KR20200124474A - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning device for a vehicle. According to an embodiment of the present invention, the air conditioning device for a vehicle comprises: an air conditioning case in which a passage through which air can move is formed; a door for adjusting the opening degree of the passage; and a driving part for rotating the door, wherein a discharge structure for removing foreign matters can be provided in a cam-arm coupling structure. Accordingly, the air conditioning device for a vehicle can prevent the accumulation of foreign matters by having an inclined surface provided as a structure for discharging foreign matters on each of a cam and an arm.

Description

Vehicle air conditioning system {AIR CONDITIONER FOR VEHICLE}

The embodiment relates to an air conditioner for a vehicle. In detail, the present invention relates to an air conditioning apparatus for a vehicle including a cam for driving a door for adjusting an opening degree of an air passage inside an air conditioning case and a structure for preventing foreign matter from accumulating on the arm.

Automobiles are equipped with an air conditioning system to control the air temperature in the room. The air conditioner generates warmth in winter to keep the interior of the vehicle warm, and generates cold air in summer to keep the interior of the vehicle cool. Here, the vehicle air conditioner may include a compressor, a condenser, a receiver dryer, an expansion valve, an evaporator, and a pipe connecting the same to circulate the refrigerant.

In addition, the vehicle air conditioner may selectively pass external air introduced into the vehicle interior by a blower unit through an evaporator through which refrigerant flows or a heater core through which coolant of the vehicle engine flows to exchange heat. . In addition, the heat-exchanged air may be distributed in various directions of the vehicle interior as cold or warm air through vents in communication with each part of the vehicle interior. Accordingly, the vehicle air conditioner can cool or heat the interior of the vehicle.

Here, the vehicle air conditioner may include a door that adjusts the air volume and direction of air introduced through the blower unit to be discharged to the vents of each portion, and an air conditioning case in which the door is disposed. In this case, the evaporator may be disposed inside the air conditioning case to exchange heat.

That is, in an air conditioning case formed to supply air whose temperature is adjusted to the interior of the vehicle, a door for adjusting the opening of the passage through which the air moves may be disposed. In addition, the door may adjust the amount of air movement while being rotated by a cam, an arm, and a lever disposed in the air conditioning case.

Here, in the case of the coupling structure of the cam and the lever and the coupling structure of the lever and the arm, the grooves and the protrusions may be used for mutual coupling, and a lubricating member such as grease is applied to the groove to facilitate movement of the protrusions. To be able to guide you.

However, the lubricating member causes foreign matter to be deposited in the groove. In particular, the foreign matter may be deposited on the end side of the groove. Accordingly, when the cam is rotated, a problem occurs in that the cam, the lever, or the arm cannot rotate at the maximum rotation angle due to the foreign material, causing a problem in adjusting the opening degree of the door. In addition, such a problem of adjusting the opening degree reduces the efficiency of the vehicle air conditioner.

The embodiment provides an air conditioning apparatus for a vehicle having a discharge structure in which foreign matters are removed from a combination structure of a cam and an arm.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems that are not mentioned herein will be clearly understood by those skilled in the art from the following description.

An air conditioning case in which a passage through which air can move is formed; A vehicle air conditioning apparatus comprising a door for adjusting an opening of the passage and a driving unit for rotating the door, wherein the driving unit includes a cam provided with a guide unit; And an arm including a protrusion inserted into the guide part, wherein the guide part is achieved by an air conditioning apparatus for a vehicle including a discharge structure formed to discharge foreign substances.

Here, the arm includes a first arm coupled to the guide portion of the cam, and a second arm coupled to the first arm, wherein the first arm includes a first protrusion disposed on the guide portion of the cam and the first arm. 2 It may include a second protrusion disposed on the guide portion of the arm, and the guide portion of the second arm may include a discharge structure formed to discharge foreign substances.

In addition, the guide portion of the cam is provided as a groove formed concavely in the cam body to have a predetermined length, the groove includes a first inclined surface provided as the discharge structure, and the first inclined surface is an axis of the first protrusion It may be formed at a first predetermined inclination angle θ1 based on the direction.

In addition, the first arm further includes a third protrusion protruding from an outer circumferential surface of the first protrusion, and the first protrusion reaches a maximum rotation angle position P1 in contact with the first inclined surface by the rotation of the cam. When moving, the end of the third protrusion may remove foreign substances attached to the first inclined surface.

In addition, the third protrusion is formed in a spiral shape on the outer circumferential surface of the first protrusion, and the first protrusion moves along the groove by the rotation of the first arm around the first coupling portion of the first arm. While doing it, it can rotate in the said groove.

Meanwhile, the cam may further include an auxiliary hole formed in the cam body to communicate with the groove.

In addition, the first protrusion may be disposed in the groove to be spaced apart from the bottom surface of the groove by a predetermined gap G.

On the other hand, the guide portion of the second arm is provided as a hole formed to have a predetermined length in the second body of the second arm, the hole includes a second inclined surface provided as the discharge structure, and the second inclined surface is the It may be formed at a second predetermined inclination angle θ3 based on the axial direction of the second protrusion.

Here, the first arm further includes a fourth protrusion protruding from the outer circumferential surface of the second protrusion, and the second protrusion reaches a maximum rotation angle position P2 in contact with the second inclined surface by the rotation of the cam. During movement, the fourth protrusion may remove foreign substances attached to the second inclined surface.

In addition, the fourth protrusion is formed in a spiral shape on the outer circumferential surface of the second protrusion, and the second protrusion moves along the hole by the rotation of the first arm with the first coupling portion of the first arm as an axis. While doing it, you can rotate in the hall.

The air conditioner for a vehicle according to the embodiment may prevent the accumulation of foreign matter by having an inclined surface provided as a structure for discharging foreign matter on each of the cam and the arm. In this case, the foreign matter may be discharged to the outside by its own weight by the inclined surface.

In addition, the foreign matter deposited on the inclined surface is induced by colliding with the protrusion of the first arm according to the linear movement of the protrusion of the first arm.

Further, by providing a protrusion additionally formed on the outer circumferential surface of the protrusion to induce cracking of the foreign substance fixed to the inclined surface, it is possible to promote the detachment of the foreign substance.

The various and beneficial advantages and effects of the embodiments are not limited to the above description, and may be more easily understood in the course of describing specific embodiments of the embodiments.

1 is a view showing an air conditioning apparatus for a vehicle according to an embodiment,
2 is a diagram showing an arrangement relationship between a door and a driving unit of the vehicle air conditioner according to the embodiment;
3 is a perspective view showing a driving unit of an air conditioning apparatus for a vehicle according to an embodiment,
4 is an exploded perspective view showing a driving unit of an air conditioning apparatus for a vehicle according to an embodiment,
5 is a front view showing a driving unit of an air conditioning apparatus for a vehicle according to an embodiment,
6 is a cross-sectional view showing the line AA of FIG. 5,
7 is a cross-sectional view taken along line BB of FIG. 5,
8 is a modified example showing the first arm of the vehicle air conditioner according to the embodiment,
9 is another modified example showing the first arm of the vehicle air conditioner according to the embodiment.

The present invention is intended to illustrate and describe specific embodiments in the drawings, as various changes may be made and various embodiments may be provided. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers, such as second and first, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

In the description of the embodiment, in the case where one component is described as being formed in "on or under" of another component, the top (top) or bottom (bottom) (on or under) includes both of the two components being in direct contact with each other or one or more other components being indirectly formed between the two components. In addition, when expressed as'on or under', it may include not only an upward direction but also a downward direction based on one component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, but the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant descriptions thereof will be omitted.

1 is a view showing an air conditioner for a vehicle according to an embodiment, and FIG. 2 is a view showing an arrangement relationship between a door and a driving unit of an air conditioner for a vehicle according to the embodiment.

The vehicle air conditioner 1 according to the embodiment may include a compressor, a condenser, a receiver dryer, an expansion valve, an evaporator, and a pipe connecting the same to circulate a refrigerant to adjust the temperature of the vehicle interior.

1 and 2, the vehicle air conditioner 1 includes an air conditioning case 10 in which a passage through which air can move is formed, a door 20 for adjusting the opening of the passage, and the door 20 It may include a driving unit 30 to rotate.

Further, the driving unit 30 may include a cam 100 and an arm interlocking with the rotation of the cam 100. Here, the arm may include a first arm 200 linked to the rotation of the cam 100 and a second arm 300 linked to the rotation of the first arm 200. Accordingly, the door 20 may adjust the amount of movement of the air while rotating in association with the movement of the cam 100, the first arm 200 and the second arm 300. The first arm 200 may be referred to as a lever, and when the first arm 200 is referred to as a lever, the second arm 300 may be referred to as an arm.

1 and 2, the vehicle air conditioner 1 may include a plurality of doors 20, and some of the plurality of doors 20 are rotated in conjunction with the rotation of the cam 100. It may be disposed on one side of the cam 100. In addition, another part of the plurality of doors 20 may be disposed on one side of the second arm 300 to rotate in association with the rotation of the second arm 300.

Meanwhile, the evaporator (not shown) may be disposed inside the air conditioning case 10 to control the temperature of air flowing into the interior of the vehicle.

3 is a perspective view showing a driving unit of a vehicle air conditioner according to an embodiment, Fig. 4 is an exploded perspective view showing a driving unit of a vehicle air conditioner according to the embodiment, and Fig. 5 is a front view showing a driving unit of the vehicle air conditioner according to the embodiment 6 is a cross-sectional view taken along line AA of FIG. 5, and FIG. 7 is a cross-sectional view taken along line BB of FIG. 5.

3 to 7, the driving unit 30 includes a cam 100 that rotates at a predetermined angle with respect to the center C, and a first arm 200 that rotates in conjunction with the rotation of the cam 100. ) And a second arm 300 that rotates in conjunction with the rotation of the first arm 200. Here, the center C may be a rotation center of the cam 100.

The cam 100 may include a cam body 110 and a guide portion formed on the cam body 110. Here, the guide portion formed on the cam body 110 may be referred to as a first guide portion.

The cam body 110 may be disposed outside the air conditioning case 10 so as to be rotatable with respect to the center C. In addition, the cam body 110 and the first guide portion may form the outer shape of the cam 100.

The first guide part is coupled to one side of the first arm 200 and may guide the rotation of the first arm 200 by rotation of the cam body 110.

In addition, one side of the door 20 may be coupled to the first guide part. Accordingly, as the amount of rotation of the cam body 110 is adjusted, the first guide part enables the amount of rotation of the door 20 to be adjusted. Here, a plurality of the first guide units may be formed on the cam body 110 in consideration of the number of doors 20 and coupling with the first arm 200.

Meanwhile, the first guide part may guide one side of the first arm 200 to be moved within a range of a maximum rotation angle for rotation of the cam 100. Accordingly, the first arm 200 may rotate and interlock within the range of the maximum rotation angle.

Referring to FIG. 4, the first guide portion may be provided as a groove 120 formed in a nonlinear shape to have a predetermined length concave in the cam body 110. Here, the groove 120 may be disposed on a predetermined radius with respect to the center C. In addition, the first protrusion 220 of the first arm 200 may be disposed in the groove 120 to be movable. Accordingly, since the maximum amount of movement of the first protrusion 220 may be limited by the length of the groove 120, the first protrusion 220 is rotated by the cam 100 ), it moves within the range of the maximum rotation angle.

Accordingly, when the cam 100 rotates, the first arm 200 and the second arm 300 may rotate in connection with this. For example, by the movement of the first protrusion 220, the first arm 200 may rotate in conjunction within the maximum rotation angle.

However, a lubricating member such as grease may be applied to the groove 120. In addition, foreign substances may be deposited in the groove 120 by the lubricating member. Accordingly, when the cam 100 rotates, the first arm 200 may not rotate at the maximum rotation angle due to foreign matter deposited in the groove 120.

Accordingly, a discharge structure may be formed in the first guide part so that foreign matters may be discharged by their own weight. Here, the discharge structure formed in the first guide portion may be referred to as a first discharge structure.

The first discharge structure, as shown in FIG. 6, may be provided as a first inclined surface 121 formed on one side of the first guide part. That is, the first guide portion may include a first inclined surface 121 formed to have a predetermined first inclination angle θ1. Here, the first inclination angle θ1 may be an acute angle formed by the axis C1 of the first protrusion 220 of the first arm 200 and the first inclined surface 121. Accordingly, the first inclined surface 121 may be formed to have an obtuse inclination angle θ2 with the bottom surface 122 of the groove 120.

Accordingly, the foreign matter having a predetermined mass may be preferentially discharged to the outside by the first inclination angle θ1 of the first inclined surface 121. Nevertheless, even if the foreign material is deposited on the first inclined surface 121, the first protrusion 220 collides with the foreign material and can easily drop the foreign material off the first inclined surface 121. Accordingly, the foreign matter may be guided to the outside and discharged by the first inclined surface 121.

Meanwhile, the first protrusion 220 of the first arm 200 may be disposed in the groove 120 to be spaced apart from the bottom surface 122 of the groove 120 by a predetermined gap G. Accordingly, the gap G minimizes the movement interference caused by the contact between the first protrusion 220 and the bottom surface 122, while the foreign matter deposited on the first inclined surface 121 and the end of the first protrusion 220 It is possible to maximize the effect on the dropping of the foreign matter by colliding. In this case, the end of the first protrusion 220 may be rounded.

That is, the range of the maximum rotational angle position P1 in which the first protrusion 220 of the first arm 200 is in contact with the first inclined surface 121 may be increased by the gap G. Accordingly, the end of the first protrusion 220 may more easily collide with the foreign material attached to the first inclined surface 121 to guide the foreign material to the outside.

In addition, as shown in FIG. 6, the cam body 110 is assisted in the axial direction (projection direction) of the first protrusion 220 of the first arm 200 so that the groove 120 and the outside communicate with each other. Holes 130 may be formed. Accordingly, since the foreign matter can be discharged to the outside without being accumulated in the groove 120 through the auxiliary hole 130, the auxiliary hole 130 is the first inclined surface 121 and the foreign matter It is possible to prevent accumulation in the groove 120.

The first arm 200 includes a first body 210, a first protrusion 220 protruding from the first body 210 toward the cam 100, and the second arm 300 from the first body 210. A second protrusion 230 protruding toward) and a first coupling part 240 coupled to the air conditioning case 10 may be included. Here, the first body 210, the first protrusion 220, the second protrusion 230, and the first coupling part 240 may be integrally formed. Further, the first protrusion 220 and the second protrusion 230 may be spaced apart and formed on the first body 210.

The first body 210 may be disposed outside the air conditioning case 10 so as to be rotatable with respect to the first coupling part 240. In addition, since the first protrusion 220 is guided by being coupled to the first guide portion of the cam 100, the first body 210 may rotate in association with the rotation of the cam body 110.

The first protrusion 220 is formed to protrude toward the cam 100 from one side of the first body 210, and a part of the first protrusion 220 may be disposed in a groove 120 provided as a guide portion of the cam 100. In this case, the first protrusion 220 may be guided by the first guide portion by the rotation of the cam 100 and may move within the range of the maximum rotation angle.

The second protrusion 230 is formed to protrude toward the second arm 300 from the other side of the first body 210, and a part of the hole 320 provided as the second guide portion of the second arm 300 Can be placed. Here, the second protrusion 230 may be formed to protrude from the other side of the first body 210 in a direction opposite to the protruding direction of the first protrusion 220. In this case, the second protrusion 230 may guide the second guide part by the rotation of the first body 210 to rotate the second arm 300 within the range of the maximum rotation angle.

The first coupling part 240 may be formed on the first body 210 to protrude toward the air conditioning case 10. In this case, the first coupling part 240 may be rotatably disposed in the air conditioning case 10 using a hook structure.

The second arm 300 may rotate in conjunction with the rotation of the first arm 200.

The second arm 300 may include a second body 310 and the second guide portion formed on the second body 310. In addition, the second arm 300 may include a second coupling portion 330 to which one side of the door 20 is coupled so that the door 20 rotates in conjunction with the rotation of the second arm 300. Here, the second guide portion formed on one side of the second arm 300 is coupled to the second protrusion 230 of the first arm 200, and the second coupling portion 330, which is the other side, is coupled to the door 20 Since it is supported and supported, the second arm 300 may rotate in conjunction with the rotation of the first arm 200.

The second body 310 may rotate in conjunction with the rotation of the first arm 200 by using a combination of the second protrusion 230 of the first arm 200 and the second guide part. In this case, the second coupling part 330 may be a reference for rotation of the second body 310.

When the second protrusion 230 of the first arm 200 rotates within the range of the maximum rotation angle for the rotation of the cam 100, the second guide portion is interlocked with the rotation of the second protrusion 230 The second body 310 is rotated.

3 to 5, the second guide portion may be provided as a hole 320 formed in a linear shape so as to have a predetermined length in the second body 310. In this case, the hole 320 may be formed to pass through the second body 310. In addition, a part of the second protrusion 230 may be disposed in the hole 320 to be movable.

Therefore, when the cam 100 rotates, the first arm 200 and the second arm 300 rotate in connection with this, and thus the second arm 300 is rotated by the rotation of the second protrusion 230. ) Can rotate at the maximum rotation angle.

On the other hand, since the maximum movement amount of the second protrusion 230 may be limited by the length of the hole 320, the length of the hole 320 limits the range of the maximum rotation angle of the cam 100 It can also act as a limiting factor.

In addition, a lubricating member such as grease may be applied to the hole 320. In addition, foreign substances may be deposited on the end side of the hole 320 by the lubricating member. Accordingly, when the cam 100 rotates, the second arm 300 may not rotate at the maximum rotation angle due to the foreign material.

Accordingly, a discharge structure may be formed in the second guide part so that foreign substances may be discharged by their own weight. Here, the discharge structure formed in the second guide portion may be referred to as a second discharge structure.

The second discharge structure may be provided as a second inclined surface 321 formed on one side of the second guide part, as shown in FIG. 7. That is, the second guide portion may include a second inclined surface 321 formed at a predetermined second inclined angle θ3. Here, the second inclination angle θ3 may be an acute angle formed by the axis C2 of the second protrusion 230 of the first arm 200 and the second inclined surface 321.

Accordingly, the foreign matter may be discharged to the outside by the second inclined surface 321. Further, even if the foreign material is deposited on the second inclined surface 321, the second protrusion 230 collides with the foreign material, so that the foreign material can be easily removed from the second inclined surface 321. Accordingly, the foreign matter may be guided to the outside by the second inclined surface 321 and discharged.

For example, the second protrusion 230 of the first arm 200 can move to the maximum rotational angle position P2 in contact with the second inclined surface 321, and the foreign matter is preferentially applied to the second inclined surface 321 Even if it is deposited, the foreign material may be discharged to the outside due to the second inclination angle θ3 of the second inclined surface 321 or may collide with the second protrusion 230 and guided to the outside.

The second coupling part 330 may be formed in the shape of a groove or a hole in the second body 310. In addition, one side of the door 20 may be coupled to the second coupling portion 330. Accordingly, when the second arm 300 is rotated, the door 20 is also rotated.

8 is a modified example showing the first arm of the vehicle air conditioning apparatus according to the embodiment, and FIG. 9 is another modified example showing the first arm of the vehicle air conditioning apparatus according to the embodiment.

The first protrusion 220 and the second protrusion 230 of the first arm 200 collide with the foreign material deposited on the inclined surfaces 121 and 321 to eliminate the foreign material. Nevertheless, when the foreign material is fixed to the inclined surfaces 121 and 321, the protrusions 220 and 230 may not move to the maximum rotational angle positions P1 and P2 due to the fixed foreign material.

Accordingly, a modified example of the first arm 200 may induce a crack in a foreign material fixed to the inclined surfaces 121 and 321 by using the protrusions additionally formed on the first protrusion 220 and the second protrusion 230. . Here, a modified example of the first arm 200 may be disposed in place of the first arm 200 described above.

Referring to FIG. 8, the first arm 200a according to the modified example includes a third protrusion 250 protruding from an outer circumferential surface of the first protrusion 220 and a fourth protrusion protruding from an outer circumferential surface of the second protrusion 230 ( 260) may be further included.

As shown in FIG. 8, a plurality of the third protrusions 250 may be spaced apart from each other in the protruding direction of the first protrusion 220 and may be disposed in plural. Further, the fourth protrusion 260 may be spaced apart from each other in the protruding direction of the second protrusion 230 and may be disposed in plurality.

In addition, the third protrusion 250 may be formed on the first protrusion 220 to protrude in the radial direction of the first protrusion 220. In addition, the fourth protrusion 260 may be formed on the second protrusion 230 to protrude in the radial direction of the second protrusion 230. Here, the radial direction may be a direction perpendicular to the axis C1 of the first protrusion 220 or the axis C2 of the second protrusion 230.

When the cam 100 is rotated, the first protrusion 220 may linearly move along the groove 120 to collide with a foreign substance fixed to the groove 120. Accordingly, the third protrusion 250 formed on the first protrusion 220 collides with the foreign material before the first protrusion 220 and induces a crack of the foreign material, thereby promoting the fall of the foreign material. Here, by the rotation of the first arm 200 having the first coupling part 240 as an axis, the first protrusion 220 moves along the groove 120 and relatively rotates in the groove 120. I can. Accordingly, the third protrusion 250 hitting the foreign material while rotating penetrates the foreign material, thereby further promoting cracking of the foreign material. At this time, in the radial direction of the third protrusion 250 so that the first protrusion 220 can move to the maximum rotational angle position P1 where the end of the first protrusion 220 contacts the first inclined surface 121 The height of the protrusion can be adjusted.

In addition, when the first arm 200 is rotated, the second protrusion 230 may linearly move along the hole 320 to rotate the second arm 300. In this case, the second protrusion 230 may collide with the foreign material adhered to the hole 320. Accordingly, the fourth protrusion 260 formed on the second protrusion 230 collides with the foreign material before the second protrusion 230 and induces a crack of the foreign material, thereby promoting the fall of the foreign material. Here, by the rotation of the first arm 200 having the first coupling part 240 as an axis, the second protrusion 230 moves along the hole 320 and relatively rotates in the hole 320. I can. Accordingly, the fourth protrusion 260 hitting the foreign material while rotating penetrates the foreign material, thereby further promoting cracking of the foreign material. At this time, in the radial direction of the fourth protrusion 260 so that the second protrusion 230 can move to the maximum rotational angle position P2 where the second protrusion 230 contacts one side of the second inclined surface 321. The height of the protrusion can be adjusted.

Referring to FIG. 9, the first arm 200b according to another modified example spirally protrudes from the outer circumferential surface of the third protrusion 250a and the second protrusion 230 that helically protrude from the outer circumferential surface of the first protrusion 220 The fourth protrusion 260a may be further included. That is, when comparing FIGS. 8 and 9, the difference from the first arm 200a is that the third protrusion 250a and the fourth protrusion 260a of the first arm 200b are formed in a spiral shape. have.

When the third protrusion 250a and the fourth protrusion 260a are formed in a spiral shape, when the third protrusion 250a and the fourth protrusion 260a penetrate the foreign material through rotation, a load on the foreign material in the axial direction Is applied more. Accordingly, the third protrusion 250a and the fourth protrusion 260a formed in a spiral shape may further promote cracking of the foreign material. Here, the axial direction may be a protruding direction of the first protrusion 220 or the second protrusion 230.

In summary, the vehicle air conditioner 1 installed in the vehicle can prevent the accumulation of foreign substances by using the inclined surfaces 121 and 321 provided as a discharge structure for foreign substances.

In addition, after removing foreign substances deposited on the inclined surfaces 121 and 321 by using the linear movement of the first protrusion 220 and the second protrusion 230 formed on the first arm 200, the inclined surfaces 121 and 321 ) Can be easily discharged.

Further, by using the movement and rotation of the protrusions 250, 250a, 260, and 260a formed on the first arms 200a and 200b, foreign matter deposited on the inclined surfaces 121 and 321 may be promoted to fall off. At this time, since some of the protrusions 250a and 260a may be formed in a spiral shape, foreign matter deposited on the inclined surfaces 121 and 321 may be further promoted to fall off.

Although the above has been described with reference to the embodiments of the present invention, those skilled in the art will variously modify and modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can change it. And, the differences related to such modifications and changes should be construed as being included in the scope of the present invention defined in the appended claims.

1: vehicle air conditioning system 10: air conditioning case
20: door 30: driving unit
100: cap
110: cam body 120: groove
121: first slope
200: first arm
210: first body 220: first protrusion
230: second protrusion
250, 250a: third protrusion
260, 260a: 4th protrusion
300: second arm
310: second body 320: hole
321: second slope

Claims (10)

An air conditioning case in which a passage through which air can move is formed; In the vehicle air conditioning apparatus comprising a door for adjusting the opening degree of the passage and a driving unit for rotating the door,
The driving part
A cam formed with a guide portion; And
It includes an arm including a protrusion inserted into the guide portion,
The air conditioner for a vehicle including a discharge structure formed to discharge foreign substances in the guide part. The method of claim 1,
The arm includes a first arm coupled to the guide portion of the cam, and a second arm coupled to the first arm,
The first arm includes a first protrusion disposed in a guide portion of the cam and a second protrusion disposed in a guide portion of the second arm,
A vehicle air conditioner including a discharge structure formed to discharge foreign substances from the guide portion of the second arm. The method of claim 2,
The guide portion of the cam is provided as a groove concavely formed in the cam body to have a predetermined length,
The groove includes a first inclined surface provided as the discharge structure,
The first inclined surface is formed at a first inclination angle θ1 based on the axial direction of the first protrusion. The method of claim 3,
The first arm further includes a third protrusion protruding from the outer circumferential surface of the first protrusion,
When the first protrusion moves to the maximum rotational angle position (P1) in contact with the first inclined surface by the rotation of the cam, the end of the third protrusion removes foreign substances attached to the first inclined surface. The method of claim 4,
The third protrusion is formed in a spiral shape on the outer peripheral surface of the first protrusion,
The vehicle air conditioner rotates in the groove while the first protrusion moves along the groove by the rotation of the first arm using the first coupling portion of the first arm as an axis. The method of claim 3,
The cam further comprises an auxiliary hole formed in the cam body to communicate with the groove. The method of claim 3,
The first protrusion is disposed in the groove to be spaced apart from the bottom surface of the groove by a predetermined gap (G). The method according to any one of claims 2 to 6,
The guide portion of the second arm is provided as a hole formed to have a predetermined length in the second body of the second arm,
The hole includes a second inclined surface provided as the discharge structure,
The second inclined surface is formed with a second inclined angle θ3 based on the axial direction of the second protrusion. The method of claim 8,
The first arm further includes a fourth protrusion protruding from the outer circumferential surface of the second protrusion,
When the second protrusion moves to the maximum rotational angle position P2 contacting the second inclined surface by rotation of the cam, the fourth protrusion removes foreign substances attached to the second inclined surface. The method of claim 9,
The fourth protrusion is formed in a spiral shape on the outer peripheral surface of the second protrusion,
The vehicle air conditioner rotates in the hole while the second protrusion moves along the hole by the rotation of the first arm using the first coupling portion of the first arm as an axis.

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