DE1967503U - FRONT SEAL FOR EARTH ROTATING PARTS. - Google Patents

Description

P.A. 171231 * 3/29/67

PATENT ADVOCATE Dipl-Inq. KARL SCHMIDT

Telephone 28 7O

Postal check account 1 Frankfurt CMain ^ 1389

Bank details: Nassauische Sparkasse main branch Frankfurt CMain} Account no. 14 000 55

Your drawing

Regards

Your letter of

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Gm 6706

FRANKFURT AM MAIN

Rossmarkt 15 a

28 March 1967

V ₉ , Gallino S, p * A _#

15 Via Torino, Eegina Margherita TURIN, Italy

See / set

Face seal for parts that can rotate relative to one another *

The invention relates to face seals for one « other rotating parts ^ mainly for use heavy vehicles such as tractors and the like, and concerns in particular seals, which consist of two equal, in the one against the other parts to be sealed opposite provided recordings symmetrically to each other arranged parts exist.

The invention namely provides a face seal of simple, durable and inexpensive design, in which Turn the sliding links on the seal body are firmly anchored, where the sliding limb of the movable before sealing part under the strictest operating conditions is entrained even at higher temperatures, with the abrasive sealing members higher on their The entire area is exposed to evenly distributed loads, resulting in uniform wear and result in a perfect seal.

The mirror-like sealing members each consist of a rigid sheet metal holder with a cylindrical jacket, a flat bottom and an outer flange, as well as a ring made of flexible material with a cylindrical j on the cylindrical holder part attached jacket and a flat part, which extends radially and on the outer surface has a receptacle in which a sealing ring is vulcanized, with between the flat part of the flexible Sheath and the flat holder base a cup-shaped

Spring is arranged that the sliding sealing ring to the corresponding ring of the other sealing member presses *

A front coupling is shown in accordance with the holy drawing the invention shown for example »

In the drawing, A denotes a shaft on which a part B is keyed, C a part opposite to part B and loosely arranged around shaft A, wherein parts B and C can rotate in relation to each other *

Between the opposite surfaces of the parts to be sealed B and C there is a gap D * The seal is The purpose now is to protect the space D against the ingress of lubricating oil from the shaft bearing or of foreign bodies.

The mutually identical, symmetrical in annular receptacles provided on the opposite parts B, G arranged sealing halves each comprise a sheet metal shell serving as a holder with an abutment 2 for

Limiting the depth of entry of the seal into the receptacle having, cylindrical jacket 1 and a flat bottom 3 _#

Furthermore, the sealing members each have an insert made of a flexible material such as artificial rubber or the like 4 with a cylindrical vulcanized onto the holder jacket 1 Sheath 5 and a radially extending, flat one Part 6, which runs essentially parallel to the shell bottom 3 »

The flat part 6 of the flexible insert k has an edge 7, which is directed against the other coupling member and forms with the remaining part of the insert a cavity 9 of a material of higher surface hardness, such as sintered metal od _# like _# a grinding seal ring takes up »The ring is vulcanized onto the insert.

The inner edge of the flat part 6 of the resilient one « set has an elevation 8 on which a cup-shaped spring 10 sits, which look at the base 3 of the neck

supports and exerts an axial thrust on the resilient insert, whereby the two sealing rings 9 against one another to be pressed »

Due to the cup-shaped spring, the axial thrust is applied to the Total surface of the sealing rings 9 evenly distributed, whereby a perfect seal is achieved with uniform wear «

The vulcanization of the sealing ring 9 on the insert h prevents slipping between the holder and the ring, whereby the relative movement of the rings is guaranteed with perfect behavior and increased service life of the seal *

The seal can with the ingress of foreign objects between the rotating parts must be equipped with protective means.

In the embodiment shown, the protective means consist of two mirror-like hoods 11, 13 'which are placed on the flanges 2 the holder of the two coupling links tendon-like

~ 6

are placed and with annular projections 12, 14 are provided, which fit into one another and form a labyrinth to prevent the entry of foreign objects.

Protection claims

Claims (1)

RA-171231 * 3/29/67 Eye protection requirements 1 * forehead seal for two parts that can rotate relative to one another, characterized in that the two mirror-like coupling members each consist of one rigid, a zylinderföriaigen jacket (l) and a flat bottom (3) having jacket, as well as from one Insert (4) made of flexible material with a cylindrical shell (l) on the holder attached jacket (5) and a flat, radially running, on the outer surface having a receptacle Part (6) in which a sliding sealing ring (9) is vulcanized, with one between the flat Part (6) of the insert (4) and the flat bottom (3) switched on cup-shaped spring (10) the grinding Press the sealing ring (9) onto the corresponding ring of the other coupling link * 2 _# Seal according to claim 1, characterized in that the holders of the two mirror-like coupling members each have a flat surface (2) which abuts against the outer edge of a receptacle for the coupling members. 3 «Seal according to claim 1 and 2, characterized in that the holder hoods (11, 13) are placed on the outer flanges (2), the annular projections (12, 14) of which cooperate to prevent foreign bodies from entering between the
Forming a labyrinth to prevent parts of the pipe *