferential bars 3 in a perspective view.
- the fan guard 50 has four attachment struts 31 for mounting on a fan, between which shorter one-sided reinforcing struts 30 are arranged, each seen in the radial direction.
- the fastening struts 1 overlap all grid bars 3 and have at their radially inner portions in each case the free longitudinal end.
- Each of the attachment struts 31 is formed by two legs 11, 12 which extend in a hairpin shape. Both legs 11, 12 have a defined clamping surface 39, with which the fastening sleeve 14 cooperates in a manner that their covenant 24 rests flat.
- the respectively closed U-shaped section protrudes radially beyond the fan guard grille 50 and in each case offers a connection point.
- the shape of the attachment struts 31 is adapted to the course of the bars 3, so that the attachment struts 1 have an outer substantially vertically extending, an adjoining radially extending, an adjoining oblique portion.
- the oblique section is adjoined by the free longitudinal section, in which the fastening struts 31 run straight in the radial direction.
- the fastening device 13 is provided in each case, which also in the Figures 2 and 3 is shown in more detail.
- Each fastening device 13 comprises according to FIG. 2 and 3 a fastening sleeve 14, which forms the clamping region 19.
- the leg ends of the legs 11, 12 are inserted into the clamping region 19.
- the fastening sleeve 14 has the legs 11, 12 completely overlapping collar 24, which also bounds the clamping portion 19.
- this is done via a screw, not shown, which is guided by the screw hole 17 provided in the cup-shaped receptacle 59 and the fixing sleeve 14 can move or fix in the axial direction.
- the cup-shaped recessed receptacle 59 forms an axially projecting circumferential edge portion 28, which closes the fastening sleeve 14.
- the clamping portion 19 is viewed in the axial direction with respect to the legs 11, 12 undersized, so that in the attached state, a clamping connection according to Fig. 2 is formed.
- the fastening sleeve 14 generates in the clamped state in the clamping area 19 an axial clamping force Fsp, which is sufficient that both the required clamping forces of the clamping portion 19 and the aufappelbaren transverse forces (perpendicular to the axial clamping force) are above the real occurring transverse forces Fq.
- the adjacent component to which the fan guard 50 is fastened by means of the fastening device 13 is not shown.
- the fastening sleeve 14 of the fastening device 13 is flush with the free longitudinal end of the round cross-section legs 11, 12 from.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Die Erfindung betrifft eine Befestigungsvorrichtung zur Befestigung einer Befestigungsstrebe für ein Lüfterschutzgitter (50), das zumindest einen sich in einer Längsrichtung erstreckenden ersten Schenkel (11) mit einer definierten Klemmfläche (39) aufweist, der ausgebildet ist, mehrere Gitterstäbe (3) des Lüfterschutzgitters (50) zu übergreifen, wobei der zumindest eine erste Schenkel (11) ein freies Längsende aufweist, und im Bereich des freien Längsendes des zumindest ersten Schenkels (11) die Befestigungsvorrichtung (13) angeordnet ist, dadurch gekennzeichnet, dass die Befestigungsvorrichtung (13) eine Befestigungshülse (14) umfasst, die derart ausgebildet ist, dass wenigstens ein zumindest den ersten Schenkel (11) aufnehmender Klemmbereich (19) gebildet und unterstützt ist, wobei die Befestigungshülse (14) auf einer dem zumindest einen Schenkel (11) gegenüberliegenden Seite eine topfförmig eingesenkte Aufnahme (59) aufweist. The invention relates to a fastening device for fastening a fastening strut for a fan protection grille (50) which has at least one first leg (11) extending in a longitudinal direction with a defined clamping surface (39) which is designed to hold a plurality of grille bars (3) of the fan guard grille (3). 50), wherein the at least one first leg (11) has a free longitudinal end, and in the region of the free longitudinal end of the at least first leg (11), the fastening device (13) is arranged, characterized in that the fastening device (13) a Mounting sleeve (14) which is formed such that at least one at least the first leg (11) receiving clamping region (19) is formed and supported, wherein the mounting sleeve (14) on a the at least one leg (11) opposite side of a cup-shaped recessed receptacle (59).
Description
Die Erfindung betrifft eine Befestigungsvorrichtung einer Befestigungsstrebe für ein Lüfterschutzgitter sowie ein Lüfterschutzgitter mit wenigstens einer Befestigungsstrebe und einer derartigen Befestigungsvorrichtung.The invention relates to a fastening device of a fastening strut for a fan guard and a fan guard with at least one attachment strut and such a fastening device.
Lüfterschutzgitter werden beispielsweise bei Axiallüftern als Berührschutz eingesetzt. Sie umfassen üblicherweise eine Vielzahl von konzentrischen in radialer Richtung beabstandeten Gitterstäben. Zudem sind die Lüfterschutzgitter häufig dreidimensional ausgebildet, wobei ihr radialer Randabschnitt durch hauptsächlich axial beabstandete Gitterstäbe gebildet ist. Auch zueinander radial und axial beabstandete Gitterstäbe können vorgesehen sein, um schräge Verläufe auszubilden.Fan guards are used, for example, with axial fans as shock protection. They typically include a plurality of concentric, radially spaced bars. In addition, the fan guards are often formed three-dimensional, with its radial edge portion is formed by mainly axially spaced grid bars. Also mutually radially and axially spaced bars can be provided be to form oblique courses.
Durch radial über die Gitterstäbe verlaufende Befestigungsstreben werden die Gitterstäbe der Lüfterschutzgitter miteinander positionsfest befestigt und stabilisiert. Zudem werden die Lüfterschutzgitter über die Enden der Befestigungsstreben an dem Lüfter bzw. dem Lüftermotor befestigt. Diese Anbindungsstellen sind hohen Belastungen ausgesetzt, da zum einen die durch den Betrieb des Lüftermotors erzeugten Biege- und Rotationsmomente, zum anderen im Betrieb erzeugte Schwingungen aufgenommen werden müssen. Die Anbindungsstelle der Befestigungsstrebe muss deshalb äußerst stabil ausgebildet sein, um Brüche der Strebe oder der Befestigungsmittel zu verhindern. Entsprechende Anforderungen werden generell auch an die Befestigungslösung der Streben gestellt.By radially extending over the bars mounting braces the bars of the fan guards are fixed together fixed position and stabilized. In addition, the fan guards are attached to the fan or fan motor via the ends of the mounting braces. These connection points are exposed to high loads, since on the one hand, the bending and rotation moments generated by the operation of the fan motor, on the other hand vibrations generated in the operation must be recorded. The attachment point of the mounting strut must therefore be made extremely stable in order to prevent fractures of the strut or fasteners. Corresponding requirements are generally placed on the fastening solution of the struts.
Stand der Technik zu derartigen Befestigungsstreben und Lüfterschutzgittern ist beispielsweise in der
Nachteilig an bekannten Lösungen ist insbesondere die nicht immer ausreichende Vermeidung von Querkraftbelastungen und die häufig einteilig oder stoffschlüssig realisierten Befestigungsmittel am oder in Schutzgitterelementen wie beispielsweise Tragstreben.A disadvantage of known solutions is in particular the not always sufficient avoidance of lateral force loads and often one-piece or cohesively realized fasteners on or in protective grid elements such as supporting struts.
Der Erfindung liegt die Aufgabe der Verbesserung der Befestigung eines Schutzgitters und/oder die Steigerung der Dauerfestigkeitseigenschaften der dazu erforderlichen Befestigungselemente zu Grunde.The invention is based on the object of improving the attachment of a protective grid and / or increasing the fatigue strength properties of the fasteners required for this purpose.
Diese Aufgabe wird durch die Merkmalskombination gemäß Patentanspruch 1 gelöst.This object is achieved by the feature combination according to claim 1.
Erfindungsgemäß wird eine Befestigungsvorrichtung zur Befestigung einer Befestigungsstrebe für ein Lüfterschutzgitter vorgeschlagen, das zumindest einen sich in einer Längsrichtung erstreckenden ersten Schenkel mit einer definierten Klemmfläche aufweist, der ausgebildet ist, mehrere Gitterstäbe des Lüfterschutzgitters zu übergreifen, wobei der zumindest eine erste Schenkel ein freies Längsende aufweist, und im Bereich des freien Längsendes des zumindest ersten Schenkels die Befestigungsvorrichtung angeordnet ist. Die Befestigungsvorrichtung umfasst eine Befestigungshülse, die derart ausgebildet ist, dass wenigstens ein zumindest den ersten Schenkel aufnehmender Klemmbereich gebildet und unterstützt ist, wobei die Befestigungshülse auf einer dem zumindest einen Schenkel gegenüberliegenden Seite eine topfförmig eingesenkte Aufnahme aufweist.According to the invention, a fastening device is proposed for fastening a fastening strut for a fan guard, which has at least one first leg extending in a longitudinal direction with a defined clamping surface which is designed to overlap a plurality of grid bars of the fan guard, wherein the at least one first leg has a free longitudinal end , And in the region of the free longitudinal end of the at least first leg, the fastening device is arranged. The fastening device comprises a fastening sleeve, which is designed in such a way that at least one clamping region receiving at least the first leg is formed and supported, wherein the fastening sleeve has a receptacle cup-shaped sunk on a side opposite the at least one limb.
In einer bevorzugten Ausführung weist die Befestigungsvorrichtung nur eine einzige Befestigungshülse auf.In a preferred embodiment, the fastening device has only a single fastening sleeve.
Gemäß einer Ausführung der Befestigungsvorrichtung ist vorgesehen, dass der Klemmbereich durch wenigstens einen an der Befestigungshülse vorgesehenen Bund berandet ist.According to one embodiment of the fastening device, it is provided that the clamping region is bounded by at least one collar provided on the fastening sleeve.
Vorteilhaft ist ferner eine Ausführung der Befestigungsvorrichtung, bei der die Klemmfläche einen abgeflachten, vorzugsweise kaltverformten Bereich aufweist, der mit dem Klemmbereich korrespondiert. Hierdurch wird die Anlagefläche vergrößert.Also advantageous is an embodiment of the fastening device, in which the clamping surface has a flattened, preferably cold-deformed region, which corresponds to the clamping region. As a result, the contact surface is increased.
Ferner ist ein Ausführungsbeispiel der Befestigungsvorrichtung dadurch gekennzeichnet, dass die Befestigungshülse axial gegenüber dem Schenkel zur Festlegung des Schutzgitters verspannbar ist.Furthermore, an embodiment of the fastening device is characterized in that the fastening sleeve is clamped axially relative to the leg for fixing the protective grid.
Vorzugsweise wird bei der Befestigungsvorrichtung vorgesehen, dass die Befestigungshülse durch eine Verschraubung verspannbar ist. Die Verschraubung kann mittels einer in die topfförmig eingesenkte Aufnahme eingreifenden Schraube erfolgen.Preferably, it is provided in the fastening device that the fastening sleeve can be braced by a screw. The screw connection can be done by means of an engaging in the cup-shaped receptacle recorded screw.
Bei der Befestigungsvorrichtung ist der durch die Befestigungshülse gebildete Klemmbereich gegenüber dem Schenkel untermaßig dimensioniert, sodass im befestigten Zustand eine Klemmverbindung gebildet ist.In the fastening device, the clamping area formed by the fastening sleeve is dimensioned undersized with respect to the leg, so that in the attached state, a clamping connection is formed.
Dabei ist eine Ausführung mit umfasst, die dadurch gekennzeichnet ist, dass der durch die Befestigungshülse gebildete Klemmbereich gegenüber dem Schenkel derart stark untermaßig dimensioniert ist, sodass wenigstens einer der Elementewerkstoffe des Schenkels oder der Befestigungshülse zumindest teilweise im Bereich plastischem und/oder elastisch-plastischem Fließen beansprucht ist.In this case, an embodiment is included, which is characterized in that the clamping area formed by the fastening sleeve with respect to the leg is so heavily undersized, so that at least one of the elemental materials of the leg or the mounting sleeve at least partially in the field of plastic and / or elastic-plastic flow is claimed.
In einer vorteilhaften Weiterbildung ist vorgesehen, dass im Klemmbereich durch die Befestigungshülse eine Spannkraft Fsp zur Verspannung und/oder Klemmung durch eine Schraubenverbindung realisiert ist.In an advantageous development, it is provided that a clamping force Fsp for clamping and / or clamping is realized by a screw connection in the clamping area through the fastening sleeve.
Die Spannkraft wird vorzugsweise derart gewählt, dass sowohl die erforderlichen Klemmkräfte des Klemmbereiches als auch die aufnehmbaren Querkräfte über den real auftretenden Querkräften Fq liegen, wobei die Querkräfte gebildet werden durch Fq= µ * Fsp (µ entspricht der Reibungszahl zwischen den verklemmten aneinander anliegenden Bauteilen, welche die Querkraft aufnehmen).The clamping force is preferably selected such that both the required clamping forces of the clamping region and the absorbable transverse forces are above the real transverse forces Fq, wherein the transverse forces are formed by Fq = μ * Fsp (μ corresponds to the coefficient of friction between the jammed abutting components, which absorb the lateral force).
Die Befestigungsvorrichtung ist auch auf Ausführungen gerichtet, bei denen die Befestigungsstrebe einen sich in Längsrichtung im Wesentlichen parallel zu dem ersten Schenkel erstreckenden zweiten Schenkel aufweist. Beide Schenkel sind im Klemmbereich angeordnet und werden von der Befestigungsvorrichtung gehalten.The fastening device is also directed to embodiments in which the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg. Both legs are arranged in the clamping area and are held by the fastening device.
In einer Weiterbildung ist vorgesehen, dass die Befestigungsstrebe einen sich in Längsrichtung im Wesentlichen parallel zu dem ersten Schenkel erstreckenden zweiten Schenkel aufweist, wobei der erste und der zweite Schenkel einteilig in einer Haarnadelform ausgebildet sind und ein offenes Ende der Haarnadelform das freie Längsende bestimmt. Die "Haarnadelform" ist definiert als zwei zumindest im Wesentlichen parallele Schenkel umfassende U-Form, die einseitig durch einen im Wesentlichen runden Übergang geschlossen ist, so dass eine U-Form entsteht, wobei die jeweilige Schenkellänge und Krümmung des Übergangs variabel sind. Dabei wird vorzugsweise die Befestigungsvorrichtung in der Querrichtung gesehen zwischen dem ersten und zweiten Schenkel angeordnet. Das freie Längsende der Befestigungsstrebe ist durch die Anordnung der Befestigungsvorrichtung zwischen den beiden Schenkeln stabilisiert, ermöglicht eine höhere Momentaufnahme am Befestigungspunkt des Lüfterschutzgitters und gewährleistet eine gesteigerte Lebensdauer im Betrieb.In a further development, it is provided that the fastening strut has a second leg extending in the longitudinal direction substantially parallel to the first leg, wherein the first and the second leg are integrally formed in a hairpin shape and an open end of the hairpin shape determines the free longitudinal end. The "hairpin shape" is defined as two U-shaped at least substantially parallel legs, which is closed on one side by a substantially circular transition, so that a U-shape is formed, wherein the respective leg length and curvature of the transition are variable. In this case, the fastening device is preferably arranged in the transverse direction between the first and second leg. The free longitudinal end of the mounting strut is stabilized by the arrangement of the fastening device between the two legs, allows a higher snapshot at the attachment point of the fan guard and ensures an increased life during operation.
Als vorteilhafte Variante kann ferner vorgesehen werden, dass der der erste und/oder der zweite Schenkel eine im Wesentlichen runde Querschnittsform aufweisen.As an advantageous variant, it may further be provided that the first and / or the second leg have a substantially round cross-sectional shape.
Im Bereich des freien Längsendes der Befestigungsstrebe wird die Befestigungshülse so angeordnet, dass sie bündig mit dem freien Längsende des bzw. der Schenkel abschließt.In the region of the free longitudinal end of the fastening strut, the fastening sleeve is arranged so that it is flush with the free longitudinal end of the leg or legs.
Die Erfindung umfasst ferner ein Lüfterschutzgitter mit wenigstens einer, vorzugsweise einer Vielzahl von vorstehend beschriebenen Befestigungsstreben und einer entsprechenden Anzahl an Befestigungsvorrichtungen an jeder der Befestigungsstreben. Ein derartiges Lüfterschutzgitter weist mehrere Gitterstäbe auf, die von der wenigstens einen Befestigungsstrebe übergriffen sind. Das freie Längsende der Befestigungsstrebe und das daran angeordnete Befestigungselement stehen gegenüber dem Bereich der Gitterstäbe nach radial innen hervor und bieten einen Anbindungspunkt an den Lüfter oder Lüftermotor.The invention further comprises a fan guard with at least one, preferably a plurality of, above-described attachment struts and a corresponding number of attachment devices on each of the attachment struts. Such a fan guard has a plurality of bars, which are overlapped by the at least one attachment strut. The free longitudinal end of the mounting strut and the arranged thereon Fastener protrude radially inwardly from the region of the grid bars and provide a connection point to the fan or fan motor.
Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet bzw. werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführung der Erfindung anhand der Figuren näher dargestellt. Es zeigen:
- Fig. 1
- ein Lüfterschutzgitter in einer perspektivischen Ansicht mit Befestigungsstreben und Befestigungsvorrichtungen;
- Fig. 2
- eine Befestigungsvorrichtung am freien Ende einer der Befestigungsstreben in vergrößerter Detailansicht;
- Fig. 3
- eine Schnittansicht durch die Befestigungsvorrichtung.
- Fig. 1
- a fan guard in a perspective view with fastening struts and fastening devices;
- Fig. 2
- a fastening device at the free end of one of the fastening struts in an enlarged detail view;
- Fig. 3
- a sectional view through the fastening device.
Gleiche Bezugszeichen benennen gleiche Teile in allen Ansichten.Like reference numerals designate like parts throughout the views.
In
Jede Befestigungsvorrichtung 13 umfasst gemäß
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102017116289.5A DE102017116289A1 (en) | 2017-07-19 | 2017-07-19 | Attachment of a fixing brace for a fan guard |
Publications (2)
Publication Number | Publication Date |
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EP3431772A1 true EP3431772A1 (en) | 2019-01-23 |
EP3431772B1 EP3431772B1 (en) | 2024-02-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18184035.6A Active EP3431772B1 (en) | 2017-07-19 | 2018-07-17 | Fastening of a mounting strut for a protective fan guard |
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Country | Link |
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EP (1) | EP3431772B1 (en) |
DE (1) | DE102017116289A1 (en) |
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DE10111397A1 (en) * | 2001-03-09 | 2002-09-12 | Ebm Werke Gmbh & Co Kg | Protective grille with bars and fixing elements for fans comprises at least one damping element which joins the bars similarly to a wheel spoke |
GB2424253A (en) * | 2005-03-14 | 2006-09-20 | L M Products Ltd | Fastening system |
DE102011121025A1 (en) * | 2011-08-18 | 2013-02-21 | Ziehl-Abegg Ag | Motor suspension for fans, preferably axial fans, and method for producing a ventilation grille of such engine mount |
DE202016103323U1 (en) | 2016-06-23 | 2016-07-06 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Mounting strut for a fan guard |
DE102015004019A1 (en) * | 2015-03-26 | 2016-09-29 | Uwe Stadtmüller | Guard; Method for producing a protective grille for fans |
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2017
- 2017-07-19 DE DE102017116289.5A patent/DE102017116289A1/en active Pending
-
2018
- 2018-07-17 EP EP18184035.6A patent/EP3431772B1/en active Active
Patent Citations (8)
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US4102239A (en) * | 1977-02-17 | 1978-07-25 | Dallas Charles M | Washer |
DE3311660C2 (en) | 1983-03-30 | 1990-07-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
DE29900923U1 (en) | 1999-01-20 | 2000-07-06 | Mulfingen Elektrobau Ebm | Arrangement for the vibration-isolating bracket of an electric motor |
DE10111397A1 (en) * | 2001-03-09 | 2002-09-12 | Ebm Werke Gmbh & Co Kg | Protective grille with bars and fixing elements for fans comprises at least one damping element which joins the bars similarly to a wheel spoke |
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DE202016103323U1 (en) | 2016-06-23 | 2016-07-06 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Mounting strut for a fan guard |
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DE102017116289A1 (en) | 2019-01-24 |
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