Staking assembly, staking assembly manufacturing method, hub unit bearing, hub unit bearing manufacturing method, automobile, and automobile manufacturing method

A method of manufacturing a staking assembly comprising:

• preparing a first member, a second member including a concave portion and a hole allowing the first member to be inserted thereinto, and an auxiliary member;
• moving the auxiliary member and the first member relatively in an axial direction and including (a) combining the first member with the second member in the axial direction in accordance with the axial relative movement and (b) forming a convex portion engaging with the concave portion in accordance with the axial relative movement in the first member by the auxiliary member;
• and
• forming a staking portion with respect to the second member in the first member.

A staking assembly comprising:

• a first member;
• and
• a second member including a hole allowing the first member to be inserted thereinto and combined with the first member,
• wherein the second member includes a concave portion, and
• wherein the first member includes a staking portion with respect to the second member, a convex portion provided in an outer surface of the first member and engaging with the concave portion of the second member, and a groove provided in the outer surface of the first member and extending from the convex portion toward a front end of the staking portion.

A staking assembly comprising:

• a first member;
• and
• a second member including a hole allowing the first member to be inserted thereinto and combined with the first member,
• wherein the second member includes a concave portion,
• wherein the first member includes a staking portion with respect to the second member and a convex portion provided in an outer surface of the first member and engaging with the concave portion of the second member,
• wherein the concave portion of the second member includes a first surface intersecting an axial direction of the first member,
• wherein the convex portion of the first member includes a second surface parallel to the first surface of the concave portion, and
• wherein the first surface and the second surface are in close contact with each other in the axial direction.

A hub unit bearing comprising:

• an outer race including an outer race track;
• a hub including an inner race track;
• and
• a plurality of rolling elements arranged between the outer race track and the inner race track,
• wherein the hub includes a hub body including an outer surface and an inner race disposed on the outer surface of the hub body and held by the hub body,
• wherein the inner race includes a concave portion, and
• wherein the hub body includes a staking portion with respect to the inner race, a convex portion provided in the outer surface of the hub body and engaging with the concave portion of the inner race, and a groove provided in the outer surface of the hub body and extending from the convex portion toward a front end of the staking portion.

A hub unit bearing comprising:

• an outer race including a double row of outer race tracks provided in an inner peripheral surface;
• a hub including a double row of inner race tracks provided in an outer peripheral surface;
• and
• a plurality of rolling elements which are arranged for each row between the double row of the outer race tracks and the double row of the inner race tracks in a rolling manner,
• wherein the hub includes an inner race and a hub body,
• wherein the inner race includes an inner race track on the inside of an axial direction in the double row of the inner race tracks on the outer peripheral surface,
• wherein the hub body includes an inner race track which is formed in an outer peripheral surface of an axially intermediate portion directly or through another member and is located on the outside of the axial direction in the double row of the inner race tracks, a fitting cylinder portion which exists on the inside of the axial direction in relation to the inner race track on the outside of the axial direction and to which the inner race is externally fitted, and a staking portion which is bent outward in a radial direction from an axial inner end portion of the fitting cylinder portion and holds down an axial inner end surface of the inner race,
• wherein the inner race includes an engagement concave portion provided at one or a plurality of positions in a circumferential direction to open to the axial inner end surface and the inner peripheral surface, and
• wherein the hub body includes an engagement convex portion provided at one or a plurality of positions in the circumferential direction to engage with the engagement concave portion.

A method of manufacturing a hub unit bearing,

• wherein the hub unit bearing includes an outer race including an outer race track, a hub including an inner race track, and a plurality of rolling elements arranged between the outer race track and the inner race track,
• wherein the hub includes a hub body including an outer surface and an inner race disposed on the outer surface of the hub body and held by the hub body,
• wherein the method comprises:
• preparing the inner race including an engagement concave portion and an auxiliary member including a blade;
• combining the hub body and the inner race with each other in an axial direction;
• moving the auxiliary member and the hub body relatively in the axial direction so that a part of the hub body deformed (shaved) by the blade in the axial relative movement is disposed inside the engagement concave portion of the inner race;
• and
• forming a staking portion with respect to the inner race in the hub body.