DE1048749B - Overload clutch with a star-shaped arrangement of elastically trimmed drivers, especially for agricultural machinery - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

PATENT LETTER 1 048

REGISTRATION DAY:

NOTICE
THE REGISTRATION
AND ISSUE OF
EDITORIAL:

ISSUE OF
PATENT LETTERING:

kl. 47c 8

INTERNAT. KL F 06 d 29 JUNE 1956

15 JANUARY 19 5 9 JULY 9, 1959

agrees Oberein with an explanatory document

1 048 749 (W 19336 XII IiTc)

The invention relates to an overload clutch with star-shaped, elastically supported drivers, especially for agricultural machinery. Such couplings with radially displaceable in the hub-shaped inner coupling part and in recesses of an outer coupling part rotatably mounted on the inner coupling part engaging drivers are known. The manufacture of such overload clutches was previously cumbersome and expensive due to the depressions on the inner wall of the outer coupling part, the evenly distributed over the circumference and must be manufactured with great accuracy. This required a high manufacturing effort. The known designs of such couplings had also a high weight, whereby not only the price was adversely affected, but. also the practical one Use was limited. .

According to the invention, the overload clutch is used as a casing part a tubular or cup-shaped drawing body is used, the wall of which has several on the Circumferentially evenly distributed curve-shaped elevations with an approximately uniform wall thickness forms and which interacts directly with the drivers elastically supported on the inner part. According to a further feature of the invention, the open side of the cup-shaped casing part is closed and sealed by several washers, which are circular inside and outside are curved in such a way that they are with the required tolerance in the drawing body trained shell part can be inserted and seal this sealingly, with an annular disc is made of elastic material. In the vicinity of the open end can in the shell part Be screwed in the ring groove, which only cuts the inwardly protruding wall parts and in which a radially resilient clamping ring is used, which holds the ring disks axially. According to the invention can the shell part, designed as a tubular or cup-shaped drawn body, with a coupling part, which forms a joint fork, be welded.

The overload clutch according to the invention can be produced very easily and inexpensively. Through the Use of a drawn body in the shape of a tube or pot, the wall of which is approximately more even Wall thickness forms the curved elevations evenly distributed on the circumference, is the otherwise costly processing of the shell part is saved. This can be done without significant additional costs Draw the pipe in the required profile with sufficient accuracy. The proposed waterproofing the open side of the shell part with the ring disks adapted to the profile of the shell and a radial overload clutch

with star-shaped,

elastically supported drivers,

especially for agricultural machinery

Patented for:

Bernhard Walterscheid-Müller,

Lohmar (Siegkr.),

and Kurt Schröter,

Herkenrath near Bergisch Gladbach

Bernhard Walterscheid-Müller, Lohmar (Siegkr.),

and Kurt 'Schröter, Herkenrath near Bergisch Gladbach, have been named as inventors

resilient clamping ring provides a reliable seal and ensures easy assembly. If the shell part is made up of sections of a corresponding profiled, drawn pipe is produced, can be welded on such a pipe section to 'a coupling part designed as a joint fork, an easy and economical to manufacture Achieve construction.

Another advantage of the design of the coupling according to the invention is to be seen in the fact that the uniform low wall thickness of the shell part a good and therefore quick derivation of the overload process ensures frictional heat occurring at this point. The uniform wall thickness prevents Heat accumulation, and the corrugated outer surface promotes the ventilation effect of the surrounding Coupling.

The object of the invention is in one embodiment shown in the drawing.

Fig. 1 shows an overload clutch according to the invention in side view, partly in section;

2 and 3 show the casing part of the coupling in longitudinal and cross-section;

4 shows the washer used to close off the open side of the casing part;

Fig. S and 6 show the annular sealing washer together with the associated support ring.

The coupling part 1, designed as a joint fork, is welded to the casing part 3. The latter is as

: 909 553/129

i U4Ö / 4y

Drawn part and forms with its wall the elevations and depressions on the inside required for the engagement of elastically supported drivers 8 with an approximately uniform wall thickness. The drivers 8 are pressed radially outward against the casing part 3 by springs 13 in their guides arranged in a star shape. The inner coupling part 2 is hub-shaped and carries the guides for the driver 8. The open end of the casing part 3 is provided with an annular groove which only cuts the inwardly protruding wall parts. In this groove a radially resilient clamping ring 12 is used, which holds the annular disks 5, 6, 7 axially. The latter have a circular opening on the inside and are curved on the outside in such a way that they can be pushed into the casing part 3 with the required tolerance, but in a sealing manner. The ring washer 7 is made of elastic material, for example a butadiene-acrylonitrile-Misdhpolymerisat, and is located between the ring washers 5 and 6 made of steel, whereby the housing of the overload clutch is properly sealed.

Claims (4)

Patent claims: 1. Overload clutch with star-shaped, elastically supported drivers, which are radially displaceable in the hub-shaped inner coupling part and in recesses of the rotatably mounted on the "inner coupling part intervene external coupling parts, characterized by the use of a pipe or cup-shaped drawing body, the wall of which is evenly distributed over the circumference forms curved elevations with an approximately uniform wall thickness as a shell part (3), which interacts directly with the drivers (8), which are elastically supported in the inner part. 2. Overload clutch according to claim 1, characterized in that the open side of the cup-shaped casing part (3) is completed and sealed by several annular disks (5, 6 _} T) which are circular on the inside and curved on the outside in such a way that they can be pushed with the required tolerance into the casing part, which is designed as a drawn body, and seal it tightly, an annular disk being made of elastic material. 3. Overload clutch according to claim 2, characterized in that inside the casing part (3) in the vicinity of the open end an annular groove is screwed, which cuts only the inwardly projecting wall parts and wherein a radially resilient clamping ring (12) is used, which the ring disks (S ₁ 6 _} T) holds axially. 4. Overload clutch according to claim 1, characterized in that the tubular or pot-shaped Sheath part (3) designed as a drawn body and designed as a joint fork (1) Coupling part is welded. 1 sheet of drawings © 809729/159 1.5 » (909 553/129 7. 59)