Pad return spring for a disc brake caliper body

Abstract

A pad return spring (50) for a disc brake caliper body adapted to straddle a brake disc, said brake disc comprising a first braking surface of brake disc and an opposite second braking surface of brake disc, said caliper body comprising: a first elongated wheel-side element comprising an outer caliper side of first elongated element and an inner caliper side of first elongated element, wherein said outer caliper side of first elongated element is adapted to face a vehicle wheel and wherein at least one portion of the inner caliper side of first elongated element is adapted to face said first braking surface of brake disc by means of a first pad); a second elongated opposite wheel-side element comprising an outer caliper side of second elongated element and an inner caliper side of second elongated element, wherein at least one portion of the inner caliper side of second elongated element is adapted to face said second braking surface of brake disc by means of a second opposite pad; - said first elongated wheel-side element comprises at least one thrust means seat adapted to receive thrust means which are suitable for influencing the first pad against said first braking surface of brake disc; at least said second elongated opposite wheel-side element comprises at least two portions each defining a connecting seat adapted to connect the caliper body to a support element for supporting the caliper on the vehicle; said caliper body comprises at least one elongated element connecting bridge adapted to connect said first elongated wheel-side element to said second elongated opposite wheel-side element so as to be suitable for straddling said brake disc; said at least one elongated element connecting bridge comprises a middle connecting bridge which extends according to the axial direction and defines an outer middle bridge side externally facing the caliper body, an inner middle bridge side internally facing the caliper body, opposite to the outer middle bridge side, a middle bridge disc inlet side, a middle bridge disc outlet side, opposite to the middle bridge disc inlet side; said pad return spring (50) comprising a first pad retraction element (61) and a second pad retraction element (62), each of said first pad retraction element (61) and second pad retraction element (62) defining a middle stretch (58 59), a first side stretch (54, 55) adapted to influence said first pad, and an opposite second side stretch (56, 57) adapted to influence said second pad to move said first pad and said second opposite pad away from said first braking surface of brake disc and from said opposite second braking surface of brake disc at the end of a braking action; wherein said first pad retraction element (61) and said second pad retraction element (62) are shaped as a folded band and consist of a plurality of overlapping sandwiched sheet layers (61' 62'); said spring comprising an elongated connecting element (63) which connects the first pad retraction element (61) and the second pad retraction element (62) to each other at said middle stretch (58, 59); said spring comprising anchoring means (51, 52, 53) adapted to removably restrain said pad return spring (50) to said middle connecting bridge (18).

Description

technical field [0001] The present invention relates to a caliper return spring and a disc brake caliper comprising such a spring. [0002] In particular, the disc brake caliper body in the fixed type disc brake caliper body does not slide relative to its support and is adapted to straddle a floating type brake disc, also known as sliding on its support so as to be coaxial therewith changes its position in order to move towards or away from at least one brake pad. The brake disc has a first braking surface of the brake disc and an opposing second braking surface of the brake disc. Such a fixed caliper body comprises a first elongated wheel side element, ie facing the vehicle wheel, the first elongated wheel side element comprising an outer caliper side of the first elongated element and an inner caliper side of the first elongated element, wherein The outer caliper side of the first elongated element is adapted to face the vehicle wheel. The caliper body has at least one po...

AI Technical Summary

Problems solved by technology

[0026] Known pad return springs do not allow simultaneous fulfillment of the aforementioned distinct needs

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