DE102017119789A1 - Summary of a winding shaft for a motor vehicle trim - Google Patents

Abstract

The invention relates to a summary of a winding shaft (7) for a motor vehicle trim, the foot side an adapter (6) having a rotation axis (x) having drive shaft (4) of a ratchet (1), wherein a adapter end (14) a free end of the drive shaft (4) cooperates positively. To provide a summary of the type in question, in which a decoupling between the drive shaft and the adapter is prevented in an advantageous manner, it is proposed that the adapter (6) in the course of placement on an associated end of the drive shaft (4) relative to the drive shaft (4) to rotate about its axis of rotation (x).

Description

Field of engineering

The invention relates to a summary of a take-up shaft for a motor vehicle trim, the foot has an adapter, with a drive shaft of a ratchet, wherein an adapter end cooperates positively with a free end of the drive shaft.

State of the art

Especially in the field of truck bodies such summaries are known.

With regard to a customs safeguard of such a summary is already the DE 10 2015 007 288 A1 known. The solution known from this provides a positive connection by a groove or a protruding rib on the adapter with a securing part, which in turn is in turn supported in the ratchet itself.

Summary of the invention

Based on the stated prior art, the invention has the object to provide a summary of the type in question, in which a decoupling between the drive shaft and the adapter is prevented in an advantageous manner.

A possible solution of the problem is given according to a first inventive concept in a summary, in which it is geared to that the adapter is to be rotated in the course of placement on an associated end of the drive shaft relative to the drive shaft about its axis of rotation.

Both for attaching the adapter to the drive shaft and for removing a relative rotation of the adapter to the drive shaft is necessarily mandatory. As a result, a secure form-locking connection is given in particular in the cocked position of the motor vehicle trim. The form-locking position between the adapter and the drive shaft can not be canceled, in particular in a cocking position of the motor vehicle trim, such as a tarpaulin, in order to avoid, for example, an inch security.

Lifting the adapter from the drive shaft solely by a linear displacement of the adapter along an extension of the drive shaft is prevented. Rather, in the course of such a displacement, a rotation of the adapter is forced around this axis and via the adapter corresponding to a rotation of the take-up shaft. However, this rotation is substantially prevented in the cocking position of the motor vehicle trim, so at least over a portion of the required rotary travel.

The further features of the invention are described below, also in the figure description, often in their preferred assignment to the claim concepts already explained above, but they can also be assigned to only one or more individual features, as described here, in particular those already discussed Claims, or be independent or in another overall concept of importance. It is also possible to combine the measures of the claims already dealt with.

Thus, the rotation for placement, as preferred, take place against the winding direction. It follows that a rotation of the adapter in the clamping direction of the winding shaft is necessary to cancel the positive locking position. However, this is only possible with (partially) relaxed paneling. In the particular customs secured locking position, however, the panel is preferably maximum tensioned. A rotation of the adapter is correspondingly not possible or only via a not enough to cancel the positive connection between the adapter and the drive shaft.

The associated end of the drive shaft may be formed over its length in the axial direction as a polygonal wound around the axis of rotation. Compared to a possible thread here so a low angle of rotation is possible. In addition, there are no superimposed threads. Overall, a stable configuration. The polygon can, as preferred, be formed in one piece and of the same material with the drive shaft.

The coiling can be given by a rotation of the polygonal plan provided by the axial extension of the polygon by a few angular degrees, for example by 5 to 15 °, up to, for example, 45 or 60 ° about the axis of rotation and over the axial extension length of the polygon ,

The receiving end of the adapter may be formed for the associated end of the drive shaft as a helix wound around the axis of rotation hollow. Preferably, the hollow polygon with respect to both the coiling of the Mehrkantes, as well as the floor plan and axial dimension adapted to the drive shaft side polygon.

The drive shaft side polygon may, as preferred, be a square, more preferably a square square square. alternative The polygon can also have, for example, 3, 5 or 6-cornered to 12-sided or 20-cornered (or n-square) floor plan design.

The edge length of the polygon in the plan can correspond to a 0.5 to 2 times the diameter of the drive shaft viewed transversely to the axis of rotation, with an edge length which does not exceed the diameter dimension being preferred.

The longitudinal extent of the polygon considered in the axial direction can correspond to approximately 1 to 3 times, further approximately 1.5 to 2 times the above-described edge length.

The invention is also the adapter alone. Here, the adapter is in the region of its receiving end adapted to the assignable end of the drive shaft and removable only by rotation of the drive shaft, for example. Forming the receiving end as a thread-like portion or further example. As a hollow polygon.

In a thread-like configuration of the receiving end, as preferred, the associated end of the drive shaft can be designed thread-shaped.

list of figures

• 1 eine Draufsicht auf eine Ratsche mit einer Aufwickelwelle und einem Adapterteil in einer ersten Ausführungsform;
• 2 einen Längsschnitt durch die Spannratsche der Spannvorrichtung entlang der Linie II-II in 1;
• 3 den Schnitt gemäß der Linie III-III in 1;
• 4 den Querschnitt gemäß der Linie IV-IV in 1;
• 5 die Draufsicht auf einen antriebswellenseitigen Mehrkant;
• 6 die Antriebswelle und den Adapter in perspektivischer Explosionsdarstellung;
• 7 die Antriebswelle und den Adapter in einer weiteren perspektivischen Explosionsdarstellung;
• 8 die Antriebswelle und den Adapter in perspektivischer Darstellung, die Zuordnungsstellung betreffend.

The invention will be explained with reference to the accompanying drawing, which illustrates only one embodiment. On the drawing shows:

• 1 a plan view of a ratchet with a take-up shaft and an adapter part in a first embodiment;
• 2 a longitudinal section through the tensioning ratchet of the tensioning device along the line II-II in 1 ;
• 3 the section according to the line III-III in 1 ;
• 4 the cross section according to the line IV-IV in 1 ;
• 5 the top view of a drive shaft side polygon;
• 6 the drive shaft and the adapter in a perspective exploded view;
• 7 the drive shaft and the adapter in a further perspective exploded view;
• 8th the drive shaft and the adapter in perspective, regarding the assignment position.

Description of the embodiments

Shown and described, first with reference to 1 , a ratchet 1 in the manner of a tensioning ratchet, which is usually used for clamping objects, such as belts or tarpaulins, on truck vehicles.

The ratchet 1 has a ratchet lever 2 on that around a geometric axis of rotation x pivotable on a fastening part 3 is articulated.

Components of the ratchet 1 are essentially further a drive shaft 4 and a ratchet gear 5 ,

About the drive shaft 4 is one end with an adapter 6 provided take-up shaft 7 around the axis of rotation x rotatable.

The drive shaft 4 has a drive end 9 on. This protrudes with respect to the fastening part 3 in the axial direction of the drive shaft 4 over to the outside and forms in the illustrated embodiment one around the axis of rotation x coiled polygon 11 in the form of a square mandrel with a square outline.

The spiraling of the polygon 11 results from turning the here square plan by about 10 to 15 ° about the axis of rotation x , this over the axial length l of the polygon 1 (see. 6 ). The axial length l corresponds in the illustrated embodiment about 1.5 to 2 times the edge length a of the polygonal floor plan.

Between the outwardly projecting drive end 9 and inside the mounting part 3 extending axis portion of the drive shaft 4 is a radially projecting circumferential flange 10 formed with circular disk-shaped plan.

The adapter 6 is preferred with the arranged thereon and in axial extension extending take-up shaft 7 positively connected, wherein for further rotation a radially inwardly facing projection twelve in an adapted, running in the axial direction groove of the take-up shaft 7 attacks.

The adapter 6 has one of the take-up shaft 7 remote, for positive connection to the drive shaft 4 the ratchet 1 trained receiving end 14 on. Starting from the end face in the area of the free, the take-up shaft 7 facing away from the end extends in the axial direction a positive connection opening, which is substantially adapted to the drive end 9 the drive shaft 4 , here accordingly in the form of a about the axis of rotation x coiled hollow polygon 16 or hollow square.

The axial depth of the positive connection opening 16 is adapted to the axial length l the drive end 9 , as well as the transverse to the axis of rotation x measured edge length of the hollow polygon 16 to the edge length a of the polygon 11 is adjusted.

For mounting the adapter 6 on the associated end of the drive shaft 6 is the adapter 6 relative to the drive shaft 6 around the axis of rotation x to twist, this under einrehender recording of the polygon 11 in the hollow polygon 16 , The opening direction r is directed against a winding, wherein the Aufdrehwinkel α can be selected according to the spiraling of the polygonal base 10 to 15 °.

In the area of the recording end 14 can the adapter 6 wall outside in a cross section transverse to the axis of rotation x be formed substantially as a square, for example, for applying a screwing tool, by means of which a piecing or lifting of the adapter 6 from the drive shaft 4 can be supported or brought about.

The above explanations serve to explain the inventions as a whole, which in each case independently further develop the prior art, at least by the following combinations of features, wherein two, several or all of these combinations of features may also be combined, namely:

A summary that is characterized in that the adapter 6 in the course of placing on an associated end of the drive shaft 4 relative to the drive shaft 4 around its axis of rotation x to twist.

A summary, characterized in that the rotation takes place against a winding direction.

A summary characterized in that the associated end of the drive shaft 4 over its length l as one around the axis of rotation x coiled polygon 11 is trained.

A summary characterized in that a recording end 14 of the adapter 6 for the associated end of the drive shaft 4 as one around the axis of rotation x helical hollow polygon 16 is trained.

All disclosed features are essential to the invention (individually, but also in combination with one another). The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize, even without the features of a claimed claim, with their features independent inventive developments of the prior art, in particular in order to make divisional applications based on these claims. The invention specified in each claim may additionally have one or more of the features described in the preceding description, in particular with reference numerals and / or given in the reference numerals. The invention also relates to design forms in which individual of the features mentioned in the above description are not realized, in particular insofar as they are recognizable dispensable for the respective purpose or can be replaced by other technically equivalent means.

LIST OF REFERENCE NUMBERS

1

ratchet

2

ratchet lever

3

attachment portion

4

drive shaft

5

ratchet gear

6

adapter

7

winding shaft

9

drive end

10

flange

11

polygon

12

head Start

14

receiving end

16

Hollow polygonal

a

edge length

l

length

r

Aufdrehrichtung

x

axis of rotation

α

Aufdrehwinkel

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

• DE 102015007288 A1 [0003]

Claims (5)

Summary of a winding shaft (7) for a motor vehicle trim, the foot has an adapter (6), with a rotation axis (x) having drive shaft (4) of a ratchet (1), wherein an adapter end (14) with a free end of Drive shaft (4) cooperates positively, characterized in that the adapter (6) in the course of placement on an associated end of the drive shaft (4) relative to the drive shaft (4) about its axis of rotation (x) to rotate. Summary after Claim 1 , characterized in that the rotation takes place counter to a winding direction. An assembly according to any one of the preceding claims, characterized in that the associated end of the drive shaft (4) is formed over its length (l) as a polygon (11) wound around the axis of rotation (x). 9. Summary according to one of the preceding claims, characterized in that a receiving end (14) of the adapter (6) for the associated end of the drive shaft (4) as a about the axis of rotation (x) helical hollow polygon (16) is formed. Summary, characterized by one or more of the characterizing features of any one of the preceding claims.

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