WO2012137241A1 - Linear motor - Google Patents
Linear motor Download PDFInfo
- Publication number
- WO2012137241A1 WO2012137241A1 PCT/JP2011/001996 JP2011001996W WO2012137241A1 WO 2012137241 A1 WO2012137241 A1 WO 2012137241A1 JP 2011001996 W JP2011001996 W JP 2011001996W WO 2012137241 A1 WO2012137241 A1 WO 2012137241A1
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- WIPO (PCT)
- Prior art keywords
- linear motor
- section
- fixed
- bearing
- sliding
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion 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
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion 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
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion 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
- H02K41/02—Linear motors; Sectional motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2207/00—Specific aspects not provided for in the other groups of this subclass relating to arrangements for handling mechanical energy
- H02K2207/03—Tubular motors, i.e. rotary motors mounted inside a tube, e.g. for blinds
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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
- H02K7/08—Structural association with bearings
Definitions
- the present invention relates to a linear motor including a slide bearing disposed between a movable portion and a fixed portion, and a sliding member disposed eccentrically from the central axis of the fixed portion.
- the shaft member (first sleeve) has N-pole and S-pole permanent magnets alternately formed along the axial direction in the interior thereof, and further improves the thrust between the permanent magnets.
- a structure provided with a magnetic body (yoke) is employed.
- the coil surrounding the outer periphery of the shaft member is provided in the movable part, and the shaft member moves linearly relative to the movable part in the axial direction of the shaft member inside the movable part located on the outer peripheral side of the shaft member.
- a bearing for guiding the movement is provided.
- a linear motor having such a structure has a structure in which a cylindrical or quadrangular bearing and a movable part are arranged around a shaft member, and a minute gap is provided between the bearing and the shaft member to facilitate relative motion. (For example, refer to Patent Document 1).
- the conventional linear motor is configured as described above, rattling and fluctuation occur between the bearing and the shaft member by a minute gap provided between the bearing and the shaft member.
- a shaft type linear motor in which a shaft that transmits thrust to the machine is provided in the movable part, there is a problem in that the positioning accuracy of the shaft tip part is lowered.
- the present invention has been made to solve the above-described problems, and its purpose is to eliminate rattling and fluctuation between the bearing and the shaft member. For example, the positioning accuracy of the shaft tip portion of the shaft type linear motor Is to make it higher.
- the linear motor includes a fixed portion and a movable portion that is located inside the fixed portion and is provided so as to be relatively displaceable in the axial direction with respect to the fixed portion.
- a magnet part made up of a plurality of permanent magnets laminated in the axial direction, and a first sliding part made of a magnetic material that is arranged at one end of the magnet part and slides and guides the inside of the fixed part in the axial direction.
- the fixed portion is provided inside the fixed portion with a first bearing made of a non-magnetic material that is in contact with the inner surface of the fixed portion that slidably supports the first sliding portion, and provides a magnetic flux to its inner space.
- the positioning accuracy of the shaft tip portion of the shaft type linear motor can be increased, and the shaft type linear motor can be applied to precision electronic devices such as surface mounters and board inspection machines.
- FIG. 1 is a structural diagram of a plain bearing of a shaft type linear motor showing Embodiment 1 of the present invention. It is sectional drawing of the shaft type linear motor which shows Example 2 of this invention. It is sectional drawing of the shaft type linear motor which shows Example 3 of this invention. It is a block diagram of the plain bearing of the shaft type linear motor which shows Example 4 of this invention. It is sectional drawing of the shaft type linear motor which shows Example 5 of this invention. It is sectional drawing of the shaft type linear motor which shows Example 6 of this invention.
- Example 1 is a cross-sectional view of a shaft type linear motor showing Embodiment 1 of the present invention
- FIG. 2 is an exploded perspective view of the shaft type linear motor showing Embodiment 1 of the present invention
- reference numeral 1 denotes a fixed portion of the shaft type linear motor
- 2 denotes a movable portion of the shaft type linear motor, which can be displaced relative to the fixed portion 1 in the axial direction
- 31 is a slide bearing that functions as a first bearing and has an L-shaped cross section along the axial direction
- 51 is a power supply lead wire
- 11 is a plurality for generating a magnetic flux by causing a current to flow from the power supply lead wire 51.
- a U-shaped lower frame, 15 is a base for increasing mechanical rigidity
- 16 is a bearing that supports a shaft
- 17 is a bracket that holds the bearing
- 18 is a cover that prevents foreign matter from entering
- 41 is a position.
- the fixed portion 1 is a slide bearing 31, a coil 11, a bobbin 12, an upper frame 13, a lower frame 14, a base 15, a bearing 16, a bracket 17, a cover 18, and a position detector 41. It is made.
- 32 is a sliding member that slides and guides the surface of the slide bearing 31 that functions as a first sliding portion
- 21 is a magnet portion that generates thrust by interaction with the magnetic flux generated by the plurality of coils 11.
- a plurality of permanent magnets stacked in order to achieve this. 22 is made of a magnetic material or a non-magnetic material, and is arranged between the plurality of permanent magnets 21 so that the N pole and S pole magnetic poles of the plurality of laminated permanent magnets 21 are alternately formed in the axial direction.
- the spacer 23 is a shaft coupling member
- 24 is a shaft (shaft) for transmitting the generated thrust to the machine
- the movable part 2 includes a sliding member 32, a permanent magnet 21, a spacer 22, and a shaft coupling member 23.
- the movable part 2 is connected to the end of the shaft 24.
- the other end of the shaft 24 protrudes outside the fixed part 1 and is used for position detection.
- the central axis of the plurality of permanent magnets 21, the central axis of the spacer 22, and the central axis of the shaft coupling member 23 coincide with the central axis of the shaft 24.
- the movable part 2 is disposed inside the fixed part 1 and has a structure movable in the Z direction in FIG.
- the plurality of coils 11 and the plurality of bobbins 12 are arranged concentrically outside the plurality of permanent magnets 21, and the central axes of the plurality of coils 11 and the central axes of the plurality of bobbins 12 are Each coincides with the central axis of the shaft 24.
- Reference numeral 42 denotes a scale
- 25 denotes a shaft tip of the shaft 24
- 26 denotes a scale coupling member
- 52 denotes a position detector lead.
- the scale 42 is coupled to the shaft distal end portion 25 by the scale coupling member 26, and has a structure that can move according to the movement of the shaft 24.
- the scale 42 has optical or magnetic position information recorded therein, and the position detector 41 coupled to the fixed portion 1 detects the position of the shaft 24 in the Z direction in FIG. In addition, the position signal is transmitted from the position detector lead wire 52 to the control unit.
- the A-A ′ cross section and the B-B ′ cross section are cross sections along the XY plane of the shaft type linear motor shown in FIG.
- FIG. 3 is a configuration diagram of a control unit of the shaft type linear motor showing the first embodiment of the present invention.
- 90 is a control unit
- 100 is a shaft type linear motor.
- 91 is a position control circuit
- 92 is a speed control circuit
- 93 is a current control circuit
- 99 is a current detector.
- a control unit 90 is a position control circuit 91, a speed control circuit 92, a current control circuit 93, and a current detector 99. Composed.
- Position information detected by the scale 42 and the position detector 41 is fed back to the control unit 90 of the shaft type linear motor 100.
- the position control circuit 91 performs position control by comparing the position feedback value from the position detector 41 with the command value, and the speed control circuit 92 differentiates the output value from the position control circuit 91 and the position feedback value.
- the current control circuit 93 can perform thrust control by comparing the output value from the speed control circuit 92 and the current feedback value from the current detector 99, respectively.
- FIG. 4 is a structural diagram of a plain bearing of a shaft type linear motor showing Embodiment 1 of the present invention.
- 61 is a magnetic flux
- 62a and 62b are magnetic attractive forces generated by the influence of the magnetic flux 61 produced by the permanent magnet 21.
- the slide bearing 31 is made of resin (non-magnetic material), and has a L-shaped cross section along the axial direction as shown in the A-A 'cross section of FIG.
- the sliding member 32 is, for example, an S50C material
- the upper frame 13 and the lower frame 14 are, for example, SPCC materials, all of which are magnetic materials.
- the sliding member 32 is not concentric with respect to the central axis of the inner space of the coil 11 arranged concentrically with respect to the central axis of the shaft 24, and is installed so as to be eccentric to the sliding bearing 31 side.
- the gap between the sliding member 32 and the upper frame 13 and the gap between the sliding member 32 and the lower frame 14 are each on the side where the slide bearing 31 having an L-shaped cross section is interposed (A in FIG. 4).
- -A 'cross section does not exist on the left side and bottom surface of the sliding member 32), and has a predetermined distance on the non-intervening side (on the AA' cross section in FIG. 4, the right side surface and top surface of the sliding member 32). Will exist.
- the magnetic flux 61 is magnetic between the upper frame 13 that is a magnetic material and the permanent magnet 21, between both side surfaces of the U-shaped lower frame 14 that is a magnetic material, and the permanent magnet 21.
- a cross section as a material is formed between the lower surface of the U-shaped lower frame 14 and the permanent magnet 21.
- magnetic attractive forces 62a and 62b are generated between the sliding member 32, which is a magnetic material, and the upper frame 13 and the U-shaped lower frame 14, which are magnetic materials.
- 32 is disposed in such a way that the lower frame 14 has an L-shaped slide bearing 31 on the side where the L-shaped slide bearing 31 is interposed.
- the bias of the sliding member 32 causes the magnetic attraction force 62a to generate a slide having an L-shaped cross section. It acts strongly on the side where the bearing 31 is interposed (the left side surface and the lower surface of the sliding member 32 in the section AA ′ in FIG. 4), and the magnetic attractive force 62b is not on the side where the L-shaped slide bearing 31 is not interposed (FIG. In the section AA ′ of FIG. 4, the sliding member 32 has almost no action on the right side surface and the upper surface.
- the sliding member 32 and the sliding bearing 31 having an L-shaped cross section are always in contact with each other with a constant magnetic attractive force 62a.
- the linear motor configuration does not require any processing.
- the positioning accuracy of the shaft tip portion of the shaft type linear motor can be increased.
- a motor can be applied. For example, it is possible to increase the density of components mounted on an electronic substrate.
- Example 2 In the first embodiment of the present invention, the case where only one end portion of the movable portion 2 is the slide bearing 31 has been described. However, as shown in FIG. 5, both end portions of the movable portion 2 are connected to the slide bearing 31a as the first bearing.
- the sliding bearing 31b as the second bearing may be used, and the same effect can be obtained by such a configuration.
- a sliding member 32a Corresponding to the sliding bearings 31a, 31b at both ends of the movable part 2, on both sides sliding with the sliding bearings 31a, 31b of the fixed part 1, a sliding member 32a, which is a first sliding part, A sliding member 32b, which is the second sliding portion, is installed.
- Example 3 In the first and second embodiments of the present invention, the case where the positional accuracy in the X and Y directions is ensured by using two surfaces of the L-shaped slide bearing 31 is described.
- the slide bearing 35 In the case of only one direction, for example, only the X direction, as shown in FIG. 6, the slide bearing 35 may be formed in a flat plate shape parallel to the lower surface of the lower frame 14 along the axial direction. In this case, the same effects as those of the first and second embodiments can be obtained.
- FIG. 7 is a structural diagram of a plain bearing of a shaft type linear motor showing Embodiment 4 of the present invention.
- Reference numeral 71 denotes a first intermediate member, which is an intermediate member in FIG.
- the slide bearing 31 is made of resin (non-magnetic material) and has an L-shaped cross section along the axial direction as shown in the AA ′ cross section of FIG. It is in contact.
- the intermediate member 71 is, for example, a magnetic material such as an SPCC material, and has an L-shaped cross section along the axial direction as shown in the AA ′ cross section of FIG. And is in contact with the lower surface.
- the sliding member 32 is, for example, an S50C material, and the upper frame 13 and the lower frame 14 are, for example, SPCC materials, all of which are magnetic materials.
- the sliding member 32 is installed so as to coincide with the central axis of the inner space of the coil 11 arranged concentrically with respect to the central axis of the shaft 24.
- the gap between the sliding member 32 and the upper frame 13 and the gap between the sliding member 32 and the lower frame 14 are the sides where the slide bearing 31 and the intermediate member 71 having an L-shaped cross section are interposed ( In the AA ′ cross section of FIG. 7, it does not exist on the left side and bottom surface of the sliding member 32, and on the non-intervening side (the right side surface and top surface of the sliding member 32 in the AA ′ cross section of FIG. 7). It exists with a predetermined distance.
- the magnetic flux 61 is magnetic between the upper frame 13, which is a magnetic material, and the permanent magnet 21, and between the right side surface of the U-shaped lower frame 14, which is a magnetic material, and the permanent magnet 21.
- a cross section that is a material is formed between the lower surface of the L-shaped intermediate member 71 and the permanent magnet 21, and a cross section that is a magnetic material is formed between the right side surface of the L-shaped intermediate member 71 and the permanent magnet 21.
- magnetic attractive forces 62a and 62b are formed between the sliding member 32, which is a magnetic material, the upper frame 13, which is a magnetic material, the U-shaped lower frame 14, and the L-shaped intermediate member 71.
- the magnetic attraction force 62a is on the side where the L-shaped slide bearing 31 and the intermediate member 71 are interposed (on the left side surface and the lower surface of the sliding member 32 in the AA 'cross section in FIG. 7). It acts strongly, and the magnetic attractive force 62b hardly acts on the side where the L-shaped slide bearing 31 and the intermediate member 71 are not interposed (the right side surface and the top surface of the sliding member 32 in the AA ′ cross section in FIG. 7). become.
- the sliding member 32 and the sliding bearing 31 having an L-shaped cross section are always in contact with each other with a constant magnetic attractive force 62a.
- the linear motor configuration does not require any processing.
- the positioning accuracy of the shaft tip portion of the shaft-type linear motor can be increased.
- a motor can be applied. For example, it is possible to increase the density of components mounted on an electronic substrate.
- Example 5 In the fourth embodiment of the present invention, the case where the intermediate member 71 is applied only to one end of the movable portion 2 has been described. However, as shown in FIG. 8, the intermediate member that is the first intermediate member at both ends of the movable portion 2. 71a and the intermediate member 71b which is a 2nd intermediate member may be applied, and the same effect can be acquired also by such a structure.
- Example 6 In the fourth embodiment and the fifth embodiment of the present invention, the case where the positional accuracy in the X and Y directions is secured using the two surfaces of the L-shaped intermediate member 71 is described.
- the intermediate member 75 may be formed in a flat plate shape parallel to the lower surface of the lower frame 14 along the axial direction as shown in FIG. In this case, the same effects as those of the fourth and fifth embodiments can be obtained.
- the present invention is not limited to this, and the same effect can be obtained when applied to other linear motors. Obtainable.
Abstract
Description
図1は、この発明の実施例1を示すシャフト型リニアモータの断面図であり、図2は、この発明の実施例1を示すシャフト型リニアモータの分解斜視図である。図1と図2において、1はシャフト型リニアモータの固定部、2はシャフト型リニアモータの可動部で、固定部1に対して軸線方向に相対変位が可能ある。31は第1軸受として機能する、軸方向に沿って断面がL字形状をしたすべり軸受、51は電源用リード線、11は電源用リード線51から電流を流して磁束を発生させるための複数個のコイル、12は複数個のコイル11を絶縁する樹脂製のボビン、13は発生した磁束の磁気回路となる上フレーム、14は発生した磁束の磁気回路となる、軸方向に沿って断面がU字形状をした下フレーム、15は機械剛性を高くするためのベース、16は軸(シャフト)を支える軸受、17は軸受16を保持するブラケット、18は異物の侵入を防ぐカバー、41は位置検出器であり、固定部1は、すべり軸受31、コイル11、ボビン12、上フレーム13、下フレーム14、ベース15、軸受16、ブラケット17、カバー18、位置検出器41で構成される。 Example 1.
1 is a cross-sectional view of a shaft type linear
この発明の実施例1では、可動部2の一端部のみをすべり軸受31とした場合について説明したが、図5に示すように、可動部2の両端部を第1軸受であるすべり軸受31aと、第2軸受であるすべり軸受31bとしても良く、このような構成によっても同様の効果を得ることができる。可動部2の両端部をすべり軸受31a、31bとすることに対応して、固定部1のすべり軸受31a、31bと摺動する両側には、第1摺動部である摺動部材32aと、第2摺動部である摺動部材32bが設置される。 Example 2
In the first embodiment of the present invention, the case where only one end portion of the
この発明の実施例1及び実施例2では、L字形状のすべり軸受31の二面を使用してX及びY方向の位置精度を確保した場合について説明したが、位置精度を必要とする方向が一方向のみ、例えばX方向だけの場合は、図6に示すように、すべり軸受35を軸方向に沿って下フレーム14の下面と平行な平板状にしても良い。この場合も、実施例1及び実施例2と同様の効果を得ることができる。 Example 3
In the first and second embodiments of the present invention, the case where the positional accuracy in the X and Y directions is ensured by using two surfaces of the L-shaped
図7は、この発明の実施例4を示すシャフト型リニアモータのすべり軸受の構造図である。71は第1中間部材であり、図7では中間部材としている。 Example 4
FIG. 7 is a structural diagram of a plain bearing of a shaft type linear motor showing Embodiment 4 of the present invention.
この発明の実施例4では、可動部2の一端部のみに中間部材71を適用した場合について説明したが、図8に示すように、可動部2の両端部に第1中間部材である中間部材71aと、第2中間部材である中間部材71bを適用しても良く、このような構成によっても同様の効果を得ることができる。 Example 5 FIG.
In the fourth embodiment of the present invention, the case where the
この発明の実施例4及び実施例5では、L字形状の中間部材71の二面を使用してX及びY方向の位置精度を確保した場合について説明したが、位置精度を必要とする方向が一方向のみ、例えばX方向だけの場合は、図9に示すように、中間部材75を軸方向に沿って下フレーム14の下面と平行な平板状にしても良い。この場合も、実施例4及び実施例5と同様の効果を得ることができる。 Example 6
In the fourth embodiment and the fifth embodiment of the present invention, the case where the positional accuracy in the X and Y directions is secured using the two surfaces of the L-shaped
Claims (12)
- 固定部と、該固定部内部に位置し、該固定部に対して軸線方向に相対変位可能に設けられた可動部とを有するリニアモータであって、
前記可動部は、軸線方向に積層された複数個の永久磁石から成る磁石部と、該磁石部の一方の先端部に配置され、前記固定部内部を軸線方向に摺動案内する磁性材から成る第1摺動部とを備え、
前記固定部は、前記第1摺動部を摺動可能に支持する前記固定部内面に当接された非磁性材から成る第1軸受と、前記固定部内部に設けられ、自身の内空間に磁束を発生させ、前記磁石部に作用させて前記可動部を相対変位させる複数個のコイルとを備え、
前記第1摺動部は、前記第1摺動部中心軸が前記コイルによって形成される内空間の断面中心軸から前記第1軸受側に偏心して配置されると共に前記第1軸受と当接することで、前記永久磁石からの磁気吸引力が偏心方向に作用させることを特徴とするリニアモータ。 A linear motor having a fixed part and a movable part located inside the fixed part and provided so as to be relatively displaceable in the axial direction with respect to the fixed part,
The movable part is composed of a magnet part composed of a plurality of permanent magnets stacked in the axial direction, and a magnetic material disposed at one tip of the magnet part and slidingly guiding the inside of the fixed part in the axial direction. A first sliding part,
The fixed portion is provided inside the fixed portion with a first bearing made of a non-magnetic material that is in contact with the inner surface of the fixed portion that slidably supports the first sliding portion. A plurality of coils that generate magnetic flux and act on the magnet portion to relatively displace the movable portion;
The first sliding portion is arranged such that the central axis of the first sliding portion is eccentric to the first bearing side from the central axis of the inner space formed by the coil, and abuts on the first bearing. The linear motor is characterized in that the magnetic attractive force from the permanent magnet acts in an eccentric direction. - 前記固定部の内断面は矩形状であり、前記第1摺動部は矩形状であり、前記第1軸受の断面はL字形状であることを特徴とする請求項1に記載のリニアモータ。 2. The linear motor according to claim 1, wherein an inner cross section of the fixed portion is rectangular, the first sliding portion is rectangular, and a cross section of the first bearing is L-shaped.
- 前記第1軸受の断面は平板状であることを特徴とする請求項2に記載のリニアモータ。 The linear motor according to claim 2, wherein the first bearing has a flat cross section.
- 固定部と、該固定部内部に位置し、該固定部に対して軸線方向に相対変位可能に設けられた可動部とを有するリニアモータであって、
前記可動部は、軸線方向に積層された複数個の永久磁石から成る磁石部と、該磁石部の両方の先端部に配置され、前記固定部内部を軸線方向に摺動案内する磁性材から成る第1及び第2摺動部とを備え、
前記固定部は、前記第1及び第2摺動部を摺動可能に支持する前記固定部内面に当接された非磁性材から成る第1及び第2軸受と、前記固定部内部に設けられ、自身の内空間に磁束を発生させ、前記磁石部に作用させて前記可動部を相対変位させる複数個のコイルとを備え、
前記第1及び第2摺動部は、前記第1及び第2摺動部中心軸が前記コイルによって形成される内空間の断面中心軸から前記第1及び第2軸受側に偏心して配置されると共に前記第1及び第2軸受と当接することで、前記永久磁石からの磁気吸引力が偏心方向に作用させることを特徴とするリニアモータ。 A linear motor having a fixed part and a movable part located inside the fixed part and provided so as to be relatively displaceable in the axial direction with respect to the fixed part,
The movable part is composed of a magnet part composed of a plurality of permanent magnets stacked in the axial direction, and a magnetic material that is disposed at both ends of the magnet part and slides and guides the inside of the fixed part in the axial direction. Comprising first and second sliding portions;
The fixed portion is provided inside the fixed portion, and first and second bearings made of a nonmagnetic material abutted on the inner surface of the fixed portion that slidably supports the first and second sliding portions. A plurality of coils that generate magnetic flux in their own internal space and act on the magnet part to relatively displace the movable part,
The first and second sliding portions are arranged such that the first and second sliding portion central axes are eccentric from the cross-sectional central axis of the inner space formed by the coil toward the first and second bearings. A linear motor in which the magnetic attraction force from the permanent magnet acts in an eccentric direction by contacting the first and second bearings. - 前記固定部の内断面は矩形状であり、前記第1及び第2摺動部は矩形状であり、前記第1及び第2軸受の断面はL字形状であることを特徴とする請求項4に記載のリニアモータ。 5. An inner cross section of the fixed portion is rectangular, the first and second sliding portions are rectangular, and a cross section of the first and second bearings is L-shaped. The linear motor described in 1.
- 前記第1及び第2軸受の断面は平板状であることを特徴とする請求項5に記載のリニアモータ。 The linear motor according to claim 5, wherein the first and second bearings have a flat cross section.
- 固定部と、該固定部内部に位置し、該固定部に対して軸線方向に相対変位可能に設けられた可動部とを有するリニアモータであって、
前記可動部は、軸線方向に積層された複数個の永久磁石から成る磁石部と、該磁石部の一方の先端部に配置され、前記固定部内部を軸線方向に摺動案内する磁性材から成る第1摺動部とを備え、
前記固定部は、前記固定部中心軸に対して非回転対称形で前記固定部内面に固着された磁性材から成る第1中間部材と、前記第1摺動部を摺動可能に支持する前記第1中間部材に当接された非磁性材から成る第1軸受と、前記固定部内部に設けられ、自身の内空間に磁束を発生させ、前記磁石部に作用させて前記可動部を相対変位させる複数個のコイルとを備え、
前記第1摺動部は、前記第1軸受と当接することで前記永久磁石からの磁気吸引力が前記第1中間部材側に作用させることを特徴とするリニアモータ。 A linear motor having a fixed part and a movable part located inside the fixed part and provided so as to be relatively displaceable in the axial direction with respect to the fixed part,
The movable part is composed of a magnet part composed of a plurality of permanent magnets stacked in the axial direction, and a magnetic material disposed at one tip of the magnet part and slidingly guiding the inside of the fixed part in the axial direction. A first sliding part,
The fixed portion includes a first intermediate member made of a magnetic material fixed to the inner surface of the fixed portion in a non-rotation symmetric manner with respect to the fixed portion central axis, and the first sliding portion slidably supported. A first bearing made of a non-magnetic material that is in contact with the first intermediate member, and a relative displacement of the movable part that is provided inside the fixed part, generates a magnetic flux in its inner space, and acts on the magnet part. A plurality of coils to be
The linear motor according to claim 1, wherein the first sliding portion abuts on the first bearing so that a magnetic attractive force from the permanent magnet acts on the first intermediate member side. - 前記固定部の内断面は矩形状であり、前記第1摺動部は矩形状であり、前記第1軸受と前記第1中間部材の断面はL字形状であることを特徴とする請求項7に記載のリニアモータ。 The inner cross section of the fixed portion is rectangular, the first sliding portion is rectangular, and the first bearing and the first intermediate member have L-shaped cross sections. The linear motor described in 1.
- 前記第1軸受と前記第1中間部材の断面は平板状であることを特徴とする請求項8に記載のリニアモータ。 The linear motor according to claim 8, wherein a cross section of the first bearing and the first intermediate member is a flat plate shape.
- 固定部と、該固定部内部に位置し、該固定部に対して軸線方向に相対変位可能に設けられた可動部とを有するリニアモータであって、
前記可動部は、軸線方向に積層された複数個の永久磁石から成る磁石部と、該磁石部の両方の先端部に配置され、前記固定部内部を軸線方向に摺動案内する磁性材から成る第1及び第2摺動部とを備え、
前記固定部は、前記固定部中心軸に対して非回転対称形で前記固定部内面に固着された磁性材から成る第1及び第2中間部材と、前記第1及び第2摺動部を摺動可能に支持する前記第1及び第2中間部材に当接された非磁性材から成る第1及び第2軸受と、前記固定部内部に設けられ、自身の内空間に磁束を発生させ、前記磁石部に作用させて前記可動部を相対変位させる複数個のコイルとを備え、
前記第1及び第2摺動部は、前記第1及び第2軸受と当接することで前記永久磁石からの磁気吸引力が前記第1及び第2中間部材側に作用させることを特徴とするリニアモータ。 A linear motor having a fixed part and a movable part located inside the fixed part and provided so as to be relatively displaceable in the axial direction with respect to the fixed part,
The movable part is composed of a magnet part composed of a plurality of permanent magnets stacked in the axial direction, and a magnetic material that is disposed at both ends of the magnet part and slides and guides the inside of the fixed part in the axial direction. Comprising first and second sliding portions;
The fixed portion slides between the first and second intermediate members made of a magnetic material fixed to the inner surface of the fixed portion in a non-rotation symmetric manner with respect to the central axis of the fixed portion, and the first and second sliding portions. First and second bearings made of a non-magnetic material abutting against the first and second intermediate members that are movably supported, and provided inside the fixed portion, generate magnetic flux in its own internal space, A plurality of coils that act on the magnet portion to relatively displace the movable portion;
The first and second sliding portions are in contact with the first and second bearings so that a magnetic attraction force from the permanent magnet acts on the first and second intermediate members. motor. - 前記固定部の内断面は矩形状であり、前記第1及び第2摺動部は矩形状であり、前記第1及び第2軸受と前記第1及び第2中間部材の断面はL字形状であることを特徴とする請求項10に記載のリニアモータ。 An inner cross section of the fixed portion is rectangular, the first and second sliding portions are rectangular, and a cross section of the first and second bearings and the first and second intermediate members are L-shaped. The linear motor according to claim 10, wherein the linear motor is provided.
- 前記第1及び第2軸受と前記第1及び第2中間部材の断面は平板状であることを特徴とする請求項11に記載のリニアモータ。 12. The linear motor according to claim 11, wherein the first and second bearings and the first and second intermediate members have a flat cross section.
Priority Applications (5)
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JP2013508620A JP5306558B2 (en) | 2011-04-04 | 2011-04-04 | Linear motor |
PCT/JP2011/001996 WO2012137241A1 (en) | 2011-04-04 | 2011-04-04 | Linear motor |
KR1020137026072A KR101374464B1 (en) | 2011-04-04 | 2011-04-04 | Linear motor |
CN201180069957.6A CN103460575B (en) | 2011-04-04 | 2011-04-04 | Linear motor |
TW100112932A TWI426684B (en) | 2011-04-04 | 2011-04-14 | Linear moto |
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PCT/JP2011/001996 WO2012137241A1 (en) | 2011-04-04 | 2011-04-04 | Linear motor |
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KR (1) | KR101374464B1 (en) |
CN (1) | CN103460575B (en) |
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WO2014167720A1 (en) * | 2013-04-12 | 2014-10-16 | 三菱電機株式会社 | Movable element and linear motor |
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JPH07274475A (en) * | 1994-03-28 | 1995-10-20 | Sofutoronikusu Kk | Linear actuator |
JPH09182408A (en) * | 1995-12-27 | 1997-07-11 | Hitachi Metals Ltd | Linear motor |
JPH09261942A (en) * | 1996-03-26 | 1997-10-03 | Sharp Corp | Linear pulse motor |
JP2010288423A (en) * | 2009-06-15 | 2010-12-24 | Kayaba Ind Co Ltd | Linear actuator |
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JP3820169B2 (en) * | 2002-03-20 | 2006-09-13 | 三菱電機株式会社 | Linear motor and manufacturing method thereof |
JP2006280125A (en) * | 2005-03-30 | 2006-10-12 | Thk Co Ltd | Linear motor actuator |
CN101741215B (en) * | 2008-11-20 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Permanent magnet synchronous linear motor |
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2011
- 2011-04-04 CN CN201180069957.6A patent/CN103460575B/en not_active Expired - Fee Related
- 2011-04-04 WO PCT/JP2011/001996 patent/WO2012137241A1/en active Application Filing
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JPH07274475A (en) * | 1994-03-28 | 1995-10-20 | Sofutoronikusu Kk | Linear actuator |
JPH09182408A (en) * | 1995-12-27 | 1997-07-11 | Hitachi Metals Ltd | Linear motor |
JPH09261942A (en) * | 1996-03-26 | 1997-10-03 | Sharp Corp | Linear pulse motor |
JP2010288423A (en) * | 2009-06-15 | 2010-12-24 | Kayaba Ind Co Ltd | Linear actuator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014167720A1 (en) * | 2013-04-12 | 2014-10-16 | 三菱電機株式会社 | Movable element and linear motor |
TWI500238B (en) * | 2013-04-12 | 2015-09-11 | Mitsubishi Electric Corp | Mover and linear motor |
JP5872108B2 (en) * | 2013-04-12 | 2016-03-01 | 三菱電機株式会社 | Mover and linear motor |
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KR101374464B1 (en) | 2014-03-17 |
TW201242222A (en) | 2012-10-16 |
CN103460575A (en) | 2013-12-18 |
TWI426684B (en) | 2014-02-11 |
JP5306558B2 (en) | 2013-10-02 |
KR20130115400A (en) | 2013-10-21 |
JPWO2012137241A1 (en) | 2014-07-28 |
CN103460575B (en) | 2015-03-25 |
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