JP6696919B2 - Disc brake rotor adapter, disc brake rotor including the adapter, and magnetic generator - Google Patents

Description

  The present invention relates to a disc brake rotor adapter, a disc brake rotor including the adapter, and a magnetic field generator.

  Techniques for detecting the rotational state of wheels are known. For example, Patent Document 1 discloses that a magnet is attached to a spoke of a wheel and the sensor detects the magnet in order to detect a wheel rotation state.

JP, 10-076988, A

  An object of the present invention is to provide an adapter for a disc brake rotor, a disc brake rotor including this adapter, and a magnetic field generator that can be suitably used for detecting the rotation state of a bicycle wheel.

One form of an adapter for a disc brake rotor according to the first aspect of the present invention is an adapter for attaching a body of the disc brake rotor to a hub of a bicycle, and a second spline that can be fitted to a first spline provided on the hub. Irrespective of the fixing function of the inner peripheral portion including the spline and the outer peripheral portion to which the main body of the disc brake rotor is attached, the magnetic field generating portion, and the fixing member for fixing the adapter to the hub. And a mounting section for mounting the magnetic field generation section on the adapter body.
According to the first aspect, it becomes possible to detect the rotation state of the wheel of the bicycle by using the magnetic field generator mounted on the adapter of the disc brake rotor.

In the adapter for the disc brake rotor according to the second aspect according to the first aspect, the mounting portion is configured to be attachable to and detachable from the adapter body.
According to the second aspect, the magnetism generator can be attached to the adapter of the disc brake rotor according to the user's request, so that usability is improved.

In the adapter for the disc brake rotor according to the third aspect according to the first or second aspect, the mounting section includes a retaining section that retains the magnetic field generating section and an engaging section that engages with the adapter body.
According to the third aspect, since the magnetism generating portion is held by the holding portion, it can be stably attached to the adapter of the disc brake rotor.

In the adapter for the disc brake rotor according to the fourth aspect according to the third aspect, the engaging portion includes a first screw portion.
According to the fourth aspect, the magnetic field generator can be easily attached to the adapter of the disc brake rotor by the first screw portion.

In the adapter for the disc brake rotor according to the fifth aspect according to the fourth aspect, the adapter body includes a second screw portion with which the first screw portion engages.
According to the fifth aspect, the magnetic field generating portion can be easily attached to the adapter of the disc brake rotor by engaging the first screw portion and the second screw portion.

In the adapter for a disc brake rotor according to the sixth aspect according to the fourth aspect, the engaging portion is formed separately from the holding portion, and the holding portion includes a first through hole through which the engaging portion passes, A third screw part that engages with the first screw part in a state where the engaging part penetrates the first through hole.
According to the sixth aspect, the magnetic field generating portion can be easily attached to the adapter of the disc brake rotor by engaging the first screw portion and the third screw portion.

In the adapter for the disc brake rotor according to the seventh aspect according to the fourth aspect, the engaging portion is formed separately from the holding portion, and the adapter body includes a second through hole through which the engaging portion passes. The holding part includes a fourth screw part that engages with the first screw part in a state where the engaging part penetrates the second through hole.
According to the seventh aspect, by engaging the first screw portion and the fourth screw portion, the magnetic field generator can be easily attached to the adapter of the disc brake rotor.

In the adapter for the disc brake rotor according to the eighth aspect according to the first aspect, the mounting portion is formed integrally with the adapter body.
According to the eighth aspect, the magnetic field generator can be stably attached to the adapter body.

In the adapter for the disc brake rotor of the ninth side surface according to any one of the first to seventh side surfaces, the outer peripheral portion includes a plurality of protruding portions that protrude radially outward and to which the main body of the disc brake rotor is attached. ..
According to the ninth aspect, the magnetic field generator can be attached to the protrusion.

In the adapter for the disc brake rotor according to the tenth side according to the ninth side, the magnetic field generator is provided between two adjacent protrusions.
According to the tenth aspect, since the magnetic field generator is provided between the two adjacent protrusions, it is possible to prevent the apparatus from becoming large.

In the adapter for the disc brake rotor according to the eleventh aspect according to the ninth aspect, the magnetic field generator is provided on the protrusion.
According to the eleventh aspect, the magnetic field generator can be provided on the protrusion.

In the adapter for a disc brake rotor according to the twelfth side according to the first side, the outer peripheral portion includes a plurality of protrusions that protrude outward in the radial direction and to which the body of the disc brake rotor is attached, and the protrusion includes the disc. The mounting portion includes a first hole for mounting a body of the brake rotor, and the mounting portion is inserted into the first hole and fixed to the protrusion.
According to the twelfth aspect, by inserting the mounting portion into the first hole, the magnetism generating portion can be stably fixed to the protruding portion. Further, by mounting the magnetic field generator to the adapter of the disc brake rotor by using the first hole for mounting the body of the disc brake rotor, it is possible to suppress the increase in size of the device.

In the adapter for the disc brake rotor according to the thirteenth side according to the twelfth side, the mounting portion is inserted into the first hole and a second hole formed in the body of the disc brake rotor, and the protrusion and the It includes a connecting portion for connecting the body of the disc brake rotor.
According to the thirteenth aspect, by inserting the mounting portion into the first hole and the second hole, the magnetism generating portion can be stably fixed to the protruding portion. Further, by mounting the magnetic field generator to the adapter of the disc brake rotor by using the first hole and the second hole for mounting the body of the disc brake rotor, it is possible to suppress the size increase of the device.

In the adapter for the disc brake rotor according to any one of the first to thirteenth side surfaces of the fourteenth side surface, the magnetic field generator includes at least one permanent magnet.
According to the fourteenth aspect, the magnetism generator can stably generate magnetism.

In the adapter for the disc brake rotor of the fifteenth side according to any one of the first to ninth sides and the eleventh to thirteenth sides, the magnetism generating part is a permanent ring-shaped permanent magnet having a plurality of magnetic poles arranged in the circumferential direction. Including a magnet.
According to the fifteenth aspect, it is possible to improve the detection accuracy of the rotation state of the bicycle wheel by detecting the plurality of magnetic poles.

In the adapter of the disc brake rotor of the sixteenth side according to any one of the first to ninth sides and the eleventh to thirteenth sides, the mounting portion includes a ring-shaped base portion, and the magnetism generating portion is , A plurality of permanent magnets arranged at intervals in the circumferential direction of the base portion.
According to the sixteenth aspect, it is possible to improve the detection accuracy of the rotation state of the bicycle wheel by detecting the magnetism of the plurality of permanent magnets.

In the adapter for the disc brake rotor according to any one of the first to sixteenth side surfaces of the seventeenth side surface, the adapter further includes a heat insulating section that is disposed between the magnetic field generating section and the mounting section and that suppresses heat transfer. ..
According to the seventeenth aspect, the heat insulating portion can reduce the influence of heat on the magnetism generated from the magnetism generating portion.

In the adapter of the disc brake rotor of the eighteenth side according to any one of the first to seventeenth sides, the adapter body includes steel or aluminum alloy.
According to the eighteenth aspect, the adapter body can be formed of a suitable material.

One form of the disc brake rotor according to the nineteenth aspect of the present invention includes an adapter of the first to any one of to Disk brake rotor of the eighteenth aspect, the main body of the disk brake rotor attached to said adapter ..
According to the nineteenth aspect, the disc brake rotor can be preferably used for detecting the rotation state of the bicycle wheel.

One mode of a disc brake rotor according to the twentieth aspect of the present invention is to provide a plurality of first mounting portions that can be mounted on a bicycle hub with bolts, and a second mounting portion that is provided at a position different from the first mounting portion. A magnetic field generation unit and a mounting unit that removably mounts the magnetic field generation unit to the second mounting unit are included.
According to the twentieth aspect, the disc brake rotor attachable to the hub of the bicycle by the bolt can be preferably used for detecting the rotation state of the wheels of the bicycle.

Twenty-first aspect of the present invention One form of a magnetic field generator according to the present invention is a hub connecting part for attaching to a hub of a bicycle, a main body arranged radially outside the hub connecting part, and extending in the radial direction. A magnetic generator that can be attached to a disc brake rotor including an arm that connects the hub connecting portion and the main body to each other, wherein the magnetic generating portion, a holding portion that holds the magnetic generating portion, and the holding portion are integrated. And a third mounting portion that is mounted on the first side surface of the disc brake rotor in the axial direction, and the holding portion has the third mounting portion mounted on the first side surface. At least a part of the magnetic field generation portion is configured to project from the first side surface into a space between the arms that are adjacent to each other in the circumferential direction of the disc brake rotor.
According to the twenty-first aspect, the disc brake rotor can be preferably used to detect the rotation state of the bicycle wheel.

In the magnetism generator of the 22nd side according to the 21st side, the magnetism generating part is embedded in the holding part.
According to the twenty-second aspect, the magnetic field generator can be stably attached to the disc brake rotor.
One form of the magnetic field generator according to the twenty-third aspect of the present invention includes an inner peripheral portion including a second spline that can be fitted to a first spline provided on a bicycle hub, and a protrusion that protrudes radially outward, A magnetic field generator mounted on an adapter body having an outer peripheral part to which a body of a disc brake rotor is mounted, the magnetic field generating unit being independent of a fixing function of a fixing member for fixing the adapter body to the hub. In, a mounting portion that mounts the magnetic field generation portion to the adapter body, the mounting portion includes a holding portion that holds the magnetic field generation portion, and a plurality of engaging portions, the holding portion, The plurality of engaging portions are connected to the first portion and the second portion, and include a first portion and a second portion that are arranged with the protruding portion interposed therebetween.
In the magnetism generator of the twenty-fourth side according to the twenty-third side, the engaging portion is formed by a bolt.
In the magnetism generator on the twenty-fifth side according to the twenty-third or twenty-fourth side, at least two of the plurality of engaging portions are arranged at positions sandwiching the protruding portion in the circumferential direction.
In the magnetic generator of the 26th side surface according to any one of the 23rd to 25th side surfaces, the engagement portion includes a first screw portion, and the first portion has a first penetration portion through which the engagement portion penetrates. One through hole is formed, and a third screw portion that engages with the first screw portion is formed in the second portion.
In the magnetism generator of the 27th side according to any one of the 23rd to 26th sides, the magnetism generating part is provided in the 1st portion.
In the magnetism generator of the twenty-eighth aspect according to the twenty-seventh aspect, the first portion includes a recess, and the magnetism generator is housed in the recess.
In the magnetism generating device according to the twenty-ninth aspect according to the twenty-eighth aspect, the magnetism generating portion is entirely housed in the recess.
In the magnetism generator of the 30th side according to any one of the 23rd to 29th sides, the 1st portion is formed of aluminum alloy or resin.
One form of an adapter for a disc brake rotor according to the thirty-first aspect of the present invention includes the magnetic field generator according to any one of the twenty-third to thirtieth aspects and the adapter body.

  The adapter of the present disc brake rotor, the disc brake rotor including this adapter, and the magnetic field generator can be preferably used for detecting the rotation state of the bicycle wheel.

The side view at the time of seeing the disc brake rotor containing the adapter of a 1st embodiment from the 1st direction. The front view which shows the disc brake rotor of FIG. 1, and the hub of a bicycle. FIG. 3 is a partial cross-sectional view taken along line 3-3 of FIG. 1. The side view when the adapter of FIG. 1 is seen from a 1st direction. The side view when the adapter of FIG. 1 is seen from a 2nd direction. FIG. 6 is a sectional view taken along line 6-6 of FIG. 5. The side view at the time of seeing the adapter of a 2nd embodiment from the 2nd direction. Sectional drawing which follows the 8-8 line of FIG. The side view at the time of seeing the adapter of a 3rd embodiment from the 2nd direction. Sectional drawing in line 10-10 in FIG. The side view at the time of seeing the adapter of a 4th embodiment from the 2nd direction. FIG. 12 is a sectional view taken along line 12-12 of FIG. 11. The side view at the time of seeing the adapter of a 5th embodiment from the 2nd direction. FIG. 14 is a sectional view taken along line 14-14 of FIG. 13. The fragmentary sectional view of the adapter of the modification of 5th Embodiment. The fragmentary sectional view of the adapter of 6th Embodiment. The fragmentary sectional view of the adapter of the modification of 6th Embodiment. The fragmentary sectional view of the adapter of 7th Embodiment. The fragmentary sectional view of the adapter of the modification of 7th Embodiment. The fragmentary sectional view of the adapter of 8th Embodiment. The side view at the time of seeing the adapter of the 1st modification from the 2nd direction. The side view when the adapter of the 2nd modification is seen from the 2nd direction. The side view when the installation part of the 3rd modification is seen from the 1st direction. The side view when the adapter of the 4th modification is seen from the 2nd direction. The side view when the adapter of the 5th modification is seen from the 2nd direction. FIG. 26 is a sectional view taken along line 26-26 of FIG. 25. The partial cross section figure of the disc brake rotor of the 6th modification. The exploded perspective view of the disc brake rotor of the 7th modification. The perspective view of the disc brake rotor of the 8th modification. The perspective view of the mounting part of FIG. The exploded perspective view of the disc brake rotor of the 9th modification.

(First embodiment)
The disc brake rotor 10 including the adapter 20A of the first embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the disc brake rotor 10 includes an adapter 20A of the disc brake rotor 10 and a main body 12 of the disc brake rotor 10 attached to the adapter 20A.

  As shown in FIG. 2, the disc brake rotor 10 is fixed to the hub H by a fixing member R for fixing the adapter 20A to the hub H, and rotates integrally with the hub shell H1 of the hub H. The fixing member R has a fixing function for fixing the adapter 20A to the hub H. Specifically, with the second spline 32A of the disc brake rotor 10 fitted in the first spline H3 formed on the outer peripheral portion of the hub H, the disc brake rotor 10 is sandwiched between the hub H and the fixing member R. As a result, the disc brake rotor 10 is attached to the hub H. The first spline H3 is provided at the first end H4 of the hub shell H1 of the hub H in the direction along the rotation axis of the hub H. The first spline H3 is configured to include a plurality of uneven portions extending in the direction along the rotation axis of the hub H. A protrusion H5 is formed on the outer peripheral portion of the hub shell H1 adjacent to the first spline H3. The protrusion H5 is arranged closer to the second end H6 side of the hub shell H1 than the first spline H3 in the direction along the rotation axis of the hub H. The protrusion H5 protrudes outside the first spline H3 in the radial direction of the hub H. The protrusion H5 is preferably formed over the entire circumference of the hub shell H1. In FIG. 2, the hub H does not include a freewheel, but may be a hub including a freewheel.

  The fixing member R includes a disc-shaped disc portion R1 and a convex portion R2 protruding from the disc portion R1 in the axial direction of the disc brake rotor 10. Hereinafter, the axial direction of the disc brake rotor 10 will be simply referred to as “axial direction”. The convex portion R2 includes a male screw portion R3 on the outer peripheral portion. The male screw portion R3 of the convex portion R2 shown in FIG. 3 is configured to be screwed into the female screw portion H2 formed on the inner peripheral portion of the hub shell H1 of the hub H. When a male screw portion for fixing the fixing member R is formed on the outer peripheral portion of the hub shell H1 of the hub H, the convex portion R2 is omitted from the fixing member R, and the outer periphery of the hub shell H1 is formed on the inner peripheral portion of the disk portion R1. You may form the internal thread part which can be screwed in in the external thread part formed in a part.

  As shown in FIG. 1, the main body 12 is formed in a disc shape. The main body 12 includes a sliding surface 12A slidable with a brake pad (not shown) of the disc brake caliper. As shown in FIG. 2, the sliding surface 12A is formed on both side surfaces 12S of the main body 12 in the axial direction. The main body 12 is formed in an annular shape. 12 A of sliding surfaces are formed in the outer peripheral part of the main body 12. As shown in FIG. 3, a second hole 12B that penetrates the main body 12 in a direction parallel to the axial direction is provided near the inner peripheral portion of the main body 12. Through holes 12D that penetrate the main body 12 in a direction parallel to the axial direction may be formed in the outer peripheral portion, the inner peripheral portion, and the intermediate portion between the inner peripheral portion and the outer peripheral portion of the main body 12, respectively. preferable. It is preferable that the intermediate portion includes a plurality of arm portions 12C that are spaced apart from each other in the circumferential direction and that extend outward in the radial direction of the disc brake rotor 10. Hereinafter, the radial direction of the disc brake rotor 10 will be simply referred to as “radial direction”.

  The adapter 20A is for attaching the main body 12 of the disc brake rotor 10 to the bicycle hub H (see FIG. 2). As shown in FIG. 4, the adapter 20A includes an adapter main body 22, a magnetic field generator 24, and a mounting portion 26. In one example, the adapter 20A further includes a heat insulating section 28 (see FIG. 6) and a coupling section 30.

  The adapter body 22 is made of metal. The adapter body 22 includes steel steel or aluminum alloy. The adapter body 22 is preferably made of a material having low magnetic permeability. The adapter body 22 includes an inner peripheral portion 32 and an outer peripheral portion 34. The inner peripheral portion 32 includes a second spline 32A. The second spline 32A can be fitted with the first spline H3 provided on the hub H shown in FIG. One end portion 32B of the inner peripheral portion 32 in the axial direction contacts the protrusion H5 of the hub shell H1 in a state where the disc brake rotor 10 is attached to the hub H. The end surface of the one end 32B of the inner peripheral portion 32 in the axial direction is preferably formed so as to be included in a plane perpendicular to the axial direction. As shown in FIG. 1, the outer peripheral portion 34 is located radially outside the inner peripheral portion 32. The main body 12 of the disc brake rotor 10 is attached to the outer peripheral portion 34. The outer peripheral portion 34 includes a plurality of protruding portions 36 that protrude radially outward and to which the main body 12 of the disc brake rotor 10 is attached. The protrusions 36 are provided at predetermined intervals in the circumferential direction of the disc brake rotor 10. Hereinafter, the circumferential direction of the disc brake rotor 10 will be simply referred to as “circumferential direction”. The number of the protrusions 36 is 6, for example. As shown in FIG. 3, the protrusion 36 includes a first hole 36 </ b> A for mounting the main body 12 of the disc brake rotor 10. The first hole 36A extends in a direction parallel to the axial direction. The first hole 36A is formed at the tip of each protrusion 36. The first hole 36A preferably penetrates the protrusion 36 in the axial direction. The first hole 36A is formed at a position corresponding to the second hole 12B formed in the main body 12 of the disc brake rotor 10. The coupling portion 30 is inserted into the first hole 36A and the second hole 12B. The coupling part 30 includes, for example, a rivet. The coupling body 30 attaches the main body 12 of the disc brake rotor 10 and the adapter 20A to each other. The coupling part 30 may include a bolt. When the coupling portion 30 includes a bolt, for example, a screw that can be coupled to the bolt is formed on the inner peripheral portion of the second hole 12B, and the bolt is inserted into the second hole 12B. The main body 12 is sandwiched between and fixed to 36.

  The mounting unit 26 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 26 is provided between two protruding portions 36 that are adjacent to each other in the circumferential direction. As shown in FIG. 6, the mounting portion 26 is formed integrally with the adapter body 22. The mounting unit 26 has a holding unit 38 that holds the magnetic field generation unit 24. The holding portion 38 includes a recess 38A. The recess 38A opens in one side in the axial direction. The opening of the recess 38A is formed on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. In this case, the adapter body 22 is preferably made of a material having a low magnetic permeability such as an aluminum alloy. When the adapter body 22 is made of a material having a low magnetic permeability, the opening of the recess 38 </ b> A may be formed radially outside with the disc brake rotor 10 attached to the hub H. The opening of the recess 38A may be formed on the opposite side of the hub body H of the hub H from the second end H6 side when the adapter body 22 is attached to the hub H. When the adapter body 22 is made of a material having a high magnetic permeability, the opening of the recess 38A is located on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. Are preferably formed on opposite sides.

  The magnetic field generator 24 is housed in the recess 38A. Although it is preferable that the entire magnetic field generating portion 24 be housed in the recess 38A, part of the magnetic field generating portion 24 may protrude from the recess 38A. The magnetic field generator 24 includes at least one permanent magnet. The magnetic field generator 24 is provided between two adjacent protrusions 36. The shape of the permanent magnet is not limited, but is formed in a cylindrical shape, for example. The permanent magnet is provided in the recess 38A so that the magnetic poles are aligned in the axial direction. The magnetic field generator 24 is provided between two protrusions 36 adjacent to each other in the circumferential direction. The heat insulating section 28 is arranged between the magnetic field generating section 24 and the mounting section 26, and suppresses heat transfer. In one example, the heat insulating unit 28 includes resin. The heat insulating portion 28 is preferably made of a material having low magnetic permeability. The heat insulating section 28 and the magnetic field generating section 24 are held in the recess 38A by light press fitting or an adhesive. The magnetic field generator 24 may be molded with resin.

(Second embodiment)
The adapter 20B of the second embodiment will be described with reference to FIGS. 7 and 8. The adapter 20B of the second embodiment is the same as the adapter 20A of the first embodiment except that the mounting portion 42 is formed separately from the adapter body 22, so the configuration common to the first embodiment will be omitted. The same reference numerals as those in the first embodiment are given, and duplicate explanations are omitted.

  As shown in FIG. 7, the mounting portion 42 is provided between two adjacent protrusions 36. The mounting portion 42 is formed separately from the adapter body 22. The mounting unit 42 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 42 includes a holding portion 44 and an engaging portion 46. The holding portion 44 is made of metal or resin. The holding portion 44 is preferably made of a material having low magnetic permeability. The holding portion 44 includes a recess 44A. The recess 44A opens in one axial direction. The opening of the recess 44A is formed on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. The opening of the recess 44A may be formed on the opposite side of the hub shell H1 of the hub H from the second end H6 when the disc brake rotor 10 is attached to the hub H. When the holding portion 44 is made of a material having a high magnetic permeability, the opening of the recess 44A is located on the side opposite to the second end H6 of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. It is preferably formed. The engagement portion 46 engages with the adapter body 22. The engaging portion 46 includes, for example, an adhesive. The engagement portion 46 fixes the holding portion 44 to the outer peripheral portion 34. When the holding portion 44 is made of a material having a low magnetic permeability such as an aluminum alloy and a resin, the opening of the recess 44A may be formed inside or outside in the radial direction.

  As shown in FIG. 8, the magnetic field generator 24 is housed in the recess 44A. Although it is preferable that the entire magnetism generating portion 24 is housed in the recess 44A, a part of the magnetism generating portion 24 may protrude from the recess 44A. The transfer of heat between the adapter body 22 and the magnetic field generation unit 24 is suppressed by the holding unit 44 and the engagement unit 46. Therefore, in the adapter 20B of the second embodiment, since the mounting portion 42 functions as a heat insulating portion, the heat insulating portion 28 of the first embodiment can be omitted, but between the mounting portion 42 and the magnetic field generating portion 24. The heat insulating portion 28 may be provided in the.

(Third Embodiment)
The adapter 20C of the third embodiment will be described with reference to FIGS. 9 and 10. In the adapter 20C of the third embodiment, at least one of the coupling portions 30 is changed to the coupling portion 54, the magnetic field generation portion 24 is provided on the protrusion portion 36, and the mounting portion 48 is formed separately from the adapter body 22. The adapter 20A is the same as the adapter 20A of the first embodiment except for the above, and therefore, the same components as those of the first embodiment will be denoted by the same reference numerals as those of the first embodiment, and redundant description will be omitted.

  As shown in FIG. 9, the mounting portion 48 is provided on the protrusion 36. The mounting unit 48 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 48 is formed separately from the adapter body 22. The mounting portion 48 includes a holding portion 50. In one example, the mounting portion 48 further includes a connecting portion 54. The connecting portion 54, like the connecting portion 30, includes a rivet. The holding part 50 is formed of metal or resin. The holding portion 50 is provided on the second end portion H6 side of the hub shell H1 of the hub H with the disc brake rotor 10 attached to the hub H. The holding part 50 includes a recess 50A. The opening of the recess 50A is formed on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. A through hole 50B penetrating to the adapter body 22 side is formed at the bottom of the recess 50A. The magnetic field generator 24 and the connecting portion 54 are arranged at positions that overlap each other in the axial direction. In another example, the magnetic field generator 24 and the connecting portion 54 are arranged at positions that do not overlap each other in the axial direction. In this case, for example, the holding portion 50 extends inward in the radial direction, outside in the radial direction, or in the circumferential direction with respect to the connecting portion 54, and the recess 50 </ b> A is formed in a portion that does not overlap the connecting portion 54.

  The mounting portion 48 is inserted into the first hole 36A and fixed to the protruding portion 36. As shown in FIG. 10, the connecting portion 54 is inserted into the first hole 36 </ b> A and the second hole 12 </ b> B formed in the body 12 of the disc brake rotor 10 to connect the protrusion 36 and the body 12 of the disc brake rotor 10. To connect. The first end 54A of the connecting portion 54 is inserted into the through hole 50B and is located in the internal space of the recess 50A. The holding portion 50 is supported by sandwiching the holding portion 50 between the protruding portion 36 and a portion of the first end portion 54A disposed in the recess 50A internal space.

  The magnetic field generator 24 is housed in the recess 50A. Although it is preferable that the entire magnetism generating portion 24 be housed in the recess 50A, a part of the magnetism generating portion 24 may protrude from the recess 50A. The magnetic field generator 24 is provided on the protrusion 36. The heat insulating section 28 is arranged between the magnetic field generating section 24 and the mounting section 48, and suppresses heat transfer.

(Fourth Embodiment)
An adapter 20D of the fourth embodiment will be described with reference to FIGS. 11 and 12. The adapter 20D of the fourth embodiment is the same as the adapter 20A of the first embodiment except that the mounting portion 56 is fixed to the projecting portion 36, and the mounting portion 56 is formed separately from the adapter body 22. The same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and redundant description will be omitted.

  As shown in FIG. 11, the mounting portion 56 is provided on the protrusion 36. The mounting unit 56 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 56 is formed separately from the adapter body 22. The mounting portion 26 is configured to be attachable to and detachable from the adapter body 22. The mounting portion 56 includes a holding portion 58 and an engaging portion 60 (see FIG. 12). The holding portion 58 includes a recess 58A. The holding portion 58 is made of metal or resin. The holding portion 58 is provided on the second end H6 side of the hub shell H1 of the hub H with the disc brake rotor 10 attached to the hub H. The opening of the recess 58A is provided on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. In this case, the holding portion 58 is preferably made of a material having a low magnetic permeability such as an aluminum alloy and a resin. In another example, the holding portion 58 is provided on the opposite side of the hub shell H1 of the hub H from the second end H6 when the disc brake rotor 10 is attached to the hub H. The opening of the recess 58A is provided on the opposite side of the hub shell H1 of the hub H from the second end H6 when the disc brake rotor 10 is attached to the hub H. When the holding portion 58 is formed of a material having a low magnetic permeability such as an aluminum alloy and a resin, the opening of the recess 58A may be formed inside or outside in the radial direction or on one side or the other side in the circumferential direction. Good. The magnetic field generator 24 is housed in the recess 58A. Although it is preferable that the entire magnetism generating portion 24 be housed in the recess 58A, a part of the magnetism generating portion 24 may protrude from the recess 58A. The heat insulating section 28 is arranged between the magnetic field generating section 24 and the holding section 58 and suppresses heat transfer.

  As shown in FIG. 12, the engagement portion 60 includes a first screw portion 60A. The adapter body 22 includes a second screw portion 22B with which the first screw portion 60A engages. The first screw portion 60A includes a male screw. The second screw portion 22B includes a female screw. The second threaded portion 22B is formed radially inward of the first hole 36A of the protrusion 36. The screw hole of the second screw portion 22B extends parallel to the axial direction and opens to the second end portion H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. When the holding portion 58 is provided on the side opposite to the second end H6 of the hub shell H1, the screw hole of the second screw portion 22B opens on the side opposite to the second end H6 of the hub shell H1. The screw hole of the second screw portion 22B may extend in parallel to the axial direction and penetrate the protrusion 36. The engaging portion 60 may be formed integrally with the holding portion 58, or may be formed separately and attached to the holding portion 58. The magnetic field generator 24 can be attached to the adapter body 22 by screwing the first screw portion 60A into the second screw portion 22B. The screw hole of the second screw portion 22B may extend in a direction intersecting the axial direction.

(Fifth Embodiment)
The adapter 20E of the fifth embodiment will be described with reference to FIGS. 13 and 14. The adapter 20E of the fifth embodiment is the same as the adapter 20A of the first embodiment except that the mounting portion 62 is fixed to the projecting portion 36 and the mounting portion 62 is formed separately from the adapter body 22. The same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and redundant description will be omitted.

  As shown in FIG. 13, the mounting portion 62 is provided on the protruding portion 36. The mounting unit 62 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 62 is formed separately from the adapter body 22. The mounting portion 62 is configured to be detachable from the adapter body 22. The mounting portion 62 includes a holding portion 64 and an engaging portion 66 (see FIG. 14). The holding portion 64 includes a recess 64A. The holding portion 64 is made of metal or resin. The holding portion 64 is provided on the second end portion H6 side of the hub shell H1 of the hub H with the disc brake rotor 10 attached to the hub H. The opening of the recess 64A is provided on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. In this case, the holding portion 64 is preferably made of a material having a low magnetic permeability such as aluminum alloy and resin. In another example, the opening of the recess 64A is formed on the opposite side of the hub shell H1 of the hub H from the second end H6 when the disc brake rotor 10 is attached to the hub H. When the holding portion 64 is formed of a material having a low magnetic permeability such as aluminum alloy and resin, the opening of the recess 64A may be formed inside or outside in the radial direction, or on one side or the other side in the circumferential direction. Good. The holding portion 64 may be provided on the opposite side to the second end portion H6 of the hub shell H1 of the hub H in a state where the disc brake rotor 10 is attached to the hub H. The magnetic field generator 24 is housed in the recess 64A. Although it is preferable that the entire magnetism generating portion 24 be housed in the recess 64A, a part of the magnetism generating portion 24 may protrude from the recess 64A.

  As shown in FIG. 14, the engagement portion 66 includes two claw portions 66 </ b> A extending in the axial direction from the holding portion 64. One of the two claw portions 66A is inserted into the through hole 22C formed in the protruding portion 36. The other of the two claw portions 66A is arranged outside the projecting portion 36 in the circumferential direction. The holding portion 64 is fixed to the protruding portion 36 by the two claw portions 66A sandwiching the protruding portion 36. The engaging portion 66 and the claw portion 66A may be separately formed and assembled, or may be integrally formed.

  As shown in FIG. 15, the mounting portion 62 may include, instead of the engaging portion 66, an engaging portion 68 that forms a ring shape by connecting one end portion 68A and the other end portion 68B in the circumferential direction. The engaging portion 68 is fitted into the inner peripheral side of the engaging portion 68 with the one end portion 68A and the other end portion 68B being separated from each other, and the one end portion 68A and the other end portion 68B are connected to each other to hold the holding portion. 64 is fixed to the protrusion 36. The one end portion 68A and the other end portion 68B are formed with a concave portion and a convex portion that engage with each other.

(Sixth Embodiment)
The adapter 20F of the sixth embodiment will be described with reference to FIG. The adapter 20F of the sixth embodiment is the same as the adapter 20E of the fifth embodiment except that the holding portion 72 and the engaging portion 74 are separate bodies, so the configuration common to the fifth embodiment will be described below. The same reference numerals as in the fifth embodiment are given, and the duplicated description is omitted.

  The mounting portion 70 includes a holding portion 72 and an engaging portion 74. The mounting unit 70 mounts the magnetic field generation unit 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The holding portion 72 includes a first portion 76 and a second portion 78 which are arranged so as to sandwich the protruding portion 36. The first portion 76 is arranged on the second end H6 side of the hub shell H1 of the hub H of the protrusions 36 with the disc brake rotor 10 attached to the hub H. The first portion 76 includes a recess 76A. With the disc brake rotor 10 attached to the hub H, the second portion 78 is provided on the opposite side of the hub H from the second end H6 side of the hub shell H1. The opening of the recess 76A is provided on the second end H6 side of the hub shell H1 of the hub H when the disc brake rotor 10 is attached to the hub H. In this case, it is preferable that the first portion 76 be formed of a material having a low magnetic permeability such as an aluminum alloy and a resin. In another example, the opening of the first portion 76 and the recess 76A is provided on the side opposite to the second end H6 of the hub shell H1, and the second portion 78 is provided on the side of the second end H6 of the hub shell H1. When the holding portion 72 is formed of a material having a low magnetic permeability such as an aluminum alloy or a resin, the opening of the recessed portion 76A may be formed inside or outside in the radial direction, or on one side or the other side in the circumferential direction. Good. The magnetic field generator 24 is housed in the recess 76A. Although it is preferable that the entire magnetism generating portion 24 is housed in the recessed portion 76A, a part of the magnetism generating portion 24 may protrude from the recessed portion 64A. The heat insulating section 28 is arranged between the magnetic field generating section 24 and the mounting section 70, and suppresses heat transfer.

  The engaging portion 74 is formed separately from the holding portion 72. The engaging portion 74 includes a first screw portion 74A. The engaging portion 74 is formed by a bolt. The holding portion 72 includes a first through hole 76B through which the engaging portion 74 penetrates, and a third screw portion 78A that engages with the first screw portion 74A while the engaging portion 74 penetrates through the first through hole 76B. ,including. The first through hole 76B is formed in the first portion 76. The third screw portion 78A is formed on the second portion 78. The screw hole of the third screw portion 78A may penetrate the second portion 78. The mounting portion 70 includes a plurality of engaging portions 74. The first through holes 76B and the third screw portions 78A are formed in the holding portion 72 in correspondence with the number of the engaging portions 74. At least two of the engaging portions 74 are arranged at positions that sandwich the protruding portion 36 in the circumferential direction. In the mounting portion 70, the engagement portion 74 penetrates the first through hole 76B and the first screw portion 74A becomes the third screw portion 78A in a state where the protrusion 36 is sandwiched by the first portion 76 and the second portion 78. It is fixed to the protrusion 36 by being screwed.

  In the adapter 20F, with the disc brake rotor 10 attached to the hub H, the inner diameter of the end of the hub H of the first through hole 76B on the second end H6 side of the hub H1 is increased as shown in FIG. However, the end of the engaging portion 74 may not be projected from the first portion 76. Alternatively, the recessed portion 76A may be omitted from the first portion 76, and the magnetic field generator 24 and the heat insulating portion 28 may be provided on the surface of the first portion 76 opposite to the protrusion 36.

(Seventh embodiment)
The adapter 20G of the seventh embodiment will be described with reference to FIG. The adapter 20G of the seventh embodiment is the same as the adapter 20F of the sixth embodiment except that the first portion 76 and the second portion 78 of the holding portion 80 are connected, and thus the configuration common to the sixth embodiment. The same reference numerals as those in the sixth embodiment are used for the same, and redundant description will be omitted.

  The holding portion 80 includes a first portion 76, a second portion 78, and a third portion 82. The third portion 82 connects the ends of the first portion 76 and the second portion 78 in the circumferential direction. The third portion 82 extends in a direction parallel to the axial direction. The holding portion 80 has a U-shaped cross section in a direction perpendicular to the radial direction. The third portion 82 is arranged on one side of the protrusion 36 in the circumferential direction. The engaging portion 74 penetrates the first through hole 76B of the first portion 76 on the other side of the protruding portion 36 in the circumferential direction, and the first screw portion 74A is screwed into the third screw portion 78A.

  In the adapter 20G, with the disc brake rotor 10 attached to the hub H, the inner diameter of the end of the first through hole 76B on the second end H6 side of the hub shell H1 of the hub H is increased as shown in FIG. The end of the engaging portion 74 may not be projected from the first portion 76. Alternatively, the recessed portion 76A may be omitted from the first portion 76, and the magnetic field generator 24 and the heat insulating portion 28 may be provided on the surface of the first portion 76 opposite to the protrusion 36.

(Eighth Embodiment)
The adapter 20H of the eighth embodiment will be described with reference to FIG. The adapter 20H of the eighth embodiment is the same as the adapter 20A of the first embodiment except that the mounting portion 84 is fixed to the projecting portion 36, and the mounting portion 84 is formed separately from the adapter body 22. The same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and redundant description will be omitted.

  In the adapter 20H, the engaging portion 88 and the holding portion 86 are formed separately. The mounting portion 84 of the adapter 20H includes a holding portion 86 and an engaging portion 88. The mounting portion 84 mounts the magnetic field generator 24 on the adapter body 22 regardless of the fixing function of the fixing member R. The mounting portion 84 is provided on the protrusion 36. The engagement portion 88 includes a first screw portion 88A. The mounting portion 84 is configured to be detachable from the adapter body 22. The adapter body 22 includes a second through hole 22D through which the engaging portion 88 penetrates. The second through hole 22D extends in the axial direction. The holding portion 86 includes a fourth screw portion 86B that engages with the first screw portion 88A in a state where the engaging portion 88 penetrates the second through hole 22D.

  The holding portion 86 includes a recess 86A. The holding portion 86 is made of metal or resin. The holding portion 86 is provided on the second end H6 side of the hub shell H1 of the hub H in a state where the disc brake rotor 10 is attached to the hub H. The opening of the recess 86A is provided on the second end H6 side of the hub shell H1 of the hub H in a state where the disc brake rotor 10 is attached to the hub H. In this case, it is preferable that the holding portion 86 be formed of a material having a low magnetic permeability such as an aluminum alloy and a resin. In another example, the holding portion 86 is provided on the opposite side to the second end H6 side of the hub shell H1 of the hub H in a state where the disc brake rotor 10 is attached to the hub H. The opening of the recess 86A is provided on the opposite side of the hub H of the hub H from the second end H6 side when the disc brake rotor 10 is attached to the hub H. When the holding portion 86 is made of a material having a low magnetic permeability, the opening of the recess 86A may be formed on the inner side or outer side in the radial direction, or on one side or the other side in the circumferential direction. The magnetic field generator 24 is housed in the recess 86A. Although it is preferable that the entire magnetism generating portion 24 be housed in the recess 86A, a part of the magnetism generating portion 24 may protrude from the recess 86A. The heat insulating section 28 is arranged between the magnetic field generating section 24 and the holding section 86, and suppresses heat transfer.

  The first screw portion 88A includes a male screw. The fourth screw portion 86B includes a female screw. The engaging portion 88 penetrates the second through hole 22D from the opposite side of the holding portion 86 with the projecting portion 36 interposed therebetween in the axial direction, and the first screw portion 88A is screwed into the fourth screw portion 86B, so that the mounting portion 84 is formed. Are fixed to the protrusion 36. The engaging portion 88 is formed by a bolt. The protrusion 36 is sandwiched between the head portion of the bolt and the holding portion 86, and movement of the holding portion 86 in the axial direction is restricted.

(Modification)
The description of each of the above embodiments is an example of a form that the adapter of the disc brake rotor according to the present invention, the disc brake rotor including the adapter, and the magnetic field generator can take, and is not intended to limit the form. .. The adapter of the disc brake rotor according to the present invention, the disc brake rotor including the adapter, and the magnetic field generator are, for example, combinations of the above-described modifications of the above-described embodiments and at least two modifications that do not contradict each other. Can take the form described. In the following modified examples, the same parts as those of the embodiments are designated by the same reference numerals, and the description thereof will be omitted.

  -The mounting parts 62 and 70 of 5th-7th embodiment can also be attached to the adapter main body 22 of 1st-4th embodiment which does not include 22 C of through-holes. For example, as shown in FIG. 21, the mounting portion 62 is configured so as to surround an intermediate portion in the radial direction of the one protruding portion 36 of the adapter body 22.

  The mounting portion 84 shown in FIG. 20 may be changed to the mounting portion 90 including the annular base portion 92 shown in FIG. The inner diameter of the base portion 92 is larger than the inner diameter of the inner peripheral portion 32 of the adapter body 22 and the outer diameter of the fixing member R. The outer diameter of the base portion 92 is preferably selected such that the outer peripheral portion of the base portion 92 is arranged inside the coupling portion 30 in the radial direction. The base portion 92 is preferably fixed to the two or more protrusions 36 by the engaging portions 88 shown in FIG. The magnetic field generator 24 includes a plurality of permanent magnets 24A arranged at intervals in the circumferential direction of the base 92. The base portion 92 is provided with recesses 86A at intervals in the circumferential direction. The permanent magnet 24A is housed in each of the recesses 86A.

  The mounting portion 90 is not detachably fixed to the adapter main body 22 by the engaging portion 88, but can be detachably attached to the adapter main body 22 by the engaging portion 66 similar to that of the fifth embodiment, as shown in FIG. You may fix it. A plurality of claw portions 66A that project toward the adapter body 22 side in the axial direction are provided on the surface of the base portion 92 on the adapter body 22 side. A plurality of pairs of claw portions 66A are preferably provided. Each of the pair of claw portions 66A is configured to be able to be fitted into one projecting portion 36.

The magnetic field generating section 24 shown in FIG. 22 can be changed to a magnetic field generating section 94 including an annular permanent magnet 94B in which a plurality of magnetic poles are arranged in the circumferential direction as shown in FIG. In this case, the recess 86A of the base 92 is formed in an annular shape. When the base portion 92 of FIG. 23 is formed by including a magnetic material, the base portion 92 may be magnetized to form the magnetism generating portion 94.

  The mounting portion 26 of the adapter body 22 may be provided on the protrusion 36 as shown in FIGS. 25 and 26, instead of being provided between the two protrusions 36 that are adjacent to each other in the circumferential direction. The mounting portion 26 is formed integrally with the protruding portion 36.

-The heat insulating portion 28 may be omitted in the first and third to eighth embodiments and each modified example.
-The adapter main body 22 of each embodiment and each modification may be provided with a heat dissipation part. The heat dissipation part includes, for example, one or more fins. The heat dissipation section is preferably provided near the magnetic field generation section 24. For example, the heat dissipation portion is provided on the surface opposite to the surface on which the magnetic field generation portion 24 is provided in the axial direction, and at a position overlapping the magnetic field generation portion 24 when viewed in the axial direction.

  The holding portion 50 of the third embodiment is provided on the side opposite to the second end H6 of the hub shell H1 of the hub H with the disc brake rotor 10 attached to the hub H as shown in FIG. May be. The opening of the recess 50A is formed on the side of the hub H opposite to the second end H6 side of the hub shell H1 when the disc brake rotor 10 is attached to the hub H. The mounting portion 48 is inserted into the first hole 36A and fixed to the protruding portion 36. The second end 54B of the connecting portion 54 is inserted into the through hole 50B and is located in the internal space of the recess 50A. The holding portion 50 is supported by sandwiching the holding portion 50 between a portion of the second end portion 54B disposed in the inner space of the recess 50A and the protruding portion 36.

  The disc brake rotor 10 of each of the embodiments and the modifications may be changed to the disc brake rotor 10A of FIG. 28 in which the main body 12 and the adapters 20A to 20H are detachable. For example, the disc brake rotor 10A shown in FIG. 28 includes a plurality of through holes 102 in the main body 12. The through hole 102 is provided at a position corresponding to the first hole 36A (see FIG. 3). A first spacer S1 and a second spacer S2 are arranged between the fixing member R and the main body 12. The mounting portion 26 is formed integrally with the adapter body 22. In another example, the mounting portion 26 is formed separately from the adapter body 22 and is detachably attached to the adapter body 22.

The mounting portion 42 of the second embodiment may be modified to be provided on the first side surface 110A of the disc brake rotor 110. For example, the disc brake rotor 110 shown in FIG. 29 includes a hub connection portion 112, a main body 114, and an arm 116. The hub connecting portion 112 is for attaching to the bicycle hub H (see FIG. 2). The arm 116 connects the hub connecting portion 112 and the main body 114. The disc brake rotor 110 includes a plurality of arms 116. The combination of the hub connection portion 112 and the arm 116 includes the same structure as the adapters 20A to 20H of the above-described embodiment. The hub connecting portion 112 corresponds to the inner peripheral portion 32 of the adapters 20A to 20H of the above-described embodiment, and the arm 116 corresponds to the protruding portion 36 of the outer peripheral portion 34 of the above-described embodiment. The main body 114 is arranged radially outside the hub connecting portion 112. The disc brake rotor 110 includes a first side surface 110A and a second side surface 110B. The second side surface 110B is a surface closer to the second end H6 of the hub shell H1 of the hub H when the disc brake rotor 110 is attached to the hub H. The first side surface 110A is a surface opposite to the second side surface 110B in the axial direction. The main body 114 includes the same structure as the main body 12 of the disc brake rotor 10 of each of the above-described embodiments. In this modification, the hub connection portion 112 and the arm 116 may be formed integrally or separately. Further, the arm 116 and the main body 114 may be formed integrally or separately. As shown in FIG. 30, the magnetic field generator 120 can be attached to the disc brake rotor 110. The magnetic field generator 120 includes a magnetic field generator 24, a holder 124, and a third attachment part 126. The holder 124 holds the magnetic field generator 24. The magnetic field generator 24 is embedded in the holder 124. The third attachment portion 126 is formed integrally with the holding portion 124, and can be attached to the first side surface 110A of the disc brake rotor 110 in the axial direction. The holding portion 124 is formed of a material having low magnetic permeability, and includes, for example, resin. The third attachment portion 126 is attached to the first side surface 110A with, for example, a bolt or an adhesive. The third attachment portion 126 is attached to the main body 114 of the disc brake rotor 110.
In the holding portion 124, with the third attachment portion 126 attached to the first side surface 110A, at least a part of the magnetic field generation portion 24 is a space between the first side surface 110A and the adjacent arms 116 of the disc brake rotor 110. It is configured to project to 125. The third attachment portion 126 includes a first portion 126A and a second portion 126B. The first portion 126A is formed with a hole 127 in which an internal thread is provided on the inner peripheral portion. The second portion 126B is provided with the holding portion 124 at the end portion in the axial direction. The holding portion 124 projects in the axial direction from the third mounting portion 126. In the example shown in FIG. 29, with the third mounting portion 126 mounted on the disc brake rotor 110, the first portion 126A is arranged at the radially outer portion of the third mounting portion 126, and the radially inner portion is arranged. the second portion 126B is disposed in the portion.

  -The 3rd attachment part 126 of FIG. 30 may be attached to the adapter main body 22 among 110 A of 1st side surfaces. For example, the hole 127 of the third attachment portion 126 penetrates in the axial direction. The holding portion 124 is fixed to the disc brake rotor 110 by inserting the bolt B1 into the hole 127 and fixing the bolt B1 to the screw hole formed in the adapter body 22.

The mounting portion 42 of the second embodiment or the holding portion 124 shown in FIG. 29 may be attached to the disc brake rotor 10B shown in FIG. Disk brake rotor 10 B includes a plurality of first mounting portion 13A, and a second mounting portion 13B, a magnetism generating portion 24, and a holding portion 124. The plurality of first mounting portions 13A can be mounted to the hub H of the bicycle with bolts B. The first mounting portion 13A penetrates in the axial direction. A female screw into which the male screw of the bolt B is screwed is formed on the protrusion H5 (see FIG. 2) of the hub H. The first mounting portion 13A includes a through hole. The first mounting portion 13A is provided at a position corresponding to the female screw formed on the protrusion H5 of the hub H of the disc brake rotor 10A. The second mounting portion 13B is provided at a position different from that of the first mounting portion 13A. The second mounting portion 13B includes a through hole that penetrates in the axial direction. The holder 124 detachably attaches the magnetic field generator 24 to the second attachment portion 13B. The holding part 124 corresponds to a mounting part. A second spacer S2 is arranged between the head portion of the bolt B and the disc brake rotor 10A. The bolt B1 penetrates the second mounting portion 13B and is screwed into the female screw of the third mounting portion 126 of the holding portion 124, whereby the holding portion 124 is detachably attached to the disc brake rotor 10B. In the example shown in FIG. 31, with the third mounting portion 126 mounted on the disc brake rotor 110, the first portion 126A is arranged on the radially outer portion of the third mounting portion 126, and the inner portion in the radial direction is arranged. the second portion 126B is disposed in the portion.

  -The magnetic generation parts 24 and 94 of each embodiment can also be comprised so that an electromagnet may be included instead of or in addition to a permanent magnet. In this case, the magnetic field generators 24 and 94 may include a coil and a battery that supplies electric power to the coil. When the magnetic field generators 24 and 94 include electromagnets, a dynamo may be provided in the hub H and power may be supplied from the dynamo.

  -In 1st-5th Embodiment and a modified example, recessed part 38A, 44A, 50A, 58A, 64A, 86A is abbreviate | omitted and the magnetic generation part 24 and the heat insulation part 28 are hold | maintained part 38,44,50,58,64. , 86 can also be provided on the surface.

  -In each embodiment and modification, the magnetic generation parts 24 and 94 may be embedded in the holding parts 38, 44, 50, 58, 64, 72 and 86. In this case, for example, the holding portions 38, 44, 50, 58, 64, 72, 86 are formed of a resin material, and the magnetism generating portions 24, 94 and the holding portions 38, 44, 50, 58, 64, 72, 86 are formed. Mold integrally.

  In each of the embodiments and the modified examples, the magnetic field generator 24 is accommodated in the recesses 38A, 44A, 50A, 58A, 64A, 76A, 86A, and the recesses 38A, 44A, 50A, 58A, 64A, 76A, 86A. It may be covered with a cover member so as not to be exposed from the opening. The cover member is formed of a material having a low magnetic permeability, and includes, for example, resin or aluminum alloy. The cover member can be fixed to at least one of the adapter body 22 and the magnetic field generator 24 by adhesion, welding, welding, or screws.

  In each of the embodiments and modified examples, the mounting portions 26, 42, 48, 56, 62, 70, 84, 90 are provided between the body 12 of the disc brake rotor 10, 10A and the adapter body 22 or the disc brake rotor. It may be arranged between the hub connection 112 of the hub 110 and the hub H, or between the adapter body 22 and the first end H4 of the hub H. In this case, a groove or a step is formed on the surface of the adapter body 22 on the side of the hub H, and the mounting portions 26, 42, 48, 56, 62, 70, 84, 90 are fitted into the groove or the step, whereby the adapter body The magnetic field generators 24 and 94 are attached to 22.

  H ... Hub, H3 ... First spline, R ... Fixing member, 10, 10A, 10B, 110 ... Disc brake rotor, 12 ... Main body, 12B ... Second hole, 20A, 20B, 20C, 20D, 20E, 20F, 20G , 20H ... Adapter, 22 ... Adapter body, 22B ... Second screw part, 22D ... Second through hole, 32 ... Inner peripheral part, 32A ... Second spline, 34 ... Outer peripheral part, 36 ... Projection part, 36A ... First Holes, 24, 94 ... Magnetic generators, 24A, 94A ... Permanent magnets, 26, 42, 48, 56, 62, 70, 84, 90 ... Mounting parts, 38, 44, 50, 58, 64, 72, 80, 86,124 ... Retaining part, 46, 60, 66, 68, 74, 88 ... Engaging part, 28 ... Heat insulating part, 54 ... Connecting part, 60A, 74A, 88A ... First screw part, 76B ... First through hole , 78A ... Third screw part, 8 B ... The fourth screw portion, 92 ... base portion.

Claims (51)

An adapter main body including an inner peripheral portion attached to a bicycle hub and an outer peripheral portion to which a main body of a disc brake rotor is attached,
An adapter for a disc brake rotor, comprising: a mounting unit that detachably mounts a magnetic field generation unit to the adapter body, regardless of a fixing function of a fixing member that fixes the adapter body to the hub.   The adapter of the disc brake rotor according to claim 1, wherein the mounting portion includes a holding portion that holds the magnetic field generating portion.   The adapter of the disc brake rotor according to claim 2, wherein the holding portion includes one or a plurality of recesses in which at least a part of the magnetic field generating portion is arranged.   The adapter of the disc brake rotor according to claim 2, further comprising an engaging portion that engages the holding portion with the outer peripheral portion.   The disc brake rotor adapter according to claim 4, wherein the engaging portion includes a first screw portion.   The adapter for a disc brake rotor according to claim 5, wherein the outer peripheral portion includes a second screw portion that engages with the first screw portion. The outer peripheral portion further includes a second through hole through which the engaging portion passes,
The adapter for a disc brake rotor according to claim 4, wherein the holding portion further includes a fourth screw portion that engages with the engagement portion that is in a state of penetrating the second through hole.   The disc brake rotor according to any one of claims 1 to 7, wherein the outer peripheral portion includes a protrusion portion that protrudes outward in the radial direction of the disc brake rotor with respect to the inner peripheral portion and that the main body is attached. Adapter. An adapter main body including an inner peripheral portion attached to a bicycle hub and an outer peripheral portion to which a main body of a disc brake rotor is attached,
Irrespective of the fixing function of the fixing member that fixes the adapter body to the hub, a mounting portion that mounts the magnetic field generation portion to the adapter body,
The outer peripheral portion includes a plurality of protruding portions that protrude outward in the radial direction of the disc brake rotor with respect to the inner peripheral portion, and that the main body is attached to the outer peripheral portion,
The mounting portion is an adapter for a disc brake rotor, which is provided between two adjacent protrusions. An adapter main body including an inner peripheral portion attached to a bicycle hub and an outer peripheral portion to which a main body of a disc brake rotor is attached,
Irrespective of the fixing function of the fixing member that fixes the adapter body to the hub, a mounting portion that mounts the magnetic field generation portion to the adapter body,
The outer peripheral portion includes a protruding portion that protrudes outward in the radial direction of the disc brake rotor with respect to the inner peripheral portion, and the main body is attached to the outer peripheral portion,
The protrusion includes a first hole for attaching the main body,
The mounting portion is an adapter for a disc brake rotor, which is inserted into the first hole and fixed to the protrusion. The protrusion includes a first hole for attaching the main body,
The body includes a second hole,
11. The disc brake rotor according to claim 8, wherein the mounting portion includes a connecting portion that is inserted into the first hole and the second hole and that connects the protrusion and the main body. adapter.   The adapter of the disc brake rotor according to claim 2, wherein the holding portion includes an annular base portion.   The adapter of the disc brake rotor according to claim 12, wherein the base portion is configured to hold a plurality of the magnetic field generating portions at intervals in the circumferential direction of the base portion. The magnetism generating unit includes a ring-shaped permanent magnet in which a plurality of magnetic poles are arranged in the circumferential direction,
The disc brake rotor adapter according to claim 12, wherein the base portion is configured to hold the permanent magnet.   15. The disc brake rotor adapter according to claim 12, further comprising an engaging portion that engages the base portion with the outer peripheral portion.   The adapter of the disc brake rotor according to any one of claims 1 to 15, wherein the mounting portion is configured to be detachable from the adapter body.   The disc brake rotor adapter according to claim 1, wherein the mounting portion is configured integrally with the outer peripheral portion. The outer peripheral portion includes a main body attaching portion to which the main body is attached,
18. The disc brake rotor adapter according to claim 1, wherein the mounting portion is provided inside the main body mounting portion in a radial direction of the disc brake rotor. An adapter body including an inner peripheral portion attached to a bicycle hub and an outer peripheral portion to which a body of the disc brake rotor is attached;
Irrespective of the fixing function of the fixing member that fixes the adapter body to the hub, a mounting portion that mounts the magnetic field generation portion to the adapter body,
The magnetism generating unit is an adapter for a disc brake rotor, which includes an annular permanent magnet having a plurality of magnetic poles arranged in the circumferential direction. An adapter body including an inner periphery attached to a bicycle hub and an outer periphery to which a body of the disc brake rotor is attached;
The peripheral portion, seen including a mounting portion mounting portion for mounting a magnetic generator in the adapter body is mounted,
An adapter for a disc brake rotor, wherein the mounting portion is formed separately from the adapter body .   21. The disc brake rotor adapter according to claim 1, wherein the inner peripheral portion includes a second spline fitted to a first spline provided on the hub.   22. The disc brake rotor adapter according to any one of claims 1 to 21, wherein the adapter body contains steel or aluminum alloy.   23. The disc brake rotor adapter according to claim 1, wherein the magnetism generating unit includes at least one permanent magnet.   The disk brake rotor adapter according to any one of claims 1 to 23, further comprising a heat insulating section that is disposed between the mounting section and the magnetic field generating section and that suppresses heat transfer.   25. The disc brake rotor adapter according to claim 1, further comprising the magnetic field generator. An adapter for the disc brake rotor according to any one of claims 1 to 25,
A body of the disc brake rotor attached to the adapter. A plurality of first mounting portions mounted on the bicycle hub via bolts;
A second mounting portion provided at a position different from the first mounting portion;
A disc brake rotor, comprising: a mounting portion that detachably mounts the magnetic field generation portion on the second mounting portion.   28. The mounting part is configured to mount the magnetic field generating part on the second mounting part irrespective of a fixing function of the bolt for fixing the first mounting part to the hub. Disc brake rotor.   The disc brake rotor according to claim 27 or 28, wherein the second mounting portion includes a through hole through which an engaging portion that mounts the mounting portion to the second mounting portion passes.   30. The disc brake rotor according to claim 27, further comprising the magnetic field generator. A magnetic field generator provided in a disc brake rotor, comprising: a plurality of first attachment portions attached to a bicycle hub via bolts; and a second attachment portion provided at a position different from the first attachment portions. ,
A magnetic field generation device comprising: a mounting part that removably mounts the magnetic field generation part to the second mounting part.   A magnetic field generating device comprising a mounting part for removably mounting the magnetic field generating part to the disk brake rotor regardless of a fixing function of a fixing member for fixing the disk brake rotor to a bicycle hub. The disc brake rotor includes a main body and a connecting portion for attaching the main body to a bicycle hub.
33. The magnetic field generator according to claim 32, wherein the mounting section is configured so that the magnetic field generation section can be mounted to the main body or the connection section. A mounting portion that mounts the magnetic generation portion on the disc brake rotor so that at least a part of the magnetic generation portion is located at the opening of the disc brake rotor ;
The disc brake rotor includes a main body and an opening provided in the main body,
The magnetism generator, wherein the mounting portion is configured such that the magnetism generator is located in the opening of the main body . A mounting portion that mounts the magnetic generation portion on the disc brake rotor so that at least a part of the magnetic generation portion is located at the opening of the disc brake rotor ;
The disc brake rotor includes a main body, a connecting portion for attaching the main body to a bicycle hub, and an opening provided in the connecting portion,
The mounting unit is a magnetic field generator configured such that at least a part of the magnetic field generation unit is located in the opening of the connection unit . The connecting portion includes a hub connecting portion attached to the hub, and a plurality of arms connecting the hub connecting portion and the main body,
The opening includes a space formed between the arms that are adjacent to each other in the circumferential direction of the disc brake rotor,
The magnetic field generator according to claim 35 , wherein the mounting section is configured such that at least a part of the magnetic field generator is located in the space. The main body includes a second mounting portion,
The magnetic field generator according to any one of claims 33 to 36 , wherein the mounting portion includes a third mounting portion mounted on the second mounting portion. The main body includes a first side surface provided outside the main body in the axial direction of the disc brake rotor,
38. The magnetic field generator according to claim 37 , wherein the third attachment portion is configured to be arranged on the first side surface when attached to the second attachment portion. 39. The magnetic field generator according to claim 32 , wherein the mounting section includes a holding section that holds the magnetic field generating section. The connecting portion includes an inner peripheral portion having a second spline fitted to the first spline provided on the hub, and a protruding portion protruding outward in the radial direction of the disc brake rotor with respect to the inner peripheral portion. Having an outer peripheral portion to which the main body is attached,
The mounting portion includes a holding portion that holds the main body,
34. The magnetic field generator according to claim 33, wherein the sandwiching portion is configured to sandwich the protruding portion. The mounting portion includes one or a plurality of engaging portions,
The sandwiching portion includes a first portion and a second portion arranged so as to sandwich the protruding portion,
The magnetic generator of claim 40 , wherein the engagement portion is connected to the first portion and the second portion. The magnetic field generator according to claim 41 , wherein the engagement portion includes a bolt. The mounting portion includes a plurality of the engaging portions,
The magnetic generator according to claim 41 or 42 , wherein at least two of the plurality of engaging portions are arranged so as to sandwich the protruding portion in the circumferential direction of the disc brake rotor. The engagement portion includes a first screw portion,
The first portion includes a first through hole through which the engaging portion passes,
The magnetic field generator according to any one of claims 41 to 43 , wherein the second portion includes a third screw part that engages with the first screw part. The magnetic field generator according to any one of claims 41 to 44 , wherein the first portion is configured to hold the magnetic field generator. 46. The magnetism generator according to claim 45 , wherein the first portion includes a recess that can accommodate at least a part of the magnetism generator. The said 1st part is a magnetic generator of any one of Claims 41-46 formed of an aluminum alloy or resin. The magnetic generator according to any one of claims 31 to 47 , further including a magnetic generator. A magnetic generator provided in a disc brake rotor,
A magnetism generator including a magnetism generator having an annular permanent magnet in which a plurality of magnetic poles are arranged in the circumferential direction. An adapter for a disc brake rotor, comprising the magnetic generator according to any one of claims 31 to 49 . An adapter for the disc brake rotor according to claim 50 ,
A body of the disc brake rotor attached to the adapter.

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