TWI809104B - Disc brake rotor - Google Patents

Abstract

A disc brake rotor comprises a hub engagement part and an outer peripheral part. The hub engagement part includes an inner periphery. The inner periphery has an inner serration configured to engage with a hub assembly. The outer peripheral part is provided radially outwardly of the hub engagement part with respect to a rotational center axis of the disc brake rotor. The outer peripheral part is integrally provided with the hub engagement part as a one-piece unitary member. The hub engagement part and the outer peripheral part are made of a single material.

Description

disc brake rotor

The present invention relates to disc brake rotors.

A conventional braking system includes a disc brake rotor, and a brake caliper configured to apply a braking force to the disc brake rotor. This disc brake rotor basically includes a hub engaging part and an outer peripheral part. Conventional disc brake rotors have the following disadvantages: higher cost, higher weight, lower productivity of hub joint parts, lower design freedom, poor rotational stability, poor miniaturization configuration, and poor disc brake rotor center of gravity.

According to a first aspect of the present invention, a disc brake rotor includes a hub engaging member and an outer peripheral member. The hub engaging part includes an inner perimeter. The inner periphery has inner serrations configured to engage the hub assembly. The outer peripheral part is disposed radially outward of the hub engaging part with respect to the rotation center axis of the disc brake rotor. The outer peripheral part and the hub engaging part are integrally provided as a one-piece unitary member. Hub joint parts and outer The peripheral parts are made of a single material.

With the disc brake rotor according to the first aspect, since the outer peripheral part and the hub engaging part are integrally provided as a one-piece single member, and because the hub engaging part and the outer peripheral part are made of a single material, it is possible to Reduce the cost of disc brake rotors.

According to a second aspect of the present invention, a disc brake rotor includes a hub engaging member and an outer peripheral member. The hub engaging part includes an inner perimeter. The inner periphery has inner serrations configured to engage the hub assembly. The hub engaging part has a radial dimension defined radially with respect to the rotational center axis of the disc brake rotor. The outer peripheral part is disposed radially outward of the hub engaging part with respect to the rotation center axis. The outer peripheral part has an axial thickness defined along the rotational center axis. The radial dimension of the hub engaging part is smaller than the axial thickness of the outer peripheral part.

With the disc brake rotor according to the second aspect, since the radial dimension of the hub engaging member is smaller than the axial thickness of the outer peripheral member, the weight of the disc brake rotor can be saved.

According to a third aspect of the present invention, a disc brake rotor includes a hub engaging member and an outer peripheral member. The hub engaging part includes an inner perimeter and an outer perimeter. The inner periphery has inner serrations configured to engage the hub assembly. The outer periphery has outer serrations. The outer peripheral part is disposed radially outward of the hub engaging part with respect to the rotation center axis of the disc brake rotor.

With the disc brake rotor according to the third aspect, the weight of the disc brake rotor can be saved.

According to a fourth aspect of the present invention, the disc brake rotor according to the third aspect is constructed such that the hub engaging member has a corrugated shape defined by inner serrations and outer serrations when viewed along the rotation center axis.

With the disc brake rotor according to the fourth aspect, the productivity of hub joint parts can be improved.

According to a fifth aspect of the present invention, the disc brake rotor according to any one of the second to fourth aspects is constructed such that the outer peripheral part and the hub engaging part are integrally provided as a one-piece unitary member. The hub engaging part and the outer peripheral part are made of a single material.

With the disc brake rotor according to the fifth aspect, the cost of the disc brake rotor can be reduced.

According to a sixth aspect of the present invention, the disc brake rotor according to any one of the first to fifth aspects is constructed such that the hub engaging member has an axial dimension defined along the rotation center axis. The outer peripheral part includes a first axial surface facing a first direction parallel to the rotation center axis, and a second axial surface facing a second direction opposite to the first direction. The outer perimeter member defines an axial thickness between the first axial surface and the second axial surface.

With the disc brake rotor according to the sixth aspect, the outer peripheral member can be used as the friction member or as a portion that the friction member contacts.

According to a seventh aspect of the present invention, the disc brake rotor according to the sixth aspect is constructed such that the axial dimension of the hub engaging member is different from the axial thickness of the outer peripheral member.

With the disc brake rotor according to the seventh aspect, the degree of freedom in the design of the disc brake rotor can be enhanced.

According to an eighth aspect of the present invention, the disc brake rotor according to the seventh aspect is constructed such that the axial dimension is greater than three times the axial thickness.

With the disc brake rotor according to the eighth aspect, the rotation of the disc brake rotor can be stabilized.

According to a ninth aspect of the present invention, the disc brake rotor according to the seventh or eighth aspect is constructed such that the axial dimension is less than six times the axial thickness.

With the disc brake rotor according to the ninth aspect, it is possible to save the cost of the disc brake rotor while stabilizing the rotation of the disc brake rotor.

According to a tenth aspect of the present invention, the disc brake rotor according to any one of the sixth to ninth aspects is constructed such that the first axial surface is provided within the range of the axial dimension of the hub engaging member.

With the disc brake rotor according to the tenth aspect, the disc brake rotor can be made compact.

According to an eleventh aspect of the present invention, the disc brake rotor according to the tenth aspect is constructed such that the hub engaging member includes a first axial end portion and a second axial end portion. The axial dimension of the hub engaging member is defined along the rotational center axis between a first axial end and a second axial end. The first axial end portion is at least partially arranged on the same level as the first axial surface when viewed in a direction perpendicular to the rotation center axis.

With the disc brake rotor according to the eleventh aspect, the disc brake rotor can be miniaturized.

According to a twelfth aspect of the present invention, the disc brake rotor according to any one of the first to eleventh aspects further includes an intermediate member coupling the outer peripheral member to the hub engaging member.

With the disc brake rotor according to the twelfth aspect, a disc brake rotor having a larger outer diameter can be provided.

According to a thirteenth aspect of the present invention, the disc brake rotor according to the twelfth aspect is constructed such that the intermediate member includes a plurality of arm portions radially extending from the outer peripheral member toward the hub joint member with respect to the rotation center axis. Extend inward.

With the disc brake rotor according to the thirteenth aspect, the weight of the disc brake rotor can be saved.

According to a fourteenth aspect of the present invention, the disc brake rotor according to the thirteenth aspect is constructed such that the outer peripheral member includes a first axial surface facing a first direction parallel to the rotation center axis. At least one of the plurality of arms includes a first axial arm surface facing in a first direction. The first axial arm surface is offset from the first axial surface along the rotational center axis.

With the disc brake rotor according to the fourteenth aspect, a preferable center of gravity of the disc brake rotor can be realized along the rotation center axis.

According to a fifteenth aspect of the present invention, the disc brake rotor according to the fourteenth aspect is constructed such that the outer peripheral member includes a second axial surface facing a second direction opposite to the first direction. The at least one arm of the plurality of arms includes a second axial arm surface facing in a second direction. The second axial arm surface is offset from the second axial surface along the rotational center axis.

With the disc brake rotor according to the fifteenth aspect, a preferable center of gravity of the disc brake rotor can be realized along the rotation center axis.

According to a sixteenth aspect of the present invention, the disc brake rotor according to the fifteenth aspect is constructed such that the first axial arm surface is provided between the first axial surface and the second axial surface along the rotation center axis. between.

With the disc brake rotor according to the sixteenth aspect, a preferable center of gravity of the disc brake rotor can be realized along the rotation center axis.

According to a seventeenth aspect of the present invention, the disc brake rotor according to the fifteenth or sixteenth aspect is constructed such that the second axial arm surface extends from a range between the first axial surface and the second axial surface. Offset along the axis of rotation.

With the disc brake rotor according to the seventeenth aspect, a preferable center of gravity of the disc brake rotor can be realized along the rotation center axis.

According to an eighteenth aspect of the present invention, the disc brake rotor according to any one of the first to seventeenth aspects further includes a flange having an annular shape. The hub engaging part includes a first axial end and a second axial end, and the hub engaging part extends from the first axial end to the second axial end along the rotation center axis. A flange extends radially outward from the first axial end of the hub engaging member relative to the central axis of rotation.

With the disc brake rotor according to the eighteenth aspect, the strength around the hub engaging member can be improved.

According to a nineteenth aspect of the present invention, the disc brake rotor according to the eighteenth aspect is constructed such that the flange includes a radially inner edge and a radially outer edge. The radially inner edge is coupled to the first axial end of the hub engaging member. The radially outer edge is disposed radially outward of the radially inner edge. The radially outer edge is offset from the radially inner edge along the rotational center axis toward the second axial end of the hub engaging member.

With the disc brake rotor according to the nineteenth aspect, interference between the flange and the locking member of the hub assembly can be reduced.

According to a twentieth aspect of the present invention, the disc brake rotor according to any one of the first to nineteenth aspects is constructed such that the outer peripheral member includes a plurality of openings.

With the disc brake rotor according to the twentieth aspect, the weight of the disc brake rotor can be saved.

According to a twenty-first aspect of the present invention, a disc brake rotor includes a hub engaging member and an outer peripheral member. The hub engaging part includes an inner perimeter. The inner periphery has inner serrations configured to engage the hub assembly. The outer peripheral part is disposed radially outward of the hub engaging part with respect to the rotation center axis of the disc brake rotor. The outer peripheral part is integrally formed with the hub engaging part by an integral forming process.

With the disc brake rotor according to the twenty-first aspect, since the outer peripheral part and the hub engaging part are integrally provided as a one-piece unitary member, and because the hub engaging part and the outer peripheral part are made of a single material, Therefore, the cost of the disc brake rotor can be reduced.

A better understanding of the invention and its many attendant advantages can be readily obtained as the invention and its many advantages attendant with it are better understood by reference to the following detailed description considered in conjunction with the accompanying drawings. a more complete evaluation.

Embodiments are described below with reference to the accompanying drawings, wherein like reference numerals designate corresponding or identical elements in different drawings.

Referring first to FIG. 1 , a disc brake rotor 10 according to an embodiment includes a hub engaging member 12 and an outer peripheral member 14 . The outer peripheral member 14 is disposed radially outward of the hub engaging member 12 with respect to the rotation center axis A1 of the disc brake rotor 10 . The disc brake rotor 10 is rotatable in a rotation direction D11 with respect to the rotation center axis A1. The direction of rotation D11 is defined along the circumferential direction D1 of the disc brake rotor 10 . The disc brake rotor 10 is used in a human powered vehicle. In particular, the disc brake rotor 10 is used in a bicycle, and thus the disc brake rotor 10 is a bicycle disc brake rotor.

In this embodiment, the hub engaging part 12 has a tubular shape, and the outer peripheral part 14 has a ring shape. The outer peripheral part 14 is radially spaced from the hub engaging part 12 . The outer perimeter member 14 includes a plurality of openings 16 . The outer perimeter member 14 includes a plurality of recesses 18 at the outer perimeter. However, at least one of the plurality of openings 16 may be omitted from the outer peripheral member 14 . At least one of the plurality of recesses 18 may be omitted from the outer peripheral member 14 .

The disc brake rotor 10 further includes an intermediate member 20 coupling the outer peripheral member 14 to the hub engaging member 12 . The intermediate member 20 couples the outer peripheral member 14 to the hub engaging member 12 to transmit the braking force F1 from the outer peripheral member 14 to the hub engaging member 12 . The intermediate part 20 is arranged radially between the hub engaging part 12 and the outer peripheral part 14 .

The intermediate part 20 includes a plurality of arm parts 22 extending radially inwardly from the outer peripheral part 14 toward the hub engaging part 12 with respect to the rotation center axis A1 . The intermediate part 20 contains a plurality of intermediate openings 24 . Each middle opening 24 is disposed between two adjacent arm portions 22 in the plurality of arm portions 22 along the circumferential direction D1. However, the structure of the intermediate member 20 is not limited to this embodiment. The intermediate part 20 may have a ring shape. The intermediate part 20 may be omitted from the disc brake rotor 10 .

As seen in FIG. 2 , the hub engaging member 12 includes an inner perimeter 26 . The inner periphery 26 has inner serrations 28 configured to engage the hub assembly H. As shown in FIG. The hub engaging part 12 includes an outer periphery 30 . The outer periphery 30 has outer serrations 32 . The outer peripheral member 14 is disposed radially outward of the hub engaging member 12 with respect to the rotation center axis A1 of the disc brake rotor 10 . The outer serrations 32 are configured not to engage the hub assembly H. As shown in FIG.

As seen in FIG. 3 , the hub engaging member 12 has a corrugated shape defined by inner serrations 28 and outer serrations 32 when viewed along the rotational center axis A1 . The inner serration 28 includes a plurality of inner teeth 28A. The plurality of internal teeth 28A protrude radially inward toward the rotation center axis A1. The outer serration 32 includes a plurality of outer teeth 32A. The plurality of external teeth 32A extend radially outward. The external teeth 32A have a cross-sectional shape different from that of the internal teeth 28A. The inner tooth 28A includes a first flat surface 28B and a second flat surface 28C. The outer teeth 32A include a curvilinear surface 32B. However, the external teeth 32A may have the same cross-sectional shape as that of the internal teeth 28A.

As seen in FIG. 4 , the outer peripheral part 14 is integrally provided with the hub engaging part 12 as a one-piece unitary member. The hub engaging part 12 and the outer peripheral part 14 are made of a single material. The outer peripheral part 14 is integrally formed with the hub engaging part 12 by an integral forming process. Examples of a single material include stainless steel. Examples of the integral molding process include a pressing process (stamping process) and a casting process using molds, respectively. In this embodiment, the disc brake rotor 10 is provided by a pressing process using a stainless steel plate. However, the single material is not limited to stainless steel. The disc brake rotor 10 may be formed by a process other than an integral forming process.

In this embodiment, the outer peripheral part 14 is a unitary member integrally provided as a single piece with the hub engaging part 12 and the intermediate part 20 . The outer peripheral part 14 is a single member integrally provided with the hub joint part 12 and the plurality of arm parts 22 as a single piece. The hub engaging part 12 is a single member integrally provided with the aforementioned plurality of arm parts 22 of the intermediate part 20 as a single piece.

As seen in FIG. 5 , the hub engaging part 12 has a radial dimension DM1 defined radially with respect to the rotation center axis A1 of the disc brake rotor 10 . The outer peripheral part 14 has an axial thickness T1 defined along the rotation center axis A1. In this embodiment, the outer peripheral part 14 includes a first axial surface 14A facing a first direction D21 parallel to the rotation center axis A1. The outer peripheral part 14 includes a second axial surface 14B facing a second direction D22 opposite to the first direction D21. The outer peripheral component 14 defines an axial thickness T1 between the first axial surface 14A and the second axial surface 14B. For example, the axial thickness T1 is the maximum thickness of the outer peripheral member 14 . The axial thickness T1 is preferably in the range of 1.2mm (millimeter) to 3mm. The axial thickness T1 is more preferably in the range of 1.5 mm to 2 mm. In this embodiment, the axial thickness T1 is 1.75mm. However, the axial thickness T1 is not limited to this embodiment and the above range.

In this embodiment, the radial dimension DM1 of the hub engaging part 12 is smaller than the axial thickness T1 of the outer peripheral part 14 . For example, the radial dimension DM1 is the maximum dimension of the hub engaging part 12 in the radial direction of the hub engaging part 12 . However, the axial thickness T1 of the outer peripheral member 14 may be equal to or smaller than the radial dimension DM1 of the hub engaging member 12 .

In this embodiment, the first axial surface 14A is in slidable contact with a first brake pad of a brake caliper to receive a braking force F1 ( FIG. 1 ) from the brake caliper. The second axial surface 14B is in slidable contact with a second brake pad of the brake caliper to receive a braking force F1 ( FIG. 1 ) from the brake caliper. In this embodiment, both the first axial surface 14A and the second axial surface 14B are thus provided as friction surfaces. However, the disc brake rotor 10 may include at least one friction surface on the outer peripheral member 14 . Additionally, the friction surface may be provided on a separate member that is fixedly attached to the outer perimeter component 14 . For example, as seen in FIG. 6 , the friction member FM1 may be attached to the first axial surface 14A of the outer peripheral part 14 . The friction member FM2 may be attached to the second axial surface 14B of the outer peripheral part 14 .

As seen in FIG. 5 , the hub engaging part 12 has an axial dimension DM2 defined along the rotational center axis A1 . The axial dimension DM2 of the hub engaging part 12 is different from the axial thickness T1 of the outer peripheral part 14 . The axial dimension DM2 is greater than three times the axial thickness T1. The axial dimension DM2 is less than six times the axial thickness T1. However, the axial dimension DM2 may be less than three times the axial thickness T1. The axial dimension DM2 may be greater than six times the axial thickness T1. The axial dimension DM2 is preferably in the range of 5mm to 15mm. The axial dimension DM2 is more preferably in the range of 8mm to 12mm. In this embodiment, the axial dimension DM2 is 10.9mm. However, the axial dimension DM2 is not limited to this embodiment and the above range.

As seen in FIG. 7 , the hub engaging member 12 includes a first axial end portion 12A and a second axial end portion 12B. An axial dimension DM2 of the hub engaging part 12 is defined along the rotational center axis A1 between the first axial end portion 12A and the second axial end portion 12B.

As seen in FIG. 5 , the first axial end portion 12A is at least partially arranged at the same height as the first axial surface 14A when viewed in a direction perpendicular to the rotation center axis A1 . The first axial end portion 12A is at least partially arranged at the same axial position as that of the first axial surface 14A when viewed in a direction perpendicular to the rotation center axis A1. However, the relationship between the first axial end portion 12A and the first axial surface 14A is not limited to this embodiment.

As seen in FIG. 4 , at least one of said plurality of arms 22 comprises a first axial arm surface 22A facing in a first direction D21 . The first axial arm surface 22A is offset from the first axial surface 14A along the rotation center axis A1. The at least one arm of the plurality of arms 22 comprises a second axial arm surface 22B facing the second direction D22. The second axial arm surface 22B is offset from the second axial surface 14B along the rotation center axis A1. The first axial arm surface 22A is disposed between the first axial surface 14A and the second axial surface 14B along the rotation center axis A1 . The second axial arm surface 22B is offset from the range between the first axial surface 14A and the second axial surface 14B along the rotation center axis A1. However, the positional relationship between the first axial surface 14A, the second axial surface 14B, the first axial arm surface 22A, and the second axial arm surface 22B is not limited to this embodiment.

The first axial surface 14A is disposed within the axial dimension DM2 of the hub engaging member 12 . In this embodiment, the first axial surface 14A, the second axial surface 14B, the first axial arm surface 22A, and the second axial arm surface 22B are all set to the axial dimension of the hub engaging member 12 within the range of DM2. The axial position of the first axial surface 14A coincides with the end of the range of the axial dimension DM2. However, the positional relationship between the first axial surface 14A, the second axial surface 14B, the first axial arm surface 22A, the second axial arm surface 22B, and the axial dimension DM2 is not limited to this embodiment.

As seen in FIG. 8 , the disc brake rotor 10 further includes a flange 34 having an annular shape. The hub engaging member 12 extends from the flange 34 along the rotation center axis A1.

As seen in FIG. 7 , the hub engaging member 12 includes a first axial end portion 12A and a second axial end portion 12B. The hub engaging member 12 extends from the first axial end portion 12A to the second axial end portion 12B along the rotation center axis A1. The flange 34 extends radially outward from the first axial end portion 12A of the hub engaging member 12 with respect to the rotation center axis A1 .

The flange 34 includes a radially inner edge 34A and a radially outer edge 34B. The radially inner edge 34A is coupled to the first axial end 12A of the hub engaging member 12 . The radially outer edge 34B is disposed radially outward of the radially inner edge 34A. The radially outer edge 34B is offset from the radially inner edge 34A along the rotational center axis A1 toward the second axial end 12B of the hub engaging member 12 .

As seen in FIG. 7 , the flange 34 includes a first flange member 36 and a second flange member 38 . The first flange part 36 includes a radially inner edge 34A of the flange 34 . The second flange part 38 includes the radially outer edge 34B of the flange 34 . The first flange member 36 extends radially outward from the hub engaging member 12 . The second flange member 38 extends radially outward from the first flange member 36 . The first flange member 36 includes a first axial flange surface 36A, and a second axial flange surface 36B disposed on the opposite side from the first axial flange surface 36A. The second flange member 38 includes a third axial flange surface 38A, and a fourth axial flange surface 38B disposed on the side opposite to the third axial flange surface 38A.

In this embodiment, the first axial flange surface 36A and the second axial flange surface 36B are arranged perpendicular to the rotation center axis A1. The third axial flange surface 38A and the fourth axial flange surface 38B are inclined with respect to the rotation center axis A1 , the first axial flange surface 36A, and the second axial flange surface 36B. The first axial flange surface 36A is offset from the first axial arm surface 22A and the second axial arm surface 22B along the rotational center axis A1 . The second axial flange surface 36B is offset from the first axial arm surface 22A and the second axial arm surface 22B along the rotational center axis A1 .

The third axial flange surface 38A is coupled to the first axial flange surface 36A and the first axial arm surface 22A. The fourth axial flange surface 38B is coupled to the second axial flange surface 36B and the second axial arm surface 22B. However, the first axial flange surface 36A, the second axial flange surface 36B, the third axial flange surface 38A, the fourth axial flange surface 38B, the first axial arm surface 22A, and the second The positional relationship between the axial arm surfaces 22B is not limited to this embodiment. The structure of the flange 34 is not limited to this embodiment.

As seen in FIG. 7 , the disc brake rotor 10 further includes a knurled member 40 . The knurled member 40 extends from the first axial end portion 12A of the hub engaging member 12 to the flange 34 in the radial direction. A knurled member 40 is provided on the first axial flange surface 36A of the flange 34 . The knurled member 40 may come into contact with the lock member H1 of the hub assembly H in a state where the disc brake rotor 10 is mounted on the hub assembly H. As shown in FIG. The knurled member 40 includes a plurality of protrusions 40A extending from the first axial flange surface 36A of the flange 34 in the first direction D21 along the rotation center axis A1 . The axial position of the root of the protrusion 40A coincides with the first axial flange surface 36A.

As seen in FIG. 9 , the plurality of protrusions 40A are arranged in the circumferential direction D1 and provided around the inner periphery 26 of the hub engaging member 12 . The structure of the knurled member 40 is not limited to this embodiment. The knurled member 40 may be omitted from the disc brake rotor 10 .

As seen in FIG. 10, the intermediate member 20 includes a plurality of sloped portions 42 (FIG. 1). The inclined portion 42 is provided between the outer peripheral member 14 and the radially outer end portion of the arm portion 22 . The inclined portion 42 includes a first inclined surface 42A, that is, a second inclined surface 42B disposed on the side opposite to the first inclined surface 42A. The first inclined surface 42A and the second inclined surface 42B are inclined with respect to the rotation center axis A1. The first inclined surface 42A is coupled to the first axial surface 14A and the first axial arm surface 22A. The second inclined surface 42B is coupled to the second axial surface 14B and the second axial arm surface 22B. However, the structure of the intermediate member 20 is not limited to this embodiment. The inclined portion 42 may be omitted from the intermediate part 20 .

The outer surfaces of the hub engaging member 12, the outer peripheral member 14, and the intermediate member 20 may be at least partially painted, plated, or anodized.

In disc brake rotors, a wide variety of outside diameter sizes are expected. However, the present invention is adaptable to disc brake rotors of any size.

The term "comprising" and its derivatives used herein refer to clearly defining the existence of the stated features, elements, components, groups, integers, and/or steps but not excluding other unmentioned features, elements, components, Open-ended terms for the presence of groups, integers, and/or steps. This concept also applies to words with similar meanings, such as the terms "having", "including", and their derivatives.

The terms "member," "section," "portion," "part," "element," "body," and "structure" when used in the singular can have the dual meaning of a single part or a plurality of parts.

The serial numbers such as "first" and "second" recorded in this application are only identification numbers and do not have any other meanings, such as a specific order and the like. Also, for example, the term "first element" does not imply the presence of a "second element" by itself, and the term "second element" does not imply the existence of a "first element" by itself.

As used herein, the term "a pair or a pair" not only covers a configuration in which the paired elements have the same shape or structure, but also includes a configuration in which the paired elements have different shapes or structures from each other.

The terms "a or an", "one or more", and "at least one" are used interchangeably herein.

Finally, terms of degree such as "substantially or substantially", "approximately or approximately", and "approximately or approximately" as used herein mean that the term they modify has a reasonable amount of deviation such that the end result will not be significantly changed. All numerical values recited in this application may be read to include terms such as "substantially or substantially", "approximately or approximately", and "nearly or approximately".

Obviously, many modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the present invention may be practiced otherwise than as expressly described herein.

10‧‧‧Disc brake rotor 12‧‧‧Wheel hub joint parts 12A‧‧‧first axial end 12B‧‧‧Second axial end 14‧‧‧Outer peripheral components 14A‧‧‧first axial surface 14B‧‧‧Second axial surface 16‧‧‧opening 18‧‧‧Concave 20‧‧‧Intermediate parts 22‧‧‧arm 22A‧‧‧The first axial arm surface 22B‧‧‧Second axial arm surface 24‧‧‧Middle opening 26‧‧‧inner periphery 28‧‧‧Internal sawtooth 28A‧‧‧internal teeth 28B‧‧‧First flat surface 28C‧‧‧Second flat surface 30‧‧‧outer perimeter 32‧‧‧External Serration 32A‧‧‧External teeth 32B‧‧‧curved surface 34‧‧‧flange 34A‧‧‧radial inner edge 34B‧‧‧radial outer edge 36‧‧‧First flange part 36A‧‧‧First axial flange surface 36B‧‧‧Second axial flange surface 38‧‧‧Second flange part 38A‧‧‧Third axial flange surface 38B‧‧‧Fourth axial flange surface 40‧‧‧Knurled parts 40A‧‧‧Protrusion 42‧‧‧Inclined part 42A‧‧‧First inclined surface 42B‧‧‧Second inclined surface A1‧‧‧rotation center axis D1‧‧‧circumferential direction D11‧‧‧rotation direction D21‧‧‧first direction D22‧‧‧The second direction DM1‧‧‧radial dimension DM2‧‧‧axial dimension F1‧‧‧braking force FM1‧‧‧Friction member FM2‧‧‧Friction member H‧‧‧wheel assembly H1‧‧‧Locking member T1‧‧‧axial thickness

FIG. 1 is a perspective view of a disc brake rotor according to an embodiment.

FIG. 2 is a partial side view of the disc brake rotor shown in FIG. 1. FIG.

FIG. 3 is a partial sectional view of the disc brake rotor taken along line III-III of FIG. 4. FIG.

FIG. 4 is a partial sectional view of the disc brake rotor taken along line IV-IV of FIG. 1. FIG.

FIG. 5 is a partial sectional view of the disc brake rotor taken along line V-V of FIG. 1. FIG.

Fig. 6 is a partial sectional view of a disc brake rotor according to a modification.

Fig. 7 is a partially enlarged sectional view of the disc brake rotor shown in Fig. 5 .

FIG. 8 is a partial perspective view of the disc brake rotor shown in FIG. 1 .

FIG. 9 is another partial perspective view of the disc brake rotor shown in FIG. 1 .

Fig. 10 is a partially enlarged sectional view of the disc brake rotor shown in Fig. 4 .

10: Disc brake rotor

12: Hub joint parts

14: Outer peripheral parts

16: opening

18: Concave

20: Middle part

22: Arm

24: middle opening

42: Inclined part

A1: Rotation center axis

D1: Circumferential direction

D11: Direction of rotation

D21: First direction

D22: Second direction

F1: braking force

Claims (21)

A disc brake rotor comprising: a hub engaging member including an inner perimeter having inner serrations configured to engage a hub assembly and an outer perimeter having outer serrations; and an outer perimeter member opposing The central axis of rotation of the disc brake rotor is disposed radially outward of the hub engaging part, the outer peripheral part is integrally provided with the hub engaging part as a one-piece unitary member, the hub engaging part and the The outer peripheral part is made of a single material. A disc brake rotor comprising: a hub engaging member including an inner periphery having inner serrations configured to engage a hub assembly and an outer periphery having outer serrations, the hub engaging member having relative A radial dimension defined radially by the rotation center axis of the disc brake rotor; and an outer peripheral member disposed radially outward of the hub engagement member with respect to the rotation center axis, the outer peripheral member having along The central axis of rotation is defined by an axial thickness, and the radial dimension of the hub engaging member is smaller than the axial thickness of the outer peripheral member. A disc brake rotor comprising: a hub engaging member including an inner perimeter having inner serrations configured to engage a hub assembly and an outer perimeter having outer serrations teeth; and an outer peripheral member disposed radially outward of the hub engaging member with respect to the rotation center axis of the disc brake rotor. The disc brake rotor according to claim 3, wherein the hub engaging member has a corrugated shape defined by the inner serrations and the outer serrations when viewed along the rotation center axis. The disc brake rotor as described in claim 2 or claim 3, wherein the outer peripheral part and the hub engaging part are integrally provided as a one-piece single member, and the hub engaging part and the outer The peripheral parts are made of a single material. The disc brake rotor according to any one of the claims 1 to 3, wherein the hub engaging member has an axial dimension defined along the rotation center axis, and the outer peripheral member includes a face parallel to A first axial surface in a first direction of the rotation center axis, and a second axial surface facing in a second direction opposite to the first direction, and the outer peripheral member is formed between the first axial surface and the second An axial thickness is defined between the axial surfaces. The disc brake rotor according to claim 6, wherein the axial dimension of the hub engaging member is different from the axial thickness of the outer peripheral member. The disc brake rotor as described in claim 7 of the patent application, wherein the axial dimension is greater than three times the axial thickness. The disc brake rotor as described in claim 7 of the patent application, wherein the axial dimension is less than six times the axial thickness. The disc brake rotor according to claim 6, wherein the first axial surface is disposed within the range of the axial dimension of the hub engaging member. The disc brake rotor according to claim 10, wherein the hub engaging member includes a first axial end and a second axial end, and the axial dimension of the hub engaging member is along the rotation center axis defined between the first axial end and the second axial end, and the first axial end is at least partially disposed with the on the same height as the first axial surface. The disc brake rotor described in any one of items 1 to 3 of the scope of the patent application further includes: An intermediate member couples the outer peripheral member to the hub engaging member. The disc brake rotor according to claim 12, wherein the intermediate member includes a plurality of arm portions radially inward from the outer peripheral member toward the hub engaging member with respect to the rotation center axis extend. The disc brake rotor according to claim 13, wherein the outer peripheral member includes a first axial surface facing a first direction parallel to the rotation center axis, at least one of the plurality of arm portions A first axial arm surface is included facing the first direction, and the first axial arm surface is offset from the first axial surface along the rotational center axis. The disc brake rotor according to claim 14, wherein the outer peripheral member includes a second axial surface facing a second direction opposite to the first direction, the at least one arm of the plurality of arm portions The portion includes a second axial arm surface facing the second direction, and the second axial arm surface is offset from the second axial surface along the rotational center axis. The disc brake rotor according to claim 15, wherein the first axial arm surface is disposed between the first axial surface and the second axial surface along the rotation center axis. The disc brake rotor according to claim 15, wherein the second axial arm surface is offset from the range between the first axial surface and the second axial surface along the rotation center axis . The disc brake rotor according to any one of claims 1 to 3, further comprising: a flange having an annular shape, wherein the hub engaging member comprises a first axial end and a second shaft To the end portion, the hub engaging part extends from the first axial end along the rotation center axis to the second axial end, and the flange is opposite from the first axial end of the hub engaging part Extending radially outward from the rotation center axis. The disc brake rotor according to claim 18, wherein the flange comprises: a radially inner edge coupled to the first axial end of the hub engaging member; and a radially outer edge, It is disposed radially outward of the radially inner edge, the radially outer edge being offset from the radially inner edge along the rotational center axis towards the second axial end of the hub engaging part. The disc brake rotor according to any one of the claims 1 to 3, wherein the outer peripheral part includes a plurality of openings. A disc brake rotor comprising: a hub engaging member including an inner perimeter having inner serrations configured to engage a hub assembly and an outer perimeter having outer serrations; and an outer perimeter member opposing The central axis of rotation of the disc brake rotor is disposed radially outward of the hub engaging member, and the outer peripheral member is integrally formed with the hub engaging member by an integral forming process.