Patent Application
20180172070
This application claims priority to German patent application No. 10 2016 124 699.9, entitled “Hülsenförmige Lageraufnahme für eine Kunststoffhülse”, and filed on Dec. 16, 2016 by the assignee of this application, the entire disclosure of which is incorporated by reference for all purposes.
The present disclosure relates to a sleeve-like bearing receiving member for a plastics material sleeve, in particular for an elastomer bearing in a plastics material sleeve.
In order to retain plastics material sleeves which retain elastomer bearings, there may, for example, be provided metal sleeves in which the plastics material sleeves are pressed. The retention of the plastics material sleeve by the sleeve-like bearing receiving member may be produced by means of a positive-locking closure between the plastics material sleeve and sleeve-like bearing receiving member. In order to increase the friction coefficient between the plastics material sleeve and sleeve-like bearing receiving member, a knurling may be formed, for example, on the inner side of the sleeve-like bearing receiving member. This formation may require an additional operating step so that the production time and production costs are significantly increased.
An object of the present disclosure is to provide a more cost-effective concept for increasing a force transmission of a mechanical connection, in particular for receiving a plastics material sleeve by means of a sleeve-like bearing receiving member.
This object is achieved by the features of the independent claims. Advantageous examples of the disclosure are set out in the dependent claims, the description and the appended drawings.
The disclosure is based on the recognition that the above objective can be achieved by a sleeve-like bearing receiving member which is formed by means of a sleeve with openings or apertures which are distributed over the periphery. In order to increase a friction coefficient, there are provided on the inner side of the sleeve collars which each border an opening. The apertures and the collars can be produced in a cost-effective manner in one operating step by means of a punching operation, wherein the collars are formed by punching burrs. The positive-locking connection between the sleeve-like bearing receiving member and the plastics material sleeve may further be improved by the relaxation of the material of the plastics material sleeve around the collars and in the openings.
According to a first aspect, the disclosure relates to a sleeve-like bearing receiving member for a plastics material sleeve, wherein the sleeve-like bearing receiving member has a cylindrical sleeve wall which delimits the inner side of the sleeve-like bearing receiving member, wherein a plurality of apertures are formed in the cylindrical sleeve wall, wherein each aperture is at least partially bordered by a collar which protrudes into the inner side of the sleeve-like bearing receiving member, and wherein the collars are configured to engage in the plastics material sleeve in order to retain the plastics material sleeve in the sleeve-like bearing receiving member.
As a result of the plurality of apertures in the cylindrical sleeve wall, a particularly advantageous weight saving is achieved. Furthermore, the material of the plastics material sleeve can relax into the openings, which further promotes the positive-locking connection between the plastics material sleeve and the sleeve-like bearing receiving member.
In an advantageous example of the sleeve-like bearing receiving member, the apertures are punched apertures, wherein the collars are formed by punching burrs. During the punching of the sheet metal bar piece which in a subsequent production step forms the sleeve-like bearing receiving member, the punched apertures and punching burrs which form the collars can be formed at the same time so that no additional operating step is required to form the punching burrs.
In an advantageous example, the sleeve-like bearing receiving member is formed by a clinched bar piece, in particular a sheet metal bar piece. The sleeve-like bearing receiving member can thereby be produced in a particularly cost-effective manner. The apertures and the collars can be produced before the clinching or after the clinching of the sheet metal bar piece.
In an advantageous example, the apertures of the sleeve-like bearing receiving member are formed over a periphery of the cylindrical sleeve wall.
In an advantageous example, the apertures of the sleeve-like bearing receiving member are arranged over a periphery of the cylindrical sleeve wall along a periodic grid.
In an advantageous example, the apertures of the sleeve-like bearing receiving member have the same diameter within a tolerance range. The deviation from the desired value of the diameter is, for example, below 5%.
In an advantageous example, the diameter of the apertures is smaller than the diameter of the sleeve-like bearing receiving member. The smaller the diameter of the apertures in relation to the diameter of the sleeve-like bearing receiving member, the more apertures can be formed on the cylindrical sleeve wall, wherein the collar length, totaled over all the apertures, also increases. This can contribute to the increase of the friction coefficient between the cylindrical sleeve wall and the plastics material sleeve.
In an advantageous example, there is formed in the cylindrical sleeve wall of the sleeve-like bearing receiving member another aperture whose diameter is greater than a diameter of an aperture of the plurality of apertures.
According to a second aspect, the disclosure relates to a bearing arrangement for a vehicle, having a resilient bearing which is arranged in a plastics material sleeve, and the sleeve-like bearing receiving member according to the first aspect and/or the associated advantageous examples, wherein the plastics material sleeve is arranged in the sleeve-like bearing receiving member.
In an advantageous example of the bearing arrangement, the plastics material sleeve is pressed into the sleeve-like bearing receiving member. In this manner, the positive-locking connection between the plastics material sleeve and the bearing arrangement can be produced in a particularly simple manner.
In an advantageous example of the bearing arrangement, the resilient bearing is an elastomer bearing or a rubber bearing.
According to a third aspect, the disclosure relates to a method for producing a bearing arrangement, having: provision of a bar piece, in particular a sheet metal bar piece; formation of a plurality of apertures in the bar piece in order to obtain a perforated semi-finished product, wherein in the step of forming the plurality of aperture collars are formed, wherein each collar at least partially borders an aperture and is orientated in such a manner that the collar after the subsequent shaping operation protrudes into the inner side of the sleeve-like bearing receiving member; shaping the perforated semi-finished product to form a sleeve-like bearing receiving member; and pressing a resilient bearing, in particular a rubber bearing or an elastomer bearing which is arranged in a plastics material sleeve, into the sleeve-like bearing receiving member in order to obtain the bearing arrangement.
In an advantageous example of the method for producing a bearing arrangement, in particular the bearing arrangement according to the first aspect, the shaping of the perforated semi-finished product involves clinching the perforated semi-finished product. The planar, perforated semi-finished product is thereby converted into a cylindrical shape and the ends of the perforated semi-finished product are connected in a positive-locking manner. The production of a steel sleeve by clinching is a cost-effective method compared with other methods.
Other features of the method will be appreciated directly from the features of the bearing arrangement according to the first aspect.
Examples of the principles of this disclosure are explained in greater detail with reference to the appended drawings.
In an advantageous example, the plurality of apertures 103 may be formed in a circular manner and/or be arranged with a fixed spacing along a diameter of the sleeve-like bearing receiving member 100.
The apertures 103 may be configured in several rows 113-1 to 113-5 and columns 115-1 to 115-4 along the cylindrical sleeve wall 101 so that a, for example, regular rectangular grid of apertures 103 is produced. The grid may, however, also be irregular.
The rows 113-1 to 113-5 of the apertures 103 may have a smaller spacing with respect to each other than with respect to the edges 119, 121 of the sleeve-like bearing receiving member 100.
In an advantageous example, the plurality of apertures 103 may form a regular, hexagonal grid along the cylindrical sleeve wall 101.
In an advantageous example, the apertures 103 may be formed in an irregular manner.
In an advantageous example, the plurality of apertures 103 may be subdivided into groups which in comparison with the spacing of the apertures 103 within a group, have a greater spacing between the groups.
In an advantageous example, one of the edges 119, 121 of the sleeve-like bearing receiving member 100 may be interrupted by a recess 117.
In an advantageous example, the plurality of apertures 103 are arranged in such a manner that there is no intersection between the apertures 103 and the edges 119, 121 of the sleeve-like bearing receiving member 100.
The plurality of apertures 103 is, for example, formed by means of a punching tool. This can be carried out in an operating step with the punching of the basic shape of the sheet metal bar piece.
Each aperture 103 is in this instance at least partially bordered by a collar 107 which protrudes into the inner side of the sleeve-like bearing receiving member 100. The plurality of collars 107 are marked by way of example by a selection. The positive-locking connection between the sleeve-like bearing receiving member 100 and plastics material sleeve 105 is preferably brought about by pressing the plastics material sleeve 105 into the sleeve-like bearing receiving member 100. This can be carried out using a pressing tool.
The collars 107 can after the pressing of the plastics material sleeve 105 engage in a positive-locking manner in the plastics material sleeve 105 and increase the retention between the plastics material sleeve 105 and sleeve-like receiving member 100.
In an advantageous example, the resilient bearing 201 may terminate in a positive-locking manner with the edge 119 and/or the edge 121 of the sleeve-like bearing receiving member 100.
In an advantageous example, there is a spacing between the termination of the resilient bearing 105 and the edges 119, 121 of the sleeve-like bearing receiving member 100.
The plastics material sleeve 105 often comprises plastics material for cost reasons. According to an advantageous example, the plastics material sleeve can be replaced by a metal sleeve.
The sleeve-like bearing receiving member may be part of a chassis component.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2016 124 699.9 | Dec 2016 | DE | national |
