Friction item

FIELD: machine building.

SUBSTANCE: friction item includes a metal frame and a polymer composite friction element moulded onto it. A polymer damping layer and an anti-noise metal plate with bent elements is fixed on the metal frame surface. The surface of the polymer damping layer, which faces the anti-noise metal plate, has projections. Polymer damping layers are fixed on surfaces of the anti-noise metal plate. The latter is fixed with its bent elements to the end surface of the metal frame, and an additional polymer layer is fixed on the surface of the polymer damping layer, which contains the projections; with that, the above polymer damping layer is fixed on the metal frame surface.

EFFECT: increasing the noise absorbing ability of an item; simplifying fixation of the anti-noise plate; simplifying the anti-noise plate structure as a whole.

4 dwg

 

The invention relates to the field of engineering, namely for friction products containing a reinforcing metal frame, such as pads of disc brakes of cars, friction products for various machines and equipment and so on

Analogous to the claimed invention is a friction article containing a metal frame and reformovanii to him polymer composite friction element, the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element ("back" side of the frame) coated with anti-noise primer (mastic), which is fixed on the surface of the metal frame and forms a so-called "external damper" (see Marcon. Style professionals. Product catalog. Yaroslavl, 2003, S. 6; the Art of silence. The magazine "Behind the wheel", No. 04, 2005 S. 179). The essential features of similar "metal frame, reformovanii polymer composite friction element, the surface of the frame opposite the surface to which preferowan polymer composite friction element coated with anti-noise mastic, fixed on the surface of the metal cage" match the essential features of the claimed invention.

The disadvantage of analog is perhaps the TB rapid extrusion antinoise mastic from the contact zones of the frame pads with the working elements of the brake caliper (piston, bracket and other), resulting in stops the effect of noise and vibration when braking.

Another analogue of the claimed invention is a friction article containing a metal frame and reformovanii to him polymer composite friction element on the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element placed antinoise metal plate, fixed two bent elements to the surface of the metal frame to which preferowan polymer composite element (see patent RU 2478844, IPC F16D 65/097, 2013). The essential features of similar "metal frame, reformovanii polymer composite friction element placed antinoise metal plate, fixed elements to the surface of the metal frame coincide with the essential features of the claimed invention.

The disadvantage of analogue is the lack between the metal plate and the surface of the metal frame of the damping layer, the absorbing vibrations and sound waves. In result, you are unable to achieve adequate anti-noise effect.

Another analogue of the claimed invention is a friction product containing the metal to RCAS and reformovanii to him polymer composite friction element, while on the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element placed antinoise metal plate, which on the surface facing the surface of the metal frame, fixed damping polymer layer, and the plate is fixed to the end surface of the metal frame curved elements - "fingers" (see NU-LOK on the Brake Pad, www.nucap.com/www.nu-lokshims.com, 2011). The essential features of similar "metal frame, reformovanii polymer composite friction element placed antinoise metal plate, the plate is fixed to the end surface of the metal frame curved elements" match the essential features of the claimed invention.

The disadvantage of analog is insufficient sound absorption ability of a product due to the lack of fixation of the damping layer directly on the surface of the metal frame of the product.

The prototype of the claimed invention is a friction article containing a metal frame with holes and reformovanii to him polymer composite friction element with the tabs in the holes of the frame, while on the surface of the metal frame, the opposite is arnosti, to which preferowan polymer composite friction element fixed damping polymer layer and placed antinoise metal plate with curved elements fixed in the holes of the metal frame to the tabs of the friction element without fixing the metal frame and the surface of the damping layer facing the antinoise metal plate made with the bumps and hollows (see patent RU 2483232, IPC F16D 65/092, 2013). The essential features of the prototype metal frame, reformovanii polymer composite friction element on the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element fixed damping polymer layer placed antinoise metal plate with curved elements, the surface of the damping layer facing the antinoise metal plate made with the tabs" match the essential features of the claimed invention.

The disadvantage of the prototype is insufficient sound absorption ability of a product due to the lack of damping layer directly on the surface of the metal anti-noise plate.

The task, which is aimed by the invention, is increased the e soundproofing capability of the product by placing sound-absorbing layer on the surface of the metal frame products and on the surface of the metal anti-noise plate, simplifying the fixing antinoise plate and simplification of the manufacturing process of the product.

To achieve the technical result in friction product, containing a metal frame and reformovanii to him polymer composite friction element on the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element fixed damping polymer layer and placed antinoise metal plate with curved elements, and the surface of the polymer damping layer facing the antinoise metal plate made with the tabs on the anti-noise surfaces of the metal plate is fixed damping polymer layers, anti-noise plate fixed bent elements to the end surface of the metal frame, and contains the projections of the surface of the polymer damping layer, fixed on the surface of the metal frame, fixed additional polymer layer.

The essential features of the claimed invention on the surface of the anti-noise metal plate facing to the metal frame, fixed damping polymer layer, the metal is Kai plate fixed bent elements to the end surface of the metal frame, on containing the projections of the surface of the polymer damping layer is fixed on the surface of the metal frame, fixed additional polymer layer are different from the characteristics of the prototype.

In Fig.1 shows a friction product, view from the metal frame. In Fig.2 shows the friction product, view from the polymer composite friction element. In Fig.3 presents a cross-section of part of the friction products. In Fig.4 shows a metal anti-noise plate.

Friction product contains metal frame 1, which may be flat or curved (for example, in the form of a cylindrical shell or a more complex shape). To the frame preferowan friction element 2. The friction element can be manufactured, for example, from friction polymer composite containing a polymer matrix and dispersed, including fibrous fillers. On the inner surface of the frame (surface 3 opposite to the surface 4 to which preferowan friction element) is placed polymeric damping layer 5 (layer mastics, primers and other) fixed (for example by adhesion, bonding, etc.,) on this surface. On top of the damping layer placed antinoise metal plate 6. The shape of the metal is lastine may correspond to the shape of the metal frame or differ from it. Antinoise metal plate made with curved elements 7, attach the metal plate to the end surface 8 of the metal frame. The surface 9 of the damping layer facing the antinoise metal plate, provided with projections 10. Antinoise metal plate made with damping layers 11 and 12, fixed on the surfaces of the metal plate, for example by adhesion, gluing, etc., These layers can be made of polymer, located in the highly elastic state, for example of rubber. On containing the projections of the surface of the damping layer is fixed on the surface of the metal frame, fixed additional polymer layer 13 (for example, by adhesion, gluing, etc.,). This layer can be made of various polymers, for example polymers used to protect metal and other surfaces (powder dyes and so on).

A specific example of the invention is a pad disk brake VAZ, containing flat metal frame. To the frame preferowan friction element made of polymer friction composite. As the polymer damping layer, fixed on a metal frame, used anti-noise mastic (protective material is protivochumnyj brand AR 746 SKL). The thickness of the layer of mastic ≈0.20 mm in the areas of the projections of the damping layer of mastic. A layer of mastic applied layer of polymeric powder dye thickness ≈0,10 mm anti-noise plate is made of metal thickness ≈0.40 mm, the thickness of the damping layer, fixed on the anti-noise plate is ≈0.15 mm (for each layer). Antinoise metal plate made with four curved elements.

Be made of the inventive friction product is well-known methods, for example by molding. After molding, and the processing required by the product is applied antinoise mastic, mastic is applied an extra layer of polymer and put containing a damping layers antinoise plate.

The inventive construction of the pad allows for the fixation of one of the damping layer on the surface of the metal frame, and other damping layers to the surfaces of metal antinoise plate effectively suppress vibrations of a metal frame and articles in General. Due to the fact that the damping layer with protrusions is separated from the damping layer antinoise plate with a layer of polymer, as well as due to the presence of gaps between the damping layers outside the areas of the projections of the damping layer, fluctuations significantly attenuated. This may be mutual deformation, the MCA is giving and mixing antinoise layers due to the presence of the intermediate layer.

The result is improved sound absorption ability of a product, it is easier to commit anti-noise plate, since the fixing is carried out by "latching" bent elements on the frame pads. Also simplifies the design antinoise plate because it does not require the creation of a multi-layer (more than three layers), metal-polymer sheet and, therefore, simplifies the manufacturing process of this sheet protectors plate.

Friction products containing metal frame and reformovanii to him polymer composite friction element, where on the surface of the metal frame, opposite the surface to which preferowan polymer composite friction element fixed damping polymer layer and placed antinoise metal plate with curved elements, with the surface of the polymer damping layer facing the antinoise metal plate made with the protrusions, wherein the anti-noise surfaces of the metal plate is fixed damping polymer layers, anti-noise plate fixed bent elements to the end surface of the metal frame, and contains the projections of the surface of the polymer damping layer, fixed on the surface of the metal is lifescope frame, fixed additional polymer layer.



 

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