Pad disc brake

 

The invention relates to a transport machine building, and is intended preferably for disk brakes of motor vehicles. The requested block includes a friction plate and a metal frame having diverging outward radial protrusion, which made an additional radial ledge. Additional radial protrusion is made with narrowing in the connection zone with a radial protrusion. The technical result is to simplify installation and improve reliability. 2 Il.

The invention relates to the use in disc brakes of vehicles and various techniques of brake pads with special tabs for springs radial squeezing the brake pads.

Analogous to the claimed invention is a pad disc brake including a friction plate and a metal frame having diverging outward radial projection (see U.S. patent 4498564, IPC 7 F 16 D 65/02, 1985). The essential features of similar "friction plate and metal frame having diverging outward radial ledge" match the essential features of the claimed invention.

The disadvantage of analog is the complexity of installation timney design of the spring, as well as the lack of reliability of the springs under impact loads and high levels of vibration, leading to a weakening of the connection of the spring with the tab and to the possibility of its uncompensated skew and margin.

The prototype of the claimed invention is a pad disc brake including a friction plate and a metal frame having diverging outward radial protrusion, which made additional radial projection, the height of the additional radial protrusion is 0.4 height of the radial projection (see drawing to the Technical conditions 38.114427-93 "Strap with pad disc brake for a vehicle VAZ-1111 and its modifications", 1993). The essential features of the prototype of the friction plate and metal frame having diverging outward radial protrusion, which made an additional radial ledge" match the essential features of the claimed invention.

The disadvantage of the prototype is the complexity of installation of the release spring on the block, primarily because of the need for the fragment of the additional protrusion for fixing the spring, and the lack of reliability of the springs under impact loads and high levels of vibration, is the bias of the spring and fall (separation) from the ledge.

The challenge which seeks the invention is to simplify the mounting of the release spring, primarily by eliminating the need to fragment the additional ledge and improve the reliability of the springs under impact loads and high levels of vibration by reducing the possibility of uncompensated bias of the spring and fall off the ledge.

To achieve the technical result in the pad disk brake including a friction plate and a metal frame having diverging outward radial protrusion, which made an additional radial protrusion, an additional radial protrusion is made with narrowing in the connection zone with a radial ledge.

The essential features of the claimed invention "additional radial protrusion is made with narrowing in the connection zone with a radial protrusion are different from the characteristics of the prototype.

The invention is illustrated in the drawing, in Fig.1 which presents a block, view from the side of the friction surface of the friction lining; Fig.2 is a view of the radial protrusion and the additional radial ledge.

The block contains a flat metal frame 1 and the friction pad is placed radially with respect to the center of rotation of the brake disc and the additional ledge 4, also which is radial relative to the center of rotation of the brake disc. The width of the additional radial protrusion in the area close to the radial protrusion is less than the width of the remaining part of the additional ledge.

A specific example of the invention is a pad disc brake car "OKA", a frictional element which is made of polymer friction composite tier-240, and the metallic frame includes a radial protrusion with a width of N~11 mm and an additional radial protrusion with a width h~ 4,3 mm Additional protrusion has a constriction, where the width of the additional protrusion is ~3,9 mm

Making additional radial ledge with narrowing allows to fix the spring on the block without additional fragment of the ledge, as the mounting of the spring on the ledge you can do with tightness in a wide area, with the spring in a narrow zone will have sufficient clearance. In the result, it is possible to avoid the decay of the spring under impact loads and vibrations in a real environment. No Rocklake avoids changing the size and shape of the additional ledge (which significantly reduces the possibility of jamming of the spring in a skewed state and reduces the possibility of jamming.

Claims

Pad disc brake including a friction plate and a metal frame having diverging outward radial protrusion, which made an additional radial protrusion, wherein the additional radial protrusion is made with a smaller width in the connection zone with a radial protrusion.

 

Same patents:

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The invention relates to the field of transport engineering and is intended preferably for disk brakes of motor vehicles

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FIELD: transport engineering; brake systems of wheeled vehicles.

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16 cl, 10 dwg

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