WO2008064876A2

WO2008064876A2 - Holding device for a rim of a vehicle wheel

Info

Publication number: WO2008064876A2
Application number: PCT/EP2007/010320
Authority: WO
Inventors: Dirk Warkotsch
Original assignee: Haweka Ag
Priority date: 2006-11-29
Filing date: 2007-11-28
Publication date: 2008-06-05
Also published as: DE102006060148B4; DE102006060148A1; WO2008064876A3

Abstract

Disclosed is a holding device (1) for a rim (14) of a vehicle wheel, comprising a base plate (2) that has a central recess and is to be slid onto the shaft of a balancing machine, and a plurality of holding elements (4) which are rotatably mounted on the base plate (2). Each holding element (4) is connected to at least one holding means (7) that extends parallel to and is arranged eccentric to the axis of rotation (X) of the holding element (4). At least one coupling means is provided for kinematically coupling the holding means (7). According to the invention, a control plate (5) that has a plurality of guiding slots (13) and another central recess (8a) is provided as a coupling means. The holding elements (4) are disposed between the base plate (2) and the control plate (5) while the holding means (7) are guided outward through the guiding slots (13), the holding means (7) being kinematically coupled by guiding the same (7) within the guiding slots (13).

Description

Holding device for a rim of a vehicle wheel

The invention relates to a holding device according to the preamble of claim 1.

5

From US 4 070 915 a holding device for a rim of a vehicle wheel is known in which the rim is attached directly to the device. The known device comprises a base plate having a plurality of the same mutual circumferential distance and at the same radial distance to a lo central recess of the base plate and mounted on the base plate holding elements, wherein each holding element has an eccentrically mounted threaded bolt for attachment of the rim to the device , For positive coupling of the rotational movement of the holding elements is arranged coaxially to the central recess of the base plate and on the

15 base plate provided rotatably mounted gear. The gear wheel is toothed in sections on its peripheral surface, wherein the toothed portions of the gear mesh with toothed portions of the retaining elements. By turning the gear wheel, it is possible to adjust the radial distance of the threaded bolt to the central recess in the base plate and the mutual circumferential clearance of the threaded bolts simultaneously and in the same direction.

From DE 26 19 618 Al a wheel mount for a Radauswucht- or a tire changing machine with a for receiving a rim of a wheel-5 nenden rotatably mounted support plate is known. On the support plate satellite wheels are rotatably mounted at the same radial distance from the axis of rotation of the support plate, wherein a Zentralradgruppe is provided for coupling the rotational movement of the satellite wheels. The Zentralradgruppe meshes with all satellite wheels. When one of the satellite wheels is rotated, wheel mounting bolts, located at the end of satellite arms connected to the satellite wheels, are displaced over the central wheel group on circles concentric with the axis of rotation of the carrier plate.

From DE 10 2004 052 554 A1, a device of the type mentioned in the introduction is moreover known, wherein the holding elements are in the form of disk-shaped satellites. Litenräder are formed, which cooperate with a coaxial with the central recess and rotatably mounted on the base plate sun gear and form a planetary gear. The satellite wheels have eccentrically arranged to the axis of rotation pressure pin, which are designed for central locking in a complementary shaped mounting hole of a rim.

Object of the present invention is to provide an alternative embodiment of a holding device of the type mentioned above, with a simultaneous and co-directional adjustment of the holding means in a simple manner with little effort and high stability of the device is possible.

To achieve the above object, a holding device with the features of claim 1 is proposed. The coupling of the adjustment movements of all holding means via a control plate allows simultaneous and co-movement adjustment of the holding means with little effort to the radial distance of the holding means to the central recess in the base plate and the circumferential distance of the holding means to each other on rims with different large pitch circle diameter to be able to adjust the rim holes in a simple manner. The guide slots can preferably be provided opposite in the control plate, wherein the number of guide slots further preferably corresponds to the number of holding means. Moreover, the control plate has a further central recess, so that the postponement of the holding device on the shaft of a balancing machine is readily possible.

In a particularly preferred embodiment of the invention it is provided that the control plate is rotatably arranged relative to the base plate and rotatably connected to the base plate. By the positive guidance of the holding means in the guide slots of the control plate and by the eccentric arrangement of the holding means on the rotatably mounted on the base plate holding elements a simultaneous and co-movement adjustment of the holding means is effected by rotating the control plate, each holding element due to the kinematic coupling over a certain angle is rotated about its axis of rotation. The Last described embodiment is characterized by a simple structure with high stability of the holding device.

In a further preferred embodiment, a further coupling means is provided for coupling the adjusting movements of all holding means. In this embodiment, therefore, the kinematic coupling of all holding means is effected on the one hand by the control plate and on the other by the further coupling means, which contributes to a further increase in the stability of the holding device according to the invention and at the same time allows easy adjustment of the radial distance of the holding means with little play. As a further coupling means, a central gear can be provided, wherein each holding element has a cooperating with the central gear satellite wheel. The central gear and the satellite wheels form a planetary gear, wherein the holding means is arranged eccentrically to the axis of rotation of the satellite wheel. If it is provided that the control plate must be rotated relative to the base plate for adjusting the holding means, the central gear may be rotatably connected to the base plate or with the control plate. Opposite the other plate, the central gear is then rotatably mounted. In principle, it is also possible that the central gear is rotatably mounted with respect to both plates, which in principle allows that with a suitable design of the guide slots, the control plate is rotatably connected to the base plate. In this case, an adjustment of the holding means can be effected for example by rotating the central gear.

The guide slot may have, at least in sections, an arcuate shape that is preferably approximated by a polynomial, whereby the shape or contour and the length of the guide slot result from the necessary adjustment path of the holding means when setting the holding device on rims having a different rim hole diameter. The guide slots must have such a shape or contour and length that a simultaneous and same-direction adjustment of the holding means is ensured between a minimum radial distance to the (further) central recess and a maximum distance from the recess. This makes it possible to adjust the position of the holding means on rims with different sizes rim hole diameters. In principle, it is also possible that radially outwardly extending substantially straight slots are provided. Also, the guide slot be at least partially circular arc. For example, if it is provided that the control plate and the base plate are rotatably connected to each other, wherein an adjustment of the holding means can be made by rotating the central gear relative to the plates, the guide slot has a circular arc shape, wherein the guide slot via a circular arc with the Length L = π ^• r -≤-, where r is the radius of the circular arc and α is the mean

180 °. point angle. Preferably, the center angle α has a value greater than or equal to 180 °. This makes it possible to adjust the radial distance of the holding means to the (further) central recess and the circumferential distance of the holding means to each other in large areas.

The guide slot can extend radially outward from an inner end point, adjacent to the central recess, of the guide formed by the guide slot to an outer end point of the guide. Upon reaching the inner end point, the holding means are preferably set to a minimum rim hole diameter. When adjusting the holding means along the guide slots, however, a radial distance of the holding means of the (further) central recess is achieved at the outer end point of the guide, which preferably corresponds to a maximum rim hole diameter. If semicircular guide slots are provided, the two end points of the guide and the center of the central recess can be arranged on a common straight line to ensure a maximum displacement of the holding means.

In order to simplify the assembly of the holding device according to the invention, the holding element may have an eccentric to the axis of rotation of the holding element arranged bolts and a releasably connectable with the pin Andruckkappe. As a result, it is readily possible to place the control plate with the guide slots on the holding elements, wherein the bolts pass through the guide slots and the pressure caps are placed on the bolts from the outside. The Andruckkappen may be spring loaded to allow a secure abutment against a rim.

Is to further coupling the adjusting movements of all holding elements a piano netengetriebe provided with satellite wheels of the holding elements with a

Actuate central gear, the holding element as a ridge-shaped satellite be formed litenarm, wherein the holding means at the free end of the satellite arm and the satellite gear is arranged coaxially to the axis of rotation of the satellite arm and rotatably connected to the satellite arm. In principle, it is also possible that the holding element is disc-shaped, wherein also here the holding means is arranged eccentrically to the axis of rotation of the holding element.

The holding element may be formed as a plate-shaped, elongated pivot lever, wherein the maximum pivot angle is limited by the length and / or the shape of the guide slot. In this case, a pivoting angle of less than or equal to 180 ° is already sufficient in order to be able to set the radial distance of the holding means from the (further) central recess to a minimum or maximum rim hole diameter. It is understood that the pivot angle can also be greater than 180 °.

The interlocking coupling between the satellite wheels and the central gear is always subject to a game due to tolerances of production, to reduce the game between the meshing sprockets of the satellite gear and the central gear at least one friction means can be provided. By way of example, the satellite wheel and / or the central toothed wheel may have at least one circumferential groove in which an O-ring is inserted.

In addition, a locking device may be provided for on-demand fixing of the holding elements. The locking device may comprise a locking means for frictional or positive locking of the central gear and / or for detecting at least one holding element and / or the control plate. For example, it is possible that the locking means is arranged coaxially to the central gear and is adjustable in the axial direction to the central gear, wherein by adjusting the locking means in the axial direction of the central gear with a sufficient holding force for locking can be acted upon. In this connection it can be provided that the locking means acts directly against the central gear and / or that the central gear is pressed against a fixed stop surface of the holding device, so that further rotation of the central gear is not possible. It is equally possible that the locking means acts against at least one retaining element and / or against the control plate, so that after fixing a further rotation of the holding means or the control plate is no longer possible. In particular, there are a variety of ways to design and further develop the holding device according to the invention, reference being made on the one hand to the dependent claims and on the other hand to the following description of a preferred embodiment of the invention with reference to the drawings. Moreover, the invention makes it possible, if necessary, to combine the features disclosed and described below with reference to the drawings, even if this is not described in detail. In the drawing show

Fig. 1 is a schematic exploded view of an inventive

Holder,

2 to 4 are schematic representations of the assembly sequence of the holding device shown in FIG

Fig. 5, the holding device shown in Fig. 1 in the assembled state when pressed against a rim of a vehicle wheel in a further schematic representation.

In Fig. 1, a holding device 1 is shown, which has a base plate 2, a central gear 3, a plurality of holding elements 4 and a control plate 5. In addition, Andruckkappen 6 are shown, which are connectable with designed as a pressure pin holding means 7. The Andruckkappen 6 are preferably spring-loaded and can be plugged onto the holding means 7. The holding means 7 are detachably or non-detachably connected to the holding elements 4. The retaining element 4 and the retaining element 7 can also be formed in one piece. The base plate 2 has a central recess 8 and the control plate 5 a further central recess 8a, which allow the sliding of the Haltevorrich- device 1 on the shaft of a balancing machine, not shown. The holding elements 4 are rotatably mounted on the base plate 2, wherein each holding means 7 is arranged eccentrically to the axis of rotation X of a holding element 4.

The holding elements 4 are fastened by means of bolt-shaped extensions 10 on the base plate 2, wherein the extensions 10 in openings 9 in the base plate. 2 engage and can be screwed on the back of the base plate 2 with nuts, not shown. It must be present after screwing the support members 4 with the base plate 2, a sufficiently large game to allow the rotation of the support members 4 about the axes of rotation X.

In addition, each retaining element 4 a satellite wheel 1 1, wherein the satellite wheels 1 1 interact with the central gear 3 in the manner of a planetary gear. The holding element 4 is designed as a web-shaped satellite arm 12, wherein the holding element 7 is arranged at the free end of the satellite arm 12 and the satellite wheel 1 1 coaxial with the axis of rotation X of the satellite arm 12. The satellite wheel 1 1 is rotatably connected to the satellite arm 12. The satellite arm 12 and the satellite wheel 1 1 may be integrally formed.

During assembly of the holding device 1, the holding elements 4 are pushed with the holding means 7 by guide slots 13 in the control plate 5, wherein in the assembled state of the holding device 1, the holding elements 4 between the base plate 2 and the control plate 5 are arranged and wherein by the leadership of the holding means 7 in the guide slots 13 all holding means 7 are kinematically coupled or simultaneously and in the same direction adjustable. As a result, the control plate 5 is a first coupling means for coupling the adjusting movements of the holding means 7.

In order to adjust the radial distances of the holding means 7 to the other recess 8a on rims with different bolt diameter, it is provided in the illustrated holding device 1, the control plate 5 about the longitudinal axis Y relative to the base plate 2 to rotate, wherein the holding means are forcibly guided in the guide slots 13. By the rotatable mounting of the lever-like holding elements 4 between the base plate 2 and the control plate 5 and by the leadership of the holding means 7 in the guide slots 13 is a stable and easy adjustment of the holding means 7 when setting the holding device 1 on the pitch circle diameter of a rim fourteenth allows.

The central gear 3 is provided as a further coupling means in the holding device 1, wherein the central gear 3 screwed to the control plate 5 and thus can be rotatably connected. In principle, it is also possible that the central gear 3 is rotatably mounted relative to both plates 2, 5. In the result, the holding device 1 on a double kinematic coupling of the holding means 7, namely on the one hand by the leadership of the eccentrically mounted holding means 7 in the guide slots 13 of the control plate 5 and the other by the gear assembly of central gear 3 and satellite wheels 1 1. This is the stability the holding device 1 further increased and allows a very accurate setting of the holding means 7 to a predetermined pitch circle diameter of a rim 14 with little effort.

The guide slots 13 are arc-shaped and extend in a radial direction from an inner end point 15 of the central recess adjacent the guide formed by the guide slot 13 outwards to an outer end point 16 of the guide. The end points 15, 16 set the maximum displacement of the holding means 7, wherein in the illustrated embodiment, the holding device 1 of each holding element 4 can be pivoted by the length and shape of the guide slots 13 through an angle of approximately 180 °. As a result, the satellite arms 12 are pivoted levers, the maximum pivot angle being determined by the position of the end points 15, 16 of a guide slot 13 and by its shape or contour.

The assembly of the holding device 1 will be explained with reference to FIGS. 2 to 4 below. First, the bolt-shaped holding means 7 of the holding elements 4 are pushed through the guide slots 13 and the Andruckkappen 6 then attached to the holding means 7. As a result, the holding elements 4 are held captive on the control plate 5. The diameter of the holding means 7 is only slightly smaller than the width of the guide slots 13, so that a largely play-free coupled adjustment of the holding means 7 when turning the control plate 5 is possible.

Subsequently, the central gear 3 is positioned on the base plate 2 and the control plate 5 is lowered with the holding elements 4 on the base plate 2. The projections 10 engage in the openings 9 in the base plate 2 and there is a positive coupling of the satellite wheels 1 1 with the central gear 3. The holding elements 4 are secured with the projections 10 on the back of the base plate 2 by means not shown screws, wherein after screwing a sufficient clearance must remain to ensure the rotation of the holding elements 4 about the axes of rotation X. It is not shown in detail that the control plate 5 is held rotatably about the longitudinal axis Y on the base plate 2 and is rotatably arranged relative to the base plate 2. It is understood that corresponding means may be provided to reduce the sliding friction between the mutually rotatable parts of the holding device 1. Preferably, it is further provided that the central gear 3 fixedly connected to the control plate 5, for example, is screwed, wherein the central gear 3 is rotatably mounted on the base plate 2. The central gear 3 is then rotated together with the control plate 5 about the longitudinal axis Y, wherein the adjustment of the holding means 7 is effected on the one hand by the guide slots 13 in the control plate 5 and on the other by the coupling of the central gear 3 with the satellite wheels 1 1. Thereby, the game when adjusting the holding means 7 can be reduced.

In Fig. 5, the holding device 1 is shown in the assembled state, wherein the holding device 1 is pressed against the rim 14 of a vehicle wheel. In the holding position shown in FIG. 5, the pressure caps 6 act against the edges of the rim holes 17. For this purpose, it is necessary to reduce the radial distance of the holding means 7 from the central recess 8 or the further central recess 8a to the pitch circle diameter Set rim holes 17. In order to fix the holding means 7 in this position, a not shown locking means may be provided.

Claims

claims:

1. holding device (1) for a rim (14) of a vehicle wheel, with a central recess (8) having base plate (2) for sliding onto the shaft of a balancing machine and with a plurality of pivotally mounted on the base plate (2) and as Pivoting lever formed holding elements (4), wherein each holding element (4) at its free end at least one parallel to the axis of rotation (X) of the holding element (4) extending eccentrically to the axis of rotation (X) of the holding element (4) arranged holding means (7), wherein the holding means (7) are provided for bearing against the rim (14), wherein at least one control plate (5) for kinematic coupling of the holding means (7) is provided and wherein the control plate (5) has a plurality of guide slots (13) and a further central recess (8a), characterized in that the holding elements (4) substantially completely between the base plate (2) and the control plate (5) arranged and the Hal means (7) are guided through the guide slots (13) through to the outside, wherein the holding means (7) guided in the guide slots (13) and are kinematically coupled by the guide in the guide slots (13).

2. Holding device according to claim 1, characterized in that the control plate (5) relative to the base plate (2) is rotatably arranged.

3. Holding device according to claim 1 or 2, characterized in that a further coupling means for coupling the adjusting movements of the holding means (7) is provided.

4. Holding device according to one of the preceding claims, characterized in that as a further coupling means, a central gear (3) is provided and that each holding element (4) has a with the central gear (3) interacting men satellite wheel (1 1).

5. Holding device according to one of the preceding claims, characterized in that the central gear (3) with the base plate (2) or with the control plate (5) is rotatably connected.

6. Holding device according to one of the preceding claims, characterized in that the guide slot (13) at least in sections has a curved genform.

7. Holding device according to one of the preceding claims, characterized in that the guide slot (13) in the radial direction of an inner of the further central recess (8 a) adjacent end point (15) formed by the guide slot (13) guide to the outside outer end point (16) of the guide extends.

8. Holding device according to one of the preceding claims, characterized in that the holding element (4) has an eccentric to the axis of rotation (X) of the holding element (4) arranged bolts and a releasably connectable with the pin Andruckkappe (6).

9. Holding device according to one of the preceding claims, characterized in that the holding element (4) as a satellite arm (12) is formed, wherein the holding means (7) at the free end of the satellite arm (12) and the satellite wheel (1 1) coaxial with the axis of rotation (X) of the satellite arm (12) is arranged.

10. Holding device according to one of the preceding claims, characterized in that the holding means (7) about the axis of rotation (X) of the holding element (4) is pivotable, wherein the maximum pivot angle by the length and / or shape of the guide slot (13) is limited ,

11. Holding device according to one of the preceding claims, characterized in that the maximum pivot angle is less than or equal to 180 °.

12. Holding device according to one of the preceding claims, characterized in that between meshing sprockets of the satellite wheel (1 1) and the central gear (3) is provided at least one friction means.

13. Holding device according to one of the preceding claims, character- ized in that a locking device for on-demand locking of the holding elements (4) is provided.

14. Holding device according to one of the preceding claims, characterized in that the locking device has at least one locking means for frictional or positive locking of the central gear (3) and / or for detecting at least one holding element (4) and / or the control plate (5).