KR102681374B1 - Power transfer device for motor driven air vent - Google Patents

Abstract

The present invention is an electric air vent that improves the driving method for the horizontal wings, vertical wings, and dampers of the air vent by using an electric method. In order to control the wind direction in the vertical direction, the power transmitted from the motor to the horizontal wing and the air flow are opened and closed. By transmitting the power from the motor to the damper using a gear drive method, it is possible to reduce the number of parts and reduce costs, as well as control the operation of the horizontal wing for controlling the vertical wind direction and the damper for opening and closing the air flow. The goal is to provide a power transmission device for an electric air vent for automobiles that enables accurate operation control.

Description

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

The present invention relates to a power transmission device for an electric air vent for automobiles. More specifically, the present invention relates to a power transmission device for an electric air vent for an automobile, and more specifically, to transmit the motor power for controlling the vertical wind direction of the horizontal wing and the motor power for opening and closing the air flow of the damper in a gear driven manner. This is about the 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 the automobile air conditioning system include a center air vent mounted on the center fascia panel between the front of the driver's seat and the passenger seat, and a side vent mounted on the crash pad on the front of the driver's and passenger seats. Includes.

Existing air vents have a structure in which multiple horizontal and vertical wings, as well as knobs for operating them, are inevitably exposed to the interior, so they take up a large installation space on the center fascia panel or crash pad, ultimately leading to the air vent This is causing a decrease in the degree of design freedom for clusters and AVN devices placed nearby.

Accordingly, due to the increase in the size of clusters and AVN (Audio, Video, Navigation) devices mounted inside automobiles, the installation location 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 The height is low and the left and right lengths are long, with slim air vents being used.

The slim air vent includes an air duct with a slim structure, a horizontal wing mounted at the outlet of the air duct to adjust the wind direction in the vertical direction, a vertical wing disposed at the rear of the horizontal wing to adjust the wind direction in the left and right directions, and a vertical wing. It is composed of a damper mounted at the rear of the wing to open and close the air flow.

Since the ultimate purpose of this 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 remaining parts.

Therefore, there is a need to eliminate separate manual operation knobs for the driver to manually operate the horizontal wings, vertical wings, and dampers, and to improve the driving method for the horizontal wings, vertical wings, and dampers to an electric type.

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

However, in the case of the previously filed electric air vent device, as multiple links are used to transmit power from the drive motor to the horizontal wing, an excessive number of parts are required, and in particular, due to the accumulation of tolerances of each link, the vertical movement of the horizontal wing is limited. There was a problem with the control becoming inaccurate.

In addition, the applicant of the present application has proposed that the opening and closing operation of the damper to block or allow the discharge of air indoors can be performed in an electric manner using a link bar that moves linearly left and right by a motor drive and a cam plate that rotates each way by the link bar. A patent has already been applied for an electric air vent device for automobiles (Patent Application No. 10-2018-0092227).

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

The present invention was devised to solve the above-described conventional problems, and is a gear-driven method that combines 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. This is an electric air system for automobiles that not only reduces the number of parts and reduces costs, but also accurately controls the operation of the horizontal wing for controlling the wind direction in the vertical direction and the operation of the damper for opening and closing the air flow. The purpose is to provide a vent power transmission device.

In order to achieve the above object, the present invention includes: an air duct in which a horizontal wing is mounted on an air outlet to be rotatable up and down, and a damper is mounted on the rear side to be rotatable in opening and closing; 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 axis of the horizontal wing and the output shaft of the first actuator, and transmitting the power of the first actuator to the horizontal wing in a gear driven manner; and a second power transmission structure connected between the rotation shaft of the damper and the output shaft of the second actuator, and transmitting the power of the first actuator to the damper in a gear driven manner. Provided is a power transmission device for an electric air vent for an automobile, comprising:

The first power transmission structure includes: a first pinion connected to the output shaft of the first actuator; A second pinion connected to the rotation axis of the horizontal wing; a first linear motion bar having a first rack gear hole formed at the rear end to engage with the first pinion and a second rack gear hole formed at the front end to engage with the second pinion; It is characterized by being composed 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 the lower surface thereof.

The second power transmission structure includes: a drive bar connected to the output shaft of the second actuator in a forward and backward manner; A third pinion connected to the rotation axis of the damper; a second linear motion bar having an entrance hole through which the driving bar enters and exits formed at the front end, and a third rack gear hole engaged with the third pinion formed at the rear end; It is characterized by being composed of.

In particular, at the end of the drive bar, an entrance and exit end having a gradually narrowing diagonal surface is integrally formed, and the diagonal surface is arranged to be in contact with one wall of the entrance hole.

Preferably, the second linear motion bar includes an upper horizontal bar with the access hole, a lower horizontal bar with the third rack gear hole, and an upper horizontal bar to connect the drive bar at a high position and the damper rotation axis at a low position. It is characterized in that the vertical bar connecting the bar and the lower horizontal bar is formed as one piece.

In addition, the rotation axis of the damper is characterized by a return spring that provides an elastic restoring force in the opening direction of the damper.

Through the means for solving the above problems, the present invention provides the following effects.

First, the power transmitted from the motor to the horizontal wing for controlling the vertical wind direction and the power transmitted from the motor to the damper for opening and closing the air flow can be transmitted through gear drive, so that the horizontal wing for controlling the vertical wind direction The operation control of the damper for opening and closing the motion control and air flow can be accurately performed.

Second, unlike the existing use of multiple links and cam plates to transmit motor power to the horizontal wing or damper, a simple rack and pinion type gear structure is used, reducing the number of parts and reducing costs. there is.

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

The attached Figure 1 is an enlarged perspective view showing 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 attached Figures 2 to 4 show the horizontal wing from the first actuator. This is a side view showing the movement of power being 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 where air is discharged into the room.

More specifically, the horizontal wing 130 is mounted to be rotatable in the vertical direction at the exit position of the air duct 100 in order to control the vertical wind direction, and for this purpose, a device for rotation of the horizontal wing 130 is installed. The rotation axis protrudes from one side of the air duct 100.

In addition, a first actuator 110, which is 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 axis of the horizontal wing 130 and the output shaft of the first actuator 110, there is a first power transmission structure ( 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 axis of the horizontal wing 130, and A first rack gear hole 213-1 engaged with the first pinion 211 is formed at the end, and a second rack gear hole 213-2 engaged with the second pinion 212 is formed at the front end. It consists of a first linear movement bar 213 formed in the shape of a straight bar.

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 axis of the horizontal wing 130, the first pinion ( 211) is inserted into the first rack gear hole 213-1 of the first linear motion bar 213 and engaged, and the second pinion 212 is inserted into the second rack gear hole of the first linear motion bar 213. By inserting and engaging with (213-2), 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 motion bar 213 are long through holes with rack gears formed on their lower surfaces, and the horizontal The wings 130 are formed to have the same length so that the upward and downward rotation angles are equally limited.

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

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

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

Referring to FIG. 2, the first pinion 211 connected to the output shaft of the first actuator 110 is positioned in the middle of 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 rotation axis of the horizontal wing 130 is arranged at the middle position of the length section of the second rack gear hole 213-2 of the first linear movement bar 213, The horizontal wings 130 are arranged in a straight line in the front-to-back direction.

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

On the other hand, when it is desired to adjust the direction of wind discharged indoors upward, the switch module 310 is manipulated so that the controller 320 applies a one-way rotation drive signal to the first actuator 110.

Then, 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 and applies a rotational force to the first rack gear hole 213-1. By transmitting , the first linear movement bar 213 moves straight forward as shown in FIG. 3.

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

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

Then, 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, the first linear movement bar 213 moves straight backward, as shown in FIG. 4.

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 rotational force in the other direction to the horizontal wing 130. As the horizontal wing 130 rotates downward at a predetermined angle, the air discharged through the outlet of the air duct 100 is discharged downward toward the room while being guided by the horizontal wing 130, as shown in FIG. It can be.

The attached Figure 5 is a power transmission device for an electric air vent according to the present invention, and is a perspective view showing the power transmission configuration from the second actuator to the damper, and the attached Figures 6 and 7 show the power transmission from the second actuator to the damper. This is a top view showing the transmitted motion.

Inside the air duct 100, a damper 140 to block or allow air flow is installed to be openable and closed at the rear thereof, as shown in FIGS. 6 and 7.

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

In particular, between the rotation axis of the damper 140 and the output axis of the second actuator 120, there is a gear-driven second power transmission structure 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 drive bar 221 connected forward and backward to the output shaft of the second actuator 120, a third pinion 222 connected to the rotation axis of the damper 140, and , an entrance hole 223-1 through which the driving bar 221 enters and exits is formed at the front end, and a third rack gear hole 223-2 engaging with the third pinion 222 is formed at the rear end. It consists of two straight movement bars (223).

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

Accordingly, the second linear movement bar 223 is provided in a double bent form to connect the driving bar 221 at a high position and the rotation axis of the damper 140 at a low position.

Preferably, the second linear movement bar 223 includes an upper horizontal bar on which the access hole 223-1 is formed, a lower horizontal bar on which the third rack gear hole 223-2 is formed, an upper horizontal bar and a lower horizontal bar. The vertical bars connecting the bars may be provided in an integrated double bent shape.

In particular, at the end of the driving bar 221, an entry/exit end 221-2 having a gradually narrowing diagonal surface 221-1 is formed to extend integrally, and the diagonal surface 221-1 is formed as described above. When entering or exiting the entrance hole 223-1 of the second linear movement bar 223, it comes into contact with the wall on 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 axis of the damper 140.

Therefore, when the drive bar 221 moves forward, when the wide diagonal surface in the section of the diagonal surface 222-1 contacts the wall on one side of the entrance hole 223-1, the second linear movement bar 223 moves forward. is pulled, and when the drive bar 221 moves backward, the narrow diagonal surface of the diagonal surface (222-1) contacts one wall of the entrance hole (223-1) and at the same time, the return spring (142) The second linear movement bar 223 moves rearward due to the elastic restoring force.

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

Referring to FIG. 6, the third pinion 222 connected to the rotation axis 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 movement bar 223. Also, if the narrow diagonal surface of the diagonal surface (222-1) of the driving bar 221 is in contact with one wall of the entrance hole (223-1) of the second linear movement bar (223), The damper 140 is maintained in an open state parallel to the internal air passage of the air duct 100.

On the other hand, when it is desired to close the damper 140 to block the air flow, the switch module 310 is manipulated so that the controller 320 applies a forward drive signal to the second actuator 120.

Subsequently, when the driving bar 221 advances a certain distance by the driving (ON) of the second actuator 120, the entry/exit end 221-2 formed at the end of the driving bar 221 moves to the second actuator 120. As it is further inserted into the entrance hole (223-1) of the linear movement bar (223) and advances, the wide diagonal surface among the sections of the diagonal surface (221-1) of the entrance end (221-1) is formed in the entrance hole (223-1). ) The second linear movement bar 223 is pulled forward while contacting one wall of the bar.

Subsequently, when the second linear motion bar 223 moves forward, the rack gear formed in the third rack gear hole 223-2 of the second linear motion 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, due to the rotation of the third pinion 222, the damper 140 is arranged in a closed state perpendicular to the internal air passage of the air duct 100, thereby blocking the air flow into the room. .

Meanwhile, when the second actuator 120 is turned off, the driving bar 221 moves backwards a certain distance, and then the entry/exit end 221-2 formed at the end of the driving bar 221 moves backwards. As it exits the entrance hole (223-1) of the second linear movement bar (223), a narrow diagonal surface in the section of the diagonal surface (221-1) of the entrance end (221-1) is on one side of the entrance hole (223-1). It comes into contact with the wall, and at this time, the second linear movement bar 223 moves rearward due to the elastic restoring force of the return spring 142.

Accordingly, as the second linear movement bar 223 moves rearward, the rack gear formed in the third rack gear hole 223-2 of the second linear movement 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 can be converted to the open state again.

As seen above, the power transmitted from the first actuator to the horizontal wing to control the wind direction in the vertical direction and the power transmitted from the second actuator to the damper to open and close the air flow can be transmitted by gear driving method, The operation control of the horizontal wing for controlling the wind direction and the operation control of the damper for opening and closing the air flow can be accurately performed, and furthermore, the existing method of transmitting motor power to the horizontal wing or damper using multiple links and cam plates, etc. In contrast, by using a simple rack and pinion type gear structure, the number of parts and costs can be reduced.

100: air duct
110: first actuator
120: second actuator
130: horizontal wing
140: damper
142: return spring
210: First power transmission structure
211: 1st pinion
212: 2nd pinion
213: 1st straight movement bar
213-1: 1st rack gear hole
213-2: 2nd rack gear hole
220: Second power transmission structure
221: driving bar
221-1: Diagonal side
221-2: Entrance and exit
222: Third pinion
223: Second linear motion bar
223-1: Entry hall
223-2: Third rack gear hole
300: control module
310: switch module
320: controller

Claims (7)

An air duct with a horizontal wing mounted on the air outlet to be able to rotate up and down, and a damper mounted at the rear to be able to open and close;
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 axis of the horizontal wing and the output shaft of the first actuator, and transmitting the power of the first actuator to the horizontal wing in a gear driven manner; and
a second power transmission structure connected between the rotation shaft of the damper and the output shaft of the second actuator, and transmitting the power of the second actuator to the damper in a gear driven manner;
It is composed including,
The second power transmission structure is:
a drive bar connected to the output shaft of the second actuator to be able to move forward and backward, and having an entry and exit end formed at an end;
A third pinion connected to the rotation axis of the damper;
a second linear motion bar having an entrance hole formed at the front end through which the entrance and exit end of the drive bar enters and exits, and a third rack gear hole engaged with the third pinion formed at the rear end;
A power transmission device for an electric air vent for an automobile, characterized in that it consists of.
In 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 axis of the horizontal wing;
a first linear motion bar having a first rack gear hole formed at the rear end to engage with the first pinion and a second rack gear hole formed at the front end to engage with the second pinion;
A power transmission device for an electric air vent for an automobile, characterized in that it consists of.
In claim 2,
A power transmission device for an electric air vent for an automobile, 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 the lower surface of the first rack gear hole.
delete In claim 1,
At the end of the drive bar, an entrance and exit end having a gradually narrowing diagonal surface is integrally formed, and the diagonal surface is arranged to be in contact with one wall of the entrance hole. Transmission device.
In claim 1,
The second linear motion bar includes an upper horizontal bar with the access hole, a lower horizontal bar with the third rack gear hole, an upper horizontal bar, and a lower horizontal bar to connect the drive bar at a high position and the damper rotation axis at a low position. A power transmission device for an electric air vent for automobiles, characterized in that the connecting vertical bars are formed integrally.
In claim 1,
A power transmission device for an electric air vent for an automobile, characterized in that the rotation axis of the damper is equipped with a return spring that provides elastic restoring force in the opening direction of the damper.

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