WO2013002284A1 - プーリ装置 - Google Patents
プーリ装置 Download PDFInfo
- Publication number
- WO2013002284A1 WO2013002284A1 PCT/JP2012/066430 JP2012066430W WO2013002284A1 WO 2013002284 A1 WO2013002284 A1 WO 2013002284A1 JP 2012066430 W JP2012066430 W JP 2012066430W WO 2013002284 A1 WO2013002284 A1 WO 2013002284A1
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- WIPO (PCT)
- Prior art keywords
- pulley
- outer ring
- peripheral surface
- outer peripheral
- axial direction
- Prior art date
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- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/38—Means or measures for increasing adhesion
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- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/48—Pulleys manufactured exclusively or in part of non-metallic material, e.g. plastics
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
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- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/42—Groove sizes
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/63—Gears with belts and pulleys
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- 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
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0078—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratio comprising twelve or more forward speeds
Definitions
- the present invention is a mechanism for driving an auxiliary machine such as a compressor used in an air conditioner for an automobile by an endless belt, and a crank pulley fixed to an end of the crankshaft and an end of a camshaft by a timing belt.
- the present invention relates to a pulley apparatus such as a guide pulley or a tension pulley, which is used by being incorporated in a belt transmission mechanism such as a mechanism for transmitting a rotational force with a cam pulley.
- FIG. 9 shows the structure of a pulley apparatus incorporating a synthetic resin pulley disclosed in Japanese Patent Laid-Open No. 10-122339.
- a pulley apparatus 1 includes a synthetic resin pulley 2 for belting an outer peripheral surface, and a rolling bearing which is a single row deep groove type radial ball bearing for rotatably supporting the pulley 2 on a support shaft or the like. 3.
- the rolling bearing 3 includes an inner ring 5 having a single-row inner ring raceway 4 on an outer peripheral surface, an outer ring 7 having a single-row outer ring raceway 6 on an inner peripheral surface, and between the inner ring raceway 4 and the outer ring raceway 6. And a plurality of rolling elements 8 provided so as to be freely rollable.
- a sealing plate 9 is provided between the outer peripheral surfaces of both ends of the inner ring 5 and the inner peripheral surfaces of both ends of the outer ring 7 to prevent the grease filled in the inner space where the rolling elements 8 are installed from leaking outside, It prevents external dust from entering the internal space.
- the pulley 2 is fixed to the outer peripheral surface of the outer ring 7 of the rolling bearing 3 configured as described above.
- the pulley 2 has an inner diameter side cylindrical portion 10 and an outer diameter side cylindrical portion 11 provided concentrically with each other.
- the intermediate portion outer peripheral surface of the inner diameter side cylindrical portion 10 and the intermediate portion inner peripheral surface of the outer diameter side cylindrical portion 11 are connected by a ring-shaped connecting portion 12, and a plurality of reinforcements are provided on both side surfaces of the connecting portion 12.
- the ribs 13 are provided radially.
- Such a pulley 2 is fixed by injection molding around the outer ring 7 that constitutes the rolling bearing 3 with the inner diameter side cylindrical portion 10.
- the pulley apparatus 1 is a molten thermoplastic resin in a cavity having an inner shape corresponding to the outer shape of the pulley 2 provided in the mold in a state where the outer circumferential portion of the outer ring 7 is molded on the inner circumferential side. After the thermoplastic resin is cooled and solidified, the mold is opened and the pulley 2 together with the rolling bearing 3 is taken out from the cavity.
- the pulley device 1 configured as described above is used as a guide pulley or a tension pulley incorporated in a belt transmission mechanism that drives an auxiliary machine of an automobile. That is, the inner ring 5 constituting the rolling bearing 3 is externally fitted and fixed to a support shaft fixed to a fixed part such as a cylinder block of the engine. Then, an endless belt is stretched around the outer peripheral surface of the pulley 2. As the endless belt travels, the pulley 2 rotates to ensure the winding angle and tension of the endless belt.
- the outer ring 7 is made of a metal material such as bearing steel, and therefore the linear expansion coefficient of the outer ring 7 and the pulley 2 is different. Therefore, the adhesion between the outer ring 7 and the pulley 2 is reduced due to a temperature rise during use, and a relative slip (creep) may occur between the outer ring 7 and the pulley 2.
- Techniques for preventing such creep are disclosed in JP-A-61-38218, JP-A-50-20043, JP-A-50-23540, and JP-A-11-148550. Yes. Among them, in the pulley apparatus disclosed in Japanese Patent Laid-Open No.
- a knurl (serration) 14 is formed on the outer peripheral surface of the outer ring 7a over the entire periphery, and the outer ring 7a is made of synthetic resin. Creeping is prevented by causing the knurl 14 to bite into the inner peripheral surface of the pulley with the made pulley fitted.
- a concave groove 15a (15b) having an axial width different from the circumferential direction is formed on the outer peripheral surface of the outer ring 7b (7c).
- a synthetic resin pulley is fixed to the outer peripheral surface of the outer ring 7b (7c) by injection molding.
- the melted thermoplastic resin is filled into the concave grooves 15a (15b). Since the groove 15a (15b) has a different axial width with respect to the circumferential direction, the outer ring 7b (7c) is engaged with the inner surface of the groove 15a (15b) and the synthetic resin solidified in the groove 15a (15b). ) And the pulley are prevented from generating creep.
- a groove 15c is formed over the entire circumference, and a synthetic resin pulley is fixed to the outer circumferential surface of the outer ring 7d by injection molding. Since the pair of concave grooves 15c are inclined in the axial direction, the occurrence of creep between the outer ring 7d and the pulley is prevented.
- the structures disclosed in Japanese Patent Application Laid-Open Nos. 61-38218, 50-20043, and 50-23540 prevent creep between the pulley and the outer rings 7a to 7d. Yes, but there are still problems to solve. That is, in the case of the structure disclosed in Japanese Patent Application Laid-Open No. 61-38218, the knurl 14 is formed over the entire outer peripheral surface of the outer ring 7a. Therefore, after the knurl 14 is formed, the outer ring 7a is subjected to heat treatment. The outer ring 7a may be deformed by residual strain. Further, when the outer ring raceway 6 is formed on the inner peripheral surface of the outer ring 7a, it is difficult to accurately support the outer peripheral surface of the outer ring 7a. For this reason, the workability and machining accuracy of the outer ring raceway 6 may be reduced.
- the shape of the cylindrical surface remaining on the outer peripheral surfaces of the outer rings 7b to 7d is the circumferential direction. Varies over time. For this reason, when the outer rings 7b to 7d are subjected to heat treatment after the concave grooves 15a to 15c are formed, the outer rings 7b to 7d may be deformed by residual strain.
- the locking groove 16 is provided in a part of the outer peripheral surface of the outer ring 7e constituting the rolling bearing 3a in the axial direction, and the concave portion 17 and the convex portion 18 by knurling are formed on the bottom surface of the locking groove 16.
- Flat knurled eyes 19 configured by being alternately arranged over the circumference are provided.
- a part of the synthetic resin constituting the pulley 2a is made to enter the concave portion 17 formed on the bottom surface of the locking groove 16 of the outer ring 7e, and the protrusions 20 that are long in the axial direction on the inner peripheral surface of the pulley 2a. Is forming.
- the engagement between these protrusions 20 and the knurled eyes 19 of the outer ring 7e prevents creep between the pulley 2a and the outer ring 7e.
- the shape of the cylindrical surface remaining on the outer peripheral surface of the outer ring 7e is the same in the circumferential direction, so that the knurled mesh is formed on the outer peripheral surface of the outer ring 7e. Even if the outer ring 7e is subjected to heat treatment after the formation of 19, the outer ring 7e is prevented from being deformed by residual strain. However, in this structure, the number, shape, and dimensions of the concave portions 17 and the convex portions 18 of the knurled eye 19 are not particularly restricted.
- a gap may occur between the inner peripheral surface of the pulley 2a and the outer peripheral surface of the outer ring 7e.
- the circumferential length of the concave portion 17 is short (substantially 0) and the cross-sectional shape of the protrusion 20 is a triangle, a gap is formed between the inner peripheral surface of the pulley 2a and the outer peripheral surface of the outer ring 7e. It is likely to occur. As a result, there is a possibility that the pulley 2a and the outer ring 7e are rattled or that the coupling strength between the pulley 2a and the outer ring 7e cannot be secured sufficiently.
- an object of the present invention is to provide a pulley apparatus that can reliably prevent creep from occurring between a synthetic resin pulley and a metal material outer ring.
- the pulley apparatus includes a pulley and a rolling bearing.
- the rolling bearing includes an inner ring having an inner ring raceway on an outer peripheral surface, an outer ring having an outer ring raceway on an inner peripheral surface, and a plurality of rolling elements provided in a freely rollable manner between the inner ring raceway and the outer ring raceway. And have.
- the pulley has an outer peripheral surface on which a belt is stretched and an inner peripheral surface that is fitted on the outer peripheral surface of the outer ring.
- the present invention is preferably applied to a pulley apparatus in which the inner ring raceway and the outer ring raceway are each a single row deep groove type, and the rolling elements are balls.
- At least a locking groove having a width in the range of 1/20 to 1/2 of the width of the outer ring is formed in a part of the outer peripheral surface of the outer ring in the axial direction.
- One knurled eye is formed on the bottom surface of the locking groove, and the concave and convex portions extending in the width direction are alternately arranged over the entire circumference by knurling.
- the number, shape, and dimensions of the concave and convex portions are regulated so as to satisfy all the following conditions (1) to (3).
- the crossing angle ⁇ between two inner side surfaces that are continuous with the tip surface of the adjacent convex portion is in the range of 45 degrees to 120 degrees, and the shape is Shape.
- the diameter D of the circumscribed circle of the tip surface of the convex portion and the circumferential length L of the bottom surface of the concave portion satisfy the relationship of 0.01D ⁇ L ⁇ 0.03D.
- the diameter D and the radial depth of the concave portion h satisfy the relationship of 0.004D ⁇ h ⁇ 0.015D.
- a plurality of trapezoidal protrusions extending in the width direction and engaging with the recesses are formed on a part of the inner peripheral surface of the pulley over the entire circumference, and these protrusions are formed in the recesses.
- the pulley is held on the outer peripheral surface of the rolling bearing.
- the pulley is fixed to the outer peripheral surface of the outer ring by injection molding, and at the time of injection molding, the molten resin constituting the pulley is filled and solidified in the locking groove, whereby the protrusions are formed. As a result, the protrusions engage with the recesses.
- the knurled concave and convex portions are provided in an inclined state with respect to the axial direction.
- the pulley device is also provided with an inner ring having an inner ring raceway on an outer peripheral surface, an outer ring having an outer ring raceway on an inner peripheral surface, and a rollable portion between the inner ring raceway and the outer ring raceway.
- a rolling bearing having a plurality of rolling elements, an outer peripheral surface on which a belt is stretched, and a pulley having an inner peripheral surface fitted on the outer peripheral surface of the outer ring are provided.
- At least one locking groove having a width in the range of 1/20 to 1/2 of the width of the outer ring is provided on a part of the outer peripheral surface of the outer ring in the axial direction, and the bottom surface of the locking groove is provided.
- Knurled to form a knurled eye in which concave portions and convex portions extending in the width direction in an inclined state with respect to the axial direction are alternately arranged over the entire circumference, and each of these concave portions is formed on the bottom surface and the bottom surface.
- it is configured to have a trapezoidal shape with two inner side surfaces that are continuous with the tip surfaces of adjacent convex portions.
- a plurality of trapezoidal ridges extending in the width direction in a state inclined with respect to the axial direction and engaging with the recesses are formed on a part of the axial direction of the inner peripheral surface of the pulley over the entire circumference.
- the pulley is fixed to the outer peripheral surface of the outer ring by injection molding, and at the time of the injection molding, the molten resin constituting the pulley is filled and solidified in the locking groove, thereby Is preferably formed.
- the locking grooves are formed at two positions in the axial direction on the outer peripheral surface of the outer ring, and the knurled concave and convex portions formed on the bottom surfaces of the locking grooves are opposite to each other in the axial direction. It is preferable to provide it in a state inclined by the same angle in the direction.
- the configuration of the second mode can be applied to the configuration of the first mode.
- the pulley device of the present invention by appropriately regulating the number, shape, and dimensions of the knurled recesses and protrusions formed on the outer peripheral surface of the outer ring, a synthetic resin pulley and a metal material outer ring are provided. It is possible to reliably prevent creep from occurring between the two.
- the force applied to the contact portion between the circumferential side surface of the protrusion formed on the inner peripheral surface of the pulley and the inner surface of the knurled eye is reduced. Can be suppressed.
- FIG. 1 is a perspective view showing a rolling bearing taken out from a pulley apparatus according to a first example of an embodiment of the present invention.
- FIG. 2 is a front view of the rolling bearing of FIG. 1 viewed from the radial direction.
- FIG. 3 is a partial enlarged aa sectional view of FIG.
- FIG. 4 is a view similar to FIG. 3 showing the pulley device of the first example of the embodiment of the present invention in a state where the pulley is fixed to the outer diameter side of the outer ring.
- FIG. 5 is a partially cut perspective view of the pulley device showing a second example of the embodiment of the present invention.
- FIG. 1 is a perspective view showing a rolling bearing taken out from a pulley apparatus according to a first example of an embodiment of the present invention.
- FIG. 2 is a front view of the rolling bearing of FIG. 1 viewed from the radial direction.
- FIG. 3 is a partial enlarged aa sectional view of FIG.
- FIG. 6 is a front view of the rolling bearing constituting the pulley device of the second example of the embodiment of the present invention as seen from the radial direction.
- FIG. 7 is a partially cut perspective view of the pulley device showing a third example of the embodiment of the present invention.
- FIG. 8 is the front view which looked at the rolling bearing which comprises the pulley apparatus of the 3rd example of embodiment of this invention from radial direction.
- FIG. 9 is a partially cut perspective view showing an example of a conventional pulley apparatus.
- FIG. 10 is a half sectional view (A) of a rolling bearing showing a first example of a structure for preventing creep in a conventional pulley apparatus, and a schematic side view of the rolling bearing with a part omitted (B). ).
- FIG. 10 is a half sectional view (A) of a rolling bearing showing a first example of a structure for preventing creep in a conventional pulley apparatus, and a schematic side view of the rolling bearing with a part
- FIG. 11 is a front view of a rolling bearing as viewed from the radially outer side, showing a second example (A) and a third example (B) of a structure for preventing creep in a conventional pulley apparatus.
- FIG. 12 is a front view of a rolling bearing as viewed from the outside in the radial direction, showing a fourth example of a structure for preventing creep in a conventional pulley apparatus.
- FIG. 13 is principal part sectional drawing which shows the 5th example of the structure for preventing creep in the conventional pulley apparatus.
- 14 is a cross-sectional view taken along line bb of FIG.
- FIG. 1 to 3 show a first example of an embodiment of the present invention.
- the feature of this example is that a knurled eye 19a provided on a part of the outer peripheral surface of the outer ring 7f of this pulley apparatus is realized in order to realize a pulley apparatus that reliably prevents creep between the pulley and the outer ring.
- the shape and size of the concave portion 17a and the convex portion 18a are devised. Since the structure and operation of the other parts are the same as those of the conventional pulley device, the illustration and description of the equivalent parts are omitted or simplified, and the following description will focus on the characteristic parts of this example.
- the outer ring 7f constituting the rolling bearing 3b of the pulley device of this example has an outer diameter of 35 mm to 60 mm, a width dimension of 8 mm to 20 mm, and a locking groove 16a provided in a part of the outer peripheral surface in the axial direction. Yes.
- a knurled eye 19a is formed on the bottom surface of the locking groove 16a.
- the knurled eye 19a is configured by alternately arranging concave portions 17a and convex portions 18a by knurling over the entire circumference.
- a long ridge 20a is formed in a part in the axial direction of the inner peripheral surface of the pulley 2b. . Occurrence of creep between the pulley 2b and the outer ring 7f is prevented by the engagement between the protrusion 20a and the knurled eye 19a of the outer ring 7f.
- the width W 19 of the knurls 19a when the width of the outer ring 7f was W 7, is regulated such that the relationship 0.05W 7 ⁇ W 19 ⁇ 0.5W 7 .
- the total number of recesses 17a is 50 to 150.
- the number of the recesses 17a that is, the number of the protrusions 20a is less than 50, the number of the protrusions 20a is not sufficient, and the creep torque applied between the pulley 2b and the outer ring 7f may not be supported.
- the number of the recesses 17a exceeds 150, even if a part of the synthetic resin constituting the pulley 2b is made to enter, the synthetic resin does not spread throughout the recesses 17a, and the bottom surface 21 of the recesses 17a. There is a possibility that a gap is generated between the tip end surface of the protrusion 20a.
- an inner surface (step surface) 23 that is continuous with the tip surface 22 of the convex portion 18a and faces each other in the circumferential direction is provided among the inner surfaces constituting the concave portion 17a, and the intersection angle ⁇ between the adjacent inner side surfaces 23 is provided. Is regulated in the range of 45 to 120 degrees. When the crossing angle ⁇ is less than 45 degrees, even if a part of the synthetic resin constituting the pulley 2b is caused to enter the recess 17a, the synthetic resin does not reach the entire recess 17a, and the bottom surface 21 of the recess 17a. There is a possibility that a gap is formed between the protrusion 20a and the tip end surface of the protrusion 20a.
- the radial depth h of the concave portion 17a and the diameter (circular diameter of the convex portion 18a) D of the circumscribed circle of the tip surface 22 of the convex portion 18a satisfy the relationship of 0.004D ⁇ h ⁇ 0.015D.
- h> 0.015D even if a part of the synthetic resin constituting the pulley 2b is made to enter, the synthetic resin is difficult to spread throughout the concave portion 17a, and the bottom surface 21 of the concave portion 17a and the tip surface of the ridge 20a There may be a gap between them.
- h ⁇ 0.004D the coupling strength between the recess 17a and the protrusion 20a cannot be sufficiently secured, and the creep torque applied between the pulley 2b and the outer ring 7f may not be supported.
- the circumferential length L of the bottom surface 21 of the concave portion 17a and the diameter D of the circumscribed circle of the tip surface 22 of the convex portion 18a satisfy the relationship of 0.01D ⁇ L ⁇ 0.03D.
- L ⁇ 0.01D it is difficult to sufficiently secure the strength of the protrusion 20a, and there is a possibility that the torque applied between the pulley 2b and the outer ring 7f cannot be supported.
- L> 0.03D it is difficult to secure a sufficient number of recesses 17a.
- FIG. 5 and 6 show a second example of the embodiment of the present invention.
- the concave portion 17b and the convex portion 18b of the knurled eye 19b are provided in an inclined state with respect to the axial direction of the rolling bearing 3c.
- Such knurls 19b can be formed, for example, by knurling the bottom surface of the locking groove 16b with a roll knurl piece for a cross.
- a part of the synthetic resin constituting the pulley 2c enters and solidifies into the recess 17b, so that the inner peripheral surface of the pulley 2c is inclined with respect to the axial direction.
- the protrusion 20b is formed. Occurrence of creep between the pulley 2c and the outer ring 7g is prevented by the engagement between the protrusion 20b and the knurled eye 19b of the outer ring 7g.
- An angle (twist angle) ⁇ formed between the direction in which the concave portion 17b and the convex portion 18b are formed and the axial direction of the rolling bearing 3b is in the range of 0 ° ⁇ ⁇ 10 °, preferably in the range of 0 ° ⁇ ⁇ 3 °. regulate.
- the lower limit value of the range of the torsion angle ⁇ is determined from the surface that suppresses the force applied to the inner side surface (step surface) of the recess 17b from the circumferential side surface of the ridge.
- the upper limit value of the range of the twist angle ⁇ is determined from the surface that prevents the tangential force related to the engaging portion between the circumferential side surface of the protrusion and the inner surface (step surface) of the recess 17b from becoming too large. .
- the axial load generated on the outer ring 7f with the rotation of the pulley 2c is supported by the engagement between the width direction end face of the protrusion 20b and the width direction inner end face of the recess 17b.
- the inner end surface in the width direction of the recess 17b is provided in a direction perpendicular to the axial direction of the outer ring 7f.
- the concave portion 17b is formed across the width direction of the locking groove 16b (with both end portions in the width direction of the concave portion 17b opened on both side surfaces in the width direction of the locking groove 16b), or the concave portion 17b and the convex portion 18b. It is also possible to make the surface perpendicular to the forming direction.
- FIG. 7 and 8 show a third example of the embodiment of the present invention.
- knurls 19b and 19c are provided symmetrically with respect to the central portion in the axial direction of the outer ring 7h at two positions on the outer peripheral surface of the outer ring 7h. That is, the locking grooves 16b and 16c are formed at two positions separated in the axial direction on the outer peripheral surface of the outer ring 7h, respectively, and the concave portions 17b and 17c of the knurled eyes 19b and 19c are formed on the bottom surfaces of the locking grooves 16b and 16c.
- the portions 18b and 18c are formed in a state inclined at the same angle in opposite directions with respect to the axial direction.
- the period (pitch) between the recesses 17b and 17c and the projections 18b and 18c is not necessarily the same.
- the period of one knurled eye 19b is half the period of the other knurled eye 19c. The period can be shifted.
- knurls 19b and 19c are provided symmetrically with respect to the central portion in the axial direction of the outer ring 7h at two positions on the outer peripheral surface of the outer ring 7h. For this reason, the axial loads generated on the outer ring 7h accompanying the rotation of the pulley 2d can be canceled out by canceling each other.
- the structure and effects of other parts are the same as in the second example of the embodiment.
- Synthetic resin was injected into the outer ring of each example shown in Table 1, and pulleys were formed on the outer peripheral surfaces of these outer rings to obtain a pulley device.
- Nylon 66 was used as a synthetic resin material constituting the pulley, the outer diameter of the pulley was 70 mm, and the width was 24 mm.
- the pulley devices thus obtained were fixed so that the pulleys could not rotate, and a force in the rotational direction was applied to the outer ring. In this state, the magnitude of torque was measured three times when creep occurred between the pulley and the outer ring (the outer ring rotated relative to the pulley).
- Table 2 shows the results of the above experiment.
- the standard deviation of the magnitude of the torque when creep occurs is 16.3 in the comparative example, while it is suppressed to about 8.7 in the example. This is because when the number, shape and dimensions of the knurled eyes are not properly regulated, a gap is formed between the bottom surface of the concave portion of the knurled eyes and the tip surface of the ridge, and the coupling between the pulley and the outer ring. This indicates that there may be cases where sufficient strength cannot be secured.
- the average value of the magnitude of the torque when creep occurs is improved by about 10% in the case of the example with respect to the comparative example.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Pulleys (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
している。
(2)前記凸部の先端面の外接円の直径Dと、前記凹部の底面の周方向長さLとが、0.01D≦L≦0.03Dの関係を満たす。
(3)前記直径Dと、前記凹部の径方向深さをhとが、0.004D≦h≦0.015Dの関係を満たす。
図1~図3は、本発明の実施の形態の第1例を示している。なお、本例の特徴は、プーリと外輪との間でクリープが発生することを確実に防止するプーリ装置を実現するため、このプーリ装置の外輪7fの外周面の一部に設けたローレット目19aの凹部17aおよび凸部18aの形状および寸法を工夫した点にある。その他の部分の構造および作用は、従来のプーリ装置と同様であるから、同等部分に関する図示および説明は省略または簡略化して、以下、本例の特徴部分を中心に説明する。
図5および図6は、本発明の実施の形態の第2例を示している。本例の場合、ローレット目19bの凹部17bおよび凸部18bを、転がり軸受3cの軸方向に対し傾斜した状態で設けている。このようなローレット目19bは、例えば綾目用転造ローレット駒により係止溝16bの底面にローレット加工を施すことで形成できる。そして、実施の形態の第1例の場合と同様に、凹部17bに、プーリ2cを構成する合成樹脂の一部を進入および固化させることで、プーリ2cの内周面に軸方向に対し傾斜した突条20bを形成している。突条20bと外輪7gのローレット目19bとの係合により、プーリ2cと外輪7gとの間のクリープの発生を防止している。
図7および図8は、本発明の実施の形態の第3例を示している。本例の場合、外輪7hの外周面の2箇所位置にローレット目19b、19cを、外輪7hの軸方向中央部に関し対称に設けている。すなわち、外輪7hの外周面の軸方向に離隔した2箇所位置に、それぞれ係止溝16b、16cを形成し、係止溝16b、16cの底面にローレット目19b、19cの凹部17b、17cと凸部18b、18cを軸方向に関して、互いに逆方向に、同じ角度だけ傾斜した状態で形成している。ただし、凹部17b、17cと凸部18b、18cとの周期(ピッチ)については、必ずしも同じとする必要はなく、たとえば一方のローレット目19bの周期に対し、他方のローレット目19cの周期を、半周期ずらすこともできる。
2、2a~2d プーリ
3、3a~3c 転がり軸受
4 内輪軌道
5 内輪
6 外輪軌道
7、7a~7h 外輪
8 転動体
9 密封板
10 内径側円筒部
11 外径側円筒部
12 連結部
13 補強リブ
14 ナール
15a~15c 凹溝
16、16a~16c 係止溝
17、17a~17c 凹部
18、18a~18c 凸部
19、19a~19c ローレット目
20、20a、20b 突条
21 底面
22 先端面
23 内側面
Claims (6)
- 外周面に内輪軌道を有する内輪と、内周面に外輪軌道を有する外輪と、これら内輪軌道と外輪軌道との間に転動自在に設けられた複数個の転動体とを有する転がり軸受と、
ベルトが掛け渡される外周面と、前記外輪の外周面に外嵌される内周面を有するプーリと、
を備え、
前記外輪の外周面の軸方向の一部に、この外輪の幅の1/20~1/2の範囲の幅を有する係止溝が少なくとも1つ設けられており、
この係止溝の底面に、ローレット加工による、幅方向に伸長する凹部と凸部とが全周にわたって交互に配置されるローレット目が形成されており、これらの凹部のそれぞれは、底面とこの底面の周方向両側で、隣接する凸部の先端面と連続する2つの内側面とを備え、この内側面同士の交差角度θが、45度~120度の範囲に規制されることにより、凹部が台形状となっており、さらに、前記凸部の先端面の外接円の直径をDとし、前記凹部の径方向深さをhとし、これらの凹部の底面の周方向長さをLとした場合に、0.004D≦h≦0.015Dで、かつ、0.01D≦L≦0.03Dとなる関係を満たし、
前記プーリの内周面の軸方向の一部に、幅方向に伸長し、前記凹部と係合する複数の台形状の突条が全周にわたって形成されている、
プーリ装置。 - 前記プーリが前記外輪の外周面に対して射出成形により固設されており、この射出成形時に、このプーリを構成する溶融樹脂が、前記係止溝に充填固化されることにより、前記突条が形成されている、請求項1に記載のプーリ装置。
- 前記ローレット目の凹部と凸部とが、軸方向に対し傾斜した状態で設けられている、請求項1に記載のプーリ装置。
- 外周面に内輪軌道を有する内輪と、内周面に外輪軌道を有する外輪と、これら内輪軌道と外輪軌道との間に転動自在に設けられた複数個の転動体とを有する転がり軸受と、
ベルトが掛け渡される外周面と、前記外輪の外周面に外嵌される内周面を有するプーリと、
を備え、
前記外輪の外周面の軸方向の一部に、この外輪の幅の1/20~1/2の範囲の幅を有する係止溝が少なくとも1つ設けられており、
この係止溝の底面に、ローレット加工による、軸方向に対し傾斜した状態で幅方向に伸長する凹部と凸部とが全周にわたって交互に配置されるローレット目が形成されており、これらの凹部のそれぞれは、底面とこの底面の周方向両側で、隣接する凸部の先端面と連続する2つの内側面とを備え、かつ、台形状となっており、
前記プーリの内周面の軸方向の一部に、軸方向に対し傾斜した状態で幅方向に伸長し、前記凹部と係合する複数の台形状の突条が全周にわたって形成されている、
プーリ装置。 - 前記プーリが前記外輪の外周面に対して射出成形により固設されており、この射出成形時に、このプーリを構成する溶融樹脂が、前記係止溝に充填固化されることにより、前記突条が形成されている、請求項4に記載のプーリ装置。
- 前記係止溝が、前記外輪の外周面の軸方向の2箇所位置に形成されており、これらの係止溝の底面に形成されたローレット目の凹部と凸部とが、軸方向に対し互いに反対方向に同じ角度だけ傾斜した状態で設けられている、請求項3または4に記載のプーリ装置。
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JP2012554131A JP5534042B2 (ja) | 2011-06-30 | 2012-06-27 | プーリ装置 |
EP12761535.9A EP2728223B1 (en) | 2011-06-30 | 2012-06-27 | Pulley device |
US13/696,078 US9273772B2 (en) | 2011-06-30 | 2012-06-27 | Pulley apparatus |
US14/991,990 US9829086B2 (en) | 2011-06-30 | 2016-01-10 | Pulley apparatus |
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US14/991,990 Division US9829086B2 (en) | 2011-06-30 | 2016-01-10 | Pulley apparatus |
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EP (2) | EP2728223B1 (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108662117A (zh) * | 2018-07-25 | 2018-10-16 | 浙江吉利控股集团有限公司 | 减振传动轮及具有其的发动机 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013002284A1 (ja) * | 2011-06-30 | 2013-01-03 | 日本精工株式会社 | プーリ装置 |
DE102013011816B4 (de) * | 2013-07-16 | 2015-10-08 | Sew-Eurodrive Gmbh & Co Kg | Getriebe mit einem ersten und einem zweiten Gehäuseteil |
CN103438104B (zh) * | 2013-09-11 | 2016-08-17 | 西北农林科技大学 | 一种曲沟球轴承 |
JP6614162B2 (ja) * | 2015-02-03 | 2019-12-04 | 株式会社ジェイテクト | ステアリング装置 |
JP2017032096A (ja) * | 2015-08-04 | 2017-02-09 | Ntn株式会社 | 樹脂プーリ |
US10655724B2 (en) * | 2016-04-27 | 2020-05-19 | Dayco Ip Holdings, Llc | Asymmetric spoke design for torsional vibration dampers |
CN105840786A (zh) * | 2016-06-06 | 2016-08-10 | 吉林大学 | 无支撑自动张紧链轮 |
JP6811702B2 (ja) * | 2017-12-19 | 2021-01-13 | Nok株式会社 | トーショナルダンパ |
DE102017223317A1 (de) * | 2017-12-20 | 2019-06-27 | Aktiebolaget Skf | Riemenscheibenvorrichtung, insbesondere für eine Spannrolle oder Laufrolle |
FR3078759B1 (fr) | 2018-03-06 | 2020-02-28 | Aktiebolaget Skf | Dispositif de poulie pour galet tendeur ou enrouleur |
FR3078758B1 (fr) * | 2018-03-06 | 2020-04-03 | Aktiebolaget Skf | Dispositif de poulie pour galet tendeur ou enrouleur |
US10837487B2 (en) * | 2018-03-29 | 2020-11-17 | Transportation Ip Holdings, Llc | Bearing assembly and method |
IT201800007973A1 (it) * | 2018-08-08 | 2020-02-08 | Skf Ab | Modulo cuscinetto mozzo ruota per un montante o articolazione di sospensione |
DE102019201751A1 (de) * | 2019-02-11 | 2020-08-13 | Aktiebolaget Skf | Riemenscheibenvorrichtung insbesondere für eine Spannrolle oder eine Laufrolle |
US11731465B2 (en) * | 2021-10-07 | 2023-08-22 | Goodrich Corporation | De-lamination resistant and integrated visual wear indicator tire hub |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5020043U (ja) | 1973-06-21 | 1975-03-06 | ||
JPS5023540A (ja) | 1973-06-07 | 1975-03-13 | ||
JPS5023540U (ja) | 1973-06-27 | 1975-03-17 | ||
JPS6138218A (ja) | 1984-07-31 | 1986-02-24 | Nec Corp | ベアリングの固定構造 |
JPH10122339A (ja) | 1996-10-23 | 1998-05-15 | Nippon Seiko Kk | 合成樹脂製アイドラプーリ |
JPH11148550A (ja) | 1997-11-14 | 1999-06-02 | Ntn Corp | 樹脂プーリ |
JP2004028275A (ja) * | 2002-06-27 | 2004-01-29 | Nsk Ltd | 軸受一体型樹脂プーリ |
JP2008050902A (ja) * | 2006-08-28 | 2008-03-06 | Jtekt Corp | 転がり軸受 |
JP2008249131A (ja) * | 2007-03-07 | 2008-10-16 | Jtekt Corp | 樹脂巻き部品 |
JP2010084817A (ja) * | 2008-09-30 | 2010-04-15 | Ntn Corp | 樹脂プーリ付き軸受、およびその製造方法 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1615170A (en) * | 1925-12-29 | 1927-01-18 | William S Evans | Crown and traveling block pulley |
US2241686A (en) * | 1938-07-11 | 1941-05-13 | Chicago Roller Skate Co | Wheel guard |
US2262714A (en) * | 1940-01-19 | 1941-11-11 | Chicago Roller Skate Co | Roller |
US4103558A (en) * | 1976-09-13 | 1978-08-01 | Peabody Edwin A | Bogie wheel |
DE8025902U1 (de) * | 1980-09-27 | 1981-01-15 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Rolle, insbesondere Spannrolle für Riementriebe o.dgl |
IT8453082V0 (it) * | 1984-03-09 | 1984-03-09 | Riv Officine Di Villar Perosa | Gruppo tendicinghia atto ad essere inserito in una trasmissione flessibile in particolare per un autoveicolo |
JPH0225962Y2 (ja) * | 1984-11-12 | 1990-07-16 | ||
US4602875A (en) * | 1985-11-18 | 1986-07-29 | General Motors Corporation | Combined bearing, rotatable member and shield assembly |
US4925322A (en) * | 1988-03-03 | 1990-05-15 | Viv Engineering Inc. | Ball bearing |
US5667280A (en) * | 1993-05-25 | 1997-09-16 | Mechatronics, Inc. | Skate wheel |
DE9319394U1 (de) * | 1993-12-17 | 1994-02-10 | Schaeffler Waelzlager Kg | Spannrolle für einen Riementrieb |
IT1267848B1 (it) * | 1994-08-10 | 1997-02-18 | Alfaplastic Srl | Ruota per pattini con ruote in linea |
US5725448A (en) * | 1994-12-28 | 1998-03-10 | Ntn Corporation | Idler pulley |
US5931755A (en) * | 1996-03-06 | 1999-08-03 | Mailey; John | Pulley made from composite material |
DE29805581U1 (de) * | 1998-03-27 | 1998-05-28 | Skf Gmbh | Laufrolle |
US6450689B1 (en) * | 1999-12-08 | 2002-09-17 | Tokyo Sunworker Co., Ltd. | Roller and method of producing the same |
US6482140B1 (en) * | 1999-12-08 | 2002-11-19 | Tashico Corporation | Roller and method of producing the same |
ITTV20010067A1 (it) * | 2001-05-24 | 2002-11-24 | Benetton Spa | Struttura di cerchione di ruota particolarmente per pattini |
JP2003207032A (ja) * | 2002-01-15 | 2003-07-25 | Denso Corp | 回転体 |
US20040075331A1 (en) * | 2002-10-21 | 2004-04-22 | Black T. Edward | Perdurable composite roller skating cylinder with intrinsic variable longitudinal cushioning |
US20080179940A1 (en) * | 2004-05-18 | 2008-07-31 | Giles A. Hill | Solid rubber tire with flexible hub and replaceable tire tread |
EP1653119B1 (en) * | 2004-10-28 | 2008-02-27 | Dayco Europe S.r.l. con Unico Socio | Pulley and belt drive assembly for driving accessory parts of an internal combustion engine |
FR2923281B1 (fr) * | 2007-11-06 | 2010-04-09 | Skf Ab | Dispositif de galet tendeur ou enrouleur |
JP2009174588A (ja) * | 2008-01-22 | 2009-08-06 | Ntn Corp | 樹脂プーリ付き軸受 |
JP2010090969A (ja) * | 2008-10-07 | 2010-04-22 | Ntn Corp | 樹脂プーリ付き軸受 |
IT1394226B1 (it) * | 2009-04-02 | 2012-06-01 | F I R S R L | Ruota, in particolare per macchine semoventi quali carrelli o simili, e metodo di realizzazione della stessa. |
WO2013002284A1 (ja) * | 2011-06-30 | 2013-01-03 | 日本精工株式会社 | プーリ装置 |
US9416863B2 (en) * | 2013-05-29 | 2016-08-16 | Schaeffler Technologies AG & Co. KG | Pulley ring |
-
2012
- 2012-06-27 WO PCT/JP2012/066430 patent/WO2013002284A1/ja active Application Filing
- 2012-06-27 EP EP12761535.9A patent/EP2728223B1/en active Active
- 2012-06-27 US US13/696,078 patent/US9273772B2/en active Active
- 2012-06-27 EP EP16000740.7A patent/EP3064807A1/en not_active Withdrawn
- 2012-06-27 JP JP2012554131A patent/JP5534042B2/ja active Active
- 2012-06-29 CN CN201210224468.XA patent/CN102853058B/zh active Active
- 2012-06-29 CN CN2012203149226U patent/CN202690964U/zh not_active Expired - Lifetime
-
2016
- 2016-01-10 US US14/991,990 patent/US9829086B2/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5023540A (ja) | 1973-06-07 | 1975-03-13 | ||
JPS5020043U (ja) | 1973-06-21 | 1975-03-06 | ||
JPS5023540U (ja) | 1973-06-27 | 1975-03-17 | ||
JPS6138218A (ja) | 1984-07-31 | 1986-02-24 | Nec Corp | ベアリングの固定構造 |
JPH10122339A (ja) | 1996-10-23 | 1998-05-15 | Nippon Seiko Kk | 合成樹脂製アイドラプーリ |
JPH11148550A (ja) | 1997-11-14 | 1999-06-02 | Ntn Corp | 樹脂プーリ |
JP2004028275A (ja) * | 2002-06-27 | 2004-01-29 | Nsk Ltd | 軸受一体型樹脂プーリ |
JP2008050902A (ja) * | 2006-08-28 | 2008-03-06 | Jtekt Corp | 転がり軸受 |
JP2008249131A (ja) * | 2007-03-07 | 2008-10-16 | Jtekt Corp | 樹脂巻き部品 |
JP2010084817A (ja) * | 2008-09-30 | 2010-04-15 | Ntn Corp | 樹脂プーリ付き軸受、およびその製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2728223A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108662117A (zh) * | 2018-07-25 | 2018-10-16 | 浙江吉利控股集团有限公司 | 减振传动轮及具有其的发动机 |
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CN202690964U (zh) | 2013-01-23 |
US20140155210A1 (en) | 2014-06-05 |
US20160201788A1 (en) | 2016-07-14 |
JP5534042B2 (ja) | 2014-06-25 |
EP3064807A1 (en) | 2016-09-07 |
CN102853058B (zh) | 2015-06-10 |
EP2728223A1 (en) | 2014-05-07 |
CN102853058A (zh) | 2013-01-02 |
US9829086B2 (en) | 2017-11-28 |
EP2728223B1 (en) | 2016-08-03 |
JPWO2013002284A1 (ja) | 2015-02-23 |
US9273772B2 (en) | 2016-03-01 |
EP2728223A4 (en) | 2015-05-06 |
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