DE102011050297B4 - Lining carrier plate for a friction lining - Google Patents

Abstract

Lining carrier plate for a friction lining (5) with a retaining bolt (12.1, 12.2) and with a base area (2), characterized in that the base area (2) is enlarged in terms of surface area, the base area (2) having an indentation (9) and a protuberance ( 8), the base surface (2) having circular bolt contact surfaces (3), the bolt contact surfaces (3) serving to connect the lining carrier plate (1) to the retaining bolts (12.1, 12.2), the surface of the base surface (2) passing through The introduction of 1 mm deep structures during punching is enlarged, the bolt contact surfaces (3) having a flat shape, the structured surface being present over the entire space of the base area (2) with flat bolt contact surfaces (3), with a crossed corrugation A pyramid-shaped structure is embossed, the area of the lining carrier plate (1) serving as the base surface (2), which is connected to the friction lining ( 5) interacts.

Description

The invention relates to a lining carrier plate for a friction lining according to the preamble of claim 1.

State of the art

Various covering carrier plates are known and used from the prior art.

In the WO 02/02963 A1 pointed out, which a pad carrier plate with a surface area enlarged connection. In this context, the DE 29 804 619 U1 pointed. There, one surface of the brake pad is covered with retaining bolts.

Further on US 2,087,453 A. pointed. There the friction lining is fastened to the curved support by means of rivets.

Also on the GB 2 245 667 A pointed out, where the friction lining is positively connected to the carrier by means of a serrated surface and a corresponding also serrated surface.

In the DE 10 2007 026 335 A1 describes a method with which the surface of the carrier plate is roughened for better adhesion.

In this context, the DE 19 740 597 A1 pointed. There is a lining carrier with a friction lining is disclosed, which has corresponding retaining bolts for absorbing shear forces.

In addition, the EP 1 567 783 A1 pointed. There, a brake pad with a lining carrier and a friction lining is disclosed, the lining carrier having at least one bolt for binding the friction lining, which, starting from the lining carrier, extends through the friction lining from approximately the middle to approximately the lining surface, the bolt being formed from a non-ferrous metal is and, in operation, the bolt with the friction lining grinds when braking.

Further on DE 10 2007 002 864 A1 pointed. There is shown a multi-part brake body, which has an interchangeable brake pad. The brake body preferably consists of a lining carrier on which the brake lining is non-releasably applied and a base carrier to which the brake lining carrier is releasably connected.

In the prior art, a so-called underlayer is generally applied between the lining carrier plate and the friction lining, which should lead to a better connection of the two elements. This underlayer is being saved more and more frequently in order to minimize costs. In this context, instead of using the underlayer, an adhesive is used, which is intended to connect the lining carrier plate to the friction lining. Here, in turn, more and more customers are demanding that a remaining residual covering of at least 80% of the adhesive surface should be retained after the friction lining has been pushed down. This 80% mark should not be changed by saving the underlayers.

Object of the invention

The object of the invention is to ensure a secure connection of a lining carrier plate with a friction lining. In this context, better shear force compensation should be achieved. In addition, an underlayer should be saved.

Solution of the task

The features of claim 1 lead to the achievement of the object.

A lining carrier plate according to the invention should be suitable to be a link between the friction lining and the superstructures of a passenger car or truck. The base plate is regularly made of a metallic material. However, plastic base plates should also be included. Ultimately, the user decides on the material and material composition based on the requirements.

In an exemplary embodiment according to the invention, the friction lining serves to decelerate a passenger car or truck. This is done in such a way that the friction lining is brought into contact with a brake disc. With this contact to slow down the speed, the friction lining wears out. This creates high temperatures of several 100 ° C. The requirements for the material composition of the friction linings are subject to major scientific, social, legal and political fluctuations. A selection of materials is only given to the person skilled in the art on the basis of the patent applications described in the prior art. Ultimately, friction lining materials are to be used that meet the legal, economic and political requirements. In this context, attention should also be paid to the technical requirements of the friction lining.

The lining carrier plate preferably has a retaining bolt. The number and material of the retaining bolts must be measured against the technical requirements. Various methods are used to connect such retaining bolts to the lining carrier plate.

This includes, for example, welding. The advantages of welding are the long-lasting connection and the possibility of automated production.

In an exemplary embodiment according to the invention, the lining carrier plate also has a base area in addition to the retaining bolts. The base area should be the area that comes into contact with the friction lining. Specifically, this means that a flat bolt contact area, which is required for retaining bolts, is not part of the base area.

The base area of a covering carrier plate according to the invention should preferably have a larger surface area. Specifically, this means that the surface area of the base area should increase by technical measures. This begins in the nano range, which is known as the so-called “lotus leaf effect” and ends in indentations and protuberances of various types, which are intended to enlarge the base area. Deformations are intended to represent all material removals that are molded into the base surface away from the friction lining. In contrast, protuberances are intended to represent material formations which are formed away from the base surface towards the friction lining. The actual thickness of the facing carrier plate serves as “normal zero” for assessing the protuberances or indentations. Deformations such as protuberances should preferably be 0.5 mm to 4.0 mm, more preferably 0.75 mm to 2.0 mm, particularly preferably 1.0 mm. In this context, it is also conceivable for the base area to be enlarged by means of indentations and protuberances.

A topping plate according to the invention should also preferably be designed in such a way that an adhesive can be used. This adhesive is intended to ensure that the base plate can be connected to a friction lining on its base. The choice of material and technical requirements for this connection must be taken into account. Ultimately, the increase in surface area leads to a better connection between the friction lining and the loading plate. This results from the fact that more glue can be used by increasing the surface area. In addition, the joining behavior of the adhesive is improved by the enlarged surface of the base area of the lining carrier plate. This also results from the fact that an enlarged friction surface for the adhesive is made available. Ultimately, it can be achieved in an advantageous manner here that fewer retaining bolts have to be used. The roughened surface also means that skiving forces can be better absorbed.

In addition, a lining carrier plate according to the invention has a connection point which serves to connect the lining carrier plate to the corresponding parts of a passenger vehicle or truck. These corresponding connection points are to be adapted to the conditions of the various motor vehicles.

A method for producing the covering carrier plate according to the invention leads to the base surface being roughened by, for example, embossing taking place. This imprinting can be achieved either technically, mechanically or chemically. In addition, a covering carrier plate according to the invention should be roughened or enlarged in surface area by using a corresponding stamping or fineblanking method. This would have the advantage that such a surface enlargement could already be produced when the lining carrier plate was manufactured. This would make subsequent post-processing unnecessary, which in turn would lead to cost reduction.

An enlarged surface area of a lining carrier advantageously leads to stronger adhesion between the friction lining and the lining carrier plate.

In a preferred exemplary embodiment, only sections of the base area of the lining carrier can be enlarged in spots or contiguously. For example, only the edge areas of the base area could experience a corresponding coherent surface enlargement. A combination of different types of surface enlargement with one another is also considered in the context of the inventive idea. The indentations or protuberances can take the form of cylindrical circles, pyramids, triangles or flattened triangles with a ramp from “normal zero” to the desired maximum depth. The cylindrical circles can also have a ramp. This ramp would lead to parts of the cylindrical circles showing almost no protuberances or indentations and other parts of the cylindrical circles again having a maximum depth or maximum height of up to 4 mm, more preferably 1 mm.

In another embodiment of the manufacturing process, the surface enlargement can also be achieved by chemical treatment. The chemical treatment is supposed to in such a way that parts of the base area are etched away, for example.

list of figures

• 1 eine schematische Seitenansicht einer erfindungsgemässe Belagträgerplatte von schräg oben;
• 2 eine vergrösserte Teilansicht der 1;
• 3 eine vergrösserte Teilansicht eines anderen Ausführungsbeispiels einer erfindungsgemässen Belagträgerplatte;
• 4 einen Teilausschnitt eines anderen erfindungsgemässen Ausführungsbeispiels einer Belagträgerplatte;
• 5 eine Seitenansicht einer erfindungsgemässen Belagträgerplatte;
• 6 eine Belagträgerplatte mit Reibbelag in Seitenansicht.

The invention is explained in more detail below with the aid of a few drawings, the drawings showing

• 1 is a schematic side view of a facing carrier plate according to the invention obliquely from above;
• 2 an enlarged partial view of the 1 ;
• 3 an enlarged partial view of another embodiment of a covering carrier plate according to the invention;
• 4 a partial section of another exemplary embodiment of a facing carrier plate according to the invention;
• 5 a side view of a topping plate according to the invention;
• 6 a pad carrier plate with friction lining in side view.

In 1 is a base plate 1 shown which over a footprint 2 and circular bolt contact area 3 features. There is also a connection point 4 shown, which is suitable for connecting the lining carrier plate 1 with parts of a passenger car or truck not shown. The bolt contact areas 3 serve to connect the base plate 1 with appropriate retaining bolts 12.1 . 12.2 , These retaining bolts are in the 1 not shown in detail, however in 5 To see In addition, reference is made to the retaining bolts described in the status of the. The documents disclosed in the prior art are expressly treated as part of the disclosure of this application.

The surface of the base area is significantly increased by introducing structures that are approx. 1 mm deep during punching. It is essential that the bolt contact areas 3 as a prerequisite for welding on retaining bolts 12.1 . 12.2 maintain their flat shape. The stamping of the structure should be done by suitable shaping of the punching tools in the manufacturing technology of the base plate 1 to get integrated. In 1 is a structured surface over the entire space of the base area 2 with flat bolt contact surfaces 3 shown. A pyramid-shaped structure is stamped in here by means of crossed corrugation. As a base 2 essentially serves the area of the lining carrier plate 1 which with a friction lining 5 as he in the 6 is shown cooperating.

In 2 is an enlarged detail view of the 1 shown. There is the pyramid-shaped structure of the base 2 easier to see.

In 3 is a triangular indentation 6 disclosed. The triangular indentation 6 represents only one embodiment. In the triangular indentation 6 However, it has proven to be advantageous that the adhesive can be brought into the desired position faster and better. The triangular shape can also partially extend to the surface of the base 2 be raised, which is the friction lining 5 is facing. This creates a ramp-shaped construction within the triangular indentation 6 , which in turn improves the flow behavior of an adhesive used.

In 4 are cylindrical indentations 7 shown. These cylindrical indentations 7 can either over the entire footprint 2 , or as in 4 shown over part of the base 2 be arranged away.

In 5 is in turn an inventive backing plate 1 shown in a sectional side view. There are protuberances there 8th and indentations 9 , For one thing, the idea of the invention should include that protuberances 8th and indentations 9 on one and the same base plate 1 are molded. On the other hand, there should also be mixed forms of protuberances 8th and indentations 9 be encompassed by the inventive concept. In addition, in 5 to recognize again how the indentations 9 and the protuberances 8th on the side of the base plate 1 are attached, which the friction lining 5 is facing. The arrows 10 . 11 are intended to indicate how the friction lining 5 on the base plate 1 is applied. In this embodiment there are one retaining bolt each 12.1 and 12.2 for the area of the protuberance 8th and the area of the indentations 9 shown. The friction lining 5 is adapted so that it matches the indentations 9 and the protuberances 8th , as well as the retaining bolt 12.1 . 12.2 can be connected, so that with the use of an adhesive, not shown in detail, a firm connection between the lining carrier plate 1 and the friction lining 5 is achieved. In addition, in 1 a thickness d shown which is the "normal zero" moment for evaluating protuberances 8th and indentations 9 should indicate. Here again, the “normal zero” torque is that of the friction lining 5 facing side.

6 finally shows how a topping plate 1 with the friction lining 5 is put together.

LIST OF REFERENCE NUMBERS

2

1 base plate

3

Pin footprint

4

junction

5

friction lining

6

triangular indentation

7

cylindrical indentation

8th

protuberance

9

indentation

10

arrow

11

arrow

12.1

Retention pin

12.2

Retention pin

d

thickness

Claims (3)

Lining carrier plate for a friction lining (5) with a retaining bolt (12.1, 12.2) and with a base area (2), characterized in that the base area (2) is enlarged in terms of surface area, the base area (2) being provided with an indentation (9) and a protuberance ( 8), the base surface (2) having circular bolt contact surfaces (3), the bolt contact surfaces (3) serving to connect the lining carrier plate (1) to the retaining bolts (12.1, 12.2), the surface of the base surface (2) The introduction of 1 mm deep structures during punching is enlarged, the bolt contact surfaces (3) having a flat shape, the structured surface being present over the entire space of the base surface (2) with flat bolt contact surfaces (3), with a crossed corrugation a pyramid-shaped structure is embossed, the base area (2) being the area of the lining carrier plate (1) which is associated with the friction lining (5) interacts. Brake pad plate after Claim 1 , characterized in that the base surface (2) interacts with an adhesive, suitable for joining the friction lining (5) to the base surface (2). Base plate according to Claims 1 or 2 , characterized by a connection point (4), suitable for connecting the lining carrier plate (1) to parts of a passenger car or truck.

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