US 11,492,959 B2Granted

Steering rod for turbochargers and method for making it

AssigneeFaist Componenti S.P.A.

InventorsDomenico Carnevale, Andrea Asfalti

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Abstract

Steering rod for connecting an actuator to a turbocharger drive member, comprising an elongated main body (2), which extends between a first end (5) equipped with a first through-hole (7), and a second end (6) equipped with a second through-hole (8), and two bushings (3), (4) immovably mounted in the through-holes (7), (8), wherein the bushings (3), (4) are made of a material which has a greater resistance to mechanical wear than the material delimiting the through-holes (7), (8), and wherein each bushing (3) (4) has an outer surface that is in contact with an inner part of the through-hole (7), (8) and has a radial recess (9), the second material tightening the bushing (3), (4) preventing it from rotating and filling the recess (9) preventing the bushing (3), (4) from being extracted from the second through-hole (7), (8).

Claims12

Dependent claims

Steering rod for connecting an actuator to a turbocharger drive member, comprising:

an elongated main body (2), which extends between a first end (5) equipped with a first through-hole (7), and a second end (6) equipped with a second through-hole (8);
a first bushing (3) fixedly mounted in the first through-hole (7);
and
a second bushing (4) fixedly mounted in the second through-hole (8);
wherein, moreover:
the first bushing (3) and the second bushing (4) are made with a respective first material, which has a greater resistance to mechanical wear than a second material which delimits the first through-hole (7) and the second through-hole (8) respectively;
the first bushing (3) has an outer surface that is in contact with an inner part of the first through-hole (7), and wherein in the outer surface of the first bushing (3) that is in contact with the inner part of the first through-hole (7) there is a radial recess (9) towards a central axis (10) of the first bushing (3), consisting of a first radial annular groove which is centred on the central axis (10) of the first bushing (3) and faces outwards of the first bushing (3), the second material tightening the first bushing (3) preventing it from rotating freely around the central axis (10) and filling the recess (9) preventing the first bushing (3) from being extracted from the first through-hole (7);
and
the second bushing (4) has an outer surface that is in contact with an inner part of the second through-hole (8), and wherein, in the outer surface of the second bushing (4) that is in contact with the inner part of the second through-hole (8), there is a radial recess (9) towards a central axis (10) of the second bushing (4), consisting of a first radial annular groove which is centred on the central axis (10) of the second bushing (4) and faces outwards of the second bushing (4), the second material tightening the second bushing (4) preventing it from rotating freely around the central axis (10) and filling the recess (9) preventing the second bushing (4) from being extracted from the second through-hole (8).

6 more elements

Method for making a steering rod for connecting an actuator to a turbocharger drive member, comprising the following work steps:

make an elongated main body (2) extending between a first end (5) and a second end (6);
make a first bushing (3) using a material which has a greater resistance to mechanical wear than a material constituting the first end (5);
make a radial recess (9) on the outer surface of the first bushing (3) consisting of a first radial annular groove which is centred on the central axis (10) of the first bushing (3) and faces outwards of the first bushing (3);
make a second bushing (4) using a material which has a greater resistance to mechanical wear than a material constituting the second end (6);
make a radial recess (9) on the outer surface of the second bushing (4) consisting of a first radial annular groove which is centred on the central axis (10) of the second bushing (4) and faces outwards of the second bushing (4);
pierce the first end (5) to make a first through-hole (7) configured to house the first bushing (3);
pierce the second end (6) to make a second through-hole (8) configured to house the second bushing (4);
insert the first bushing (3) and the second bushing (4) into the first through-hole (7) and the second through-hole (8) respectively;
press a punch against the first end (5) around the first bushing (3) to deform the first end (5) by pushing the material constituting it both against an outer surface of the first bushing (3), to clamp it into the elongated main body (2), and inside the radial recess (9) of the first bushing (3), to prevent axial movements thereof relative to the elongated main body (2);
and
press a punch against the second end (6) around the second bushing (4) to deform the second end (6) by pushing the material constituting it both against an outer surface of the second bushing (4), to clamp it into the elongated main body (2), and inside the radial recess (9) of the second bushing (4), to prevent axial movements thereof relative to the elongated main body (2).

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/476,143Filed 15 Sep 2021
Priority: IT 10202000002305630 Sep 2020
Published: US 2022/0099019 A131 Mar 2022
Granted: 8 Nov 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

F02B 37/186
Arrangements of bypass valves or actuators therefor: arrangements of actuators or linkage for bypass valves
B21K 25/00
Uniting components to form integral members
B23P 11/00
Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise
B23P 11/005
Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for: by expanding or crimping