WO2012056938A1 - ディスクロータ - Google Patents
ディスクロータ Download PDFInfo
- Publication number
- WO2012056938A1 WO2012056938A1 PCT/JP2011/073887 JP2011073887W WO2012056938A1 WO 2012056938 A1 WO2012056938 A1 WO 2012056938A1 JP 2011073887 W JP2011073887 W JP 2011073887W WO 2012056938 A1 WO2012056938 A1 WO 2012056938A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- holes
- hole
- disk rotor
- friction material
- Prior art date
Links
- 239000002783 friction material Substances 0.000 claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000005562 fading Methods 0.000 abstract 1
- 238000005979 thermal decomposition reaction Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/127—Discs; Drums for disc brakes characterised by properties of the disc surface; Discs lined with friction material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
- F16D2065/1328—Structure internal cavities, e.g. cooling channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
- F16D2065/1332—Structure external ribs, e.g. for cooling or reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/003—Chip removing
Definitions
- the present invention relates to a disk rotor of a disk brake device employed for braking a wheel in a vehicle, for example.
- disk rotor As one of this type of disk rotor, there is a disk rotor in which a plurality of circular non-through holes (dimples) are provided on an annular pressure contact surface to which a friction material of a brake pad is pressed during braking. 1.
- the present invention has been made to solve the above-described problem, and is a disc rotor in which a plurality of circular non-through holes are provided on an annular pressure contact surface to which a friction material of a brake pad is pressed during braking.
- the disc rotor (the disc rotor according to the first aspect of the present invention) is characterized in that the center of each non-through hole is disposed at a different position in the rotor radial direction.
- this disk rotor (the disk rotor of the invention according to claim 1), since the centers of the respective non-through holes are arranged at different positions in the rotor radial direction, a plurality of times each time the disk rotor makes one rotation.
- the center of each non-through hole does not slidably contact the same portion of the friction material in the brake pad, and the amount of wear of the friction material can be reduced as compared with the conventional case.
- the non-through holes may be arranged at predetermined intervals in the rotor circumferential direction (the invention according to claim 2).
- the non-through holes can be disposed in the entire circumferential direction of the rotor. It is possible to set so that the friction material comes into pressure contact with at least one non-through hole. Therefore, it is possible to effectively suppress the fade phenomenon caused by the pyrolysis gas in any rotational state of the disk rotor.
- the rotation trajectories of the non-through holes may partially overlap each other (the invention according to claim 3), and the rotor radial direction of the overlap It is also possible that the amount of overlap is smaller than the radius of each non-through hole (the invention according to claim 4). In these cases, by appropriately setting the size (hole diameter) and number of each non-through hole, the non-through hole is formed on the entire surface of the friction material in the brake pad each time the disk rotor rotates once.
- FIG. 1 is a front view showing an embodiment of a disk rotor according to the present invention.
- FIG. 2 is a cross-sectional view taken along line AA of the disk rotor shown in FIG.
- FIG. 3 shows that all the non-through holes shown in FIG. 1 are moved in the rotor circumferential direction to match the rotor radial direction of one non-through hole (for example, the non-through hole provided on the outermost periphery of the annular pressure contact surface).
- It is a virtual diagram arranged in a straight line in the rotor radial direction.
- FIG. 4 is an enlarged view of a portion of the non-through hole (non-through hole shown in cross section) shown in FIG.
- FIG. 5 is a virtual view corresponding to FIG.
- FIG. 3 showing another embodiment of the disk rotor according to the present invention (embodiment in which non-through holes arranged linearly in the rotor radial direction are in contact).
- FIG. 6 is a virtual view corresponding to FIG. 3 showing another embodiment of the disk rotor according to the present invention (embodiment in which the non-through holes arranged linearly in the rotor radial direction are separated by a predetermined amount).
- a disc rotor 10 of this embodiment is a disc rotor of a disc brake device employed for braking a wheel in a vehicle.
- the disk rotor 10 is formed of, for example, cast iron (iron-based metal material), and includes an annular sliding portion 11 and a hat portion 12 provided integrally with an inner peripheral portion of the sliding portion 11. Yes.
- the sliding portion 11 has an annular braking portion 11a that is sandwiched by a pair of front and back friction pads 20 (see phantom lines in FIG. 1) as is well known during braking. Yes.
- the braking portion 11a has a large number of ventilation passages 11a1 therein. Each ventilation passage 11a1 is formed to allow air to flow from the outer peripheral end portion to the inner peripheral end portion when the disc rotor 10 is rotated forward (at the time of forward rotation of the vehicle).
- the hat portion 12 has an annular inward flange portion 12a fixed to a wheel hub (not shown).
- five attachment holes 12a1 for attachment to a wheel hub (not shown) are formed at equal intervals in the rotor circumferential direction.
- two service screw holes 12a2 are formed in the inward flange portion 12a at equal intervals in the circumferential direction of the rotor, and the disc rotor 10 and the wheel hub (not shown) after use are interposed between them.
- a bolt having the same size as that of the service screw hole 12a2 can be screwed in and the disk rotor 10 can be pulled off from the wheel hub (not shown).
- non-through holes 11a2 are provided on the annular pressure contact surfaces S on both the front and back sides where the friction material 21 of the brake pad 20 is pressed in braking in the braking portion 11a of the sliding portion 11. Yes.
- the non-through holes 11 a 2 are arranged at predetermined intervals (may be equal intervals or unequal intervals) in the circumferential direction of the rotor.
- at least two (three in the state of FIG. 1) non-through holes 11 a 2 are provided so as to overlap the friction material 21.
- each non-through-hole 11a2 is arrange
- the centers of the non-through holes 11a2 are arranged at different positions in the rotor radial direction.
- the rotation trajectories of the non-through holes 11a2 overlap each other by a predetermined amount (partially).
- the overlap amount r1 in the rotor radial direction of the overlap in the rotation trajectory of each non-through hole 11a2 is set to be smaller than the radius ro of each non-through hole 11a2.
- FIG. 3 is a non-through hole provided at the outermost periphery of the annular pressure contact surface S, and each non-through hole 11a2 shown at the left end of FIG. In FIG. 3, 28 non-through holes 11a2 are linearly arranged in the rotor radial direction without gaps.
- each non-through hole 11a2 is formed in the casting process of the disk rotor 10, and as shown in FIG. 4, the bottom is spherical and the end on the opening side is considered for die cutting. And tapered.
- the volume (hole diameter, hole depth) of each non-through hole 11a2 is set in consideration of the amount of pyrolysis gas generated by the friction material 21 of the brake pad 20 due to frictional heat during braking, The pyrolysis gas can be accommodated sufficiently and sufficiently.
- a plurality of circular non-through holes 11a2 are provided in the portion where the friction material 21 of the brake pad 20 presses the annular pressure contact surface S during braking.
- the pyrolysis gas generated from the friction material 21 of the brake pad 20 by the frictional heat at the time of braking can be released to each non-through hole 11a2 of the disc rotor 10, and the fade phenomenon due to the pyrolysis gas can be suppressed. is there.
- the centers of the non-through holes 11a2 are disposed at different positions in the rotor radial direction, a plurality of non-through holes are provided each time the disk rotor 10 makes one rotation.
- the center of the hole 11a2 does not slidably contact the same portion of the friction material 21 in the brake pad 20, and the wear amount of the friction material 21 can be reduced as compared with the conventional case.
- the non-through holes 11a2 are arranged in the entire rotor circumferential direction.
- the friction material 21 of the brake pad 20 is pressed against the at least two non-through holes 11a2 in any rotation state of the disk rotor 10. Therefore, it is possible to effectively suppress the fade phenomenon caused by the pyrolysis gas in any rotational state of the disk rotor 10.
- the centers of the 28 non-through holes 11a2 are arranged at different positions in the rotor radial direction, and the rotor of the annular pressure contact surface S as shown in FIG. It is provided in the entire radial direction. Further, the rotation trajectories of the non-through holes 11a2 overlap each other by a predetermined amount, and the overlapping amount r1 of the overlap in the rotor radial direction is set smaller than the radius ro of each non-through hole 11a2.
- the non-through holes 11a2 are in sliding contact with the entire surface of the friction material 21 in the brake pad 20 at least once, and the non-through holes 11a2 are in sliding contact with the friction material 21.
- Wear amount of the friction material 21 caused by the above (the amount of protrusion of the friction material 21 into the non-through hole 11a2 is larger at the central portion of the non-through hole 11a2 than the inner and outer peripheral portions of the non-through hole 11a2 in the rotor radial direction).
- the friction material 21 has a large amount of wear) in the radial direction of the rotor, and it is possible to reduce the wear amount of the friction material 21 while reducing the wear of the friction material 21 on the brake pad 20. It is possible to suppress.
- the annular pressure contact surface S of the disk rotor 10 is provided with 28 non-through holes 11a2.
- the number of the non-through holes 11a2 can be appropriately increased and decreased, and is limited to the number of the above embodiments. Is not to be done.
- each non-through hole 11a2 is arranged on the entire annular pressure contact surface S in the rotor circumferential direction.
- a part of the annular pressure contact surface in the rotor circumferential direction for example, half of the entire circumference or It is also possible to arrange each non-through hole at 1/4) of the entire circumference.
- the rotation trajectories of the non-through holes 11a are configured to overlap each other by a predetermined amount.
- FIG. 5 or FIG. it is also possible to configure and implement so that the rotation trajectories of the non-through holes 11a do not overlap.
- the rotation trajectory of each non-through hole 11a is configured to contact in the rotor radial direction.
- the rotation trajectory of each non-through hole 11a is configured to be separated by a predetermined amount in the rotor radial direction.
- the ventilation passage 11a1 is provided between the front and back sides of the disk rotor 10, the disk rotor 10 is relatively thick, and the disk rotor 10 is used for a four-wheeled vehicle. Therefore, the arrangement of the non-through holes 11a2 on both the front and back sides is arbitrarily (can be changed as appropriate). For example, like the disc rotor used for a two-wheeled vehicle, the front and back sides of the disc rotor are used. In the case where the air passage (11a1) is not provided between both sides and the disk rotor has a relatively thin plate thickness, the arrangement of the non-through holes (11a2) on both the front and back sides is considered from the viewpoint of securing the strength.
- each non-through hole 11a2 can be appropriately set according to the number of non-through holes 11a2, the amount of pyrolysis gas generated during braking, and the like.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims (4)
- 制動時にブレーキパッドの摩擦材が圧接する環状圧接面に、円形の非貫通穴が複数個設けられているディスクロータであり、
前記各非貫通穴の中心がロータ径方向にて異なる位置に配設されているディスクロータ。 - 請求項1に記載のディスクロータにおいて、
前記各非貫通穴はロータ周方向にて所定の間隔で配置されていることを特徴とするディスクロータ。 - 請求項1または2に記載のディスクロータにおいて、
前記各非貫通穴の回転軌跡は、互いに部分的にオーバーラップしていることを特徴とするディスクロータ。 - 請求項3に記載のディスクロータにおいて、
前記オーバーラップのロータ径方向の重複量は、前記各非貫通穴の半径より小さいことを特徴とするディスクロータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011103596T DE112011103596T5 (de) | 2010-10-28 | 2011-10-18 | Scheibenrotor |
CN2011800438237A CN103097758A (zh) | 2010-10-28 | 2011-10-18 | 盘形转子 |
US13/822,947 US20130175126A1 (en) | 2010-10-28 | 2011-10-18 | Disc rotor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-241922 | 2010-10-28 | ||
JP2010241922A JP5516328B2 (ja) | 2010-10-28 | 2010-10-28 | ディスクロータ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012056938A1 true WO2012056938A1 (ja) | 2012-05-03 |
Family
ID=45993652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/073887 WO2012056938A1 (ja) | 2010-10-28 | 2011-10-18 | ディスクロータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130175126A1 (ja) |
JP (1) | JP5516328B2 (ja) |
CN (1) | CN103097758A (ja) |
DE (1) | DE112011103596T5 (ja) |
WO (1) | WO2012056938A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2022107785A1 (ja) * | 2020-11-18 | 2022-05-27 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894646A (ja) * | 1981-12-01 | 1983-06-04 | Nissan Motor Co Ltd | デイスクブレ−キロ−タ |
JPH0221345U (ja) * | 1988-07-27 | 1990-02-13 | ||
JP2000104765A (ja) * | 1998-09-30 | 2000-04-11 | Mitsubishi Heavy Ind Ltd | ブレーキまたはクラッチシステム |
JP2007170665A (ja) * | 2005-12-23 | 2007-07-05 | Brembo Ceramic Brake Systems Spa | ディスクブレーキ用ディスク |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027856B2 (ja) * | 1979-06-06 | 1985-07-01 | ヤマハ発動機株式会社 | デイスクブレ−キ |
KR20030076959A (ko) * | 2003-09-03 | 2003-09-29 | 노재원 | 자동차의디스크드럼 |
WO2005040631A1 (ja) * | 2003-10-23 | 2005-05-06 | Yamaha Hatsukoki Kabushiki Kaisha | ブレーキディスク |
US20070181390A1 (en) * | 2006-02-08 | 2007-08-09 | Kevin Korm | Air-cooled brake rotor system |
CN200946640Y (zh) * | 2006-03-02 | 2007-09-12 | 吴思德 | 筋端有散热孔的制动盘 |
JP2010106916A (ja) * | 2008-10-29 | 2010-05-13 | Advics Co Ltd | ディスクロータ |
ES2772136T3 (es) * | 2010-06-11 | 2020-07-07 | Sunstar Engineering Inc | Disco de freno |
US20120255820A1 (en) * | 2011-03-01 | 2012-10-11 | Mccord Geoffrey K | Segmented brake rotor with externally vented carrier |
-
2010
- 2010-10-28 JP JP2010241922A patent/JP5516328B2/ja not_active Expired - Fee Related
-
2011
- 2011-10-18 US US13/822,947 patent/US20130175126A1/en not_active Abandoned
- 2011-10-18 DE DE112011103596T patent/DE112011103596T5/de not_active Withdrawn
- 2011-10-18 WO PCT/JP2011/073887 patent/WO2012056938A1/ja active Application Filing
- 2011-10-18 CN CN2011800438237A patent/CN103097758A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894646A (ja) * | 1981-12-01 | 1983-06-04 | Nissan Motor Co Ltd | デイスクブレ−キロ−タ |
JPH0221345U (ja) * | 1988-07-27 | 1990-02-13 | ||
JP2000104765A (ja) * | 1998-09-30 | 2000-04-11 | Mitsubishi Heavy Ind Ltd | ブレーキまたはクラッチシステム |
JP2007170665A (ja) * | 2005-12-23 | 2007-07-05 | Brembo Ceramic Brake Systems Spa | ディスクブレーキ用ディスク |
Also Published As
Publication number | Publication date |
---|---|
JP2012092926A (ja) | 2012-05-17 |
US20130175126A1 (en) | 2013-07-11 |
DE112011103596T5 (de) | 2013-08-29 |
JP5516328B2 (ja) | 2014-06-11 |
CN103097758A (zh) | 2013-05-08 |
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