Parking caliper assembly

Patent metadata

Field	Value
Publication number	US-9512890-B2
Application number	US-201314379211-A
Country	US
Kind code	B2
Filing date	Feb 15, 2013
Priority date	Feb 16, 2012
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

An assembly comprising a caliper body ( 2 ) of a caliper assembly for parking disc brake, said caliper body ( 2 ) comprising a channel ( 14 ), said axial channel ( 14 ) being defined by at least one wall having at least one flattened length forming at least one guide surface ( 15; 16 ); at least one portion of caliper body ( 10 ) projecting towards the disc or above the disc ( 3 ), said portion of caliper body ( 10 ) comprising a surface facing the disc ( 11 ) or at least the friction material ( 12 ) of said pad ( 8 ), and wherein said surface facing the disc ( 11 ) has a flattened length forming at least one abutment surface ( 12; 13 ) and wherein said at least one guide surface ( 15; 16 ) is oriented differently with respect to said at least one abutment surface ( 12; 13 ) so as to avoid that they are mutually coplanar; said guide surface ( 15; 16 ) is suitable to face an opposite guide surface ( 25; 26 ) provided for on an associable supporting plate ( 21, 22 ) of an associable pad ( 8 ) in order to allow the positioning and sliding thereof against the caliper body ( 2 ) and wherein, in said abutment surface ( 12, 13 ), it is suitable to face an opposite abutment surface ( 27, 28 ) provided for on the supporting plate ( 21, 22 ) of at least one associable pad ( 8 ) so as to allow the pad to abut and slide against said abutment surface ( 12; 13 ).

First claim

The invention claimed is:

1. A caliper assembly for parking disc brake comprising,
a parking caliper body arranged astride of a disc for disc brake so as to exert, on at least one braking surface thereof, a braking action capable of holding a vehicle in a parking position;
said disc having a substantially axially symmetrical body suitable to rotate about a rotational axis defining an axial direction to the disc, a direction orthogonal to said axial direction or a radial direction to the disc, and a direction orthogonal to said axial direction and said radial direction or a tangential direction to the disc or a circumferential direction, and forming opposite braking surfaces;
said caliper body comprising
a pin seat suitable to receive a suspension pin of at least one pad for disc brake;
an upper surface of the caliper body facing the side opposite with respect to the braking disc or friction material of at least one received pad;
a channel directed according to a direction parallel to the axial direction or a sliding direction of at least one pad approaching to or moving away from one of the braking surfaces of the disc; said channel being obtained in a portion of the caliper body arranged astride or above said disc;
said channel being defined by at least one wall having at least one flattened length forming at least one guide surface;
said portion of caliper body projecting astride of the disc or above the disc comprising a surface facing the disc or at least the friction material of said pad,

wherein
said surface facing the disc has a flattened length forming at least one abutment surface,

and wherein
said at least one guide surface is oriented differently with respect to said at least one abutment surface so as to avoid that said guide surface and said abutment surface are coplanar;
said assembly further comprising:
at least one suspension pin of at least one pad for disc brake having at least one pin end received with clearance in said pin seat provided for in the caliper body; wherein said suspension pin is arranged astride of said disc;
at least one pad for disc brake comprising friction material suitable to abut against a braking surface of the disc when said pad is urged by thrust means housed in said caliper body;
said at least one pad comprising a supporting plate comprising a plate portion extending outwardly of the friction material, so as to avoid facing the braking surface of the disc and so as to move radially outwardly and outside the area of the pad that can be arranged facing the disc;
said plate portion comprising a coupling loop receiving, with clearance, said suspension pin to suspend said at least one supporting plate to the suspension pin, allowing the pad to freely slide toward or moving away from the disc;

said plate portion further comprising:
a flattened length to form an opposite guide surface arranging facing said at least one guide surface to slide thereon;
a further flattened length to form at least one opposite abutment surface suitable to abut against said at least one abutment surface;
said assembly further comprising:
at least one suspension spring anchoring with the ends thereof to the upper surface of the caliper body and which passes around and below the suspension pin on the opposite side to said upper surface to move said pin away from the disc and to cause the pin to move away from the disc together with the suspended pad affecting said pin and the suspended pad in a substantially radial direction away from the rotational axis of the disc, bringing said opposite abutment surface to abut against said abutment surface and keeping said opposite guide surface free to slide along said guide surface, so as to avoid that said abutment surface and said opposite abutment surface, as well as said guide surface and said opposite guide surface are arranged laterally to the disc at the side of the braking surfaces of the disc.

2. The assembly according to claim 1 , wherein said flattened lengths to form opposite guide and/or abutment surfaces are obtained at the edge of the plate of the pad.

3. The assembly according to claim 1 , wherein
said at least one guide surface comprises two guide surfaces, and/or wherein
said guide surfaces are mutually opposite, and/or wherein
said guide surfaces are mutually parallel and parallel to the axial direction, as well as to the radial direction, and/or wherein
said guide surfaces are two opposite guide surfaces, and/or wherein
said opposite guide surfaces are mutually parallel and parallel to the axial direction, as well as to the radial direction.

4. The assembly according to claim 3 , wherein said at least one abutment surface comprises two abutment surface, and/or wherein
said abutment surfaces are mutually parallel, and/or wherein
said abutment surfaces are mutually coplanar, and/or wherein
said abutment surfaces are mutually parallel and parallel to the tangential direction; and/or wherein
said abutment surfaces are two opposite abutment surfaces, and/or wherein
said opposite abutment surfaces are mutually coplanar, and/or wherein
said opposite abutment surfaces are mutually parallel and parallel to the axial direction.

5. The assembly according to claim 4 , wherein the guide surfaces are substantially orthogonal to the abutment surfaces; and/or wherein the opposite guide surfaces are substantially orthogonal to the opposite abutment surfaces.

6. The assembly according to claim 1 , wherein said caliper body is a floating caliper body suitable to slide with respect to one support thereof, and/or wherein said caliper body comprises thrust means of the pad arranged only at one side of the disc and the thrust means transfers the braking action to the opposite pad by an axial displacement of said caliper body.

7. The assembly according to claim 1 , wherein said caliper body is of the floating type and slides axially supported by a separated caliper body, and/or wherein said supporting caliper body is a caliper body of the fixed type.

Assignees

• Freni Brembo Spa

Inventors

• Nessi Lorenzo
• Bonetti Adriano
• Crippa Cristian

Classifications

• F16D65/092

  for axially-engaging brakes, e.g. disc brakes · CPC title

• F16D2055/007

  Pins holding the braking members · CPC title

• F16D55/224 Primary

  with a common actuating member for the braking members · CPC title

• F16D65/0075 Primary

  assembled from a plurality of parts · CPC title

• F16D2055/0041

  Resilient elements interposed directly between the actuating member and the brake support, e.g. anti-rattle springs · CPC title