KR102109728B1 - Small Driving Motor, Actuator for Air Vent System Using the Same and Manufacturing Method thereof - Google Patents

Abstract

The present invention relates to an actuator for an air vent system and a method for manufacturing the same, for driving an operation lever for rotationally driving a vertical and horizontal wind direction adjustment wing of an air vent in accordance with room temperature.
A small drive motor according to the present invention includes a printed circuit board mounted with a motor driving circuit that generates a motor drive signal upon receiving an external control signal; And a stator, a rotor, and a pinion gear integrally formed with the rotor, and a driving motor that generates rotational power through a pinion gear according to the motor driving signal, and includes a terminal between the printed circuit board and the stator. It can be energized using a pin.

Description

A small driving motor, an actuator for an air vent system using the same, and a manufacturing method thereof {Small Driving Motor, Actuator for Air Vent System Using the Same and Manufacturing Method thereof}

The present invention relates to an actuator for an air vent system, and more particularly, to a small drive motor capable of electrically driving the wind direction adjusting wing of the air vent according to the room temperature, an actuator for an air vent system using the same, and a manufacturing method thereof .

In general, the air vent (Air Vent) provided in the instrument panel (Instrument panel) located in front of the interior of the vehicle is mainly applied to the air-conditioning device to flow the air-conditioning airflow generated from the air conditioner or heater into the vehicle interior, the air flow It is installed at the end of the flowing duct in the vehicle interior.

Here, the air vent includes a casing provided in the duct to form an outer periphery, a wind direction adjustment wing provided inside the casing, and a wing knob assembly for rotating the wind direction adjustment wing.

At this time, the wind direction adjustment wing is provided in the horizontal direction and the vertical direction, and is usually provided as a pair of vertical and horizontal direction wind direction adjustment wings in the front and rear direction regardless of the order of the horizontal and vertical direction, through which the wind direction It can be blown up and down and left and right.

The wind direction adjustment wing is provided with a vertical wind direction adjustment wing and a horizontal wind direction adjustment wing in which a plurality of wind direction adjustment wings are arranged in the vertical direction.

The air vent system allows the user to rotate the vertical wind control wing and the horizontal wind control wing through manual operation of the wing knob assembly installed on the vertical wind control wing to adjust the wind direction.

Such a conventional manual air vent for a vehicle has a hassle to be manually operated by a user in order to change the wind direction and air volume of the wind direction control knob and the air volume control knob once set even when the indoor temperature is changed according to the operation of the air conditioner.

In addition, in the conventional air vent, in order to change the direction of the vertical wind control wing and the horizontal wind control wing, an operation of changing the direction of the knob by the passenger or the driver by hand is required, thereby increasing the risk of an accident.

Moreover, in order to continuously move the wind direction to the left and right, a very cumbersome operation that requires the user to directly operate the knob is required.

The air vent system using the electric actuator proposed to improve this problem uses a small motor as a driving source, so soldering when connecting the lead terminal of the stator coil wound on the core of the stator to a printed circuit board (PCB) equipped with a motor driving circuit Method.

However, such a soldering connection may cause defects such as cold soldering and unsoldering, and if the environment is mounted in a vehicle having a lot of vibration, a failure may occur progressively.

Accordingly, recently, the soldering connection between the coil and the PCB is reluctant, or it is required to eliminate the soldering connection process.

As a countermeasure to this, a method of connecting the coil to the PCB using a terminal pin in which a press fit is coupled to the PCB has been proposed instead of the soldering connection process of the coil.

However, the conventional small outer rotor-type motor having a diameter of about 30 mm has a structure in which a sleeve bearing for supporting a rotating shaft is coupled inside a groove of a bearing housing, and a stator core is coupled to an outer circumference of the bearing housing, using a terminal pin for PCB It is difficult to implement a structure to connect the coils.

: Korean Patent Publication No. 10-2004-0035167

The present invention has been devised in view of these conventional problems, and its purpose is to provide an actuator for an air vent system and a method for manufacturing the same for driving an operating lever for rotationally driving a vertical and horizontal wind direction adjustment wing of an air vent. have.

Another object of the present invention is to remove the bearing from the outer rotor type motor, and instead of a soldering connection process of the stator coil, a terminal pin made of a press fit connection between the stator and the printed circuit board (PCB) is used. It is to provide a small drive motor that connects a coil to a PCB by utilizing the space where the bearing is removed, and an actuator for an air vent system using the same.

Another object of the present invention is to provide an actuator for an air vent system having a gear train for decelerating the rotational speed of a motor so as to increase the driving torque of a small drive motor.

Another object of the present invention is to provide an actuator for an air vent system having a miniaturized size by optimally arranging a plurality of gear units constituting a small drive motor and a gear train in a housing.

According to an example of the present invention, a small-sized driving motor includes a printed circuit board (PCB) on which a motor driving circuit that generates a motor driving signal upon receiving an external control signal is mounted; And a stator, a rotor, and a pinion gear integrally formed with the rotor, and a driving motor that generates rotational power through a pinion gear according to the motor driving signal, and includes a terminal between the printed circuit board and the stator. It can be energized using a pin.

As a result, in the present invention, the stator coil can be connected to the PCB by applying the terminal pin by utilizing the space in which the bearing has been removed, so that a method of soldering the lead-out terminal of the stator coil to a printed circuit board (PCB) on which a motor driving circuit is mounted. It is possible to remove the process of connecting to the defect can be removed according to the soldering process.

In this case, the stator includes: a stator core having a plurality of teeth extending on the outside of the annular yoke; A stator support which is integrally formed on the outer circumference of the stator core and has a first support shaft disposed at a central portion; And a stator coil wound around the outer periphery of the tooth on which the stator support is formed, wherein an annular receiving groove is formed around the first support shaft upwardly in the central portion of the stator support, and the rotor supports of the rotor support. The lower end portion may be rotatably supported by the annular receiving groove.

The terminal pin is coupled to the upper conductor portion through a through hole penetrating the stator support between the inner periphery of the stator core and the inner periphery of the annular receiving groove of the stator support, and the lower current-carrying portion is crimped to the through hole of the printed circuit board. Can be.

According to another example of the present invention, the actuator for an air vent system is an actuator for an air vent system that electrically drives an operation lever for rotationally driving a wind direction wing of an air vent, comprising: a box-shaped housing; A printed circuit board installed inside the housing and mounted with a motor driving circuit that generates a motor driving signal upon receiving a control signal from an air conditioning control device (CCM) of the air vent system; A drive motor having a stator, a rotor, and a pinion gear integrally formed with the rotor, and generating rotational power required to drive the operation lever according to the motor drive signal through a pinion gear; And a gear train gear-coupled with the pinion gear and increasing the torque by decelerating the rotational speed of the pinion gear, and between the printed circuit board and the stator may be energized using a terminal pin.

According to the present invention, the actuator for the air vent system is formed integrally on the bottom surface of the housing and has at least one shaft support portion having a groove; And at least one support shaft, one end of which is press-fitted to the groove, and the rotor of the drive motor may be rotatably coupled to the one support shaft.

In addition, the shaft support portion has first to third diameter portions whose outer circumferential diameter decreases in three stages, and a groove in which the lower end of the first support shaft is fixed is formed in the center, and the first diameter portion and the second diameter portion are formed. A printed circuit board may be seated in the first step portion between the stator support portions and the second step portion between the second diameter portion and the third diameter portion.

The rotor includes a plurality of magnets in which N and S poles are alternately arranged; And a rotor support in which the magnet is supported at an outer end and an inner circumferential portion is rotatably coupled to the support shaft, and the pinion gear may be integrally formed on an upper portion of the rotor support.

In addition, the terminal pin is a metal conductor portion that is made of conduction in the form of a bar; A stopper disposed at one end of the conductor portion and serving as a support jaw for setting a position such that the terminal pin is inserted at a certain depth when inserted into the through hole; And a conduction coupling part extending to the lower portion of the stopper and conducting electricity with a conductive pattern disposed on the printed circuit board, the lead terminal of the stator coil connected to the upper end of the conductor part, and energized through a through hole formed in the printed circuit board. The coupling portion is crimped and coupled, and the through hole may be formed with a conductive via.

Moreover, according to the present invention, the actuator for an air vent system includes a first support shaft in which the rotor is rotatably supported; And a first shaft support portion having a groove formed at a lower end of the first support shaft in the center, and having first to third diameter portions in which the outer circumferential diameter is gradually reduced. The stator core further includes: It is integrally formed on the outer periphery and has a stator support in which a through hole is formed in the center, and a through hole of the stator support may be press-fitted to a third diameter of the first shaft support.

In this case, coupling protrusions and coupling grooves may be provided in the outer circumferential portion of the third diameter portion of the first shaft support portion and the inner circumferential portion of the through hole of the stator support. When the engaging projection and the engaging groove are used, the stator support is pressed and coupled to the first shaft support, thereby stably fixing the stator in a fixed position.

According to the present invention, the actuators for the air vent system are respectively formed on the bottom surface of the housing and have first to fourth shaft supports having recesses; And first to third support shafts, each of which has one end supported on the grooves of the first to third shaft support portions, wherein the rotor and pinion gear are rotatably coupled to the first support shaft, and the gears. The trains are respectively rotatably coupled to the second and third support shafts, the gears are coupled to the pinion gears, and the first and second gear units for increasing torque by decelerating the rotational speed of the pinion gears; And a third gear unit that receives the lower end of the fourth shaft support part to be rotatably supported and decelerates the rotation speed of the second gear unit to output torque-enhanced rotation output to the outside of the housing.

In this case, the first gear unit, the first gear is located on the upper side and a plurality of gears are formed on the outer circumference and is rotationally driven by the pinion gear; And a second gear extending to the lower side of the first gear and having a plurality of gears formed on the outer circumference, wherein the second gear unit is located on the upper side and a plurality of gears are formed on the outer circumference and by the second gear. A third gear driven to rotate; And a fourth gear extending to the lower side of the third gear and having a plurality of gears formed on an outer circumference, wherein the third gear unit includes: a rotation shaft supported by the lower end of the fourth shaft supporting part and rotatably supported; And a fifth gear disposed in the middle of the rotation shaft and having a plurality of gears formed on the outer circumference and being rotationally driven by the fourth gear. The upper output portion of the rotation shaft outputs the torque-converted rotation output from the gear train to the outside. A portion may protrude out of the through hole at the top of the housing to output.

In addition, the gear ratio between the pinion gear and the first gear is i1, each of the modules of the pinion gear and the first gear is M1, and the gear ratio between the second gear and the third gear is i2, the second gear and the third gear. When each module of the gear is M2, and the gear ratio between the fourth gear and the fifth gear is i3, and each module of the fourth gear and the fifth gear is called M3, the first to third gear ratio is i1> i2> The i3 relationship is satisfied, and the first to third modules may satisfy the M1 <M2 <M3 relationship.

As described above, the gear ratio (reduction ratio) between the gears is set to be smaller as the output goes, and if the module is set large, a stable high torque output is obtained even if a large torque conversion is made from the upper output portion of the gear train.

Moreover, the fifth gear of the third gear unit is more stable from the upper output of the gear train by setting the pitch diameter (PCD) larger than that of the first gear and the second gear unit of the first gear unit. The output can be obtained.

According to another example of the present invention, the actuator for an air vent system is an actuator for an air vent system that electrically drives an operation lever for rotationally driving a wind direction adjusting wing of an air vent, comprising: a box-shaped housing; First to fourth shaft support portions integrally formed on the bottom surface of the housing and having recesses; First to third support shafts, one end of which is press-fitted to the grooves in the first to third shaft support portions; A connector for receiving a control signal from an air conditioning control device (CCM) of the air vent system on one side of the housing; A printed circuit board installed inside the housing and mounted with a motor driving circuit that generates a motor driving signal upon receiving the control signal; A drive motor having a pinion gear integrally formed with a rotor rotatably coupled to the first support shaft, and generating rotational power required to drive the operating lever according to the motor drive signal through a pinion gear; And a gear train that is geared with the pinion gear and increases the torque by decelerating the rotational speed of the pinion gear, wherein the printed circuit board and the stator of the drive motor can be energized using a terminal pin. .

According to another example of the present invention, a method of manufacturing an actuator for an air vent system prepares a lower housing in which a first to fourth shaft support is integrally formed on a bottom surface while having a box shape, and the first to third A step of press-fitting one end of the first to third support shafts into the grooves of the shaft support portion; Assembling the printed circuit board on which the motor driving circuit is mounted on the outer periphery of the first shaft support part by pressing and assembling it into the lower housing; After forming a stator support by molding with an insulating resin on the outer periphery of the stator core, preparing a stator by winding the stator coil on the outer periphery of the stator support; Assembling a plurality of terminal pins into a through hole of a stator support in order to connect the stator coil with a printed circuit board by a press fit coupling method, and connecting the lead terminals of the stator coil wound on the stator core to the upper end of the terminal pins. ; Assembling and joining the inner circumference of the stator support to the outer circumference of the first shaft supporting portion to interconnect the energized coupling portion of the terminal pin and the motor driving circuit of the printed circuit board; A step of rotatably assembling a rotor in which a pinion gear is integrally formed on an outer circumference of a first support shaft protruding to an upper portion of the stator; Gear coupling having a plurality of gear units coupled to second and third support shafts to the pinion gear; And coupling the upper housing to the lower housing to project the output of the gear train to the outside of the upper housing.

As described above, in the present invention, the operating lever for rotationally driving the vertical and horizontal wind direction adjustment wings of the air vent can be driven by an electric method, and thus the wind direction of the air vent can be adjusted in an automatic or manual mode using the result. The circulation of air in the vehicle can be made automatically.

In addition, in the present invention, a bearing is formed by adopting a structure in which the rotor support is rotatably supported while the support shaft is rotatably supported while the support shaft is integrally formed in the center of the stator support in the outer rotor type motor. Delete, and instead of the soldering connection process of the stator coil, the terminal pin, which is press fit to the PCB, can be connected to the PCB using the space where the bearing is deleted, so that defects caused by the soldering process can be eliminated. have.

Moreover, in the present invention, it is required to increase the driving torque for driving the wind direction adjustment wing by adopting a micro-sized driving motor having a diameter of about 30 mm. To this end, a gear train for increasing the driving torque by slowing down the rotational speed of the motor is required. It is implemented using a minimum gear unit, and as a result, the actuator can be miniaturized by optimally arranging a plurality of gear units constituting an ultra-small drive motor and a gear train inside the housing.

In addition, in the present invention, since the motor is small, it is possible to combine the terminal pins while molding with an insulating resin integrally on the outer periphery of the stator core, considering that the work of winding the coil after assembling the bobbin on the outer periphery of the tooth is poor. By forming the through-holes at the same time and forming a separate insulating bobbin by molding with an insulating resin also on the outer peripheries of the plurality of teeth to which the stator coil is wound, it is possible to improve durability and productivity.

1 is a perspective view showing an actuator for an air vent system according to the present invention.
2 and 3 are enlarged plan and perspective views, respectively, showing a state in which the housing cover is removed in FIG. 1.
4 to 6 are axial cross-sectional views each showing a small drive motor generating rotational power in an actuator according to the first to third embodiments of the present invention.
7A to 7F are plan views sequentially illustrating an assembly process of an actuator for an air vent system according to the present invention.
8 is a cross-sectional view taken along line AA in FIG. 7C.
9 is a plan view showing a stator core used in a stator of a small drive motor according to the present invention.
10A and 10B are plan and bottom views, respectively, showing that a stator support is formed on the outer periphery of the stator core.
11A and 11B are a plan view and a bottom view respectively showing a stator assembly in which a coil is wound on the outer circumference of the stator support and a terminal pin is coupled.
12 is a perspective view illustrating a state in which the stator assembly shown in FIG. 11 is assembled to a housing.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In this process, the size or shape of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout this specification.

The air vent system to which the present invention is applied is, for example, installed on an instrument panel or the like, and is connected to a vertical wind direction adjustment wing and a horizontal wind direction adjustment wing to form an air vent, and a vertical wind direction adjustment wing and a horizontal wind direction adjustment wing, respectively. The first and second actuating levers may include a pair of actuators for driving the first and second actuating levers, respectively.

The pair of actuators for the air vent system are part of a HVAC (Heating, Ventilation, and Air Conditioning) system, and an air conditioning control device through a controller area network (CAN), a local interconnect network (LIN) or a UART communication network inside the vehicle (CCM: Climate Control Module).

Each of the actuators receives a control signal from an air conditioning control device (CCM) according to a user's mode setting, and drives the first and second operating levers, thereby allowing vertical wind control wings and horizontal wind control wings to be supplied to the room. It will control the passage.

1 to 3, the actuator 100 for an air vent system according to the present invention is installed inside a housing 10 of a substantially rectangular box shape according to the reception of a control signal from an air conditioning control device (CCM) of an HVAC system. A printed circuit board 50 on which a motor driving circuit for generating a motor driving signal is mounted, a driving motor 20 for generating rotational power required for an actuator according to a motor driving signal of the motor driving circuit, and the motor 20 It includes a gear train 30 to increase the driving torque by reducing the rotational speed of the.

First, the driving motor 20 generating rotational power in the actuator 100 applies an ultra-compact brushless DC (BLDC) motor having a diameter of about 30 mm in consideration of the overall size of the housing.

The housing 10 is formed in a substantially rectangular box shape, includes a lower housing 12 and an upper housing 14, and is removably coupled to each other by, for example, a snap coupling method. To this end, the lower housing 12 is formed with a plurality of engaging rings 12a to 12e that are snap-connected to a plurality of engaging projections 14a protruding from the outer wall surface of the upper housing 14 from three wall surfaces.

In addition to the snap coupling method, the lower housing 12 and the upper housing 14 may be coupled and fixed using screws or the like.

In addition, a signal transmission cable required to apply a drive signal to the drive motor 20 built in the actuator 100 by receiving a control signal from the air conditioning control device (CCM) of the HVAC system on one side of the housing 10 An occlusal port or connector 60 is formed that is physically / electrically coupled to the connector plug.

On the lower surface of the lower housing 12, first to third shaft supporting portions 120 to 120b for receiving and fixing one end of the first to third supporting shafts 42 to 46 are integrally formed. The third to third support shafts 42 to 46 may be press-fitted to the grooves of the first to third shaft support portions 120 to 120b, respectively, which are formed in the form of cylindrical projections.

Rotor 22 of the motor 20 is rotatably coupled to the first support shaft 42, and first and second gears 30 are formed on the second and third support shafts 44 and 46. The second gear units 34 and 36 are rotatably coupled.

The first to third axial support portions 120 to 120b are formed in a cylindrical projection shape and serve as a support for installing the printed circuit board 50 on which the motor driving circuit is mounted at a predetermined distance from the lower surface of the lower housing 12. Also. Accordingly, the motor driving circuit can be safely mounted on the lower surface of the printed circuit board 50. However, the motor driving circuit may be mounted on the upper surface instead of the lower surface of the printed circuit board 50.

In addition, on the lower surface of the lower housing 12, the lower end of the third gear unit 38 that outputs the torque-converted rotation output from the gear train 30 to the outside in addition to the first to third shaft supports 120 to 120b. A fourth shaft supporting portion 120c for receiving and rotatably supporting is formed protrudingly.

The fourth shaft support portion 120c is formed in a cylindrical projection shape having a relatively larger diameter than the first to third shaft support portions 120 to 120b.

A through hole 14c is formed in a corresponding portion of the upper housing 14 corresponding to the fourth shaft support portion 120c so that the upper output portion 38d of the third gear unit 38 protrudes to the outside.

Three corners of the lower housing 12 are formed with inward round grooves to remove unnecessary space, and the upper housing 14 has screw fixing portions 14b in the three round corner grooves. It is formed to protrude and is used to fix the actuator 100 to the air vent body using a fixing screw or a fixing bolt.

Hereinafter, a small drive motor 20 that is employed in the actuator 100 for an air vent system according to the present invention and generates required rotational power will be described with reference to FIGS. 4 to 6.

Referring to FIG. 4, the small drive motor 20 according to the first embodiment of the present invention includes a first shaft support unit 120 integrally formed with the lower housing 12; A first support shaft 42 having one end fixed to the first shaft support unit 120; A stator 24 having a central portion fixed to the first support shaft 42; And a rotor 22 having an outer circumference of the stator 24 and a predetermined air gap, the magnets 222 are disposed to face each other, and a central portion is rotatably coupled around the first support shaft 42. .

In the small drive motor 20 according to the first embodiment of the present invention, instead of eliminating a bearing that rotatably supports a rotating shaft integrally formed with the rotor, the rotor 22 has a first supporting shaft 42 It is rotatably coupled to) and adopts a structure that rotates around the first support shaft 42 according to the rotating magnetic field from the stator 24.

The stator 24 includes a stator core 242, a stator support 244, and a stator coil 246, a stator support 244 is integrally formed on the outer periphery of the stator core 242, and the stator support ( The stator coil 246 is wound on the outer periphery of 244).

As shown in FIG. 9, the stator core 242 is formed with a plurality of teeth 242a extending outside the annular yoke 242b. For example, a plurality of stator cores are punched out. It may be integrated by laminating the flakes.

An alignment groove 244c is used at the inner circumference of the stator core 242 to be used to align a plurality of flakes. Each of the plurality of teeth 242a is formed in a “T” shape at the tip, and is formed in a slot between adjacent teeth.

The stator support 244 is integrally formed on the upper surface, the lower surface, and the inner circumference, except for the outer surface of the stator core 242, as shown in FIGS. 10A and 10B, and also has a first support shaft ( 42) is fixedly coupled.

The stator support 244 is formed integrally with the stator core 242 by molding with a thermosetting resin, for example, a BMC (Bulk Molding Compound) molding material such as polyester or a thermoplastic resin.

Accordingly, all four sides of the plurality of teeth 242a are surrounded by, for example, a stator support 244 made of an insulator, so that the stator coil 246 is circumferentially provided without a separate insulator bobbin. Can be wound on.

In this case, in the central portion of the stator support 244, an annular receiving groove 244a having a predetermined depth is formed around the first support shaft 42 upwardly, and the coupling force with the first support shaft 42 is formed on the lower side. The extension portion 244b is extended to increase.

The rotor support 226 of the rotor 22 rotating about the first support shaft 42 is rotatably supported in the annular receiving groove 244a, as will be described later. Accordingly, the bearing that rotatably supports the rotor can be removed from the central portion.

The first shaft support portion 120 is formed with a groove in which the lower end of the first support shaft 42 is press-fitted at the center, and the outer circuit is spaced apart from the lower surface of the lower housing 12 by the printed circuit board 50. A stepped portion 122a is formed to serve as a support for supporting the installation.

In this case, the printed circuit board 50 is seated on the stepped portion 122a of the first shaft support portion 120, and the extension portion 244b of the stator support 244 contacts the upper portion of the first shaft support portion 120. While the printed circuit board 50 can be fixed.

The small drive motor 20 according to the first embodiment of the present invention has an outer rotor type motor structure. The stator support 244 is formed with a plurality of through holes 244d for coupling a plurality of terminal pins 26 using a central region from which the bearing is removed. Four terminal pins 26 are used when the drive motor 20 has a three-phase (U, V, W) stator coil 246 Y-connected and a neutral point is drawn out.

The terminal pin 26 is formed in a bar shape and is disposed at one end of the metal conductor portion 262, which is energized, and when the terminal pin 26 is inserted into the through hole 244d, a constant depth A stopper 264 serving as a support jaw for setting a position to be inserted into, and a conductive pattern 266 that extends to the lower portion of the stopper 264 and is electrically conductive with a conductive pattern disposed on the printed circuit board 50. It contains.

The terminal pin 26 is made of a press fit by using equipment in a through hole 244d previously formed in the stator support 244, and is connected to the stator core 242 at the upper end of the conductor portion 262. Fixing is made by connecting the withdrawn terminal of the wound stator coil 246. In this case, the lead-out terminal of the stator coil 246 can be fixed by winding it on the upper end of the conductor portion 262 and then bonding it by solder dipping or the like.

Thereafter, when the stator 24 is assembled as shown in FIG. 4, the energizing coupling portion 266 of the terminal pin 26 is pressed and coupled to the through hole formed in the printed circuit board 50 while the stator coil 246 and the printed circuit board are assembled. The conduction is performed between the conductive patterns of (50).

In this case, the energizing coupling portion 266 has a structure capable of shrinking to enable compression bonding to the through hole of the printed circuit board 50, and the through hole of the printed circuit board 50 is electrically connected to the energizing coupling portion 266. It is preferred that conductive vias are formed for the connection.

As a result, it is possible to eliminate the soldering process of connecting the lead-out terminal of the stator coil 246 to the conductive pattern of the printed circuit board 50 using a direct soldering method.

In the stator 24 shown in FIGS. 11A and 11B, three terminal pins 26 are coupled to the through hole 244d of the stator support 244, and a plurality of teeth 242a each have a “T” shape The stator coil 246 is wound at the connection part between the front end portion and the back yoke 242b.

Meanwhile, as illustrated in FIG. 8, the first shaft support part 120 has first to third diameter parts 122,124 and 126 made of different diameters such that two stepped parts 122a and 124a are formed on the outer circumference. Can be formed.

In this case, the first step portion 122a supports the printed circuit board 50, and the second step portion 124a supports the extension portion 244b of the stator support 244 constituting the stator 24. Can be. In addition, the through-hole of the printed circuit board 50 is press-fit-bonded to the outer circumference of the second diameter portion 124 in the first shaft support portion 120, and the stator support 244 is provided on the outer circumference of the third diameter portion 126. The inner circumferential portion and the lower extension portion 244b may be press-fitted and fixed.

In the first embodiment shown in FIG. 4, when the stator 24 is manufactured, the first support shaft 42 is simultaneously insert-molded while the stator support 244 is formed on the outer periphery of the stator core 242 by an insert molding method. It is integrally formed in the center of the stator support 244 by the method.

However, the coupling between the stator support 244 and the first support shaft 42 is formed in the groove of the first shaft support 120, as in the embodiment shown in FIG. 8, instead of being integrally formed by an insert molding method. It is also possible that the first support shaft 42 is fixed, and the stator support 244 is coupled and fixed to the outer circumference of the first shaft support 120.

11A and 11B, an unexplained member number 244c indicates that the stator 24 is rotated from the first shaft support 120 when the stator support 244 is coupled and fixed to the outer circumference of the first shaft support 120. Points to a key groove to which the engaging projection formed on the outer circumference of the third diameter portion 126 is engaged so as to prevent it.

The small drive motor 20 according to the first embodiment of the present invention is an outer rotor type motor, and the rotor 22 is disposed outside the stator core 242.

As shown in FIG. 4, the rotor 22 is disposed with a predetermined gap on the outer surface of the stator 24, and a plurality of magnets 222 and N magnets 222 in which N and S poles are alternately arranged. It includes a back yoke 224 disposed on the rear surface, and a rotor support 226 integrally formed with the back yoke 224 by insert molding. The plurality of magnets 222 may be formed of, for example, N-pole and S-pole magnets formed of divided pieces.

The back yoke 224 is made of a cup shape with an open central portion, a plurality of magnets 222 are attached to the inner circumferential surface, a plurality of magnets 222 disposed adjacent to each other and a stator 24 generating a rotating magnetic field It may be made of an electromagnetic steel plate to form a magnetic path through which magnetic flux flows.

The lower end of the rotor support 226 is connected to the upper portion of the back yoke 224, and the rotor support 226 is reversed by bending the back yoke connection 226c from the outside of the body portion 226a located on the upper side in two stages. It is extended in the shape of a cup, and inside the body portion 226a, a through hole 226d is formed in the central portion, and an axial coupling portion 226b rotatably coupled to the first support shaft 42 is extended.

In this case, the back yoke connecting portion 226c is bent in two stages from the body portion 226a, and the upper portion of the back yoke 224 is also bent in two stages, thereby increasing the area of the back yoke 224 and the engaging portion, and the terminal. A space for accommodating the upper end of the conductor portion 262 of the pin 26 can also be secured.

Further, a pinion gear 32 serving as a driving gear for driving the gear train 30 is integrally formed on the outer circumference of the body portion 226a.

Here, the rotor support 226 may be integrally formed with a back yoke 224 at one end by molding with a thermosetting resin, for example, a BMC (Bulk Molding Compound) molding material such as polyester or a thermoplastic resin. In addition, the rotor support 226 and the back yoke 224 may be made separately, and then mutually bonded using an adhesive.

The small drive motor 20 according to the first embodiment of the present invention configured as described above is an outer rotor type motor in which the rotor 22 is rotated according to the rotating magnetic field generated from the stator 24, and supports the rotating shaft. The stator support 244 instead of the bearing has a rotor support having an annular receiving groove 244a formed around the first supporting shaft 42 in the central portion and rotatably coupled to the first supporting shaft 42 in the receiving groove. The shaft coupling portion 226b of 226 is seated and rotated.

Accordingly, the small drive motor 20 according to the first embodiment includes a plurality of terminal pins that perform electrical connection between the stator coil 246 and the printed circuit board 50 in a space in which the bearing supporting the rotating shaft is removed from the central portion ( 26) can be arranged, and as a result, it is possible to eliminate the soldering process of connecting the lead-out terminal of the stator coil 246 to the conductive pattern of the printed circuit board 50 by a soldering method.

The small drive motor 20 according to the first embodiment above adopts a structure in which a back yoke 224 is installed on the rear surface of the magnet 222 to form a magnetic path between adjacent magnets 222 of the rotor 22. have.

However, the small drive motor according to the first embodiment of the present invention can be modified as in the second and third embodiments described below.

The second embodiment according to the present invention is the same as the first embodiment except for the rotor structure. In the second embodiment, the rest of the structure is the same as the first embodiment, so the same parts as in the first embodiment are given the same member numbers, and detailed descriptions are omitted.

Referring to Figure 5, the present invention is a magnet support made of an inverted cup shape having a depth of a two-stage structure by omitting the back yoke and bending multiple stages from the body portion 226a of the rotor support 226 as in the second embodiment. (226e) may be extended.

The magnet support portion 226e has the same shape as the profile formed by the back yoke 224 and the back yoke connection portion 226c in the first embodiment.

In addition, in the second embodiment, instead of omitting the back yoke forming the magnetic path, the rotor 22a uses a ring-shaped magnet having a divided magnetization structure for the plurality of magnets 222 in which the N and S poles are alternately arranged. Can be implemented.

The small drive motor according to the present invention may be modified as in the third embodiment shown in FIG. 6.

6, the third embodiment according to the present invention is the same as the second embodiment except for the rotor structure. Therefore, in the third embodiment, the rest of the structure is the same as the second embodiment, so the same parts as in the second embodiment are given the same member numbers, and detailed descriptions are omitted.

In the small drive motor 20 according to the third embodiment of the present invention, the rotor 22b is a back yoke in the form of an annular band between the plurality of magnets 222 and the magnet support 226e, having a width substantially equal to the width of the magnet. (224a) may be made of a structure disposed. In this case, the plurality of magnets 222 may be made of, for example, N-pole and S-pole magnets formed of divided pieces.

The small drive motor according to the third embodiment of the present invention is a small outer rotor type motor in which the rotor 22 is rotated according to the rotating magnetic field generated from the stator 24 in the same manner as the first and second embodiments described above. As, by disposing a plurality of terminal pins 26 in a space where the bearing supporting the rotating shaft is removed, the withdrawal terminal of the stator coil 246 is achieved by achieving electrical connection between the stator coil 246 and the printed circuit board 50. It is possible to remove the soldering process connecting to the printed circuit board 50 by a soldering method.

In addition, the driving motor according to the present invention is a small-sized motor within a diameter of 30 mm, driving to drive the gear train 30 on the outer periphery of the body 226a of the rotor support 226 located above the rotors 22-22b. A pinion gear 32 serving as a gear is integrally formed.

As described above, the actuator 100 for an air vent system according to the present invention is an actuator for driving the first and second operating levers respectively connected to the vertical wind control wing and the horizontal wind control wing, respectively, in a motorized manner. The driving torque is small to drive directly with a miniature motor within 30mm.

Therefore, it includes a gear train 30 for increasing the driving torque by slowing down the rotational speed of the motor 20.

Hereinafter, the gear train 30 according to the present invention will be described with reference to FIGS. 1 to 3.

The gear train 30 according to the present invention includes first and second gear units 34 and 36 rotatably coupled to the second and third support shafts 44 and 46, and the fourth shaft support 120c. The lower end is accommodated and rotatably supported, and includes a third gear unit 38 that outputs the torque converted rotation output to the outside.

The first gear unit 34 is located on the upper side and is made of a large diameter and has a plurality of gears formed on the outer circumference, and the first gear 34a extends to the lower side of the first gear 34a and has a plurality of outer diameters. It includes a second gear (34b) is a gear is formed.

The first gear unit 34 is rotatably coupled through the hole formed in the center to the second support shaft 44 disposed adjacent to the first support shaft 42, the first gear 34a is a drive gear It serves as a driven gear that is geared with a pinion gear 32 that serves as a furnace. In this case, the rotational speed of the first gear unit 34 is relatively small, since the pinion gear 32 of small number of gears and the first gear 34a of large diameter, standby number of gears are coupled. (rpm) represents the rotational speed decelerated than the rotational speed of the motor 20.

In addition, the second gear 34b of the first gear unit 34 serves as a drive gear and is gear-coupled with the second gear unit 36. In the second gear unit 36, a through hole formed in the center is rotatably coupled to a third support shaft 46 disposed adjacent to the second support shaft 44.

The second gear unit 36 is located on the upper side and is made of a large diameter and a plurality of gears are formed on the outer circumference of the third gear 36a, and the third gear 36a extends in a small diameter on the lower side of the third gear 36a. It includes a fourth gear (36b) is a gear is formed.

In this case, the third gear 36a serves as a driven gear that is gear-coupled with the second gear 34b serving as a driving gear, and the second gear 34b of a relatively small diameter and small gear number. Since the third gear 36a of the diameter and the number of atmospheric gears is geared, the rotational speed of the second gear unit 36 represents a reduced rotational speed than the rotational speed of the first gear unit 34.

The fourth gear 36b of the second gear unit 36 serves as a drive gear and is gear-coupled with the third gear unit 38. The third gear unit 38 is rotatably coupled to the lower end of the rotating shaft 38a in the groove of the fourth shaft supporting portion 120c disposed adjacent to the third supporting shaft 46.

The third gear unit 38 is made of a large diameter in the middle of the rotation shaft 38a and a fifth gear 38b formed with a plurality of gears on the outer circumference is integrally formed, and the upper output part of the rotation shaft 38a ( 38d) is partially projected out of the through hole 14c of the upper housing 14 so as to output the torque-converted rotation output from the gear train 30 to the outside.

The diameter of the rotating shaft 38a is set larger than the diameter of the through hole 14c, and the diameter of the upper output portion 38d is set smaller than the diameter of the rotating shaft 38a and the through hole 14c. A stepped portion 38c is formed at the boundary between the rotating shaft 38a and the upper output portion 38d, and the stepped portion 38c is such that the rotating shaft 38a deviates from the through hole 14c of the upper housing 14. It acts as a stopper to hold things.

In addition, the fifth gear 38b of the third gear unit 38 serves as a driven gear that is gear-coupled with the fourth gear 36b serving as a driving gear, and is relatively small in diameter and small gear number. Since the fourth gear 36b and the fifth gear 38b of large diameter and number of standby gears are coupled, the rotational speed of the third gear unit 38 is lower than the rotational speed of the second gear unit 36. Shows.

In the third gear unit 38, the upper output portion 38d partially protruding out of the through hole 14c of the upper housing 14 has a through hole 38e formed therein.

The other ends of the first and second operation levers, which are respectively connected to the vertical wind control wing and the horizontal wind control wing, are coupled to the through hole 38e of the upper output part 38d.

In this case, the opposite ends of the through holes 38e are parallel, and the opposite ends of the opposite ends orthogonal to each other are formed in a round shape, so that the other end of the first and second operating levers is coupled to the through holes 38e. The rotational force of (38) ensures good transmission to the operating lever.

The first gear 34a of the first gear unit 34 in the gear train 30 composed of the first to third gear units 34, 36, and 38 is a pinion gear located at the top end of the motor 20 Since the gear coupling with 32 has to be made, it is positioned at the highest position as shown in FIG. 3.

In addition, the third gear 36a of the second gear unit 36 and the fifth gear 38b of the third gear unit 38 are respectively the second gear 34b and the second of the first gear unit 34. Since gear engagement with the fourth gear 36b of the gear unit 36 has to be performed, it is preferable that the gear is positioned at a lower side sequentially than the first gear 34a.

The fifth gear 38b of the third gear unit 38 has a pitch diameter (PCD) greater than that of the first gear 34a of the first gear unit 34 and the third gear 36a of the second gear unit 36. ) Is designed to obtain a more stable output from the upper output portion 38d of the gear train 30 by setting it larger.

Moreover, the gear ratio (that is, the reduction ratio) between the pinion gear 32 and the first gear 34a of the first gear unit 34 is i1, the pinion gear 32 and the first gear unit ( 34) Each module is called M1, and the gear ratio between the second gear 34b of the first gear unit 34 and the third gear 36a of the second gear unit 36 is i2, the first Each module of the second gear 34b of the gear unit 34 and the third gear 36a of the second gear unit 36 is referred to as M2, and the fourth gear 36b of the second gear unit 36 is The gear ratio between the fifth gear 38b of the third gear unit 38 is referred to as i3, and the fourth gear 36b of the second gear unit 36 and the fifth gear 38b of the third gear unit 38 ) When each module is referred to as M3, gear ratios i1 to i3 and modules M1 to M3 are preferably set as shown in Equations 1 and 2 below. The module M is a unit representing the size of a gear tooth, and is defined as a value obtained by dividing the pitch circle diameter D, which is the diameter of the pitch circle, by the number of gear teeth N.

[Equation 1]

i1> i2> i3

[Equation 2]

M1 <M2 <M3

As in Equation 1 and Equation 2, the gear ratio (reduction ratio) between the gears is set to be smaller as the output increases, and if the module is set large, it is stable even if a large torque conversion is made from the upper output section 38d of the gear train 30. High torque output is obtained.

In general, the reduction ratio of the reduction gear is calculated as (number of teeth of driven gear / number of teeth of driven pinion gear). Accordingly, as described above, when configuring the gear train 30 with the first to third gear units 34, 36 and 38, the overall reduction ratio is determined as shown in Equation 3 below.

[Equation 3]

Reduction ratio = (z2 / z1) × (z4 / z3) × (z6 / z5)

However, the number of gears of the pinion gear 32: z1, the number of gears of the first gear 34a: z2, the number of gears of the second gear 34b: z3, the number of gears of the third gear 36a: z4, The number of gear teeth of the fourth gear 36b: z5, and the number of gear teeth of the fifth gear 38b: z6.

For example, if the number of gear teeth of the pinion gear 32 is 18 and the number of gear teeth of the first gear 34a is 103, the reduction ratio i1 is determined to be 5.722, and the rpm of the drive pinion is 4,000 In the first gear 34a, an output decelerated to 699 rpm is obtained.

The actuator 100 for an air vent system according to the present invention is 120 through the gear train 30 when the output of the small drive motor 20, that is, the pinion gear 32 rotates at 4,000 rpm, for example. Decreasing to: 1, the upper output portion 38d of the gear train 30 lowers the rotational speed to 33 rpm, and as a result, the output torque of the actuator 100 increases from 20 gfcm to 2400.27 gf.cm.

Therefore, the actuator 100 for an air vent system according to the present invention adopts an ultra-small BLDC motor having a diameter of about 30 mm and a minimum gear unit, so that even though it is manufactured in a small size, the first and second operations are performed through sufficiently large torque conversion. The lever can smoothly drive the vertical wind control wing and the horizontal wind control wing.

Hereinafter, an assembly method of an actuator for an air vent system according to the present invention will be described with reference to FIGS. 7A to 7F.

First, as shown in FIG. 7A, the lower housing 12 having a square box shape and having first to fourth shaft supports 120 to 120c integrally formed on the bottom surface is prepared by an injection molding method. Then, one end of the first to third support shafts 42 to 46 is press-fit coupled to the grooves of the first to third shaft support portions 120 to 120b.

Subsequently, as illustrated in FIG. 7B, the printed circuit board 50 on which the driving circuit of the motor 20 is mounted is assembled to the lower housing 12, and the printed circuit board 50 includes first to third shaft supports 120 to 120. A through hole is formed corresponding to the groove of 120b), and the other ends of the first to third support shafts 42 to 46 protrude. The assembled printed circuit board 50 may be fixed to the lower housing 12 using a plurality of fixing members 52.

On one side of the lower housing 12, an occlusal port or connector 60 that is physically / electrically coupled with the connector plug of the signal transmission cable is installed, and the terminal terminal of the connector 60 is connected to the circuit pattern of the printed circuit board 50. do.

The signal transmission cable is used to transmit a signal for applying a drive signal to the drive motor 20 built in the actuator 100 from the air conditioning control device (CCM).

Subsequently, after forming the stator support 244 by molding with an insulating resin on the outer periphery of the stator core 242 as shown in FIGS. 10A and 10B, three phases without providing a separate insulator bobbin as shown in FIGS. 11A and 11B. The stator coil 246 is wound on the outer periphery of the stator support 244 to prepare the stator 24.

Thereafter, in order to connect the three-phase stator coil 246 with the printed circuit board 50, a plurality of terminal pins 26 are coupled to a through hole 244d of the stator support 244 by a press fit method. Assembled and connected to the upper end of the conductor portion 262 by connecting the withdrawal terminal of the stator coil 246 wound on the stator core 242.

Thereafter, as illustrated in FIGS. 7C and 8, in the state where the printed circuit board 50 is press-fit-bonded to the outer circumference of the second diameter portion 124 in the first shaft support portion 120, the outer circumference of the third diameter portion 126 When the stator 24, that is, the inner periphery of the stator support 244 is press-assembled and assembled, the energized coupling portion 266 of the terminal pin 26 is inserted into the through hole (conductive via) formed in the printed circuit board 50. As the compression is coupled, the stator coil 246 is connected to the motor driving circuit of the printed circuit board 50.

Subsequently, as shown in FIG. 7D, the rotor 22 is assembled on the upper side of the first support shaft 42, that is, on the upper portion of the stator 24.

Thereafter, as shown in FIG. 7E, the third gear unit is attached to the fourth shaft support part 120c in the reverse order of the output among the first to third gear units 34, 36 and 38 forming the gear train 30. The lower end of (38) is assembled, and the second gear unit 36 and the first gear unit 34 are sequentially assembled to the third support shaft 46 and the second support shaft 44. Accordingly, the first to third gear units 34, 36 and 38 of the gear train 30 are gear-coupled to the output of the small drive motor 20, that is, the pinion gear 32.

Finally, as shown in Figure 7f, when the upper housing 14 is coupled to the lower housing 12, a plurality of engaging rings (12a ~ 12e) are assembled while the snap coupling is made to the plurality of engaging projections (14a) This is completed. As a result, the upper output portion 38d of the third gear unit 38 protrudes to the outside through the through hole 14c of the upper housing 14.

The actuator 100 according to the present invention is fixedly installed in the air vent body and through-hole of the upper output portion 38d of the third gear unit 38 protruding outward through the through-hole 14c of the upper housing 14 By connecting one end of the first / second operation lever to (38e), the vertical / horizontal wind direction adjustment wing can be driven electrically.

As a result, an air vent system that drives a vertical / horizontal wind direction adjustment wing through a first / second actuation lever with a pair of actuators is installed on the front side of the instrument panel, for example, when installed on the rear surface of the instrument panel. Touch the automatic mode sensor pad on the operation touch panel to automatically circulate air inside the vehicle. By manually touching the up / down, left / right sensor pads in the manual mode, the user can adjust the circulation direction of the internal air in the desired direction.

In the description of the above-described embodiment, the gear train is exemplified as three first to third gear units, but if the reduction ratio of the desired gear train can be obtained, the number of combined gear units can be adjusted.

The present invention can be applied to an actuator for an air vent system that can electrically drive an air vent adjusting wing of an air vent according to room temperature.

10: housing 12: lower housing
14: upper housing 14c: through hole
20: drive motor 22: rotor
24: stator 26: terminal pin
30: gear train 32: pinion gear
34,36,38: Gear unit 34a, 34b, 36a, 36b, 38b: Gear
38a: rotating shaft 38d: upper output
38e: through hole 42,44,46: support shaft
50: Printed circuit board (PCB) 60: Connector
100: actuator 120 to 120c: shaft support
222: magnet 224: back yoke
226: rotor support 242: stator core
242a: Teeth 244: stator support
244a: annular receiving groove 246: stator coil

Claims (20)

A printed circuit board mounted with a motor driving circuit that generates a motor driving signal upon receiving an external control signal; And
It includes a stator, a rotor, and a pinion gear integrally formed with the rotor, and a driving motor generating rotational power through the pinion gear according to the motor driving signal.
Between the printed circuit board and the stator is energized using a terminal pin,
The stator
A stator core having a plurality of teeth extending on the outside of the annular yoke;
A stator support which is integrally formed on the outer circumference of the stator core and has a first support shaft disposed at a central portion; And
It includes; a stator coil wound on the outer periphery of the tooth on which the stator support is formed,
In the central portion of the stator support, an annular receiving groove is formed around the first support shaft upward, and the lower end portion of the rotor support in the rotor is rotatably supported by the annular receiving groove. delete According to claim 1,
The terminal pin is coupled to the upper conductor portion through a through hole penetrating the stator support between the inner circumference of the stator core and the inner circumference of the annular receiving groove of the stator support, and the lower current-carrying portion is crimped to the through hole of the printed circuit board. Small drive motor. An actuator for an air vent system that electrically drives an operating lever that rotates and drives an air vent's wind direction adjustment wing,
Box-shaped housing;
A printed circuit board installed inside the housing and mounted with a motor driving circuit that generates a motor driving signal upon receiving a control signal from an air conditioning control device (CCM) of the air vent system;
A drive motor having a stator, a rotor, and a pinion gear integrally formed with the rotor, and generating rotational power required to drive the operation lever according to the motor drive signal through a pinion gear; And
It includes a gear train for increasing the torque by reducing the rotational speed of the pinion gear and is geared with the pinion gear.
Between the printed circuit board and the stator is energized using a terminal pin,
The stator
A stator core having a plurality of teeth extending on the outside of the annular yoke;
A stator support which is integrally formed on the outer circumference of the stator core and has a first support shaft disposed at a central portion; And
It includes; a stator coil wound on the outer periphery of the tooth on which the stator support is formed,
The center portion of the stator support is formed with an annular accommodating groove formed around the first support shaft upward, and the lower end portion of the rotor support in the rotor is rotatably supported by the annular accommodating groove. The method of claim 4,
At least one shaft support unit integrally formed on the bottom surface of the housing and having a recess; And
It further includes at least one support shaft, one end of which is press-fitted to the grooves in the plurality of shaft supports;
The rotor of the drive motor is an actuator for an air vent system that is rotatably coupled to the one support shaft. The method of claim 5,
The shaft support portion has first to third diameter portions whose outer circumferential diameter decreases in three stages, and a groove in which the lower end of the first support shaft is fixed is formed in the center.
For an air vent system in which a printed circuit board is seated in a first step portion between the first diameter portion and a second diameter portion, and a stator support portion is placed in the second step portion between the second diameter portion and the third diameter portion. Actuator. The method of claim 5,
The rotor
A plurality of magnets in which N and S poles are alternately arranged; And
It includes; a rotor support to which the magnet is supported at an outer end and an inner circumferential portion is rotatably coupled to the support shaft;
The pinion gear is an actuator for an air vent system that is integrally formed on the upper portion of the rotor support. delete The method of claim 4,
The terminal pin is coupled to the upper conductor portion through a through hole penetrating the stator support between the inner circumference of the stator core and the inner circumference of the annular receiving groove of the stator support, and the lower current-carrying portion is crimped to the through hole of the printed circuit board. Actuators for air vent systems. The method of claim 4,
The terminal pin
A metal conductor portion in which conduction is performed in a bar shape;
A stopper disposed at one end of the conductor portion and serving as a support jaw for setting a position such that the terminal pin is inserted at a certain depth when inserted into the through hole; And
It includes a conductive pattern extending to the lower portion of the stopper and a conductive pattern disposed on a printed circuit board and an energized coupling portion to be energized,
An actuator for an air vent system in which a lead-out terminal of a stator coil is connected to an upper end of the conductor portion, a current-carrying coupling portion is crimpedly coupled to a through hole formed in the printed circuit board, and the through hole is formed with a conductive via. The method of claim 4,
A first support shaft on which the rotor is rotatably supported; And
Further comprising; a first shaft support portion having a first to third diameter portion having a groove in which the lower end portion of the first support shaft is fixed at the center, and the outer circumferential diameter is gradually reduced.
The stator is integrally formed on the outer periphery of the stator core and has a stator support having a through hole formed in the center,
An actuator for an air vent system in which a through hole of the stator support is press-fitted to a third diameter portion of the first shaft support portion. The method of claim 11,
An actuator for an air vent system provided with engaging projections and engaging grooves, respectively, on the outer circumferential portion of the third diameter portion of the first shaft support portion and the inner circumferential portion of the through hole of the stator support. The method of claim 4,
First to fourth shaft support portions are formed integrally on the bottom surface of the housing, each having a groove; And
Each one end further includes a first to third support shaft supported by the grooves of the first to third shaft supports;
The rotor and pinion gear are rotatably coupled to the first support shaft,
The gear train
First and second gear units respectively rotatably coupled to the second and third support shafts, gear-engaged with the pinion gear, and increasing torque by decelerating the rotational speed of the pinion gear; And
An actuator for an air vent system comprising a; a third gear unit that receives the lower end of the fourth shaft support part to be rotatably supported and decelerates the rotation speed of the second gear unit to output torque-enhanced rotation output to the outside of the housing. . The method of claim 13,
The first gear unit,
A first gear positioned on the upper side and having a plurality of gears formed on the outer circumference and being rotationally driven by the pinion gear; And
It includes; a second gear extending to the lower side of the first gear and a plurality of gears formed on an outer circumference;
The second gear unit,
A third gear positioned on the upper side and having a plurality of gears formed on the outer circumference and being rotationally driven by the second gear; And
It includes; a fourth gear extending to the lower side of the third gear and having a plurality of gears formed on an outer circumference;
The third gear unit,
A lower shaft is accommodated in the fourth shaft supporting portion to be rotatably supported; And
It is disposed in the middle of the rotating shaft, a plurality of gears are formed on the outer circumference and the fifth gear is rotationally driven by the fourth gear; includes,
The upper output portion of the rotating shaft is an actuator for an air vent system in which a portion of the upper portion of the housing is projected out of the through hole so as to output the torque-converted rotation output to the outside. The method of claim 14,
The gear ratio between the pinion gear and the first gear is i1, and each module of the pinion gear and the first gear is M1,
The gear ratio between the second gear and the third gear is i2, and each module of the second gear and the third gear is M2,
When the gear ratio between the fourth gear and the fifth gear is i3, and each module of the fourth gear and the fifth gear is called M3,
The gear ratio satisfies the relationship i1>i2> i3,
The module is an actuator for an air vent system that satisfies the relationship M1 <M2 <M3. The method of claim 14,
The upper output portion has a through hole to which one end of the operation lever is coupled,
The through-hole is an actuator for an air vent system in which both opposing ends are parallel and opposite opposing ends are rounded. The method of claim 14,
The fifth gear of the third gear unit is an actuator for an air vent system in which the pitch diameter (PCD) is set larger than the first gear of the first gear unit and the third gear of the second gear unit. An actuator for an air vent system that electrically drives an operating lever that rotates and drives an air vent's wind direction adjustment wing,
Box-shaped housing;
First to fourth shaft support portions integrally formed on the bottom surface of the housing and having recesses;
First to third support shafts, one end of which is press-fitted to the grooves in the first to third shaft support portions;
A connector for receiving a control signal from an air conditioning control device (CCM) of the air vent system on one side of the housing;
A printed circuit board installed inside the housing and mounted with a motor driving circuit that generates a motor driving signal upon receiving the control signal;
A drive motor having a pinion gear integrally formed with a rotor rotatably coupled to the first support shaft, and generating rotational power required to drive the operating lever according to the motor drive signal through a pinion gear; And
It includes a gear train that is geared with the pinion gear and increases the torque by slowing down the rotational speed of the pinion gear.
An actuator for an air vent system that is energized using a terminal pin between the printed circuit board and the stator of the drive motor. The method of claim 18,
The gear train,
First and second gear units respectively rotatably coupled to the second and third support shafts, gear-engaged with the pinion gear, and increasing torque by decelerating the rotational speed of the pinion gear; And
An actuator for an air vent system comprising a; a third gear unit that receives the lower end of the fourth shaft support part to be rotatably supported and decelerates the rotation speed of the second gear unit to output torque-enhanced rotation output to the outside of the housing. . Preparing a lower housing in which the first to fourth shaft supporting portions are integrally formed on the bottom surface while having a box shape, and press-fitting one end of the first to third supporting shafts into grooves of the first to third shaft supporting portions step;
Assembling the printed circuit board on which the motor driving circuit is mounted on the outer periphery of the first shaft support part by pressing and assembling it into the lower housing;
Preparing a stator by winding the stator coil on the outer periphery of the stator support after forming a stator support by molding an insulating resin on the outer periphery of the stator core;
Assembling a plurality of terminal pins into a through hole of a stator support in order to connect the stator coil with a printed circuit board by a press fit coupling method, and connecting the lead terminals of the stator coil wound on the stator core to the upper end of the terminal pins ;
Assembling and joining the inner circumference of the stator support to the outer circumference of the first shaft supporting portion to interconnect the energized coupling portion of the terminal pin and the motor driving circuit of the printed circuit board;
A step of rotatably assembling a rotor in which a pinion gear is integrally formed on an outer circumference of a first support shaft protruding to an upper portion of the stator;
Gear coupling having a plurality of gear units coupled to second and third support shafts to the pinion gear; And
A method of manufacturing an actuator for an air vent system, comprising: coupling the upper housing to the lower housing to protrude the output of the gear train to the outside of the upper housing.

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