CN108604843B - Coreless motor structure - Google Patents

Coreless motor structure Download PDF

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Publication number
CN108604843B
CN108604843B CN201580084803.2A CN201580084803A CN108604843B CN 108604843 B CN108604843 B CN 108604843B CN 201580084803 A CN201580084803 A CN 201580084803A CN 108604843 B CN108604843 B CN 108604843B
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CN
China
Prior art keywords
fixing
magnetic
disposed
frame
stator
Prior art date
Application number
CN201580084803.2A
Other languages
Chinese (zh)
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CN108604843A (en
Inventor
庄斐志
Original Assignee
巨铠实业股份有限公司
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Application filed by 巨铠实业股份有限公司 filed Critical 巨铠实业股份有限公司
Priority to PCT/CN2015/000817 priority Critical patent/WO2017088082A1/en
Publication of CN108604843A publication Critical patent/CN108604843A/en
Application granted granted Critical
Publication of CN108604843B publication Critical patent/CN108604843B/en

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Classifications

    • 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • 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

Abstract

A coreless motor structure (1) comprises a stator (10, 10A) and a rotor (20, 20A), wherein the stator is provided with a fixed frame (120, 120A) and a plurality of coils (130, 130A), the fixed frame is provided with a body (121, 121A) and a plurality of frames (122, 122A), the frames are arranged on the body, each frame is provided with a first fixed part (1221) and a second fixed part (1222), the first fixed part is arranged above one side of the frame, the second fixed part is arranged above the other side of the frame relative to the first fixed part, the coils are respectively wound on the frames and clamped by the first fixed part, the second fixed part and the body, one side of the body is provided with the coils, the other side of the body relative to the coils is provided with a first groove (1210, 1210A), and the rotor is positioned on at least one side of the stator. The coreless motor structure can adopt an automatic winding production mode, so that the labor cost can be saved, and the production efficiency and the qualification rate can be improved.

Description

Coreless motor structure

Technical Field

The invention relates to the field of motors with axial air gap multi-phase motor structures, in particular to a stator structure in an iron-core-free motor structure.

Background

With the increasing change of science and technology, people have higher requirements on the efficacy of various things, and with the humanized thinking mode, people continuously research how to enable various matters in life to be processed more efficiently, more economically and more safely, so that the invention is continuously developed, the efficiency is improved, the energy is more saved and the safety is higher, and the invention also becomes an ideal invention pursued by people.

With the progress of the times, the development of the motor technology is becoming mature, and various applications in the related fields are becoming more and more extensive, and the motor and the generator are becoming the most important of various common applications, and in recent years, the concept of high efficiency and strong energy saving is gradually emphasized, and various motors emphasizing high power efficiency and low consumption are appearing on the market.

In order to provide energy saving and high efficiency for the motor, the driving device of the dc variable frequency motor is used in recent years, generally, the dc variable frequency motor is driven by a control circuit of the inverter, the control circuit senses the position of the rotor of the motor, and then controls the switching of the inverter according to the position of the rotor of the motor to drive the permanent magnet brushless motor.

In the conventional art, the permanent magnet brushless motor can be divided into a radial air gap motor and an axial air gap motor, and the coils of the conventional axial air gap flux motor are manufactured by respectively winding a plurality of coils to form a coil body, the plurality of coil bodies are manufactured by using self-adhesive wires, so that the plurality of coil bodies are not easily separated, the adhered coil bodies are respectively fixed on a stator, the plurality of coil bodies are roughly divided into coil bodies with the same electrical property as the number of the motors, and the coil groups with different electrical properties are electrically connected by mutually connecting wires to manufacture the motor structure.

The motor structure manufactured by the above conventional method needs to manufacture the coils separately, which requires a lot of manpower, when manufacturing the coils, the coils are usually self-adhesive wires for stable shape, and the coils are fixed and positioned by using adhesive, which increases the cost. For automatic winding, plastic wire slots like transformers are used to hold the coils, but the slots have a thickness that increases the distance between the magnets and the coils in order to keep the magnets from colliding with the slots, which significantly reduces the air gap flux density and severely affects the motor characteristics, and therefore is not used.

Disclosure of Invention

The invention provides a coreless motor structure, which solves the technical problem that a fixed frame is utilized, the fixed frame is provided with a plurality of frame bodies, each fixed frame is provided with two fixed parts for effectively limiting the position of a fixed coil, so that the coil can be intensively fixed and cannot easily fall off, therefore, a general enameled wire is not needed to be used by using a self-adhesive wire, and an automatic winding mechanism can be utilized to wind the plurality of frame bodies to form a complete stator structure, so that the cost is saved, the production efficiency and the qualification rate are improved, and the motor characteristic is not influenced.

The object of the present invention is achieved by the following technical means.

In order to achieve the above-mentioned objects and effects, the present invention provides a coreless motor structure, comprising a stator and a rotor, wherein the stator has a fixed frame and a plurality of coils, the fixed frame has a body and a plurality of frames, the plurality of frames are disposed on the body, each frame has a first fixed portion and a second fixed portion, the first fixed portion is disposed on one side of the frame, the second fixed portion is disposed on the other side of the frame relative to the first fixed portion, upper edges of the first fixed portion and the second fixed portion protrude from the plurality of frames, the plurality of coils are respectively wound around the plurality of frames, the first fixed portion, the second fixed portion and the body, one side of the body is the plurality of coils, and the other side of the body relative to the plurality of coils is provided with a first groove; and the rotor is positioned at one side of the stator and is provided with a magnetic conduction seat and a first magnetic part, and the first magnetic part is arranged on the magnetic conduction seat.

The object of the invention can be further achieved by the following technical measures.

Preferably, in the coreless motor structure, the body is circular, the plurality of frame bodies are annularly disposed on the body, the first fixing portion and the second fixing portion are respectively located on the inner side and the outer side of the frame body in the radial direction, the first groove is an annular groove, the rotor rotationally moves relative to the stator, and a shaft rod is further disposed and penetrates through the stator and the rotor.

Preferably, in the coreless motor structure, the body is rectangular, the plurality of frame bodies are arranged in the body in a straight line, the first groove is a rectangular groove, and the mover moves linearly relative to the stator.

Preferably, in the coreless motor structure, a plurality of hollow portions are formed at the overlapping portion of the plurality of frame bodies of the body and the first groove.

Preferably, in the coreless motor structure, in the case of a multi-phase motor, a hook portion is further disposed on one side of the first fixing portion, so as to facilitate automatic winding of the motor.

Preferably, in the coreless motor structure, the first fixing portion and the second fixing portion are respectively disposed on a side of the plurality of frame bodies away from the body, an accommodating space is formed between the plurality of first fixing portions and the plurality of second fixing portions, the first magnetic member is located in the accommodating space, and a magnetic member is further disposed in the first groove.

Preferably, in the coreless motor structure, the first fixing portion and the second fixing portion are respectively disposed on a side of the plurality of frame bodies away from the body, an accommodating space is formed between the plurality of first fixing portions and the plurality of second fixing portions, a magnetic conduction member is further disposed in the accommodating space, and the first magnetic member is located in the first groove.

Preferably, in the coreless motor structure, the area surrounded by the frame body is a through hollow portion, so that the body forms a plurality of hollow portions in the plurality of frame bodies, the magnetic conductive member is provided with a plurality of protruding portions corresponding to the plurality of hollow portions, and the plurality of protruding portions are respectively embedded in the plurality of hollow portions.

Preferably, in the coreless electric structure, the first fixing portion and the second fixing portion are respectively disposed on a side of the plurality of frames away from the body, an accommodating space is formed between the plurality of first fixing portions and the plurality of second fixing portions, a second magnetic member is further disposed, the second magnetic member is disposed in the first groove, and the first magnetic member is disposed in the accommodating space, or the second magnetic member is disposed in the accommodating space, and the first magnetic member is disposed in the first groove.

Preferably, the coreless motor structure further includes a circuit board disposed on one side of the stator.

Preferably, the coreless motor structure further includes a housing and a plurality of blades, the housing has an upper housing and a lower housing, and is configured to cooperate with an upper bearing and a lower bearing, the upper housing is located above the magnetic conductive seat, the upper housing and the magnetic conductive seat are separated by a gap, the upper bearing is disposed, the upper housing is connected to the upper bearing and pivotally connected to the shaft rod, the upper housing is covered below the stator and the rotor, the lower housing is disposed below the stator, the lower housing is connected to the upper housing, the lower housing is connected to the lower bearing and pivotally connected to the shaft rod, and the blades are disposed around a periphery of the upper housing.

By the technical scheme, the coreless motor structure at least has the following advantages and beneficial effects:

1. by utilizing the design of the fixed frame of the stator, the stator can be used for a winding mode of an automatic iron-core-free motor structure without using a self-adhesive wire and using a common enameled wire, so that the cost is saved, the production efficiency is improved, and the difficulty of material preparation is reduced.

2. The frame body is used for winding the coil, and each frame body is provided with two fixing parts for effectively limiting and fixing the position of the coil, so that the cost of fixing the coil by using the viscose is reduced, and the production efficiency and the qualified rate are improved.

3. The air gap between the magnet and the coil on the frame body for winding the coil is not required to be enlarged compared with the original design without the fixed frame due to the arrangement of the fixed frame, and the motor characteristic is not influenced.

4. The fixing part of the frame body is provided with a clamping hook part, so that the line segment of the coil wound among the plurality of frame bodies can be further limited by the clamping of the clamping hook part, when the wire of the coil is wound on the frame body, the coil can be clamped on the clamping hook part, and the phenomenon that the coil wound on the frame body is loosened and fixed before another frame body is wound is avoided.

5. The position of the circuit board can be changed according to the form of the circuit board, and the space utilization inside the motor is increased.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1A is a schematic view of a structure of a coreless motor according to a first embodiment of the present invention;

fig. 1B is a stator schematic view of a coreless motor structure according to a first embodiment of the present invention;

fig. 1C is a schematic view of a housing of a coreless motor structure of the first embodiment of the present invention;

fig. 2 is a schematic view of a stationary frame of a coreless motor structure according to a second embodiment of the present invention;

fig. 3 is a schematic view of a fixing member of a coreless motor structure according to a third embodiment of the present invention;

fig. 4A is a schematic view of a second magnetic member of a coreless motor structure according to a fourth embodiment of the present invention;

fig. 4B is a schematic diagram of a second magnetic member of a coreless motor structure according to a fourth embodiment of the present invention;

fig. 5A is a schematic sectional view of a coreless motor structure of a fifth embodiment of the present invention;

fig. 5B is a schematic view of a housing of a coreless motor structure according to a fifth embodiment of the present invention;

fig. 6A is a schematic structural use view of a coreless motor according to a sixth embodiment of the present invention;

FIG. 6B is a cross-sectional view of the coreless motor structure of FIG. 6A;

fig. 7 is a schematic structural use view of a coreless motor according to a seventh embodiment of the present invention;

fig. 8 is a schematic view of a structure of a coreless motor of an eighth embodiment of the present invention;

fig. 9 is a schematic view of a structure of a coreless motor of the ninth embodiment of the present invention;

fig. 10 is a schematic view of a structure of a coreless motor according to a tenth embodiment of the present invention.

[ description of main element symbols ]

1: coreless motor structure 10: stator

10A: stator 110: magnetic conduction piece

110A: the magnetic conduction piece 111: projecting part

112: perforation 120: fixing frame

120A: fixing the frame 121: body

121A: a body 1210: the first groove

1210A: first groove 1211: hollow-out part

122: frame 122A: frame body

1221: first fixing portion 12210: hook part

12211: first notch portion 1222: second fixed part

1223: the accommodating space 12220: second notch part

130: first coil 130A: first coil

140: fixing column 140A: fixing column

141: the fixing member 142: fixed body

143: the trepan 144: electric connection column

160: collar 20: mover

20A: the mover 210: magnetic conduction seat

210A: a magnetic conduction seat 220: first magnetic part

220A: first magnetic member 221: placing hole

30: shaft rod 310: upper bearing

320: the lower bearing 40: circuit board

41: the circuit board 410: perforation

50: the outer shell 510: upper shell

520: the lower case 530: second groove

51: the housing 511: upper shell

521: the lower case 60: second magnetic part

60A: second magnetic member 70: magnetic induction assembly

710: fixing seat 80: heat radiation fan

810: the impeller 820: fan casing

830: the fan frame 90: ceiling fan

910: fan blade

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the coreless motor structure according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

In view of the problems of the prior art, the prior art needs to manufacture coils separately, which requires a lot of manpower, and during the manufacturing of coils, self-adhesive wires are needed for the stable shape of the coils, and adhesive is needed to fix the coils on the stator, thereby increasing the manufacturing cost, and in addition, the manufacturing personnel can cause errors in positioning and electrical connection of the coils, thereby causing trouble in manufacturing the motor, and if the design of the winding wire frame is adopted for automatic winding, the air gap between the magnet and the coils is increased due to the thickness of the wire frame, thereby causing low performance of the motor, and when the multi-phase motor is wound, the coils are not wound by one slot and one slot along with adjacent coils, so that when a next set of coils is wound across the slots after each winding of the coils of the slots, the lead wire is pulled improperly, thereby possibly causing loosening of the coils, and solving the prior art problems, how to improve the development and effectively improve the overall production efficiency, yield, cost reduction, inventory and delivery period of the motor is a common endeavor, and is an invention with novelty and advancement.

Fig. 1A to fig. 1C are exploded perspective views, schematic stator diagrams and schematic housing diagrams of a coreless motor structure according to a first embodiment of the present invention; as shown in the drawings, the coreless motor structure 1 of the present embodiment mainly includes a stator 10 and a mover 20, and the coreless motor structure of the present embodiment may be used for a linear motor or a rotary motor.

In view of the above, and taking a rotating electrical machine as an example for explanation, the stator 10 includes a fixed frame 120 and a plurality of coils 130, the fixed frame 120 includes a main body 121 and a plurality of frame bodies 122, the plurality of frame bodies 122 are disposed on the main body 121, each of the frame bodies 122 is provided with a first fixed portion 1221 and a second fixed portion 1222, the first fixed portion 1221 is disposed on one side of the frame body 122, the second fixed portion 1222 is disposed on the other side of the frame body 122 relative to the first fixed portion 1221, upper edges of the first fixed portion 1221 and the second fixed portion 1222 protrude from the plurality of frame bodies 122, the plurality of coils 130 are respectively wound between the plurality of frame bodies 122, the first fixed portion 1221, the second fixed portion 1222 and the main body 121, one side of the main body 121 is the plurality of coils 130, and the main body 121 is provided with a first groove 1210 relative to the other side of the plurality of coils 130, the mover 20 is disposed at one side of the stator 10, the mover 20 has a magnetic conductive base 210 and a first magnetic member 220, and the first magnetic member 220 is disposed on the magnetic conductive base 210.

Referring to fig. 1B, the present embodiment is described as applied to a rotating electrical machine as a main embodiment, and the structure thereof is that a shaft 30 is inserted through the stator 10 and the mover 20, a magnetic conduction member 110 is further disposed, the magnetic conduction member 110 is circular, the fixed frame 120 is disposed on the magnetic conduction member 110, one side of the main body 121 is the plurality of frame bodies 122, the other side (the back side as shown in the figure) of the range surrounded by the main body 121 and the plurality of coils 130 is provided with the first groove 1210, the first groove 1210 is an annular groove, the first groove 1210 corresponds to the plurality of coils 130, the magnetic conduction member 110 is disposed in the first groove 1210 to reduce the gap between the magnetic conduction member 110 and the plurality of coils 130, so that the gap is as small as possible, furthermore, the area surrounded by the frame body 122 is a penetrating hollow portion 1211, that is, the main body 121 forms a plurality of hollow portions 1211 in the plurality of frame bodies 122, the hollow portion 1211 is communicated with the first groove 1210, the magnetic conductive member 110 is provided with a plurality of protruding portions 111 corresponding to the plurality of hollow portions 1211, the plurality of protruding portions 111 are annularly arranged on the magnetic conductive member 110, the plurality of protruding portions 111 can be respectively embedded in the plurality of hollow portions 1211, and the magnetic conductive member 110 is integrally embedded in the first groove 1210, so that a gap between the first magnetic member 220 and the magnetic conductive member 110 is reduced, and thus air gap magnetic flux is increased, and motor performance is improved.

In this embodiment, the body 121 is circular, the plurality of frame bodies 122 are disposed on the body 121 in a surrounding manner, the frame bodies 122 are fan-shaped, the first fixing portion 1221 is disposed at a tip of an inner side of the fan-shaped, the second fixing portion 1222 is disposed at an arc of an outer side of the fan-shaped, that is, the first fixing portion 1221 and the second fixing portion 1222 are respectively disposed at an inner side and an outer side of the radial direction of the frame body 122, the coil 130 is wound around the periphery of the frame body 122, the coil 130 is similarly fan-shaped after being wound, the coil 130 is wound through a lower edge of the first fixing portion 1221 and a lower edge of the second fixing portion 1222, so that the coil 130 can be fixed between the body 121, the first fixing portion 1221 and the second fixing portion 1222, wherein the body 121 and the frame body 122 are integrally formed, and the magnetic conductive member 110 is made of a yoke material.

Referring to fig. 1A, a circuit board 40 is further disposed, the circuit board 40 is disposed on a plurality of fixing posts 140 of the stator 10, the fixing posts 140 are disposed around the inner sides of the first fixing portions 1221 and on the body 121, the fixing post 140 is integrally formed with the body 121, the circuit board 40 has a through hole 410, the shaft 30 penetrates the through hole 410, and the circuit board 40 can be electrically connected to the plurality of coils 130, the circuit board 40 is disposed in the containing hole 221 of the annular body of the first magnetic member 220, so that the total volume of the coreless motor structure 1 is not increased when the stator 10, the mover 20 and the circuit board 40 are combined.

The first magnetic member 220 is located above the plurality of coils 130 of the stator 10, the first fixing portion 1221 and the second fixing portion 1222 are disposed on the coil 130, the aperture of the placing hole 221 of the first magnetic member 220 is larger than the inner diameter surrounded by the plurality of first fixing portions 1221, the outer diameter of the first magnetic member 220 is smaller than the outer diameter surrounded by the second fixing portion 1222, the first fixing portion 1221 and the second fixing portion 1222 are respectively disposed on a side of the plurality of frame bodies 122 away from the body 121 (i.e., above the inner and outer sides), so that a containing space 1223 is formed between the first fixing portion 1221 and the second fixing portion 1222, the first magnetic member 220 can be placed in the containing space 1223 between the plurality of first fixing portions 1221 and the plurality of second fixing portions, the mover 20 rotates relative to the stator 10 within the containing space 1223, and the first magnetic member 220 can be closer to the plurality of coils 130, and is not affected by the thickness of the first fixing portion 1221 and the second fixing portion 1222, so that the air gap flux is maintained, and the economical manufacturing efficiency of automatic winding is achieved.

The first magnetic member 220 can also be disposed below the stator 10 (not shown in the figures), that is, the first magnetic member 220 is located in the first groove 1210 of the stator 10, and an air gap is formed between the first magnetic member 220 and the first groove 1210 of the stator 10, and the magnetic conductive member 110 is disposed above the stator 10 (not shown in the figures), that is, the magnetic conductive member 110 is disposed in the accommodating space 1223, further, the plurality of protrusions 111 of the magnetic conductive member 110 are directly embedded in the plurality of hollow portions 1211 from the accommodating space 1223 of the frame 122, so that the magnetic conductive member 110 is integrally embedded in the accommodating space 1223, the gap between the first magnetic member 220 located in the first groove 1210 and the magnetic conductive member 110 is reduced, and the mover 20 rotates in the first groove 1210 relative to the stator 10, which has the same function as that described in the previous paragraph, and will not be described again.

Referring to fig. 1C, a mover position sensing assembly 70 is further disposed, the mover position sensing assembly 70 is disposed on the circuit board 40 and electrically connected to the circuit board 40, the mover position sensing assembly 70 is disposed inside the disposing hole 221 of the first magnetic member 220 and is used for detecting a rotation angle of the inside of the first magnetic member 220 to provide position information of the driver related to the mover 20, and the mover position sensing assembly 70 may be a hall assembly. The structure of the embodiment includes the stator 10, the mover 20 and the shaft 30, the shaft 30 penetrates through the stator 10 and the mover 20, and a certain gap is formed between the stator 10 and the mover 20, so that the mover 20 can freely rotate around the shaft 30 without being limited by the stator 10, the circuit board 40 is electrically connected to the coils 130 of the stator 10, and the circuit board 40 conducts current to enter the coils 130, so that the coils 130 and the first magnetic member 220 of the mover 20 generate acting force to drive the first magnetic member 220 to rotate.

Particularly, in the present embodiment, by using the structural design of the stator 10, the magnetic conducting member 110 of the stator 10 has the plurality of protrusions 111 arranged in a ring shape, so that the magnetic conducting member 110 is closer to the first magnetic member 220 of the mover 20, the magnetic conducting member 110 is used as a magnetic yoke to increase the air gap flux density between the stator 10 and the mover 20, the plurality of coils 130 are wound on the fixing frame 120, and each fixing frame 120 is provided with the first fixing portion 1221 and the second fixing portion 1222 to effectively limit the position of fixing the coil 130, so that the coils 130 can be fixed and concentrated more densely, so that the plurality of coils 130 can be wound by using a common enameled wire, and an automatic winding machine is used to complete the winding, thereby avoiding the processes of positioning and wire bonding required by using a separate coil.

The embodiment may be a coreless motor structure driven by the shaft 30, further providing a housing 50, where the housing 50 has an upper housing 510 and a lower housing 520, and is disposed by matching with the upper bearing 310 and the lower bearing 320, the upper housing 510 is located above the magnetic conductive base 210, a gap is formed between the upper housing 510 and the magnetic conductive base 210, the upper bearing 310 is disposed between the upper housing 510 and the magnetic conductive base 210, the upper housing 510 is connected to the upper bearing 310 and pivotally connected to the shaft 30, the upper housing 510 is downward covered on the stator 10 and the mover 20, the lower housing 520 is disposed below the stator 10, the lower housing 520 is connected to the upper housing 510, and the lower housing 520 is connected to the lower bearing 320 and pivotally connected to the shaft 30.

The coreless motor structure 1 of the present embodiment may be an inner rotor motor, the shaft 30 penetrates the stator 10, the stator 10 is disposed on the lower housing 520, and the rotor 20 is fixed to the shaft 30, when the rotor 20 is affected by the stator 10, the rotor 20 starts to rotate, and the shaft 30 is driven to rotate by the rotor 20, when the shaft 30 rotates, the upper bearing 310 and the lower bearing 320 are used to support a rotation function for maintaining a central position of a shaft and controlling the rotation, and further a device required to be driven is disposed on the shaft 30, and the device is driven to operate by a rotation manner, and the stator 10 and the lower housing 520 of the present embodiment may be an integrally formed structure.

The coreless motor structure 1 of the present embodiment may be an external rotor motor, the shaft 30 is fixed to the stator 10, the rotor 20 is fixed to the upper housing 510, when the rotor 20 is influenced by the stator 10, the rotor 20 starts to rotate, and the upper housing 510 is driven by the rotor 20 to rotate, and the upper bearing 310 and the lower bearing 320 are used for supporting and rotating to maintain a central position of the rotor 20 and control the rotation.

Please refer to fig. 2, which is a schematic view of a fixing frame of a coreless motor structure according to a second embodiment of the present invention; as shown in the figures, the difference between the present embodiment and the first embodiment is that the first fixing portion 1221 and the second fixing portion 1222 is further provided with a hook portion 12210, the hook portion 12210 is disposed on one side of the innermost end of the first fixing portion 1221, so that a line segment of the coil 130 wound between the plurality of frames 122 can be further limited by the hook portion 12210, when the coil 130 is wound around the frame 122, the coil 130 can be clamped on the hook portion 12210, and the coil 130 wound around the frame 122 cannot be loosened and fixed before another frame 122 is wound.

The first fixing portion 1221 and the second fixing portion 1222 are disposed adjacent to two opposite sides of the frame 122 and respectively have a first notch 12211 and a second notch 12220, the first notch 12211 and the second notch 12220 are higher than the frame 122, so that the coil 130 will be clamped around the connection between the first fixing portion 1221 and the frame 122 and the connection between the second fixing portion 1222 and the frame 122 when being wound, and then the first fixing portion 1221 and the second fixing portion 1222 are pressed against the coil 130 to limit the coil 130, so that the coil 130 will not cross over the frame 122, so as to compact the size of the coil 130, and increase the bonding area of the coil 130 to the frame 122 and the body 121, thereby increasing the strength of the fixing frame 120.

Please refer to fig. 3, which is a schematic view of a fixing member of a coreless motor structure according to a third embodiment of the present invention; as shown in the figures, the difference between the present embodiment and the second embodiment is that a collar 160 is further disposed, the collar 160 is disposed at the center of the body 121, so that the wire of the coils 130 is drawn and wound along the collar 160 at the center, so that the coils 130 on the stator 10 structure are not cross-knotted at the center when the winding is completed, and the subsequent whole wire manufacturing can be better processed, and the collar 160 is provided to facilitate the shaft rod 30 to penetrate the stator 10, wherein the collar 160 and the body 121 can be an integral structure, and a fixing member 141 is further disposed, the fixing member 141 has a fixing body 142 and a plurality of fixing posts 140A, the fixing body 142 has a sleeve hole 143, the sleeve hole 143 is sleeved on the fixing member 160, and the fixing member 141 is further fixed on the body 121, further, a plurality of electrical connection posts 144 are disposed on the fixing body 142, and the electrical connection posts 144 provide electrical connection ends for the coils 130 to be electrically connected to the circuit board 40.

The invention can effectively improve the efficiency of manufacturing the stator 10 by utilizing the coreless motor structure, save the steps and cost of using self-adhesive wires and adopting adhesive to fix the wires, and also can reduce the errors of coil positioning and electrical connection caused by personnel carelessness.

Please refer to fig. 4A and 4B, which are schematic views illustrating a coreless motor according to a fourth embodiment of the present invention; as shown in the figures, the difference between the present embodiment and the first embodiment is that a second magnetic member 60 is further disposed, the second magnetic member 60 is located on the other side of the stator 10 relative to the first magnetic member 220 to replace the magnetic conductive member 110, the lower housing 520 has a second groove 530, the fixing frame 120 has the first groove 1210 corresponding to the second groove 530, the second magnetic member 60 is located in a space sandwiched between the second groove 530 and the first groove 1210, the second magnetic member 60 is disposed on the second groove 530 and corresponds to the first groove 1210, a gap is formed between the second magnetic member 60 and the main body 121, when the mover 20 drives the housing 50 to move, the housing 50 drives the second magnetic member 60 to move simultaneously, the movement of the second magnetic member 60 is not interfered by the fixing frame 120, wherein the second magnetic member 60 is located in the first groove 1210, the first magnetic member 220 is located in the accommodating space 1223, or the second magnetic member 60 is located in the accommodating space 1223, so that the first magnetic member 220 is located in the first groove 1210, and positions of the first magnetic member 220 and the second magnetic member 60 can be exchanged.

Fig. 5A to 5B are an exploded perspective view, a housing view and a cross-sectional view of a coreless motor according to a fifth embodiment of the present invention; as shown in the drawings, the present embodiment is a fifth embodiment, and the difference between the present embodiment and the first embodiment is that a circuit board 41 is disposed below the stator 10, if it is necessary to further dispose the mover position sensing assembly 70 on the circuit board 41, the protrusion 111 of the magnetic conducting member 110 is disposed through a through hole 112, the through hole 112 corresponds to the mover position sensing assembly 70, the mover position sensing assembly 70 senses the position of the first magnetic member 220 through the through hole 112 to detect the rotation state of the mover 20, the circuit board 41 is electrically connected to the plurality of coils 130, and the lower bearing 320 is disposed between the upper bearing 310 and the stator 10.

As mentioned above, the circuit board of the coreless motor structure 1 can be disposed above the stator 10 (as shown in the first embodiment) or disposed below the stator 10 (as shown in the fifth embodiment), so as to increase the space utilization inside the coreless motor structure 1, but the invention is not limited to the position where the circuit board 41 is disposed, the circuit board 41 is disposed on one side (upper, lower, inner and outer) of the stator 10, the circuit board 41 can also be electrically connected to the plurality of coils 130 of the stator, and the position of the circuit board of the invention can be adjusted according to the needs of the user.

The present embodiment is a housing-driven coreless motor structure, further comprising a housing 51, wherein the housing 51 has an upper housing 511, and optionally a lower housing 521, and is configured by cooperating with the upper bearing 310 and the lower bearing 320, the upper housing 511 is disposed on the magnetic conductive base 210, an upper bearing 310 and a lower bearing 320 are disposed between the upper housing 510 and the magnetic conductive base 210, the upper housing 510 is pivotally connected to the shaft 30 via the upper bearing 310 and the lower bearing 320, and the upper housing 511 covers the stator 10 and the mover 20 downward. When a lower housing 521 is provided, the lower housing 520 is located below the stator 10, the lower housing 520 is connected to the upper housing 510, wherein the stator 10 is fixed on the shaft 30, and the mover 20 is pivotally connected to the shaft 30, when the mover 20 is affected by the stator 10, the mover 20 starts to rotate, and the housing 51 is driven to rotate by the mover 20, and when the housing 51 rotates, the upper bearing 310 and the lower bearing 320 are supported to rotate, so as to maintain the central position of the shaft and control the rotation.

Referring to fig. 6A and 6B together, which are a sixth embodiment of the present invention, the coreless motor structure 1 of the present embodiment is mainly applied to a heat dissipation fan 80, the heat dissipation fan 80 is described as an embodiment by the coreless motor structure 1, a fan wheel 810, a fan housing 820 and a fan frame 830, the stator structure 10 is disposed in the fan frame 830, the fan housing 820 functions as the magnetic conductive seat 210, the magnetic member 220 is disposed in the fan housing 820, the fan wheel 810 is sleeved in the fan housing 820, and is disposed in a bearing of a central bearing seat of the fan frame 830 in combination with a shaft rod and is disposed in the fan frame 830, and the coreless motor structure 1 of the present embodiment is suitable for various types of heat dissipation fans.

Fig. 7 is a schematic view of a coreless motor according to a seventh embodiment of the present invention; as shown in the drawings, the coreless motor structure 1 of the present embodiment is mainly applied to a ceiling fan 90, the coreless motor structure 1 is a motor structure of the first embodiment, the ceiling fan 90 is composed of the coreless motor structure 1 and a plurality of fan blades 910, the plurality of fan blades 910 are annularly arranged on the periphery of the upper housing 510, the coreless motor structure 1 of the present embodiment is suitable for ceiling fans of various types, and the shape and the number of the plurality of fan blades 910 are not limited.

In view of the above, the sixth and seventh embodiments of the present invention describe that the coreless motor structure 1 has an advantage in that the first magnetic member 220 and the second magnetic member 60 can be respectively accommodated in the first groove 1210 and the accommodating space 1223 of the fixed frame 120 of the stator 10, so that the overall structure of the stator 10 is thinned, and an iron core portion of a stator of a conventional coreless motor is not required, so that the cost is low, and therefore, the coreless motor structure 1 of the present invention is suitable for various types of heat dissipation fans, core internal structures of ceiling fans and suspension fans (the stator 10, the mover 20 and the shaft rod 30), and the present invention does not limit external devices and functions of the coreless motor structure 1, and can be changed according to user requirements.

Please refer to fig. 8, which is a schematic diagram illustrating a coreless motor according to an eighth embodiment of the present invention; as shown in the figures, the difference between the present embodiment and the first embodiment is that the present embodiment is applied to a linear motor, which includes a stator 10A and a mover 20A, the stator 10A has a fixed frame 120A and a plurality of coils 130A, the fixed frame 120A has a body 121A and a frame 122A, the body 121A is rectangular, the frame 122A is disposed on the body 121A in series, the frame 122A is disposed with the plurality of coils 130A, the frame 122A is the same as the frame structure of the first embodiment and is not described again, the mover 20A is disposed on the stator 10A, the mover 20A has a magnetic conductive seat 210A and a first magnetic member 220A, the magnetic conductive seat 210A is disposed on the first magnetic member 220A, the magnetic conductive seat 210A and the first magnetic member 220A are rectangular corresponding to the frame 120A, except that the overall external structures of the stator 10A and the mover 20A are rectangular, other arrangement and functions are the same as those of the first embodiment, and thus are not described again.

In addition, in the present embodiment, the stator 10A is not moved, but the mover 20A moves in the direction of the serial arrangement of the coils 130A of the stator 10A, i.e. the mover 20A moves linearly with respect to the stator 10A, or the mover 20A and the stator 10A can be used interchangeably, i.e. the mover 20A is not moved, but the stator 10A moves with respect to the mover 20A, and the same functions as those of the first embodiment are generated, and thus, the description thereof is omitted.

Please refer to fig. 9, which is a schematic diagram of a coreless motor according to a ninth embodiment of the present invention; as shown in the figure, the embodiment further includes a magnetic conducting member 110A, the magnetic conducting member 110A is rectangular, the other side of the body 121A opposite to the plurality of coils 130A is provided with a first groove 1210A, the first groove 1210A is a rectangular groove, the magnetic conducting member 110A is disposed in the first groove 1210A of the stator 10A, and further, the magnetic conducting member 110A may be provided with a plurality of protruding portions (not shown) according to needs, and the first groove 1210A may also be provided with a plurality of hollow portions (not shown) opposite to the protruding portions, so that the protruding portions can be embedded in the hollow portions.

Please refer to fig. 10, which is a schematic diagram of a coreless motor according to a tenth embodiment of the present invention; as shown in the figure, the second magnetic member 60A is further disposed on the other side of the first magnetic member 220A opposite to the stator 10A, the magnetic conductive member 110A is removed, the second magnetic member 60A is added, and the second magnetic member 60A is embedded in the first groove 1210A.

To sum up, the present invention is a coreless motor structure, wherein each frame body is provided with a first fixing portion and a second fixing portion, which can effectively limit the position of the coil, so that the coil can be fixed in a centralized manner, without using self-adhesive wire for winding, and the electrical connection between the coils is easy due to the winding manufacturing method, thereby reducing the errors in coil positioning and electrical connection caused by personnel carelessness, and without using adhesive to fix the coil, thereby reducing the cost, saving the labor cost, and improving the production efficiency and yield, and because the coil is mainly fixed by the first fixing portion and the second fixing portion in the axial direction, the frame body is mainly responsible for maintaining the shape of the coil, and the design of the first groove is added, the magnetic body can be similar to the coil without fixing the frame, the air gap between the magnet and the coil is not required to be enlarged due to the arrangement of the fixed frame, the motor characteristic is not influenced, the hook part is arranged on the first fixed part, the line segment of the coil wound among the plurality of frames can be further limited by the clamping of the hook part, when the wire of the coil is wound on the frame, the coil can be clamped on the hook part, and the phenomenon that the coil of the wound frame is loosened and fixed before the other frame is wound is avoided.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (11)

1. A coreless motor structure, comprising:
a stator having a fixed frame and a plurality of coils, the fixed frame having a body and a plurality of frame bodies disposed at one side of the body, the body and the plurality of frame bodies are integrally formed, the plurality of frame bodies are respectively provided with a first fixing part and a second fixing part at one side far away from the body, the first fixing part is arranged on one side of the frame body, the second fixing part is arranged on the other side of the frame body relative to the first fixing part, the upper edges of the first fixing part and the second fixing part protrude out of the frame body, one side of the body provided with the plurality of frame bodies is wound with the plurality of coils, the wire of the coils is further drawn and respectively wound among the plurality of frame bodies, the first fixing part, the second fixing part and the body, and a first groove is arranged on the other side of the body opposite to the other side on which the coils are wound; and
the rotor is positioned on one side of the stator and provided with a magnetic conduction seat and a first magnetic part, the first magnetic part is arranged on the magnetic conduction seat, an accommodating space is formed between the first fixing parts and the second fixing parts, the first magnetic part is positioned in the accommodating space, and gaps are formed between the first magnetic part and the coils.
2. The coreless motor structure of claim 1, wherein the body is circular, the plurality of frame bodies are annularly disposed on the body, the first fixing portion and the second fixing portion are respectively disposed on an inner side and an outer side of the frame bodies in a radial direction, the first groove is an annular groove, the mover is rotationally movable relative to the stator, and a shaft is further disposed through the stator and the mover.
3. The coreless motor structure of claim 1, wherein the body is rectangular, the plurality of frames are arranged in the body in a row, the first groove is a rectangular groove, and the mover moves linearly with respect to the stator.
4. The coreless motor structure of claim 1, wherein a plurality of hollowed-out portions are formed at the overlapping portion of the plurality of frames and the first groove of the body.
5. The coreless motor structure of claim 2, wherein a hook portion is further provided in a case of a multi-phase motor, the hook portion being provided at one side of the first fixing portion to facilitate automatic winding of the motor.
6. The coreless motor structure of claim 1, further comprising a magnetic conductive member disposed in the first recess.
7. The coreless motor structure of claim 6, wherein the area surrounded by the frame is a through hollow portion, so that the body forms a plurality of hollow portions in the plurality of frames, the magnetic conductive member is provided with a plurality of protruding portions corresponding to the plurality of hollow portions, and the plurality of protruding portions are respectively embedded in the plurality of hollow portions.
8. The coreless motor structure of claim 1, further comprising a second magnetic member, wherein the second magnetic member is located in the first recess, and the first magnetic member is located in the receiving space, or wherein the second magnetic member is located in the receiving space, and the first magnetic member is located in the first recess.
9. The coreless motor structure of claim 1, further comprising a circuit board disposed at one side of the stator.
10. The coreless motor structure of claim 2, further comprising a housing and a plurality of blades, wherein the housing has an upper housing and a lower housing, and is configured to cooperate with an upper bearing and a lower bearing, the upper housing is located above the magnetic conductive base, the upper housing is separated from the magnetic conductive base by a gap, the upper bearing is disposed, the upper housing is connected to the upper bearing and pivotally connected to the shaft, the upper housing covers the stator and the mover downward, the lower housing is disposed below the stator, the lower housing is connected to the upper housing, the lower housing is connected to the lower bearing and pivotally connected to the shaft, and the plurality of blades are disposed around a periphery of the upper housing.
11. A coreless motor structure, comprising:
a stator having a fixed frame and a plurality of coils, the fixed frame having a body and a plurality of frames, the plurality of frames being disposed on the body, each frame having a first fixing portion and a second fixing portion, the first fixing portion being disposed on one side of the frame, the second fixing portion being disposed on the other side of the frame with respect to the first fixing portion, upper edges of the first fixing portion and the second fixing portion protruding from the plurality of frames, wires of the plurality of coils being drawn to be wound between the plurality of frames, the first fixing portion, the second fixing portion and the body, respectively, one side of the body being the plurality of coils, and the other side of the body being disposed with respect to the plurality of coils being a first groove; and
the rotor is positioned on one side of the stator and provided with a magnetic conduction seat and a first magnetic part, and the first magnetic part is arranged on the magnetic conduction seat;
the first fixing portion and the second fixing portion are respectively disposed on one side of the plurality of frames away from the body, an accommodating space is formed between the plurality of first fixing portions and the plurality of second fixing portions, a magnetic conduction member is further disposed in the accommodating space, and the first magnetic member is disposed in the first groove.
CN201580084803.2A 2015-11-25 2015-11-25 Coreless motor structure CN108604843B (en)

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US10141803B2 (en) * 2017-01-11 2018-11-27 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US10186922B2 (en) 2017-01-11 2019-01-22 Infinitum Electric Inc. System and apparatus for axial field rotary energy device

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JP2009011086A (en) * 2007-06-28 2009-01-15 Daikin Ind Ltd Armature of axial gap type rotating electric machine
JP5359112B2 (en) * 2008-08-20 2013-12-04 ダイキン工業株式会社 Axial gap type rotating electrical machine and compressor using the same
JP5306411B2 (en) * 2011-05-23 2013-10-02 三菱電機株式会社 Rotating electric machine
JP5747672B2 (en) * 2011-06-10 2015-07-15 株式会社デンソー Rotating electric machine
JP5879121B2 (en) * 2011-12-27 2016-03-08 株式会社日立産機システム Axial gap rotating electric machine
CN203230598U (en) * 2013-02-04 2013-10-09 东莞市泛硕电子科技有限公司 Minisize heat dissipation fan
WO2014132359A1 (en) * 2013-02-27 2014-09-04 三菱電機株式会社 Rotating electrical machine
CN204669107U (en) * 2015-02-06 2015-09-23 西门子公司 For skeleton and the motor of the stator of motor

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