JP5353823B2 - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner that prevents a mistake in assembling when a plurality of doors lining in a driving shaft direction is assembled to a case and so on. <P>SOLUTION: An air-conditioning unit 20 includes: a protrusion 271 for positioning which is installed on a partition plate 27 so as to extend toward an outer peripheral surface of a first driving shaft part 241A; a first shaft part 243 for positioning which is installed on the first driving shaft part 241A so that the protrusion 271 for positioning extending from the partition plate 27 faces to an outer peripheral surface thereof when air-mix doors 24A and 24B and the partition plate 27 are attached on a regular position; and a second shaft part 244 for positioning which has a larger outer diameter than the first shaft part 243 for positioning and is installed on a second driving shaft part 241B so that the protrusion 271 for positioning collides with an outer peripheral surface thereof when the air-mix doors 24A and 24B are attached to an air-conditioning case 21 on an opposite position which is not the regular position and the partition plate 27 is attached. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to an air conditioner that is arranged so as to cross an air passage through which conditioned air flows and that can open and close the air passage, and the door is mounted at a predetermined position, particularly for a vehicle. It is suitable for use in an air conditioner.

  In the conventional air conditioner, a plurality of doors arranged in the direction of the rotation axis are properly installed at predetermined positions in the air conditioning case, thereby opening and closing predetermined air passages to perform their respective functions. As such a conventional technique, an air conditioner described in Patent Document 1 is known.

  The conventional air conditioner includes a first air mix door including a first rotation drive shaft integrated with the first door portion and the first door portion, and a second rotation drive integrated with the second door portion and the second door portion. A device that arranges a second air mix door having a shaft side by side in the rotational axis direction, and each door opens and closes a predetermined air passage. A first fitting hole having a circular cross section extending inward is formed on one end side of the first rotation drive shaft, and a first fitting shaft main body having a circular cross section protruding outward is formed on the other end side. ing. A second fitting hole having a circular cross section extending inward is formed on one end side of the second rotation drive shaft, and a second fitting shaft main body having a circular cross section protruding outward is formed on the other end side. ing.

  When the first air mix door and the second air mix door are assembled at predetermined positions with respect to the air conditioning case, the respective parts are in the following states. That is, the first fitting shaft main body is inserted into the second fitting hole when the first door portion and the second door portion are assembled, and the circuit provided on the partition plate that divides the air passage to the left and right. It is rotatably supported by the moving support part. When the first door portion and the second door portion are each installed at a predetermined position and properly assembled, the shaft portion of the driving lever for driving the door can be inserted from the outside into the first fitting hole. The second fitting shaft main body projects outside from a hole formed in the air conditioning case.

JP 2007-152982 A

  However, in the prior art described in Patent Document 1, the first door portion has the same outer diameter as the first rotational drive shaft of the first door portion and the second rotational drive shaft of the second door portion. And the second door part may be attached to the air conditioning case in the opposite direction. As described above, if the first door part and the second door part are mistakenly assembled at a non-regular position, when the drive lever is attached, the drive lever cannot be properly attached, and the productivity of the air conditioner is reduced. There is a problem of lowering.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioner capable of preventing erroneous assembly when a plurality of doors arranged in the drive shaft direction are assembled to a case or the like.

  In order to achieve the above object, the following technical means are adopted. That is, the invention according to claim 1 is an air conditioning case (21) in which an air passage through which air flows is formed, a plate formed integrally with the air conditioning case, or a separate part from the air conditioning case. A partition plate (27) that divides the air passage in the air conditioning case into a first compartment passage (26A) and a second compartment passage (26B), and the first compartment passage provided in the first compartment passage. A first door (24A) that opens and closes, a first drive shaft portion (241A) that is attached to the air conditioning case and drives the first door, and a second door that is provided in the second partition passage and opens and closes the second partition passage (24B), a second drive shaft portion (241B) which is attached to the air conditioning case so as to be coaxial with the first drive shaft portion and drives the second door, and extends toward the outer peripheral surface of the first drive shaft portion. Positioning protrusions (2 1) When the first door and the second door are each attached to the air conditioning case at a regular position and the partition plate is attached to the regular position, the positioning protrusions that extend from the partition plate face the outer peripheral surface. The first positioning shaft portion (243) provided on the first drive shaft portion, the first door and the second door are attached to the air conditioning case at opposite positions and the partition plate is at the proper position. A second positioning shaft provided on the second drive shaft portion having an outer diameter larger than that of the first positioning shaft portion so that the positioning projection collides with the outer peripheral surface when attached. Part (244).

  According to this invention, when the partitioning plate is provided with the positioning protrusions extending toward the outer peripheral surface of the first drive shaft portion, each of the first door and the second door is attached to the air conditioning case at a proper position. When the partition plate is attached to the regular position, the positioning projection is positioned so as to face the first positioning shaft provided on the first drive shaft. Further, when the first door and the second door are attached to the air conditioning case at opposite positions, if the partition plate is attached to the proper position, the positioning protrusion is more than the first positioning shaft. It will collide with the second positioning shaft portion having a large outer diameter. As a result, when the door is mounted at an irregular position, the partition plate or the air conditioning case including the partition plate cannot be correctly mounted due to the collision between the positioning protrusion and the second positioning shaft portion. Can be easily recognized. Therefore, it is possible to provide an air conditioner capable of preventing erroneous assembly when assembling a plurality of doors arranged in the drive shaft direction to a case or the like.

  A second aspect of the present invention is the invention according to the first aspect, wherein the air conditioning case is combined with each other in a direction intersecting the axial direction of the first drive shaft portion when the first door and the second door are attached as described above. A pair of case members (211 and 212) are provided, and at least one of the case members is integrally formed with a partition plate.

  According to this invention, after attaching the first door and the second door to one of the pair of case members, the other case member is combined in the intersecting direction, thereby the first door and the second door. The air conditioning case is installed. In this case, when the other case member is combined, the positioning projection formed integrally with the case member faces the first positioning shaft portion of the first drive shaft portion or the second drive shaft. It is possible to easily determine whether or not it is in a regular assembled state depending on whether it collides with the second positioning shaft portion of the portion. Therefore, when the second door is mistakenly attached at a predetermined position where the first door is attached, the positioning protrusion becomes the second positioning shaft portion of the second drive shaft portion when the other case member is combined. Since the partition plate formed integrally with the other case member is not in a normal assembled state, it can be recognized that an erroneous assembly has occurred.

  According to a third aspect of the present invention, in the first aspect of the invention, the air conditioning case is a pair of cases that are combined with each other in the axial direction of the first drive shaft portion when the first door and the second door are attached as described above. Members (211A, 212A), the partition plate is configured as a separate part from the pair of case members, and the pair of case members is the first drive shaft portion with the first door, the partition plate, and the second door attached. It is characterized by being combined in the axial direction.

  According to this invention, after attaching the first door, the partition plate, and the second door to one of the pair of case members, by combining the other case member in the axial direction, Installation to a two-door air conditioning case is performed. In this case, whether or not the positioning protrusion formed integrally with the partition plate faces the first positioning shaft portion of the first drive shaft portion when the partition plate, which is a separate component from the case member, is combined. It is possible to easily determine whether or not it is in a properly assembled state by colliding with the second positioning shaft portion of the second drive shaft portion. Therefore, when the second door is mistakenly attached at a predetermined position where the first door is attached, the positioning projection collides with the second positioning shaft portion of the second drive shaft portion when the partition plate is combined. Therefore, since the partition plate is not in a normal assembled state, it can be recognized that an erroneous assembly has occurred.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the first drive shaft portion and the second drive shaft portion are shaft portions that are independently driven. The two drive shaft portions are characterized in that portions protruding outward from the air conditioning case are formed to have the same shaft diameter. According to the present invention, in the system in which the first door and the second door are separately driven independently, the first drive shaft portion and the second drive shaft portion have the same shaft diameter at the portions protruding from the air conditioning case to the outside. By being formed, the drive lever connected to drive the first drive shaft portion and the second drive shaft portion can be a common component, not an individual component. For this reason, it is possible to prevent erroneous assembly of the door and to use a common drive lever. Therefore, it is possible to reduce the number of parts and the number of parts management man-hours, thereby providing an air conditioner with excellent productivity.

  In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means of embodiment mentioned later.

1 is a schematic plan view illustrating an internal configuration of a vehicle air conditioner according to a first embodiment to which the present invention is applied. It is typical sectional drawing when it sees from the II direction about FIG. It is a schematic diagram for demonstrating the structure which concerns on an assembly of an air-conditioning case (a partition plate is included), a 1st door, and a 2nd door. It is typical sectional drawing which shows the state before attaching a partition plate with respect to the air-conditioning case, the 1st door, and the 2nd door which were assembled | attached to the regular position. FIG. 5 is a schematic cross-sectional view showing a state in which the partition plate is further assembled and correctly positioned from the state shown in FIG. 4. It is a fragmentary sectional view when the VI-VI cut surface in FIG. 5 is seen in the arrow direction. It is typical sectional drawing which shows the state before attaching a partition plate to the 1st door and 2nd door which were assembled | attached on the reverse position which is not regular with respect to an air-conditioning case. It is typical sectional drawing which showed the state which assembled | attached the partition plate further from the state shown in FIG. It is a fragmentary sectional view when the IX-IX cut surface in FIG. 8 is seen in the arrow direction. In the vehicle air conditioner of 2nd Embodiment, it is a schematic diagram for demonstrating the structure which concerns on an assembly of an air-conditioning case, a 1st door, and a 2nd door.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. In addition to combinations of parts that clearly indicate that each embodiment can be combined specifically, the embodiments may be partially combined even if they are not clearly specified, unless there is a problem with the combination. Is possible.

(First embodiment)
1st Embodiment of the air conditioner to which this invention is applied is described according to FIGS. FIG. 1 is a schematic plan view illustrating the internal configuration of the vehicle air conditioner according to the first embodiment. 2 is a schematic cross-sectional view of FIG. 1 when viewed from the II direction. In FIG. 1, the upper side of the page indicates the front of the vehicle, the lower side indicates the rear of the vehicle, the left direction indicates the left direction of the vehicle, and the right direction indicates the right direction of the vehicle. In FIG. 2, the upper side of the page indicates the vehicle upper direction, the lower side indicates the vehicle lower direction, the left direction indicates the front of the vehicle, and the right direction indicates the rear of the vehicle.

  As shown in FIG. 1, the vehicle air conditioner includes a blower unit 10 and an air conditioning unit 20 that forms an adjustment unit that adjusts the temperature of the blown air blown from the blower unit 10. The ventilation system of this vehicle air conditioner is roughly divided into two parts, a blower unit 10 and an air conditioning unit 20, and the outer shell is covered with a case, respectively. The blower unit 10 is disposed so as to be offset from the center portion to the passenger seat side in the lower portion of the instrument panel in the vehicle interior. On the other hand, the air conditioning unit 20 is disposed at a substantially central portion in the vehicle left-right direction in the lower portion of the instrument panel in the vehicle interior.

  The blower unit 10 includes a blower fan 11 formed of a centrifugal multiblade fan. The blower fan 11 is disposed in a spiral scroll casing 12 and is driven to rotate by an electric motor. The blown air of the blower fan 11 is blown in the direction of the arrow in FIG. 1 along the spiral shape of the scroll casing 12.

  The suction port of the blower fan 11 is provided on the vehicle upper side, and sucks air through the inside / outside air switching box. The inside / outside air switching box has an inside air (vehicle interior air) suction port and an outside air (vehicle interior outside air) suction port, and a switching door that switches between opening and closing these suction ports.

  The air conditioning unit 20 integrally includes both the evaporator 22 and the heater core 23 in a common air conditioning case 21. The air conditioning case 21 is formed of a resin molded product such as polypropylene, for example, and includes a plurality of divided cases having divided surfaces in the vehicle vertical direction of FIG. The plurality of divided cases form an air-conditioning case 21 by housing devices such as the evaporator 22, the heater core 23, and doors, which will be described later, and then integrally joined by fastening means such as metal spring clips and screws.

  The air conditioning unit 20 is arranged in a state shown in FIGS. 1 and 2 in a substantially central portion of the lower portion of the instrument panel in the vehicle compartment with respect to the front and rear, left and right, and up and down directions of the vehicle. An air inlet 25 is disposed in a portion of the air conditioning case 21 closest to the vehicle front side. Air-conditioned air blown from the blower unit 10 flows into the air inlet 25. The air inlet 25 is open to the side surface of the air conditioning case 21 on the passenger seat side in order to connect to the air outlet portion of the scroll casing 12 of the blower unit 10.

  In the air conditioning case 21, an evaporator 22 is disposed immediately after the air inlet 25. The evaporator 22 is arranged in a thin shape in the vehicle front-rear direction so as to cross the passage in the air conditioning case 21. Therefore, the blown air from the air inlet 25 flows into the front surface of the evaporator 22 extending in the vehicle vertical direction. The evaporator 22 absorbs the latent heat of evaporation of the refrigerant in the refrigeration cycle from the conditioned air to cool the conditioned air.

  On the downstream side of the air flow of the evaporator 22 (the vehicle rear side), the heater core 23 is arranged with a predetermined interval. The heater core 23 heats the cold air that has passed through the evaporator 22, hot hot water (for example, engine cooling water) flows through the heater core 23, and heats the air using the hot water as a heat source.

  The air passage in the air conditioning case 21 is formed to extend in the vehicle front-rear direction as shown in FIGS. 1 and 2. The air passage inside the air conditioning case 21 is partitioned into a first partition passage 26A and a second partition passage 26B in the left-right direction of the vehicle by a partition plate 27 as a center plate. The first section passage 26 </ b> A is a passenger seat side air passage and is close to the blower unit 10. The second partition passage 26B is a driver's seat side air passage and is located farther from the blower unit 10 than the first partition passage 26A. The partition plate 27 may be formed integrally with the air conditioning case 21 (for example, the second case member 212) and may be configured as one component, or may be configured as a separate component from the air conditioning case 21 and assembled with the air conditioning case 21. But you can.

  In order to partition the two passages (first partition passage 26A and second partition passage 26B), the partition plate 27 passes from the air downstream side portion of the evaporator 22 to the downstream end portion of the heater core 23 through the periphery of the heater core 23. It is arranged in the vehicle longitudinal direction. The partition plate 27 is formed integrally with the air conditioning case 21 and can be formed integrally with the air conditioning case 21 with a resin, and a notch portion for avoiding interference with the heater core 23 is provided at a portion where the heater core 23 is disposed. Is formed.

  The heater core 23 is disposed so as to cross the first partition passage 26A and the second partition passage 26B. The inside of the heater core 23 is located at the same position as the partition plate 27 by the flat surface of the flat tube or the fin surface of the corrugated fin. The first partition passage 26A and the second partition passage 26B are partitioned.

  In the first compartment passage 26A and the second compartment passage 26B in the air-conditioning case 21, the first cold air bypass passage 28A and the second cold air are provided above the heater core 23, respectively, through which the cold air flows by bypassing the heater core 23. A bypass passage 28B (hereinafter simply referred to as cold air bypass passages 28A and 28B) is formed in the left-right direction.

  Further, in the first partition passage 26A and the second partition passage 26B, the hot air heated by the heater core 23, the first cold air bypass passage 28A, and the second cold air bypass are provided in a portion between the heater core 23 and the evaporator 22. A first air mix door 24A (corresponding to the first door) and a second air mix door 24B (corresponding to the second door) for adjusting the air volume ratio with the cool air that bypasses the heater core 23 through the passage 28B are provided. . The first air mix door 24A opens and closes the first partition passage 26A, and the second air mix door 24B opens and closes the second partition passage 26B.

  The first air mix door 24A and the second air mix door 24B (hereinafter simply referred to as air mix doors 24A, 24B or generically referred to as air mix doors 24) are slid by driving means such as a motor, This is a sliding door that moves toward the cold air bypass passages 28A and 28B and the heater core 23.

  The air mix doors 24A and 24B include a door main body, racks 246A and 246B (door slide gear) provided at the end of the door main body, a first drive shaft portion 241A and a second drive shaft portion 241B (shaft, and hereinafter simply driven). Pinions 242A and 242B (shaft gears) provided on shaft portions 241A and 241B) and rotated by driving means, door guide pins, and the like. The racks 246A and 246B are formed so as to extend in the entire moving direction of the door body, and are configured to mesh with the pinions 242A and 242B. The pinions 242A and 242B are further rotated together with the gear by the rotational driving force of the servo motors 50A and 50B transmitted to the gear provided outward in the axial direction, and this rotational driving force causes the racks 246A and 246B to be orthogonal to the axial direction of the shaft. It is transmitted as a force for moving in the direction of movement, and the door body moves.

  The air mix doors 24 </ b> A and 24 </ b> B adjust the ratio of the amount of warm air that passes through the heater core 23 and the amount of cool air that does not pass through the heater core 23 depending on the slide position. When the air mix doors 24A and 24B are located on one side (heater core 23 side) shown in FIG. 1, it is during maximum cooling, and the first hot air passage 29A and the second hot air passage 29B (hereinafter simply referred to as hot air passage). 29A and 29B) are closed to completely shut off the flow of air to the heater core 23 and provide cooling air to the passenger compartment. Conversely, when the air mix doors 24A, 24B are on the other side (cold air bypass passages 28A, 28B side), it is during maximum heating, and the air that has passed through the evaporator 22 with the cold air bypass passages 28A, 28B closed is removed. All are heated by flowing to the heater core 23 to provide heating air to the passenger compartment.

  Further, when the air mix doors 24A and 24B are in an intermediate position, both the cold air bypass passages 28A and 28B and the hot air passages 29A and 29B are partially opened so that both the cold air and the hot air flow down. The first air mix chamber 30A and the second air mix chamber 30B (hereinafter also simply referred to as air mix chambers 30A and 30B) provided on the downstream side are mixed, and the air outlets opened after the temperature is adjusted Passed and sent into the passenger compartment. The air mix doors 24 </ b> A and 24 </ b> B adjust the air volume ratio of the cold air and the hot air according to the slide position, and adjust the temperature of the air-conditioned air. The slide positions of the air mix doors 24A and 24B are determined by the control device together with the blowing mode of each door that opens and closes each outlet according to the set temperature of the auto air conditioner. In the case of a manual air conditioner, the set temperature and outlet It is determined by the control device according to the mode. Each of the first air mix chamber 30 </ b> A and the second air mix chamber 30 </ b> B partitioned right and left by the partition plate 27 mixes the cold air flowing from the evaporator 22 and the hot air heated by the heater core 23. It ’s a good space. The conditioned air whose temperature is adjusted in this space can be supplied to the passenger compartment at an appropriate air volume ratio by controlling each door that opens and closes each outlet.

  On the downstream side of the heater core 23, a first hot air passage 29 </ b> A on the first partition passage 26 </ b> A side and a second hot air passage 29 </ b> B on the second partition passage 26 </ b> B side are provided by a partition plate 27. Yes. The hot air passages 29A and 29B are formed so as to extend upward from the lower portion of the air conditioning case 21, and have a width dimension over the entire vehicle left-right direction of the air conditioning case 21, and the width dimension is larger than the dimension in the vehicle front-rear direction. Is also getting bigger. That is, the hot air passages 29A and 29B are flat passages that are thin in the front-rear direction, horizontally long, and long in the up-down direction. The hot air passages 29A and 29B are connected to the air mix chambers 30A and 30B in the vicinity of the upper end of the heater core 23, respectively, and merge with the cold air bypass passages 28A and 28B, respectively.

  A first defroster opening 31A and a second defroster opening 31B (hereinafter, referred to as left and right) corresponding to each of the first partition passage 26A and the second partition passage 26B are provided on the vehicle front side of the upper portion of the air conditioning case 21. The defroster openings 31A and 31B may be referred to simply as openings). These defroster openings 31A and 31B are supplied with temperature-controlled air from the air mix chambers 30A and 30B, respectively, and are connected to a defroster outlet in the vehicle compartment via a defroster duct. Wind is blown out from the exit toward the inner surface of the front window glass of the vehicle.

  The defroster openings 31A and 31B are opened and closed by a first defroster door 32A and a second defroster door 32B (hereinafter simply referred to as defroster doors 32A and 32B or generically referred to as defroster door 32), respectively. A first rotation drive shaft 321A and a second rotation drive shaft 321B (hereinafter also simply referred to as rotation drive shafts 321A and 321B) are integrally coupled to the first defroster door 32A and the second defroster door 32B, respectively. The rotational drive shafts 321A and 321B are provided in the air conditioning case 21 so as to be aligned on the same straight line along the vehicle left-right direction, like the defroster doors 32A and 32B. One ends of the rotation drive shafts 321 </ b> A and 321 </ b> B are rotatably supported via a rotation support portion provided on the partition plate 27. Further, the other ends of the rotary drive shafts 321A and 321B are connected to and driven by an actuator mechanism for switching a blowing mode such as a servo motor via a drive lever and a link mechanism.

  As described above, the first defroster door 32A and the second defroster door 32B are rotated by the first rotation driving shaft 321A and the second rotation driving shaft 321B by driving means such as a servo motor, respectively, so that the defroster opening 31A is obtained. , 31B is a one-side pivot type revolving door that opens and closes. When the defroster doors 32A and 32B are operated to the position of the one-dot chain line shown in FIG. 2, the defroster openings 31A and 31B are fully opened and the first communication port 44A and the second communication port 44B are closed. The first communication port 44A and the second communication port 44B are formed in the first partition passage 26A and the second partition passage 26B, respectively, for flowing air from the air mix chambers 30A and 30B to the face opening and the foot opening. It becomes a passage.

  Further, a plurality of sets (in the present embodiment, a total of 10 sets of 5 sets) of left and right face openings 33A to 37A, 33B to 37B are provided in a portion on the vehicle rear side in the upper part of the air conditioning case 21. Of these face openings, the center-side face openings 33A, 33B, 36A, and 36B are connected to the first communication port 44A and the second communication port 44B by the temperature-controlled air from the air mix chambers 30A and 30B. Flows in through.

  Left and right center face ducts are connected to the left and right center face openings 33A and 33B, respectively, and through these ducts, the center face outlets in the vehicle compartment disposed on the upper side of the center part in the left and right direction of the instrument panel The wind is blown out from the outlet toward the passenger head in the center of the passenger compartment. Left and right side face ducts are connected to the left and right side face openings 34A, 34B, 35A, and 35B arranged on both sides of the center face openings 33A and 33B in the left and right direction of the vehicle, respectively. The left and right side face outlets open toward the passenger compartment at the left and right ends of the passenger panel, and the wind blows out from the outlet toward the passenger head side or the vehicle side window glass on the left and right sides of the passenger compartment. . The side face outlet is equipped with a manually operated wind direction changing device, and by adjusting the direction of the wind direction plate of this wind direction changing device, it is directed toward the passenger head side or vehicle side window glass on the left and right sides of the vehicle interior. It is possible to blow out the wind.

  Since the left and right side face openings 34A, 34B, 35A, 35B are in direct communication with the air mix chambers 30A, 30B, the defroster doors 32A, 32B, the first foot face switching door 40A, and the second foot face switching. Regardless of the operation position of the door 40B (hereinafter also simply referred to as the foot face switching doors 40A and 40B), the air from the air mix chambers 30A and 30B can always be blown out in the full blowing mode.

  Also, the left and right rear face openings 36A and 36B disposed in the center portion of the left and right center face openings 33A and 33B are arranged on the left and right auxiliary rear face openings through a duct outside the air conditioning case 21. It communicates with 37A and 37B. The openings 37A and 37B are connected to rear face passages 38A and 38B provided in the air conditioning case 21. A rear face duct is connected to the opening ends of the rear face passages 38A and 38B, and wind is blown out from a rear face outlet formed at the front end of the duct toward the head of the passenger in the rear seat. Further, in the air conditioning case 21, left and right foot air inlet portions 39A and 39B are opened in the first partition passage 26A and the second partition passage 26B, respectively, at positions on the vehicle rear side of the air mix chambers 30A and 30B. Yes.

  The left and right foot air inlet portions 39A and 39B are provided to face the center face openings 33A and 33B and the rear face openings 36A and 36B, respectively, and are provided in the first partition passage 26A and the second partition passage 26B, respectively. The foot face switching doors 40A and 40B are opened and closed.

  The first foot face switching door 40A and the second foot face switching door 40B, which are one-side pivoting type rotary doors, respectively include a first rotation drive shaft 401A and a second rotation drive shaft 401B (hereinafter simply referred to as a rotation drive shaft). 401A and 401B) are integrally coupled. The rotary drive shafts 401A and 401B are provided in the air conditioning case 21 so as to be aligned on the same straight line along the left and right direction of the vehicle, like the foot face switching doors 40A and 40B.

  One ends of the rotation drive shafts 401A and 401B are rotatably supported via a rotation support portion provided on the partition plate 27. The other ends of the rotary drive shafts 401A and 401B are connected to and driven by a blower mode switching actuator mechanism such as a servomotor via a drive lever and a link mechanism. Further, when the foot face switching doors 40A and 40B are operated to the position of the one-dot chain line shown in FIG. 2, the center side face openings 33A, 33B, 36A and 36B are fully opened and the left and right foot air inlets 39A, 39B is closed.

  The air from the foot air inlets 39A and 39B flows to the front seat foot openings 41A and 41B, and is further blown out to the feet of the front seat passengers through the front seat foot duct and the front seat outlet in the passenger compartment. . Part of the air from the foot air inlets 39A and 39B flows through the rear seat foot passages 42A and 42B to the rear seat foot openings 43A and 43B, from which the rear seat foot duct and the vehicle It is blown out to the passenger's feet in the rear seat through the rear rear seat outlet.

  The defroster doors 32A and 32B and the foot face switching doors 40A and 40B are doors for blowing mode switching, and are arranged in the two left and right first partition passages 26A and second partition passages 26B, and are provided with a first rotation drive shaft. A blowout mode in which air-conditioned air whose temperature is adjusted in the air mix chambers 30A and 30B is blown into the vehicle interior by rotating the 321A and 401A and the second rotary drive shafts 321B and 401B either independently or integrally and simultaneously. Can be operated by either left-right independent drive or left-right integrated drive.

  Next, a positioning structure for attaching the first door and the second door arranged in the drive axis direction to a regular position with respect to the air conditioning case 21 will be described with reference to FIGS. FIG. 3 is a schematic diagram that simplifies the assembly relationship of the air mix doors 24A and 24B, the partition plate 27, and the air conditioning case 21 according to the present embodiment. A portion of the air conditioning case 21 where the door is installed is a combination of a pair of case members (a first case member 211 and a second case member 212). Both case members are not formed with a hole through which the drive shaft portion of the door passes, and the drive shaft portion of the door is rotatably supported by combining a pair of case members.

  As shown in FIG. 3, the order of assembling each of the above components in the air conditioning unit 20 is as follows. First, the door member in which the left and right drive shaft portions 241A and 241B and the left and right air mix doors 24A and 24B are assembled together is an air conditioning case 21. Are assembled to the first case member 211. At this time, the central portion (first positioning shaft portion 243 and second positioning shaft portion 244) to which the left and right drive shaft portions 241A and 241B are connected, and both end portions (the shaft portion 601 in the driving lever 60). The connecting shaft portions 245A and 245B) connectable to each other are rotatably supported by the rotation support portions 211a and 211b formed on the first case member 211 of the air conditioning case 21.

  Further, the connecting shaft portions 245A and 245B are connected to a driving lever 60 connected to an actuator mechanism including servo motors 50A and 50B. The drive shaft portions 241A and 241B are driven by a drive lever 60 that receives drive force from the actuator mechanism. A link mechanism may be connected between the drive lever 60 and the actuator mechanism.

  Next, the second case member 212 is assembled to the assembly of the first case member 211 and the door member so as to sandwich the door member with the first case member 211. Since the partition plate 27 is provided integrally with the second case member 212, when the second case member 212 is assembled to the first case member 211, the second case member 212 becomes the first case. Together with the member 211, the center portion and the both end portions of the drive shaft portions 241A and 241B are rotatably supported.

  Further, at this time, the central portions of the drive shaft portions 241A and 241B are rotatably supported by the rotation support portion 211b and the rotation support portion 272 formed on the partition plate 27. The positioning protrusion 271 provided on the partition plate 27 so as to extend toward the outer peripheral surface of the first drive shaft portion 241A is the outer periphery of the first positioning shaft portion 243 provided on the first drive shaft portion 241A. Arrange to face the surface. This positioning protrusion 271 is the first when the left and right drive shaft parts 241A and 241B, that is, the left and right air mix doors 24A and 24B are attached to the air conditioning case 21 at a position that is not normal, that is, the opposite position. The first positioning shaft portion 243 is set so as not to face the outer peripheral surface of the first positioning shaft portion 243 so as to collide with the outer peripheral surface of the second positioning shaft portion 244 having a larger outer diameter than the first positioning shaft portion 243. It is a rib that protrudes toward the first drive shaft portion 241A with a long length.

  The positioning projection 271 is made of, for example, polypropylene (PP) together with the partition plate 27, and the drive shaft portions 241A and 241B are made of polybutylene terephthalate (PBT) that is harder than the positioning projection 271. .

  The second positioning shaft portion 244 is provided on the second drive shaft portion 241B so as to be coaxial with the first positioning shaft portion 243. That is, the first positioning shaft portion 243 is provided on the first drive shaft portion 241A side and the first drive shaft portion 241B side is provided at the center portion where the left and right drive shaft portions 241A and 241B are connected. A second positioning shaft portion 244 is provided so as to protrude outward from the drive shaft portion 241A.

  Further, the regular positioning structure including the detailed configuration of each part will be described in detail with reference to FIGS. FIG. 4 is a schematic cross-sectional view showing a state before the partition plate 27 is assembled to the air conditioning case 21 and the air mix doors 24A and 24B assembled at regular positions. FIG. 5 is a schematic cross-sectional view showing a state in which the partition plate 27 is further assembled from the state shown in FIG. 4 in the direction intersecting the axial direction of the first drive shaft portion 241A and correctly positioned. FIG. 6 is a partial cross-sectional view of the VI-VI cut surface in FIG.

  As shown in FIG. 4, in the normal positioning state, the first air mix door 24A and the first drive shaft portion 241A are arranged on the left side of the sheet of FIG. 4, and the second air mix door 24B and the second drive shaft portion 241B are Arranged on the right side of FIG. Further, as shown in FIG. 5, in the normal positioning state, the rotation support portion 272 formed on the partition plate 27 is positioned so as to rotatably support the second positioning shaft portion 244, and the positioning protrusion 271 is positioned so as to face the outer peripheral surface of the first positioning shaft portion 243 with a gap. For this reason, the first positioning shaft portion 243 extends toward the first drive shaft portion 241A in the normal position from the rotation support portion 272, and is closer to the first drive shaft portion 241A than the rotation support portion 272. It has a long shape.

  The positioning projection 271 is a rib whose cross-sectional shape branches outward from the surface of the partition plate 27 and extends in an L shape, and the tip side portion has a shape that extends along a predetermined length in the axial direction of the drive shaft portion. Also have. The partition plate 27 is branched on the drive shaft side, and one of the branch plates 27 is a positioning projection 271, and the other that is not branched extends as a rotation support portion 272.

  In this regular positioning state, the locking claw portion 211a1 provided on the rotation support portion 211a of the first case member 211 is provided on the second case member 212 as shown in FIGS. The second case member 212 is disposed at a predetermined position with respect to the first case member 211 so as to be engaged with the engaging piece portion 212a to lock the engaging piece portion 212a. become.

  As shown in FIGS. 4 and 5, the second positioning shaft portion 244 is fitted to the outside of the first positioning shaft portion 243 at the central portion where the left and right drive shaft portions 241 </ b> A and 241 </ b> B are connected. It is the fitting connection part of the both shaft parts which are. This fitting state is such that when the first drive shaft portion 241A and the second drive shaft portion 241B are rotationally driven independently, the first drive shaft portion 241A and the second drive shaft portion are engaged with each other. When 241B is rotationally driven integrally, it fits so that it may rotate integrally by a rotation prevention mechanism.

  The first drive shaft portion 241A and the second drive shaft portion 241B have the same shaft diameter. In the present embodiment, the first positioning shaft portion 243 has the same shaft diameter as the first driving shaft portion 241A and the second driving shaft portion 241B, and the second positioning shaft portion 244 is the first driving shaft portion 241A. The shaft diameter is larger than that of the second drive shaft portion 241B.

  The connecting shaft portion 245A located at the end of the first drive shaft portion 241A is a shaft portion that protrudes to the outside of the air conditioning case 21, and a shaft portion 601 of a drive lever for rotationally driving the first drive shaft portion 241A. Connected to. The shaft portion 601 of the drive lever is formed with a fitting hole, and is connected so that the connection shaft portion 245A is fitted into the hole. That is, the shaft portion 601 of the drive lever is on the female side, and the connecting shaft portion 245A is on the male side.

  Similarly, the connecting shaft portion 245B located at the end of the second drive shaft portion 241B is a shaft portion that protrudes outside the air conditioning case 21, and in the case of being driven to rotate independently of the first drive shaft portion 241A. The second drive shaft portion 241B is connected to the shaft portion 601 of the drive lever for rotationally driving. The shaft portion 601 of the drive lever is formed with a fitting hole, and is connected so that the connection shaft portion 245B is fitted into the hole. Also in this case, the shaft portion 601 of the drive lever is on the female side, and the connecting shaft portion 245B is on the male side.

  Next, the case where the air mix doors 24A and 24B are assembled at non-regular positions will be described in detail with reference to FIGS. FIG. 7 is a schematic cross-sectional view showing a state before the partition plate 27 is assembled in a state where the air mix doors 24 </ b> A and 24 </ b> B are assembled to the air conditioning case 21 at positions that are not regular. FIG. 8 is a schematic cross-sectional view showing a state in which the partition plate 27 is further assembled in the direction intersecting the axial direction of the first drive shaft portion 241A and the like from the state shown in FIG. FIG. 9 is a partial cross-sectional view of the section IX-IX in FIG. 8 as viewed in the direction of the arrow.

  As shown in FIG. 7, in the assembled state where the doors are not in the opposite positions, the first air mix door 24 </ b> A and the first drive shaft portion 241 </ b> A are arranged on the right side of FIG. 4, and the second air mix door 24 </ b> B The two drive shaft portions 241B are arranged on the left side of the sheet of FIG. Further, as shown in FIG. 8, in the reverse assembly state that is not normal, the positioning projection 271 strikes and interferes with the outer peripheral surface of the second positioning shaft 244, and the rotation support portion 272 of the partition plate 27 The second positioning shaft portion 244 is positioned away from the second positioning shaft portion 244. In this non-regular reverse assembly state, the locking claw portion 211a1 provided on the rotation support portion 211a is engaged with the engagement piece portion 212a of the second case member 212 as shown in FIGS. Can not do it. Therefore, as shown in FIGS. 8 and 9, the second case member 212 in which the partition plate 27 is integrally formed is separated from the second drive shaft portion 241B and floats. In such a state, it is easy to recognize that the left and right doors are assembled at opposite positions in the assembling process, and therefore, erroneous assembly can be easily recognized.

  The effect which the air conditioner of this embodiment brings is described. In the air conditioning unit 20, the positioning projection 271 provided on the partition plate 27 so as to extend toward the outer peripheral surface of the first drive shaft portion 241A, the air mix doors 24A and 24B, and the partition plate 27 are attached at regular positions. In this case, the first positioning shaft portion 243 provided on the first drive shaft portion 241A and the air mix doors 24A and 24B are provided with an air conditioning case so that the positioning projection 271 extending from the partition plate 27 faces the outer peripheral surface. 21 has a larger outer diameter than the first positioning shaft portion 243 so that the positioning projection 271 collides with the outer peripheral surface when the partition plate 27 is mounted at a non-regular position. And a second positioning shaft portion 244 provided on the second drive shaft portion 241B.

  According to this configuration, each of the first air mix door 24A and the second air mix door 24B is provided with the positioning projection 271 that extends toward the outer peripheral surface of the first drive shaft portion 241A on the partition plate 27. When the partition plate 27 is attached to the regular position by attaching the first case member 211 when attached to the regular case member 211, the positioning projection 271 is provided on the first drive shaft portion 241A. The first positioning shaft portion 243 is positioned so as to face the first positioning shaft portion 243.

  Further, when the first air mix door 24A and the second air mix door 24B are attached to the first case member 211 at opposite positions that are not normal, the first case member 211 is attached so that the partition plate 27 is When attached to the position, the positioning projection 271 collides with a second positioning shaft portion 244 formed with a larger outer diameter than the first positioning shaft portion 243. As a result, when each door is attached to an irregular position, the second case member 212 including the partition plate 27 cannot be correctly mounted due to the collision between the positioning projection 271 and the second positioning shaft 244. In this case, it can be easily recognized that an erroneous assembly has occurred. Thus, an air conditioner capable of preventing erroneous assembly when the left and right doors are assembled is obtained.

  In addition, the air conditioning case 21 includes a pair of case members (a first member that is combined with each other in a direction intersecting the axial direction of the first drive shaft portion 241A when the first air mix door 24A and the second air mix door 24B are attached). A case member 211 and a second case member 212). Furthermore, a partition plate 27 is formed integrally with at least one of the case members (in the second embodiment, the second case member 212).

  According to this, after attaching the first air mix door 24A and the second air mix door 24B to the first case member 211 of the pair of case members, the axial direction of the first drive shaft portion 241A, etc. By combining the other second case member 212 in the direction intersecting with, the first air mix door 24A and the second air mix door 24B are attached to the air conditioning case 21. In this case, at the stage where the other second case member 212 is combined, the positioning protrusion 271 formed integrally with the second case member 212 is the first positioning shaft portion of the first drive shaft portion 241A. It is possible to easily determine whether or not it is in a properly assembled state depending on whether it faces 243 or collides with the second positioning shaft portion 244 of the second drive shaft portion 241B. Therefore, when the second air mix door 24B is mistakenly attached to a predetermined position where the first air mix door 24A is attached, the positioning projection 271 is second when the other second case member 212 is combined. Since it collides with the second positioning shaft portion 244 of the drive shaft portion 241B, the partition plate 27 formed integrally with the other second case member 212 is not in a normal assembled state. Thereby, it can be easily recognized that an erroneous assembly has occurred.

  The first drive shaft portion 241A and the second drive shaft portion 241B are shaft portions that are independently driven. In the first drive shaft portion 241A and the second drive shaft portion 241B, portions (a connection shaft portion 245A and a connection shaft portion 245B) protruding outside from the air conditioning case 21 are formed to have the same shaft diameter. According to such a structure, in the system which drives the 1st air mix door 24A and the 2nd air mix door 24B separately and independently, the 1st drive shaft part 241A and the 2nd drive shaft part 241B are the part which protrudes concerned Are formed to have the same shaft diameter, the drive lever 60 connected to drive the first drive shaft portion 241A and the second drive shaft portion 241B can be a common component instead of a separate component. become. For this reason, in addition to preventing the wrong assembly of the door, the use of the common drive lever 60 can reduce the number of parts and the number of parts management man-hours, and an air conditioner excellent in productivity can be obtained.

  Further, in the first drive shaft portion 241A and the second drive shaft portion 241B, the connecting shaft portion 245A and the connecting shaft portion 245B which are the protruding portions are on the male side, and the shaft portion 601 of the driving lever is on the female side, and is fitted. When the drive lever 60 is assembled by a robot by being connected by mating, etc., the robot can easily adjust the orientation of the connecting shaft portion 245B and the connecting shaft portion 245B, so an air conditioner suitable for robot assembly is provided. it can.

(Second Embodiment)
In the second embodiment, another configuration relating to the assembly of the air conditioning case, the first door, and the second door will be described with reference to FIG. The present embodiment has the same effects as the first embodiment with respect to prevention of incorrect assembly of the door. FIG. 10 illustrates a configuration relating to the assembly of the air conditioning case (the first case member 211A on the left side and the second case member 212A on the right side), the first air mix door 54A and the second air mix door 54B in the second embodiment. It is the schematic diagram simplified in order to do.

  In the configuration according to the assembly of the second embodiment, the first case member 211A and the second case where the air conditioning case of the part related to the assembly of the door is combined in the left-right direction (the axial direction of the first drive shaft portion 541A, etc.). It consists of a case member 212A, and is further characterized in that the first door and the second door are assembled separately rather than simultaneously.

  As shown in FIG. 10, the order of assembling the air conditioning case, the first door, and the second door is as follows. First, the first air mix door 54A having the left first drive shaft portion 541A is arranged on the left side in the air conditioning case. 1 case member 211A.

  Next, the partition plate 27, which is a separate component from the case member, is assembled to the assembly of the first case member 211 </ b> A and the first air mix door 54 </ b> A. In this assembling stage, the positioning projection 271 of the partition plate 27 plays a role of positioning with respect to the drive shaft, so that it is possible to know whether or not it is an improper assembly.

  When the door is assembled at a regular position, the end of the first drive shaft portion 541A on the second drive shaft portion 541B side is rotatably supported by a rotation support portion 272 formed on the partition plate 27, The positioning protrusion 271 is disposed so as to face the outer peripheral surface of the first positioning shaft portion 543 provided on the first drive shaft portion 541A. The positioning protrusion 271 is the first when the left and right drive shaft portions 541A and 541B, that is, the left and right air mix doors 54A and 54B are attached to the air conditioning case 21 at a position that is not normal, that is, the opposite position. Without colliding with the outer peripheral surface of the positioning shaft portion 543, the second positioning shaft portion 544 collides with the outer peripheral surface of the second positioning shaft portion 544 having a larger outer diameter than the first positioning shaft portion 543.

  Next, the second air mix door 54B is assembled by fitting and connecting the drive shaft portions to the assembly of the first case member 211A, the first air mix door 54A, and the partition plate 27, and finally the partition plate. 27, the second case member 212A is assembled from the right side so as to sandwich the second air mix door 54B. At this time, a connection shaft portion 545A that can be connected to the shaft portion 601 of the drive lever in the first drive shaft portion 541A, a connection shaft portion 545B that can be connected to the shaft portion 601 of the drive lever in the second drive shaft portion 541B, and The second positioning shaft portion 544 includes a rotation support portion formed on the first case member 211A, a rotation support portion formed on the second case member 212A, and a rotation support portion formed on the partition plate 27, respectively. 272 is rotatably supported.

  According to the present embodiment, the partition plate 27 is configured as a separate part from the air conditioning case (the first case member 211A and the second case member 212A). The air conditioning case includes a first case member 211A as a pair of case members that are combined with each other in the axial direction of the first drive shaft portion 541A when the first air mix door 54A and the second air mix door 54B are attached. And a second case member 212A. Then, the first case member 211A and the second case member 212A are combined in the axial direction of the first drive shaft portion 541A with the first air mix door 54A, the partition plate 27, and the second air mix door 54B attached. It is.

  According to this, after attaching the first air mix door 54A, the partition plate 27, and the second air mix door 54B to one of the pair of case members (first case member 211A), in the axial direction, By combining the other case member (second case member 212A), the air mix doors 54A and 54B are attached to the air conditioning case. In this case, in the stage where the partition plate 27 which is a separate part from each case member is combined, the positioning projection 271 formed integrally with the partition plate 27 is the first positioning shaft of the first drive shaft portion 541A. It is possible to easily determine whether or not the assembled state is normal depending on whether it faces the portion 543 or collides with the second positioning shaft portion 544 of the second drive shaft portion 241B. Therefore, when the second air mix door 54B is mistakenly attached at a predetermined position where the first air mix door 54A is attached, the positioning protrusion 271 is the second positioning shaft portion when the partition plate 27 is combined. Since it collides with 544, the partition plate 27 is not in a normal assembled state. Thereby, it can be easily recognized that an erroneous assembly has occurred.

(Other embodiments)
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In the above embodiment, the air mix doors 24A and 24B have been described in the invention in which the right and left doors can be prevented from being erroneously assembled by the positioning structure between the partition plate 27 and the drive shaft. However, other doors such as defroster doors are described. 32A and 32B and foot face switching doors 40A and 40B can also be applied.

  In the above-described embodiment, the first drive shaft portion 241A is disposed on the vehicle left side (passenger seat side) in the air conditioning case 21 and the second drive shaft portion 241B is disposed on the vehicle right side (driving) in the air conditioning case 21 in a properly mounted state. Although it is a form arranged on the seat side), it is also possible to configure left and right doors with the normal mounting state opposite to this.

  In the above-described embodiment, the air mix doors 24A and 24B include the first partition passage 26A, which is a passage lined up in the left and right directions by the left and right independent operation systems in which the first drive shaft portion 241A and the second drive shaft portion 241B are independently driven. It is a door that opens and closes each second partition passage 26B. However, the present invention is not limited to such a configuration, and the first drive shaft portion 241A and the second drive shaft portion 241B are integrally driven simultaneously to drive the air mix doors 24A and 24B at the same time. It may be a method. In this case, the air mix door 24 in which the first air mix door 24A and the second air mix door 24B are combined has a drive shaft portion 241 in which the first drive shaft portion 241A and the second drive shaft portion 241B are integrated. Is driven to open and close.

  In addition to the air mix doors 24A and 24B, the doors of the integral drive system described above are doors for air outlets such as the defroster doors 32A and 32B, the foot face switching doors 40A and 40B, and the doors for switching the inside and outside air. It can also be applied to.

DESCRIPTION OF SYMBOLS 10 ... Blower unit 20 ... Air conditioning unit 21 ... Air conditioning case 24A ... 1st air mix door (1st door)
24B ... 2nd air mix door (2nd door)
26A ... 1st division passage 26B ... 2nd division passage 27 ... Partition plate 60 ... Drive lever 211, 211A ... 1st case member (a pair of case members)
212, 212A ... Second case member (a pair of case members)
243 ... First positioning shaft 244 ... Second positioning shaft 241A ... First drive shaft 241B ... Second drive shaft 271 ... Positioning projection 601 ... Drive lever shaft

Claims (4)

An air conditioning case (21) in which an air passage through which air flows is formed;
A plate formed integrally with the air conditioning case, or a plate separate from the air conditioning case, wherein the air passage in the air conditioning case is divided into a first compartment passage (26A) and a second compartment passage (26B). A partition plate (27) for partitioning;
A first door (24A) provided in the first partition passage to open and close the first partition passage;
A first drive shaft portion (241A) attached to the air conditioning case to drive the first door;
A second door (24B) provided in the second partition passage to open and close the second partition passage;
A second drive shaft portion (241B) attached to the air conditioning case to be coaxial with the first drive shaft portion and driving the second door;
A positioning protrusion (271) provided on the partition plate so as to extend toward the outer peripheral surface of the first drive shaft portion;
When the first door and the second door are each attached to the air conditioning case at a proper position and the partition plate is attached to a normal position, the positioning protrusions extending from the partition plate are outer peripheral surfaces thereof. A first positioning shaft portion (243) provided on the first drive shaft portion so as to face
When the first door and the second door are attached to the air conditioning case at opposite positions and the partition plate is attached at a proper position, the positioning protrusions collide with the outer peripheral surface. A second positioning shaft portion (244) provided on the second drive shaft portion having an outer diameter dimension larger than that of the first positioning shaft portion;
An air conditioner comprising: The air conditioning case includes a pair of case members (211 and 212) that are combined with each other in a direction that intersects the axial direction of the first drive shaft when the first door and the second door are attached.
The air conditioner according to claim 1, wherein the partition plate is formed integrally with at least one of the case members. The air conditioning case includes a pair of case members (211A, 212A) that are combined with each other in the axial direction of the first drive shaft when the first door and the second door are attached.
The partition plate is configured as a separate part from the pair of case members, and the pair of case members are shafts of the first drive shaft portion in a state in which the first door, the partition plate, and the second door are attached. The air conditioner according to claim 1, wherein the air conditioner is combined in a direction. The first drive shaft portion and the second drive shaft portion are shaft portions that are independently driven,
The first drive shaft portion and the second drive shaft portion are formed such that portions protruding outward from the air conditioning case have the same shaft diameter. The air conditioner described in the item.

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