Caliper body, pin and elastic element assembly; brake caliper; pin assembly; caliper body; and assembly method for a pad supporting pin into a caliper body of a vehicle

A pin assembly comprising a brake pad supporting pin and an elastic element adapted to cooperate with a caliper body comprising a first elongated element and a second elongated element, wherein said first elongated element comprises at least a caliper body first housing and said second elongated element comprises at least a caliper body second housing, wherein said caliper body first housing and said caliper body second housing each have a housing axis, wherein said caliper body first housing comprises in succession at least a first housing first portion, a first housing abutment portion and a first housing third portion, said caliper body first housing having a longitudinal extension and having a caliper body first housing diameter, and said caliper body second housing having a longitudinal extension and having a caliper body second housing diameter,

• wherein said brake pad supporting pin comprises a pin body that extends along a pin axis between a pin proximal end and a pin distal end,
• wherein said pin axis defines an axial direction, either coincident with or parallel to said pin axis, and a radial direction transverse to said axial direction,
• wherein said pin body is adapted to fit into said caliper body first housing and said caliper body second housing,
• wherein said pin axis is parallel and coincident with each housing axis,
• wherein said pin body comprises in succession at least a pin annular housing for the elastic element and a pin shank of a prevailing longitudinal extension,
• wherein said pin shank has a pin shank diameter,
• wherein said elastic element is fitted on said pin body and arranged in said pin annular housing, wherein said elastic element can be accommodated in said first housing first portion, wherein said elastic element is adapted to abut said first housing abutment portion, wherein said elastic element has an elastic element outer diameter,
• wherein said pin shank diameter measured at a largest cross-section thereof is either smaller than or equal to said caliper body second housing diameter measured in any cross-section with respect to said housing axis of said caliper body second housing along its longitudinal extension and to said caliper body first housing diameter measured in any cross-section with respect to said housing axis of said first housing third portion, and
• wherein said elastic element outer diameter measured in at least a cross-section with respect to said pin axis of said elastic element is greater than said pin shank diameter measured in any cross-section with respect to said pin axis of said pin shank along its longitudinal extension.

An assembly method of a brake pad supporting pin in a caliper body of a vehicle, the assembly method comprising:

• providing a brake pad supporting pin comprising a pin body extending along a pin axis between a pin proximal end and a pin distal end and comprising a pin annular housing and a pin shank in succession,
• providing an elastic element and fitting the elastic element on said pin body at said pin annular housing,
• providing a caliper body of a brake caliper, wherein said caliper body comprises a first elongated element and a second elongated element, wherein said first elongated element comprises at least a caliper body first housing and said second elongated element comprises at least a caliper body second housing, wherein said caliper body first housing and said caliper body second housing each have a housing axis parallel and coincident with said pin axis, wherein said caliper body first housing comprises in succession at least a first housing first portion, a first housing abutment portion and a first housing third portion,
• wherein the elastic element defines the sole axial limit stop for the pin against the caliper body
• inserting said brake pad supporting pin in said caliper body for a first insertion stretch,
• wherein in said first insertion stretch said pin distal end slides through the caliper body first housing in direction of said caliper body second housing until the pin distal end enters into said caliper body second housing, and wherein at the end of said first insertion stretch said pin annular housing and said elastic element are positioned at a mouth of said caliper body first housing, and
• inserting said brake pad supporting pin into said caliper body for a second insertion stretch by applying a force to said pin proximal end in direction of said pin distal end, wherein in said second insertion stretch said pin distal end slides inside said caliper body second housing and said elastic element slides inside said first housing first portion until said elastic element axially abuts said first housing abutment portion defining a limit stop abutment of said brake pad supporting pin inside said caliper body, preventing the pin body from axially abutting pin body surfaces developing in a radial direction.