KR20230101054A - Air ventilation apparatus for vehicle - Google Patents

Abstract

An embodiment includes a duct housing; a pair of Coanda wings accommodated in the duct housing and forming a flow path through which air flows; a wind direction controller disposed between the pair of Coanda wings in the duct housing to control the direction of air; and a drive unit for controlling the Coanda wing according to the control of the wind direction controller, wherein cross-sectional areas of an inlet and an outlet of the flow path formed by the Coanda wing and an intermediate portion between the inlet and the outlet are the same. provide the device.

Description

Air vent device for vehicles {AIR VENTILATION APPARATUS FOR VEHICLE}

The present invention relates to an air vent device for a vehicle, and more particularly, to an air vent device for a vehicle capable of controlling the vertical flow of air discharged from an air vent by using the Coanda effect.

There is an air ventilation in the driver's seat (cockpit) of the car. For wind direction control, the wind direction control wing and knob exposed on the dashboard are used to change the wind direction and discharge port by the user manually or by using a mechanical mechanism. are opening and closing

These wind direction control wings include left and right direction control wings for controlling the left and right flow of air, and up and down direction control wings for controlling the up and down flow of air.

Air vents not only perform their original function related to the circulation of air inside the vehicle, but also play a significant role in the design aesthetics of the cockpit itself. There is an increasing demand for ultra-slim air vents with a discharge port height (top and bottom width) of 20 mm or less.

However, in this ultra-slim type air vent structure, as the upper and lower widths of the discharge port become ultra-slim, the need to control the wind direction with only one vertical direction control wing emerges, so that a desired vertical wind direction angle cannot be obtained.

An object of the embodiment is to provide an air vent device for a vehicle capable of controlling a desired wind direction without reducing the total air volume between the effective sectional area at the front end of the air vent duct and the effective sectional area at the discharge port at the rear end of the air vent duct.

Another object of the embodiment is to provide an air vent device for vehicles capable of maximizing the Coanda effect while minimizing the decrease in air volume when controlling up and down wind directions within an ultra-slim air vent allocated space.

The problem to be solved in the embodiment is not limited thereto, and it will be said that the solution to the problem described below or the purpose or effect that can be grasped from the embodiment is also included.

An air vent device for a vehicle according to an embodiment of the present invention includes a duct housing; a pair of Coanda wings accommodated in the duct housing and forming a flow path through which air flows; a wind direction controller disposed between the pair of Coanda wings in the duct housing to control the direction of air; and a driving unit for controlling the Coanda wing according to the control of the wind direction controller, wherein cross-sectional areas of an inlet and an outlet of the flow path formed by the Coanda wing and an intermediate portion between the inlet and the outlet may be the same. .

The duct housing includes an air inlet communicating with the inlet of the passage, an air outlet communicating with the outlet of the passage, and a hollow between the inlet and the outlet, wherein at least a portion of the cross-sectional area of the hollow is the inlet and outlet. It can be larger than the cross-sectional area.

Each of the pair of Coanda wings may have a folding structure.

The pair of Coanda wings may include a first Coanda wing disposed above the hollow part of the duct housing; and a second Coanda wing disposed below the hollow part of the duct housing.

The first Coanda wing may include a first wing portion disposed adjacent to an air inlet of the duct housing; a second wing portion disposed adjacent to the air outlet of the duct housing; And it may include a first link portion rotatably connecting the first wing and the second wing.

The second Coanda wing may include a third wing disposed adjacent to the air inlet of the duct housing; a fourth wing portion disposed adjacent to the air outlet of the duct housing; And it may include a second link portion rotatably connecting the third wing and the fourth wing.

In addition, the air vent device for a vehicle includes a first air guide disposed between an upper surface of the duct housing and the first Coanda wing in a hollow portion of the duct housing; and a second air guide disposed between the lower surface of the duct housing and the second Coanda wing in the hollow portion of the duct housing.

The first air guide may include a first inlet coupled to an upper surface of the inlet of the duct housing; a first outlet coupled to an upper surface of the discharge port of the duct housing; and a first intermediate portion between the first inlet portion and the first outlet portion, wherein the first outlet portion and the first intermediate portion include a first connection portion in which the first outlet portion and the first intermediate portion are connected. 1 It can be arranged inclined so as to protrude to a higher position than the inlet.

The second air guide includes a second inlet coupled to the lower surface of the inlet of the duct housing, a second outlet coupled to the lower surface of the outlet of the duct housing, and a second air guide between the second inlet and the second outlet. It includes an intermediate portion, and the second outlet portion and the second intermediate portion may be inclined so that a second connection portion connected to the second outlet portion and the second intermediate portion protrudes to a position lower than the second inlet portion.

The first link part and the second link part may be located on a line connecting the first connection part and the second connection part.

The wind direction control unit may include a knob; And a wind direction control wing coupled to the knob and controlling the flow of air discharged through the outlet in an up and down direction,

The wind direction control wing may extend to a position more inward than the first link in the hollow part.

The wind direction control wing may extend to a position further inside the hollow part than the second link.

The driving unit may include a linear gear unit coupled to the first link and the second link to move the first link and the second link in a vertical direction; and a circular gear unit connected to the linear gear unit and the knob to transmit rotational force applied to the knob to the linear gear unit, wherein the linear gear unit may convert the rotational force into a linear shape.

The linear gear unit may include a first coupling unit coupled to the first link at an upper side of the hollow part; And it may include a second coupling portion coupled to the second link at the lower side of the hollow portion.

The circular gear unit may include a first gear unit having a gear that is rotatably coupled to the inside of the side wall of the duct housing and meshes with a gear of the linear gear unit; a second gear part rotatably coupled to the outside of the sidewall of the duct housing and rotating by the same axis as the first gear part; a third gear portion rotatably coupled to an outer side of the sidewall of the duct housing and having a gear engaged with a gear of the second gear portion; and a fourth gear rotatably coupled to the outside of the sidewall of the duct housing, having a gear engaged with the gear of the third gear unit, and coaxially connected to the knob.

An air vent device for a vehicle according to another embodiment of the present invention includes: a duct housing including an air inlet, an air outlet, and a hollow between the air inlet and the outlet; a pair of Coanda wings accommodated in the duct housing and forming a flow path through which air flows; a wind direction controller disposed between the pair of Coanda wings in the duct housing to control the direction of air; and a driving unit controlling the Coanda wings according to the control of the wind direction adjusting unit, wherein a cross-sectional area of at least a portion of the hollow part may be greater than cross-sectional areas of the air inlet and the air outlet.

Cross-sectional areas of an inlet and an outlet of the passage formed by the Coanda wings and an intermediate portion between the inlet and the outlet may be the same.

The pair of Coanda wings may include a first Coanda wing disposed above the hollow part of the duct housing; and a second Coanda wing disposed below the hollow part of the duct housing.

The first and second Coanda wings each have first and second bent parts that are bent when air is discharged upward and downward, and when air is discharged upward, the first and second bent parts are convex upward, , When air is discharged downward, the first and second bent portions may be deformed into a downwardly convex shape.

In addition, the vehicle air vent device is disposed between the upper surface of the duct housing and the first Coanda wing in the hollow portion of the duct housing, and is disposed at a position higher than the air inlet and the air outlet of the duct housing. air guide; and a second air guide disposed between the lower surface of the duct housing and the second Coanda wing in the hollow portion of the duct housing, and disposed at a position lower than the air inlet and the air outlet of the duct housing. can

When air is discharged upward, a space formed by the first Coanda wing and the first air guide may be larger than a space formed by the second Coanda wing and the second air guide.

When air is discharged downward, a space formed by the first Coanda wing and the first air guide may be smaller than a space formed by the second Coanda wing and the second air guide.

The wind direction control unit may include a knob; and a wind direction control wing coupled to the knob and controlling a flow of air discharged through the discharge port in an up and down direction, wherein the wind direction control wing is positioned further inside the hollow part than the first and second bent parts can be extended up to

The driving unit may include a linear gear unit coupled to the first and second bending parts to move the first and second bending parts in a vertical direction; and a circular gear unit connected to the linear gear unit and the knob to transmit rotational force applied to the knob to the linear gear unit, wherein the linear gear unit may convert the rotational force into a linear shape.

The linear gear part may include a first coupling part coupled to the first bending part at an upper side of the hollow part; And it may include a second coupling portion coupled to the second bent portion at the lower side of the hollow portion.

The circular gear unit may include a first gear unit having a gear that is rotatably coupled to the inside of the side wall of the duct housing and meshes with a gear of the linear gear unit; a second gear part rotatably coupled to the outside of the sidewall of the duct housing and rotating by the same axis as the first gear part; a third gear portion rotatably coupled to an outer side of the sidewall of the duct housing and having a gear engaged with a gear of the second gear portion; and a fourth gear rotatably coupled to the outside of the sidewall of the duct housing, having a gear engaged with the gear of the third gear unit, and coaxially connected to the knob.

According to the air vent device for a vehicle according to the embodiment, according to the embodiment of the present invention, the wind passage between the front end (air inlet) of the air vent duct formed by the upper Coanda wing and the lower Coanda wing and the rear end (outlet) of the air vent duct Since the width of the top and bottom of the flow path does not decrease, the effect of controlling the wind direction while minimizing the decrease in the total air volume can be obtained.

In addition, by forming the bent structure of the upper Coanda wing and the lower Coanda wing, the air flowing along the surface of the Coanda wing pulls the air flowing along the center of the flow path (Coanda effect), resulting in an overall It is possible to obtain the effect of inducing the wind flow to be more biased toward the upper or lower part.

In addition, since the front and rear length of the up and down wind direction control wings can be designed to be long with the bent structure of the upper and lower Coanda wings, not only can the effect of stably changing the wind direction be obtained, but also the vertical operating angle is larger. The effect of securing a design space that can be manipulated can be obtained.

In addition, by adjusting the vertical length ratio at the point where the second gear part, which is a circular gear, and the first gear part, which is a linear gear, meet, the upward wind direction is more advantageous, or the downward wind direction is more advantageous, so detailed tuning is possible. When installing an air vent device, it is not necessary to make different molds for each mold, so cost reduction can be obtained.

1 is a front view showing an air vent device for a vehicle according to an embodiment of the present invention;
2 is a side view showing an air vent device for a vehicle according to an embodiment of the present invention;
3A to 3C are side views illustrating air flow conditions according to knob manipulation of an air vent device for a vehicle according to an embodiment of the present invention;
4 is a side view showing air flow comparison between an air vent device for a vehicle according to an embodiment of the present invention and a conventional air vent device for a vehicle;
5A and 5B are views showing the Coanda effect according to a conventional air vent device for a vehicle and an air vent device for a vehicle according to an embodiment of the present invention.

The present embodiments may be modified in other forms or combined with each other, and the scope of the present invention is not limited to each of the embodiments described below.

Even if a matter described in a specific embodiment is not described in another embodiment, it may be understood as a description related to another embodiment, unless there is a description contrary to or contradictory to the matter in another embodiment.

For example, if the characteristics of component A are described in a specific embodiment and the characteristics of component B are described in another embodiment, the opposite or contradictory description even if the embodiment in which components A and B are combined is not explicitly described. Unless there is, it should be understood as belonging to the scope of the present invention

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

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

These terms are only used to distinguish the component from other components, and the term is not limited to the nature, order, or order of the corresponding component.

Hereinafter, an air vent device for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

1 is a front view showing an air vent device for a vehicle according to an embodiment of the present invention, and FIG. 2 is a side view showing an air vent device for a vehicle according to an embodiment of the present invention.

1 and 2, an air vent device for a vehicle according to an embodiment includes a duct housing 10, air guides 30 and 30', Coanda wings 40 and 40', a wind direction controller 50 and A drive unit 60 may be included.

The duct housing 10 is a portion to which an air vent device is mounted and may have a hollow portion having a space therein. The duct housing 10 may also be formed to have an air inlet through which air is introduced at one end and an air outlet through which air is discharged at the other end.

The air guides 30 and 30' may be inserted into the hollow of the air duct housing 10 to limit the air flow range. The air guides 30 and 30' may include an upper air guide 30 and a lower air guide 30' positioned at the upper and lower portions of the air duct housing 10, respectively. The upper air guide 30 and the lower air guide 30' are formed between the air inlet communicating with the air inlet of the duct housing 10, the air outlet communicating with the air outlet of the duct housing 10, and the air inlet and the air outlet. An air flow path of can be formed.

The upper air guide 30 includes a first inlet part 30a fixed to the upper surface of the air inlet of the duct housing 10, a first outlet part 30c fixed to the upper surface of the air outlet of the duct housing 10, and a first It may include a first intermediate portion 30b between the inlet portion 30a and the first outlet portion 30c. The first inlet portion 30a of the upper air guide 30 may be formed to maintain a horizontal state with respect to the vehicle floor. The first middle portion 30b of the upper air guide 30 may be formed to be inclined toward the upper side, and the first outlet portion 30c of the upper air guide 30 may be formed to be inclined toward the lower side. Accordingly, the upper air guide 30 may protrude so that the point where they meet is located at the highest point due to the inclined structure of the first middle portion 30b and the first outlet portion 30c.

The lower air guide 30' includes a second inlet portion 30a' fixed to the lower surface of the air inlet of the duct housing 10, a second outlet portion 30c' fixed to the lower surface of the air outlet of the duct housing 10, and a second intermediate portion 30b between the second inlet portion 30a' and the second outlet portion 30c'. The second inlet portion 30a' of the lower air guide 30' may be formed to maintain a horizontal state with respect to the vehicle floor. The second intermediate portion 30b' of the lower air guide 30' is formed to be inclined toward the lower side, and the second outlet portion 30c' of the lower air guide 30' is formed to be inclined toward the upper side. It can be. Accordingly, the lower air guide 30' may protrude so that the point where they meet is located at the lowest point due to the inclined structure of the second middle portion 30b' and the second outlet portion 30c'.

In this embodiment, the area of the air inlet and the air outlet are the same by the upper air guide 30 and the lower air guide 30', but the first intermediate portion 30b and the second intermediate portion located between the air inlet and the air outlet are The area of the air flow path formed by the portion 30b' and the area of the air flow path formed by the first outlet portion 30c and the second outlet portion 30c' are larger than those of the air inlet and air outlet. can be formed

Both ends of the Coanda wings 40 and 40' inside the air guides 30 and 30' may be arranged to be fixed to the side walls of the duct housing 10. The Coanda wings 40 and 40' include an upper Coanda wing 40 disposed adjacent to the upper air guide 30 and a lower Coanda wing 40' disposed adjacent to the lower air guide 30' can include The upper Coanda wing 40 and the lower Coanda wing 40' may form an air flow path when air introduced from the outside passes therethrough.

The upper Coanda wing 40 includes a first wing portion 40a, a second wing portion 40b, and a first link portion 40c to which the first wing portion 40a and the second wing portion 40b are connected. can include One end of the first wing 40a may be coupled to an upper end of the side wall of the duct housing 10, and one end of the second wing 40b may be coupled to the upper end of the opposite side wall of the duct housing 10. The other end of the first wing portion 40a and the other end of the second wing portion 40a may be connected to each other by a first gear portion 61 to be described later. The first wing portion 40a and the second wing portion 40a may move in a manner in which the first link portion 40c coupled by the first gear portion 61 is bent. The part where the first wing part 40a and the second wing part 40a are combined is the part where the first middle part 30b of the upper air guide 30 and the first outlet part 30c are connected and the lower air guide ( It may be positioned on a line connecting a portion where the second middle portion 30b' of 30' and the second outlet portion 30c' are connected.

The lower Coanda wing 40' may include a second link part 40c' to which the third wing part 40a' and the fourth wing part 40b' are connected. One end of the third wing 40a' may be coupled to the lower end of the side wall of the duct housing 10, and one end of the third wing 40b' may be coupled to the lower end of the opposite side wall of the duct housing 10. The other end of the third wing 40a' and the other end of the fourth wing 40a' may be connected to each other by a first gear 61 to be described later. The third wing portion 40a' and the fourth wing portion 40a' may move in a manner in which a portion coupled by the first gear portion 61 is bent. The part where the third wing part 40a' and the fourth wing part 40a' are combined is the part where the first middle part 30b of the upper air guide 30 and the first outlet part 30c are connected and the part where the lower air guide 30 is connected. It may be positioned on a line connecting a portion where the second middle portion 30b' and the second outlet portion 30c' of the guide 30' are connected.

The wind direction control unit 50 may include a knob 50a and up and down wind direction control wings 50b.

The knob 50a is a control unit for the user to change the wind direction and open and close the discharge port. The knob 50a may be disposed on one side of the air outlet.

The upper and lower wind direction control wings 50b are coupled to the knob 50a and are defined by the first inlet 30a of the upper air guide 30 and the second inlet 30a' of the lower air guide 30'. The direction of the air flowing into the air inlet can be adjusted. When the knob 50a is pressed downward, the ends of the up and down wind direction control wings 50b move upward, so that the air introduced into the air inlet can be discharged upward through the air outlet. Conversely, when the knob 50a is raised upward, the end of the up and down wind direction control wing 50b moves downward, so that the air introduced into the air inlet can be discharged downward through the air outlet.

The driving unit 60 may include a first gear unit 61 , a second gear unit 62 , a third gear unit 63 , a fourth gear unit 64 , and a fifth gear unit 65 .

The first gear unit 61 may be disposed to be movable up and down inside the side wall of the duct housing 10 . The first gear part 61 has a first coupling part coupled to the first link part 40c of the upper Coanda wing 40 at a first position on the upper side, and a lower Coanda wing at a second position on the lower side. (40') may include a second coupling portion coupled to the second link portion (40c'). The first gear part 61 may further include a linear gear formed between the first coupling part and the second coupling part.

The second gear unit 62 may be rotatably coupled to the inside of the side wall of the duct housing 10 . The second gear unit 62 may include a gear coupled to the gear of the first gear unit 61 . The second gear unit 62 may be formed as a circular gear unit.

The third gear unit 63 may be rotatably coupled to the outside of the sidewall of the duct housing 10 . The third gear unit 63 may be disposed to face the second gear unit 62 with the side wall of the duct housing 10 interposed therebetween. The second gear unit 62 and the third gear unit 63 may be coaxially connected. The third gear unit 63 may be formed as a circular gear unit.

The fourth gear unit 64 may be rotatably coupled to the outside of the sidewall of the duct housing 10 at a lower position than the third gear unit 63 . The fourth gear unit 64 and the knob 50a may be coaxially connected. The fourth gear unit 64 may be disposed such that a rotation shaft connected to the knob 50a is eccentric. The fourth gear unit 64 may be formed as a circular gear unit.

The fifth gear unit 65 may be rotatably coupled to the outside of the sidewall of the duct housing 10 . The fifth gear unit 65 includes a gear that meshes with the gear of the second gear unit 62 and the gear of the fourth gear unit 64 between the second gear unit 62 and the fourth gear unit 64. can do. The fifth gear unit 65 may be formed as a circular gear unit.

According to the configuration of the wind direction controller 50 described above, when the knob 50a is operated by a user's manipulation, rotational force is transmitted to the shaft connected to the knob 50a, and the fourth gear unit 64 is driven by the rotational force. ), the fifth gear unit 65, the third gear unit 64, and the second gear unit 62 rotate in that order. Since the first gear unit 61 is composed of a linear gear, the rotational force transmitted to the first gear unit 61 is converted into a linear motion by the first gear unit 61, and thus, in the operating direction of the knob 50a. Accordingly, the first gear unit 61 moves in the vertical direction. In addition, in a state in which the ends of the first and second wing portions 40a and 40b of the upper Coanda wing 40 are fixed to both side walls of the duct housing, the first link portion 40c is connected to the first gear portion 61 Since it is coupled to, the upper Coanda wing 40 has a folding structure as a whole.

The ends of the third and fourth wing portions 40a' and 40b' of the lower Coanda wing 40' are also fixed to both side walls of the duct housing, and the second link portion 40c' is the first gear portion ( 61), the lower Coanda wing 40' also has an overall bending structure to have the same shape as the upper Coanda wing 40.

By the bent structure of the upper Coanda wing 40 and the lower Coanda wing 40', the air inlet through which air is introduced, the air outlet through which air is discharged, and the air passage through which air flows between the air inlet and the air outlet are The area may remain the same.

Therefore, according to an embodiment of the present invention, the wind passage (flow path) between the front end (air inlet) and the rear end (outlet) of the air vent duct formed by the upper Coanda wing 40 and the lower Coanda wing 40' ), it is possible to obtain the effect of controlling the wind direction while minimizing the decrease in the total air volume.

In addition, the air flowing along the surface of the upper Coanda wing 40 or the lower Coanda wing 40' generates an effect (Coanda effect) that pulls the air flowing along the center of the flow path, so that the overall wind flow You can get the effect of inducing it to be more biased towards the lower part.

In addition, due to the triangular dome-shaped structures of the upper Coanda wing 40 and the lower Coanda wing 40', when viewed based on the same vertical wind direction control wing 50b and the operating angle of the knob 50a, the vertical wind direction Since the width of the front and back length of the control wing (50b) can be designed to be longer, not only can the effect of stably changing the direction of the wind be obtained, but also in the case of the up and down wind direction control wing (50b) having the same front and rear width Even in this case, it is possible to secure a design space capable of manipulating a larger vertical operating angle.

In addition, when it is necessary to tune the angle of the up and down wind direction to control the wind direction of each of the four air vent devices normally disposed on the front of the cockpit module, the design of the entire gear unit for controlling the up and down wind direction control wings 50b may be different. It is not necessary to adjust the length ratio of the top and bottom of the point where the second gear part 62, which is a circular gear, and the first gear part 61, which is a linear gear meet, to make the upward wind direction more advantageous or the downward wind direction more advantageous. this becomes possible Therefore, it is possible to obtain the effect of cost reduction by reducing the need for different molds.

Next, the operation of the air vent device for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 3A to 3C .

3A to 3C are side views illustrating an air flow state according to a knob manipulation position of an air vent device for a vehicle according to an embodiment of the present invention.

3a shows the air flow when the knob 50a of the wind direction control unit 50 is raised upward and the ends of the up and down wind direction control wings 50b are moved downward so that air is discharged to the upper part of the outlet of the air vent device. is a drawing showing

Referring to FIG. 3A , the air inlet of the air vent device, the passage in the middle region, and the air outlet have the same width as h. Accordingly, the air volume reduction effect caused by the manipulation of the wind direction control unit 50 can be minimized.

In addition, the Coanda effect of the air discharged upward can be obtained by the bent structure of the first wing part 40a and the second wing part 40b of the upper Coanda wing 40.

Figure 3b is the air in the case where the air is discharged to the front of the discharge port of the air vent device by positioning the knob 50a of the wind direction control unit 50 horizontally at an intermediate position so that the upper and lower wind direction control wings 50b are kept horizontally It is a diagram showing the flow.

Referring to FIG. 3B , the air inlet of the air vent device, the passage in the middle region, and the air outlet have the same width as h. Accordingly, the air volume reduction effect caused by the manipulation of the wind direction control unit 50 can be minimized.

3C shows the air flow when the air is discharged to the lower part of the outlet of the air vent device by pressing the knob 50a of the wind direction controller 50 downward to move the ends of the up and down wind direction control wings 50b upward. It is an illustrated drawing.

Referring to FIG. 3C , the air inlet of the air vent device, the passage in the middle region, and the air outlet have the same width as h. Accordingly, the air volume reduction effect caused by the manipulation of the wind direction control unit 50 can be minimized.

In addition, the Coanda effect of the air discharged to the lower portion can be obtained by the bent structure of the third wing portion 40a' and the fourth wing portion 40b' of the lower Coanda wing 40'.

Hereinafter, air flow according to a conventional air vent device for a vehicle and an air vent device for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5 .

4 is a side view showing air flow comparison between an air vent device for a vehicle according to an embodiment of the present invention and an air vent device for a conventional vehicle according to an embodiment of the present invention, and FIGS. This is a diagram showing the Coanda effect according to the air vent device for a vehicle according to the present invention.

4 and 5, since the conventional air vent device for a vehicle protrudes into a passage that is an air flow path, the Coanda wing disposed in the duct housing has a small vertical angle for the rise of the Coanda effect, and adjusts the vertical wind direction The length of the wing is short, and the width of the air flow is also small. In contrast, in the air vent device for a vehicle, the width of the passage, which is the air flow path, and the height of the air inlet and the air outlet are the same due to the Coanda wing.

Therefore, according to the air vent device for a vehicle according to an embodiment of the present invention, the vertical angle for the increase of the Coanda effect is large, and the width of the air flow can be maintained while the length of the vertical wind direction control wing is lengthened, as shown in FIGS. 5A and 5A. As shown in FIG. 5b, when the air is discharged upward, it is possible to obtain an effect of increasing the air by about 10 mm (d1) compared to the prior art, and when discharging the air downward by about 120 mm (d2) compared to the prior art.

The above description is merely an example of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: duct housing 11: air inlet
30, 30': air guide 30a: first inlet
30b: first outlet part 30c: first middle part
30a': second inlet 30b': second outlet
30c': second middle part 40, 40': Coanda wing
40a: first wing 40b: second wing
40c: first link portion 40a': third wing portion
40b': 4th wing part 40c': 2nd link part
50: wind direction control unit 50a: knob
50b: up and down wind direction control wing 60: driving unit
61: first gear unit 62: second gear unit
63: third gear unit 64: fourth gear unit
65: fifth gear unit

Claims (26)

duct housing;
a pair of Coanda wings accommodated in the duct housing and forming a flow path through which air flows;
a wind direction controller disposed between the pair of Coanda wings in the duct housing to control the direction of air; and
A driving unit for controlling the Coanda wing according to the control of the wind direction controller,
The cross-sectional area of the inlet and outlet of the flow path formed by the Coanda wing and the intermediate portion between the inlet and the outlet are the same.
According to claim 1,
The duct housing includes an air inlet communicating with the inlet of the passage, an air outlet communicating with the outlet of the passage, and a hollow between the inlet and the outlet,
A cross-sectional area of at least a portion of the hollow part is larger than the cross-sectional areas of the inlet and the outlet.
According to claim 2,
Each of the pair of Coanda wings has a folding structure.
According to claim 3,
The pair of Coanda wings,
a first Coanda wing disposed above the hollow part of the duct housing; and
An air vent device for a vehicle comprising a second Coanda wing disposed below the hollow part of the duct housing.
According to claim 4,
The first Coanda wing,
a first wing portion disposed adjacent to the air inlet of the duct housing;
a second wing portion disposed adjacent to the air outlet of the duct housing; and
An air vent device for a vehicle comprising a first link portion rotatably connecting the first wing portion and the second wing portion.
According to claim 5,
The second Coanda wing,
a third wing portion disposed adjacent to the air inlet of the duct housing;
a fourth wing portion disposed adjacent to the air outlet of the duct housing; and
An air vent device for a vehicle comprising a second link part rotatably connecting the third wing part and the fourth wing part.
According to claim 6,
a first air guide disposed between the upper surface of the duct housing and the first Coanda wing in the hollow portion of the duct housing; and
The air vent device for a vehicle further comprising a second air guide disposed between the lower surface of the duct housing and the second Coanda wing in the hollow portion of the duct housing. According to claim 7,
The first air guide,
a first inlet coupled to an upper surface of the inlet of the duct housing;
a first outlet coupled to an upper surface of the discharge port of the duct housing; and
A first intermediate portion between the first inlet and the first outlet,
The first outlet part and the first middle part are inclined so that a first connection part connected to the first outlet part and the first middle part protrudes to a higher position than the first inlet part.
According to claim 8,
The second air guide includes a second inlet coupled to the lower surface of the inlet of the duct housing, a second outlet coupled to the lower surface of the outlet of the duct housing, and a second air guide between the second inlet and the second outlet. including the middle
The second outlet part and the second middle part are inclined so that a second connection part connected to the second outlet part and the second middle part protrudes to a position lower than the second inlet part.
According to claim 9,
The first link part and the second link part are positioned on a line connecting the first connection part and the second connection part.
According to claim 6,
The wind direction controller,
knob; and
And a wind direction control wing coupled to the knob to control the flow of air discharged through the outlet in the vertical direction,
The wind direction control wing extends to a position further inside the first link in the hollow part.
According to claim 11,
The wind direction control wing extends to a position further inside the second link in the hollow part.
According to claim 11,
the driving unit,
a linear gear unit coupled to the first link and the second link to vertically move the first link and the second link; and
A circular gear portion connected to the linear gear portion and the knob to transmit a rotational force applied to the knob to the linear gear portion,
The linear gear unit converts the rotational force into a linear air vent device for a vehicle.
According to claim 13,
The linear gear part,
a first coupling part coupled to the first link at an upper side of the hollow part; and
An air vent device for a vehicle including a second coupling portion coupled to the second link at a lower side of the hollow portion
According to claim 14,
The circular gear part,
a first gear unit rotatably coupled to the inside of the sidewall of the duct housing and having a gear engaged with a gear of the linear gear unit;
a second gear part rotatably coupled to the outside of the sidewall of the duct housing and rotating by the same axis as the first gear part;
a third gear portion rotatably coupled to an outer side of the sidewall of the duct housing and having a gear engaged with a gear of the second gear portion; and
An air vent device for a vehicle comprising a fourth gear rotatably coupled to an outer side of a sidewall of the duct housing, having a gear engaged with a gear of the third gear unit, and coaxially connected to the knob.
a duct housing including an air inlet, an air outlet, and a hollow between the air inlet and the outlet;
a pair of Coanda wings accommodated in the duct housing and forming a flow path through which air flows;
a wind direction controller disposed between the pair of Coanda wings in the duct housing to control the direction of air; and
A driving unit for controlling the Coanda wing according to the control of the wind direction controller,
A cross-sectional area of at least a portion of the hollow part is larger than the cross-sectional areas of the air inlet and the air outlet.
According to claim 16,
The cross-sectional area of the inlet and outlet of the flow path formed by the Coanda wing and the intermediate portion between the inlet and the outlet are the same.
According to claim 17,
The pair of Coanda wings,
a first Coanda wing disposed above the hollow part of the duct housing; and
An air vent device for a vehicle comprising a second Coanda wing disposed below the hollow part of the duct housing.
According to claim 18,
The first and second Coanda wings each have first and second bent parts that are bent when air is discharged upward and downward,
The air vent device for a vehicle wherein the first and second bent parts are convex upward when air is discharged upward, and the first and second bent parts are deformed into downward convex shapes when air is discharged downward.
According to claim 19,
a first air guide disposed between the upper surface of the duct housing and the first Coanda wing in the hollow portion of the duct housing, and disposed at a position higher than the air inlet and the air outlet of the duct housing; and
A second air guide disposed between the lower surface of the duct housing and the second Coanda wing in the hollow portion of the duct housing and disposed at a position lower than the air inlet and the air outlet of the duct housing For a vehicle further comprising air vent device.
According to any one of claims 20,
When air is discharged upward, a space formed by the first Coanda wing and the first air guide is larger than a space formed by the second Coanda wing and the second air guide.
According to any one of claims 20,
When air is discharged downward, a space formed by the first Coanda wing and the first air guide is smaller than a space formed by the second Coanda wing and the second air guide.
According to claim 6,
The wind direction controller,
knob; and
And a wind direction control wing coupled to the knob to control the flow of air discharged through the outlet in the vertical direction,
The wind direction control wing extends to a position further inside the hollow portion than the first and second bent portions. According to claim 23,
the driving unit,
a linear gear unit coupled to the first and second bent parts to move the first and second bent parts in a vertical direction; and
A circular gear portion connected to the linear gear portion and the knob to transmit a rotational force applied to the knob to the linear gear portion,
The linear gear unit converts the rotational force into a linear air vent device for a vehicle.
According to claim 24,
The linear gear part,
a first coupling portion coupled to the first bent portion at an upper side of the hollow portion; and
An air vent device for a vehicle including a second coupling part coupled to the second bent part at the lower side of the hollow part.
According to claim 25,
The circular gear part,
a first gear unit rotatably coupled to the inside of the sidewall of the duct housing and having a gear engaged with a gear of the linear gear unit;
a second gear part rotatably coupled to the outside of the sidewall of the duct housing and rotating by the same axis as the first gear part;
a third gear portion rotatably coupled to an outer side of the sidewall of the duct housing and having a gear engaged with a gear of the second gear portion; and
An air vent device for a vehicle comprising a fourth gear rotatably coupled to an outer side of a sidewall of the duct housing, having a gear engaged with a gear of the third gear unit, and coaxially connected to the knob.

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