KR102563692B1 - Integrated Type Stator Using Multiple PCBs, Single-phase Motor and In-car Sensor Using the Same - Google Patents

Abstract

The present invention relates to a multilayer stator using a multi-layer printed circuit board (PCB) capable of maximally generating torque on opposing rotors, and to a single-phase motor and an incar sensor using the same.
The stacked stator of the present invention includes a multi-layer substrate; and a plurality of coil patterns spirally patterned to form a plurality of reference turns on each substrate of the multilayer substrate and connected to each other through through holes, wherein the plurality of coil patterns are spaced apart in a radial direction. and a plurality of non-torque generating parts interconnecting an inner end or an outer end of the adjacent torque generating part with a plurality of torque generating parts, wherein a plurality of reference turns are integrated into each of the plurality of non-torque generating parts to form at least one integrated turn It is characterized by having.

Description

Multilayer Stator Using Multiple PCBs, Single-phase Motor and In-car Sensor Using the Same

The present invention relates to a multilayer stator using a multi-layer printed circuit board (PCB) capable of maximally generating torque on opposing rotors, and to a single-phase motor and an incar sensor using the same.

In general, an air conditioner for heating or cooling the interior of a vehicle is built-in.

The air conditioner of a vehicle is being converted into an automatic device to improve driver's convenience, and for this purpose, an in-car sensor for automatically measuring the temperature inside the vehicle is necessarily included in the air conditioner.

The in-car sensor is installed on the back of the grill or instrument panel of the car, sucks in the air inside the car by an aspirator method or blower method, and discharges the air to the outside or inside the car. A temperature sensor installed in the airflow detects the temperature of the air inside the car.

Here, the aspirator-type in-car sensor uses an aspiration motor in which an impeller is integrally formed with a rotor to suck air inside the vehicle in order to measure the vehicle's interior temperature.

BLDC motors are synchronous motors with fast dynamic response, low rotor inertia, and easy speed control.

The aspiration motor has a simple structure, and a brushless direct current (BLDC) motor with good controllability is used for air conditioning with the air conditioner. A BLDC motor is used.

On the other hand, the size of the aspiration motor is reduced, and a single-phase motor having a single coil is used in consideration of cost burden. In a single-phase motor, a single stator coil is wound in a quadrangular or triangular coreless/bobbinless type and mounted on a printed circuit board (PCB).

In such a single-phase motor, the torque (ie, rotational moment) that rotates the rotor is expressed as a vector product of a force vector generated in a current-carrying wire placed in a magnetic field and a distance vector between the center of rotation and the point of application of the force.

Therefore, in the conventional triangular stator coil, when the rotor rotates, the torque for rotating the rotor is small because the total area of the portion where the linear portion of the coil (winding) and the magnet face each other except for the vertex portion of the stator coil (winding) is small. There is a problem that occurs when is small.

In addition, these single-phase motors are used by attaching a single stator coil in a coreless/bobbinless type of quadrangular or triangular shape and attaching it on a PCB (printed circuit board) with adhesive, making it difficult to manufacture at low cost and may cause assembly defects. and has a thick film structure.

In Korea Patent Registration No. 10-1491051 (Patent Document 1), a bobbin is formed integrally with a bearing holder to improve the process of attaching a coil wound in a conventional coreless/bobbinless type on a PCB (printed circuit board). and a structure in which a coil is wound on a bobbin is proposed. However, the structure of Patent Document 1 is a thick film structure, has a low coil winding productivity, and has a problem of having to employ a separate control PCB to provide a motor driving circuit.

In general, the stator coils of the motor may be connected in parallel or in series, and when the stator coils are connected in parallel, the resistance value of the coil decreases, resulting in an increase in current value and power consumption. As a result, in the case of a motor requiring high driving RPM and driving torque, the coils are connected in parallel.

Conversely, when the stator coils are connected in series, the resistance value of the coils increases and the current value and power consumption decrease. As a result, the driving RPM and driving torque of the motor are reduced, and a motor suitable for low RPM with low power consumption is configured. Therefore, the connection method of the stator coil can be selected according to the purpose of the motor used.

On the other hand, in order to connect the stator coils in parallel in the prior art, it is difficult to configure the stator coils in parallel in a single-phase motor due to the difficulty of winding two wires at the same time by tying the start and end portions of the two coils.

However, a single-phase motor requiring high driving RPM and driving torque is required to be designed in a manner with high productivity and efficiency while connecting stator coils in parallel.

: Korea Patent Registration No. 10-1491051

Therefore, the present invention has been made to solve the above problems, and its purpose is to generate torque by being arranged in a radial direction when a slim stator is implemented using a multilayer printed circuit board (PCB) on which coil patterns are formed. It is an object of the present invention to provide a multi-layered stator capable of maximizing torque generation, including a torque generating unit that interconnects a torque generating unit and a non-torque generating unit that interconnects the torque generating unit, and a single-phase motor and an incar sensor using the same.

Another object of the present invention is to generate torque by maintaining a preset number of reference turns in the torque generating unit, and patterning the non-torque generating unit to have a wide width by integrating (ie, short-circuiting) a plurality of reference turns. It is an object of the present invention to provide a multilayer stator capable of reducing coil temperature and increasing efficiency by reducing resistance and coil loss by minimizing coil resistance, a single-phase motor and an incar sensor using the same.

Another object of the present invention is a stacked stator in which the torque generating unit increases the torque by maximizing the density of turns constituting the coil, and the non-torque generating unit integrates (ie, shorts) individual turns to minimize resistance, and a single-phase using the same It is in providing motors and in-car sensors.

Another object of the present invention is to provide a slim single-phase motor capable of improving productivity and reducing costs by implementing a stator coil for rotating and driving a rotor in a stacked type using a conductive pattern coil formed on a multi-layer PCB.

According to a first aspect of the present invention, the present invention provides a multilayer substrate; and a plurality of coil patterns spirally patterned to form a plurality of reference turns on each substrate of the multilayer substrate and connected to each other through through holes, wherein the plurality of coil patterns are spaced apart in a radial direction. and a plurality of non-torque generating units interconnecting inner and outer ends of the adjacent torque generating units, wherein a plurality of reference turns are integrated into each of the plurality of non-torque generating units to form at least one integrated A stacked stator having turns is provided.

The integrated turn may have a wider width than the reference turn, and two or three reference turns may be integrated.

Also, each of the plurality of non-torque generating units may have one integrated turn.

The coil pattern may have a zigzag pattern in which protrusions and concave portions are repeated on an outer circumference of a through hole formed in a central portion of the multilayer substrate.

Moreover, the multi-layer substrate may include first to third substrates on which first to third coil patterns are respectively formed; and a fourth substrate on which a motor driving circuit for applying a driving current to the first to third coil patterns is mounted. In this case, the plurality of coil patterns formed on each substrate of the multilayer substrate may have the same shape.

The number of torque generators may be set to one of the same number as the number of magnetic poles of the rotor, a multiple of 1/2 of the number of magnetic poles of the rotor, and a multiple of twice the number of magnetic poles of the rotor.

The multi-layer stator according to the present invention is disposed on the multi-layer board, and when the rotor is in an initial state, it is disposed at a position offset from the boundary surface of the rotor magnetic pole to detect the magnetic pole of the rotor; and a dead point prevention yoke for setting the position of the rotor so that the hall sensor is positioned at a position offset from the magnetic interface of the rotor when the rotor is in an initial state, wherein the dead point prevention yoke is the lower part of the stator. It is stacked on, and the outer periphery may be made of (number of magnetic poles)/N (where N is a divisor of the number of magnetic poles) polygonal shapes.

In this case, the hall sensor may be installed at a position offset from the boundary of the magnetic pole or the center of the magnetic pole by 1/4 of the magnetic pole width.

In addition, the Hall sensor may be positioned at a position offset from the magnetic pole boundary surface of the rotor positioned by the dead point prevention yoke when the rotor is in an initial state and overlapped with one of the torque generating units.

A plurality of torque generators of the plurality of coil patterns are connected so that current flows in the same direction, and rotational force in a tangential direction may be generated in the rotor according to the current flow.

According to a second feature of the present invention, the present invention provides a rotating shaft; a rotor in which the rotating shaft is supported in the center and a plurality of N-pole magnets and S-pole magnets are alternately disposed; and a stacked stator disposed to face the rotor and having a through hole formed in the center thereof.

According to a third aspect of the present invention, the present invention provides a rotating shaft; a rotor in which the rotating shaft is supported at a central portion and a plurality of N-pole magnets and S-pole magnets are alternately disposed; an impeller fixed to one end of the rotor and rotating together with the rotor; a bearing rotatably supporting the rotating shaft; a bearing holder for receiving and fixing the bearing; a stacked stator in which a through hole through which the bearing holder passes is formed in the center; a lower housing supporting the stacked stator therein; an upper housing disposed facing the lower case and having a plurality of through-holes through which interior air of the vehicle is introduced from a front end when the impeller is rotated and through which air introduced into a portion opposite to the impeller is discharged; and a temperature sensor disposed in an air flow path through which the air of the upper housing is introduced to measure the temperature of the air being sucked in.

As described above, in the present invention, a slim single-phase motor capable of improving productivity and reducing cost can be implemented by implementing a stator coil for rotating and driving the rotor in a stacked type using a conductive pattern coil formed on a multi-layer PCB. A slim single-phase motor for Incar sensors can be provided.

In addition, in the present invention, when a slim stator is implemented using a multi-layer printed circuit board (PCB) on which coil patterns are formed, a torque generating unit disposed in a radial direction to generate torque and a non-torque generating unit interconnecting the torque generating unit are included. Thus, maximum torque generation can be obtained.

In the present invention, the torque generating unit maintains a preset number of reference turns to generate torque, and the non-torque generating unit integrates (ie, short-circuits) a plurality of reference turns and patterns them to have a wide width, thereby increasing coil resistance By minimizing the resistance and copper loss (coil loss, copper loss) can be reduced to lower the coil temperature and increase the efficiency.

In the present invention, the torque generating unit increases the torque by maximizing the density of turns constituting the coil, and the non-torque generating unit integrates (ie, shorts) individual turns to minimize resistance of each turn.

In addition, in the present invention, since the coil pattern of each layer includes a torque generating portion oriented in a radial direction capable of maximizing torque generating efficiency, maximum torque generation can be obtained, so that motor efficiency can be increased. That is, when the rotor rotates, it is possible to increase the torque by designing a coil pattern that increases the total area of the portion where the torque generating portion of the stator coil (winding) and the magnet face each other.

Furthermore, in the present invention, by forming the coil pattern of each layer to have a zigzag pattern in which a plurality of non-torque generating parts and torque generating parts are alternately connected, maximum torque generation can be obtained in the opposing rotor. That is, since the torque generating portion is oriented in a radial direction, a tangential force is generated when the stator coil is energized, so that effective torque is obtained.

In this case, if the hall sensor is positioned at a position offset from the magnetic pole interface of the rotor positioned by the dead-point prevention yoke when the rotor is in its initial state and at the same time placed at a position overlapped with one of the torque generating units, Since the magnetic flux is maximum, the Hall element can generate the most sensitive rotor position detection signal, and in the stator, one of the torque generators is overlapped at the rotor position generating the maximum magnetic flux, so that the largest magnetic field corresponds to the maximum magnetic flux and By interacting with each other, you have the optimal conditions needed to start the rotor.

Furthermore, in the present invention, by setting the through-holes of each layer PCB at the same position, it is possible to connect coil patterns of a multi-layer structure in series or parallel connection without using a plurality of wiring pattern PCBs and stack them in a slim shape.

1 is an explanatory diagram explaining vector synthesis of forces generated between a stator coil and a magnet in a conventional single-phase motor using a triangular stator coil.
2 is a plan view showing a multilayer stator for a single-phase motor according to a first embodiment of the present invention.
3 is a development view showing coil patterns for each layer of the stacked stator according to the first embodiment of the present invention.
4 is a partially enlarged view of FIG. 2 .
5 is an explanatory diagram for explaining the arrangement relationship between a dead point prevention yoke for self-starting and a hall element in a single-phase motor according to the present invention.
6 is a development view showing a coil pattern for each layer of a multilayer stator for a single-phase motor according to a second embodiment of the present invention.
7 is a perspective view showing a slim single-phase motor implemented using a multilayer stator according to the present invention.
8 is an axial cross-sectional view illustrating a slim incar sensor according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Before describing the present invention, a single-phase motor using a single stator coil having a conventional triangular shape will be described with reference to FIG. 1 .

As shown in FIG. 1, a single-phase motor applied to a conventional aspiration motor or the like has a triangular coreless/bobbinless type stator coil 1 installed on a support bracket 5, and the stator coil 1 ), and a rotor in which N-pole and S-pole magnets 3 are alternately disposed facing each other at intervals is rotatably supported by a rotational shaft 9. Here, reference numeral 7 denotes a boss for supporting a sleeve, and 8 denotes a sleeve bearing.

When the torque (Torque: τ) (ie, rotational moment) for rotating the rotor in such a single-phase motor is obtained, it can be expressed as a vector product as shown in Equation 1 below.

[Equation 1]

τ = r×F

Here, F is the force (F = Bil) expressed by Fleming's left-hand rule, and is the force vector generated in the wire (here, the winding) through which the current (i) is placed in the magnetic field (B), and r is the center of rotation is the distance vector between (O) and the point of application of the force. Since the distance vector (r) and force vector (F) always lie in the same rotating plane, the direction of torque (τ) is always axial.

In FIG. 1, the stator coil 1 is composed of a triangular stator coil having three straight parts 1a and three vertices 1b connecting the three straight parts.

A portion 1c (shaded region) of the straight portion 1a of the stator coil 1 facing the magnet 3 corresponds to a region forming a magnetic field necessary for torque generation. When a current flows in the stator coil 1 in a clockwise direction and opposes the south pole magnet 3, a force F is generated in a direction perpendicular to the straight portion 1a of the stator coil 1. In this case, since the internal angle formed by the force F and the distance vector r forms the θ angle, the torque τ for rotating the rotor is obtained as Frsinθ (scalar value).

Here, in order for the torque (τ) to be maximized, when the angle (θ) formed between the force (F) and the distance vector (r) is 90°, that is, when the straight portion (1a) of the stator coil (1) is facing the center. It can be seen that since the force F is generated in the direction perpendicular to the straight portion 1a, that is, in the tangential direction, the rotational force for rotating the rotor (magnet) of the largest value is obtained.

Conversely, at the vertex 1b of the stator coil 1, since the direction of the force F generated when the current flows in the stator coil 1 is radial, the distance between the force F and the distance vector r The angle θ becomes 0°, and the rotational torque τ for rotating the rotor (magnet) becomes “0”.

Therefore, the torque τ generated in the conventional stator coil 1 rotates with the straight portion 1a of the stator coil 1 (winding) excluding the vertex 1b portion of the stator coil 1 (winding). It is generated in proportion to the portion 1c where the magnet 3 faces, and is obtained by finding the sum of the areas of the stator coils that meet the magnet 3 while rotating the magnet 3.

Therefore, in the conventional triangular stator coil 1, the total area of the straight portion 1a of the coil 1 (winding) and the portion 1c where the magnet 3 opposes is small when the rotor rotates. Torque for rotating is small, and consequently, the triangular stator coil 1 does not have a coil pattern shape for effectively generating torque.

In the present invention, a multilayer stator capable of reducing the phase resistance and coil loss by minimizing the resistance of the stator coil and at the same time minimizing the resistance of the stator coil to lower the coil temperature and increase the efficiency, and a single-phase motor using the same As a proposal, it will be described in detail with reference to the accompanying drawings below.

The aspiration motor applied to the incar sensor according to the present invention also uses a single-phase motor having a single coil, and uses a multilayer stator using a multi-layer board to increase motor efficiency by maximizing torque generation efficiency while being slim.

Referring to FIGS. 2 to 5 , the stacked stator 110 according to the first embodiment of the present invention includes a multi-layer board 10a made of an insulating material in which a plurality of layers are stacked and integrated; a plurality of coil patterns (21 to 25) made of spiral-shaped conductive patterns obtained by patterning the copper foil laminated on each of the multi-layer substrates to form a plurality of turns necessary for constituting the stator coil; and a plurality of through-holes T1 to T7 plated in through-holes formed through the multilayer substrate 10a to connect the plurality of coil patterns 21 to 25 and the like.

The plurality of coil patterns 21 to 25 are patterned to have a spiral shape, and are arranged in a zigzag pattern on a circular substrate so as to have a plurality, for example, three protrusions and concave portions alternately at 120 degree intervals. has a shape

As a result, the plurality of coil patterns 21 to 25 include a plurality of inner and outer non-torque generators 20a to 20f disposed along the circumferential direction at intervals on the inner and outer circumferences; and a plurality of torque generating parts 20g to 20l connected to the adjacent outer non-torque generating parts 20a to 20c and the inner non-torque generating parts 20d to 20f and arranged radially from the center.

The stacked stator 110 may be constructed using a multi-layer board 10a made of a copper clad laminate (CCL) in which copper foil is laminated on each board 10, and after patterning and laminating the copper foil of each board, It may be configured by forming holes T1 to T7.

In the following description, an example of forming a coil pattern by patterning a copper-clad laminate for a multi-layer substrate is described, but it is also possible to form a coil pattern by printing it on a general substrate using silver-paste or copper-paste without using a copper-clad laminate. And, this case should also be considered as belonging to the scope of the present invention.

The substrate 10 may be made of an insulating resin such as FR-4 or CEM-3 in which the substrate material is made of, for example, glass epoxy laminate. The multi-layer board 10a has a structure in which copper foil is laminated on the board 10 of each layer, and any insulating resin can be used as a board material if a multi-layer PCB can be constructed, and the number of layers of the board to be laminated is dependent on the single-phase motor. It can be set within the range of 1 to 10 layers in proportion to the desired RPM implemented by Since a large number of coil turns is required to obtain a high torque value in order to obtain a high RPM, it is necessary to increase the number of laminated PCBs to use a plurality of coil patterns 21 to 25.

In the case of using the multi-layer board 10a on which multi-layer PCBs are stacked, printed wiring 17 for interconnecting coil patterns and electronic components is formed on the back surface of the lowermost PCB, and various electronic components 16 are printed wiring ( 17) to form the motor driving circuit 30, and the driving power source Vcc is connected to the power terminal of the printed wiring 17 and the ground pattern GND.

When the multilayer stator 110 for a single-phase motor according to the present invention does not require high RPM, it may be constructed using a double-sided board in which copper foil is laminated on both sides of the board 10, in which case the board 10 A structure in which the coil pattern 21 is formed on one surface and the motor driving circuit 30 is mounted on the rear surface may be configured.

In the following description of the embodiment, as shown in FIG. 3 , a multi-layer substrate 10a in which first to fourth PCBs 11 to 14 having a 4-layer structure are stacked will be described as an example.

The first to third PCBs 11 to 13 are annularly arranged on a circular substrate so as to have three protrusions and grooves alternately at intervals of 120 degrees on the upper surface of the substrate 10, respectively, and the first to third PCBs 11 to 13 are spirally coiled. Third coil patterns 21 to 23 are formed, respectively, and, for example, fan-shaped fourth and fifth coil patterns 24 and 25 are vertically separated and formed on the fourth layer PCB 14 of the lowermost layer. For example, it is formed by finely patterning a conductive metal such as copper foil (Cu).

Each of the PCBs 11 to 14 can be selected and used among various thicknesses such as 0.4mm and 0.8mm, and in the coil patterns 21 to 25 applied in this embodiment, the torque generating unit 20g -20l) is, for example, patterned with a pattern width of 0.12 mm and an interval between adjacent patterns of 0.13 mm. The width of the coil pattern and the interval between the patterns may be increased or decreased as needed.

The first to third coil patterns 21 to 23 are identically formed to have a spiral shape in a clockwise direction (CW) from the inside to the outside, and the fourth coil pattern 24 is formed in a counterclockwise direction from the inside to the outside ( CCW) is formed to have a spiral shape, and the fifth coil pattern 25 is formed to have a spiral shape in a clockwise direction (CW) from the outside to the inside.

Of course, the first to third coil patterns 21 to 23 each have a spiral shape, and are directed from the inside to the outside or from the outside to the inside according to the connection method of the coil patterns using through holes, clockwise (CW) or counterclockwise (CW). It may be configured by combining patterns directed in a clockwise direction (CCW), and may have a zigzag shape by having two or more protrusions and grooves arranged along the periphery of the through hole 15 in a large view.

The first to third coil patterns 21 to 23 include three outer and inner non-torque generating parts 20a to 20c and 20d to 20f, respectively, and the outer non-torque generating parts 20a to 20c and the inner non-torque generating parts 20a to 20c. Six torque generating units 20g to 20l connecting the torque generating units 20d to 20f are alternately connected to form a zigzag shape as a whole.

In addition, the outer and inner non-torque generating parts 20a to 20c and 20d to 20f are arranged along the circumferential direction at intervals on the outer circumference and the inner circumference, respectively, and the six torque generating parts 20g to 20l are respectively as a whole. The inner ends have a pattern shape in which the distance between them is narrowed by two so as to be set in a direction radiating from the center of the substrate 10 .

In the first embodiment, the first to third coil patterns 21 to 23 are composed of spiral coils of 24 turns (401 to 424), respectively, as shown in FIG. 4 . In this case, the torque generating units 20g to 20l of the first to third coil patterns 21 to 23 maintain 24 preset reference turns 401 to 424 to generate torque, and the non-torque generating units ( 20a to 20c and 20d to 20f) form 12 integrated turns 431 to 442 having a wide width by integrating (ie, shorting) 24 reference turns 401 to 424, for example, two by one.

The number of reference turns 401 to 424 integrated in the non-torque generating units 20a to 20c and 20d to 20f is 2 to 3, or, as in the second embodiment, the total number of reference turns 401 to 424 Integration is also possible.

In general, resistance (R) is proportional to the length (l) and inversely proportional to the cross-sectional area (S). Therefore, when the width of the integrated turns 431 to 442 is twice that of the reference turns 401 to 424, that is, when they have a resistance value of 1/2, 24 of the non-torque generating units 20a to 20c and 20d to 20f When designing 12 integrated turns 431 to 442 by integrating two reference turns 401 to 424, the total resistance of the stator coil composed of the first to third coil patterns 21 to 23 is integrated. Compared to before losing, it will decrease to about 1/4.

Copper loss (coil loss) is a phenomenon that occurs when current (I) flows through a conductor with resistance RΩ, and energy of (P = I ² R) is generated as heat, and energy loss causes a rise in temperature.

In the present invention, the coil temperature is lowered by reducing energy loss by greatly reducing resistance and copper loss, and as a result, the motor efficiency can be increased.

In the present invention, when the first to third PCBs 11 to 13 are stacked, the six torque generating units 20g to 20l in the first to third coil patterns 21 to 23 are disposed at the same position. have Therefore, as will be described later, when three layers of PCBs are stacked, the torque generating units (20g to 20l) have a position where the three-layered coil patterns are simultaneously opposite to the magnets of the rotor, and the current flow direction is the same. According to the setting, the resultant torque can be generated.

In the stator 110 according to the present invention, a stator coil is formed by interconnecting first to fifth coil patterns 21 to 25 formed on a multi-layer board 10a, and torque generators 20g to 20l are formed in the stator coil. The number has a value of one of the same number as the number of magnetic poles of the rotor, a multiple of 1/2 of the number of magnetic poles of the rotor, and a multiple of 2 of the number of magnetic poles of the rotor, and at the same time, the angle between adjacent torque generating units 20g to 20l is 360/n ( Here, n is determined as one of the same number as the number of magnetic poles of the rotor, a 1/2 multiple of the number of magnetic poles of the rotor, and a multiple of 2 of the number of magnetic poles of the rotor).

Therefore, in the case of a stator having six torque generating parts (20g to 20l), the angle between the adjacent torque generating parts (20g to 20l) is 60°, and the magnetic pole of the rotor (N pole magnets and S pole magnets) are configured to have six poles.

On the fourth PCB 14, printed wires 17 required to mount and connect various electronic components 16 are formed in a conductive pattern so as to integrally form the driving circuit 30 required to drive a single-phase motor.

In addition, the fourth and fifth coil patterns 24 and 25 added to the first to third coil patterns 21 to 23 may be formed on the fourth PCB 14 by utilizing the remaining space after mounting the driving circuit components. The fourth and fifth coil patterns 24 and 25 may be omitted according to a torque value required to rotate the rotor.

The illustrated fourth PCB 14 is shown in a perspective state, and various patterns, that is, the fourth and fifth coil patterns 24 and 25, the printed wiring 17 and the electronic component 16 mounted thereon are a multi-layer board. It shows what is located on the back of (10a).

The fourth coil pattern 24 is a fan-shaped pattern to have a spiral shape in a clockwise direction (CW) from the outside to the inside, and the fifth coil pattern 25 is formed in a counterclockwise direction (CCW) from the inside to the outside. It is a pattern formed in a fan shape to have a spiral shape.

When the first to fourth PCBs 11 to 14 of the present invention are stacked, the first to fifth coil patterns 21 to 25 form the first to seventh through holes T1 to T7 in the case of the first embodiment. For the non-torque generating units 20a to 20c and 20d to 20f that are interconnected in series through integrating (ie, shorting) 24 reference turns 401 to 424 by 2, 12 integrated turns 431 to 442 is patterned to form one stator coil. Insides of the first to seventh through holes T1 to T7 are plated or filled with a conductive material.

In the stator for a single-phase motor according to the present invention, the first to third layer PCBs 11 to 13 in which the first to third coil patterns 21 to 23 are formed on the upper surface of the substrate 10, respectively, are coil pattern layers. , and the fourth layer PCB 14 forms a driving circuit layer in which the motor driving circuit 30 is mounted.

In the present invention, seven through holes T1 to T7 are formed at the same positions of the first to fourth PCBs 11 to 14, and soldering lands 18 are formed around the through holes T1 to T7. It is formed in a conductive pattern. As shown in FIG. 3 , the start portions S1 to S5 and the end portions E1 to E4 of the first to fifth coil patterns 21 to 25 are wider than those forming coils (windings), for example. For example, it is formed in the form of a tear drop, and through holes T1 to T7 and soldering lands 18 surrounding the through holes T1 to T7 are disposed.

As a result, in the present invention, the start portion (S1 to S5) and the end portion (E1 to E4) are designed to be wider than the portion forming the coil (winding) by adjusting the thickness of each layer coil pattern (21 to 25) in the stacked stator Thus, the reliability of the connection can be increased.

That is, the start and end portions of the coil pattern are formed in the form of a tear drop, and by arranging through-holes and soldering lands surrounding the through-holes, coil patterns can be interconnected or connected to wiring patterns. It is easy and the reliability of the connection can be guaranteed.

In addition, in order to increase reliability, a plurality of at least one through hole (T1 to T7) connecting the start part and the end part of each layer is formed to prevent reliability degradation due to disconnection or defective through hole.

In the third PCB 13, a through hole T3 and a through hole T4 are provided to connect the fourth coil pattern 24 and the fifth coil pattern 25 formed separately on the upper and lower sides of the fourth PCB 14. ) is formed along the inner circumference of the third coil pattern 23, and connecting the start portion S5 from the outside to the inside of the fifth coil pattern 25. For this purpose, a second jumper line pattern J2 connecting the through hole T5 and the through hole T6 is formed, and a second jumper line pattern J2 connecting the through hole T4 and the through hole T5 is formed on the fourth PCB 14. A three-jumper line pattern J3 is formed along the outer edge of the fifth coil pattern 25 .

When the first to fourth PCBs 11 to 14 of the present invention are stacked, the first to fifth coil patterns 21 to 25 include through holes T1 to T7 and first to third jumper wire patterns J1 to 25. J3) are interconnected to form one stator coil.

That is, the end portion E1 of the first coil pattern 21 of the first PCB 11 is connected to the start portion S2 of the second coil pattern 22 of the second PCB 12 through the through hole T2. , and the end portion E2 of the second coil pattern 22 is connected to the start portion S3 of the third coil pattern 23 of the third PCB 13 through the through hole T7.

In addition, the end portion E3 of the third coil pattern 23 is connected to the start portion S3 of the fourth coil pattern 24 of the fourth PCB 14 through the through hole T1, and the fourth coil The end portion E4 of the pattern 24 and the start portion S5 of the fifth coil pattern 25 include a first jumper line pattern J1 connecting the through holes T3 and T4, They are interconnected through a third jumper line pattern J3 connecting through holes T4 and T5 and a second jumper line pattern J2 connecting through holes T5 and T6. this is done

As a result, one end of the stator coil, that is, the end portion of the fifth coil pattern 25 is connected to the first output terminal Out1 of the motor driving circuit 30, and the other end of the stator coil, that is, the first coil pattern 21 ) is connected to the second output terminal Out2 of the motor driving circuit through the through hole T7.

In the present invention, the first to fifth coil patterns exist such that a region where the coil patterns do not overlap each other exists on the inner and outer circumferences of the outer non-torque generating parts 20a to 20c of the first to third coil patterns 21 to 23. By setting the width of (21 to 25), through holes (T1 to T7) are arranged.

As a result, in the present invention, start or end terminals disposed inside the first to fifth coil patterns 21 to 25 can be easily connected to coil patterns of other layers without using a separate wiring pattern PCB.

Although the first embodiment shown in FIG. 3 illustrates that the motor driving circuit 30 for driving a single-phase motor is mounted on the fourth PCB 14, the motor driving circuit may be configured separately. That is, when a sufficient space is not secured between the stator and the support on which the stator is mounted, only a minimum of driving circuit components may be mounted on the rear surface of the fourth PCB 14 .

A single-phase motor using a multilayer stator according to a first embodiment of the present invention will be described with reference to FIG. 5 below. In FIG. 5 , the current flow (refer to the arrow) for each rotational position of the rotor is the first coil pattern 21 of the first PCB 11 and the second to fifth coil patterns of the second to fourth PCBs 12-14 ( 22 to 25) are the same, so only the first coil pattern 21 of the first layer PCB 11 will be described.

The illustrated single-phase motor 40 is a single-phase motor, and has a structure in which the stator 110 and the rotor 120 of a 6-slot-6-pole structure are disposed to face each other in an axial type, but in the drawings, for convenience of description, they are together on the same plane. it is expressed

When the motor driving circuit 30 for a single-phase motor detects the magnetic pole of a magnet from the Hall sensor H1 and generates a pair of first rotor position detection signals having opposite polarities, first and second switching transistors accordingly. One of them is turned on and the other is turned off to determine the flow direction of the current flowing through the stator coil connected between the first and second switching transistors.

As shown in FIG. 5 , in the illustrated embodiment, the Hall sensor H1 is installed at a position offset by 15° from the interface 121g between the N-pole magnet 121e and the S-pole magnet 121f.

When the rotor 120 is at the initial position (ie, 0°), when the driving power Vcc is supplied to the motor driving circuit 30, the Hall sensor H1 operates the south pole magnet 121f of the rotor 120. When recognizing and generating a pair of first rotor position detection signals containing the rotational direction of the rotor (ie, counterclockwise (CCW)) and applying them to the two first and second switching transistors of the motor driving circuit 30, As the first switching transistor is turned on and the second switching transistor is turned off, the current flow direction of the driving current for the stator coil, that is, the first to fifth coil patterns 21 to 25 is determined.

As the rotation direction of the rotor is determined to be counterclockwise (CCW), current flows from the start portion (S1) of the first coil pattern 21 to the end portion of the fifth coil pattern 25, and the direction in which the current flows is indicated by an arrow in the first coil pattern 21 . The second to fifth coil patterns 22 to 25 also flow in the same direction as the first coil pattern 21 .

In this case, since the outer and inner non-torque generating parts 20a to 20c and 20d to 20f of the first to fifth coil patterns 21 to 25 are arranged in a substantially concentric circle shape, the force generated according to Fleming's left hand rule ( Since the direction of F) is toward the radial direction, it does not affect the rotational torque of the rotor.

The first to fifth coil patterns 21 to 25 have through holes T1 to T7 and jumper wire patterns J1 to J3 so that the flow direction of the driving current flowing to the torque generating parts 20g to 20l at the same location is the same. ) through which they are interconnected. As a result, the torque generating parts 20g to 20l are oriented in a radial direction (ie, a normal direction) perpendicular to the rotational direction (circumferential direction) of the rotor 120, so that they rotate counterclockwise (CCW) according to Fleming's left hand rule. As a result, a tangential force (F) is generated.

Therefore, the outer and inner non-torque generating parts 20a to 20c and 20d to 20f of the first to fifth coil patterns 21 to 25 only serve as a path through which current flows, and six torque generating parts 20g to 20l ), a force F is generated in the tangential direction, so that the rotor 120 rotates.

In addition, since the direction of the current flowing in the coil between the adjacent torque generating units 20g to 20l is set oppositely, and the magnetic poles of the magnets of the rotor 120 corresponding to this are also positioned oppositely, all of the rotor magnets are pushed in the same direction. or a pulling force is generated to rotate the rotor in a counterclockwise direction (CCW).

As described above, in the single-phase motor using the multilayer stator according to the first embodiment of the present invention, the torque generating units (20g to 20l) are wired so that the current flows in the same direction, and the tangential direction to the rotor according to the current flow of rotational force can be generated.

Subsequently, when the rotor 120 is rotated by 45° (electrical angle 135°) at the mechanical angle, the Hall sensor H1 is positioned at the interface 121g between the N-pole magnet 121a and the S-pole magnet 121f. As a result, they cannot recognize stimuli and cannot determine the direction of current flow.

When the rotor 120 continues to rotate due to rotational inertia and exceeds 45° (135° electrical angle) in mechanical angle and rotates 60° (180° electrical angle) in mechanical angle, the Hall sensor H1 is a N-pole magnet ( 121a). In this case, the Hall sensor H1 generates a pair of second rotor position detection signals having opposite polarities to the first rotor position detection signal and applies the output to the first and second switching transistors, so that the first switching transistor As the second switching transistor is turned off and turned on, the current flow direction of the driving current for the stator coil, that is, the first to fifth coil patterns 21 to 25 is reversed.

As a result, when the current flow direction of the driving current for the first to fifth coil patterns 21 to 25 is set in reverse, the torque generating units 20g to 20l rotate counterclockwise (CCW) according to Fleming's left-hand rule. A tangential force F is generated to rotate the rotor 120 .

As described above, the motor driving circuit 30 detects the magnetic pole of the rotor every time the hall sensor H1 rotates 60 degrees in mechanical angle (180 degrees in electrical angle), and receives the first rotor position detection signal and the second rotor position detection signal. is generated alternately, the first and second switching transistors are alternately turned on and off to change the current flow direction of the driving current for the first to fifth coil patterns 21 to 25 .

As described above, the multilayer stator 110 according to the first embodiment of the present invention uses the conductive pattern coils 21 to 25 formed on the multilayer PCB as the stator coil, and is a slim stator capable of improving productivity and reducing costs by implementing a multilayer stator coil. can be implemented.

In addition, the multilayer stator according to the present invention includes torque generating parts 20g to 20l oriented in a radial direction so that the coil patterns of each layer can maximize torque generating efficiency, and the stator coil when the rotor 120 rotates. It is designed to maximize the total area of the part where the torque generating parts 20g to 20l and the magnets 121a to 121f of the (winding) oppose each other.

In this case, the rotor 120 forms magnets in a ring shape as shown in FIG. 8, and the width of the ring is at least larger than the length of the torque generating parts 20g to 20l to form a torque generating part 20g to 20l. When arranged to face each other, it is possible to maximize the total area of the portion where the torque generating parts 20g to 20l and the magnets 121a to 121f oppose each other, so that maximum torque can be generated.

On the other hand, in the single-phase motor using the stacked stator according to the present invention, one hall sensor (H1) is disposed on the PCB forming the stator to detect the rotor position, and a dead point made of iron plate or silicon steel as a self-starting method. ) anti-yoke can be employed. By using the dead point prevention yoke, the initial position of the rotor can be set to stop at a preset position, and if the hall sensor is installed at a position where the dead point can be prevented considering the initial position of the rotor, the self-starting failure phenomenon can be avoided. there is.

5 is an explanatory diagram for explaining the arrangement relationship between a dead point prevention yoke for self-starting and a hall element in a single-phase motor according to the present invention.

As in the Incar sensor shown in FIG. 8, in the case of adopting a single hall sensor and employing a dead point prevention yoke disposed on the lower side of the stator in the present invention, as shown in FIG. 5, the dead point prevention yoke 170 The outer circumferential surface forms a hexagon shape equal to the number of magnetic poles (6 poles) of the rotor 120, and the inner circumferential surface of the through hole is composed of a flat plate having a circular shape.

It is preferable to use a soft magnetic material having a low coercive force such as silicon steel or pure iron so that the dead point prevention yoke 170 can serve as a yoke.

In this case, when the rotor 120 is in an initial (stopped) state, between the magnet 121 of the rotor 120 and the dead point prevention yoke 170, the center of each magnet is dead point as shown in FIG. 5 due to a magnetic phenomenon. The effective area width of the prevention yoke 170 is positioned opposite to the widest point (ie, corner).

Accordingly, it is preferable to install the Hall element H1 at a position shifted by 1/4 magnetic pole width (15° in the case of a 6-pole rotor) or 3/4 magnetic pole width from the boundary surface 121g of the magnetic pole. The reason why the Hall element (H1) is installed at a position deviated by 1/4 the width of the magnetic pole from the boundary surface (121g) of the magnetic pole is that the magnetic flux generated from the magnet is maximum at this point, so the Hall element (H1) is the rotor with the best sensitivity. This is because a position detection signal can be generated.

In addition, in the present invention, the Hall element H1 is disposed at a point where the magnetic pole width is 1/4 from the boundary surface 121g of the magnetic pole among the first to third coil patterns 21 to 23 of the stator, and at the same time, the torque generating unit ( 20g ~ 20l) is set to be located.

As shown in FIG. 5, one of the torque generating units 20g to 20l, for example, the point where the torque generating unit 20l coincides with the Hall element H1 and is 1/4 the magnetic pole width from the boundary surface 121g of the magnetic poles. When the rotor is started by applying driving power to the motor driving circuit 30, the most sensitive rotor position detection signal can be obtained from the Hall element H1 and generated from the magnet 121f. Since the torque generating part 20l is opposed to the point where the magnetic flux becomes the maximum, self-starting is more easily achieved.

In addition, when the rotation direction of the rotor is counterclockwise (CCW), it is preferable that the hall element H1 is installed at the 1/4 magnetic pole width point in the counterclockwise direction from the hexagonal edge of the dead point prevention yoke 170, , If the rotation direction is clockwise (CW), the self-startup failure phenomenon can be avoided by installing the Hall element (H1) at the 1/4 magnetic pole width point in the clockwise direction from the hexagonal edge of the dead point prevention yoke 170. there will be

A multilayer stator according to a second embodiment of the present invention will be described with reference to FIG. 6 below.

First, in the stacked stator 110 according to the first embodiment shown in FIGS. 2 and 3, the first to third coil patterns 21 to 23 are each formed to have a spiral shape in a clockwise direction (CW), The torque generators 20g to 20l maintain 24 reference turns 401 to 424, and the 24 reference turns 401 to 424 of the non-torque generators 20a to 20c and 20d to 20f are integrated by two. It is designed with 12 integrated turns (431 to 442).

In the multilayer stator according to the second embodiment, the first to third coil patterns 21 to 23, the torque generating units 20g to 20l maintain 24 reference turns 401 to 424, and the non-torque generating units ( 20a to 20c and 20d to 20f) have the same structure as the first embodiment except that all of the 24 reference turns 401 to 424 are integrated into one.

As in the second embodiment, all 24 reference turns 401 to 424 of the non-torque generating units 20a to 20c and 20d to 20f are 4 to 6 times wider than the reference turns 401 to 424. When integrated into one turn (450; 451) having, the total resistance of the stator coil composed of the first to third coil patterns (21 to 23) is greatly reduced to 1/4 or less compared to before integration. do.

As a result, the multilayer stator according to the second embodiment reduces the coil temperature by reducing energy loss by greatly reducing resistance and copper loss compared to the first embodiment, and as a result, the motor efficiency can be increased.

In the multilayer stator according to the second embodiment shown in FIG. 6, all of the first to fourth coil patterns 21 to 24 are formed to have a spiral shape in a clockwise direction (CW), and only the fourth coil pattern 24 Only five torque generating units 20g to 20k are formed, and one torque generating unit 20l is omitted and a motor driving circuit 30 is disposed in its place.

In the second embodiment, the coil patterns 21 to 23 of the first to third PCBs 11 to 13 are identical in shape and formed to have a clockwise (CW) spiral shape. Same as Example 1.

In the stacked stator according to the second embodiment, after the coil patterns 21 to 24 of the first to fourth PCBs 11 to 14 are formed into windings having a clockwise (CW) spiral shape, four through holes ( Interconnection is made through T11 ~ T14).

In addition, in the multilayer stator according to the second embodiment of the present invention, the first to fourth coil patterns 21 to 24 are arranged in the same position in the same shape, and the first to fourth coil patterns 21 to 24 are formed using through holes T11 to T14. When the 4 coil patterns 21 to 24 are connected, one stator coil is formed.

That is, the first coil pattern 21 of the first PCB 11 is wound in a clockwise direction at the start portion S11 (ie, through hole T11), and then ends at the end portion E11 through through hole T12. is connected to the start portion S12 of the second coil pattern 22 of the second PCB 12 through the through hole T13, and the end portion E12 of the second coil pattern 22 is connected to the third PCB through the through hole T13. It is connected to the start part S13 of the third coil pattern 23 of (13).

In addition, the end portion E13 of the third coil pattern 23 is connected to the start portion S14 of the fourth coil pattern 24 of the fourth PCB 14 through the through hole T14, and the fourth coil An end portion of the pattern 24 is connected to an extension wire.

As a result, one end of the stator coil, that is, the end portion of the fourth coil pattern 24 is connected to the first output terminal Out1 of the motor driving circuit 30 through an extension wire, and the other end of the stator coil, that is, the first The start portion S11 of the coil pattern 21 is connected to the second output terminal Out2 of the motor driving circuit 30 through the through hole T11.

In the stacked stator according to the second embodiment of the present invention, all of the motor driving circuits 30 mounted on the fourth PCB 14 are disposed on the left side.

When the driving power supply (Vcc) is supplied to the motor driving circuit 30 of the fourth PCB 14, the stacked stator according to the second embodiment rotates the opposite rotor as in the first embodiment.

That is, in the stacked stator according to the second embodiment, six torque generating units are disposed at the same position in the first to fourth coil patterns 21 to 24 of the first to fourth PCBs 11 to 14, and the stacked coils The pattern has a position facing the magnet of the rotor at the same time, and when the driving power supply (Vcc) is supplied, the direction of current flow is set in the same direction between the coil patterns stacked at the same position, so that the resultant torque can be generated. .

On the other hand, if a sensing coil pattern is formed on the first PCB 11 facing the rotor, when a magnet approaches the sensing coil pattern during rotation of the rotor, an induced electromotive force is generated by electromagnetic induction from the sensing coil pattern, and the motor driving circuit The furnace 30 can change the direction of the current flowing in the stator coil by turning on the switching element using this induced electromotive force.

In the present invention, it is also possible to integrally form the coil pattern for the stator coil by patterning the copper foil of the PCB substrate through a batch process and simultaneously form the sensing coil pattern without causing an increase in manufacturing cost.

In this case, the direction of the current flowing in the stator coil in the motor driving circuit 30 can be periodically switched without using an expensive rotor position detection sensor such as a Hall sensor.

Hereinafter, a slim single-phase motor and a slim incar sensor implemented using a stacked stator will be described with reference to FIGS. 7 and 8 .

7 shows a slim single-phase motor implemented using a multilayer stator according to the present invention, and FIG. 8 shows a slim in-car sensor according to an embodiment of the present invention.

As shown in FIGS. 7 and 8 , the slim type in-car sensor 100 according to an embodiment of the present invention includes a stacked stator 110 according to the present invention inside a tubular housing 200. A single-phase motor 40 implemented using is accommodated.

The housing 200 has an upper housing 210 having a cylindrical shape having a suction port 211 through which air is sucked in on one side, and an upper end portion snap-coupled to the lower portion of the upper housing 210 to form a space therein while maintaining the lower portion. It includes a lower housing 220 for sealing.

In addition, the single-phase motor 40 includes a stacked stator 110, a rotor 120, a rotating shaft 140, a sleeve bearing 180, and a bearing holder 300.

A step 222 supporting the lower portion of the stacked stator 110 protrudes from the inside of the lower housing 220, and a terminal guide 221 for accommodating the terminal assembly 160 is provided at the lower portion of the lower housing 220. has been extended

The terminal assembly 160 applies driving power (Vcc) or the like from a climate control module (CCM) inside the vehicle to the motor driving circuit 30 integrally formed in the stacked stator 110, and a frequency generator (FG). ) It includes a plurality of terminal pins 162 for receiving signals and a terminal support 161 for integrating the plurality of terminal pins 162.

A plurality of terminal pins 162 are integrated by the terminal support 161, the lower end extends into the terminal guide 221 while being fixed to the lower housing 220, and the upper end integrally with the stacked stator 110. It is electrically connected to the formed motor driving circuit 30 and physically fixed while penetrating the multilayer board 10a. An external connector connected to the air conditioning controller (CCM) is inserted into the terminal guide 221 and connected to the terminal pin 162.

On the top of the stacked stator 110, the rotor 120 is disposed facing each other in an axial gap type with a predetermined gap, and a plurality of magnets 121 with N and S poles alternately arranged on the bottom surface are arranged in an annular shape An annular back yoke 122 is disposed above the magnet 121 to form a magnetic circuit path, and the plurality of magnets 121 and the back yoke 122 are annularly integrated by the rotor support 123.

A plurality of blades protrude from the upper surface of the rotor support 123 so that the impeller 130 is integrally formed, and the upper end of the rotating shaft 140 is inserted into the center and integrally formed.

Forming the rotor 120 and the impeller 130 integrally is performed by arranging the back yoke 122 and the magnet 121 in an annular shape in a mold, arranging the rotating shaft 140 vertically in the center, and performing insert injection molding. When the rotor support 123 is molded, the back yoke 122, the magnet 121, and the rotating shaft 140 are integrally formed with the rotor support 123, and the impeller circumferentially on the upper surface of the rotor support 123 ( 130) is integrally formed.

A groove 124 is formed on the bottom surface of the central portion of the rotor support body 123 in an upward direction, and the groove 124 has a through hole of the stacked stator 110 from the base plate 310 of the bearing holder 300 ( 15), a cylindrical boss 330 protrudes from the bottom to the top and has a groove 331 from the top to the bottom to accommodate the sleeve bearing 180 in the central portion.

The sleeve bearing 180 is inserted into the groove 331 of the cylindrical boss 330 and is press-fitted, and the rotational shaft 140 is rotatably coupled to the through hole of the sleeve bearing 180.

In addition, an anti-scattering oil cap 340 is coupled to an upper portion of the cylindrical boss 330 to prevent leaking of the oil filled in the groove 331 according to the rotation of the rotating shaft 140 .

The base plate 310 of the bearing holder 300 is disposed in a vertical direction with the cylindrical boss 330, and a thrust plate for supporting the rotary shaft 140 of the rotor 120 is provided at the center of the base plate 310. plate (or bearing seat) 320 is disposed, and a dead point prevention yoke 170 (see FIG. 8) is disposed outside the thrust plate 320.

When the base plate 310 and the boss 330 of the bearing holder 300 are injection molded, the thrust plate 320 and the dead point prevention yoke 170 may be embedded and integrated by an insert molding method.

A plurality of through holes are formed in the lower part 217 of the upper housing 210 to discharge the air introduced through the inlet 211 in the lateral direction, and the impeller 130 integrally formed with the rotor 120 are placed

In the upper housing 210, a bridge 212 for installing the temperature sensor 150 is formed in the middle of the upper part 216 and the lower part 217, and a suction port 211 is formed in the center of the bridge 212. A temperature sensor guide 213 for guiding and supporting the temperature sensor 150 protrudes from the front end of the .

The temperature sensor 150 has one end of the lead wire 151 connected to the circuit part formed in the stacked stator 110, and is drawn out to the upper part 216 of the upper housing 210 through the through hole 214 formed on one side wall. After that, it extends along the bridge 212 and the temperature sensor support 213 to the inlet 211 so that the temperature sensor 150 is positioned in the inlet 211.

Accordingly, when the impeller 130 rotates together with the rotor 120, the temperature sensor 150 inhales air inside the vehicle through the inlet 211 of the upper housing 210, the temperature sensor 150 more accurately measures the temperature of the introduced air. The measured temperature value is transmitted to the air conditioning control unit (CCM) through the terminal pin 160 so that it can be used to adjust the indoor temperature of the vehicle.

The upper part 216 of the upper housing 210 has a smaller diameter than the lower part 217, and the incar sensor 100 is installed at the boundary between the upper part 216 and the lower part 217, for example, A buffer pad 218 is disposed to block the noise generated by the operation of the single-phase motor 40 from entering the room through the grill or instrument panel when installed on the back of the vehicle's grill or instrument panel. .

In the slim incar sensor 100 according to an embodiment of the present invention, when current flows through the conductive pattern coils 21 to 25 by the motor driving circuit 30, the impeller 130 rotates along with the rotor 120, and the upper housing Air inside the vehicle is sucked through the inlet 211 of the 210.

Accordingly, the temperature sensor 150 accurately measures the temperature of the introduced air, and the measured temperature value is transmitted to the air conditioning controller (CCM) through the terminal pin 160.

As the single-phase motor 40 uses the stacked stator 110, the In-Car Sensor 100 according to an embodiment of the present invention can realize a slim structure compared to a conventional single-phase motor.

In addition, the stacked stator 110 can produce a plurality of them at once through a batch process, so the productivity is high, so the price competitiveness is high, and the motor driving circuit can be embedded, so that a separate control PCB can be reduced. there is.

In addition, the stacked stator 110 according to the present invention includes torque generating parts 20g to 20l oriented in a radial direction so that the coil patterns of each layer can maximize torque generating efficiency, so that torque generation is maximized. can lose As a result, the intake amount of air sucked from the inside of the vehicle by the aspiration motor is increased, so that more accurate temperature sensing can be achieved.

Moreover, in the In-Car Sensor 100, the torque generators 20g to 20l generate torque by maintaining a preset number of reference turns, and the non-torque generators 20a to 20c and 20d to 20f By integrating (ie, shorting) a plurality of reference turns and patterning them to have a wide width, resistance and coil loss are reduced by minimizing coil resistance, thereby lowering coil temperature and increasing motor efficiency.

In the above description of the embodiment, serial connection of multi-layered coil patterns has been described as an example, but it is also possible to connect in parallel connection.

In addition, in the description of the above embodiment, the laminated stator has been described as an example of configuring a single-phase motor used in an incar sensor, but it may be used in various fan motors using small-sized single-phase motors.

In the above, the present invention has been shown and described as specific preferred embodiments, but the present invention is not limited to the above embodiments and is common knowledge in the art to which the present invention belongs within the scope of not departing from the spirit of the present invention. Various changes and modifications will be possible by those who have

The present invention can be applied to a multi-layer stator that can be implemented in a slim type by using a multi-layer board having a coil pattern capable of maximally generating torque on opposing rotors, a single-phase motor using the same, various fan motors, and incar sensors.

10: substrate 11-14: PCB
15: through hole 16: electronic component
17: printed wiring 18: soldering land
20a-20f: non-torque generating part 20g-20l: torque generating part
21-25; Coil pattern 30: drive circuit
40: single-phase motor 100: Incar sensor
110: stator 120: rotor
121-121f: Magnet 121g: Interface
122: back yoke 123: rotor support
130: impeller 140: rotational shaft
150: temperature sensor 160: terminal assembly
170: anti-dead point yoke 180: sleeve bearing
200: housing 210: upper housing
211: inlet 212: bridge
213: temperature sensor support 218: buffer pad
220: lower housing 221: terminal guide
222: stepped portion 300: bearing holder
310: base plate 320: thrust plate
330: boss 10a: multi-layer board
T1-T7,T11-T14: Through hole H1: Hall element

Claims (13)

multi-layer substrate; and
A plurality of coil patterns spirally patterned to form a plurality of reference turns on each substrate of the multilayer substrate and interconnected through through holes;
The plurality of coil patterns include a plurality of torque generating parts disposed at intervals along a radial direction and a plurality of non-torque generating parts respectively interconnecting inner and outer ends of the adjacent torque generating parts,
The multilayer stator having at least one integrated turn by integrating a plurality of reference turns in each of the plurality of non-torque generating units. According to claim 1,
The integrated stator has a wider width than the reference turn. According to claim 1,
The integrated stator is a stacked stator in which 2 to 3 reference turns are integrated. According to claim 1,
The plurality of non-torque generating units each have a single integrated turn. According to claim 1,
The coil pattern has a zigzag pattern in which protrusions and concave portions are repeated on the outer circumference of the through hole formed in the central portion of the multilayer board. According to claim 1,
The multilayer board,
first to third substrates on which first to third coil patterns are respectively formed; and
and a fourth substrate on which a motor driving circuit for applying a driving current to the first to third coil patterns is mounted. According to claim 6,
A plurality of coil patterns formed on each board of the multi-layer board have the same shape. According to claim 1,
The multilayer stator wherein the number of torque generating units is set to one of the same number as the number of rotor magnetic poles, a 1/2 multiple of the number of rotor magnetic poles, and a double multiple of the number of rotor magnetic poles. According to claim 1,
a hall sensor disposed on the multi-layered substrate and disposed at a position offset from the boundary surface of the rotor magnetic poles when the rotor is in an initial state to detect the magnetic poles of the rotor; and
A dead point prevention yoke for setting the position of the rotor such that the Hall sensor is positioned at a position offset from the magnetic interface of the rotor when the rotor is in an initial state; further comprising,
The dead point prevention yoke is stacked on the lower part of the stator, and the outer periphery is made of (number of magnetic poles) / N (where N is a divisor of the number of magnetic poles) polygonal shape. According to claim 9,
The hall sensor is positioned at a position offset from the magnetic pole interface of the rotor positioned by the dead point prevention yoke when the rotor is in an initial state and disposed at a position overlapping with one of the torque generating units. According to claim 9,
The hall sensor is installed at a position offset by 1/4 magnetic pole width from the boundary of the magnetic pole or the center of the magnetic pole. axis of rotation;
a rotor in which the rotating shaft is supported in the center and a plurality of N-pole magnets and S-pole magnets are alternately disposed; and
A stacked stator disposed facing the rotor and having a through hole formed in the center thereof;
The multilayer stator is a single-phase motor of the multilayer stator according to any one of claims 1 to 11. axis of rotation;
a rotor in which the rotating shaft is supported at a central portion and a plurality of N-pole magnets and S-pole magnets are alternately disposed;
an impeller fixed to one end of the rotor and rotating together with the rotor;
a bearing rotatably supporting the rotating shaft;
a bearing holder for receiving and fixing the bearing;
a stacked stator in which a through hole through which the bearing holder passes is formed in the center;
a lower housing supporting the stacked stator therein;
an upper housing disposed opposite to the lower housing and having a plurality of through-holes through which interior air of the vehicle is introduced from the front end when the impeller is rotated and through which air introduced into a portion opposite to the impeller is discharged; and
A temperature sensor disposed in an air flow path through which the air of the upper housing is introduced to measure the temperature of the intake air; includes,
The stacked stator is an in-car sensor according to any one of claims 1 to 11.

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