DE202017007147U1 - Summary of a take-up shaft for a truck body with an adapter part and adapter part for a connection between a take-up shaft and a drive shaft - Google Patents

Abstract

Summary of a take-up shaft (1) for a truck body with an adapter part (4) to act on the take-up shaft (1) via a drive shaft (3), wherein the winding shaft (1) having a circular cross-section substantially in a adapted, in the axial direction of the take-up shaft (1) extending and a bottom (8) having the opening (10) of the adapter part (4) is introduced, wherein the take-up shaft (1) extending in the longitudinal direction of the take-up shaft (1) and from the outer surface inwardly extending groove (2), in which a driving projection (15) of the adapter part (4), which is formed by an opening (10) forming the wall (9) engages, characterized in that the driving projection (15) only extends over a part of the axial length of the opening (10), wherein the driving projection (15) seen from the bottom (8) of the opening (10) only with distance (e) to the bottom (8) begins or alternatively with a xialem distance to the also an orifice surface (11) receiving the plane of the adapter part (4) begins.

Description

Field of engineering

The invention initially relates to a summary of a take-up shaft for a truck body with an adapter part in order to act on the take-up shaft via a drive shaft, wherein the take-up in cross-section substantially a circular shape in an adapted, extending in the axial direction of the take-up shaft and a Bottomed opening of the adapter part is introduced, wherein the take-up shaft in the longitudinal direction of the take-up shaft and from the outer surface inwardly extending groove, in which a driving projection of the adapter part, which is formed by a wall forming the opening, engages.

Also, the invention relates to an adapter part for a connection between a take-up shaft for a truck body and a drive shaft, wherein the adapter part has an axially extending and having a bottom opening and a cross-sectional inwardly directed driving projection, which is formed by a Opening wall.

State of the art

In particular in the field of truck bodies, such summaries or such adapter parts are known. For example, a truck tarpaulin can be wound up and unwound via a take-up shaft. The take-up shaft is connected to a drive shaft at least via an adapter part which is non-rotatably connected to the take-up shaft. The latter acts on the winding shaft via the adapter part in a rotationally driving manner. It becomes the state of the art by way of example on EP 1 378 385 B2 directed.

In particular, to the viewed about the longitudinal axis of the take-up shaft rotationally fixed connection of the adapter part and take-up shaft, the take-up shaft is provided with a running in the longitudinal direction of the take-up shaft groove, in which engages a driving projection of the adapter part.

The winding shaft and the adapter part are plugged into each other in known solutions, for example. Using a hydraulic pressing device. It can be made hereafter additionally a form-fitting connection according to deformation in order to secure the adapter part to the take-up shaft in the axial direction. Thus, solutions are known in which an acting from the outside on the wall of the adapter part mandrel brings about such a form-fitting connection according to corresponding wall deformation of winding shaft and adapter part.

In addition, such a winding shaft is formed as an aluminum profile in the usual way. The adapter part is materially harder set relative to the take-up shaft, for example. This may be a cast steel part.

From the US 5,527,227 A is the connection of a pulley with a shaft known, wherein a disc-shaped hub part on which radially outward the belt running surface is formed, has a central hub, with which the shaft is rotatably connected. For this purpose, the shaft is inserted through a passage opening of the hub and secured thereto by screws. In addition, the hub is provided with a radially inwardly engaging in a groove of the shaft form-fitting deflection. From the GB 574988 A For example, the connection of a shaft provided at a male end with a plurality of grooves to a hub is known, which, due to breakouts on its circumferential wall, freely projects into the interior of the hub and projects into the grooves.

Summary of the invention

In view of the known prior art, the invention deals with the problem of further improving the positive connection between the take-up shaft and the adapter part.

With regard to the adapter part, the invention is concerned with the task of further improving such an adapter part in a manner advantageous to use.

A possible solution to both tasks is given in each case according to a first idea of the invention in a summary or an adapter part, which is based on the fact that the driving projection extends only over part of the given in the axial direction length of the opening, wherein the driving projection - seen from the Bottom of the opening - begins only at a distance to the ground or alternatively begins at an axial distance to the muzzle surface receiving a plane of the adapter part.

The in the summary position with the groove of the take-up for rotationally fixed connection of the take-up shaft and the adapter part engaging in the groove of the take-up drive projection of the adapter part, preferably does not extend over the axial direction of the take-up shaft or the adapter part side opening considered overall length of the groove is in radial overlap to a wall region of the opening, but rather only over a portion of the groove, which is considered shorter in the axial direction than the axial length of the opening. It is also preferred with respect to the opening of the adapter part only one Carrier projection formed, as well as, more preferably, the take-up shaft has only one groove.

In one embodiment, in which the entrainment projection starts at an axial distance from the plane of the adapter part which also accommodates the muzzle surface, a free space, which in one embodiment can result from the wall of the opening, can alternatively be covered by wall material.

The axial distance between the bottom of the opening and a preferred parallel plane to the ground, which plane contacts the entrainment projection at the beginning thereof, may correspond to 0.5 to 2 times a maximum extent of the entrainment projection in the circumferential direction, moreover alternatively or in combination thereto one-tenth to one-third of the depth of the opening viewed in the axial direction.

The entrainment projection may extend from the axially spaced start to the bottom of the opening toward the free opening area, i. towards in the direction of the free edge of the opening forming wall of the adapter part be designed continuously. The driving projection may extend into the free opening area, alternatively terminating at an axial distance to this free opening area.

In addition, viewed in the axial direction, the driving projection can be composed of individual projections, between which regions of the wall of the adapter part that are not deformed into driving projections can extend.

The driving projection is further preferably already formed prior to mating of the adapter part with the drive shaft in the adapter part. More preferably, the fit, at least in the region of the projection, between the adapter and the take-up shaft designed so that in the assembled state a press fit is given. The parts can not be removed from each other anymore due to frictional engagement without a tool insert.

According to the proposed solution is in the summary position of the bottom of the opening facing and preferably supported on the bottom of the opening end portion of the take-up of the adapter part side driving projection unaffected in the adapter part. It results in accordance with an end portion of the take-up shaft, in which the groove of the take-up shaft is exposed.

A further solution of the objects is given according to a further concept of the invention in both a summary and an adapter part, wherein it is based on the fact that the driving projection is essentially formed by the wall of the opening, under formation of cross-section at an acute angle with each other enclosing wall parts , which thus leave an acute-angled clearance between them.

The acute-angled orientation of the wall parts refers to a cross-section transverse to the extension of a longitudinal axis of the adapter part. The included angle can, for example, be between 15 ° and, for example, 75 °, preferably approximately between 30 ° and 60 °.

The wall parts enclosing the acute angle may have, with respect to the cross-section, a wall thickness substantially equal to the thickness of the wall otherwise surrounding the opening. Thus, the wall thickness of one of the acute angle enclosing wall portion - possibly even only partially - for example. 0.8 to 1.5 times, beyond possibly up to a 2 times the wall thickness in the circumferential direction outside the Correspond to the acute angle enclosing wall parts.

In the area of the trained driving projection, the wall is closed as a whole in the circumferential direction. The entrainment projection is, for example, formed by a wedge-like radial recess to the inside, wherein the resulting between the wall parts acute-angled clearance can be designed to be open when viewed radially outward.

Irrespective of one of the embodiments described here, the adapter part is preferably formed as a cast part, more preferably as a cast steel part. Thus, in particular, the projection can be formed free of forming stresses.

An inner surface, which delimits the opening in the adapter part, can extend on the bottom side of the opening closer to the longitudinal axis than in a region which is on the other hand more remote from the bottom. Measures may be taken correspondingly, which viewed in the axial direction and causes a reduction in the free cross-sectional area of the opening in the direction of the ground.

This cross-sectional reduction can be achieved in total by a corresponding approximation of the inner surface of the adapter part, based on the entire inner circumference. Also, this reduction can be given solely by in this, the floor-facing end portion of the opening inside surface of the wall Arranged ribs o. The like. Or shaped, radially inwardly projecting elevations.

In a preferred embodiment, the inner surface extending from the bottom of the opening of the adapter part in the direction of the mouth surface of the opening is conically widening. It may, as also preferred, in this case be considered over the axial longitudinal extension uniform conical enlargement. The resultant cone may, as is preferred, relate to only a portion of the axial length of the wall surrounding the aperture, for example, starting from the bottom, over one tenth to one third of the axial depth of the aperture.

In a further embodiment, an exemplary conical extension may extend at least over the axial extent of the wall, which is free of a driving projection.

Next but also the driving projection in the direction of the opening may have a decreasing extent radially inward. The corresponding decrease can be given in a magnitude match to the decrease in the extent of the inner surface radially inward given by conical expansion over the height. But it can also be stronger, for example, by 10 to 100% more or less, for example, by 10 to 50% amount less, done. Preferably, it is continuously given continuously.

Alternatively or additionally, an amount-wise decrease in the circumferential direction may also be present with regard to the driving projection. With respect to the area protruding over the inner surface seen in the circumferential direction. Equal here means that it is an equal amount by which the inner surface recedes over the height with respect to a central axis toward the opening, irrespective of whether or not the inner surface combined has such a deflection. Also, the information regarding more or less are possible with regard to the extension of the driving projection in the circumferential direction in the same way as described with respect to the radial extent of the driving projection.

Thus, for a triangular cross-sectional area (which is unilaterally open, as indicated, preferred), there is an increasing uniform reduction toward the mouth of the opening.

Such a configuration of the driving projection can also result in a form fit in the insertion direction of the take-up shaft above the beginning of the driving projection, as seen from the bottom of the opening. This in addition or alternatively to the below-described compression of the shaft end in the adapter part for positive locking in the axial direction (pull-out direction).

As a result of the reduction in the opening cross-sectional area that results at the bottom, in a preferred embodiment, the bottom side of the opening has a free cross-sectional area of the opening which is smaller than the cross-sectional area of the take-up shaft viewed transversely to the longitudinal extent.

The wall of the adapter part may have one or more passage openings. Preferably, such a passage opening is formed on the bottom side of the adapter part side opening. Thus, by a through hole thus positioned, a check can be performed, for example, whether the take-up shaft is properly fully inserted and stopper limited by the bottom of the opening or is still in this proper position.

In addition, such a passage opening may be formed in the peripheral region of the wall of the adapter part, which also forms the driving projection. Thus, the example. Window-like passage opening may be formed in the axial extension of the driving projection in the wall. The axial extent of the passage opening can be adapted to the axial distance between the ground and the beginning of the driving projection.

The entrainment projection may extend from 1/10 to 1/3 of the diameter dimension of the opening with respect to an orifice area of the opening, starting from the inner surface of the wall. Thus, further, the radial extension dimension of the driving projection, starting from the inner surface of the wall, can correspond to approximately one quarter of a maximum extent of extension of the mouth surface of the opening.

The bottom of the opening may be formed in a possible embodiment of a central platform and a circumferential recess. Viewed in the axial direction, the depression can have a depth dimension of a few millimeters, for example 1 to 3 mm, relative to the support plane of the platform.

As mentioned, a take-up shaft is preferably formed as an aluminum profile shaft. This is preferably separated to length by sawing. An approximately protruding ridge o. The like. Along the peripheral edge can dive accordingly in the circumferential recess. The whole Insertion of the take-up shaft into the opening of the adapter part up to the stop-limited end position given by the platform is not hindered.

The width of the recess measured in the radial direction may correspond to one-tenth to one-third of the diameter dimension of the opening, further for example about one-seventh to one-fifth.

In the assignment and use position, i. in the position of the take-up shaft pressed into the adapter part, a measure in the circumferential direction of the take-up shaft below the driving projection of the adapter part, i. preferably in the takeaway projection-free region immediately in front of the bottom of the opening, be smaller than in the region of the entrainment projection and / or in a region of the take-up shaft extending outside the adapter part. The dimension preferably refers to a circumference of the take-up shaft, regardless of the groove, in a plane perpendicular to a longitudinal central axis of the take-up shaft. At the same time or alternatively alone, in any case, a reduction of the free opening dimension in the circumferential direction of the groove is preferred. This can also be expressed by the fact that with an acute cross-sectional configuration of the groove, this angle below the driving projection is smaller than in the region of the driving projection. This may, as also preferably, be achieved by the exemplary conical taper of the opening cross-sectional area towards the bottom of the opening. In the course of the preferred press-fitting of the take-up shaft into the adapter part, the end of the take-up shaft which is finally supported on the bottom of the opening or on the platform of the bottom is compressed.

The reduction of the dimension (circumferential dimension) can be achieved, as preferred, according to plastic and elastic deformation of the take-up shaft.

It may result in a reduction in the circumference of the take-up shaft by a fraction of a millimeter, for example. A reduction of one hundredth to one tenth, up to a millimeter.

The preferred compression of the shaft end in the adapter part leads outside the engagement of the driving projection of the adapter part in the groove of the take-up shaft to the already mentioned deformation of the shaft-side groove. Thus, the opening dimension considered in the circumferential direction can, as mentioned, decrease as a result of this compression, with which (if necessary in addition) a pull-out protection of the take-up shaft in the axial direction can be achieved. This results in a positive locking in the axial direction.

With regard to the disclosure, the ranges and / or ranges of values or multiple ranges given above also include all intermediate values, in particular in 1/10 increments of the respective dimension, if appropriate also without dimension.

For example. the indication 1/10 to 1/3 also the disclosure of 11/100 to 1/3, 1/10 to 29/30, 11/100 to 29/30, etc. This disclosure can on the one hand to delimit a said range limit of below and / or above, but alternatively or in addition to the disclosure of one or more singular values from a respective specified range serve.

list of figures

• 1 eine perspektivische Darstellung eines Adapterteils, wobei zur Beschreibung auf das Adapterteil weiterer Ausführungsformen der 16 verwiesen ist;
• 1a in explosionsperspektivischer Darstellung eine Aufwickelwelle mit einem zuordbaren Adapterteil und eine Antriebswelle;
• 2 die Zusammenbaustellung von Aufwickelwelle und Adapterteil;
• 3 das Adapterteil in perspektivischer Einzeldarstellung;
• 4 eine weitere perspektivische Darstellung des Adapterteiles;
• 5 das Adapterteil in Ansicht mit Blick auf einen, einen Mitnahmevorsprung ausformenden Bereich;
• 6 die Ansicht gemäß Pfeil VI in 5;
• 7 die Ansicht gemäß Pfeil VII in 5;
• 8 den Schnitt gemäß der Linie VIII-VIII in 5;
• 9 den Schnitt gemäß der Linie IX-IX in 5;
• 10 eine der 5 entsprechende Darstellung, jedoch die Zusammenbaustellung gemäß 2 betreffend;
• 11 den Schnitt gemäß der Linie XI-XI in 10;
• 12 den Schnitt gemäß der Linie XII-XII in 10;
• 13 den Schnitt gemäß der Linie XIII-XIII in 10;
• 14 den Schnitt gemäß der Linie XIV-XIV in 11;
• 15 in perspektivischer Darstellung ein Adapterteil in einer zweiten Ausführungsform;
• 16 eine weitere perspektivische Darstellung eines Adapterteil in weiterer Ausführungsform.

The invention will be explained with reference to the accompanying drawings, which illustrate only exemplary embodiments. A part that is explained only with reference to one of the embodiments and is not replaced in another embodiment due to the special feature there is not replaced by another part, is thus described for this further embodiment as any possible existing part. On the drawing shows:

• 1 a perspective view of an adapter part, wherein for description on the adapter part of further embodiments of 16 is referenced;
• 1a in exploded perspective view of a take-up shaft with an assignable adapter part and a drive shaft;
• 2 the assembly position of take-up shaft and adapter part;
• 3 the adapter part in perspective detail view;
• 4 a further perspective view of the adapter part;
• 5 the adapter part in view overlooking a, a driving projection forming area;
• 6 the view according to arrow VI in 5 ;
• 7 the view according to arrow VII in 5 ;
• 8th the cut according to the line VIII-VIII in 5 ;
• 9 the cut according to the line IX-IX in 5 ;
• 10 one of the 5 corresponding representation, but the assembly position according to 2 concerning;
• 11 the cut according to the line XI-XI in 10 ;
• 12 the cut according to the line XII-XII in 10 ;
• 13 the cut according to the line XIII-XIII in 10 ;
• 14 the cut according to the line XIV-XIV in 11 ;
• 15 a perspective view of an adapter part in a second embodiment;
• 16 a further perspective view of an adapter part in another embodiment.

Description of the embodiments

Shown and described is first with reference to 1a a winding shaft 1 for a truck body, for example, for winding and unwinding a truck tarpaulin.

The winding shaft 1 is generally rod-like with a substantially transverse to its longitudinal axis x considered circular cross-section.

The winding shaft 1 is preferably shaped as an aluminum profile.

From the outer surface of the take-up shaft 1 Starting from radially inward extends a groove 2 , This groove 2 is in the longitudinal extension of the take-up shaft 1 viewed continuously formed.

With reference to a cross section through the take-up shaft 1 This results in a substantially V-shaped configuration of the groove 2 in the manner of a corresponding notch. The trapped by the groove flanks acute angle is about 30 ° in the embodiment.

The depth of the groove viewed radially inward from the outer wall 2 can, as shown, about one fifth of the outer diameter of the take-up shaft 1 correspond.

The winding shaft 1 is with a drive shaft 3 connect to. This is done between the take-up shaft 1 and the drive shaft 3 to be used adapter part 4 , In this adapter part 4 are the winding shaft 1 and the drive shaft 3 steckhalterbar.

While the connector between take-up shaft 1 and adapter part 4 preferably not after preparation of the connection, in particular not without tools, is detachable, the plug connection between the adapter part 4 and drive shaft 3 in a preferred embodiment, if necessary, can also be canceled without tools.

The assignment in use position is in sequential order along the longitudinal axis x in that in a preferred embodiment body axes of the take-up shaft 1 , the drive shaft 3 and the adapter part 4 are arranged on a common axis.

The adapter part 4 is opposite the take-up shaft 1 made of a harder material, eg steel.

Essentially, the adapter part sits down 4 from an adapter section 5 for interaction with the drive shaft 3 and an adapter section 6 for interaction with the take-up shaft 1 together. The two adapter sections 5 and 6 are in the extension direction of the longitudinal axis x arranged one behind the other and rotatably connected to each other in the circumferential direction. This is preferably achieved according to one-piece and uniform material configuration of the two adapter sections 5 and 6 ,

In the illustrated embodiment, the adapter portion extends 5 about more than a third of the entire length of the adapter part 4 in the extension direction of the longitudinal axis x ,

The adapter section 5 has one in a cross section transverse to the direction of extension of the longitudinal axis x square insertion opening 7 on. The edge lengths of the here square opening area are adapted to the edge lengths of the adapter part 4 cooperating square end of the drive shaft 3 ,

It is so in the Steckzuordnung one about the longitudinal axis x non-rotatable connection between drive shaft 3 and adapter part 4 given. This non-rotatable connection can also by other non-circular cross-sectional shapes of the insertion 7 and the associated end of the drive shaft 3 be achieved, for example, by an elongated rectangular shape viewed in cross-section or by wave form viewed in the circumferential direction.

At the in the illustrated embodiment also wall outside square or square-shaped adapter portion 5 closes the preferably substantially circular cylindrical adapter section 6 at. In the transition area between the adapter sections 5 and 6 is a transverse to the longitudinal axis x running floor 8th intended.

From the ground 8th starting extends circumferentially to the longitudinal axis x a wall 9 , This limits an opening 10 of the adapter section 6 ,

The wall 9 is essentially a circular cylindrical wall, which is coaxial with the longitudinal axis x runs. The thereby limited in the circumferential direction opening 10 is towards the other adapter section 5 limited by the ground 8th , Turned away from the ground 8th results in an open mouth area 11 ,

The floor 8th is essentially composed of one with respect to the longitudinal axis x central platform 12 with a transverse to the longitudinal axis x aligned, flat contact surface 13 and one circumferential to the platform 12 aligned well 14 , This results in a groove-like depression 14 which is located between the inner surface of the wall 9 and the platform 12 extends.

The with respect to the longitudinal axis x measured radial width a the depression 14 can be about one tenth of the diameter d the opening 10 in the area of the mouth area 11 correspond.

The depth considered in the axial direction b the depression 14 can be about half the width a the depression 14 correspond.

The adapter part 4 is in the range of the adapter section 6 with a driving advantage 15 provided, for cooperation with the groove 2 the winding shaft 1 , In cooperation position as shown in 2 is so in the opening 10 taken up take-up shaft 1 opposite the adapter part 4 rotationally fixed in the circumferential direction.

The driving advantage 15 is essentially through the wall 9 the opening 10 formed, this under formation of an acute angle in cross section α of about 30 ° with each other enclosing wall parts 16 , These wall parts 16 are, for example, as shown in FIG 7 V-shaped aligned with each other, with a V-tip that points radially inward toward the longitudinal axis x has.

It results so outward an acute-angled clearance 17 , which in the illustrated embodiment according to the 1a to 14 expires freely radially outward.

The radial board dimension c the driving advantage 15 , measured from the inner surface of the wall 9 radially inward, corresponds to about one fifth to one quarter of the diameter d the opening 10 in the area of the mouth area 11 ,

According to the in the 1a to 14 shown first embodiment extends the driving projection 15 starting from the mouth area 11 receiving transverse plane of the adapter part 4 towards the ground 8th the opening 10 , The open space 17 is in this embodiment also to the mouth area 11 receiving level open.

Alternatively, the driving projection 15 - such as in 1 and 16 shown - with axial distance to the mouth area 11 receiving level of the adapter part 4 In this case, as shown, the free space 17 pointing in the axial direction to the above-described level to be covered by wall material.

The considered in cross-section material thickness in the region of the wall parts 16 preferably corresponds essentially to the material thickness of the otherwise circular cylindrical wall 9 ,

The driving advantage 15 is in a figurative sense in the form of a wedge-like depression of the wall 9 educated.

Starting from the mouth area 11 ends the driving projection 15 with respect to the extension in the longitudinal axis direction with axial distance to the contact surface 13 of the soil 8th or the platform 12 , This distance e (please refer 9 ), as well as preferably about one fifth of the total effective recording depth G the opening 10 between the contact surface 13 and the mouth area 11 correspond.

So extends the driving projection 15 in the first embodiment, starting from the mouth surface 11 over a length f , which is about four-fifths of the total recording depth G equivalent.

In the longitudinal direction following the driving projection 15 is the driving-ahead 15 at the same time forming peripheral portion of the wall 9 penetrated by a passage opening 18 , This is with reference to a floor plan according to 10 in which the longitudinal axis x is a line, window-like designed with a rectangular plan, with an opening edge edge runs in the plane, at the same time the bottom of the bottom recess 14 touched. The purpose for this purpose in the axial direction spaced and preferably parallel thereto extending edge of the passage opening 18 At the same time it can be the ground 8th axially spaced end edge of the driving projection in the axial direction 15 form.

The interrupted by the driving projection 15 or ground area side through the passage opening 18 in cross-section beyond circular inner surface 19 the wall 9 runs from the ground 8th , in the illustrated embodiment, in particular starting from the bottom of the recess 14 , in the longitudinal extension direction of the axis x widening conically. The cone area thus formed 20 extends in the axial direction preferably over the region of the passage opening 18 In addition, in the illustrated embodiment, a total of approximately starting from the ground 8th over a third of the recording depth G , It can be provided in this case a cone angle of a few degrees, so for example. A cone angle of 1 to 5 °.

The cone area 20 runs out into a circular cylindrical section of the inner surface 19 with a diameter measure d adapted to the outer diameter dimension of the take-up shaft 1 , Accordingly arise in the cone area 20 towards the ground 8th decreasing diameter dimensions, all of which are smaller than the outer diameter dimension of the take-up shaft 1 ,

The inner surface 19 the wall 9 can, for example, in 15 represented in cross-section also be designed differently from a circular shape. Thus, in this regard, be considered in the circumferential direction waveform, with radially inwardly projecting elevations, which alternate in the circumferential direction with radially outwardly directed recesses. Projections and depressions may be waved into each other with respect to a cross-sectional area.

In particular, the raised, and thus radially inwardly facing areas, on which the lateral surface of the take-up shaft 1 partially supported in the assignment position, can go down to the ground 8th tapered rising.

The free end of the take-up shaft 1 is to be fixed with the adapter part 4 in the opening 10 of the adapter part 4 pressed, this, according to insertion of the take-up shaft 1 in the axial direction, wherein the shaft-side groove 2 the adapter-side driving projection 15 receives. The V-shaped wall parts arranged to each other 16 the adapter part side wall 9 can on the facing surfaces of the shaft-side groove 2 concerns (cf. 11 ).

About the groove / projection connection are the take-up shaft 1 and the adapter part 4 rotatably connected.

Through the passage opening 18 is controllable from the outside, whether the ground 8th facing end face of the take-up shaft 1 properly on the platform-side contact surface 13 is present (cf. 13 ).

Due to the formation of the cone area 20 takes place in the corresponding end region of the take-up shaft 1 a material compression, along with a reduction in the circumferential dimension of the take-up shaft 1 in the projection-free region of the adapter part 4 ,

The circumferential dimension of the take-up shaft 1 is in the projection-free area, so on the axial dimension corresponding to the above-described distance e , opposite the unaffected area of the take-up shaft 1 , for example in the area of the mouth area 11 , reduced by plastic and elastic deformation, so for example. In the circumferential direction, by up to 0.5 or 1 mm.

As a result, if necessary, an increased frictional engagement between the shaft-side surface and the inner surface 19 the wall 9 reached.

Also, by this material compression in the circumferential direction, a deformation in the region of the shaft-side groove 2 achieved, in particular in the form of a reduction of the free dimension of the groove considered transversely to the insertion direction 2 , The flanks of the groove 2 are plastically deformed towards each other in the area of the compression in the circumferential direction, this correspondingly in the projection-free region of the adapter part 4 , in particular in the region of the passage opening 18 ,

Due to the fact that, according to this deformation, the width dimension of the groove considered transversely to the direction of displacement 2 is reduced, this is a favorable way (optionally additional) trigger protection of the take-up shaft 1 from the adapter part 4 given. The adapter part-side driving projection 15 is engaged behind the constricted groove portion 2 the winding shaft 1 , which groove section 2 As a result, it acts as if it were blocking in the withdrawal direction (cf. 12 and 13 ).

LIST OF REFERENCE NUMBERS

1

winding shaft

2

groove

3

drive shaft

4

adapter part

5

adapter section

6

adapter section

7

insertion

8th

ground

9

wall

10

opening

11

mouth area

12

platform

13

contact surface

14

deepening

15

driving projection

16

wall part

17

free space

18

Through opening

19

palm

20

cone region

a

width

b

depth

c

Vorstandsmaß

d

diametric

e

distance

f

length

G

receiver depth

x

longitudinal axis

α

angle

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

• EP 1378385 B2 [0003]
• US 5527227 A [0007]
• GB 574988 A [0007]

Claims (15)

Summary of a take-up shaft (1) for a truck body with an adapter part (4) to act on the take-up shaft (1) via a drive shaft (3), wherein the winding shaft (1) having a circular cross-section substantially in a adapted, in the axial direction of the take-up shaft (1) extending and a bottom (8) having the opening (10) of the adapter part (4) is introduced, wherein the take-up shaft (1) extending in the longitudinal direction of the take-up shaft (1) and from the outer surface inwardly extending groove (2), in which a driving projection (15) of the adapter part (4), which is formed by an opening (10) forming the wall (9) engages, characterized in that the driving projection (15) only extends over a part of the axial length of the opening (10), wherein the driving projection (15) seen from the bottom (8) of the opening (10) only with distance (e) to the bottom (8) begins or alternatively with axial distance to the also an orifice surface (11) receiving the plane of the adapter part (4) begins. Summary according to the characteristics of the generic term of the Claim 1 or after Claim 1 , characterized in that the entrainment projection (15) is formed essentially by the wall (9) of the opening (10), with the formation of cross-section an acute angle (α) with each other enclosing wall parts (16), thus an acute-angled clearance ( 17) between them. Adapter part (4) for a connection between a winding shaft (1) for a truck body and a drive shaft (3), wherein the adapter part (4) has an opening extending in the axial direction and a bottom (8) and an opening in cross-section inwardly directed driving projection (15) which is formed by a wall (9) forming the opening (10), characterized in that the entrainment projection (15) extends over only a part of the length of the opening (10) in the axial direction. extends, wherein the driving projection (15) seen from the bottom (8) of the opening (10) only at a distance (e) to the bottom (8) begins or alternatively at an axial distance to the also an orifice surface (11) receiving the adapter portion (4) begins. Adapter part according to the features of the preamble of Claim 3 or after Claim 3 , characterized in that the entrainment projection (15) is formed essentially by the wall (9) of the opening (10), with the formation of cross-section an acute angle (α) with each other enclosing wall parts (16), thus an acute-angled clearance ( 17) between them. Summary or adapter part according to one of the preceding claims, characterized in that an inner surface (19) which delimits the opening (10) in the adapter part (4), the bottom side of the opening (10) closer to the longitudinal axis (x) than in a in contrast, more remote area to the ground (8). Summary or adapter part according to one of the preceding claims, characterized in that the inner surface (19), viewed from the bottom (8) of the opening (10) of the adapter part (4) extends conically widening. Summary or adapter part according to one of the preceding claims, characterized in that the wall (9) of the adapter part (4) has one or more passage openings (18). Summary or adapter part after Claim 7 , characterized in that a passage opening (18) is formed on the bottom side. Summary or adapter part after one of Claims 7 or 8th , characterized in that a passage opening (18) in the peripheral region of the wall (9) of the adapter part (4) is formed, which forms the driving projection (15). Summary or adapter part according to one of the preceding claims, characterized in that the entrainment projection (15) relative to an orifice surface (11) of the opening (10), starting from the inner surface (19) of the wall (9) over 1/10 to 1 / 3 of the diameter (d) of the opening (10). Summary or adapter part according to one of the preceding claims, characterized in that the bottom (8) of the opening (10) consists of a central platform (12) and a circumferential recess (14) is formed. Summary or adapter part after Claim 11 , characterized in that a width (a) measured in the radial direction of the recess (14) corresponds to 1/10 to 1/3 of the diameter dimension (d) of the opening (10). Summary or adapter part according to one of the preceding claims, characterized in that a measure in the circumferential direction of the take-up shaft (1) below the driving projection (15) of the adapter part (4) is smaller than in the region of the driving projection (15). Summary or adapter part according to one of the preceding claims, characterized in that a measure in the circumferential direction of the take-up shaft (1) below the driving projection (15) of the adapter part (4) is smaller than in an outside of the adapter part (4) extending portion of the take-up shaft ( 1). Summary or adapter part after one of Claims 13 or 14 , characterized in that the reduction of the measure according to plastic and elastic deformation of the take-up shaft (1) is reached.

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