KR20190102761A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air conditioner for a vehicle, which can effectively prevent misassembly even though a foreign substance inflow prevention means is formed, and further, has an improved structure to easily detect misassembly when the misassembly occurs. The air conditioner for a vehicle comprises: an air conditioning case provided with a heat exchanger; a door provided in the air conditioning case to control an opening of an air flowing path; a plurality of power transmission means connecting the door and a power source to transmit power; a first gear unit formed in a rotating shaft of one power transmission means; a and a second gear unit formed in a rotating shaft of the other one power transmission means, and engaged with the first gear unit. Moreover, gear teeth of at least one of the first gear unit and the second gear unit are formed with a difference size.

Description

Automotive air conditioning unit {AIR CONDITIONER FOR VEHICLE}

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having an improved gear shape to prevent misassembly during assembly between the gear lever and the gear arm.

In general, the vehicle air conditioner is a device for cooling or heating the vehicle interior by heating or cooling the air outside the vehicle into the vehicle interior or circulating air in the vehicle interior. Inside the air conditioning case, an evaporator for cooling and a heater core for heating are provided. The vehicle air conditioner is configured to selectively blow air cooled or heated by an evaporator or a heater core to each part of a vehicle interior using a blowing mode switching door.

1 illustrates a conventional vehicle air conditioner. As shown in FIG. 1, a conventional vehicle air conditioner 1 includes an air conditioner case 10, a blower, an evaporator 2, a heater core 3, and a temperature control door 15.

An air inlet 11 is formed at the inlet side of the air conditioning case 10, and the defrost vent 12a, the face vent 12b, and the floor vent 12c whose openings are controlled by the mode doors 17 and 18, respectively, on the outlet side. 12d) is formed. The blower is connected to the air inlet 11 of the air conditioning case 10 to blow the inside or outside air. The evaporator 2 and the heater core 3 are sequentially provided in the internal air flow path of the air conditioning case 10. The temperature control door 15 is installed between the evaporator 2 and the heater core 3 to adjust the opening degree of the cold air flow passage bypassing the heater core 3 and the warm air flow passage passing through the heater core 3. .

The mode door is composed of a vent door 16 for adjusting the opening degree of the defrost vent 12a and the face vent 12b, and a floor door 18 for adjusting the opening degree of the floor vents 12c and 12d. The temperature control door 15 and the mode doors 17 and 18 are connected to an actuator installed on the outside of the air conditioning case 10 to rotate and adjust the opening degree of the cold and hot air flow paths, or each vent 12a to 12d. Adjust the opening of the flow path to the

On the other hand, Figure 2 is a side view showing a part of a conventional vehicle air conditioner from the outside. Referring to FIG. 2, the vent door 17 and the floor door 18 are arms 21 and 27, levers 22 and 26, and cams 24, which are power transmission means installed outside the air conditioning case 10. The operating angle is controlled by

The rotating shaft of the vent door 17 is rotatably connected to one side of the arm 21, the other side of the arm 21 is rotatably connected to one side of the lever 22, the other side of the lever 22 It is connected to the slot 23 of the cam 24. The rotating shaft of the floor door 18 is rotatably connected to one side of the arm 27, the other side of the arm 27 is rotatably connected to one side of the lever 26, the other side of the lever 26 To the other slot 25 of the cam 24. As the cam 24 is rotated by operation of a controller that is mechanically operated by being connected to a cable, the vent door 17 and the floor door 18 are interlocked with each other.

In the conventional vehicle air conditioner, power transmission means (arms, levers, cams, etc.) are provided outside the air conditioning case, and when foreign substances are introduced, they are caught in the driving portion of the power transmission means, causing malfunction and deteriorating durability. It became. In order to solve this problem, when a cover covering the power transmission means is configured from the outside, it is impossible to check visually when assembling the power transmission means, so that there is a high possibility of misassembly, and even in the case of incorrect assembly This was difficult to distinguish the misassembly.

In order to solve the above problems, the present invention effectively prevents misassembly even when a foreign material inflow preventing means is formed, and even if misassembly is carried out, the air conditioner for the vehicle has an improved gear structure so that misassembly can be easily detected. Provide the device.

An air conditioner for a vehicle according to the present invention includes an air conditioning case having a heat exchanger, a door provided in the air conditioning case to adjust an opening degree of an air flow path, and a plurality of power transmission means for transmitting power by connecting the door and a power source. And a first gear part formed on the rotation shaft of one power transmission means, and a second gear part formed on the rotation shaft of the other power transmission means and engaged with the first gear part. At least one of the second gear parts is formed with different sizes of gear teeth.

In the above description, the first gear part is formed to have different sizes of neighboring teeth, and the gear tooth of the second gear part is formed to correspond to the gear tooth of the first gear part.

In the above, one gear of the first gear portion and the second gear portion is formed with a different thickness in the axial direction.

In the above, another one of the first gear portion and the second gear portion forms a groove in the axial direction to correspond to the gear having the different thickness.

In the above, when the first gear portion and the second gear portion are properly assembled, the gear teeth having different thicknesses are engaged with the opposite side grooves, and the gear teeth having different thicknesses when the first gear portion and the second gear portion are incorrectly assembled are not engaged with the opposite grooves. Incorrect assembly detection is possible.

In the above, the misassembly detecting portion is located in the circumferential direction, which is the assembly direction of the first gear portion and the second gear portion, in the middle.

In the above, a gear tooth having a groove formed in the axial direction has a rib connecting the gears.

In the above, gear teeth having different thicknesses in the axial direction are formed thicker than neighboring gear teeth in the circumferential direction.

In the above, the other one of the first gear portion and the second gear portion is formed with a groove in the axial direction corresponding to the gear having a different thickness, the gear portion forming the groove is the groove in the circumferential direction, the intermediate groove in the axial direction Deeply indented;

In the above, the first gear portion and the second gear portion, the shape of the gear teeth and the gap between the grooves and the teeth of the gear teeth are formed uniformly.

In the above, the power transmission means formed with the first gear portion is composed of a lever, the power transmission means formed with the second gear portion is composed of an arm.

In the above, the power transmission means is provided on the outside of the air conditioning case, and is formed on at least one of the air conditioning case and the power transmission means has a cover to prevent the inflow of foreign matter.

The air conditioner for a vehicle according to the present invention effectively prevents misassembly even when forming a means for preventing foreign substances from being introduced, and can easily detect misassembly even if misassembly occurs. Assembly can be detected.

1 illustrates a conventional vehicle air conditioner,
2 is a side view showing a part of a conventional vehicle air conditioner from the outside,
3 is a cross-sectional view showing a vehicle air conditioner according to an embodiment of the present invention,
4 is a perspective view showing a part of the vehicle air conditioner according to an embodiment of the present invention from the outside,
5 is a perspective view showing a state in which the lever is assembled in Figure 4,
6 is a perspective view of the arm and the lever according to an embodiment of the present invention,
7 is an enlarged perspective view of a portion of FIG. 6;
8 is a side view showing a lever according to an embodiment of the present invention,
9 is a side view showing an arm according to an embodiment of the present invention,
10 illustrates an incorrect assembly state of the arm and the lever according to an embodiment of the present invention.
11 is a view illustrating a state in which an arm and a lever are properly assembled according to an embodiment of the present invention.

Hereinafter, the technical configuration of the vehicle air conditioner according to the accompanying drawings in detail.

3 is a cross-sectional view showing a vehicle air conditioner according to an embodiment of the present invention. As shown in FIG. 3, the vehicle air conditioner 100 according to an embodiment of the present invention includes an air conditioning case 110, a blower, a cooling heat exchanger and a heat exchanger for heating, and a temperature control door 115. It includes a mode door.

An air inlet 111 is formed at the inlet side of the air conditioning case 110, and an air outlet port formed of the defrost vent 112a, the face vent 112b, and the floor vent 112c is formed at the outlet side. In addition, an air flow path is formed inside the air conditioning case 110. The blower is connected to the air inlet 111 and blows the inside or outside air into the air conditioning case 110.

In addition, the cooling heat exchanger and the heating heat exchanger are sequentially provided in the air conditioning case 110. The cooling heat exchanger is composed of an evaporator 102, and the heating heat exchanger is composed of a heater core 103. The door in the air conditioning case 110 adjusts the opening degree of the air flow path.

The temperature control door 115 is installed between the evaporator 102 and the heater core 103 to adjust the opening degree of the cold air flow passage bypassing the heater core 103 and the warm air flow passage passing through the heater core 103. . The mode door is composed of a vent door 117 and a floor door 118. The vent door 117 adjusts the opening degree of the defrost vent 112a and the face vent 112b, and the floor door 118 adjusts the opening degree of the floor vent 112c.

Figure 4 is a perspective view showing a part of the vehicle air conditioner according to an embodiment of the present invention from the outside, Figure 5 is a perspective view showing the assembled state of the lever in Figure 4, Figure 6 is an embodiment of the present invention Is a perspective view of an arm and a lever according to the present invention.

4 to 6, the vehicle air conditioner according to an embodiment of the present invention includes a plurality of power transmission means. Power transmission means is provided on the outside of the air conditioning case 110, and functions to connect the door and the power source to transmit power. The door may be a temperature control door 115 or a mode door. The power source may consist of an actuator. In this embodiment, one power transmission means is composed of a lever 300, the other power transmission means is composed of an arm (200).

The lever 300 has a first gear part 320. The first gear part 320 is formed on the outer circumferential surface of the rotation shaft 310 of the lever 300. The rotary shaft 310 protrudes toward the outer surface of the air conditioning case 110 from one surface of the lever 300 facing the air conditioning case 110. The rotary shaft 310 is formed with a rotary hole 301 for rotatably inserting the rotary shaft portion 130 formed in the air conditioning case 110.

The arm 200 has a second gear 230. The second gear part 230 is formed on the outer circumferential surface of the rotation shaft 220 of the arm 200. The second gear part 230 is engaged with the first gear part 320 of the lever 300 so that the arm 200 and the lever 300 are connected to each other. The arm 200 is rotatably provided on the outer surface of the air conditioning case 110. The door connecting shaft 210 extends toward the air conditioning case 110 on the rotation shaft 220 of the arm 200. Coupling portion 211 is formed on the outer circumferential surface of the door connecting shaft 210 is coupled to the rotating shaft of the door.

The lever 300 is connected to a separate cam or directly connected to the actuator is driven to rotate. When the lever 300 receives the rotational power from the power source, the lever 300 is rotated about the rotation shaft 130 of the air conditioning case 110. As the lever 300 rotates, the arm 200 engaged with the lever 300 is rotated about the door connecting shaft 210. The door coupled to the door connecting shaft 210 is rotated together with the arm 200. Arm 200 is integrally rotated together outside the air conditioning case 110, the door inside the air conditioning case (110).

The cover 140 is protruded from the outer surface of the air conditioning case 110. Cover 140 is formed in at least one of the air conditioning case 110 and the power transmission means, in the present embodiment is formed in the air conditioning case 110. The cover 140 may be formed integrally with the lever 300 which is the power transmission means. The cover 140 extends to surround the sides of the lever 300 and the arm 200 to prevent the inflow of foreign matter. When the lever 300 is assembled to the air conditioning case 110 as shown in FIG. 5, the gear drive of the lever 300 and the arm 200 is completely enclosed by the cover 140, and the gear drive of the lever 300 and the arm 200. This prevents foreign substances from entering.

7 is an enlarged perspective view of a portion of FIG. 6, FIG. 8 is a side view illustrating a lever according to an embodiment of the present invention, and FIG. 9 is a side view illustrating an arm according to an embodiment of the present invention.

7 to 9, at least one of the first gear part 320 of the lever 300 and the second gear part 230 of the arm 200 is formed in different sizes. That is, the first gear part 320 of the lever 300 is formed with different sizes of neighboring gear teeth. In addition, the gear of the second gear unit 230 of the arm 200 is formed to correspond to the gear of the first gear unit 320.

More specifically, one gear of the first gear portion 320 of the lever 300 and the second gear portion 230 of the arm 200 is formed to have a different thickness in the axial direction. In this case, the other one of the first gear unit 320 and the second gear unit 230 forms a groove in the axial direction corresponding to the gear having a different thickness.

When the first gear part 320 and the second gear part 230 are correctly assembled, the gear teeth having different thicknesses mesh with opposite grooves. In addition, when the first gear unit 320 and the second gear unit 230 are misassembled, misalignment detection is possible because the gear teeth having different thicknesses do not mesh with the opposite side grooves. In the above, the misassembly detection unit is located in the middle in the circumferential direction, which is the assembly direction of the first gear unit 320 and the second gear unit 230.

In the above, a gear tooth having a groove formed in the axial direction has a rib connecting the gears. In addition, gear teeth of different thickness in the axial direction are formed thicker than neighboring gear teeth in the circumferential direction. In the above, the gear portion in which the groove is formed is recessed deepest in the axial direction in the middle groove in the circumferential direction. On the other hand, the first gear portion 320 and the second gear portion 230 is formed in the shape of the gear teeth and the gap between the grooves and the teeth of the gear teeth is formed uniformly.

Referring to the drawings, the configuration of the first gear unit 320 and the second gear unit 230 according to an embodiment of the present invention will be described in more detail.

The first gear part 320 formed on the outer circumferential surface of the rotation shaft 310 of the lever 300 is composed of a plurality of gear teeth, the first gear teeth 321, the second gear teeth 322, the first in the circumferential direction It consists of three gear teeth 323. Non-driven gear teeth 325 and 326 are formed at the front of the first gear teeth 321 and the rear of the third gear teeth 323 in the circumferential direction, respectively.

The first gear teeth 321, the second gear teeth 322, and the third gear teeth 323 all have the same shape, and the spacing between the peaks and the grooves are formed to be the same, and thus the overall gear teeth have a uniform shape. . At least one axial thickness of the first gear tooth 321, the second gear tooth 322, and the third gear tooth 323 is formed differently.

That is, the thickness t2 of the second gear teeth 322 is greater than the thickness t3 of the first gear teeth 321 and the thickness t1 of the third gear teeth 323. The thickness t3 of the first gear tooth 321 and the thickness t1 of the third gear tooth 323 may be the same as or different from each other. If the number of gear teeth increases to three or more, the thickness of the gear teeth intermediate in the circumferential direction is formed the largest. In this case, the second gear tooth 322 intermediate in the circumferential direction functions as an incorrect assembly detection unit.

In this way, the middle gear in the circumferential direction has the largest thickness, so as to assemble the lever and the arm at the time of misassembly, even if the gear is rotated in both the clockwise and counterclockwise directions, the rotation is not achieved. can do. On the other hand, when the misassembly detection unit is disposed at the start position in the assembling direction, that is, when the thickness of the first gear tooth 321 is formed to be the largest, the rotation is performed only in one of clockwise and counterclockwise directions. As a result, misassembly can be detected only when the motor rotates in one direction instead of in both directions. In addition, even when the misassembly detecting unit is disposed at the end position in the assembling direction, that is, even when the thickness of the third gear tooth 323 is formed to be the largest, the rotation cannot be performed only in one of the clockwise and counterclockwise directions. Therefore, it is possible to detect the misassembly only when rotating in one direction and not in both directions.

The second gear part 230 formed on the outer circumferential surface of the rotation shaft 220 of the arm 200 is composed of a plurality of gear teeth 236. A plurality of grooves are formed between the gear teeth 236 of the arm 200 to engage with the gears of the lever 300. The first gear teeth 321 and the second gear teeth 322 of the lever 300 are formed. , The first groove 231, the second groove 232, and the third groove 233 in the order of engagement with the third gear tooth 323.

The gear teeth 236 of the arm 200 all have the same shape, and the spacing of the peaks and the grooves are formed to be the same so that the gear teeth 236 have an overall uniform shape. In addition, the gear teeth 236 of the arm 200 are all equal in axial thickness. The first groove 231, the second groove 232, and the third groove 233 are the first gear teeth 321, the second gear teeth 322, and the third gear teeth 323 of the lever 300. One axial depth is formed differently to correspond to.

That is, the depth w2 of the second groove 232 is formed deeper than the depth w1 of the first groove 231 and the depth w3 of the third groove 233. The depth w1 of the first groove 231 and the depth w3 of the third groove 233 may be the same as or different from each other. If the number of grooves increases to three or more, the depth of the grooves intermediate in the circumferential direction is formed the largest. In this case, the second groove 232 intermediate in the circumferential direction functions as a misassembly detection unit together with the second gear teeth 322 of the lever 300.

The grooves formed in the arm 200 may be configured through a plurality of ribs connecting the gear teeth 236 across in a horizontal direction, that is, in a vertical direction in the axial direction. That is, the first groove 231 is formed through the first rib 241, the second groove 232 is formed through the second rib 242, and the third groove () is formed through the third rib 243. 233) is formed. These grooves are recessed in the axial direction on one side facing the lever 300, the bottom surface of which is defined by the ribs. As a result, the depth of the groove can be adjusted by adjusting the formation position of the rib. In addition, the ribs themselves have a reinforcing function of the gear portion.

10 is a view illustrating an incorrect assembly state of an arm and a lever according to an exemplary embodiment of the present invention. Referring to FIG. 10, when misassembly occurs between the lever 300 and the arm 200, the gears of the lever 300, which are shown as dashed lines, do not mesh with the grooves of the arm 200 and are clockwise and counterclockwise in both directions. All of them are not driven, and it is easy to detect whether they are misassembled.

11 is a view illustrating a state in which an arm and a lever are properly assembled according to an embodiment of the present invention. Referring to FIG. 11, when proper assembly occurs between the lever 300 and the arm 200, the gears of the lever 300, which are shown as dotted lines, are engaged with the grooves of the arm 200, and thus the rotational force of the lever 300 is increased by the arm. 200 is received to rotate the door.

So far, the vehicle air conditioner according to the present invention has been described with reference to the embodiment shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope should be defined by the technical spirit of the appended claims.

100: vehicle air conditioner
102: evaporator 103: heater core
110: air conditioning case 111: air inlet
115: temperature control door 117: vent door
118: floor door 130: rotary shaft portion
140: cover 200: arm
210: door connecting shaft 220: rotating shaft
230: second gear portion 300: lever
310: rotation shaft 320: first gear portion

Claims (12)

A vehicle including an air conditioning case 110 having a heat exchanger, a door provided in the air conditioning case 110 to adjust an opening degree of an air flow path, and a plurality of power transmission means for connecting power to the door and a power source. In the air conditioning apparatus,
A first gear portion formed on the rotation shaft of one power transmission means, and a second gear portion formed on the rotation shaft of the other power transmission means and engaged with the first gear portion,
At least one of the first gear portion and the second gear portion is a vehicle air conditioner having a gear tooth is formed in a different size. According to claim 1,
The first gear unit has a neighboring gear teeth are formed in a different size, the gear gear of the second gear unit is a vehicle air conditioner is formed to correspond to the gears of the first gear unit. The method according to claim 1 or 2,
The gear of one of the first gear portion and the second gear portion is a vehicle air conditioning apparatus is formed in a different thickness in the axial direction. The method of claim 3, wherein
The other one of the first gear portion and the second gear portion is a vehicle air conditioner having a groove in the axial direction corresponding to the gear having a different thickness. The method of claim 4, wherein
When the first gear portion and the second gear portion are correctly assembled, gear teeth having different thicknesses are engaged with the opposite grooves,
When the first gear portion and the second gear portion are misassembled, the vehicle air conditioner is capable of detecting misassembly because the gear teeth having different thicknesses do not mesh with the grooves on the opposite side. The method of claim 5,
And the misassembly detecting unit is located halfway between the first gear unit and the second gear unit in a circumferential direction. The method of claim 4, wherein
And a gear tooth having a groove formed in the axial direction, the gear having a rib connecting the gears. The method of claim 3, wherein
And a gear tooth having a different thickness in the axial direction, wherein an intermediate gear tooth is formed thicker than a neighboring gear tooth in the circumferential direction. The method of claim 8,
The other one of the first gear portion and the second gear portion is formed with a groove in the axial direction corresponding to the gear having a different thickness,
The gear unit forming the groove is a vehicle air conditioner formed in the groove in the circumferential direction the deepest groove in the axial direction. The method of claim 3, wherein
The first gear portion and the second gear portion, the vehicle air conditioner is formed in the shape of the gear teeth and the gap between the grooves and the teeth of the gear teeth. The method according to claim 1 or 2,
The power transmission means formed with the first gear portion is composed of a lever (300), the power transmission means formed with the second gear portion is a vehicle air conditioning apparatus is composed of an arm (200). The method according to claim 1 or 2,
The power transmission means is provided on the outside of the air conditioning case 110,
The air conditioning case 110 is formed on at least one of the power transmission means and the vehicle air conditioner having a cover 140 to prevent the inflow of foreign matter.

Images