WO2004106091A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2004106091A1 WO2004106091A1 PCT/JP2004/007187 JP2004007187W WO2004106091A1 WO 2004106091 A1 WO2004106091 A1 WO 2004106091A1 JP 2004007187 W JP2004007187 W JP 2004007187W WO 2004106091 A1 WO2004106091 A1 WO 2004106091A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- groove
- tire
- circumferential
- grooves
- circumferential direction
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
- B60C11/1384—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block corners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
- B60C11/1315—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls having variable inclination angles, e.g. warped groove walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
- B60C11/1323—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls asymmetric
Definitions
- the present invention relates to a pneumatic tire, and more particularly to a pneumatic tire excellent in drainage on wet road surfaces, uneven wear resistance on dry road surfaces, and steering stability.
- Japanese Patent Application Laid-Open No. 1-204805 discloses that at least one pair of circumferential main grooves, a plurality of lateral main grooves, a circumferential main groove and a lateral main groove are defined. And a land portion having a sharp corner and an obtuse corner, and the side wall of the land has a substantially maximum inclination angle from an obtuse corner having a substantially minimum inclination angle with respect to a normal direction at this position.
- the block stiffness between the sharp corners and the obtuse corners is made uniform, uneven wear is suppressed, and the groove bottom width is made smooth and continuous.
- Japanese Patent Application Laid-Open No. 3-213405 has a directional pattern consisting of a zigzag circumferential groove and a lateral groove extending from the tread end toward the tire equator, and the groove bottom of the circumferential groove extends in the tire circumferential direction.
- the tire is described as being approximately parallel to the tire and having improved uneven wear resistance while maintaining drainage.
- this tire has a configuration in which the groove bottom extends along the tire circumferential direction. Therefore, the water flowing through the bottom of the groove and the water flowing through the lateral groove collide at the intersection of the grooves, causing turbulence, and sufficient drainage cannot be obtained immediately.
- Japanese Patent Application Laid-Open No. Hei 2-241805 discloses a method of providing a block land portion in a shoulder portion, and making an angle of a side wall of the block land portion with respect to a tire equatorial plane different between a stepping side and a kicking side. Tires with improved wear and handling stability are described. However, in this tire, since the cross-sectional area of the circumferential groove in the tire width direction changes greatly along the tire circumferential direction, water flowing in the circumferential groove easily generates turbulent flow.
- an object of the present invention is to optimize a tread pattern to provide a pneumatic tire excellent in drainage on wet road surfaces, uneven wear resistance on dry road surfaces and steering stability. To provide.
- the present invention provides at least one pair of circumferential grooves extending in the tire circumferential direction in a tread portion, and among these circumferential grooves, the tire width direction is the largest.
- An innermost land portion and an outer land portion are separated by the arrangement of outermost circumferential grooves which are outer circumferential grooves, and a plurality of transverse grooves extending at least in the outer land portion at an angle to the tire circumferential direction.
- the outermost circumferential groove has both opening edges extending along the tire circumferential direction and the groove bottom.
- the width of the groove bottom which is narrower than the opening width, extends obliquely with respect to the tire circumferential direction such that the bottom of the groove is substantially continuous between the adjacent transverse grooves and the transverse groove disposed on the outer land portion. It has a zigzag shape, with openings on both inner and outer groove walls Inclined at connection constant angle suited to edge forces the groove bottom, and a pneumatic tire characterized by having a cut edge that chamfer width is gradually increased toward the opposite circumferential direction.
- the angular force formed between the inner chamfered portion and the surface including the tire circumferential direction is preferably in the range of 15 to 80 ° as measured from the acute angle side.
- the angular force between the outer chamfered portion and the surface including the tire circumferential direction is measured from the acute angle side. It is preferably in the range of 5-80 °.
- the inner edge of the groove bottom located between the adjacent transverse grooves of the outermost circumferential groove has an angle formed with a surface including the tire circumferential direction, measured from the acute angle side on the inner land portion side. It is preferably in the range of 5-45 °.
- the outer edge of the bottom of the outermost circumferential groove located between the adjacent transverse grooves has an angle formed with a surface including the tire circumferential direction from the acute angle side on the outer land portion side. Therefore, it is preferable to be within the range of 545 °.
- the chamfered surfaces of the inner and outer chamfers preferably have a substantially triangular planar shape.
- the circumferential groove includes a pair of outermost circumferential grooves located across the tire equatorial plane, and a groove bottom located between adjacent transverse grooves of the outermost circumferential grooves forming the pair. And a transverse groove extending to the tread end so as to communicate with each of them, so that they are arranged so as to sequentially enter the contact area from the tire equator side to the tread end side when the tire load rolls. Is preferred.
- FIG. 1 is a development view of a main portion of a tread portion of a typical pneumatic tire according to the present invention.
- FIGS. 2 (a), (b) and (c) are cross-sectional views taken along lines AA, BB and C-C of FIG. 1, respectively.
- FIG. 3 is a development view of a main portion of a tread portion of another tire according to the present invention.
- FIG. 4 is a development view of a main portion of a tread portion of still another tire according to the present invention.
- FIG. 5 is a development view of a main portion of a tread portion of a conventional tire.
- FIG. 6 is a development view of a principal part of a tread portion of the tire of Comparative Example 1.
- Fig. 1 shows a part of a development view of a tread portion of a typical pneumatic tire (hereinafter, referred to as "tire") according to the present invention
- Figs. 2 (a), (b) and ( c) is the A-A line, B-B line and C-C in Fig. 1, respectively. It is sectional drawing on a line.
- the tire shown in FIG. 1 has at least one pair of circumferential grooves 2, 2a, 2a ′ extending in the tire circumferential direction in the tread portion 1, and two pairs of circumferential grooves 2, 2a, 2a ′ in FIG.
- the inner land portion 3 and the outer land portion 4 are distinguished by arranging the outermost circumferential grooves 2a and 2a ', which are circumferential grooves positioned outermost in the tire width direction among 2, 2a and 2a.
- At least the outer land portion 4 is provided with a plurality of transverse grooves 5 extending inclining with respect to the tire circumferential direction, and the outer land portion 4 is partitioned into a large number of blocks by the transverse grooves 5.
- the main feature of the configuration of the present invention is to optimize the outermost circumferential grooves 2a and 2a '. Specifically, the outermost circumferential grooves 2a and 2a' The opening edges 9a, 9b extend along the tire circumferential direction, the width w of the groove bottom 6 is smaller than the opening width w, and the groove bottom 6 is adjacent to the transverse groove 5a.
- the inventor studied to improve drainage on a wet road surface while securing land portion rigidity. As a result, if both opening edges of the circumferential groove are arranged along the tire circumferential direction and the width of the groove bottom is made narrower than the opening width, the volume of land area is reduced while reducing the drainage reduction rate. To increase the rigidity of the land. Further, the groove bottom of the circumferential groove extends obliquely with respect to the tire circumferential direction so as to be substantially continuous with the transverse groove arranged on the outer land portion between the transverse grooves adjacent to each other, and has a zigzag shape as a whole groove bottom.
- the inner and outer groove walls which are both groove walls, have chamfers that are inclined at a constant angle toward the opening edge force and the groove bottom and that gradually increase in the circumferential direction where the chamfer widths are opposite. This can effectively increase the width of the circumferential groove opening while suppressing the occurrence of small corners, which can reduce the uneven wear resistance of the land, and reduce the water existing on the tread contact surface.
- the angle ⁇ between the inner chamfered portion 10 and the surface P including the tire circumferential direction is in the range of 15 to 80 ° as measured from the acute angle side. ⁇ If the force is less than 15 °,
- the angle between the outer chamfered portion 11 and the surface P including the tire circumferential direction is measured from the acute angle side.
- the outer chamfered part 11 has a transverse groove 5a extending from the outermost circumferential groove 2a to the outer land part 4a. This is because the flow of water flowing through the water is obstructed.
- the inner edge 15 of the groove bottom 12 located between the adjacent transverse grooves 5a and 5b of the outermost circumferential groove 2a is measured from the acute angle side with the plane P including the tire circumferential direction. Then 5 45 °
- the outer edge 16 of the groove bottom 12 located between the transverse grooves 5a and 5b, which are in contact with the P, of the outermost circumferential groove 2a is formed with the surface P including the tire circumferential direction. From the acute side
- the chamfered surfaces 13 and 14 of the inner and outer chamfers 10 and 11 preferably have a substantially triangular planar shape.
- the substantially triangular planar shape is used to prevent the water flow near the groove bottom 12 from being hindered by the land and becoming turbulent.
- the groove bottoms 12, 12 located between the adjacent transverse grooves 5a and 5b, 5a ', and 5 of the pair of outermost circumferential grooves 2a, 2a' located across the tire equatorial plane, respectively.
- FIG. 1 shows a mode in which the angle between the groove bottom 12 and the plane P including the tire circumferential direction is the same, and as shown in FIG.
- the inner land 3 As shown in FIG. 4, the inner land portion 3 may be a rib-shaped land portion extending substantially continuously in the tire circumferential direction. .
- the tires of Examples 1 and 2 have the tread patterns shown in FIGS. 1 and 4, respectively, are radial tires for passenger cars having a tire size of 205 / 55R16, have a tread width of 140 mm, and have an outermost circumferential direction.
- the depth of the groove is 8mm and has the specifications shown in Table 1.
- the tire size, tread width, and groove depth of the outermost circumferential groove were the same as those in Examples 1 and 2, and had the specifications shown in Table 1, and the tread pattern shown in FIG. Tire (conventional example), a tire having a tread pattern shown in FIG. 6 (Comparative Example 1), and a force S having a tread pattern shown in FIG. 1, a line A—A, a line B—B, and a line C in FIG.
- a prototype tire (Comparative Example 2) having cross sections along the line C shown in FIGS. 7A to 7C, respectively, was also manufactured.
- Each of the test tires was mounted on a standard rim (6 1 / 2JJ) specified by JATMA to form a tire wheel.
- the bottom of the outermost circumferential groove was Mounted on a front-wheel-drive car such that the tires enter the contact area in order from the equator side to the tread edge side when rolling, air pressure: 220 kPa (relative pressure), tire load: equivalent to two passengers in the front seat.
- the vehicle was cornered on a wet road surface with a radius of 80 m and a depth of 6 mm, and the critical lateral G at which the hydroplaning phenomenon occurred was measured.
- Table 1 shows the evaluation results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/558,618 US7527082B2 (en) | 2003-05-28 | 2004-05-26 | Pneumatic tire with outermost circumferential grooves having zigzag bottoms |
EP04745339A EP1637357B1 (en) | 2003-05-28 | 2004-05-26 | Pneumatic tire |
DE602004028018T DE602004028018D1 (de) | 2003-05-28 | 2004-05-26 | Luftreifen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-150587 | 2003-05-28 | ||
JP2003150587A JP4420623B2 (ja) | 2003-05-28 | 2003-05-28 | 空気入りタイヤ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004106091A1 true WO2004106091A1 (ja) | 2004-12-09 |
Family
ID=33487184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007187 WO2004106091A1 (ja) | 2003-05-28 | 2004-05-26 | 空気入りタイヤ |
Country Status (6)
Country | Link |
---|---|
US (1) | US7527082B2 (ja) |
EP (1) | EP1637357B1 (ja) |
JP (1) | JP4420623B2 (ja) |
CN (1) | CN100562437C (ja) |
DE (1) | DE602004028018D1 (ja) |
WO (1) | WO2004106091A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9079459B2 (en) * | 2007-02-07 | 2015-07-14 | Bridgestone Firestone North American Tire, Llc | Tire with tread including rib having chamfered surface |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50310704D1 (de) * | 2003-08-09 | 2008-12-11 | Continental Ag | Laufflächenprofil eines Fahrzeugluftreifens |
JP4276614B2 (ja) * | 2004-11-25 | 2009-06-10 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US7290578B2 (en) * | 2004-12-30 | 2007-11-06 | The Goodyear Tire & Rubber Company | Tire tread having a tread block with an undercut design |
JP4927461B2 (ja) * | 2006-07-06 | 2012-05-09 | 株式会社ブリヂストン | 空気入りタイヤ |
DE102007026813A1 (de) * | 2007-06-06 | 2008-12-11 | Continental Aktiengesellschaft | Fahrzeugluftreifen |
US20090095422A1 (en) * | 2007-09-06 | 2009-04-16 | Hitachi Kokusai Electric Inc. | Semiconductor manufacturing apparatus and substrate processing method |
US8752599B2 (en) * | 2007-11-02 | 2014-06-17 | Bridgestone Corporation | Pneumatic radial tire |
FR2935296B1 (fr) | 2008-08-26 | 2011-07-29 | Michelin Soc Tech | Bande de roulement de pneu a sculpture directionnelle. |
DE102008037498B4 (de) * | 2008-10-30 | 2013-07-18 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
JP4996661B2 (ja) * | 2009-10-15 | 2012-08-08 | 住友ゴム工業株式会社 | 空気入りタイヤ |
WO2011062026A1 (ja) * | 2009-11-18 | 2011-05-26 | 株式会社ブリヂストン | タイヤ |
US9266396B2 (en) | 2010-11-15 | 2016-02-23 | Bridgestone Corporation | Pneumatic radial tire for passenger cars |
JP5771407B2 (ja) * | 2011-02-16 | 2015-08-26 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5337201B2 (ja) * | 2011-06-20 | 2013-11-06 | 住友ゴム工業株式会社 | 空気入りタイヤ |
WO2013015410A1 (ja) * | 2011-07-27 | 2013-01-31 | 株式会社ブリヂストン | タイヤ |
DE102012108870A1 (de) * | 2012-09-20 | 2014-03-20 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
JP5781566B2 (ja) | 2013-07-10 | 2015-09-24 | 株式会社ブリヂストン | 空気入りタイヤ |
DE102014212352A1 (de) * | 2014-06-26 | 2015-12-31 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
US9834431B2 (en) * | 2015-08-28 | 2017-12-05 | Hope Global, Division Of Nfa Corp. | Listing bead for upholstery clips |
CN107685600B (zh) * | 2016-08-03 | 2020-09-08 | 横滨橡胶株式会社 | 充气轮胎 |
JP6907690B2 (ja) * | 2017-05-16 | 2021-07-21 | 住友ゴム工業株式会社 | タイヤ |
JP7056150B2 (ja) * | 2017-12-28 | 2022-04-19 | 住友ゴム工業株式会社 | タイヤ |
KR102034814B1 (ko) * | 2018-09-13 | 2019-10-21 | 한국타이어앤테크놀로지주식회사 | 공기입 타이어 |
JP6648801B1 (ja) * | 2018-10-23 | 2020-02-14 | 横浜ゴム株式会社 | 空気入りタイヤ |
DE102019200438A1 (de) * | 2019-01-16 | 2020-07-16 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
CN111483273B (zh) * | 2020-05-20 | 2022-05-31 | 安徽佳通乘用子午线轮胎有限公司 | 一种抗湿滑低噪音充气轮胎 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0365407A (ja) * | 1989-08-02 | 1991-03-20 | Bridgestone Corp | 排水性に優れるトレッドを備えた空気入りタイヤ |
JP2000043514A (ja) * | 1998-05-28 | 2000-02-15 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2000247111A (ja) * | 1999-02-26 | 2000-09-12 | Bridgestone Corp | 空気入りタイヤ |
JP2000272307A (ja) * | 1999-03-25 | 2000-10-03 | Sumitomo Rubber Ind Ltd | 空気入りタイヤ |
JP2001026205A (ja) * | 1999-07-13 | 2001-01-30 | Bridgestone Corp | 空気入りタイヤ |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2604920A (en) * | 1950-01-03 | 1952-07-29 | Firestone Tire & Rubber Co | Nontrap stone tread |
IT1054822B (it) * | 1976-01-26 | 1981-11-30 | Pirelli | Pneumatico in grado di offrire caratteristiche di comportamento alla guida e di tenuta di strada sostanzialmente costanti al crescere dell usura |
JPH07115569B2 (ja) * | 1985-03-02 | 1995-12-13 | 株式会社ブリヂストン | 空気入りタイヤ |
JPS62255203A (ja) * | 1986-04-30 | 1987-11-07 | Bridgestone Corp | 空気入りラジアルタイヤ |
JPH01204805A (ja) | 1988-02-12 | 1989-08-17 | Bridgestone Corp | 空気入りタイヤ |
EP1075971B1 (en) * | 1999-02-26 | 2007-08-29 | Bridgestone Corporation | Pneumatic tire |
JP4331345B2 (ja) * | 1999-09-08 | 2009-09-16 | 株式会社ブリヂストン | 方向性パターンを有する空気入りタイヤ |
CN1211219C (zh) * | 1999-12-27 | 2005-07-20 | 倍耐力轮胎公司 | 汽车车轮的轮胎 |
JP4562268B2 (ja) * | 2000-10-10 | 2010-10-13 | 株式会社ブリヂストン | 空気入りタイヤ |
JP3443400B2 (ja) * | 2000-12-06 | 2003-09-02 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP4376591B2 (ja) * | 2003-10-30 | 2009-12-02 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
-
2003
- 2003-05-28 JP JP2003150587A patent/JP4420623B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-26 DE DE602004028018T patent/DE602004028018D1/de not_active Expired - Lifetime
- 2004-05-26 WO PCT/JP2004/007187 patent/WO2004106091A1/ja active Application Filing
- 2004-05-26 US US10/558,618 patent/US7527082B2/en not_active Expired - Fee Related
- 2004-05-26 EP EP04745339A patent/EP1637357B1/en not_active Expired - Fee Related
- 2004-05-26 CN CNB2004800181779A patent/CN100562437C/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0365407A (ja) * | 1989-08-02 | 1991-03-20 | Bridgestone Corp | 排水性に優れるトレッドを備えた空気入りタイヤ |
JP2000043514A (ja) * | 1998-05-28 | 2000-02-15 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2000247111A (ja) * | 1999-02-26 | 2000-09-12 | Bridgestone Corp | 空気入りタイヤ |
JP2000272307A (ja) * | 1999-03-25 | 2000-10-03 | Sumitomo Rubber Ind Ltd | 空気入りタイヤ |
JP2001026205A (ja) * | 1999-07-13 | 2001-01-30 | Bridgestone Corp | 空気入りタイヤ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1637357A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9079459B2 (en) * | 2007-02-07 | 2015-07-14 | Bridgestone Firestone North American Tire, Llc | Tire with tread including rib having chamfered surface |
Also Published As
Publication number | Publication date |
---|---|
CN100562437C (zh) | 2009-11-25 |
CN1812891A (zh) | 2006-08-02 |
EP1637357A4 (en) | 2008-01-23 |
JP2004352023A (ja) | 2004-12-16 |
DE602004028018D1 (de) | 2010-08-19 |
US20070006955A1 (en) | 2007-01-11 |
US7527082B2 (en) | 2009-05-05 |
EP1637357A1 (en) | 2006-03-22 |
EP1637357B1 (en) | 2010-07-07 |
JP4420623B2 (ja) | 2010-02-24 |
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