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1. WO2002036989 - LINEAR MOTION DRIVE DEVICE

Publication Number WO/2002/036989
Publication Date 10.05.2002
International Application No. PCT/JP2000/009360
International Filing Date 28.12.2000
IPC
F16H 25/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
25Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
18for conveying or interconverting oscillating or reciprocating motions
20Screw mechanisms
22with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
H02K 7/06 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
06Means for converting reciprocating motion into rotary motion or vice versa
H02K 41/06 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
41Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
06Rolling motors, i.e. motors having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator
CPC
F16H 25/2252
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
25Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
18for conveying or interconverting oscillating or reciprocating motions
20Screw mechanisms
22with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
2247with rollers
2252Planetary rollers between nut and screw
H02K 41/06
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
41Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
06Rolling motors, i.e. having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator; ; Nutating motors, i.e. having the rotor axis inclined with respect to the stator axis and performing a nutational movement as the rotor rolls on the stator
H02K 7/06
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
06Means for converting reciprocating motion into rotary motion or vice versa
Y10T 74/18568
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
18Mechanical movements
18568Reciprocating or oscillating to or from alternating rotary
Y10T 74/19791
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
19Gearing
19642Directly cooperating gears
19698Spiral
19702Screw and nut
19744Rolling element engaging thread
19781Non-recirculating rolling elements
19791Cylindrical or quasi-cylindrical roller element [e.g., inclined roller, etc.]
Applicants
  • PUBOT GIKEN CO., LTD. [JP]/[JP] (AllExceptUS)
  • HIGUCHI, Yasuo [JP]/[JP] (UsOnly)
  • HIRAYAMA, Tatsurou [JP]/[JP] (UsOnly)
Inventors
  • HIGUCHI, Yasuo
  • HIRAYAMA, Tatsurou
Agents
  • IIDA, Akio
Priority Data
2000/36929127.10.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LINEAR MOTION DRIVE DEVICE
(FR) DISPOSITIF DE COMMANDE DE MOUVEMENT LINEAIRE
Abstract
(EN)
A linear motion drive device, wherein a shaft (6) is inserted closely into a cylindrical body (4) coaxially with each other, a plurality of cylindrical coil rollers (3a) are press-fitted rollingly between the cylindrical body and the shaft at a specified inclination angle relative to an axial direction of the cylindrical body and the shaft, the cylindrical coil roller (3a) is brought into contact with an area between the outer peripheral surface of the shaft and the inner peripheral surface of the cylindrical body with a pressing force, the cylindrical body or the shaft is rotated to linearly move the shaft or cylindrical body in axial direction, and the pressing forces of both inner and outer surfaces of the cylindrical coil rollers (3a) against the cylindrical body (4) and the shaft are made higher near the end part of the cylindrical body (4) than at the intermediate part thereof, or made lower near the end part than at the intermediate part, whereby the cylindrical coil roller (3a) has the pressing force thereof gradually increased or decreased toward the both ends to prevent the slip of the cylindrical coil rollers from being accumulated, namely, because the cylindrical coil rollers (3a) are slipped reversely when the stopping position of the cylindrical coil rollers (3a) is deviated excessively to one end part side, the axial stopping position of the cylindrical coil rollers (3a) can be maintained within an allowable range.
(FR)
L'invention concerne un dispositif de commande de mouvement linéaire. Une tige (6) est coaxialement et étroitement insérée dans un corps cylindrique (4). Plusieurs enrouleurs cylindriques (3a) sont emmanchés à force de manière pivotante entre le corps cylindrique et la tige à une inclinaison spécifique par rapport à une direction axiale du corps cylindrique et de la tige. L'enrouleur cylindrique (3a) est mis en contact avec une zone située entre la surface périphérique externe de la tige et la surface périphérique interne du corps cylindrique par une force de pression. Le corps cylindrique ou la tige tournent pour déplacer linéairement la tige ou le corps cylindrique dans la direction axiale, et les forces de pression des surfaces interne et externe des enrouleurs cylindriques (3a) sur le corps cylindrique (4) et la tige sont exercées plus haut, près de la partie terminale du corps cylindrique (4), qu'au niveau de sa partie intermédiaire, ou plus bas, près de l'extrémité qu'au niveau de sa partie intermédiaire. Ainsi l'enrouleur cylindrique (3a) a une force de pression qui augmente ou diminue progressivement vers les deux extrémités pour prévenir le glissement des enrouleurs cylindriques et leur accumulation, notamment puisque les enrouleurs cylindriques (3a) glissent inversement lorsque la position d'arrêt des enrouleurs cylindriques (3a) dévie excessivement vers un côté de partie terminale, la position d'arrêt axial des enrouleurs cylindriques (3a) pouvant être maintenue dans les limites d'une plage admissible.
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