DE1915746U - ROLLER OR NEEDLE BEARING CAGE MADE OF PLASTIC. - Google Patents

Description

Double piece

P.A.12W0M

D.3.65

DÜRKOPP

Roller or needle roller bearing cage made of plastic

The innovation is one of two symmetrically arranged Karam cages with bars parallel to the cage axis existing plastic cage for roller or needle roller bearings. Such composite plastic cages are known and the The two parts are usually connected by means of in the dividing plane intended cramping means in Shape of projections tind depressions or serrations that when plugged together of the two comb cages interlock.

For composite ball bearing cages, it is known that the interlocking Clamping parts in alternating order as part of the cage outer resp. Form cage inner jacket and it is also known a metal cage in which the two comb cages are completely inserted into one another, so that the one comb cage the outer shell of the cage and the other the Cage inner shell forms. In this case they are used to ensure cohesion the nested comb cages threaded pins are provided.

Plastic comb cages held together by molded clamping means are problematic if the material cross-section of the cage bars is small, as z.H. in cages for needle roller bearings is the case regularly. Additional securing means, such as threaded pins or the like are for plastic cages also not suitable.

12-3-80

date

9.3.65

Wd 600S

Name GP / Pr

DÜRKOPP

In a known plastic cage which is also suitable for needle roller bearings and consists of a Comb cage and an end ring pressed into it is an additional one Securing by welding or gluing is provided, but the areas that can be used for this construction are for the use of modern plastic welding methods, e.g. by means of ultrasound, and also for the application of adhesives unsuitable or insufficient, so that it is, as in the publication, too it is repeatedly noticed that it is just an additional safeguard.

The innovation has set itself the task of one consisting of two comb cages To create a plastic cage for roller or needle roller bearings in which a secure connection of the two parts is done exclusively by welding or gluing, where possible large connecting surfaces are to be created. For this purpose, the innovation provides that the webs of the comb cages at their free ends with in alternating order, in relation to the bars of each comb cage, or alternately, related atif the webs of one comb cage opposite the webs of the other comb cage forming part of the cage outer or inner shell Sections are provided at which after the two cages have been joined together radially superposed surfaces the union by welding or gluing he follows. For the axial alignment of the two comb cages, the web sections can be attached to the cooperating surfaces be provided with profiles that fit into one another and in addition, the outer and inner cage shells in the area of the nested Web sections have shallow recesses.

12, -3-8O

date

9.3.65

.Surname

GP / Pr

iSltoWIOOO Wd 6008

DURKOPP

1 Pig. 2 Fig. 3 Whistle. Fig. ? 6th

The drawing illustrates the subject of the innovation with the aid of some exemplary embodiments,

is a partial longitudinal section and

a partial cross section through a needle bearing cage;

is a fragmentary perspective view of the two comb cages prior to Add to animations;

is a cross-section through a cage bar at the junction, drawn on an enlarged scale;

a modified cross-section accordingly Fig. 4 and

a partial longitudinal section through a roller or roller bearing with fixed Flanges on the outer race.

The cage according to FIGS. 1 and 2, which is suitable for a needle bearing, consists of two identical comb cages 1 and 1 ^f with an even number of webs 2 and 2 ", which are evenly distributed over the circumference. The webs 2 and 2 ¹ are provided at their free end with a section or 3 'which is reduced to approximately half the web thickness and which is part of the cage outer shell and the cage inner shell in alternating order. When the two comb cages 1 and 1 ♦ are put together, a web 2 with a section forming the cage outer frame and a web 2 with a section forming the cage inner jacket, and vice versa, are brought together. A suitable adhesive can be applied to the surfaces of the web sections 3 or 3 'that come to lie radially on top of one another when they are plugged together, or the two comb cages are joined after they have been plugged together

12-3-80

date

9.3.65

Name GP / Pr

DÜRKOPP

by welding, also in the area of the radially superposed surfaces of the web sections 3 and 3 ^f . The relatively small wall thicknesses in the area of the ■ connecting surfaces enable the use of the ultrasonic method.

So that no adhesive may leak out at the abutting edges of the connection points Projecting beyond the jacket or bore surface of the cage, the cage outer and - inner jacket in the area of the nested Web sections can be provided with flat recesses 4 and 4 '. at When using ultrasonic welding, these recesses can optionally be dispensed with.

On the comb cages 1 and 1, shown diagrammatically in FIG. 3, the design is the cage bars 2 or 2 · and in particular the connection ^ sections 3 or 3 'better as can be seen in FIGS. 1 and 2. Deviating from the illustrated embodiment it is of course also possible to excite two different comb cages, their Web sections 3 and 3 'each lie on the outer and inner cage walls. Such a design is necessary if the number of ridges is odd Number is.

The Pig. 4 and 5 show configurations of the web sections 3 and 3 'with profiles for aligning the comb cages when they are put together. According to FIG. 4, the respective inner web section 3 or 3 'a rib 5 running parallel to the web and the one on the outside Web section 3 or 3 'a matching groove-like recess. According to FIG. 5, the

12-3-80

date

9.3.65

, Surname

G P / Pr

α; ΪΡΒ034β41000 Wd 6009

«Af2W8J.1i3.65

DÜRKOPP

Web sections 3 and 3 'on the connecting surfaces wave-shaped.

6 shows a roller or roller bearing with an outer race 6 with solid rims 7. The two comb cages 1 and 1 'are in this version in The area of the webs 2 or 2 'is thicker than in the area of their edge rings. The assembly of the cage happens in such a way that first the comb cage 1 'in the race is introduced, wherein the webs 2 'give way inward and after passing of the board 7 spring outwards again due to the material properties. The comb cage 1 is then in the same. Veise introduced and after Aligning the two comb cages, the welding takes place, in which the web sections 3 »3 'against the outer ring raceway and then spring back again. The rollers 8 are after the assembly of the cage from the bore side into the Cage pockets snapped into place.

Protection claims

12-3-80

date

9.3.65

Name GP / rr

* i> -08034941000 Wd 6008

Claims (1)

Protection claims: 1.) Roller or needle bearing cage made of plastic, consisting of two symmetrically arranged comb cages with parallel to the cage axis directed webs, characterized in that the webs of the Karam cages on their free ends with in alternating order, based on the bars of each comb cage, or alternately, based on the webs of a comb cage opposite the webs of the other comb cage, part of the cage outer or cage inner shell forming sections are provided on which after the two cages have been plugged together surfaces lying radially one on top of the other, the union by set-white or gluing he follows. 2.) roller or needle bearing cage according to claim 1, characterized in that the web sections Provided with interlocking profiles on the interacting surfaces are. 3.) Roller or needle bearing cage according to claim 1 or 1 and 2, characterized in that the outer and / or inner shell of the cage has shallow recesses in the area of the nested web sections. 12-3-80 date 9.3.65 Name GP / Pr 1000 Wd 6009