KR101817601B1 - Integrated Type Stator Using Multiple PCBs, Aspiration Motor and In-car Sensor Using the Same - Google Patents

Abstract

The present invention relates to a stacking stator using a multilayered printed circuit board and an aspiration motor and an in-car sensor using the same, capable of obtaining maximum torque for a counterpart rotor. The stacking stator includes: a multilayered board; a plurality of coil patterns patterned in a spiral form and connected through a through hole to form a plurality of turns on each board of the multilayered board; a Hall sensor placed on the multilayered board, and placed in a position displaced from a border surface of a magnetic pole of a rotor to detect the magnetic pole of the rotor when the rotor is in an initial state; and a dead point prevention yoke setting a position of the rotor to make the Hall sensor set in the position displaced from the border surface when the rotor is in an initial state. The spiral coil patterns include: a plurality of radial pattern parts placed in a radial direction; and a plurality of internal and external connection pattern parts connecting the radial pattern parts.

Description

[0001] The present invention relates to a stacked stator using a multilayer printed circuit board, an aspiration motor using the same, and an aspiration motor using the same.

The present invention relates to a laminated stator using a multilayer printed circuit board (PCB) capable of maximally achieving torque generation in opposite rotors, an aspiration motor using the same, and an incense sensor.

Generally, the automobile has an air conditioner for indoor heating or cooling.

In order to improve the convenience of the driver, the automobile air conditioner is being converted into an automation device, and an in-car sensor for automatically measuring the automobile room temperature is essentially included in the air conditioner.

An in-car sensor is installed on the back surface of an automobile grill or an instrument panel. The in-car sensor sucks indoor air through an aspirator system or a ventilation system, The temperature sensor installed in the air flow detects the temperature of the room air.

Here, the earth sensor type incase sensor uses an aspiration motor in which an impeller is integrally formed on a rotor to inhale the automobile room air to measure the room temperature of the automobile.

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

A brushless direct current (BLDC) motor having a simple structure and good controllability for air conditioning with an air conditioner is used as the aspiration motor, and its structure is a disk type of an axial gap structure having an air gap in the axial direction BLDC motor is adopted.

On the other hand, a single-phase motor having a single coil is used in consideration of the cost reduction and the size reduction of the aspiration motor. As disclosed in Korean Registered Utility Model No. 20-0296035 (Patent Document 1), in a single-phase motor, a single stator coil is wound in a quadrangular or triangular coreless / bobbinless type and mounted on a PCB (printed circuit board) Has been used.

The torque (i.e., rotational moment) that rotates the rotor in the single-phase motor of Patent Document 1 is expressed as a product of a force vector generated in a conductor in which a current in a magnetic field flows and a distance product of a distance vector do.

Therefore, in the conventional triangular-shaped stator coil, since the total area of the linear portion of the coil (winding) excluding the vertex portion of the stator coil (winding) and the portion where the magnet faces is small when the rotor rotates, Is small.

Since the single-phase motor of Patent Document 1 is wound in a quadrangular or triangular coreless / bobbinless type and attached with a glue on a PCB (printed circuit board), it is difficult to manufacture the single-phase motor at low cost, And has a thick film structure.

In addition, in Korean Patent Registration No. 10-1491051 (Patent Document 2), in order to improve the process of attaching a coil wound on a coreless / bobbinless type, proposed in Patent Document 1, on a PCB (printed circuit board) A bobbin is integrally formed and a coil is wound around the bobbin. However, the structure of Patent Document 2 is a thick film structure, the productivity of coil windings is low, and a separate control PCB is required to have a motor driving circuit.

Further, a conventional brushless direct current (BLDC) motor as a single-phase motor requires a Hall element for detecting the magnetic pole of the rotor and generating a switching signal of the driving current for the stator coil. The driving circuit used is used.

In the case of using one hall element, when the hall element is located at the boundary surface of the rotor magnetic pole, the magnetic pole detection of the hall element is not performed, and the current supply to the stator coil is not performed, so that a dead point exist.

In such a single Hall element system, as a self-starting mechanism, there are a method of using auxiliary magnets to move the magnetic pole of the stator out of the magnetic pole interface (i.e., neutral point) of the rotor using the magnet for fixation, a method of installing magnetic material screws in the coil- There is a method in which the shape of the stator yoke as in Patent Document 1 is specifically designed and used.

In the case of using the above-mentioned hall device, there is a factor of cost increase which requires additional parts to be installed for the self-starting simultaneously with the use of the expensive hall device. Therefore, a method of generating the rotor position detection signal while minimizing the cost increase factor without using the hall device And various sensorless motor drive methods for detecting the rotor position detection signal without using a hall element have been proposed.

: Korean Registered Utility Model No. 20-0296035 : Korean Registered Patent No. 10-1491051

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a multi-layered printed circuit board using a multilayer printed circuit board capable of realizing a slim type stator using a multilayer printed circuit board And to provide an aspiration motor and an incase sensor using the same.

It is another object of the present invention to provide a radial direction pattern portion in which the coil pattern of each layer can maximize the torque generating efficiency, so that torque generation can be maximized, Stator, an aspiration motor using the same, and an incase sensor.

Still another object of the present invention is to provide a stacked stator capable of realizing a sensorless motor drive circuit inexpensively and simply by simultaneously arranging a sensing coil pattern for detecting a rotor position on a printed circuit board facing the uppermost layer opposed to the rotor, And to provide a slim type inca sensor using the same.

According to a first aspect of the present invention, there is provided a semiconductor device comprising: a multilayer substrate; A plurality of coil patterns patterned in a helical pattern to form a plurality of turns on each substrate of the multilayer substrate and interconnected through the through holes; A Hall sensor disposed in the multilayer substrate and disposed at a position deviated from the interface of the rotor pole when the rotor is in an initial state to detect magnetic pole 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 deviated from the magnet interface of the rotor when the rotor is in an initial state, And a plurality of inner and outer connection pattern portions interconnecting the plurality of radiation pattern portions and the plurality of radiation pattern portions disposed along the plurality of radiation pattern portions.

The hall sensor may be positioned at a position deviated from the magnetic pole interface of the rotor positioned by the dead point prevention yoke when the rotor is in an initial state, and may be disposed at a position overlapped with one of the radial pattern portions.

In addition, the helical coil pattern may have a pattern in which the protrusions and the recessed portions are repeated on the outer periphery of the through hole formed in the central portion of the multilayer substrate.

Further, the multilayer substrate includes first to third substrates on which first to third coil patterns are formed, respectively; And a fourth substrate on which a motor driving circuit for applying a driving current to the first through third coil patterns is mounted.

The plurality of radial pattern portions of the plurality of coil patterns are connected in such a manner that a current flows in the same direction, and a torsional rotational force can be generated in the rotor in accordance with the current flow.

The plurality of coil patterns formed on the respective substrates of the multilayer substrate are formed in the same shape or the same shape at the same positions, and the coil patterns arranged in the even layers are formed in the coil patterns arranged in the odd- And can be disposed at a position rotated by 360 degrees (the number of radial pattern portions).

The number of the radiation pattern portions may be set to be the same as the number of the rotor magnetic poles, one-half of the rotor magnetic poles and two times the rotor magnetic poles.

The start portion and the end portion of the coil pattern are formed wider than the portion forming the coil, and at least one through hole and a soldering land surrounding the through hole may be disposed.

The dead point prevention yoke is stacked on the lower portion of the stator and has a polygonal shape having an outer periphery (number of magnetic poles) / N (where N is the number of magnetic poles), the inner periphery is circular, Or at a position deviated from the center of the boundary surface or the magnetic pole by a 1/4 magnetic pole width.

According to a second aspect of the present invention, A rotor rotatably supported on the rotating shaft and having a plurality of N pole magnets and S pole magnets alternately arranged; A bearing rotatably supporting the rotary shaft; A bearing holder for receiving and fixing the bearing; And a stacked stator disposed opposite to the rotor and having a through hole through which the bearing holder passes, the stator being provided at the center thereof.

The aspiration motor according to the present invention may further include a sensing coil pattern formed on one of the plurality of recessed portions of the coil pattern to detect the rotor rotation position.

In this case, the motor driving circuit generates a rotor position signal corresponding to the rotor magnetic pole when the sensing coil formed by the sensing coil pattern generates an induced electromotive force corresponding to the magnetic pole of the opposing rotor, And a switching circuit for switching the direction of the driving current applied to the stator coil in response to the rotor position signal generated corresponding to the magnetic pole of the rotor facing the rotor position signal generator.

The sensing coil pattern may be positioned at a position shifted from the pole interface of the rotor positioned by the dead point prevention yoke by a 1/4 pole width or 1/4 pole width from the center of the pole when the rotor is in an initial state.

The bearing holder may be disposed at a lower portion of the stator, and may include a base plate having the dead point prevention yoke therein. And a boss protruding upward from the base plate through a through hole of the stacked stator and receiving and supporting the bearing at a central portion thereof.

According to a third aspect of the present invention, A rotor having the rotating shaft supported at its center and having a plurality of N pole magnets and S pole magnets alternately arranged; An impeller fixed to one end of the rotor and rotating together with the rotor; A bearing rotatably supporting the rotary 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 at the center; A lower housing for supporting the stacked stator therein; An upper housing disposed opposite to the lower housing and having a plurality of through holes through which indoor air of a vehicle flows from a front end portion of the impeller when the impeller is rotated and air flows in a portion opposed to the impeller; And a temperature sensor disposed in an air flow path through which the air of the upper housing flows to measure a temperature of the air sucked.

In this case, the base plate may be integrally formed with the lower housing.

Further, the rotor is formed in a ring shape, and the width of the ring is formed to be larger than at least the length of the radial pattern portion, and can be arranged to face the radial pattern portion.

Further, a sensing coil pattern formed on one of the plurality of recessed portions of the coil pattern to detect the rotor rotational position is provided on the uppermost surface of the multilayered substrate, and a motor driving circuit for applying a driving current to the coil pattern is formed as a multi- And can be provided on the lowermost surface of the substrate.

A plurality of radial pattern portions of the coil pattern disposed on each layer of the multilayer substrate may be arranged at the same position and set to flow current in the same direction.

The plurality of coil patterns may be connected in series connection or parallel connection.

As described above, in the present invention, the stator coil for rotating the rotor is implemented as a stacked type using the conductive pattern coil formed on the multilayer PCB, thereby realizing a slim type single-phase motor capable of improving productivity and reducing cost, It is possible to provide a slim type aspiration motor for an incase sensor.

Further, in the present invention, the coil pattern of each layer includes a radiation pattern portion oriented in the radial direction that maximizes the torque generating efficiency, so that torque generation can be maximized and the motor efficiency can be increased. That is, when the rotor rotates, it is possible to design a coil pattern for increasing the total area of the radial pattern portion of the stator coil (winding) and the portion where the magnet faces, thereby increasing the torque.

Further, in the present invention, the coil pattern of each layer is formed so as to have a star-shaped pattern in which a plurality of connection pattern portions and radiating pattern portions are alternately connected, thereby maximally achieving torque generation in the opposed rotor. That is, the radiation pattern portion is oriented in the radial direction, so that a tangential force is generated when the stator coil is energized, so that an effective torque is obtained.

In this case, when the Hall sensor is positioned at a position deviating from the magnetic pole interface of the rotor positioned by the dead point preventing yoke when the rotor is in the initial state and at the same time, placed at a position overlapped with one of the radial pattern portions, And the stator has one of the radial pattern portions superimposed on the rotor position that generates the maximum magnetic flux, so that the largest magnetic field is the largest magnetic field, They have the optimum conditions for interacting with the flux and starting the rotor.

Further, in the present invention, since the axial type structure is adopted by using the thin film type stator, the space for removing the core type stator used in the radial type motor and the coil terminal connection portion can be omitted, The diameter of the sleeve bearing supporting the rotary shaft of the rotor can be expanded to include sufficient oil by utilizing the obtained space, thereby improving reliability and durability.

Further, in the present invention, by setting the through holes of the respective layer PCBs to the same position, the multilayer coil patterns can be connected in series or parallel connection without using a plurality of wiring patterns PCB, so that they can be laminated in a slim form.

Furthermore, in the present invention, by arranging the sensing coil pattern in the empty space in which the pattern coil is not formed in the uppermost layer PCB opposed to the rotor without using the rotor position detecting element, the sensorless motor driving circuit Can be implemented.

1 is an explanatory view for explaining the vector synthesis of a force generated between a stator coil and a magnet in a conventional aspiration motor using a stator coil of a triangular shape.
2 is a plan view showing a laminated stator for an aspiration motor according to a first embodiment of the present invention.
3 is a developed view showing coil patterns for each layer of the stacked stator according to the first embodiment of the present invention.
4A and 4B are plan views showing soldering patterns of the first and fourth PCBs, respectively.
Fig. 5 is an explanatory view for explaining the operation of the aspiration motor using the stacked stator according to the present invention, and is an explanatory diagram showing the direction of the current when the rotor is at the initial position. Fig.
6A to 6D are explanatory diagrams showing directions of currents according to the rotational positions of the rotors, respectively.
7 is a development view showing coil patterns for respective layers of a multilayer stator for an asynchronous motor according to a second embodiment of the present invention.
8 is an explanatory view for explaining the arrangement relationship between the dead point prevention yoke for self-starting and the Hall element in the aspiring motor according to the present invention.
9 is a pattern diagram of a first PCB in which a sensing coil pattern necessary for implementing a sensorless motor driving circuit according to the present invention is arranged together with a coil pattern.
10 is a circuit diagram of a sensorless motor drive circuit for driving a sensorless single-phase motor according to the present invention.
11 is a perspective view showing a slim type aspiration motor implemented by using the stacked stator according to the present invention.
12 and 13 are axial sectional views showing a slim type incase sensor according to the first and second embodiments of the present invention, respectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience.

Prior to describing the present invention, a conventional single-phase motor using a single stator coil of a triangular shape (see Patent Document 1) will be described with reference to Fig.

As shown in Fig. 1, a three-phase coreless / bobbinless type stator coil 1 is mounted on a support bracket 5, and a stator coil 1 And the N-pole and the S-pole magnets 3 are alternately arranged, is rotatably supported by the rotary shaft 9. The rotor 3 is rotatably supported by the rotary shaft 9, Reference numeral 7 denotes a sleeve supporting boss, and 8 denotes a sleeve bearing.

When a torque (τ) (that is, a rotation moment) for rotating the rotor in the single-phase motor is obtained, it can be expressed as a product of squares as shown in the following equation (1).

[Equation 1]

τ = r × F

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

In Fig. 1, the stator coil 1 is constituted by a stator coil of a triangular shape having three rectilinear portions 1a and three vertexes 1b connecting the three rectilinear portions.

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

Here, when the angle? Formed between the force F and the distance vector r is 90 degrees in order to maximize the torque tau, that is, when the straight portion 1a of the stator coil 1 is directed to the center The force F is generated in the direction perpendicular to the straight line 1a, that is, in the tangential direction, so that a rotational force for rotating the rotor (magnet) having the largest value can be obtained.

On the contrary, in the vertex 1b of the stator coil 1, since the direction of the force F generated when current flows through the stator coil 1 is the radial direction, the force F generated between the force F and the distance vector r The angle? Becomes 0 占 and the rotation torque? That rotates the rotor (magnet) becomes "0 ".

Therefore, the torque tau generated in the conventional stator coil 1 is rotated by the rectilinear portion 1a of the stator coil 1 (winding) excluding the portion of the vertex 1b of the stator coil 1 (winding) Is obtained by calculating the sum of the areas of the stator coil which are generated in proportion to the opposing portion 1c of the magnet 3 and meet the magnet 3 while rotating the magnet 3. [

Therefore, in the conventional triangular-shaped stator coil 1, since the total area of the portion 1c where the straight portion 1a of the coil 1 (the coil) and the magnet 3 face each other when the rotor rotates is small, The stator coil 1 having a triangular shape does not have a coil pattern for effectively generating torque.

The present invention has been proposed in order to solve the problems of the related art, and will be described in detail with reference to the accompanying drawings.

A single-phase motor having a single coil is used as the aspiration motor to be applied to the incase sensor according to the present invention, and a stacked stator using a multilayer printed circuit board is adopted so as to maximize the torque generation efficiency while increasing the efficiency of the motor while being slim .

2 to 5, a multilayer stator for an asynchronous motor according to a first embodiment of the present invention includes a plurality of substrates 10 formed by stacking a plurality of layers and made of an insulating material; A plurality of coil patterns (21 to 25) each formed of a helical conductive pattern obtained by patterning a copper foil laminated on each of the layer substrates so as to form a plurality of turns necessary for constructing a stator coil; And a plurality of through holes T1 to T7 for plating the through holes formed through the plurality of substrates 10 to connect the plurality of coil patterns 21 to 25 and the like.

The plurality of coil patterns (21 to 25) include a plurality of inner and outer connection pattern portions (20a to 20f) arranged along the circumferential direction with an interval between the inner circumference and the outer circumference, respectively; And a plurality of radial pattern units 20g-20l that interconnect the adjacent inner connection pattern unit and the outer connection pattern unit and are disposed along the radial direction from the center.

The stacked stator 110 may be constituted by using a multi-layer substrate 10a made of a copper clad laminate (CCL) in which a copper foil is laminated on a substrate 10 of each layer. After the copper foil of each layer substrate is patterned and laminated, And may be formed by forming a conductive through hole.

In the following description, a multilayer board is used to pattern a copper-clad laminate to form a coil pattern. However, it is also possible to form a coil pattern by printing a coil pattern on a general substrate using silver-paste or copper-paste without using a copper-clad laminate And this case should also be regarded as falling within the scope of the present invention.

The substrate 10 may be made of an insulating resin such as FR-4 or CEM-3, which is made of a glass epoxy laminate, for example. The multilayer substrate 10a has a structure in which a copper foil is laminated on the substrate 10 of each layer and any insulating resin can be used as the material of the substrate if the multilayer PCB can be constructed. Lt; RTI ID = 0.0 > 10 < / RTI > In order to obtain a high RPM, it is required to increase the number of PCBs stacked so as to use the plurality of coil patterns 21 to 25 since a large number of coil turns is required so as to obtain a high torque value.

When a multilayer board 10a in which a multilayer PCB is stacked is used, a printed wiring 17 for interconnecting a coil pattern and an electronic component is formed on the bottom surface of the lowermost PCB, and various electronic components 16 are connected to the printed wiring 17 to form the motor drive circuit 30 and the driving power supply Vcc is connected to the power supply terminal of the printed wiring 17 and the ground pattern GND.

The multilayer stator 110 for an aspiration motor according to the present invention may be constructed using a double-sided substrate on which a copper foil is laminated on both sides of the substrate 10 when a high RPM is not required. In this case, And the motor driving circuit 30 is mounted on the back surface of the coil pattern 21. In this case,

In the following description of the embodiment, as shown in FIG. 3, the multi-layer substrate 10a is formed by stacking first to fourth PCBs 11 to 14 having a four-layer structure.

First to third coil patterns 21 to 23 having a star shape are formed on the upper surface of the substrate 10 respectively on the first to third PCBs 11 to 13, For example, fan-shaped fourth and fifth coil patterns 24 and 25 are separately formed on the layer PCB 14, and for example, a conductive metal such as a copper foil is finely patterned Respectively. Each of the PCBs 11 to 14 may be selected from among those having various thicknesses of, for example, 0.4 mm and 0.8 mm, and the coil patterns 21 to 25 applied to the present embodiment may be, for example, The width is 0.12 mm, and the interval between adjacent patterns is 0.13 mm. The width of the coil pattern and the distance between the patterns can be increased or decreased as needed.

The first and third coil patterns 21 and 23 and the fourth coil pattern 24 are formed to have a helical shape in a clockwise direction CW from the inside to the outside, And the second coil pattern 22 and the fifth coil pattern 25 are formed so as to have a helical shape in a counterclockwise direction CCW from the inside to the outside, And has a zigzag shape so as to have three protrusions and recesses to form a star shape.

Of course, each of the first to third coil patterns 21 to 23 has a helical shape and is directed from the inside to the outside or from the outside to the inside depending on the connection method of the coil pattern using the through holes, A clockwise direction CCW pattern, or a zigzag shape so as to have two or more protrusions and recesses in a large scale.

Each of the first to third coil patterns 21 to 23 includes three outer and inner connection pattern portions 20a to 20c and 20d to 20f and three outer coil pattern portions 20a to 20c, Six radiation pattern portions 20g to 20l connecting the radiation patterns 20d to 20f are alternately connected to form a star shape as a whole.

The outer and inner connection pattern portions 20a to 20c and 20d to 20f are arranged along the circumferential direction with an interval between the outer circumference and the inner circumference respectively and the six radiation direction pattern portions 20g to 20l are formed as a whole on the substrate 10 so as to be set in a direction to be radiated from the center of the inner side end portion.

The first and third coil patterns 21 and 23 of the first and third PCBs 11 and 13 have the same shape and the second coil pattern 22 of the second PCB 12 has the same shape as the first and third coil patterns 21 and 23. [ 3 coil patterns 21 and 23, but is deviated by a phase difference of 60 degrees.

As a result, when the first to third PCBs 11 to 13 are laminated, the six radiation pattern parts 20g to 20l in the first to third coil patterns 21 to 23 are arranged at the same position I have. Therefore, as will be described later, when three layers of PCBs are stacked, the radiating pattern units 20g to 20l each have a position where the coil patterns stacked in three layers face each other at the same time as the magnets of the rotor, The same torque can be generated.

The stator 110 according to the present invention connects the first to fifth coil patterns 21 to 25 formed on the multilayer PCB to form a stator coil. The number of the radial pattern portions 20g to 20l in the stator coil is A value equal to the number of the rotor magnetic poles, a half of the number of the rotor magnetic poles and a half of the number of the rotor magnetic poles, and the angle between adjacent radial pattern portions 20g to 20l is 360 / n , n is a number equal to the number of rotor poles, one half of the number of rotor poles and two times the number of rotor poles).

Therefore, in the case of a stator having six radial pattern portions 20g to 20l, the angle between adjacent radial pattern portions 20g to 20l is 60 占 and the magnetic pole of the rotor, (The N pole magnet and the S pole magnet) have six poles.

The printed wiring 17 necessary for mounting and wiring various electronic components 16 to form the drive circuit 30 necessary for driving the single-phase motor is formed in the fourth PCB 14 in a conductive pattern.

The fourth and sixth coil patterns 24 and 25, which are added to the first to third coil patterns 21 to 23, are formed on the fourth PCB 14 by utilizing a space remaining after mounting the driving circuit component And the fourth and fifth coil patterns 24 and 25 may be omitted depending on the torque value required to rotate the rotor.

The fourth PCB 14 shown in the figure shows a state in which the various patterns, that is, the fourth and fifth coil patterns 24 and 25, the printed wiring 17 and the electronic component 16 mounted thereon, 10). ≪ / RTI >

The fourth coil pattern 24 is a pattern formed in a sector shape so as to have a helical shape in a clockwise direction CW from the outside to the inside and the fifth coil pattern 25 is a pattern formed in a counterclockwise direction CCW It is a pattern formed in a fan shape so as to have a spiral shape.

When the first to fourth PCBs 11 to 14 of the present invention are laminated, the first to fifth coil patterns 21 to 25 are connected in serial or parallel manner through the first to seventh through holes T1 to T7 When interconnected, one stator coil is formed. The first to seventh through holes T1 to T7 are plated or filled with a conductive material inside the holes.

The stator for a single-phase motor according to the present invention includes first to third PCBs 11 to 13, in which first to third coil patterns 21 to 23 having a star shape are formed on an upper surface of a substrate 10, And the fourth layer PCB 14 forms a drive circuit layer on which the motor drive 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 as shown in FIG. 4A, and soldering lands 18 are electrically conductive Pattern. 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 the portions forming the coils (windings) A soldering land 18 surrounding the through holes T1 to T7 and the through holes T1 to T7 is disposed in a tear drop shape.

As a result, in the present invention, the starting portions S1 to S5 and the end portions E1 to E4 are designed to be wider than the portions forming the coil (winding) by adjusting the thicknesses of the coil patterns 21 to 25 in the stacked stator So that the reliability of the connection can be increased.

That is, the start portion and the end portion of the coil pattern are formed in the shape of a tear drop, and the soldering lands surrounding the through holes and the through holes are disposed to interconnect the coil patterns, It is easy and can guarantee the reliability of the connection.

In order to increase reliability, at least one or more through holes (T1 to T7) connecting the start portion and the end portion to each layer may be formed in plural to prevent the reliability from being deteriorated due to failure of the wire or through hole.

The through holes T3 and T4 are formed in the second PCB 12 in order to connect the fourth coil pattern 24 and the fifth coil pattern 25 formed above and below the fourth PCB 14, The first jumper wire pattern J1 is formed on the outer surface of the second coil pattern 22 and the third PCB 13 is formed on the outer side of the fifth coil pattern 25 on the fourth PCB 14. [ The second jumper wire pattern J2 connecting the fourth through hole T4 and the fifth through hole T5 is formed on the outer side of the third coil pattern 23 .

When the first to fourth PCBs 11 to 14 of the present invention are laminated, the first to fifth coil patterns 21 to 25 are formed in the through holes T1 to T7 and the first and second jumper wire patterns J1, J2 to form a stator coil.

That is, the first coil pattern 21 of the first PCB 11 is electrically connected to the start portion E2 of the second coil pattern 22 of the second PCB 12 via the second through hole T2 S2 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 sixth through hole T6 .

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 first through hole T1, The end portion E4 of the fourth coil pattern 24 and the start portion S5 of the fifth coil pattern 25 are connected to the first jumper line pattern J1 connecting the through hole T3 and the through hole T4, And the jumper line pattern J2 connecting the through hole T4 and the through hole T5.

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, and the other end of the stator coil, And the portion S1 is connected to the second output terminal Out2 of the motor drive circuit through the sixth through hole T6.

Between the inner peripheral portion of the outer connecting pattern portions 20a to 20c of the first and third coil patterns 21 and 23 and the outer peripheral portion of the inner connecting pattern portion of the second coil pattern 22, The coil patterns 21 and 23 are formed with six through-hole regions R1 (not shown) in which coil patterns are not overlapped with each other, between the outer peripheral portion of the inner connection pattern portions 20d to 20f of the coil patterns 21 and 23 and the inner peripheral portion of the outer connection pattern portion of the second coil pattern 22 And the first to seventh through holes T1 to T7 are set to the six through hole regions R1 to R6 and the first to seventh through hole patterns R1 to R6, And the outer space R10 of the fifth coil patterns 21 to 25 is utilized.

As a result, in the present invention, when connecting the start or end terminal disposed inside the first inner fifth coil patterns 21 to 25 to the coil pattern of the other layer, one of six through hole regions R1 to R6 The through holes T2, T3, and T5 to T7 formed by using the through holes may be used.

In the present invention, the through-holes T1 to T7 are appropriately utilized by using the through-hole regions R1 to R6 and the outer space R10 so that the coil patterns of the multilayer PCB can be connected in series or in parallel without using a separate wiring pattern PCB Can be connected in parallel connection.

Although the motor driving circuit 30 for driving the single-phase motor is mounted on the fourth PCB 14 in the first embodiment shown in FIG. 2, the motor driving circuit may be separately formed. That is, when a sufficient space can not be secured between the stator and the supporting portion on which the stator is mounted, only a minimum number of driving circuit components can be mounted on the back surface of the fourth PCB 14. [

Hereinafter, an aspiration motor using the stacked stator according to the first embodiment of the present invention will be described with reference to Figs. 5 to 6D. 5 to 6D, the current flow for each rotation position of the rotor is applied to the first coil pattern 21 of the first PCB 11 and the second to fifth coil patterns 22 of the second to fourth PCBs 12-14 Only the first coil pattern 21 of the first layer PCB 11 will be described.

The illustrated aspiration motor 40 has a structure in which a stator 110 and a rotor 120 of a 6-slot-6-pole structure are arranged in an axial direction so as to face each other as a single-phase motor. However, .

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

5 and 8, in the illustrated embodiment, the Hall sensor H1 is installed at a position deviated by 15 degrees from the interface 121fg between the N pole magnet 121e and the S pole magnet 121f. The mounting position of the hall sensor H1 will be described in detail with reference to FIG.

5, when the driving power source Vcc is supplied to the motor driving circuit 30 when the rotor 120 is at the initial position (i.e., 0 deg.), The Hall sensor H1 rotates the S- And generates a pair of first rotor position detection signals containing the rotation direction of the rotor (i.e., the counterclockwise direction CCW) by recognizing the first and second switching transistors 121f of the motor driving circuit 30, The first switching transistor is turned on and the second switching transistor is turned off so that the direction of current flow of the driving current to the stator coils, that is, the first to fifth coil patterns 21 to 25, is determined.

A current flows in the direction from the start portion S1 of the first coil pattern 21 to the end portion of the fifth coil pattern 25 as the rotation direction of the rotor is determined as the counterclockwise direction CCW, Are indicated by arrows in the first to fifth coil patterns 21 to 25.

In this case, since the outer and inner connection pattern portions 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 F ) Does not affect the torque since it is directed in the radial direction.

The first through fifth coil patterns 21 through 25 are connected to each other through the through holes T1 through T7 and the jumper wire patterns T1 and J2 so that the flow directions of the driving currents flowing through the radial pattern portions at the same positions are the same. The connection is made.

For example, the radial pattern portions 20g and 20h of the first coil pattern 21 are disposed in the radial pattern portions 22g and 22h of the second coil pattern 22, in the radial direction of the third coil pattern 23 The direction of current flow is set in the same direction as both the pattern portions 23g and 23h and the radial pattern portions 24g and 24h of the fourth coil pattern 24. [ As a result, the radial pattern portions 20g to 20l are oriented in the radial direction (i.e., normal direction) perpendicular to the rotational direction (circumferential direction) of the rotor 120, , A tangential force F is generated.

Therefore, the outer and inner connection pattern portions 20a to 20c and 20d to 20f of the first to fifth coil patterns 21 to 25 serve as a path through which only current flows, and the six radiation pattern portions 20g to 20l A force F is generated in a tangential direction to rotate the rotor 120.

The direction of the current flowing in the coil between the adjacent radial pattern portions 20g to 20l is reversed and the magnetic poles of the corresponding magnets of the rotor 120 are also reversely positioned. Pushing or pulling force is generated and the rotor is rotated counterclockwise (CCW).

As described above, in the aspiration motor using the stacked stator according to the first embodiment of the present invention, the radial pattern portions 20g to 20l are connected so that current flows in the same direction, It is possible to generate a rotational force in the tangential direction.

In this case, the outer and inner connection pattern portions 20a to 20c and 20d to 20f of the first to fifth coil patterns 21 to 25 are connected such that electric current flows in opposite directions to each layer, The direction of the force F generated in accordance with Fleming's left-hand rule is radially directed, so that it does not affect the torque.

6A shows a case where the rotor 120 is rotated by 15 DEG (electrical angle 45 DEG) by a mechanical angle, and FIG. 6B shows a case where the rotor 120 is rotated by 30 DEG (electrical angle 90 DEG) , And a case in which the mechanical angle is rotated by 45 ° (electrical angle of 135 °) is shown in FIG. 6c.

6C, the hall sensor H1 is located at the interface 121g between the N pole magnet 121a and the S pole magnet 121f, and thus the magnetic pole is not recognized. When the rotor 120 is positioned at the position shown in FIG. 6C, It does not determine the direction.

Fig. 6D shows a case where the rotor 120 continuously rotates due to rotational inertia and rotates by 60 degrees (180 degrees in electrical angle) at a machine angle. When the rotor rotates at an angle of 45 degrees (135 degrees in electrical angle), the Hall sensor H1 recognizes the N pole magnet 121a. In this case, the hall sensor H1 generates and outputs to the first and second switching transistors a pair of second rotor position detection signal outputs having the opposite polarity to the first rotor position detection signal, so that the first switching transistor And the second switching transistor is turned on so that the current flow direction of the driving current to the stator coils, that is, the first to fifth coil patterns 21 to 25 is set to be opposite as shown in Fig. 6D.

As a result, as shown in Fig. 6D, when the current flow direction of the driving current for the first to fifth coil patterns 21 to 25 is reversed, the radial pattern portions 20g to 20l follow the Fleming left- A tangential force F is generated in the counterclockwise direction CCW and the rotor 120 is rotated.

As described above, the motor driving circuit 30 detects the magnetic pole of the rotor every time the Hall sensor H1 rotates 60 degrees (180 degrees electrical angle) to the machine angle, and outputs the first rotor position detection signal and the second rotor position detection signal The first and second switching transistors are alternately turned on and off to change the current flowing direction of the driving current to the first to fifth coil patterns 21 to 25.

As described above, in the stacked stator 110 according to the first embodiment of the present invention, the stator coil is implemented as a stacked type using the conductive pattern coils 21 to 25 formed on the multi-layer PCB, thereby improving the productivity and reducing the cost. Can be implemented.

In addition, the stacked stator according to the present invention includes radially patterned radial pattern portions 20g to 20l so that the coil pattern of each layer can maximize the torque generation efficiency, and when the rotor 120 rotates, Is designed so as to maximize the total area of the portions where the radial pattern portions 20g to 20l of the coil (winding) and the magnets 121a to 121f face each other.

12 and 13, the width of the ring is formed to be at least larger than the length of the radial pattern units 20g to 20l, The total area of the portions where the radial pattern portions 20g to 20l and the magnets 121a to 121f face each other can be maximized, so that torque generation can be maximized.

Hereinafter, a stacked stator according to a second embodiment of the present invention will be described with reference to FIG.

2, the first and third coil patterns 21 and 23 and the fourth coil pattern 24 have a spiral shape in a clockwise direction (CW) And the second coil pattern 22 and the fifth coil pattern 25 are formed so as to have a helical shape in the counterclockwise direction CCW, respectively. That is, in the first embodiment, the coil pattern of the odd-numbered layer PCB is formed to have a helical shape in the clockwise direction (CW), and the coil patterns of the even-numbered layer are formed to have the helical shape in the counterclockwise direction (CCW).

7, all of the first to fourth coil patterns 21 to 24 are formed so as to have a spiral shape in the clockwise direction (CW), and only the fifth coil pattern 25, Is formed so as to have a spiral shape in the counterclockwise direction (CCW).

In the second embodiment, the coil patterns 21 to 23 of the first to third PCBs 11 to 13 are formed in the same pattern and have a helical shape in the clockwise direction (CW) 1 embodiment. However, since the fourth and fifth coil patterns 24 and 25 of the fourth PCB 14 are disposed at positions opposed to each other in a line symmetrical structure, the fourth coil pattern 24 in both the first and second embodiments And the fifth coil pattern 25 has a pattern wound in the counterclockwise direction CCW.

The stacked stator according to the second embodiment is characterized in that when the coil patterns 21 to 23 of all the layers PCB are formed of windings having a spiral shape in the clockwise direction (CW), the first and second 3 coil patterns 21 and 23 are provided with start portions S1 and S3 on the inner side and end portions E1 and E3 on the outer side and the second coil pattern 22 of the even- A start portion S2 is disposed on the outer side, and an end portion E2 is disposed on the inner side.

The stacked stator according to the second embodiment is formed by winding the coil patterns 21 to 23 of the first to third PCBs 11 to 13 in a clockwise (CW) spiral shape, The third PCB 13 is connected to the fourth coil pattern 24 through the through holes T11 through T18 and the third coil 13 is connected to the third coil 13 through the through holes T11 through T18. And fourth jumper line patterns J11 and J12 are formed on the fourth PCB 14 and a fifth jumper line pattern J13 is formed on the fourth PCB 14. [

In addition, since the first to third coil patterns 21 to 23 are disposed at the same position and at the same position in the laminated stator according to the second embodiment of the present invention, the coil patterns of the respective layers are mutually connected It is possible to secure a wider space for arranging the through holes used for making the through holes.

The remaining portions except the region where the fourth coil pattern 24 and the fifth coil pattern 25 overlap with the first to third coil patterns 21 to 23 are the 11th to 18th through holes T11 to T18 Hole regions R11 to R16 that can be arranged.

That is, when viewed from the first PCB 11 as a reference, portions of the left and right recessed portions and the inner region of the upper protruding portions of the first to third coil patterns 21 to 23, the inner region of the lower protruded portion, And some of them correspond to the through hole regions R11 to R16.

The 11th to 18th through holes T11 to T18 are arranged in the through hole regions R11 to R16 and the first to fifth coil patterns 12 to 15 are formed by using the third to fifth jumper line patterns J11 to J13, 21 to 25 are connected, one stator coil is formed.

That is, the first coil pattern 21 of the first PCB 11 is wound in the clockwise direction in the start portion S1, and the end portion E1 is wound on the second PCB 12 The end portion E2 of the second coil pattern 22 is connected to the start portion S2 of the second coil pattern 22 of the third PCB 13 via the seventeenth through hole T17, 3 coil pattern 23, as shown in Fig.

The end portion E3 of the third coil pattern 23 is connected to the start portion S4 of the fourth coil pattern 24 of the fourth PCB 14 through the eleventh through hole T11, The end portion E4 of the fourth coil pattern 24 and the start portion S5 of the fifth coil pattern 25 are interconnected through the third to fifth jumper line patterns J11 to J13.

The end portion E5 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, The start portion S1 of the pattern 21 is connected to the second output terminal Out2 of the motor drive circuit 30 through the 18th through hole T18.

In the stacked-type stator according to the second embodiment of the present invention, a part of the motor drive circuit 30 mounted on the fourth PCB 14 is disposed on the left side and a part of the motor drive circuit 30 is dispersed on the right side.

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

That is, in the stacked stator according to the second embodiment, the six radial pattern portions of the first to third coil patterns 21 to 23 of the first to third PCBs 11 to 13 are arranged at the same position, When the driving power supply Vcc is supplied, the coils are stacked in the same position and the flow direction of the current is set in the same direction, so that the combined torque can be generated have.

On the other hand, as the aspiration motor using the stacked stator according to the present invention, a single-phase motor is arranged such that one hall sensor H1 is disposed on a PCB forming a stator for rotor position detection, A dead point preventing yoke can be employed. When the dead point prevention yoke is used, the initial position of the rotor can be set to stop at a preset position. If the hall sensor is installed at a position where the dead point can be prevented in consideration of the initial position of the rotor, have.

8 is an explanatory view for explaining the arrangement relationship between the dead point prevention yoke for self-starting and the Hall element in the aspiring motor according to the present invention.

12 and 13, in the case of employing one Hall sensor in the present invention and employing a dead point prevention yoke disposed on the lower side of the stator, as shown in Fig. 8, the dead point prevention yoke 170 is composed of a flat plate having a hexagonal outer circumferential surface and a circular inner circumferential surface in the same manner as the number of poles of the rotor (six poles).

The dead point prevention yoke 170 preferably uses soft magnetic material having low coercive force such as silicon steel or pure iron so as to serve as yoke.

In this case, when the rotor 120 is in the initial state, a gap between the magnet 121 of the rotor 120 and the dead point prevention yoke 170 is formed by the magnetic phenomenon, 170) is located opposite to the widest point (i.e., the edge) of the effective area.

Therefore, it is preferable that the Hall element H1 is provided at a position shifted from the interface 121g of the magnetic pole by 1/4 magnetic pole width (15˚ in the case of a six pole rotor) or by a 3/4 magnetic pole width. The reason why the Hall element H1 is disposed at a position shifted by 1/4 the width of the magnetic pole from the interface of the magnetic pole is that since the magnetic flux generated from the magnet at this point is the maximum, the Hall element H1 is the rotor position detection signal . ≪ / RTI >

Further, in the present invention, the Hall element H1 is disposed at a position which is 1/4 of the magnetic pole width from the boundary surface 121g of the magnetic pole in the first to third coil patterns 21 to 23 of the stator, 0.0 > 20g-20l < / RTI >

8, one of the radiation pattern portions 20g to 20l, for example, the radiation pattern portion 20l coincides with the Hall element H1, and at a position where the radiation pattern portion 20l has a 1/4 magnetic pole width from the boundary surface of the magnetic pole When the driving power is applied to the motor driving circuit and the rotor is started, the rotor position detection signal with the best sensitivity can be obtained from the Hall element H1, and the magnetic flux generated from the magnet 121f Since the radiation pattern portion 20l is opposed to the point where the radiation pattern portion 20 is at the maximum, the self-starting operation is performed more easily.

When the rotation direction of the rotor is counterclockwise (CCW), it is preferable that the Hall element H1 is provided at a 1/4 magnetic pole width point in the counterclockwise direction from the hexagonal corner of the dead point prevention yoke 170 And the rotation direction is the clockwise direction (CW), the Hall element H1 is installed at the 1/4 pole width point in the clockwise direction from the hexagonal corner of the dead point prevention yoke 170 to avoid the self-starting disabled phenomenon .

9, a sensing coil pattern 26 for detecting a rotor position is formed on a first PCB 11 arranged with a coil pattern 21 in order to implement a sensorless motor driving circuit according to the present invention. A modified example formed is shown.

The sensing coil pattern 26 should be selected from three recesses located between the three protrusions forming a space that is not overlapped with the first coil pattern 21 of the first PCB 11, A pair of through holes T8 and T9 for drawing both ends of the sensing coil pattern 26 to the fourth PCB 14 should be disposed in a space that does not overlap with the fifth to fifth coil patterns 21 to 25, It is necessary to consider the connection relation with the motor driving circuit 30 formed on the fourth PCB 14. [

The sensing coil pattern 26 according to the present invention is disposed in the groove of the first PCB 11 in consideration of the above matters and has a fan shape as a whole and has a conductive shape which is formed in a spiral shape from the inside to the outside in a clockwise direction Pattern.

In this case, the sensing coil pattern 26 constituting the sensing coil Ls is disposed on the first layer PCB 11 of the stator 110, and preferably the middle of the sensing coil pattern 26 is the interface 121g by a 1/4 magnetic pole width.

The reason why the sensing coil pattern 26 is provided at this position is that when the initial state of the rotor 120 is taken into account, this point avoids the dead point and the magnetic flux generated from the magnet 121 is maximum, 26 can generate the rotor position detection signal with the highest sensitivity.

That is, in consideration of the initial state of the rotor 120, the sensing coil pattern 26 is separated from the boundary surface 121g of the magnetic pole by a 1/4 magnetic pole width (15 ° in the case of a six pole rotor) (15 [deg.] In the case of a six-pole rotor).

As described above, when the sensing coil pattern 26 is separated from the boundary surface 121g of the magnetic pole by a 1/4 magnetic pole width (15 ° in the case of a six pole rotor) or 1/4 magnetic pole width from the center of the magnetic pole The sensing coil pattern 26 is moved out of the magnetic pole interface (i.e., neutral point) of the rotor and the magnet 121b is moved to the position of the magnet 121b when the driving power is applied to the motor driving circuit and the rotor is started. The sensing coil pattern 26 is opposed to the point where the magnetic flux generated from the magnetic flux generating means is the maximum.

That is, the sensing coil pattern 26 is positioned at a position displaced from the magnetic pole interface surface 121g of the rotor positioned by the dead point prevention yoke 170 when the rotor is in an initial state, and is overlapped with one of the radial pattern portions The sensing coil pattern 26 can generate the rotor position detection signal with the highest sensitivity and the stator can generate the magnetic flux at the rotor position that generates the maximum magnetic flux, One of the parts is superimposed so that the largest magnetic field interacts with the maximum magnetic flux and has the optimal conditions necessary to start the rotor.

9, when the sensing coil pattern 26 is formed on the first PCB 11 facing the rotor, when the magnet approaches the sensing coil pattern 26 during rotation of the rotor, An induced electromotive force is generated by the electromagnetic induction, and the motor drive circuit 30 changes the direction of the current flowing in the stator coil by turning on the switching element by using the induced electromotive force.

In the present invention, since the copper foil of the PCB substrate is patterned by the arranging process as shown in Fig. 9, the sensing coil pattern 26 can be formed at the same time while forming the coil pattern for the stator coil, so that the manufacturing cost is not increased.

Hereinafter, a sensorless motor driving circuit for driving a sensorless single-phase motor applied to a motor for escaping will be described with reference to FIG.

When the external power supply Vcc is applied to one side of the sensorless motor driving circuit 30, a constant voltage circuit 90 for generating a constant driving power supply Vdd provided to the downstream comparator is connected.

The sensorless motor driving circuit 30 includes a first comparator OP1 configured by using an operational amplifier and receives a rotor position signal in which a high level H and a low level L are repeated periodically in accordance with the rotation of the rotor A rotor position signal generating unit 31; And a second comparator OP2 configured by using an operational amplifier and configured to switch the direction of the current flowing to the stator coil L1 according to the output level of the rotor position signal inputted from the rotor position signal generator 31, Circuit 32. In this embodiment,

The rotor position signal generating section 31 is connected in parallel to the voltage dividing circuit formed by the resistors R3 and R6 between the output terminal of the constant voltage circuit 90 and the ground, A constant first reference voltage Vref1 is applied to the non-inverting input terminal (+) of the first comparator OP1 through the resistor R4 and the inverting input terminal (- Is connected to the first reference voltage Vref1 via the sensing coil Ls for rotor position detection constituted by the sensing coil pattern 26 shown in Fig. 9 from the connection point of the resistor R3 and the resistor R6, And an induced electromotive force induced in the electromotive force Ls is applied.

The resistor R7 connected between the non-inverting input terminal (+) of the first comparator OP1 and the output terminal is used to rectify the output of the first comparator OP1. The output of the first comparator OP1 is a square wave Format.

The switching circuit 32 applies a rotor position signal generated from the rotor position signal generating section 31 to the inverting input terminal (-) and outputs the resistance R3 of the voltage dividing circuit to the non-inverting input terminal (+ A constant second reference voltage Vref2 is applied from the connection point of the resistors R5 and R6 through the resistor R5. The resistor R9 connected between the non-inverting input terminal (+) of the second comparator OP2 and the output terminal is used to rectify the output of the second comparator OP2 and the output of the second comparator OP2 is a square wave Format.

The stator coil L1 and the resistor R8 constituted by the first to fifth coil patterns 21 to 25 are connected in parallel between the output terminal of the switching circuit 32 and the inverting input terminal (-).

An FG signal output unit 34 is connected to the output of the second comparator OP2 and a FG signal output unit 34 is connected to the output of the second comparator OP2 through a resistor R10 And an FG signal output terminal for receiving the feedback of the motor speed through the motor. The unexplained member number C1 is used for bypassing the high frequency noise contained in the FG signal.

Since the sensing coil pattern 26 is disposed on the first PCB 11 of the stator 110, the rotor 120, in which the N poles and the S pole magnets are arranged alternately, When the pole magnets face each other, an induced electromotive force (that is, back electromotive force (Back EMF)) is generated in accordance with electromagnetic induction from the sensing coil Ls and the direction of the current flowing along the sensing coil Ls is determined by the right- do.

At this time, a change in the magnetic force line (magnetic field intensity) applied to the sensing coil Ls is generated in the form of a sinusoidal wave according to the rotation of the opposing N-pole magnet, and thus the induced electromotive force induced in the sensing coil Ls is also changed A change in sinusoidal wave form occurs with a phase difference of 1/4 (90 degrees).

Therefore, the induced electromotive force induced in the sensing coil Ls is added to the first reference voltage Vref1 and input to the inverting input terminal (-) of the first comparator OP1.

Accordingly, the first comparator OP1 has the inverted input terminal (-) having a voltage higher than the first reference voltage Vref1 applied to the non-inverting input terminal (+), so that the output of the first comparator A rotor position signal of level L is generated.

Therefore, the second comparator OP2 is turned on when the second reference voltage Vref2 applied to the non-inverting input terminal + is larger than the rotor position signal of the low level L applied to the inverting input terminal - 2 The output of the comparator OP2 becomes high level (H). The current flows from the output side of the second comparator OP2 to the inverting input terminal (-) of the second comparator OP2 in the stator coil L1.

Thereafter, when the rotor continues to rotate and the S pole magnets face each other, an induced electromotive force (that is, a back electromotive force (Back EMF)) is generated from the sensing coil Ls by electromagnetic induction, Direction is determined as opposed to the case where the N pole magnets are opposed by the right hand rule of Enper.

At this time, a change in the magnetic force line (magnetic field intensity) applied to the sensing coil Ls is generated in the form of a sinusoidal wave in accordance with the rotation of the opposing S-pole magnet, and thus the induced electromotive force induced in the sensing coil Ls is also changed A change in sinusoidal wave form occurs with a phase difference of 1/4 (90 degrees).

Therefore, the induced electromotive force induced in the sensing coil Ls is subtracted from the first reference voltage Vref1 and input to the inverting input terminal (-) of the first comparator OP1.

Thus, the first comparator OP1 has the voltage of the inverting input terminal (-) smaller than the first reference voltage Vref1 applied to the non-inverting input terminal (+), so that the output of the first comparator (OP1) A rotor position signal of level H is generated.

Accordingly, the second comparator OP2 is smaller than the second reference voltage Vref2 applied to the non-inverting input terminal (+) rather than the high-level (H) rotor position signal applied to the inverting input terminal 2 The output of the comparator OP2 becomes low level (L). Therefore, the stator coil L1 is supplied with the current from the inverting input terminal (-) of the second comparator OP2 toward the output side of the second comparator OP2.

As described above, in the present invention, since the direction of the current flowing in the stator coil L1 is periodically switched by the induced electromotive force (that is, the back electromotive force (EMF)) induced in the sensing coil Ls, It is possible to periodically switch the direction of the current flowing from the motor drive circuit 30 to the stator coil L1 without using an expensive rotor position detection sensor such as a sensor. As a result, the rotor rotates in the same direction as the rotating direction.

The sensorless single-phase motor 40 using the sensing coil Ls previously determines the rotation direction of the rotor in either the clockwise direction (CW) or the counterclockwise direction (CCW) differently from the case where the Hall sensor is used, Can not.

Therefore, in the present invention, if the rotor is rotated in either the clockwise direction (CW) or the counterclockwise direction (CCW) after the rotor is started in the initial state, every time the polarity of the rotor is changed, By changing the flow direction of the current to the rotor L1, the rotation is continuously performed in the direction in which the rotor rotates.

Since the outer and inner connection pattern portions 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 when a current flows, the force generated by the Fleming's left- F) in the radial direction does not affect the torque generation.

Therefore, the outer and inner connection pattern portions 20a to 20c and 20d to 20f of the first to fifth coil patterns 21 to 25 serve as paths through which current flows, and the six radiation pattern portions 20g to 20l A tangential force is generated from the rotor 120 to rotate the rotor 120.

The direction of the current flowing in the coil between the adjacent radial pattern portions 20g to 20l is reversed and the magnetic poles of the corresponding magnets of the rotor 120 are also reversely positioned. Pushing or pulling force is generated and the rotor is rotated counterclockwise (CCW).

The rotor position signal generator 31 of the motor drive circuit 30 detects the magnetic pole of the rotor every time the rotor 120 rotates by 60 degrees (electrical angle 180 degrees) The switching circuit 32 changes the current flow direction of the driving current to the first to fifth coil patterns 21 to 25 as the rotor position detection signals of the low level L are alternately generated.

Hereinafter, a slim type aspiration motor and a slim type incase sensor which are implemented by using a laminated stator will be described with reference to FIGS. 11 to 13. FIG.

FIG. 11 shows a slim type aspiration motor implemented using the stacked stator according to the present invention, and FIG. 12 shows a slim type incase sensor according to the first embodiment of the present invention.

11 and 12, the slim type In-Car sensor 100 according to the first embodiment of the present invention includes a laminated stator 110 (Aspiration motor) 40, which is implemented by using a motor (not shown).

The housing 200 has an upper housing 210 having a cylindrical shape and having a suction port 211 through which air is sucked in at one side thereof, and a lower end of the upper housing 210 which is snap- And a lower housing 220 for sealing.

The vibration 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 for supporting a lower portion of the stacked stator 110 protrudes inside the lower housing 220. A terminal guide 221 for receiving the terminal assembly 160 is provided at a lower portion of the lower housing 220 Extended.

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

The lower end portion of the terminal pin 162 is fixed to the lower housing 220 while extending into the terminal guide 221 and the upper end of the terminal pin 162 is integrally formed with the stacked stator 110 And is physically fixed while being electrically connected to the formed motor drive circuit 30 and penetrating the multi-layer substrate 10a. An external connector connected to the air conditioning control unit CCM is inserted into the terminal guide 221 and connected to the terminal pin 162.

A plurality of magnets 121 having N poles and S poles alternately arranged on the bottom face are arranged in an annular shape on an upper portion of the stacked stator 110 with a predetermined gap therebetween in an axial gap- And an annular back yoke 122 is disposed on the upper portion of 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 to integrally form the impeller 130 and the upper end of the rotary shaft 140 is inserted into the center of the rotor support 123 to form a single body.

The rotor 120 and the impeller 130 are integrally formed by arranging the back yoke 122 and the magnet 121 in an annular shape in the mold and vertically arranging the rotary shaft 140 in the center, The back yoke 122, the magnet 121 and the rotary shaft 140 are integrally formed with the rotor support body 123 while the rotor support body 123 is being formed and the impeller (not shown) is formed on the upper surface of the rotor support body 123 in the circumferential direction 130 are integrally formed.

The center of the rotor support body 123 is formed with a groove 124 upwardly in the bottom surface thereof and a through hole 124 of the stacked stator 110 is formed in the groove 124 from the base plate 310 of the bearing holder 300 15 and a cylindrical boss 330 having a groove 331 in the downward direction from the upper side to accommodate the sleeve bearing 180 is disposed at the center.

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

A splash-proof oil cap 340 is coupled to the upper portion of the cylindrical boss 330 to prevent leakage of the oil filled in the groove 331 due to the rotation of the rotation shaft 140.

The base plate 310 of the bearing holder 300 is disposed in a direction perpendicular to the cylindrical boss 330 and a thrust plate for supporting the rotation shaft 140 of the rotor 120 is formed at the center of the base plate 310. [ and a dead point prevention yoke 170 (see FIG. 8) is disposed outside the thrust plate 320. The dead point prevention yoke 170 (see FIG.

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

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

The upper housing 210 is provided with a bridge 212 for installing a temperature sensor 150 at an intermediate portion between the upper portion 216 and the lower portion 217. A suction port 211 is formed at the center of the bridge 212, A temperature sensor guide 213 for guiding and guiding the temperature sensor 150 is protruded from the front end of the housing.

One end of the lead wire 151 of the temperature sensor 150 is connected to a circuit portion formed in the stacked stator 110 and is led out to the upper portion 216 of the upper housing 210 through a through hole 214 formed in one side wall surface. And then extends along the bridge 212 and the temperature sensor support 213 to the suction port 211 so that the temperature sensor 150 is positioned at the suction port 211.

The temperature sensor 150 can accurately measure the temperature of the air introduced when the impeller 130 rotates together with the rotor 120 to suck air in the vehicle through the intake port 211 of the upper housing 210 And the measured temperature value is transmitted to the air conditioning control device (CCM) through the terminal pin 160 so as to be used for adjusting the temperature of the vehicle.

The upper portion 216 of the upper housing 210 is smaller in diameter than the lower portion 217 and the incase sensor 100 is disposed at a boundary between the upper portion 216 and the lower portion 217, A cushion pad 218 for blocking the noise generated by the operation of the aspiration motor 40 from entering the room through the grill or the instrument panel when the cushioning pad is installed on the back surface of an automobile grill or an instrument panel, .

Referring to Fig. 13, the slim type incase sensor according to the second embodiment of the present invention is the same as the first embodiment shown in Fig. 12 except for a part thereof. Accordingly, like parts are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The second embodiment differs from the housing of the first embodiment in that the lower housing 220a is integrally formed with the bearing holder 300 by injection molding.

 The housing 200 of the first embodiment has a space in which the lower housing 220 accommodates the bearing holder 300 and the terminal assembly 160 but the lower housing 220a of the second embodiment is merely a terminal assembly 160, As shown in FIG.

The second embodiment is the same as the first embodiment except that the number of parts to be managed is reduced by one.

The slim type incase sensor 100 according to the first and second embodiments of the present invention is configured such that when a current flows through the conductive pattern coils 21 to 25 by the motor driving circuit 30, the impeller 130, together with the rotor 120, The air in the vehicle is sucked through the suction port 211 of the upper housing 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 control unit (CCM) through the terminal pin 160.

In the in-car sensor 100 according to the first and second embodiments of the present invention, since the aspiration motor 40 uses the laminated stator 110, A slim structure can be realized as compared with an asymmetric motor.

In addition, since the stacked stator 110 can be manufactured at a time by a batch process, it is possible to manufacture a plurality of stacked stator 110 at a time, which is high in productivity and high in cost competitiveness, and can incorporate a motor drive circuit, have.

In addition, the laminated stator 110 according to the present invention includes the radial pattern portions 20g to 20l oriented in the radial direction so that the coil pattern of each layer can maximize the torque generation efficiency, Can be obtained. As a result, the suction amount of the air sucked from the inside of the vehicle by the aspiration motor is increased, so that more accurate temperature sensing can be performed.

In the above description of the embodiment, coil patterns of a multilayer structure are connected in series, but it is also possible to connect them by a parallel connection.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

The present invention relates to a laminated stator which can be realized in a slim form by using a multilayer printed circuit board (PCB) having a coil pattern capable of maximally achieving torque generation in an opposing rotor, and is applied to an aspiration motor and an incase sensor It is possible.

10: substrate 11-14: PCB
15: Through hole 16: Electronic part
17: Print wiring 18: Soldering land
20a-20f: connection pattern portion 20g-20l: radiation pattern portion
21-25; Coil pattern 26: sensing coil pattern
30: drive circuit 31: rotor position signal generator
32: switching circuit 34: FG signal output section
40: Acceleration motor 100: Inchea sensor
110: stator 120: rotor
121-121f: magnet 121g: interface
122: Back yoke 123: Rotor support
130: Impeller 140:
150: temperature sensor 160: terminal assembly
170: Dead point prevention 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: step jaw 300: bearing holder
310: base plate 320: thrust plate
330: boss 10a: multilayer substrate
E1-E5: End part J1, J2, J11-J13: Jumper line pattern
R1-R6, R11-R16: Through hole region R10: Outer space
S1-S5: Start portion T1-T7, T11-T18: Through hole
H1: Hall element

Claims (22)

A multilayer substrate made of an insulating material and stacked with a plurality of layers;
A plurality of coil patterns patterned in a helical pattern to form a plurality of turns on each substrate of the multilayer substrate and interconnected through the conductive through holes;
A Hall sensor disposed in the multilayer substrate and disposed at a position deviated from the interface of the rotor pole when the rotor is in an initial state to detect magnetic pole of the rotor; And
And a dead point prevention yoke for setting the position of the rotor such that the Hall sensor is positioned at a position deviated from the magnet interface of the rotor when the rotor is in an initial state,
Wherein the helical coil pattern includes a plurality of radial pattern portions arranged along a radial direction and a plurality of inner and outer connection pattern portions interconnecting the plurality of radial pattern portions, Lt; / RTI >
The Hall sensors are being stacked stator the rotor is placed in the initial state, when the dead point at the same time as preventing the positioning deviation in the position overlapping with one of the radial pattern portion located from the boundary surface of the rotor magnetic pole position is set by the yoke. delete The method according to claim 1,
Wherein the helical coil pattern has a pattern in which protrusions and recesses are repeated on an outer periphery of a through hole formed in a central portion of the multilayer substrate. The method according to claim 1,
The multi-
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. The method according to claim 1,
Wherein a plurality of radial pattern portions of the plurality of coil patterns are connected in such a manner that a current flows in the same direction and generates a rotational force in a tangential direction to the rotor in accordance with the current flow. 6. The method of claim 5,
Wherein a plurality of coil patterns formed on the respective substrates of the multilayer substrate have the same shape. 6. The method of claim 5,
The plurality of coil patterns are formed in the same shape, and the coil patterns arranged in the even-numbered layers are rotated by the number of the 360 ° / radial pattern portions with respect to the center of the through hole in the coil pattern arranged on the odd- . The method according to claim 1,
Wherein the number of the radiation pattern portions is set to be the same as the number of the rotor poles, one half of the number of the rotor poles and two times the number of the rotor poles. The method according to claim 1,
Wherein a starting portion and an end portion of the coil pattern are formed wider than a portion forming the coil, and at least one through hole and a soldering land surrounding the through hole are disposed. The method according to claim 1,
The dead point preventing yoke is stacked on the lower portion of the stator and has an outer periphery (number of magnetic poles) / N (where N is a weak number of the number of magnetic poles), and the inner periphery has a circular shape. The method according to claim 1,
Wherein the hall sensor is installed at a position deviated by a 1/4 magnetic pole width from the boundary surface of the magnetic pole or the center of the magnetic pole. A rotating shaft;
A rotor rotatably supported on the rotating shaft and having a plurality of N pole magnets and S pole magnets alternately arranged;
A bearing rotatably supporting the rotary shaft;
A bearing holder for receiving and fixing the bearing; And
And a stacked stator disposed opposite to the rotor and having a through hole through which the bearing holder passes,
The stacked stator is the stacked stator according to any one of claims 1 to 11. 13. The method of claim 12,
And a sensing coil pattern formed on one of the plurality of recessed portions of the coil pattern for detecting a rotor rotational position. 14. The method of claim 13,
The motor drive circuit
A rotor position signal generator for generating a rotor position signal corresponding to the rotor magnetic pole when the sensing coil formed by the sensing coil pattern generates an induced electromotive force corresponding to the magnetic pole of the opposing rotor; And
And a switching circuit for switching a direction of a driving current to be applied to the stator coil in response to a rotor position signal generated corresponding to a magnetic pole of the rotor facing the rotor position signal generator. 14. The method of claim 13,
The sensing coil pattern is positioned at a 1/4 magnetic pole width from the magnetic pole interface of the rotor positioned by the dead point prevention yoke when the rotor is in the initial state or at a position deviated by 1/4 magnetic pole width from the center of the magnetic pole, motor. 13. The method of claim 12,
The bearing holder
A base plate disposed at a lower portion of the stator and having the dead point prevention yoke therein; And
And a boss protruding upward through the through hole of the stacked stator from the base plate and receiving and supporting the bearing at a central portion thereof. A rotating shaft;
A rotor having the rotating shaft supported at its center and having a plurality of N pole magnets and S pole magnets alternately arranged;
An impeller fixed to one end of the rotor and rotating together with the rotor;
A bearing rotatably supporting the rotary 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 at the center;
A lower housing for supporting the stacked stator therein;
An upper housing disposed opposite to the lower housing and having a plurality of through holes through which indoor air of a vehicle flows from a front end portion of the impeller when the impeller is rotated and air flows in a portion opposed to the impeller; And
And a temperature sensor disposed in the air flow path through which the air of the upper housing flows to measure the temperature of the air sucked,
The laminated-type stator according to any one of claims 1 to 3, 18. The method of claim 17,
The bearing holder
A base plate disposed at a lower portion of the stator and having the dead point prevention yoke therein; And
And a boss protruding upward from the base plate through the through hole of the stacked stator and receiving and supporting the bearing at a central portion thereof,
Wherein the base plate is integral with the lower housing. 18. The method of claim 17,
A sensing coil pattern formed on one of the plurality of recessed portions of the coil pattern for detecting the rotor rotational position is provided on the uppermost surface of the multilayer substrate,
And a motor driving circuit for applying a driving current to the coil pattern is provided on the lowermost surface of the multilayer substrate. 18. The method of claim 17,
Wherein a plurality of radiation pattern portions of the coil pattern disposed on each layer of the multilayer substrate are disposed at the same position and a current flows in the same direction. 18. The method of claim 17,
Wherein the plurality of coil patterns are connected in series connection or parallel connection. 18. The method of claim 17,
Wherein the rotor is formed in a ring shape, and the width of the ring is formed to be larger than at least the length of the radial pattern portion, and is arranged to face the radial pattern portion.

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