CN117277722A - Linear motor rotor structure and linear motor - Google Patents

Linear motor rotor structure and linear motor Download PDF

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Publication number
CN117277722A
CN117277722A CN202311318005.4A CN202311318005A CN117277722A CN 117277722 A CN117277722 A CN 117277722A CN 202311318005 A CN202311318005 A CN 202311318005A CN 117277722 A CN117277722 A CN 117277722A
Authority
CN
China
Prior art keywords
linear motor
winding
rotor
mover
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311318005.4A
Other languages
Chinese (zh)
Inventor
包文科
谢芳
刘伟健
祝跃伟
戚佳铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai, Zhuhai Kaibang Motor Manufacture Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202311318005.4A priority Critical patent/CN117277722A/en
Publication of CN117277722A publication Critical patent/CN117277722A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion 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
    • H02K41/02Linear motors; Sectional motors
    • H02K41/03Synchronous motors; Motors moving step by step; Reluctance motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/32Windings characterised by the shape, form or construction of the insulation
    • H02K3/34Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03Machines characterised by numerical values, ranges, mathematical expressions or similar information

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The invention provides a linear motor rotor structure and a linear motor. The linear motor rotor structure comprises a rotor iron core (11) and a rotor winding (13), wherein the rotor iron core (11) comprises iron core teeth (111), an iron core yoke (112) and a magnetic field generating device (12), the rotor winding (13) is wound on the iron core teeth (111), the magnetic field generating device (12) is arranged at the top and/or the bottom of the iron core teeth (111), the length direction of the magnetic field generating device (12) is consistent with the stacking direction of the rotor iron core (11), and the magnetizing direction of the magnetic field generating device (12) is consistent with the magnetic field direction generated after the rotor winding (13) is electrified. According to the linear motor rotor structure, the thrust of the linear motor can be increased by a smaller size, and the thrust lifting requirement of the linear motor is met.

Description

Linear motor rotor structure and linear motor
Technical Field
The invention relates to the technical field of linear motors, in particular to a linear motor rotor structure and a linear motor.
Background
A linear motor can be regarded as a structural deformation of the rotating electrical machine, and can be regarded as a radial split of a rotating electrical machine and then a flat opening. The linear motor has the working principle that a large current is input and high-speed motion is performed at a large acceleration, and the linear motor has high speed, high precision and high thrust, so that the linear motor is widely applied to various fields such as machine tools.
The linear motor structure is relatively simple, and when the motor iron core is opened and shaped, the linear motor with different thrust can be realized only by changing the stacking height. For a high-thrust linear motor, the thrust can be increased by increasing the stacking height, namely the volume, but the linear motor is larger in size, and certain difficulties are caused to production, manufacture, application, assembly and the like.
Disclosure of Invention
The invention mainly aims to provide a linear motor rotor structure and a linear motor, which can increase the thrust of the linear motor with smaller size and meet the thrust lifting requirement of the linear motor.
In order to achieve the above object, according to an aspect of the present invention, there is provided a linear motor mover structure including a mover core and a mover winding, the mover core including core teeth, a core yoke, and a magnetic field generating device wound on the core teeth, the magnetic field generating device being disposed at a top and/or a bottom of the core teeth, a length direction of the magnetic field generating device being consistent with a stacking direction of the mover core, a magnetizing direction of the magnetic field generating device being consistent with a magnetic field direction generated after the mover winding is energized.
Further, a first notch is formed in the top surface, far away from the iron core yoke, of the iron core tooth, and the magnetic field generating device is embedded in the first notch; or the magnetic field generating device is stuck and fixed on the top surface of the iron core tooth far away from the iron core yoke.
Further, the iron core yoke is provided with a containing groove at one side close to the iron core teeth, at least part of the containing groove is arranged corresponding to the iron core teeth, and the magnetic field generating device is embedded in the containing groove.
Further, at least a portion of the receiving slots are offset relative to the core teeth along the direction of arrangement of the core teeth.
Further, the width of the accommodating groove along the arrangement direction of the iron core teeth is larger than the width of the iron core teeth along the arrangement direction of the iron core teeth.
Further, the magnetic field generating device is a permanent magnet or an auxiliary coil.
Further, the mover winding includes a mover coil and an insulation paper disposed between the mover winding and the core teeth and insulating the mover winding from the core teeth.
Further, the rotor coil is provided with an inner cavity, the iron core teeth are positioned in the inner cavity, the length dimension of the inner cavity is larger than that of the iron core teeth, the width dimension of the inner cavity is larger than that of the iron core teeth, a gap is formed between the cavity wall of the inner cavity and the iron core teeth, and the insulation slot paper is positioned in the gap.
Further, a limiting structure is arranged on the rotor core, and the limiting structure and the rotor winding form limiting fit to limit the rotor winding on the rotor core.
Further, limit structure includes fixing clip and installation strip, and the second notch has been seted up to one side that the iron core tooth was kept away from to the iron core yoke, and the installation strip is installed in the second notch, and the both ends of installation strip are provided with the screw hole respectively, and the fixing clip includes latch and flange, and the flange is pressed and is established outside the rotor winding, and latch and installation strip spiro union are fixed.
Further, the latch is made of insulating materials, the width of the latch is consistent with that of the iron core teeth, and the latch is embedded between the end parts of the iron core teeth and the rotor winding.
Further, the rotor coil comprises a winding inner ring, a winding outer ring and winding end parts, the insulation slot paper comprises an inner protection layer, an outer protection layer and end protection layers, the inner protection layer covers the winding inner ring, the outer protection layer covers the winding outer ring, and the end protection layers cover the winding end parts.
Further, two outer protective layers are arranged on two sides of the inner protective layer, the outer protective layers are connected with the inner protective layer through bending sections, the width of each outer protective layer is half of that of the inner protective layer, the two outer protective layers are spliced and coated on the outer ring of the winding, and two opposite sides of the rotor coil are coated with insulating slot paper respectively.
Further, an insulating slot paper is attached to the surface of the mover coil.
According to another aspect of the present invention, there is provided a linear motor including a linear motor mover structure, the linear motor mover structure being the above-described linear motor mover structure.
By applying the technical scheme of the invention, the linear motor rotor structure comprises a rotor core and rotor windings, wherein the rotor core comprises core teeth, core yokes and magnetic field generating devices, the rotor windings are wound on the core teeth, the magnetic field generating devices are arranged at the top and/or bottom of the core teeth, the length direction of the magnetic field generating devices is consistent with the stacking direction of the rotor core, and the magnetizing direction of the magnetic field generating devices is consistent with the magnetic field direction generated after the rotor windings are electrified. The magnetic field generating device is arranged at the top and/or the bottom of the iron core teeth, the magnetizing direction of the magnetic field generating device is consistent with the magnetic field direction generated after the rotor winding is electrified, the magnetic field intensity generated by the rotor winding can be improved in a mode that the magnetic field generating device is used for superposing the magnetic field of the rotor winding, so that the thrust of the linear motor is effectively improved, and the thrust lifting requirement of the linear motor is met on the basis that the size of the linear motor is not increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a perspective structural view of a mover structure of a linear motor according to an embodiment of the present invention;
fig. 2 shows an exploded structural view of a mover structure of a linear motor according to an embodiment of the present invention;
fig. 3 shows a schematic diagram of an insulation slot paper structure of a linear motor mover structure according to an embodiment of the present invention;
fig. 4 is a perspective view showing a mover winding of a mover structure of a linear motor according to an embodiment of the present invention;
fig. 5 shows a schematic structural view of a fixing card of a mover structure of a linear motor according to an embodiment of the present invention; and
fig. 6 shows a schematic structural view of another mover core of the mover structure of the linear motor according to the embodiment of the present invention.
Wherein the above figures include the following reference numerals:
11. a mover core; 111. iron core teeth; 112. an iron core yoke; 113. a first notch; 114. a second notch; 115. a receiving groove; 12. a magnetic field generating device; 13. a mover winding; 131. a mover coil; 1311. a winding inner ring; 1312. a winding outer ring; 1313. winding end; 132. insulation groove paper; 1321. an inner protective layer; 1322. an outer protective layer; 1323. an end protection layer; 1324. bending sections; 14. a fixing clip; 141. latch teeth; 142. a flange; 143. a through hole; 15. a mounting bar; 151. and (3) a threaded hole.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 6 in combination, according to an embodiment of the present invention, a linear motor mover structure includes a mover core 11 and a mover winding 13, the mover core 11 includes core teeth 111, a core yoke 112, and a magnetic field generating device 12, the mover winding 13 is wound on the core teeth 111, the magnetic field generating device 12 is disposed at the top and/or bottom of the core teeth 111, a length direction of the magnetic field generating device 12 is consistent with a stacking direction of the mover core 11, and a magnetizing direction of the magnetic field generating device 12 is consistent with a magnetic field direction generated after the mover winding 13 is energized.
The magnetic field generating device 12 is arranged at the top and/or the bottom of the iron core teeth 111, the magnetizing direction of the magnetic field generating device 12 is consistent with the magnetic field direction generated after the rotor winding 13 is electrified, the magnetic field intensity generated by the rotor winding 13 can be improved in a mode that the magnetic field generating device 12 is used for superposing the magnetic field of the rotor winding 13, so that the thrust of the linear motor is effectively improved, and the thrust lifting requirement of the linear motor is met on the basis that the size of the linear motor is not increased.
In one embodiment, the core teeth 111 are provided with a first slot 113 on the top surface remote from the core yoke 112, and the magnetic field generating device 12 is embedded in the first slot 113.
In this embodiment, by forming the first notch 113 on the top surface of the core yoke 112, the magnetic field generating device 12 may be fixed in the first notch 113, so that the installation and fixation of the magnetic field generating device 12 are facilitated, and in the installation process, by setting the depth of the first notch 113, the top surface of the magnetic field generating device 12 is flush with the top of the first notch 113, or is lower than the top of the first notch 113, so that the size of the mover core 11 formed in this way is identical to the original size, and the magnetic field strength is greatly improved, so that the thrust of the linear motor can be greatly improved. In order to ensure the stability of the mounting structure of the magnetic field generating device 12 in the first slot 113, glue may be placed in the first slot 113 so that the magnetic field generating device 12 may be adhesively secured in the first slot 113.
In one embodiment, the magnetic field generating device 12 is adhesively secured to the top surface of the core teeth 111 remote from the core yoke 112.
In this embodiment, the top surface of the iron core teeth 111 is a plane, and the magnetic field generating device 12 may be directly placed on the top surface of the iron core teeth 111 and adhered and fixed by gluing, and since the arrangement of the magnetic field generating device 12 is not limited by the structure of the iron core teeth 111, it is possible to have a larger arrangement area, and the auxiliary mover winding 13 generates a larger magnetic field strength, so that the linear motor can have a larger thrust.
In one embodiment, the core yoke 112 is provided with a receiving groove 115 at a side close to the core teeth 111, at least part of the receiving groove 115 is provided corresponding to the core teeth 111, and the magnetic field generating device 12 is embedded in the receiving groove 115.
In the present embodiment, the accommodating groove 115 is provided on the side of the core yoke 112 near the core teeth 111, and the magnetic field generating device 12 is provided in the accommodating groove 115, so that the magnetic field strength of the mover winding 13 can be increased by the magnetic field generating device 12. Since the arrangement of the magnetic field generating device 12 is not limited by the structure of the iron core teeth 111, it is possible to have a larger arrangement area, and the auxiliary mover windings 13 generate a larger magnetic field strength, thereby enabling the linear motor to have a larger thrust.
In the present embodiment, the accommodation groove 115 may penetrate the core yoke 112 in the width direction, or may not penetrate the core yoke 112, and may have an accommodation groove structure with only one side open. The magnetic field generating device 12 may be fixed by an interference fit with the accommodating groove 115, or may be fixed by gluing or the like.
In one embodiment, at least a portion of the receiving slots 115 are offset relative to the core teeth 111 along the direction of arrangement of the core teeth 111.
In this embodiment, the accommodating groove 115 is offset by a certain distance with respect to the iron core teeth 111, so that the magnetic field generating device 12 located in the accommodating groove 115 is offset by a certain distance with respect to the iron core teeth 111, and the magnetic circuit at the iron core yoke 112 can be better optimized, so that the linear motor has better working performance.
In one embodiment, the width of the accommodating groove 115 along the arrangement direction of the iron core teeth 111 is larger than the width of the iron core teeth 111 along the arrangement direction thereof, so that the magnetic field generating device 12 positioned in the accommodating groove 115 has a larger magnetic flux area, the auxiliary rotor winding 13 generates a larger magnetic field intensity, and the thrust of the linear motor is further improved.
In one embodiment, the magnetic field generating device 12 is a permanent magnet or an auxiliary coil.
In this embodiment, when the magnetic field generating device 12 is a permanent magnet, the magnetizing direction of the permanent magnet is consistent with the direction of the magnetic field generated after the mover winding 13 is energized, so that the magnetic flux of the core teeth 111 of the mover core 11 can be enhanced, i.e. the thrust of the motor can be increased. Meanwhile, the part of permanent magnets can exert force with the permanent magnets of the stator of the linear motor, and the sectional area and the angle between the permanent magnets arranged on the rotor core 11 of the linear motor and the permanent magnets of the stator of the linear motor are different, so that the motor thrust can be further increased, and further, the motor thrust is increased in the whole running process of the linear motor, and therefore, the motor thrust can be effectively increased by embedding the permanent magnets in the rotor core of the linear motor.
When the magnetic field generating device 12 is an auxiliary coil, the magnetic field generated by energizing the auxiliary coil is consistent with the magnetic field generated by energizing the rotor winding 13, so that the magnetic flux of the iron core teeth 111 of the rotor iron core 11 can be enhanced, and the thrust of the motor can be increased. The magnetic field generated by the depression assisting coil and the magnetic field generated by energizing the mover winding 13 are better in consistency, so that a stronger magnetic field enhancing effect can be obtained.
In one embodiment, the mover winding 13 is a self-adhesive winding, such as a self-adhesive enamel wire.
In one embodiment, the mover winding 13 includes a mover coil 131 and an insulation slot paper 132, and the insulation slot paper 132 is disposed between the mover winding 13 and the core teeth 111 and forms an insulation interval for the mover winding 13 and the core teeth 111.
If the self-adhesive winding has no framework, and the rotor winding 13 with no framework protection is directly embedded in the rotor core 11, poor insulation and voltage resistance can be generated. In order to prevent poor insulation and voltage resistance, the rotor coil 131 is wrapped by the insulation slot paper 132, so that insulation and isolation are formed between the rotor coil 131 and the rotor core 11, direct contact between the rotor winding 13 and the rotor core 11 is avoided, and abnormal insulation and voltage resistance of the motor is avoided.
In one embodiment, the mover coil 131 has an inner cavity, the iron core teeth 111 are located in the inner cavity, the length dimension of the inner cavity is larger than the length dimension of the iron core teeth 111, the width dimension of the inner cavity is larger than the width dimension of the iron core teeth 111, a gap is formed between the cavity wall of the inner cavity and the iron core teeth 111, and the insulation slot paper 132 is located in the gap.
In the present embodiment, the length dimension of the mover coil 131 is greater than 3mm in the one-sided direction with respect to the length dimension of the core teeth 111 of the mover core 11, so that a sufficient gap can be formed between the mover coil 131 and the core teeth 111 to mount the insulation slot paper 132 to form insulation.
In one embodiment, a limiting structure is arranged on the rotor core 11, and the limiting structure forms limiting fit with the rotor winding 13 to limit the rotor winding 13 on the rotor core 11.
Since the inner cavity size of the mover coil 131 is larger than the size of the core teeth 111 of the mover core 11 due to the interval between the mover coil 131 and the mover core 11, when the mover coil 131 is placed on the core teeth 111, the mover coil 131 is easily shifted with respect to the core teeth 111. Through setting up limit structure for limit structure and active cell core 11 fixed connection make limit structure form spacingly to active cell winding 13 simultaneously, can prevent that active cell winding 13 from taking place the position offset for active cell core 11, improve active cell winding 13 mounting structure's on active cell core 11 stability and reliability.
In one embodiment, the limiting structure comprises a fixing clip 14 and a mounting strip 15, a second notch 114 is formed in one side, far away from the iron core teeth 111, of the iron core yoke 112, the mounting strip 15 is mounted in the second notch 114, threaded holes 151 are formed in two ends of the mounting strip 15 respectively, the fixing clip 14 comprises a clip tooth 141 and a flange 142, the flange 142 is pressed outside the rotor winding 13, and the clip tooth 141 is fixedly connected with the mounting strip 15 in a threaded mode.
In this embodiment, the fixing clip 14 is disposed at two ends of the iron core teeth 111 and includes the clip teeth 141 and the flange 142, where the flange 142 is pressed outside the rotor winding 13, and can form installation limit for the rotor winding 13, preventing the rotor winding 13 from shifting relative to the rotor core 11, the clip teeth 141 are provided with through holes 143, the clip teeth 141 are fixedly connected with the mounting strips 15 disposed in the iron core yoke 112 through the through holes 143 through bolts, and the clip teeth 141 can be fixed by the mounting strips 15, so that the relative positions between the clip teeth 141 and the rotor core 11 are fixed, and the structure of the clip teeth 141 is fixed, so that the flange 142 can also effectively fix the installation position of the rotor winding 13 on the rotor core 11, thereby improving the stability and reliability of the installation structure of the rotor winding 13 on the rotor core 11.
In one embodiment, the mounting bar 15 is a T-shaped bar, and the second notch 114 is a T-shaped slot, so that the mounting bar 15 and the second notch 114 have good assembly effect and can be effectively prevented from being separated from the second notch 114.
In one embodiment, a plurality of latches 141 are spaced apart and fixedly coupled by a flange 142. The latch 141 and the flange 142 may be integrally formed.
In one embodiment, the length of the corresponding mounting bar 15 disposed on the latch 141 is different from the lengths of the other latches 141, where the length of the corresponding mounting bar 15 disposed on the latch 141 is longer, and the length of the other latches 141 is shorter, because the mover coil 131 is not located on the iron core yoke 112, the latch 141 that is not disposed on the corresponding mounting bar 15 does not need an additional length to achieve the assembly with the mounting bar 15, and the length can be made shorter, which saves more material on one hand and does not affect the isolation effect of the latch 141 on the mover coil 131 on the other hand.
In one embodiment, the latch 141 is made of an insulating material, the width of the latch 141 is consistent with the width of the core teeth 111, and the latch 141 is inserted between the end of the core teeth 111 and the mover winding 13.
In this embodiment, the latch 141 is made of an insulating material and is inserted into the end of the iron core tooth 111, so that the iron core tooth 111 and the rotor coil 131 can be further isolated, and the outgoing line of the rotor coil 131 is effectively prevented from contacting the iron core tooth 111, so that the overall insulation and voltage resistance of the motor is synchronously enhanced.
In one embodiment, mover coil 131 includes inner winding ring 1311, outer winding ring 1312, and end winding 1313, and insulating slot paper 132 includes inner sheath 1321, outer sheath 1322, and end sheath 1323, inner sheath 1321 covering inner winding ring 1311, outer sheath 1322 covering outer winding ring 1312, and end sheath 1323 covering end winding 1313.
In this embodiment, the insulation slot paper 132 can form a good coating effect on the rotor coil 131, so that direct contact between the rotor coil 131 and the iron core teeth 111 is effectively avoided, and the motor has good insulation and voltage resistance.
In one embodiment, two outer jackets 1322 are provided, the two outer jackets 1322 are located at two sides of the inner jacket 1321, the outer jackets 1322 are connected with the inner jacket 1321 through bending sections 1324, the width of each outer jacket 1322 is half of that of the corresponding inner jacket 1321, the two outer jackets 1322 are spliced and coated on the outer winding ring 1312, two opposite sides of the rotor coil 131 are respectively coated with one insulating slot paper 132, and the width of each bending section 1324 is matched with the thickness of the rotor coil 131.
Referring to fig. 3 in combination, in this embodiment, the insulation paper 132 is formed by folding the insulation paper, the insulation paper is sheared according to the position C in fig. 3 and sheared to the dotted line position indicated by a, and then is folded according to the illustration at the folding positions a and B, when folding, reverse folding is required along the folding line at the position a, forward folding along the folding line at the position B means folding in the direction of the paper surface in fig. 3, and reverse folding means folding in the direction of the paper surface out of fig. 3. After the two outer protective layers 1322 located at two sides of the inner protective layer 1321 are located outside the winding outer ring 1312, and after the two outer protective layers 1322 are folded in half, the winding outer ring 1312 can be completely covered by the inner protective layer 1321, the winding inner ring 1311 can be completely covered by the winding inner protective layer 1321, the winding end 1313 of half is covered by the two end protective layers 1323 at two ends respectively, after one rotor coil 131 is covered by the two insulating slot papers 132, the whole inner side surface of the rotor coil 131 can be covered, and other surfaces except the outer side end surfaces, because the clamping teeth 141 are embedded between the end parts of the iron core teeth 111 and the rotor winding 13, the two outer side end surfaces of the rotor coil 131 can be covered by the two insulating slot papers 132 and the clamping teeth 141, the rotor coil 131 can be fully covered by the whole direction, the rotor coil 131 is completely located in a space formed by the two insulating slot papers 132 and the clamping teeth 141, the contact between the rotor coil 131 and the iron core 111 is effectively insulated, and the whole withstand voltage performance of the motor is enhanced.
In one embodiment, an insulating paper 132 is attached to the surface of the mover coil 131.
The insulation slot paper 132 can be adhered to the surface of the rotor coil 131 in an adhesive manner, and the insulation slot paper 132 can be tightly adhered to the surface of the self-adhesive winding in the heating and curing process of the self-adhesive winding in a heating and curing manner, so that a good protection effect is achieved.
According to an embodiment of the present invention, the linear motor includes a linear motor mover structure, which is the above-described linear motor mover structure.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. The utility model provides a linear electric motor rotor structure, its characterized in that includes rotor core (11) and rotor winding (13), rotor core (11) include iron core tooth (111), iron core yoke (112) and magnetic field generating device (12), rotor winding (13) are around establishing on iron core tooth (111), magnetic field generating device (12) set up the top and/or the bottom of iron core tooth (111), the length direction of magnetic field generating device (12) with the high direction of folding of rotor core (11) is unanimous, the magnetization direction of magnetic field generating device (12) with the magnetic field direction that produces after rotor winding (13) circular telegram is unanimous.
2. The linear motor rotor structure according to claim 1, characterized in that a first notch (113) is provided on a top surface of the core teeth (111) away from the core yoke (112), the magnetic field generating device (12) being embedded in the first notch (113); or, the magnetic field generating device (12) is stuck and fixed on the top surface of the iron core teeth (111) far away from the iron core yoke (112).
3. The linear motor rotor structure according to claim 1, wherein the core yoke (112) is provided with a receiving groove (115) at a side close to the core teeth (111), at least a part of the receiving groove (115) is provided corresponding to the core teeth (111), and the magnetic field generating device (12) is embedded in the receiving groove (115).
4. A linear motor mover structure according to claim 3, characterized in that at least part of the receiving grooves (115) are offset with respect to the core teeth (111) along the arrangement direction of the core teeth (111).
5. A linear motor mover structure according to claim 3, characterized in that the width of the accommodation groove (115) in the arrangement direction of the core teeth (111) is larger than the width of the core teeth (111) in the own arrangement direction.
6. Linear motor mover structure according to any of claims 1 to 5, characterized in that the magnetic field generating means (12) is a permanent magnet or an auxiliary coil; and/or the mover winding (13) is a self-adhesive winding.
7. The linear motor mover structure according to any one of claims 1 to 5, characterized in that the mover winding (13) includes a mover coil (131) and an insulation slot paper (132), the insulation slot paper (132) being disposed between the mover winding (13) and the core teeth (111) and forming an insulation interval for the mover winding (13) and the core teeth (111).
8. The linear motor mover structure according to claim 7, wherein the mover coil (131) has an inner cavity, the core teeth (111) are located in the inner cavity, a length dimension of the inner cavity is larger than a length dimension of the core teeth (111), a width dimension of the inner cavity is larger than a width dimension of the core teeth (111), a gap is formed between a cavity wall of the inner cavity and the core teeth (111), and the insulation pocket paper (132) is located in the gap.
9. The linear motor rotor structure according to claim 7, characterized in that a limiting structure is arranged on the rotor core (11), and the limiting structure forms limiting fit with the rotor winding (13) to limit the rotor winding (13) on the rotor core (11).
10. The linear motor rotor structure according to claim 9, wherein the limiting structure comprises a fixing clamp (14) and a mounting strip (15), a second notch (114) is formed in one side, far away from the iron core teeth (111), of the iron core yoke (112), the mounting strip (15) is mounted in the second notch (114), threaded holes (151) are formed in two ends of the mounting strip (15) respectively, the fixing clamp (14) comprises clamping teeth (141) and a flange (142), the flange (142) is pressed outside the rotor winding (13), and the clamping teeth (141) are fixedly connected with the mounting strip (15) in a threaded mode.
11. The linear motor mover structure according to claim 10, characterized in that the latch (141) is made of an insulating material, the width of the latch (141) is identical to the width of the core teeth (111), and the latch (141) is inserted between the end of the core teeth (111) and the mover winding (13).
12. The linear motor mover structure according to claim 7, wherein the mover coil (131) includes a winding inner ring (1311), a winding outer ring (1312), and winding end portions (1313), the insulating slot paper (132) includes an inner sheath (1321), an outer sheath (1322), and end portion sheaths (1323), the inner sheath (1321) covers the winding inner ring (1311), the outer sheath (1322) covers the winding outer ring (1312), and the end portion sheaths (1323) cover the winding end portions (1313).
13. The linear motor rotor structure according to claim 12, wherein the number of the outer sheaths (1322) is two, the two outer sheaths (1322) are located at two sides of the inner sheath (1321), the outer sheaths (1322) are connected with the inner sheath (1321) through bending sections (1324), the width of the outer sheath (1322) is half of that of the inner sheath (1321), the two outer sheaths (1322) are spliced and coated on the winding outer ring (1312), and two opposite sides of the rotor coil (131) are coated with one insulating slot paper (132).
14. The linear motor mover structure according to claim 12, wherein the insulating slot paper (132) is attached to a surface of the mover coil (131).
15. A linear motor comprising a linear motor mover structure, characterized in that the linear motor mover structure is a linear motor mover structure as claimed in any one of claims 1 to 14.
CN202311318005.4A 2023-10-11 2023-10-11 Linear motor rotor structure and linear motor Pending CN117277722A (en)

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