WO2016208477A1 - 滑り軸受 - Google Patents
滑り軸受 Download PDFInfo
- Publication number
- WO2016208477A1 WO2016208477A1 PCT/JP2016/067871 JP2016067871W WO2016208477A1 WO 2016208477 A1 WO2016208477 A1 WO 2016208477A1 JP 2016067871 W JP2016067871 W JP 2016067871W WO 2016208477 A1 WO2016208477 A1 WO 2016208477A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frame
- bearing
- peripheral surface
- seat
- fitted
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
- B60N2/161—Rods
- B60N2/1615—Parallelogram-like structure
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/1803—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other with independent front and/or rear adjustment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/1807—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic
- B60N2/181—Rods
- B60N2/1814—Parallelogram-like structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/986—Side-rests
- B60N2/99—Side-rests adjustable
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining
- F16C33/206—Multilayer structures, e.g. sleeves comprising a plastic lining with three layers
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
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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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
- F16C2202/10—Porosity
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
- F16C2208/32—Polytetrafluorethylene [PTFE]
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/66—Acetals, e.g. polyoxymethylene [POM]
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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
- F16C2220/00—Shaping
- F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy
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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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
- F16C2226/12—Force connections, e.g. clamping by press-fit, e.g. plug-in
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing 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
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
Definitions
- the outer peripheral surface of the bearing is fitted and fixed to the frame, and the rotary shaft for the frame is fitted and press-fitted to the inner peripheral surface of the bearing, thereby supporting the frame and the rotary shaft for the frame so as to be rotatable relative to each other.
- the present invention relates to a sliding bearing for an automobile seat frame.
- a bearing alloy layer is provided on a back metal, and a large number of circumferentially extending annular grooves are formed on the inner peripheral surface of the bearing alloy layer in the axial direction, and between adjacent annular grooves in the axial direction.
- a plain bearing in which a ridge extending in the circumferential direction is used (for example, Patent Document 1).
- Japanese Patent No. 2795306 (in particular, refer to paragraph 0006 and FIG. 1)
- the conventional sliding bearing described above has a structure in which the peak portion is formed of metal, for example, when used for a seat frame of an automobile seat, the conventional sliding bearing is adapted to the frame rotation shaft fitted and press-fitted to the inner periphery.
- the frame rotation shaft fitted and press-fitted to the inner periphery.
- the plastic deformation occurs, there is a problem that a gap is generated between the mountain portion and the frame rotation shaft, and the automobile seat is loose.
- the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to avoid the occurrence of backlash in the frame and between the sliding bearing and the frame rotation shaft. It is intended to provide a plain bearing that reduces the frictional resistance of the motor and reduces the power load when adjusting the relative position / posture manually with a motor.
- the invention according to claim 1 includes a bearing outer peripheral surface and a bearing inner peripheral surface, and the bearing outer peripheral surface side is fitted and fixed to the frame, and a frame rotation shaft is fitted and press-fitted to the bearing inner peripheral surface side.
- a sliding bearing that supports the frame and the frame rotation shaft so as to be rotatable with respect to each other, wherein at least the bearing inner peripheral surface of the bearing outer peripheral surface and the bearing inner peripheral surface is made of a resin layer.
- the bearing inner peripheral surface has a concavo-convex shape including a convex contact portion that contacts the frame rotation shaft and a concave non-contact portion that forms a gap without contacting the frame rotation shaft.
- the concave non-contact portion is formed in a cone shape or a spherical shape toward the outer peripheral surface of the bearing.
- the “conical shape” includes not only a cone having a tip but also a truncated cone having a truncated tip.
- the invention according to claim 3 is the above-described configuration in which the concave non-contact portion is formed in a quadrangular pyramid shape toward the outer peripheral surface of the bearing. It solves the problems that have been solved.
- the “quadrangular pyramid shape” includes not only a quadrangular pyramid with a tip but also a truncated quadrangular pyramid with the tip cut off.
- the invention according to claim 4 includes the convex contact portion and the concave non-contact portion on the inner peripheral surface of the bearing, in addition to the configuration of the slide bearing according to any one of claims 1 to 3. This arrangement further solves the above-described problems by constituting a lattice pattern.
- the lattice pattern is configured by arranging a plurality of rhombuses having virtual diagonal lines orthogonal to each other.
- One of the virtual diagonal lines orthogonal to each other is oriented in the same direction as the rotation axis direction of the frame rotation axis, thereby further solving the above-described problem.
- the outer peripheral surface of the bearing is made of a metal plate, and the resin layer is By laminating on the metal plate through a bronze sintered layer impregnated with a part of the resin layer, the above-described problems are further solved.
- the frame is a seat frame of an automobile seat
- the shaft is a rotation shaft for the frame of the automobile seat
- the outer peripheral surface side of the bearing is fitted and fixed to the seat frame of the automobile seat
- the rotation shaft for the frame is on the inner peripheral surface side of the bearing
- the sliding bearing of the present invention comprises a bearing outer peripheral surface and a bearing inner peripheral surface, and by fitting and fixing the bearing outer peripheral surface side to the frame and fitting and fitting the frame rotation shaft to the bearing inner peripheral surface side, Not only can the frame and the frame rotation shaft be rotatably supported, but also the following specific effects can be achieved.
- the bearing outer peripheral side is fitted and fixed to the frame
- the frame rotation shaft is fitted and press-fitted to the bearing inner peripheral side
- the bearing inner periphery made of a resin layer is provided. Since the surface has a convex contact portion that comes into contact with the frame rotation shaft, the convex contact portion contacts the frame rotation shaft without any gaps, so that play or uneven wear that tends to occur in the frame is generated. Can be suppressed.
- the bearing inner peripheral surface made of a resin layer has a concavo-convex shape including a convex contact portion that contacts the frame rotation shaft and a concave non-contact portion that forms a gap without contacting the frame rotation shaft.
- the convex contact portion of the resin layer constituting the inner peripheral surface of the bearing is easily deformed to the concave non-contact portion side, and the concave non-contact portion of the resin layer constituting the inner peripheral surface of the bearing is used for the frame. Since the contact area with the rotating shaft is reduced to reduce the frictional resistance, it is possible to reduce the motor and manual power load required for relative position / posture adjustment.
- the concave non-contact portion is formed in a cone shape or a spherical shape toward the outer peripheral surface of the bearing. Therefore, the convex contact portion is easily deformed by the pressing force acting between the frame rotation shafts, and thus the amount of deformation of the convex contact portion is adjusted to some extent to avoid both play and reduce frictional resistance. can do.
- the concave non-contact portion is formed in a quadrangular pyramid shape toward the bearing outer peripheral surface, The same effect as that of the invention of claim 2 can be obtained.
- the convex contact portion and the concave non-contact portion of the bearing inner peripheral surface Since the arrangement of the above and the other constitutes a lattice pattern, the convex contact portion is easily deformed by the pressing force acting with the frame rotation shaft on the entire bearing inner peripheral surface. By adjusting the deformation amount of the convex contact portion over the entire surface to some extent, it is possible to achieve both avoidance of backlash and reduction of frictional resistance.
- one of the virtual diagonal lines of the rhombuses forming the lattice pattern is a frame rotation.
- the convex contact portion is deformed not only in the rotation axis direction but also in the rotation direction by being oriented in the same direction as the rotation axis direction of the shaft, it is deformed only in the rotation axis direction. Since the pressing force acting between the rotary shafts for use is reduced, the frictional resistance between the sliding bearing and the rotary shaft for frames can be further reduced.
- the bearing outer peripheral surface is made of a metal plate, and the resin layer is Since it is difficult for the resin layer to peel off by being laminated on the metal plate via a bronze sintered layer impregnated with a part of the resin layer, the relative position and orientation are suppressed while suppressing the occurrence of looseness over a long period of time.
- the motor and manual power load required for adjustment can be reduced.
- the frame is a seat frame of an automobile seat
- the moving shaft is a rotating shaft for the frame of the automobile seat
- the outer peripheral surface side of the bearing is fitted and fixed to the seat frame of the automotive seat
- the rotating shaft for the frame is fitted and press-fitted to the inner peripheral surface side of the bearing.
- FIG. 3B is a schematic cross-sectional view taken along 3B-3B shown in FIG. 3A.
- the present invention includes a bearing outer peripheral surface and a bearing inner peripheral surface, and the bearing outer peripheral surface side is fitted and fixed to the frame, and a frame rotation shaft is fitted and press-fitted to the bearing inner peripheral surface side.
- a sliding bearing that rotatably supports a rotating shaft, wherein at least the bearing inner peripheral surface of the bearing outer peripheral surface and the bearing inner peripheral surface is made of a resin layer, and the bearing inner peripheral surface is for a frame.
- a sliding bearing has at least a resin layer that forms the inner peripheral surface of the bearing, the outer peripheral surface side of the bearing is fitted and fixed to the frame, and the rotary shaft for the frame is press fitted into the inner peripheral surface of the bearing.
- the shape which has a collar part etc. may be sufficient and the shape which does not have may be sufficient.
- Polytetrafluoroethylene resin is used as a material for forming the resin layer, but it is a synthetic resin such as polytetrafluoroethylene resin or polyacetal resin containing a filler such as polyimide resin, and oil-impregnated polyacetal resin containing a lubricant. Any metal frame rotating shaft may be used as long as it makes it easy to slide.
- the metal plate forming material is stainless steel plate (SUS), cold rolled steel plate (SPCC), electrogalvanized steel plate.
- SUS stainless steel plate
- SPCC cold rolled steel plate
- electrogalvanized steel plate the metal plate which consists of (SECC), a brass plate, or an aluminum plate is preferable, this invention is not limited to these, You may consist of another metal.
- FIG. 1 is a schematic side view showing an automobile seat having a multilayer sliding bearing which is an embodiment of the present invention
- FIG. 2A is a plan view of the multilayer sliding bearing which is an embodiment of the present invention
- 2B is a side view seen from the reference numeral 2B shown in FIG. 2A
- FIG. 3A is an enlarged schematic view of the uneven shape of the inner peripheral surface seen from the reference numeral 3A shown in FIG.
- FIG. 3A is a schematic cross-sectional view taken along the line 3B-3B shown in FIG. 3A
- FIG. 4A is a schematic view showing a state in which no load is applied from the frame rotation shaft
- FIG. It is a schematic diagram of the state which the load to the perpendicular direction downward is acting.
- an automobile seat VS includes an attachment rail RL, a front link LK1 as a seat frame LK which is an example of a frame installed on both sides of the seat, and a seat frame LK.
- the seat part front / rear frame pivot shaft AX5 as the dynamic axis AX, a seat part ST, a backrest part BR, and a headrest part HR are provided.
- the attachment rail RL is attached to a vehicle chassis (not shown).
- the front link LK1 is installed on the front side of the automobile seat VS, and connects the mounting rail RL and the seat portion ST on the front side.
- Double-layer sliding bearings 100A and 100B are fitted and fixed to both ends of the front link LK1, and the multi-layer sliding bearing 100A on one end side of the front link LK1 is mounted on the front rail for the mounting rail installed on the front side of the mounting rail.
- the dynamic shaft AX1 is press-fitted, and the seat front frame rotation shaft AX2 installed on the front side of the seat is press-fitted into the multilayer plain bearing 100B on the other end side of the front link LK1.
- the rear link LK2 is installed on the rear side of the automobile seat VS, and connects the mounting rail RL and the seat portion ST on the rear side. Similar to the front link LK1, double-layer plain bearings 100C and 100D are fitted and fixed to both ends of the rear link LK2, and the double-layer plain bearing 100C on one end side of the rear link LK2 is attached to the rear side of the mounting rail.
- the installed mounting rail rear frame pivot axis AX3 is press-fitted, and the multi-layer sliding bearing 100D on the other end side of the rear link LK2 is pivoted for the seat rear frame installed on the rear side of the seat section.
- the axis AX4 is press-fitted.
- the seat portion inclination adjustment link LK3 is installed on the front side of the automobile seat VS, connects the seat portion front side portion ST1 and the seat portion ST of the main body, and is configured to freely adjust the inclination of the seat portion front side portion ST1.
- a multi-layer slide bearing 100E is fitted and fixed to one end of the seat tilt adjustment link LK3.
- the multi-layer slide bearing 100E on one end of the seat tilt adjustment link LK3 A pivot shaft AX5 for the front frame in the seat portion installed on the front side is press-fitted.
- the other end side of the seat portion inclination adjustment link LK3 is connected to the swing end side of the seat portion front side portion ST1 so as to be rotatable and slidable, for example.
- the backrest part BR is installed on the rear side of the seat part so as to be rotatable with respect to the seat part ST, that is, reclining.
- the headrest part HR is installed above the seat part.
- at least the front side link LK1, the rear side link LK2, and the seat portion inclination adjustment link LK3 are each oscillated by the user's operation with the power of a motor as an example, and the position / The posture is adjusted.
- the multilayer sliding bearings 100A to 100E will be described. Since the multi-layer plain bearings 100A to 100E, the seat frame LK (LK1 to LK3), and the frame rotation axis AX (AX1 to AX5) are common to each other, the seat frame LK and the frame The rotation axis AX will be described below. As shown in FIGS. 2A to 4B, the multi-layer sliding bearings 100A to 100E each include a cylindrical portion 110 and a flange portion 120, and at least the cylindrical portion 110 of these includes a metal plate 111 that forms the outer peripheral surface of the bearing.
- the bearing inner peripheral surface made of the resin layer 113 has a convex contact portion 113a having a lattice pattern that contacts the frame rotation axis AX and a convex contact without contacting the frame rotation axis AX. It has a concavo-convex shape composed of a plurality of concave non-contact portions 113b that form gaps between the portions 113a.
- the convex contact portion 113a contacts the frame rotation axis AX without any gap. That is, play and uneven wear that tend to occur in the front link LK1, the rear link LK2, and the seat portion inclination adjustment link LK3, which are the seat frame LK of the automobile seat VS, are suppressed. Further, the convex contact portion 113a of the resin layer 113 constituting the bearing inner peripheral surface is easily deformed to the concave non-contact portion side, and the concave non-contact portion 113b of the resin layer 113 constituting the bearing inner peripheral surface is rotated for the frame. The contact area with the dynamic axis AX is reduced to reduce the frictional resistance. That is, the motor and manual power load required for adjusting the vehicle seat position / posture are reduced.
- the multi-layer sliding bearings 100A to 100E of this embodiment are so-called wound bushes in which a strip-shaped multi-layer plate provided with a metal plate 111, a resin layer 113, and a bronze sintered layer 112 is wound into a cylindrical shape. Therefore, the cylindrical portion 110 is formed by attaching the butted ends 114a and 114b. Further, the concavo-convex shape composed of the convex contact portion 113a and the concave non-contact portion 113b is formed by pressing a roller or the like before being wound into a cylindrical shape.
- the convex contact portion 113a is configured to be elastically deformed by press-fitting the frame rotation axis AX.
- the bearing inner peripheral surface made of the resin layer 113 has a lattice pattern made of a convex contact portion 113a and a concave non-contact portion 113b.
- the concave non-contact portion 113b is formed in an inverted quadrangular pyramid shape that expands toward the frame rotation axis AX. That is, the concave non-contact portion 113b is formed in a quadrangular pyramid shape toward the bearing outer peripheral surface.
- the concave non-contact portion 113b is formed in an inverted quadrangular pyramid shape.
- the convex contact portion 113a is formed in a quadrangular pyramid shape, and the lattice is formed by the convex contact portion 113a and the concave non-contact portion 113b.
- the shape pattern may be a pattern opposite to that shown in FIG. 3A.
- the concave and convex shape is not a quadrangular pyramid, but a spherical or hemispherical shape.
- Other shapes such as a triangular pyramid shape, a conical shape, a cylindrical shape, and a prismatic shape (for example, a triangular shape, a square shape, and a polygonal shape) may be used.
- one of the diagonal diagonal lines of the rhombus constituting the lattice pattern is oriented in the same direction as the rotation axis direction X of the frame rotation axis AX.
- the convex contact portion 113a acts not only in the rotation axis direction X but also in the rotation direction R so as to be deformed only in the rotation axis direction X and thus acts between the frame rotation axis AX.
- the pressing force is small.
- the resin layer 113 is laminated on the metal plate 111 through the bronze sintered layer 112 impregnated with a part of the resin layer 113. Thereby, the resin layer 113 becomes difficult to peel off.
- the frame rotation shaft AX is simply press-fitted into the multi-layer sliding bearings 100A to 100E.
- FIG. 4B for example, when a load is applied to the multi-layer slide bearings 100A to 100E when the user is seated on the automobile seat VS and the load is directed downward from the frame rotation axis AX, The convex contact portion 113a is more elastically deformed, but the elastic deformation of the other upper convex contact portion 113a is reduced, that is, the upper convex contact portion 113a tries to return to the state before elastic deformation. There is no gap between 113a and the frame rotation axis AX.
- the front link LK1, the rear link LK2, and the seat inclination adjustment link which are the seat frames LK of the automobile seat VS. There is no play in LK3. Further, even when a load is applied in different directions on the front, rear, left and right sides of the vehicle due to the movement of the vehicle, the front link LK1, the rear link LK2, and the seat inclination adjustment link LK3 which are the seat frames LK of the vehicle seat VS Does not occur.
- the multilayer sliding bearings 100A to 100E have been described for automobile seat frames. However, the multilayer sliding bearings 100A to 100E may be used for hinges other than automobile seats such as automobile doors and trunk doors, You may use for hinge locations other than a motor vehicle.
- the multi-layer sliding bearings 100A to 100E as the sliding bearings according to the embodiment of the present invention thus obtained have a front link LK1 that is a seat frame LK of the automobile seat VS and a rear link with the outer peripheral surface of the bearing as an example of the frame.
- a bearing made of a resin layer 113 is fitted and fixed to the side link LK2 and the seat portion inclination adjustment link LK3, and the frame rotation shaft AX (AX1 to AX5) of the automobile seat VS is fitted and press-fitted to the bearing inner peripheral surface side.
- the plurality of convex contact portions 113a whose inner peripheral surfaces are in contact with the frame rotation shaft AX (AX1 to AX5) and the convex contact portions 113a without contacting the frame rotation shaft AX (AX1 to AX5).
- the front link L which is a seat frame LK of the automobile seat VS, by having a concavo-convex shape including a plurality of concave non-contact portions 113b that form gaps therebetween 1.
- the back link LK2 and the seat tilt adjustment link LK3 avoid the play and reduce the frictional resistance between the multi-layer slide bearings 100A to 100E and the frame rotation shaft AX (AX1 to AX5). It is possible to reduce the power load when adjusting the vehicle seat position / posture manually with a motor.
- the inner peripheral surface of the bearing made of the resin layer 113 has a lattice pattern consisting of a convex contact portion 113a and a concave non-contact portion 113b, and the concave non-contact portion 113b has a frame rotation axis AX (AX1 ⁇ AX).
- the resin layer 113 is laminated on the metal plate 111 through the bronze sintered layer 112 impregnated with a part of the resin layer 113, the generation of backlash is suppressed for a long time and the position of the automobile seat -The effect is enormous, such as reducing the motor and manual power load required for posture adjustment.
- Multi-layer sliding bearing 110 Cylindrical part 111 ... Metal plate 112 ... Bronze sintered layer 113 ... Resin layer (sliding layer) 113a ... Convex contact part 113b ... Concave non-contact part 114a ... Butt end 114b ... Butt end 120 ... Butt part VS ... Car seat RL ... Mounting rail LK ... Seat frame LK1 ... front link LK2 ... rear link LK3 ... seat inclination adjustment link AX ... frame rotation axis AX1 ... mounting rail front frame rotation axis AX2 ... seat Front-side frame rotation axis AX3 ... Mounting rail rear-side frame rotation axis AX4 ...
- Seat rear-side frame rotation axis AX5 ... Seat middle front-side frame rotation axis ST ... Seat part ST1 ... Seat part front side part BR ... Backrest part HR ... Headrest part X ... Turning axis direction R ... Turning direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
- Seats For Vehicles (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
ここで、「錐体状」には、先端を有した錐体だけでなく、先端が切り取られた截頭錐体も含まれるものとする。
ここで、「四角錐状」には、先端を有した四角錐だけでなく、先端が切り取られた截頭四角錐も含まれるものとする。
さらに、樹脂層からなる軸受内周面が、フレーム用回動軸と接触する凸状接触部と、フレーム用回動軸と接触せずに空隙を形成する凹状非接触部とからなる凹凸形状を有していることにより、軸受内周面を構成する樹脂層の凸状接触部が凹状非接触部側に変形しやすくなるとともに軸受内周面を構成する樹脂層の凹状非接触部がフレーム用回動軸との接触面積を小さくして摩擦抵抗を小さくするため、相対的位置・姿勢調整に必要なモータや手動の動力負荷を低減することができる。
さらに、自動車シートの位置・姿勢調整に必要なモータや手動の動力負荷を低減することができる。
また、樹脂層の形成材料としては、ポリテトラフルオロエチレン樹脂を用いるが、ポリイミド樹脂などの充填材を含むポリテトラフルオロエチレン樹脂又はポリアセタール樹脂、潤滑油剤を含有する含油ポリアセタール樹脂などの合成樹脂であって金属製フレーム用回動軸を滑りやすくするものであれば如何なるものであっても構わない。
さらに、例えば、滑り軸受を、樹脂層と金属板とを有した複層滑り軸受にした場合の金属板の形成材料は、ステンレス鋼板(SUS)、冷間圧延鋼板(SPCC)、電気亜鉛めっき鋼板(SECC)、黄銅板又はアルミニウム板からなる金属板が好ましいが、本発明はこれらに限定されず、その他の金属からなっていてもよい。
ここで、図1は、本発明の実施例である複層滑り軸受を有した自動車シートを示す概略側面図であり、図2Aは、本発明の実施例である複層滑り軸受の平面図であり、図2Bは、図2Aに示す符号2Bから視た側面図であり、図3Aは、図2Aに示す符号3Aから視た内周面の凹凸形状の拡大模式図であり、図3Bは、図3Aに示す符号3B-3Bで視た断面模式図であり、図4Aは、フレーム用回動軸から荷重が作用していない状態の模式図であり、図4Bは、フレーム用回動軸から鉛直方向下方への荷重が作用している状態の模式図である。
前側リンクLK1は、自動車シートVSの前側に設置され、取付レールRLと座部STとを前側で連結している。
前側リンクLK1の両端側には、複層滑り軸受100A、100Bが嵌合固定され、前側リンクLK1の一端側の複層滑り軸受100Aには、取付レール前側に設置された取付レール前側フレーム用回動軸AX1が圧入され、前側リンクLK1の他端側の複層滑り軸受100Bには、座部前側に設置された座部前側フレーム用回動軸AX2が圧入されている。
後側リンクLK2の両端側には、前側リンクLK1と同様、複層滑り軸受100C、100Dが嵌合固定され、後側リンクLK2の一端側の複層滑り軸受100Cには、取付レール後側に設置された取付レール後側フレーム用回動軸AX3が圧入され、後側リンクLK2の他端側の複層滑り軸受100Dには、座部後側に設置された座部後側フレーム用回動軸AX4が圧入されている。
座部傾斜調整リンクLK3の一端側には、前側リンクLK1と同様、複層滑り軸受100Eが嵌合固定され、座部傾斜調整リンクLK3の一端側の複層滑り軸受100Eには、座部中前側に設置された座部中前側フレーム用回動軸AX5が圧入されている。
なお、座部傾斜調整リンクLK3の他端側は、座部前側部分ST1の揺動端側と例えば回動および摺動自在に連結されている。
ヘッドレスト部HRは、座部上方に設置されている。
そして、詳細な図示は省略するが、少なくとも前側リンクLK1、後側リンクLK2、および座部傾斜調整リンクLK3は、それぞれ一例であるモータの動力でユーザの操作により揺動し、シート各部の位置・姿勢が調整されるように構成されている。
複層滑り軸受100A~100Eと、シートフレームLK(LK1~LK3)と、フレーム用回動軸AX(AX1~AX5)との関係は、それぞれ共通しているので、単に、シートフレームLK、フレーム用回動軸AXとして以下に説明する。
複層滑り軸受100A~100Eは、図2A乃至図4Bに示すように、円筒部110と、鍔部120とをそれぞれ備え、このうちの少なくとも円筒部110は、軸受外周面を形成する金属板111と、軸受内周面を形成する滑り層としての樹脂層113と、金属板111と樹脂層113との間に形成して樹脂層113の一部を含浸させた多孔質の青銅焼結層112とを有している。
本実施例では、樹脂層113からなる軸受内周面が、フレーム用回動軸AXと接触する格子状パターンの凸状接触部113aと、フレーム用回動軸AXに接触せずに凸状接触部113aの相互間で空隙を形成する複数の凹状非接触部113bとからなる凹凸形状を有している。
つまり、自動車シートVSのシートフレームLKである前側リンクLK1、後側リンクLK2、座部傾斜調整リンクLK3において生じがちなガタや偏摩耗の発生が抑制される。
さらに、軸受内周面を構成する樹脂層113の凸状接触部113aが凹状非接触部側に変形しやすくなるとともに軸受内周面を構成する樹脂層113の凹状非接触部113bがフレーム用回動軸AXとの接触面積を小さくして摩擦抵抗を小さくする。
つまり、自動車シート位置・姿勢調整に必要なモータや手動の動力負荷が低減される。
また、凸状接触部113aと凹状非接触部113bとからなる凹凸形状は、円筒状に巻く前の状態でローラのプレスなどによって形成される。
さらに、凹状非接触部113bが、フレーム用回動軸AXに向かって拡がる逆四角錐状に形成されている。
すなわち、凹状非接触部113bが、軸受外周面に向かって四角錐状に形成されている。
これにより、フレーム用回動軸AXとの間で作用する押圧力により凸状接触部113aが変形する際に凸状接触部113aの変形する方向が近傍の凹状非接触部側になる。
つまり、凸状接触部113aの変形量をある程度調整してガタの発生回避と摩擦抵抗の低減とを両立する。
なお、本実施例では、凹状非接触部113bを逆四角錐状に形成したが、凸状接触部113aを四角錐状に形成し、凸状接触部113aと凹状非接触部113bとからなる格子状パターンを図3Aの構成と逆のパターンにしてもよい。
また、前述した凸状接触部113aの凸形状については、凸状接触部113aの一部が弾性変形するように構成されていれば、凹凸形状を、四角錐状ではなく、球状や半球状、三角錐状、円錐状、円柱状、角柱状(例えば、三角状、四角状、多角状)など他の形状にしてもよい。
これにより、凸状接触部113aが回動軸方向Xだけでなく回動方向Rにも変形して回動軸方向Xのみに変形するときと比べてフレーム用回動軸AXとの間で作用する押圧力が小さくなる。
また、前述したように、樹脂層113が、樹脂層113の一部を含浸させた青銅焼結層112を介して金属板111に積層されている。
これにより、樹脂層113がはがれにくくなる。
また、自動車の移動によってシート前後左右で異なった方向に荷重が作用する場合であっても、自動車シートVSのシートフレームLKである前側リンクLK1、後側リンクLK2、座部傾斜調整リンクLK3においてガタは生じない。
なお、自動車シートフレーム用として複層滑り軸受100A~100Eを説明したが、複層滑り軸受100A~100Eを自動車シート以外の例えば、自動車のドアやトランク扉のヒンジ箇所に用いてもよく、さらに、自動車以外のヒンジ箇所に用いてもよい。
110 ・・・ 円筒部
111 ・・・ 金属板
112 ・・・ 青銅焼結層
113 ・・・ 樹脂層(滑り層)
113a ・・・ 凸状接触部
113b ・・・ 凹状非接触部
114a ・・・ 突き合わせ端
114b ・・・ 突き合わせ端
120 ・・・ 鍔部
VS ・・・ 自動車シート
RL ・・・ 取付レール
LK ・・・ シートフレーム
LK1 ・・・ 前側リンク
LK2 ・・・ 後側リンク
LK3 ・・・ 座部傾斜調整リンク
AX ・・・ フレーム用回動軸
AX1 ・・・ 取付レール前側フレーム用回動軸
AX2 ・・・ 座部前側フレーム用回動軸
AX3 ・・・ 取付レール後側フレーム用回動軸
AX4 ・・・ 座部後側フレーム用回動軸
AX5 ・・・ 座部中前側フレーム用回動軸
ST ・・・ 座部
ST1 ・・・ 座部前側部分
BR ・・・ 背もたれ部
HR ・・・ ヘッドレスト部
X ・・・ 回動軸方向
R ・・・ 回動方向
Claims (7)
- 軸受外周面と軸受内周面とを備え、前記軸受外周面側をフレームに嵌合固定するとともに前記軸受内周面側にフレーム用回動軸を嵌合圧入することによりフレームとフレーム用回動軸とを相互に回動自在に支持する滑り軸受であって、
前記軸受外周面および前記軸受内周面のうちの少なくとも軸受内周面が、樹脂層からなり、前記軸受内周面が、前記フレーム用回動軸と接触する凸状接触部と前記フレーム用回動軸に接触せずに空隙を形成する凹状非接触部とからなる凹凸形状を有している滑り軸受。 - 前記凹状非接触部が、前記軸受外周面に向かって錐体状または球形に形成されている請求項1に記載の滑り軸受。
- 前記凹状非接触部が、前記軸受外周面に向かって四角錐状に形成されている請求項1に記載の滑り軸受。
- 前記軸受内周面の前記凸状接触部と凹状非接触部との配列が、格子状パターンを構成している請求項1乃至請求項3のいずれか1つに記載の滑り軸受。
- 前記格子状パターンが、相互に直交する仮想対角線を有する菱形を複数配列して構成され、前記菱形の相互に直交する仮想対角線の一方がフレーム用回動軸の回動軸方向と同方向に指向している請求項4に記載の滑り軸受。
- 前記軸受外周面が、金属板からなり、
前記樹脂層が、前記樹脂層の一部を含浸させた青銅焼結層を介して前記金属板に積層されている請求項1乃至請求項5のいずれか1つに記載の滑り軸受。 - 前記フレームが、自動車シートのシートフレームであり、
前記フレーム用回動軸が、前記自動車シートのフレーム用回動軸であり、
前記軸受外周面側が、前記自動車シートのシートフレームに嵌合固定されるとともに、前記フレーム用回動軸が、前記軸受内周面側に嵌合圧入されることにより自動車シートのシートフレームとフレーム用回動軸とを相互に回動自在に支持する請求項1乃至請求項6のいずれか1つに記載の滑り軸受。
Priority Applications (4)
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EP16814248.7A EP3296582B1 (en) | 2015-06-23 | 2016-06-16 | Sliding bearing |
CN201680034319.3A CN107709804B (zh) | 2015-06-23 | 2016-06-16 | 滑动轴承 |
US15/579,359 US20180163779A1 (en) | 2015-06-23 | 2016-06-16 | Sliding bearing |
JP2017525280A JP6845133B2 (ja) | 2015-06-23 | 2016-06-16 | 滑り軸受 |
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EP (1) | EP3296582B1 (ja) |
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KR101440256B1 (ko) * | 2011-04-26 | 2014-09-12 | 센주긴조쿠고교 가부시키가이샤 | 미끄럼 이동 부재 |
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2016
- 2016-06-16 WO PCT/JP2016/067871 patent/WO2016208477A1/ja active Application Filing
- 2016-06-16 CN CN201680034319.3A patent/CN107709804B/zh active Active
- 2016-06-16 JP JP2017525280A patent/JP6845133B2/ja active Active
- 2016-06-16 US US15/579,359 patent/US20180163779A1/en not_active Abandoned
- 2016-06-16 EP EP16814248.7A patent/EP3296582B1/en active Active
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Also Published As
Publication number | Publication date |
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CN107709804B (zh) | 2020-09-01 |
JP6845133B2 (ja) | 2021-03-17 |
US20180163779A1 (en) | 2018-06-14 |
CN107709804A (zh) | 2018-02-16 |
EP3296582B1 (en) | 2020-10-28 |
EP3296582A4 (en) | 2019-01-23 |
JPWO2016208477A1 (ja) | 2018-04-12 |
EP3296582A1 (en) | 2018-03-21 |
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