WO2010044537A2 - 스텝 액츄에이터 - Google Patents
스텝 액츄에이터 Download PDFInfo
- Publication number
- WO2010044537A2 WO2010044537A2 PCT/KR2009/004344 KR2009004344W WO2010044537A2 WO 2010044537 A2 WO2010044537 A2 WO 2010044537A2 KR 2009004344 W KR2009004344 W KR 2009004344W WO 2010044537 A2 WO2010044537 A2 WO 2010044537A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- nut member
- coupled
- housing
- magnet
- Prior art date
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Classifications
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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
- F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
- F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission member
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/02—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
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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
- F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
- F16H29/02—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
- H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
- H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
- F16H2025/2078—Coaxial drive motors the rotor being integrated with the nut or screw body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1503—Rotary to intermittent unidirectional motion
- Y10T74/1508—Rotary crank or eccentric drive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
- Y10T74/18664—Shaft moves through rotary drive means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
- Y10T74/19698—Spiral
- Y10T74/19702—Screw and nut
Definitions
- Embodiments relate to a step actuator.
- the step actuator has a rotor and a stator, and linearly drives an axis according to the rotation of the rotor.
- a step actuator may be connected to a member for driving a reflector of an automotive headlight system and used to change the lighting direction.
- the step actuator can be applied to a variety of electrical and mechanical devices that require linear motion by converting the rotational motion of the rotor into linear motion.
- An embodiment provides a step actuator of a new structure.
- the embodiment provides a step actuator including a rotor of a new structure.
- the embodiment provides a step actuator in which the rotor and bearing are rigidly coupled.
- the step actuator includes a housing; A stator disposed inside the housing; A rotor including a magnet disposed radially inward of the stator and a nut member inserted into and coupled to the magnet and protruding through one side of the housing; A bearing rotatably supporting the nut member; A screw member coupled to the nut member and moving linearly as the rotor rotates; And a mounting member supported on one side of the housing and supported such that the screw member is linearly movable, wherein the nut member is coupled to an end passing through the bearing and extending from the end to be in contact with the bearing. Contains wealth.
- the step actuator includes a housing; A stator disposed inside the housing; A magnet disposed radially inward of the stator; A nut member inserted into and coupled to the magnet and protruding through one side of the housing; A bearing rotatably supporting the nut member; A fastening member coupled to the nut member with the bearing interposed therebetween; A screw member coupled to the nut member and moving linearly as the nut member rotates; And a mounting member supported on one side of the housing and supported to linearly move the screw member.
- the step actuator includes a housing; A stator disposed inside the housing; A rotor including a magnet disposed radially inward of the stator and a nut member inserted into and coupled to the magnet and protruding through one side of the housing; A bearing disposed outside the housing to rotatably support the nut member; A bearing cover coupled to the housing to support the bearing; A screw member coupled to the nut member and moving linearly as the rotor rotates; And a mounting member coupled to the bearing cover to support the screw member to be linearly movable.
- Embodiments can provide a step actuator of a new structure.
- Embodiments can provide a step actuator comprising a rotor of a new structure.
- Embodiments may provide a step actuator in which the rotor and bearing are rigidly coupled.
- FIG. 1 is a perspective view of a step actuator according to an embodiment.
- FIG. 2 is a sectional view of a step actuator according to an embodiment
- FIG. 3 and 4 are exploded perspective views of the step actuator according to the embodiment.
- FIG 5 shows a second housing supporting a bearing in a first direction in a step actuator according to an embodiment.
- FIG. 6 to 10 illustrate a first embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- 11 to 14 illustrate a second embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- 15 to 17 illustrate a third embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- FIGS. 18-20 illustrate a fourth embodiment of a rotor and bearing engagement structure in a step actuator according to an embodiment.
- 21 to 23 illustrate a fifth embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- 24 is a view for explaining that the elastic member is used for the firm coupling of the rotor and the bearing in the step actuator according to the embodiment.
- 25 to 29 are views for explaining the structure and the coupling relationship between the bearing cover and the mounting member.
- each component is exaggerated, omitted, or schematically illustrated for convenience and clarity of description.
- the size of each component does not necessarily reflect the actual size.
- FIG. 1 is a perspective view of a step actuator according to an embodiment
- FIG. 2 is a cross-sectional view of a step actuator according to an embodiment
- FIGS. 3 and 4 are exploded perspective views of a step actuator according to an embodiment.
- the step actuator includes a stator, a rotor that is rotated by interaction with the stator, and the rotor is coupled to the rotor to rotate forward and reverse. It includes a screw member 10 for linear reciprocating motion in the first direction and the second direction as it is rotated, and a joint 70 coupled to the screw member 10.
- the stator includes first and second bobbins 130 and 140 and first and second yokes 150 and 160 disposed between the first housing 110 and the second housing 120.
- the rotor includes a magnet 30 disposed inside the stator and rotated by interacting with the stator, and a nut member 20 coupled to the magnet 30.
- the screw member 10 and the nut member 20 are coupled in a bolt and nut relationship. Therefore, when the nut member 20 is rotated, the screw member 10 is linearly moved.
- first bobbin 130 and the second bobbin 140 are disposed in an internal space between the first housing 110 and the second housing 120, and the first bobbin 130 is disposed.
- first yoke 150 and the second yoke 160 are disposed between the second bobbin 140 and the second bobbin 140.
- the magnet 30, the nut member 20, and the screw member 10 are disposed in the circumferential directions of the first bobbin 130 and the second bobbin 140.
- a bearing 40, a bearing cover 50, and a mounting member 60 are disposed at one side of the second housing 120.
- the screw member 10 is linear in a first direction along an axial direction of the screw member 10 and in a second direction opposite to the first direction as the step actuator according to the embodiment is operated. Do a reciprocating motion.
- the screw member 10 is supported by the first direction side is inserted into the protrusion tube 132 of the first bobbin 130 and the second direction side penetrates the protrusion 61 of the mounting member 60. Is supported.
- the joint 70 is coupled to the second direction side end of the screw member 10.
- a thread 11 is formed on the first outer side surface of the screw member 10, and a stopper 12 is formed between the screw 11 and the end portion of the second direction side.
- the thread 11 of the screw member 10 is coupled to the thread 21 formed on the inner circumferential surface of the nut member 20.
- the screw member 10 is moved in the first direction and the second direction.
- the stopper 12 limits the range of movement of the screw member 10 in the second direction. As the screw member 10 is moved in the second direction, the stopper 12 is caught by the protrusion 61 of the mounting member 60 so that the screw member 10 is no longer moved in the second direction. .
- a blocking part 133 is formed at an end of the first direction side of the protruding tube 132 of the first bobbin 130 to limit the movement range of the screw member 10 in the first direction.
- Limiting the range of movement of the screw member 10 in the second direction is the diameter of the through-hole 62 of the protrusion 61 formed in the mounting member 60 screw thread 11 of the screw member 10 It may be achieved by forming small so that it does not pass, and likewise limiting the range of movement in the first direction of the screw member 10 is the diameter of the end of the first direction side of the protruding pipe 132 the screw member It may be achieved by forming small so that the thread 11 of (10) does not pass. Therefore, the blocking part 133 and the stopper 12 may be selectively formed according to the design.
- the screw member 10 is installed to be linearly movable in the first direction and the second direction through the mounting member 60, it is limited to rotate about the axis. That is, the screw member 10 is limited to the rotation by the protrusion 61 of the mounting member 60.
- the second direction side of the screw member 10 is formed by cutting in a D-shape, the through hole 62 of the mounting member 60 and the second direction side cross section of the screw member 10 and the It may be formed in a corresponding shape.
- the screw member 10 since the screw member 10 cannot be rotated, the screw member 10 is linearly moved in the first direction and the second direction when the nut member 20 coupled to the screw member 10 is rotated. do.
- the joint 70 is coupled to the second directional end of the screw member 10.
- the joint 70 may be coupled to a variety of mechanisms for transmitting the force by the linear motion of the screw member 10.
- the apparatus may be variously selected according to the apparatus to which the step actuator according to the embodiment is applied.
- a buried groove 13 is formed in the second direction side of the screw member 10, and a part of the joint 70 is buried in the buried groove 13. Therefore, the screw member 10 and the joint 70 may be firmly coupled along the axial direction.
- the buried groove 13 may be formed by performing a knurling process or a tapping process on the screw member 10.
- the joint 70 has a joint hole 71 formed therein, and the screw member 10 having the buried groove 13 formed therein is inserted into the joint hole 71.
- the screw member 10 is inserted into the joint hole 71, when heat or ultrasonic wave is applied to the joint 70, the joint 70 is melted and the melted portion is inserted into the buried groove 13. Inflow. In this case, a force may be applied from the outside so that the molten portion of the joint 70 flows into the buried groove 13 well.
- the joint 70 may be hardened to firmly couple the screw member 10 and the joint 70 to each other.
- the nut member 20 is inserted into and coupled to the magnet 30, and the second direction side end 22 penetrates through the magnet 30 to protrude in the second direction.
- the outer peripheral surface of the nut member 20 is formed with a protrusion 23 extending in the axial direction, the groove 31 of the shape corresponding to the protrusion 23 is coupled to the magnet 30 formed on the inner peripheral surface.
- the nut member 20 and the magnet 30 are partially overlapped in the circumferential direction by the protrusion 23 and the groove 31, and are alternately arranged. Therefore, the force acting in the circumferential direction by the rotation of the magnet 30 is transmitted to the nut member 20 and the nut member 20 is rotated together as the magnet 30 is rotated.
- the protrusion 23 and the groove 31 may be formed in a curved surface, in which case the groove 31 of the magnet 30 may be more easily processed.
- the second directional end 22 of the nut member 20 is engaged with the inner ring of the bearing 40.
- the nut member 20 may be freely rotated while being supported by the bearing 40.
- the nut member 20 has a screw thread 21 formed on the inner circumferential surface of the central portion thereof and is coupled to the screw thread 11 of the screw member 10.
- the nut member 20 is rotatably supported by the inner circumferential surface of the first direction in combination with the protruding tube 132 of the first bobbin 130. That is, the first direction side inner circumferential surface of the nut member 20 is in contact with and supported by the outer circumferential surface of the protruding tube 132.
- the magnet 30 may be formed of a permanent magnet in which the N side and the S pole are alternately magnetized at equal intervals in the circumferential direction. As described above, the nut member 20 is inserted into and coupled to the magnet 30, so that the nut member 20 also rotates as the magnet 30 is rotated.
- the second direction side end portion 32 of the magnet 30 may protrude in a second direction to contact the inner ring of the bearing 40.
- the magnet 30 may rotate smoothly without contact with the outer ring of the bearing 40 by the second direction side end 32 of the magnet 30.
- the first bobbin 130 on which the first coil 131 is wound and the second bobbin 140 on which the second coil 141 is wound are disposed outside the circumferential direction of the magnet 30.
- the first yoke 150 and the second yoke 160 are disposed between the first bobbin 130 and the second bobbin 140.
- the first bobbin 130 is formed with a first coil winding part 134 in which the first coil 131 is wound in a circumferential direction, and includes a first terminal part for electrically connecting the first coil 131 ( 135) is formed.
- the second bobbin 140 is formed with a second coil winding 144 in which the second coil 141 is wound in a circumferential direction, and a second for electrically connecting the second coil 141.
- the terminal portion 145 is formed.
- the first bobbin 130 is provided with the protruding tube 132 through which the screw member 10 is inserted and supported, and the third tooth 111 of the first housing 110 is inserted therein. Slits 136 are formed.
- the first bobbin 130 faces the magnet 30 and the nut member 20 in a first direction, and the first bobbin 130 is provided with a recessed portion 134 recessed in the first direction to form the magnet. As the 30 and the nut member 20 flow in the first direction and the second direction, the friction force that may be generated between the first bobbin 130 and the magnet 30 and the nut member 20 may be reduced. Can be.
- the first yoke 150 protrudes toward the first housing 110 from an inner circumference of the ring-shaped first body portion 151 and the first body portion 151 and the first bobbin 130.
- a first tooth 152 disposed between the magnets 30 and a first ground terminal 153 for grounding the first body 151 are included.
- the second yoke 160 protrudes toward the second housing 120 from an inner circumference of the ring-shaped second body portion 161 and the second body portion 161 and the second bobbin 140.
- a second tooth 162 disposed between the magnet 30 and a second ground terminal portion 163 for grounding the second body portion 161.
- the third tooth 111 protruding toward the second housing 120 is formed in the first housing 110 to penetrate the slit 136 of the first bobbin 152 to pass through the first bobbin. It is disposed between the 130 and the magnet 30.
- the third tooth 111 and the first tooth 152 are alternately disposed along the outer circumference of the magnet 30.
- the first housing 110 is formed with a first rim 112 protruding radially inward from the cylindrical body, and the third tooth 111 is in a second direction from the first rim 112. Extends.
- One side of the first bobbin 130 is inserted into and coupled to the first opening 113 formed by the first rim 112.
- a fourth tooth 121 protruding in the direction of the first housing 110 is formed in the second housing 120 and disposed between the second bobbin 140 and the magnet 30.
- the fourth tooth 121 and the second tooth 162 are alternately disposed along the outer circumference of the magnet 30.
- the second housing 120 is formed with a second rim portion 122 protruding radially inward from the cylindrical body, and the fourth tooth 121 extends in the first direction from the second rim portion 122. do.
- the first housing 110 is formed with a first cut portion 114 is a part of the first rim 112 is cut
- the second housing 120 is a part of the second rim 122 is cut
- the second cut portion 124 is formed.
- the first cut part 114 and the second cut part 124 may include a first terminal part 135 formed on the first bobbin 130, a first ground terminal part 153 formed on the first yoke 150,
- the second ground terminal part 163 formed on the second yoke 160 and the second terminal part 145 formed on the second bobbin 140 may form an opening to protrude outward.
- the bearing 40 is disposed on the second direction side of the second housing 120, and the bearing cover 50 supporting the bearing 40 is installed. That is, the bearing cover 50 is coupled to the second housing 120 to constrain the bearing 40.
- the second housing 120 and the bearing cover 50 may be coupled by spot welding or laser welding.
- the inner ring of the bearing 40 is coupled to and supported by the second direction side end 22 of the nut member 20.
- the bearing 40 is limited in the first direction by the second rim portion 122 of the second housing 120 and is moved in the second direction by the bearing cover 50. Movement is restricted.
- the diameter of the second opening 123 formed by the second rim portion 122 is larger than the diameter of the magnet 30 and smaller than the diameter of the bearing 40. Therefore, it is possible to prevent the friction force from occurring between the magnet 30 and the second housing 120, it is possible to limit the movement of the bearing 40 in the first direction.
- FIG. 5 is a view showing that the second housing supports the bearing in the first direction in the step actuator according to the embodiment.
- the nut member 20 is inserted into the magnet 30 and engaged with the inner ring of the bearing 40.
- the bearing cover 50 is coupled to the second housing 120 in a second direction, and the mounting member 60 is coupled to the bearing cover 50 in a second direction.
- the bearing 40 is installed between the bearing cover 50 and the second housing 120, which is in the first direction by the second rim 122 of the second housing 120. Movement is restricted.
- the bearing 40 is partially exposed between the second rim 122 and the magnet 30, and an unexposed portion of the bearing 40 is exposed to the second rim 122. This is a portion where movement in the first direction is limited.
- 6 to 24 show other embodiments of the coupling structure of the rotor and the bearing in the step actuator according to the embodiment. 6 to 24, parts overlapping with the embodiments described with reference to FIGS. 1 to 5 will be omitted and only the coupling structure of the rotor and the bearing will be described.
- the fastening part may be embodied in the form of a bearing fastening part 22a or a hook 22c
- the fastening member may be embodied in the form of a stop ring 25, a nut member stopper 26, and a bush 27. .
- 6 to 10 are diagrams illustrating a first embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- the second direction side end portion 22 of the nut member 20 penetrates through the bearing 40 and protrudes in the second direction.
- the outer circumference of the second direction side end 22 of the nut member 20 is engaged in contact with the inner ring of the bearing 40.
- the protruding portion of the second directional end portion 22 of the nut member 20 is subjected to swaging after applying heat or ultrasonic waves to the bearing 40.
- a bearing fastening portion 22a is formed in contact with the inner ring in contact with the second direction.
- the bearing 40, the magnet 30 and the nut member 20 can be firmly coupled, the bearing 40 is supported so that the magnet 30 and the nut member 20 can be rotated smoothly can do.
- 11 to 14 illustrate a second embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- a coupling groove 22b formed along the circumferential direction is formed at the end portion 22 of the second direction side of the nut member 20.
- the stop ring 25 is disposed on the second direction side of the bearing 40.
- the second direction side end 22 of the nut member 20 penetrates the bearing 40 and protrudes in the second direction side.
- the coupling groove 22b of the nut member 20 is exposed to the second direction side.
- the stop ring 25 is inserted into the coupling groove 22b to restrain the bearing 40 from the second direction side.
- the stop ring 25 is coupled to the engaging groove 22b and in contact with the inner ring of the bearing 40 in the second direction.
- the bearing 40, the magnet 30, and the nut member 20 may be firmly coupled by the coupling groove 22b and the stop ring 25, and the bearing 40 may be connected to the magnet 30. ) And the nut member 20 can be smoothly rotated.
- 15 to 17 are diagrams illustrating a third embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- a nut member stopper 26 is disposed at the second direction side of the bearing 40 and engaged with the nut member 22 at the second direction side.
- the nut member stopper 26 is in contact with the inner ring of the bearing 40 in the second direction and a part of the nut member stopper 26 is inserted into the nut member 22.
- the outer circumferential surface of the nut member stopper 26 is engaged in contact with the inner circumferential surface of the nut member 22.
- a through hole is formed in the center of the nut member stopper 26 so that the screw member 10 may pass through.
- the bearing 40, the magnet 30, and the nut member 20 may be firmly coupled by the nut member stopper 26, and the bearing 40 may include the magnet 30 and the nut member ( 20) can be supported to rotate smoothly.
- FIGS. 18 to 20 are diagrams illustrating a fourth embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- a hook 22c is formed at the end portion 22 of the second direction side of the nut member 20.
- the hook 22c penetrates through the bearing 40 and is in contact with the second direction side of the bearing 40. That is, the hook 22c of the nut member 20 is coupled to the inner ring of the bearing 40.
- the bearing 40, the magnet 30, and the nut member 20 may be firmly coupled by the hook 22c formed on the nut member 20, and the bearing 40 may be connected to the magnet 30. ) And the nut member 20 can be smoothly rotated.
- 21 to 23 illustrate a fifth embodiment of the rotor and bearing coupling structure in the step actuator according to the embodiment.
- a coupling groove 22b formed along the circumferential direction is formed at the end portion 22 of the second direction side of the nut member 20.
- a ring-shaped bush 27 is disposed at the second direction side of the bearing 40.
- the second direction side end 22 of the nut member 20 penetrates the bearing 40 and protrudes in the second direction side.
- the coupling groove 22b of the nut member 20 is exposed to the second direction side.
- the coupling groove 22b and the bush 27 are firmly coupled to each other. That is, the bush 27 is coupled to the coupling groove 22b and in contact with the inner ring of the bearing 40 in the second direction.
- the bearing 40, the magnet 30, and the nut member 20 may be firmly coupled by the coupling groove 22b and the bush 27, and the bearing 40 may be the magnet 30. And the nut member 20 may be smoothly rotated.
- 24 is a view for explaining that the elastic member is used for the firm coupling of the rotor and the bearing in the step actuator according to the embodiment.
- first, second, third and fourth elastic members 28a, 28b, 28c, and 28d illustrates the use of the first, second, third and fourth elastic members 28a, 28b, 28c, and 28d in the coupling structure of the rotor and the bearing in the second embodiment described with reference to FIGS. 11 to 14.
- first, second, third and fourth elastic members 28a, 28b, 28c and 28d may be applied to other embodiments.
- a first elastic member 28a may be disposed between the stop ring 25 and the bearing 40, and a second elastic member 28b may be disposed between the bearing 40 and the magnet 30. ) May be disposed, and the third elastic member 28c and the fourth elastic member 28d may be disposed between the magnet 30 and the nut member 20.
- the first, second, third, and fourth elastic members 28a, 28b, 28c, and 28d may be applied to both the coupling structure of the rotor and the bearing. That is, the position and number at which the elastic members are disposed are optional.
- the first, second, third, and fourth elastic members 28a, 28b, 28c, and 28d provide elastic force in the axial direction. Therefore, the bearing 40, the magnet 30 and the nut member 20 may be more firmly coupled by the first, second, third and fourth elastic members 28a, 28b, 28c, and 28d.
- the bearing 40 may support the magnet 30 and the nut member 20 to be smoothly rotated.
- 25 to 29 are views for explaining the structure and the coupling relationship between the bearing cover and the mounting member.
- the bearing cover 50 includes a coupling frame 51, a coupling pipe 52, a locking frame 53, a support piece 55, an anti-rotation protrusion 56, and a first contact piece 57. ).
- the coupling frame 51 is formed in a ring shape having a predetermined width and is coupled to the second rim portion 122 of the second housing 120.
- the coupling frame 51 and the second rim portion 122 may be coupled by welding.
- the coupling pipe 52 extends in the second direction from the inner circumference of the coupling frame 51 and has an inner circumferential surface in contact with the outer ring of the bearing 40.
- the hook frame 53 is formed to protrude radially inward from the second direction side end of the coupling pipe 52, and contacts the outer ring of the bearing (40).
- the latch frame 53 restricts the bearing 40 from moving in the second direction.
- the support piece 55 extends in the second direction from the outer circumference of the coupling frame 51 and is provided with a plurality of spaced apart from each other. At this time, the imaginary line connecting the support piece 55 is approximately circular.
- the anti-rotation protrusion 56 extends radially outward from the support piece 55, and a first bending piece 56a and a second bending piece 56b are formed in the circumferential direction, respectively.
- the first bending piece 56a and the second bending piece 56b are mounted to the mounting member 60 so that the mounting member 60 does not rotate in the circumferential direction when the mounting member 60 is coupled to the bearing cover 50. It is supported by the locking piece 64 and the locking protrusion 65 of 60, respectively.
- the first bending piece 56a and the second bending piece 56b increase the contact area of the anti-rotation protrusion 56 so that the anti-rotation protrusion 56 stops the locking piece 64 and the locking protrusion 65. To be firmly supported.
- the first contact piece 57 extends radially outward from the second direction side end portion of the support piece 55, and contacts the second contact piece 67 of the mounting member 60 to mount the mounting piece.
- the member 60 is prevented from flowing in the axial direction.
- the mounting member 60 includes a protrusion 61, a housing tube 63, a locking piece 64, a locking protrusion 65, an extension frame 66, and a second contact piece 67.
- the protrusion 61 and the receiving tube 63 form a body of the mounting member 60.
- the protrusion 61 supports the screw member 10 so as to be movable in the first direction and the second direction, and the housing tube 63 has the bearing 40 and the bearing cover 50 disposed therein.
- Provide space for The protrusion 61 is formed to protrude in a second direction from the accommodation tube 63.
- the accommodating tube 63 has a first direction end portion inserted between the support piece 55 of the bearing cover 50 and the coupling tube 52. Therefore, the outer circumference of the first direction side end portion of the housing tube 63 is in contact with the inner circumference of the support piece 55, and the inner circumference of the first direction side end of the housing tube 63 is the coupling tube 52. Contact with the outer periphery of the
- the extension frame 66 extends radially outward from the outer circumferential surface of the housing tube 63 to form a ring shape, and the anti-rotation protrusion 56 and the first contact piece 57 of the bearing cover 50 are formed. To face.
- the locking pieces 64 extend in the first direction from the outer circumference of the extension frame 66 and are provided with a plurality of spaced apart from each other.
- the inner circumferential surface of the engaging piece 64 faces the outer circumferential surface of the coupling frame 51 of the bearing cover 50.
- the mounting member 60 When the mounting member 60 is rotated in the clockwise direction while the locking piece 64 is positioned between the support piece 55 and the support piece 55 of the bearing cover 50, the first bending piece 56a is caught by the circumferential end of the engaging piece 64. Thus, the mounting member 60 no longer rotates clockwise.
- the locking protrusion 65 is formed on the extension frame 66 between the locking piece 64 and the locking piece 64 and has elasticity.
- the locking protrusion 65 is formed in a cantilever shape, and the free end side contacts the second bending piece 56b of the anti-rotation protrusion 56.
- the locking projection 65 is located between the support piece 55 and the support piece 55 adjacent to each other, and as the mounting member 60 rotates in the clockwise direction, the anti-rotation protrusion 56 ) Is caught by the second bending piece 56b of the anti-rotation protrusion 56. Then, the mounting member 60 is no longer rotated counterclockwise.
- the free end side of the locking protrusion 65 is formed to be inclined so that the locking protrusion 65 can smoothly cross the anti-rotation protrusion 56.
- the second contact piece 67 extends radially inward from the first direction end portion of the locking piece 64 and is spaced apart from the extension frame 66 by a predetermined distance.
- the first contact piece 57 is inserted between the second contact piece 67 and the extension frame 66.
- the mounting member 60 is located in the second direction of the bearing cover 50. Therefore, when the mounting member 60 is coupled to the bearing cover 50, the second contact piece 67 integrally formed with the mounting member 60 may include the first integrally formed with the bearing cover 50. Since it is located in the first direction of the contact piece 57, the mounting member 60 does not flow in the first direction and the second direction.
- an embossing 57a is formed on a surface of the first contact piece 57 that is in contact with the second contact piece 67. .
- the embossing 57a is connected to the second contact piece 67 when the mounting member 60 is rotated so that the locking piece 64 and the locking protrusion 65 are caught by the rotation preventing protrusion 56, respectively.
- the second contact piece 67 is supported in the first direction.
- a method of coupling the mounting member 60 to the bearing cover 50 will be described with reference to FIGS. 26 to 29.
- the mounting member 60 is inserted between the support piece 55 of the bearing cover 50 and the coupling tube 52 while inserting the housing tube 63 of the mounting member 60.
- the locking piece 64 and the locking projection 65 are positioned between the rotation preventing projection 56 and the rotation preventing projection 56 of the bearing cover 50.
- the first contact piece 57 and the second contact piece 67 overlap each other in the axial direction.
- the second contact piece 67 is in contact.
- the embossing 57a is formed in the first contact piece 57, the embossing 57a is in close contact with the second contact piece 67 so that the second contact piece 67 is in the first direction.
- the bearing cover 50 and the mounting member 60 are firmly coupled without flowing in the axial direction.
- the free end side of the locking protrusion 165 may be lifted in the second direction, and then the mounting member 60 may be rotated counterclockwise.
- the step actuator according to the embodiment restrains the position of the bearing 40 and supports and supports the linear movement of the screw member 10 and the bearing cover 50 for supporting the mounting member 60.
- a mounting member 60 a mounting member 60. Therefore, the design of the mounting member 60 can be freely modified, and can be easily coupled with the bearing cover 50.
- an electric field is generated when the power is applied to the first terminal 135 and the second terminal 145, respectively, and the magnet 30 is rotated in the forward and reverse directions.
- Embodiments can be applied to step actuators.
Abstract
Description
Claims (15)
- 하우징;상기 하우징 내부에 배치되는 스테이터;상기 스테이터의 반경방향 내측에 배치되는 마그네트와, 상기 마그네트의 내부에 삽입되어 결합되고 상기 하우징의 일측을 관통하여 돌출되는 너트 부재를 포함하는 로터;상기 너트 부재를 회전 가능하게 지지하는 베어링;상기 너트 부재에 결합되어 상기 로터가 회전함에 따라 선형으로 움직이는 스크류 부재; 및상기 하우징의 일측에 지지되고 상기 스크류 부재가 선형으로 이동 가능하도록 지지되는 마운팅 부재를 포함하고,상기 너트 부재는 상기 베어링을 관통하는 단부와, 상기 단부에서 연장되어 상기 베어링과 접촉하여 결합되는 체결부를 포함하는 스텝 액츄에이터.
- 제 1항에 있어서,상기 너트 부재의 단부의 외주면은 상기 베어링 내륜의 내주면과 결합되고, 상기 체결부는 상기 베어링 내륜의 측면과 결합되는 스텝 액츄에이터.
- 제 1항에 있어서,상기 체결부는 상기 너트 부재의 단부에 열 또는 초음파를 가한 후 스웨이징 공정을 통해 상기 베어링과 결합되는 베어링 체결부인 스텝 액츄에이터.
- 제 1항에 있어서,상기 체결부는 상기 너트 부재의 단부에 형성된 후크를 포함하는 스텝 액츄에이터.
- 제 4항에 있어서,상기 후크와 베어링 사이, 상기 베어링과 마그네트 사이, 상기 마그네트와 너트 부재 사이 중 적어도 한 위치에 탄성 부재가 배치되는 스텝 액츄에이터.
- 하우징;상기 하우징 내부에 배치되는 스테이터;상기 스테이터의 반경방향 내측에 배치되는 마그네트;상기 마그네트의 내부에 삽입되어 결합되고 상기 하우징의 일측을 관통하여 돌출되는 너트 부재;상기 너트 부재를 회전 가능하게 지지하는 베어링;상기 베어링을 사이에 두고 상기 너트 부재와 결합되는 체결부재;상기 너트 부재에 결합되어 상기 너트 부재가 회전함에 따라 선형으로 움직이는 스크류 부재; 및상기 하우징의 일측에 지지되고 상기 스크류 부재가 선형으로 이동 가능하도록 지지되는 마운팅 부재를 포함하는 스텝 액츄에이터.
- 제 6항에 있어서,상기 너트 부재는 상기 베어링을 관통하는 단부와, 상기 단부에 형성된 결합 홈을 포함하고,상기 체결부재는 상기 결합 홈에 결합되고 상기 베어링의 내륜과 접촉하는 스텝 액츄에이터.
- 제 6항에 있어서,상기 체결부재는 상기 결합 홈에 끼워지는 멈춤 링인 스텝 액츄에이터.
- 제 6항에 있어서,상기 체결부재는 상기 결합 홈에 결합되어 코킹 공정에 의해 고정되는 부쉬인 스텝 액츄에이터.
- 제 6항에 있어서,상기 체결부재와 베어링 사이, 상기 베어링과 마그네트 사이, 상기 마그네트와 너트 부재 사이 중 적어도 한 위치에 탄성 부재가 배치되는 스텝 액츄에이터.
- 제 6항에 있어서,상기 체결부재는 상기 베어링의 내륜과 접촉하고 상기 너트 부재의 내부에 삽입되어 결합되는 너트 부재 스토퍼인 스텝 액츄에이터.
- 하우징;상기 하우징 내부에 배치되는 스테이터;상기 스테이터의 반경방향 내측에 배치되는 마그네트와, 상기 마그네트의 내부에 삽입되어 결합되고 상기 하우징의 일측을 관통하여 돌출되는 너트 부재를 포함하는 로터;상기 하우징의 외측에 배치되어 상기 너트 부재를 회전 가능하게 지지하는 베어링;상기 하우징과 결합되어 상기 베어링을 지지하는 베어링 커버;상기 너트 부재에 결합되어 상기 로터가 회전함에 따라 선형으로 움직이는 스크류 부재; 및상기 베어링 커버와 결합되어 상기 스크류 부재가 선형으로 이동 가능하도록 지지하는 마운팅 부재를 포함하는 스텝 액츄에이터.
- 제 12항에 있어서,상기 너트 부재는 상기 베어링과 결합되는 체결부를 포함하는 스텝 액츄에이터.
- 제 13항에 있어서,상기 체결부는 상기 베어링과 상기 스크류 부재의 축 방향에 평행한 방향을 따라 오버랩되는 스텝 액츄에이터.
- 제 12항에 있어서,상기 베어링의 외륜은 상기 베어링 커버와 결합되고 상기 베어링의 내륜은 상기 너트 부재와 결합되는 스텝 액츄에이터.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801500172A CN102246400B (zh) | 2008-10-14 | 2009-08-04 | 步进驱动器 |
US13/124,235 US8567272B2 (en) | 2008-10-14 | 2009-08-04 | Step actuator |
EP09820687.3A EP2341601B1 (en) | 2008-10-14 | 2009-08-04 | Step actuator |
JP2011532007A JP5730207B2 (ja) | 2008-10-14 | 2009-08-04 | ステップアクチュエータ |
US14/039,961 US8826757B2 (en) | 2008-10-14 | 2013-09-27 | Step actuator |
US14/448,660 US9644719B2 (en) | 2008-10-14 | 2014-07-31 | Step actuator |
US15/474,647 US10495198B2 (en) | 2008-10-14 | 2017-03-30 | Step actuator |
US16/667,123 US10982741B2 (en) | 2008-10-14 | 2019-10-29 | Step actuator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080100895A KR101028247B1 (ko) | 2008-10-14 | 2008-10-14 | 스텝 액츄에이터 |
KR10-2008-0100895 | 2008-10-14 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/124,235 A-371-Of-International US8567272B2 (en) | 2008-10-14 | 2009-08-04 | Step actuator |
US14/039,961 Continuation US8826757B2 (en) | 2008-10-14 | 2013-09-27 | Step actuator |
Publications (2)
Publication Number | Publication Date |
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WO2010044537A2 true WO2010044537A2 (ko) | 2010-04-22 |
WO2010044537A3 WO2010044537A3 (ko) | 2010-07-01 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/KR2009/004344 WO2010044537A2 (ko) | 2008-10-14 | 2009-08-04 | 스텝 액츄에이터 |
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US (5) | US8567272B2 (ko) |
EP (1) | EP2341601B1 (ko) |
JP (1) | JP5730207B2 (ko) |
KR (1) | KR101028247B1 (ko) |
CN (2) | CN102246400B (ko) |
WO (1) | WO2010044537A2 (ko) |
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- 2009-08-04 US US13/124,235 patent/US8567272B2/en active Active
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- 2009-08-04 WO PCT/KR2009/004344 patent/WO2010044537A2/ko active Application Filing
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Also Published As
Publication number | Publication date |
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EP2341601A2 (en) | 2011-07-06 |
US8826757B2 (en) | 2014-09-09 |
EP2341601B1 (en) | 2018-10-03 |
US8567272B2 (en) | 2013-10-29 |
KR101028247B1 (ko) | 2011-04-11 |
JP2012506230A (ja) | 2012-03-08 |
CN103560641B (zh) | 2017-03-01 |
US20170204951A1 (en) | 2017-07-20 |
CN102246400A (zh) | 2011-11-16 |
EP2341601A4 (en) | 2016-11-16 |
US20110203396A1 (en) | 2011-08-25 |
US20200063840A1 (en) | 2020-02-27 |
US10982741B2 (en) | 2021-04-20 |
US20150020623A1 (en) | 2015-01-22 |
WO2010044537A3 (ko) | 2010-07-01 |
CN102246400B (zh) | 2013-11-20 |
US9644719B2 (en) | 2017-05-09 |
US10495198B2 (en) | 2019-12-03 |
CN103560641A (zh) | 2014-02-05 |
KR20100041627A (ko) | 2010-04-22 |
JP5730207B2 (ja) | 2015-06-03 |
US20140026696A1 (en) | 2014-01-30 |
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