DE202018104211U1 - Mounting sleeve arrangement with positive connection - Google Patents

Abstract

A fixing sleeve arrangement (10) having a fastening sleeve (14) and a carrier element (12), wherein the fastening sleeve (14) has a stop (18) with which the fastening sleeve (14) moves in the direction of the longitudinal axis (16) of the fastening sleeve (14). supported on the carrier element (12), characterized in thata) the fastening sleeve (14) has a projection (20) which engages in a recess (26) of the carrier element; and / orb) the carrier element (12) has a projection (20) which engages in a recess (30) of the fastening sleeve (14); to secure the mounting sleeve (14) against rotation about its longitudinal axis (16).

Description

The invention relates to a fastening sleeve arrangement with a fastening sleeve and a carrier element, wherein the fastening sleeve has a stop with which the fastening sleeve is supported in the direction of the longitudinal axis of the fastening sleeve on the carrier element.

Such a fastening sleeve is made of WO 2011/141039 A1 known.

Mounting sleeves are an important part of the connection technology and are used wherever a direct connection of the support element and adjacent component is not possible or unsuitable.

A typical application for mounting sleeves are sheet metal structures that are unsuitable for other joining techniques due to their thin-walled support elements.

Conventional fastening sleeves are usually made by cold forming of sheets. In particular, the so-called tube drawing is a common method for the production of fastening sleeves.

The prior art discloses mounting sleeve assemblies consisting of mounting sleeve and carrier element. The mounting sleeve assembly is formed by attaching a mounting sleeve to a support member to provide connectability to an adjacent component.

The mounting sleeve therefore has a structurally configured possibility of attachment for a further component.

Conventional mounting sleeves for this purpose typically have a sleeve recess in the form of a bore through which, for example, a screw is rotated as a fastener. The sleeve recess can be designed in the form of a blind hole or a passage recess.

Mounting sleeves have a stop, over which they are supported in the longitudinal direction positively on the support element.

In general, the stop consists of a stop surface in the longitudinal direction of the fastening sleeve. The stop surface is usually designed as a flange, wherein the surface measure determined by the maximum allowable surface pressure.

For better positioning and centering of the fastening sleeve on the carrier element, the fastening sleeve is designed with a projection or a collar.

The projection usually rises perpendicular to the stop surface with the measure of the projection height / waist height of this. As a result, the projection forms a shoulder which can be inserted into a carrier recess on the carrier element. The prior art discloses rotationally symmetrical projections which have flanks at a constant distance to the longitudinal axis of the fastening sleeve.

As a rule, in the case of typical fastening sleeve arrangements, the sleeve recess and the carrier recess overlap one another. If both the sleeve recess and the carrier recess are designed as through-holes, the arrangement opens up the possibility of a through-connection.

The fastening of the fastening sleeve on the carrier element is typically carried out by welding. In this case, the sleeve is pressed for positioning with the projection in the recess on the carrier element. Subsequently, the fastening sleeve is welded to the carrier element, along the connection point between the projecting flank and the carrier element.

This creates a cohesive, a torque around the longitudinal axis of the mounting sleeve receiving, connection between the mounting sleeve and the support element.

The amount of the absorbable torque and thus the strength of the connection between the mounting sleeve and carrier element is highly dependent on the weld seam quality.

Such a welding sleeve is from the DE 10 2015 009 604 A1 known.

The process of welding of fastening sleeve and carrier element is therefore of great importance. In order to realize the largest possible possible connection between the fastening sleeve and the carrier element, a "deep-welding" technique is used, which connects the fastening sleeve and the carrier element as far as possible in the complete overlapping area. A common method for connecting the fastening sleeve and the carrier element is the laser welding.

During the welding process itself, gases are generated - especially if the fastening sleeve or the carrier element are galvanized - which, due to the method, are not excluded from the Can degas junction. These, trapped in the joint, gases lead to a weakening of the welded joint and thus to reduced strength of the joint between the support member and mounting sleeve.

In order to reduce the entrapment of gas in the joint, special fastening sleeves are used, which allow venting of the welding gases from the joint via structurally provided degassing grooves.

The introduction of Entgasungsrillen requires a higher production cost. In addition, a complete escape of the welding gases and thus a high weld quality can not be guaranteed. In order to gain the greatest possible degree of safety with regard to weld quality, elaborate test methods are used for weld seam inspection.

Object of the invention

The invention is based on the object to propose a mounting sleeve assembly with a mounting sleeve and a support member, which allows both a little costly and safe way of torque absorption in the connection between the mounting sleeve and the support member.

Description of the invention

This object is achieved by an arrangement of the aforementioned type, which is characterized in that the fastening sleeve has a projection which engages in a recess of the carrier element and / or the carrier element has a projection which engages in a recess of the fastening sleeve to the mounting sleeve to prevent it from twisting about its longitudinal axis.

In the context of the present invention, it is provided that a secure torque absorption takes place in the connection point between the fastening sleeve and the carrier element by means of a form-locking toothing thereof.

This offers the advantage of a well-predictable quality of the joint. Previously mentioned, negative influences due to the joining process by deep welding are avoided.

In particular, a force transmission is achieved in the main load directions by positive engagement between the fastening sleeve and the carrier element.

Typically, carrier element and / or mounting sleeve made of metal, in particular sheet metal is used as a carrier element.

The invention is particularly suitable for a connection of galvanized mounting sleeve with galvanized carrier element.

As a rule, the fastening sleeve is produced in a cold forming process, more rarely by casting or 3D printing.

Preferred embodiments of the invention

In a preferred embodiment of the fastening sleeve arrangement according to the invention, the carrier element has a carrier recess for partially or completely receiving the fastening sleeve. As a result, the fastening sleeve can be sunk partially or completely in the carrier element as required. This is particularly advantageous if a planar design of the carrier element is desired.

In a preferred embodiment of this embodiment, the carrier recess is formed in the form of a through-hole. This simplifies the production of the carrier element.

Particularly advantageous is an embodiment in which the fastening sleeve has an aligned with the carrier recess sleeve recess. In such an embodiment, for example, a push-through or Durchschraubverbindung implement.

Also preferred is an embodiment in which the recess on the carrier element is a part of the carrier recess. Also, the recess on the sleeve may constitute a part of the sleeve recess.

In a preferred embodiment of this embodiment, the sleeve recess is designed as a through-hole or as a blind hole.

Particularly advantageous is an embodiment in which the projection and the associated recess each have a flank, which have a varying distance from the longitudinal axis of the fastening sleeve. As a result, a geometric arrangement between the fastening sleeve and the carrier element is created, which absorbs torques and prevents rotational movements about the longitudinal axis of the sleeve. An additional cohesive connection for the purpose mentioned above is not absolutely necessary.

In a preferred development of this embodiment, the projection of the fastening sleeve and the recess of the carrier element, which is in particular part of the carrier recess, each have a flank in the form of a polygon. The projection of the fastening sleeve can be designed in the form of an external polygon. The recess of the carrier element may be formed in the form of an internal polygon.

Advantageously, an embodiment provides that the projection is designed in the form of a collar with a uniform projection height.

In a preferred embodiment, the projection height in the direction of the longitudinal axis of the fastening sleeve is equal to the material thickness of the carrier element. This results in a flat mounting surface on the side facing away from the sleeve of the support element.

Also preferred is an embodiment in which the stop surface of the sleeve stop is designed as a radial groove-free flange. By this embodiment, the manufacturing cost of the mounting sleeve can be reduced while the maximum surface pressure can be increased.

Advantageously, an embodiment provides to fix the mounting sleeve on the carrier element by pressing, gluing, welding and / or wedging of fastening sleeve with carrier element.

In a preferred embodiment, the weld depth of the weld seam between the carrier element and the fastening sleeve is at most 80%, preferably at most 70%, particularly preferably at most 60%, of the material thickness of the carrier element. This ensures that gases that arise during the welding process, even without grooves or the like can escape and not affect the weld.

Furthermore, an embodiment is preferred in which the fastening sleeve has a decreasing in the longitudinal direction of the mounting sleeve outer radius.

Particularly advantageous is an embodiment in which the outer contour of the mounting sleeve is rotationally symmetrical to the longitudinal axis of the mounting sleeve.

In a preferred embodiment, the carrier element, in particular in the embodiment as a metal sheet, has a defined chamfer between the carrier element and the fastening sleeve that surrounds the carrier recess and / or the recess on the carrier element. The chamfer is preferably designed with a maximum of 0.4 mm × 45 °, preferably with a maximum of 0.35 mm × 45 °, particularly preferably with a maximum of 0.3 mm × 45 °. A defined chamfer on the carrier element improves the quality of the connection point between the carrier element and the fastening sleeve, since an undesired placement of the projection of the fastening sleeve on the border of the carrier recess and / or the recess on the carrier element is prevented. Further, the chamfer can be used as an insertion bevel in the joining process, which improves both the positioning of the fastening sleeve on the carrier element and the joining process itself.

joining methods

Within the scope of the present invention, a method for producing a previously described fastening sleeve arrangement according to the invention by joining the fastening sleeve and the carrier element can also be covered.

In a particularly preferred embodiment of the method, the joining of the fastening sleeve takes place on the carrier element by welding. The weld depth between carrier element and mounting sleeve is more preferably not more than 80%, preferably not more than 70%, more preferably not more than 60% of the material thickness of the carrier element.

Further advantages of the invention will become apparent from the description and the drawings. Likewise, according to the invention, the above-mentioned features and those which are still further developed can each be used individually for themselves or for a plurality of combinations of any kind. The embodiments shown and described are not to be understood as exhaustive enumeration, but rather have exemplary character for the description of the invention.

list of figures

• 1a: Eine erste Ausführungsform einer Befestigungshülsenanordnung, bestehend aus einem Trägerelement und einer Befestigungshülse.
• 1b: Eine Darstellung eines Schnittes durch die Mittelebene der ersten Ausführungsform der Befestigungshülsenanordnung mit dem Trägerelement und der Befestigungshülse.
• 1c: Einen Längsschnitt durch das Trägerelement der ersten Ausführungsform.
• 1d: Eine Seitenansicht der Befestigungshülse der ersten Ausführungsform.
• 1e: Eine Ansicht von unten auf die Befestigungshülse der ersten Ausführungsform.
• 1f: Einen Schnitt A-A, gekennzeichnet in Figur 1d, durch die Befestigungshülse der ersten Ausführungsform.
• 1g: Eine Ansicht von unten auf das Trägerelement der ersten Ausführungsform.

The invention is illustrated in the drawing and is explained in more detail with reference to an embodiment. Show it:

• 1a A first embodiment of a fastening sleeve arrangement consisting of a carrier element and a fastening sleeve.
• 1b : A representation of a section through the median plane of the first embodiment of the fastening sleeve arrangement with the carrier element and the fastening sleeve.
• 1c : A longitudinal section through the carrier element of the first embodiment.
• 1d : A side view of the mounting sleeve of the first embodiment.
• 1e : A bottom view of the mounting sleeve of the first embodiment.
• 1f : A section AA, marked in Figure 1d, through the mounting sleeve of the first embodiment.
• 1g : A bottom view of the support member of the first embodiment.

1a shows a first embodiment of a fastening sleeve assembly 10, which is a support element 12 and a fastening sleeve 14 having. The fastening sleeve 14 is already in the assembled final position on the support element 12 displayed. 1a discloses a longitudinal axis 16 the fastening sleeve 14 passing through the center of the mounting sleeve 14 runs in the longitudinal direction. In 1a is the longitudinal axis 16 at the same time an axisymmetric center axis of the fastening sleeve 14 ,

1b shows a section through the in 1a described first embodiment of the mounting sleeve assembly 10 and discloses a stop surface 18 between the support member 12 and the mounting sleeve 14 , which is another insertion of the mounting sleeve 14 in the carrier element 12 prevents and causes the attachment sleeve 14 on the carrier element 12 supported. Further shows 1b a lead 20 , which is the stop surface 18 to the collar / projection height t (see 1d / 1f) takes off. FIG. 1b also shows an arrangement in which the waistband height t equal to a material thickness a of the carrier element 12 is and thus one, the mounting sleeve 14 facing away, flat mounting surface 22 arises. The mounting sleeve 14 has a sleeve recess 24 on, which serves to receive a fastener (not shown), in particular in the form of a screw. Next holds the lead 20 the fastening sleeve 14 in a recess 26 (please refer 1c ) of the carrier element 12 ,

1c shows the in 1g drawn section BB through the support member 12 of the previously described first embodiment of the mounting sleeve assembly 10. The carrier element 12 has a carrier recess 28 and a recess 26 on the carrier element 12 on, which form a common recess in the form of a through-hole. In addition, points 1c a chamfer 30, which circumferentially at the edge of the recess 26 the support member 12 is formed.

Depending on the embodiment, the carrier recess 28 and the recess 26 on the carrier element 12 be separated locally.

Depending on the embodiment, the carrier recess 28 and / or the recess on the carrier element 12 be formed as a blind hole.

Depending on the embodiment, the carrier recess 28 and the sleeve recess 24 be aligned in the longitudinal direction and allow a through-connection.

1d shows a side view of the fastening sleeve 14 with the lead 20 on which a flank 32 is trained.

1e reveals the lead 20 with the flank 32 one, between a smallest distance RFMIN and a greatest distance RFmax , varying distance Rf to the longitudinal axis 16 the fastening sleeve 14 having. Such an embodiment of the flank 32 puts together with the lead 20 encompassing recess 26 the carrier element 12 a positive connection between the fastening sleeve 14 and support element 12 over which a torque about the longitudinal axis 16 can be included.

The inventive idea suggests the projection 20 in the way of making a geometry mating between carrier element 12 and fastening sleeve 14, which results in a rotation of the fastening sleeve 14 about the longitudinal axis 16 of the mounting sleeve 14 prevented.

Such a geometry pairing between carrier element 12 and mounting sleeve 14 is particularly conceivable even if a projection 20 the carrier element 12 a flank 32 that varies with varying distance Rf to the longitudinal axis 16 of the fastening sleeve 14 in such a way in a recess 30 of the fastening sleeve 14 engages that a rotational movement about the longitudinal axis 16 of the fastening sleeve 14 is prevented.

The production-oriented deburring of the projection 20 via a, running in the circumferential direction, undercut 34 ,

1f shows the in 1d drawn section AA through the longitudinal axis 16 of the mounting sleeve 14 and discloses a second flank 36 of the projection 20, which at a constant distance from the longitudinal axis 16 the fastening sleeve 14 is arranged.

For the implementation of the invention, it is sufficient, a single edge 32 the projection 20 or a portion of the flank 32 of the projection 20 with varying distance Rf to the longitudinal axis 16 the fastening sleeve 14 to arrange to create a torque-absorbing connection.

1g shows a view from below of the support element 12 and reveals those around the recess 26 circumferential chamfer 30 ,

Making a synopsis of all the figures of the drawing, a mounting sleeve assembly 10 is disclosed which comprises a support member 12 and a fastening sleeve 14. The mounting sleeve 14 is supported via a stop surface 18 in the longitudinal direction of the fastening sleeve 14 on the support element 12 from. A lead 20 protrudes, preferably in the direction of the surface normal of the stop surface 18 , with a projection height t from the stop surface 18 out. The lead 20 has a flank 32 on, which is preferably in the form of a polygon, in particular in the form of an external square, is formed and in a recess 26 , in particular in the form of a polygon, preferably in the form of an internal square, on the carrier element 12 engages the non-rotating mounting sleeve assembly 10 to realize. A sleeve recess 24 of the mounting sleeve 14 offers the possibility of fastening a fastening element (not shown), in particular in the form of a screw.

LIST OF REFERENCE NUMBERS

10

Mounting sleeve assembly

12

support element

14

mounting sleeve

16

Longitudinal axis of the fastening sleeve 14

18

stop surface

20

head Start

22

mounting surface

24

Sleeve recess

26

Recess on the support element 12th

28

Carrier recess

30

Chamfer on the carrier element 12

32

flank

34

Freeway

36

Second flank

a

Material thickness of the support element 12th

t

Waist height / height of the projection 20

Rf

Radius of the flank 32

RFMIN

Smallest radius of the flank 32

RFmax

Largest radius of the flank 32

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2011/141039 A1 [0002]
• DE 102015009604 A1 [0017]

Claims (14)

A fixing sleeve arrangement (10) having a fastening sleeve (14) and a carrier element (12), wherein the fastening sleeve (14) has a stop (18) with which the fastening sleeve (14) moves in the direction of the longitudinal axis (16) of the fastening sleeve (14). on the support element (12), characterized in that a) the fastening sleeve (14) has a projection (20) which engages in a recess (26) of the support element; and / or b) the carrier element (12) has a projection (20) which engages in a recess (30) of the fastening sleeve (14); to secure the mounting sleeve (14) against rotation about its longitudinal axis (16). Fixing sleeve arrangement according to Claim 1 , characterized in that the carrier element (12) has a carrier recess (28) for partially or completely receiving the fastening sleeve (14). Fixing sleeve arrangement according to Claim 2 , characterized in that the carrier recess (28) is designed in the form of a passage recess. Fixing sleeve arrangement according to Claim 2 or 3 , characterized in that the fastening sleeve (14) has a, with the carrier recess (28) aligned, sleeve recess (24). Fixing sleeve arrangement according to one of Claims 2 to 4 , characterized in that the recess (26) of the carrier element (12) forms a part of the carrier recess (28). Fixing sleeve arrangement according to Claim 5 , characterized in that the sleeve recess (24) is designed as Durchgangsausnehmung or blind hole. Fastening sleeve arrangement according to one of the preceding claims, characterized in that the projection (20) and the recess (26) have a flank (32) with varying spacing (Rf) to the longitudinal axis (16) of the fastening sleeve (14). Fixing sleeve arrangement according to Claim 7 , characterized in that the projection (20) of the fastening sleeve (14) and the recess (26) of the carrier element (12) have a polygon. Fastening sleeve arrangement according to one of the preceding claims, characterized in that the projection (20) in the form of a collar, in the direction of the longitudinal axis (16), with a uniform projection height (t) is formed. Fastening sleeve arrangement according to one of the preceding claims, characterized in that a projection height (t) in the direction of the longitudinal axis (16) of the fastening sleeve (14) is equal to the material thickness (a) of the carrier element (12). Fastening sleeve arrangement according to one of the preceding claims, characterized in that the stop surface (18) is designed as a radial groove-free flange. Fixing sleeve arrangement according to one of Claims 2 to 11 , characterized in that the carrier element (12) has a carrier recess (28) and / or the recess (26) on the carrier element (12) encircling chamfer (30) with a maximum of 0.4mm × 45 °. Fastening sleeve arrangement according to one of the preceding claims, characterized in that the fastening sleeve (14) on the support element (12) by means of pressing, gluing, welding and / or wedging is fixed. Fixing sleeve arrangement according to Claim 13 , characterized in that the weld depth is at most 70% of the material thickness (a) of the carrier element (12).

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