DE102006056819A1 - Component e.g. gearbox, and mounted part e.g. engine block, connector for e.g. self-igniting internal combustion engine, has rubbing lacquer that is applied on flange surface outside sealant and arranged in area of fastening screw - Google Patents

Abstract

The connector has a component e.g. gearbox, that is screwed with a mounted part e.g. engine block, by a fastening screw (4) outside a sealant (2) e.g. metal sheet. A rubbing lacquer (3) is applied on a flange surface (1) outside the sealant. The rubbing lacquer is arranged in an area of the fastening screw. A groove (6) is attached to the flange surface between the sealant and the lacquer. The metal sheet is provided with a sealing compound in the area of a flange and includes passage holes for the fastening screw.

Description

The The invention relates to a connection of a component with an attachment over a flange, on the medium to be sealed a sealant and outside of the sealant bolted the component to the attachment via mounting screws is.

Such a compound is from the DE 10 2005 002 891 A1 known. Here, an oil pan of an internal combustion engine is described, which is cast from a ferrous material and has a circumferential flange surface with which the oil pan can be screwed with the insertion of a seal to the crankcase of the internal combustion engine.

Of the Invention has for its object to provide a connection, the for the transfer high shear or torsional forces is suitable.

These Task is solved by that on the flange surface outside the sealant is applied a friction varnish.

One Friction lacquer also includes To the paint components friction particles, which are responsible for increasing the coefficient of friction are. A friction varnish also serves to increase the friction coefficient Compounds in which there are difficult geometrical conditions on the increase the transferable friction arrives.

At An internal combustion engine may only use a friction varnish in places outside be applied to the engine, so that the friction particles in the paint not in the oil circuit reach. There would be they damage on the sliding surfaces cause.

Out For this reason, the friction varnish according to the invention on the flange outside applied to the sealant.

In Further development of the invention is the friction varnish in the region of the fastening screws or their Schraubenbutzen arranged, since there the pressure the highest is.

In Further embodiment of the invention, the friction coating surrounds the fastening screws or the screw studs. This is the friction coefficient maximized.

In Development of the invention is between the sealant and the Reiblack introduced a groove on the flange. hereby is a better separation of the sealant created by the friction varnish.

If the sealant is a metal sheet, which is in the region of the flange Both sides can be provided with sealing compounds and in the sheet passage holes for the mounting screws has, in one embodiment of the invention, the friction varnish arranged on the plate and surrounds the passage holes for the mounting screws.

In Further, the sheet has beads and / or includes elastomers as sealing elements.

In Further development of the invention are the component and the attachment parts an internal combustion engine, in particular a self-igniting Internal combustion engine. The designations component and attachment are so far to understand that two parts are connected to each other are intended to include this.

A inventive embodiment is characterized by the use at the junction of the gear box / front Cover with the engine block / transmission block of an internal combustion engine.

Of the Invention is therefore based on the general inventive idea, the friction varnish in parallel with a sealant or sealant one part (flange surface) or to apply to a sheet metal gasket. This is the sealant or the sealant or a bead in the Sheet metal to be sealed medium and the friction varnish outside, preferably in the area of the fastening screws.

Hereinafter a preferred form of use:
The gear box / front cover of an internal combustion engine, which is screwed to the engine block / gear block, has forces perpendicular to the sealing surface and / or torsional forces to transmit.

such personnel for example As in engines in tractors, in which the engine is used as a supporting component. The contact forces of Fixing screws determine together with the coefficient of friction possible transferable Frictional force. The number of fixing screws can be due to lack of space does not multiply arbitrarily, respectively cause these mounting screws including their threads additional Costs.

The gearbox is usually sealed with a liquid seal against the crankcase. Outside the course of the sealing bead friction coating is applied to the component, preferably on the gear box / front cover. The drying of the friction varnish is preferably completed before the application of the liquid seal. The area of the applied friction varnish is preferably partial in the area of Schraubenbutzen, since there the pressure is the most effective.

Between Sealing bead and friction varnish, the component for better separation the two media have a groove.

The Seal between gear box / front Cover and engine block / gear block consists of a sheet metal. This Sheet metal can be provided on both sides with sealants / sealants. The sheet can be used for reinforcement the sealing effect beads have; and / or it may be elastomers Include sealing elements.

Outside the sealing zones is bilateral, again preferably in the area of Screw through holes or Schraubenbutzen, due to the high screw friction varnish applied.

The Application of this invention is in the field of high thrust and Torsional forces Motor components interesting. These loads occur in particular when using engines in agricultural tractors. The twist the tractors between front and rear wheels means this load case.

tries have an increase of the coefficient of friction is about 50% occupied.

Further advantageous embodiments of the invention are the drawing description can be seen in the embodiments illustrated in the figures closer to the invention are described.

It demonstrate:

1a a perspective view of a lid on an internal combustion engine,

1b a view of the lid on the flange surface,

1c a section along the line AA of 1b .

1d an enlarged section 1c .

2a a perspective view of a gasket for use on an internal combustion engine,

2 B a view of the seal on the flange surface,

2c a section along the line CC of 2 B and

2d an enlarged section 2c ,

1a shows in an exemplary illustration a lid 10 for use on an internal combustion engine. This lid 10 For example, the gearbox / front cover may be bolted to the engine block / gearbox.

1b shows a view of the lid 10 on the flange surface 1 and 1c a section along the line AA of 1b , 1d shows the in 1c area indicated by a circle on an enlarged scale.

For sealing is on the flange surface 1 as a sealant 2 applied a liquid seal. This is located near the medium to be sealed. On the flange surface 1 outside the sealant 2 are screw trimmings 5 introduced, in which fastening screws 4 are used, with which the lid 10 to the internal combustion engine, which is a self-igniting internal combustion engine, is screwed.

Thus the connection of the cover 10 is suitable with the internal combustion engine with simple means for the transmission of high shear or torsional forces are the screw neck 5 each of a friction varnish 3 encompassed.

Between the sealant 2 and the friction varnish 3 is, for the clean separation of these two media, on the flange surface 1 a circumferential groove 6 arranged.

In the 2a to 2d an embodiment is shown in which the in the 1a to 1d shown lid 10 about a sealant 2 , which consists of sheet metal, is bolted to the engine. This sealant 2 made of sheet metal is hereafter as a seal 11 designated.

2a shows this seal 11 made of sheet metal in a perspective view. In the 2 B is a view of the flange surface 1 the seal 11 shown and 2c shows a section along the line CC of 2 B , In 2d is the in 2c represented by a circle area on an enlarged scale.

For sealing is on the gasket 11 to the medium to be sealed out on the front and back each have a sealant 7 applied. Outside of these sealants 7 is for reinforcement a circumferential bead 9 brought in.

The seal 11 Also on the screw jack 5 (please refer 1d ) so that the fixing screws 4 (please refer 1d ) in the building th state the seal 11 at the passage holes 8th project through.

Thus, in this embodiment, the connection of the lid 10 (please refer 1d ) is suitable with the internal combustion engine with simple means for the transmission of high shear or torsional forces are the through holes 8th each of a friction varnish 3 encompassed.

When installed, the seal is located 11 on the flange on, for fixing the fastening screws pierce the seal at the through holes.

1

flange

2

sealant

3

Reiblack

4

mounting screws

5

Schraubenbutzen

6

groove

7

sealants

8th

Through holes

9

Beading

10

cover

11

poetry

Claims (8)

Connection of a component with an attachment via a flange surface on which a sealant is sealed to the medium to be sealed and outside of the sealant, the component with the attachment via fastening screws, characterized in that on the flange ( 1 ) outside the sealant ( 2 ) a friction varnish ( 3 ) is applied. A compound according to claim 1, characterized in that the friction varnish ( 3 ) in the area of the fixing screws ( 4 ) or their Schraubenbutzen ( 5 ) is arranged. A compound according to claim 1 or 2, characterized in that the friction varnish ( 3 ) the fixing screws ( 4 ) or the screw studs ( 5 ) surrounds. Connection according to one of the preceding claims, characterized in that between the sealant ( 2 ) and the friction varnish ( 3 ) a groove ( 6 ) on the flange surface ( 1 ) is introduced. A compound according to any one of the preceding claims, wherein the sealant ( 2 ) is a sheet, which in the region of the flange on both sides with sealing compounds ( 7 ) and the sheet can be through-holes ( 8th ) for the fixing screws ( 4 ), characterized in that the friction varnish ( 3 ) is arranged on the sheet and the through holes ( 8th ) for the fixing screws ( 4 ) surrounds. Connection according to one of the preceding claims, characterized in that the sheet beading ( 9 ) and / or includes elastomers as sealing elements. A compound according to any one of the preceding claims, characterized in that the component and the attachment parts of an internal combustion engine, in particular self-igniting Internal combustion engine are. A compound according to any one of the preceding claims by use at the connection of the gear box / front cover with the engine block / transmission block of an internal combustion engine.