KR20210033613A - Power transfer device for motor driven air vent - Google Patents

Abstract

The present invention relates to an electric air vent, which improves a driving method of a horizontal wing, a vertical wing, and a damper of the air vent into an electric method. The air vent enables power transmitted from a motor to the horizontal wing for controlling a vertical wind direction and power transmitted from the motor to the damper for opening and closing an air flow to be transmitted in a gear driving method, thereby reducing the number of components and costs and accurately controlling operation of the damper for opening and closing the air flow and controlling operation of the horizontal wing for controlling the vertical wind direction.

Description

Power transmission device of electric air vent for automobile {POWER TRANSFER DEVICE FOR MOTOR DRIVEN AIR VENT}

The present invention relates to a power transmission device for an electric air vent for a vehicle, and more particularly, to transmit motor power for controlling the vertical wind direction of a horizontal wing and motor power for opening and closing the air flow of a damper in a gear drive method. It relates to a power transmission system of an electric air vent for an automobile.

In general, air vents that discharge air into the interior by the operation of an air conditioner for a vehicle include a center air vent mounted on the center fascia panel between the driver's seat and the front of the passenger's seat, and side vents mounted on the crash pad on the front side of the driver's seat and the passenger seat. Includes.

Existing air vents have a structure in which a plurality of horizontal and vertical wings, and knobs for operating them are exposed indoors in appearance, so they occupy a large installation space in the center fascia panel or crash pad, and eventually air vents It is a cause of lowering the degree of freedom in design for clusters and AVN devices arranged around them.

Accordingly, due to the enlargement of clusters and AVN (Audio, Video, Navigation) devices mounted in the interior of the vehicle, the mounting position of the air vent is moving to the lower area of the center fascia panel, and in particular, the exterior design of the air vent is up and down. A slim air vent with a low height and long left and right lengths is applied.

The slim-type air vent includes an air duct having a slim structure, a horizontal wing mounted at the outlet position of the air duct to adjust the vertical wind direction, a vertical wing disposed at the rear position of the horizontal wing to adjust the left and right wind direction, and a vertical wing. It is configured to include a damper installed to open and close the air flow at the rear of the wing.

Since the ultimate purpose of such a slim air vent is to improve design freedom for the center fascia panel and crash pad, it is desirable to expose only the horizontal wing to the interior and exclude the rest of the parts.

Accordingly, there is a need to improve the driving method for the horizontal wing, the vertical wing, and the damper by excluding a separate manual operation knob for the driver to manually manipulate the horizontal wing, the vertical wing, and the damper.

Accordingly, the applicant of the present application connects the horizontal wing of the air vent through the output shaft of the driving motor and the link structure, and transmits the rotational force of the driving motor by rotating the driving motor in the forward or reverse direction by operating a touch type switch. A patent application has already been made for an electric air vent device for automobiles (Patent Application No. 10-2018-0055884) that allows the vertical angular rotation of the horizontal wing to be automatically performed by the operation of the link structure.

However, in the case of the previously applied electric air vent device, as a plurality of links are used to transmit power from the drive motor to the horizontal wing, the number of parts is excessive, and in particular, the vertical operation of the horizontal wing due to the accumulation of tolerances of each link. There was a problem that the control became inaccurate.

In addition, the applicant of the present application uses a link bar that moves linearly to the left and right by a motor drive and a cam plate that rotates angularly by the link bar, so that the opening and closing operation of the damper to block or allow the indoor discharge of air is performed in an electric manner. It has already applied for a patent for an electric air vent device for automobiles (Patent Application No. 10-2018-0092227).

However, in the case of the previously applied electric air vent device, as link bars and cam plates are used to transmit power from the motor to the damper, the number of parts is excessive, and in particular, the opening and closing of the damper due to the accumulation of tolerances between the link bar and the cam plate. There was a problem that the motion control became inaccurate.

The present invention has been devised to solve the conventional problems as described above, and the power transmitted from the motor to the horizontal wing to adjust the vertical wind direction and the power transmitted from the motor to the damper to open and close the air flow is a gear drive method. The electric air for automobiles is designed to provide accurate control of the movement of the horizontal wing to control the vertical wind direction and the operation of the damper to open and close the air flow, as well as to obtain the effect of reducing the number of parts and cost by allowing the transmission to be carried out. Its purpose is to provide a vent power train.

In order to achieve the above object, the present invention includes: an air duct in which a horizontal wing is rotatably mounted on an air outlet and a damper is rotatably opened and closed on a rear side; A first actuator and a second actuator mounted at different positions on the outer surface of the air duct; A first power transmission structure connected between the rotation shaft of the horizontal wing and the output shaft of the first actuator to transmit power of the first actuator to the horizontal wing in a gear drive manner; And a second power transmission structure connected between the rotation shaft of the damper and the output shaft of the second actuator to transmit power of the first actuator to the damper in a gear driving manner. It provides a power transmission device for an electric air vent for a vehicle, characterized in that configured to include.

The first power transmission structure may include: a first pinion connected to an output shaft of the first actuator; A second pinion connected to the rotation shaft of the horizontal wing; A first linear motion bar in which a first rack gear hole is formed at a rear end portion to mesh with the first pinion, and a second rack gear hole is formed at a front end portion that meshes with the second pinion; It characterized in that it consists of.

Preferably, the first rack gear hole and the second rack gear hole of the first linear motion bar have the same length, and a rack gear is formed on a lower surface thereof.

The second power transmission structure includes: a driving bar connected to the output shaft of the second actuator so as to be able to move forward and backward; A third pinion connected to the rotation shaft of the damper; A second linear movement bar having an entrance hole through which the driving bar enters and exits at a front end, and a third rack gear hole meshing with the third pinion at a rear end thereof; It characterized in that it consists of.

In particular, an entrance end having an oblique surface having a gradually narrower width is integrally extended at an end portion of the driving bar, and the oblique surface is arranged to be in contact with a wall surface of one side of the entrance hole.

Preferably, the second linear motion bar includes an upper horizontal bar having the entrance hole, a lower horizontal bar having the third rack gear hole, and an upper horizontal bar in order to connect the driving bar at a high position and the damper rotation axis at a lower position. It is characterized in that the vertical bar connecting the bar and the lower horizontal bar is integrally formed.

In addition, a return spring that provides an elastic restoring force in the opening direction of the damper is mounted on the rotation shaft of the damper.

Through the above-described problem solving means, the present invention provides the following effects.

First, the power transmitted from the motor to the horizontal wing to control the vertical wind direction and the power transmitted from the motor to the damper to open and close the air flow can be transmitted by a gear drive method. The operation control and the operation control of the damper for opening and closing the air flow can be accurately performed.

Second, unlike the conventional use of multiple links and cam plates to transmit motor power to the horizontal wing or damper, by using a simple rack and pinion type gear structure, the number of parts and cost can be reduced. have.

1 is a perspective view showing a power transmission configuration transmitted from a first actuator to a horizontal wing as a power transmission device for an electric air vent according to the present invention;
2 to 4 are side views showing an operation of transmitting power from a first actuator to a horizontal wing as a power transmission device for an electric air vent according to the present invention;
5 is a perspective view showing a power transmission configuration transmitted from a second actuator to a damper as a power transmission device for an electric air vent according to the present invention;
6 and 7 are plan views showing an operation of transmitting power from a second actuator to a damper as a power transmission device for an electric air vent according to the present invention;
Figure 8 is a control configuration for the power transmission device of the electric air vent according to the present invention.

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

1 is a perspective view showing an enlarged view of the power transmission configuration transmitted from the first actuator to the horizontal wing among the power transmission devices of the electric air vent according to the present invention, and the accompanying FIGS. 2 to 4 are horizontal from the first actuator. It is a side view showing an operation in which power is transmitted to the wing.

As shown in FIG. 1, the horizontal wing 130 is rotatably mounted at the outlet position of the air duct 100, that is, the outlet position through which air is discharged into the room.

In more detail, the horizontal wing 130 is rotatably mounted at the outlet position of the air duct 100 in order to adjust the vertical wind direction, and for this purpose, for rotation of the horizontal wing 130 The rotation shaft protrudes to one side of the air duct 100.

In addition, a first actuator 110 adopted as a motor capable of forward and reverse rotation is mounted on one outer surface of the air duct 100.

In particular, between the rotation shaft of the horizontal wing 130 and the output shaft of the first actuator 110, the first power transmission structure for transmitting the rotational power of the first actuator 110 to the horizontal wing 130 in a gear drive method ( 210) is connected.

The first power transmission structure 210 includes a first pinion 211 connected to the output shaft of the first actuator 110, a second pinion 212 connected to the rotation shaft of the horizontal wing 130, and the rear A first rack gear hole 213-1 meshing with the first pinion 211 is formed at an end portion, and a second rack gear hole 213-2 meshing with the second pinion 212 is formed at a front end. It consists of a formed straight rod-shaped first linear movement bar 213.

More specifically, after connecting the first pinion 211 to the output shaft of the first actuator 110, and connecting the second pinion 212 to the rotation shaft of the horizontal wing 130, the first pinion ( 211) is inserted into the first rack gear hole 213-1 of the first linear movement bar 213 to engage, and the second pinion 212 is inserted into the second rack gear hole of the first linear movement bar 213 By inserting into (213-2) and engaging it, the first power transmission structure 210 is assembled between the horizontal wing 130 and the first actuator 110.

Preferably, the first rack gear hole 213-1 and the second rack gear hole 213-2 of the first linear movement bar 213 are long through holes having rack gears formed on the lower surface thereof, and the horizontal The wings 130 are formed to have the same length so that the upward rotation angle and the downward rotation angle are equally limited.

Meanwhile, the power transmission device of the electric air vent of the present invention is operated by a driving signal applied from the control module 300.

To this end, the control module 300 includes a touch sensor type switch module 310 mounted around a driver's seat, such as a crash pad in front of a driver's seat or a steering wheel, and an operation signal of the switch module 310, as shown in FIG. 8. And a controller 320 that receives and applies a driving signal to the first actuator 110 or the second actuator 120 to be described later.

Here, an operation flow in which power is transmitted from the first actuator to the horizontal wing is as follows.

Referring to FIG. 2, a first pinion 211 connected to the output shaft of the first actuator 110 is located at an intermediate position in the length section of the first rack gear hole 213-1 of the first linear motion bar 213. As the second pinion 212 connected to the rotating shaft of the horizontal wing 130 is also arranged at the middle of the length section of the second rack gear hole 213-2 of the first linear motion bar 213, The horizontal wings 130 are arranged in a straight line in the front-rear direction.

Accordingly, as the horizontal wings 130 are arranged in a straight line in the front and rear direction, a straight wind that is not biased in the vertical direction may be discharged into the room through the outlet of the air duct 100.

On the other hand, when the direction of the air discharged into the room is to be adjusted upward, the switch module 310 is operated so that the controller 320 applies a one-way rotation driving signal to the first actuator 110.

Subsequently, when the first actuator 110 is driven to rotate in one direction, the first pinion 211 connected to the output shaft of the first actuator 110 rotates in one direction, causing a rotational force on the first rack gear hole 213-1. By transmitting, as shown in FIG. 3, the first linear movement bar 213 moves in a straight line forward.

Subsequently, the second pinion 212 engaged with the second rack gear hole 213-2 of the first linear motion bar 213 rotates in one direction and transmits a one-way rotational force to the horizontal wing 130 As the wing 130 is rotated upward by a predetermined angle, air discharged through the outlet of the air duct 100 can be discharged upwardly toward the room while being guided by the horizontal wing 130 as shown in FIG. 3. have.

Alternatively, when the direction of the air discharged into the room is to be adjusted downward, the switch module 310 is operated so that the controller 320 applies a rotation driving signal in the other direction to the first actuator 110.

Subsequently, when the first actuator 110 is driven to rotate in the other direction, the first pinion 211 connected to the output shaft of the first actuator 110 rotates in the other direction, and the first rack gear hole 213-1 By transmitting the rotational force to, as shown in FIG. 4, the first linear movement bar 213 moves linearly to the rear.

Subsequently, the second pinion 212 engaged with the second rack gear hole 213-2 of the first linear motion bar 213 rotates in the other direction and transmits the rotational force in the other direction to the horizontal wing 130 , As the horizontal wing 130 rotates downward by a predetermined angle, air discharged through the outlet of the air duct 100 as shown in FIG. 4 is discharged downward toward the room while being guided by the horizontal wing 130 Can be.

5 is a perspective view showing the power transmission configuration of the electric air vent according to the present invention, which is transmitted from the second actuator to the damper. It is a plan view showing the transmitted operation.

Inside the air duct 100, a damper 140 for blocking or allowing air flow is mounted to be openable and closed as shown in FIGS. 6 and 7.

In addition, a type of solenoid type second actuator 120 that outputs a forward and backward linear motion force is mounted on the upper surface of the air duct 100.

In particular, between the rotation shaft of the damper 140 and the output shaft of the second actuator 120, the second power transmission structure of a gear drive method that converts the power of the second actuator 120 into rotational force and transmits it to the damper 140 220 is connected.

The second power transmission structure 220 includes a driving bar 221 connected to the output shaft of the second actuator 120 so as to be forward and backward, and a third pinion 222 connected to the rotation shaft of the damper 140 , In the front end, an entry hole 223-1 through which the driving bar 221 enters and exits, and a third rack gear hole 223-2 meshing with the third pinion 222 is formed at the rear end. It consists of two straight line exercise bars (223).

At this time, the driving bar 221 is located on the upper surface of the air duct 100, and the rotation shaft of the damper 140 protrudes from one side of the air duct 100, so that the driving bar 221 is a damper ( 140) in a higher position than the axis of rotation.

Accordingly, the second linear movement bar 223 is provided in a double bent shape in order to connect between the drive bar 221 in the high position and the rotation shaft of the damper 140 in the low position.

Preferably, the second linear exercise bar 223 includes an upper horizontal bar in which the entrance hole 223-1 is formed, a lower horizontal bar in which the third rack gear hole 223-2 is formed, and an upper horizontal bar and a lower horizontal bar. Vertical bars connecting the bars may be provided in an integral double bent shape.

Particularly, at the end of the driving bar 221, an entrance end 221-2 having an oblique surface 221-1 having a gradually narrowing width is integrally extended, and the oblique surface 221-1 is When entering and exiting the entrance hole 223-1 of the second linear exercise bar 223, it comes into contact with the wall surface of one side (indoor side) of the entrance hole 223-1.

Meanwhile, a return spring 142 that exerts an elastic restoring force in the opening direction of the damper 140 is mounted on the rotation shaft of the damper 140.

Therefore, when the driving bar 221 advances, the second linear movement bar 223 is forward when the wide diagonal surface of the diagonal surface 222-1 contacts the wall surface of one side of the access hole 223-1. When the driving bar 221 moves backward, the narrow diagonal surface of the diagonal surface 222-1 contacts one wall surface of the access hole 223-1, and at the same time, the return spring 142 The second linear motion bar 223 moves backward by the elastic restoring force.

Here, an operational flow in which power is transmitted from the second actuator to the damper is as follows.

6, the third pinion 222 connected to the rotational shaft of the damper 140 is arranged at the front position of the length section of the third rack gear hole 223-2 of the second linear motion bar 223 Together, when a narrow diagonal surface of the driving bar 221 is in contact with one wall surface of the entrance hole 223-1 of the second linear exercise bar 223, the The damper 140 is in parallel with the internal air passage of the air duct 100 and is maintained in an open state.

On the other hand, when the damper 140 is to be closed to block air flow, the switch module 310 is operated so that the controller 320 applies a forward driving signal to the second actuator 120.

Subsequently, when the driving bar 221 advances a predetermined distance by driving (ON) of the second actuator 120, the entrance end 221-2 formed at the end of the driving bar 221 is By further being inserted into the entrance hole 223-1 of the linear exercise bar 223 and moving forward, the wide diagonal surface of the oblique surface 221-1 section of the entrance end 221-1 is the entrance hole 223-1. ) And pulls the second linear movement bar 223 forward while in contact with the wall surface of one side.

Subsequently, when the second linear exercise bar 223 advances forward, the rack gear formed in the third rack gear hole 223-2 of the second linear exercise bar 223 is connected to the rotation axis of the damper 140. The 3-pinion 222 is rotated in one direction (damper closing direction).

At the same time, by the rotation of the third pinion 222, the damper 140 is arranged in a closed state perpendicular to the inner air passage of the air duct 100, thereby blocking air flow to the room. .

On the other hand, when the second actuator 120 is deactivated (OFF), the driving bar 221 moves backward by a certain distance, and the entrance end 221-2 formed at the end of the driving bar 221 is successively formed. As it is removed from the entrance hole 223-1 of the second linear exercise bar 223, the narrow slope of the section of the oblique surface 221-1 of the entrance end 221-1 is one side of the entrance hole 223-1. When it comes into contact with the wall surface, the second linear motion bar 223 moves rearward by the elastic restoring force of the return spring 142.

Accordingly, by moving the second linear moving bar 223 to the rear, the rack gear formed in the third rack gear hole 223-2 of the second linear moving bar 223 is connected to the rotation axis of the damper 140. By rotating the third pinion 222 in the other direction (damper open direction), the damper 140 may be converted to an open state again.

As seen above, the power transmitted from the first actuator to the horizontal wing to control the vertical wind direction and the power transmitted from the second actuator to the damper to open and close the air flow can be transmitted in a gear drive method. The operation control of the horizontal wing for directional wind direction control and the operation of the damper for opening and closing of air flow can be accurately performed, and moreover, a plurality of links and cam plates were used to transmit motor power to the horizontal wing or damper. In contrast, by using a simple rack and pinion type gear structure, it is possible to reduce the number of parts and reduce costs.

100: air duct
110: first actuator
120: second actuator
130: horizontal wing
140: damper
142: return spring
210: first power transmission structure
211: first pinion
212: second pinion
213: first linear motion bar
213-1: 1st rack gear hole
213-2: 2nd rack gear hole
220: second power transmission structure
221: drive bar
221-1: Slant surface
221-2: Entrance
222: third pinion
223: second linear motion bar
223-1: Access Hall
223-2: 3rd rack gear hole
300: control module
310: switch module
320: controller

Claims (7)

An air duct in which a horizontal wing is mounted to be rotatable up and down at the air outlet, and a damper is mounted to be open and rotatable at a rear side;
A first actuator and a second actuator mounted at different positions on the outer surface of the air duct;
A first power transmission structure connected between the rotation shaft of the horizontal wing and the output shaft of the first actuator to transmit power of the first actuator to the horizontal wing in a gear driving manner; And
A second power transmission structure connected between the rotation shaft of the damper and the output shaft of the second actuator to transmit power of the first actuator to the damper in a gear driving manner;
Power transmission device of an electric air vent for a vehicle, characterized in that configured to include.
The method according to claim 1,
The first power transmission structure is:
A first pinion connected to the output shaft of the first actuator;
A second pinion connected to the rotation shaft of the horizontal wing;
A first linear motion bar in which a first rack gear hole is formed at a rear end portion to mesh with the first pinion, and a second rack gear hole is formed at a front end portion that meshes with the second pinion;
Power transmission device of an electric air vent for a vehicle, characterized in that consisting of.
The method according to claim 2,
A power transmission device for an electric air vent for a vehicle, characterized in that the first rack gear hole and the second rack gear hole of the first linear motion bar have the same length and a rack gear is formed on a lower surface of the first rack gear hole and the second rack gear hole.
The method according to claim 1,
The second power transmission structure is:
A driving bar connected to the output shaft of the second actuator so as to be able to move forward and backward;
A third pinion connected to the rotation shaft of the damper;
A second linear movement bar having an entrance hole through which the driving bar enters and exits at a front end, and a third rack gear hole meshing with the third pinion at a rear end thereof;
Power transmission device of an electric air vent for a vehicle, characterized in that consisting of.
The method of claim 4,
The power of the electric air vent for automobiles, characterized in that an entrance end having a gradually narrowing oblique surface is integrally extended at the end of the driving bar, and the oblique surface is arranged to be in contact with one wall surface of the entrance hole. Delivery device.
The method of claim 4,
The second linear movement bar includes an upper horizontal bar having the entrance hole, a lower horizontal bar having the third rack gear hole, and an upper horizontal bar and a lower horizontal bar in order to connect the driving bar at the high position and the damper rotation axis at the lower position. A power transmission device for an electric air vent for a vehicle, characterized in that the vertical bars to be connected are integrally formed.
The method of claim 4,
A power transmission device for an electric air vent for a vehicle, characterized in that a return spring for providing an elastic restoring force in an opening direction of the damper is mounted on the rotation shaft of the damper.

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