JP6291192B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner that is mounted on a vehicle and that adjusts the temperature of the vehicle interior by blowing air that has been temperature-adjusted by a heat exchanger into the vehicle interior.

  2. Description of the Related Art Conventionally, a vehicle air conditioner mounted on a vehicle has taken inside air / outside air into an air conditioning case having an air passage inside by a blower, air cooled by an evaporator as a cooling means, and a heater core as a heating means The air heated by the air conditioning case is mixed in a desired mixing ratio by operating a damper in the air conditioning case, and then blown from the plurality of air outlets provided in the air conditioning case into the vehicle interior through the air duct. The temperature and humidity in the passenger compartment are adjusted.

  For example, a vehicle air conditioner as described above has a full-center structure in which a blower is disposed at a substantially central portion of an air conditioning case, as disclosed in Patent Document 1. In this vehicle air conditioner, an inside / outside air switching unit is provided on the passenger seat side of the air-conditioning case when the vehicle is mounted, and the inside / outside air switching unit is switched from the inside / outside air switching unit by operating the blower. Air flows into the air conditioning case and is guided to the air outlet.

Japanese Patent Laid-Open No. 2004-210101

  In the vehicle air conditioner described above, when the drive motor constituting the blower breaks down and is removed from the air conditioning case, the inside / outside air switching unit is disposed on the passenger seat side, so that the air conditioning case moves toward the driver seat side. It is necessary to remove the blower. However, on the driver's seat side of the vehicle air conditioner in the vehicle, instruments, a drive motor for power steering, and the like are arranged, and a sufficient space for taking out the blower from the air conditioning case to the side is secured. It is difficult.

  On the other hand, when an air blower is to be removed from the air conditioning case to the passenger seat side, a screw for fastening the air blower to the air conditioning case is provided in the air conditioning case. When it is turned and removed, there is a concern that it will fall into the air conditioning case. Thus, when a screw is dropped into the air conditioning case, it is necessary to disassemble the air conditioning case and take out the screw, which requires a very complicated operation.

  The present invention has been made in consideration of the above-mentioned problems, and is intended for a vehicle capable of improving the assembly of a blower to an air conditioning case and reliably preventing the fastening member from falling into the air conditioning case. An object is to provide an air conditioner.

In order to achieve the above object, the present invention provides an inside / outside air switching unit that takes in inside / outside air by switching, an inside / outside air switching unit, and a flow path through which air flows and a blower opening that blows air into the vehicle interior. The air conditioning case is arranged so that the inside / outside air switching unit side is the passenger seat side and the side opposite to the inside / outside air switching unit side is the driver's seat side when the vehicle is mounted. In the vehicle air conditioner with a blower in the center,
The blower has a housing that holds the drive motor, and a fan that is connected to the drive motor and rotates.
Connecting the fan to the drive motor, and a blower that is held by the housing of the drive motor, outside air switching unit side or RaOsamu to pay relative to the air-conditioning case, the blower from the opposite side of the outside air switching unit side housing Is fixed to the air conditioning case by a fastening member.

  According to the present invention, in the vehicle air conditioner in which the blower is housed in the substantially center in the width direction of the air conditioning case, the blower includes the housing that holds the drive motor and the fan that is connected to the drive motor and rotates. On the other hand, the blower is housed from the inside / outside air switching unit side, and the blower is fixed by a fastening member from the side opposite to the inside / outside air switching unit side.

  Therefore, when the blower is attached to or detached from the air conditioning case, it can be taken out and stored from the inside / outside air switching unit side with sufficient space, and the fastening member is removed from the outside of the air conditioning case. Can be reliably prevented from being dropped into the air conditioning case, and the fastening member can be easily fastened, so that the assembling property can be improved.

  Further, by fitting and fixing the housing and the air conditioning case, the fan housing can be temporarily fastened to the air conditioning case before being fixed by the fastening member. It is not necessary to perform the tightening work of the fastening member while holding the grip, and the assembly workability can be improved.

  Furthermore, by rotating and fitting the housing to the air conditioning case, the blower including the housing can be easily and reliably fixed to the air conditioning case.

  Furthermore, by setting the diameter of the housing to be smaller than the diameter of the fan, it is possible to reduce the size of the blower and the air-conditioning case to which the blower is mounted, as compared with the conventional vehicle air conditioner.

  According to the present invention, the following effects can be obtained.

  In other words, the blower housed in the center of the width direction of the air conditioning case has a housing that holds the drive motor, houses the blower from the inside / outside air switching unit side with respect to the air conditioning case, and is opposite to the inside / outside air switching unit side. By fixing the blower with the fastening member from the side, when removing the blower from the air conditioning case, the removal direction of the fastening member is outside the air conditioning case, so the fastening member is accidentally dropped into the air conditioning case. Therefore, the fastening member can be easily fastened, so that the assembling property can be improved.

1 is an overall front view showing a vehicle air conditioner according to an embodiment of the present invention. It is an enlarged front view which shows the air blower vicinity in the vehicle air conditioner of FIG. It is sectional drawing along the III-III line of FIG. 4A is an enlarged front view showing a state in the middle of assembling the blower to the vehicle air conditioner of FIG. 3, and FIG. 4B is a cross-sectional view taken along the line IVB-IVB of FIG. 4A.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a vehicle air conditioner according to an embodiment of the present invention. In the vehicle air conditioner 10, the right side (arrow A direction) shown in FIG. 1 is the front side of the vehicle, that is, the engine room side, and the left side (arrow B direction) is the rear side of the vehicle, that is, the passenger compartment. Since it is mounted so as to be inside, the direction of arrow A will be described below as the front of the vehicle, and the direction of arrow B will be described as the rear of the vehicle.

  As shown in FIG. 1, the vehicle air conditioner 10 includes an air conditioning case 14 that constitutes each air passage 12, a blower 16 disposed in the air conditioning case 14, and an evaporator that cools the air. 18, a heater core 20 that heats the air, and a damper mechanism 22 that switches the flow of air flowing through each passage 12.

  The air conditioning case 14 includes, for example, first and second divided cases 24 and 26 having substantially symmetrical shapes, and the first and second divided cases 24 and 26 are arranged in the vehicle width direction (arrows C1 and C2 in FIG. 3). Direction). Above the air conditioning case 14, an air outlet 28 is formed to blow air to the vicinity of the passenger's face and to the front window. Here, the first split case 24 is arranged on the driver's seat side (in the direction of arrow C1 in FIG. 3) when the vehicle is mounted, and the second split case 26 is on the passenger seat side (in the direction of arrow C2 in FIG. 3). ) Will be described.

  As shown in FIGS. 1 and 2, the air conditioning case 14 has a storage hole 30 at a position on the vehicle rear side (arrow B direction) when the vehicle air conditioner 10 is mounted on the vehicle. The blower 16 is accommodated. As shown in FIGS. 2 and 3, the storage hole 30 extends in the air conditioning case 14 along the vehicle width direction (arrow C1, C2 direction), and is on the first split case 24 side (arrow C1 direction). And a second hole 34 formed on the second split case 26 side (in the direction of arrow C2) and disposed coaxially with the first hole 32.

  The first hole portion 32 extends with a substantially constant diameter along the axial direction (the directions of the arrows C1 and C2), and has a radius from the inner peripheral surface at the end opposite to the second divided case 26 side. A plurality of stopper portions 36 and flange portions 38 protruding inward are formed at regular intervals along the circumferential direction. As shown in FIG. 2, for example, three stopper portions 36 and three flange portions 38 are provided.

  The stopper portion 36 is formed in a bowl shape protruding with a predetermined width in the radial inner direction with respect to the inner peripheral surface of the first hole portion 32, and three stopper portions 36 are provided at equal intervals along the circumferential direction. And the housing 44 of the air blower 16 accommodated in the accommodation hole 30 contacts, and is latched in an axial direction (arrow C1 direction).

  The flange portion 38 is, for example, formed in a plate shape having a predetermined thickness and bulging radially inward in a circular arc shape with respect to the inner peripheral surface of the first hole portion 32, and with respect to the stopper portion 36. They are provided at predetermined intervals along the circumferential direction. The flanges 38 are alternately arranged so as to alternate with the stoppers 36 in the circumferential direction of the first hole 32. Further, the inner peripheral diameter that is the innermost side of the flange portion 38 is set smaller than the inner peripheral diameter of the stopper portion 36.

  The second hole portion 34 is formed with substantially the same diameter as the first hole portion 32 and extends with a substantially constant diameter along the axial direction (the directions of arrows C1 and C2). An air switching unit is connected, and air is taken into the second hole 34 through the inside / outside air switching unit.

  As shown in FIGS. 1 to 3, the blower 16 includes, for example, a rotary fan (fan) 40 having a plurality of fins, a drive motor 42 that rotationally drives the rotary fan 40, and an end of the drive motor 42. This is a centrifugal fan having a housing 44 for holding the part. The blower 16 is arranged substantially horizontally so that the axes of the rotary fan 40 and the drive motor 42 extend along the vehicle width direction (arrow C1, C2 direction) in the first and second divided cases 24, 26. In addition, it is arranged so as to straddle the first divided case 24 and the second divided case 26 (see FIG. 3). More specifically, the blower 16 is disposed so that the housing 44 is on the first divided case 24 side (in the direction of the arrow C1), the rotary fan 40 is straddling the first and second divided cases 24 and 26, and It is provided in a straight line along.

  That is, the vehicle air conditioner 10 is a full center type HVAC (Heating, Ventilation, and Air Conditioning) in which the air blower 16 is provided at a substantially center in the width direction of the air conditioning case 14.

  The housing 44 includes a disk-shaped base portion 46 and a motor storage portion 48 that protrudes in a cylindrical shape from one end portion of the base portion 46, and is provided so that the base portion 46 faces the end portion of the rotary fan 40. The drive motor 42 is housed in the motor housing 48. Further, the diameter of the motor storage portion 48 is formed smaller than the diameter D1 of the base portion 46 and is set smaller than the diameter of the stopper portion 36 in the first divided case 24.

  In addition, a plurality of hooks 50 are provided at one end of the base portion 46 so as to be spaced apart at equal intervals along the circumferential direction of the base portion 46. The hook 50 protrudes from the base portion 46 by a predetermined height in the same direction as the direction in which the motor housing portion 48 protrudes, and then has a cross section having a locking portion 52 bent at a right angle toward the radially outward direction. It is formed in an L shape. That is, the locking part 52 protrudes in parallel toward the outer peripheral side of the base part 46.

  Further, as shown in FIG. 3, the diameter D1 of the base portion 46 in the housing 44 is set smaller than the diameter (outer diameter) D2 of the rotary fan 40 (D1 <D2).

  Further, in the state in which the blower 16 is housed in the air conditioning case 14, the motor housing portion 48 projects outward from the first hole portion 32, and a cover 54 is provided on the outer peripheral surface of the motor housing portion 48. The cover 54 is engaged with a guide groove 48a (see FIG. 4A) formed on the outer peripheral surface, and a screw (fastening member) 56 inserted into an end portion is a boss portion 58 (see FIG. 3) of the first divided case 24. 4A) and screwed into a screw hole 59 (see FIG. 4A) formed in the base portion 46 of the blower 16 to be fastened together. Accordingly, the blower 16 is fixed to the first divided case 24 with the screw 56 in a state where the blower 16 is stored in the storage hole 30 of the air conditioning case 14.

  In addition, you may make it fix the said air blower 16 by fastening the boss | hub part 58 of the 1st division | segmentation case 24, and the base part 46 of the air blower 16 directly with the screw 56, without attaching the cover 54. FIG.

  Then, when the drive motor 42 is driven to rotate based on a control signal from a controller (not shown), the rotary fan 40 rotates integrally, and accordingly, air is taken in from an inside / outside air switching unit (not shown), and the second hole The air is sucked from one end side of the rotary fan 40 to the center through the portion 34 and then sent out to the passage 12 formed in the air conditioning case 14.

  Further, as shown in FIG. 1, an evaporator 18 is housed inside the air conditioning case 14 at a position below the blower 16, and the evaporator 18 includes, for example, a first divided case 24 and a second divided case 26. The air conditioning case 14 is disposed so as to be inclined at a predetermined angle with respect to the height direction. A refrigerant is circulated through the evaporator 18 through a plurality of tubes (not shown). When air passes through fins provided between the tubes, heat exchange between the air and the refrigerant is performed. The air thus supplied is supplied to the downstream side of the evaporator 18.

  Further, the heater core 20 is housed in the air conditioning case 14 at a position on the vehicle front side (arrow A direction) with respect to the evaporator 18, and the heater core 20 is, for example, a first divided case 24 and a second divided case 26. Is provided on the downstream side of the evaporator 18, and, like the evaporator 18, is inclined by a predetermined angle with respect to the height direction of the air conditioning case 14, and is arranged substantially in parallel. In the heater core 20, hot water is circulated through a plurality of tubes (not shown). When air passes through fins provided between the tubes, heat exchange between the air and the hot water is performed. The air thus supplied is supplied to the downstream side of the heater core 20.

  The damper mechanism 22 includes an air mix damper 60 provided between the evaporator 18 and the heater core 20, and a switching damper 62 that switches a blowing state of the blower port 28. The air mix damper 60 is, for example, a curved plate shape. Are formed along the width direction of the air conditioning case 14, and both side portions thereof are guided along guide means (not shown) provided on the inner wall surface of the air conditioning case 14. A rack gear is formed on the inner wall surface of the air mix damper 60, and the pinion gear of the shaft 64 that is pivotally supported by the air conditioning case 14 is engaged.

  Then, the shaft 64 is rotated by a predetermined angle under the driving action of an actuator (not shown), and the air mix damper 60 slides along the guide unit along with this, so that the air cooled by the evaporator 18 (cold air) Then, the mixing ratio with the air (hot air) heated by the heater core 20 is adjusted, and the air is blown downstream.

  The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above. Next, a case where the blower 16 is assembled to the air conditioning case 14 will be described. The fan 16 is assembled before the inside / outside air switching unit is assembled to the air conditioning case 14.

  First, as shown in FIG. 4B, the blower 16 is positioned to face the second hole 34 of the second divided case 26 in the air conditioning case 14, and the housing 44 is located on the second hole 34 side (in the direction of the arrow C <b> 1). In this state, the fan 16 is inserted into the second hole 34 and then inserted into the first hole 32 so that the motor housing 48 protrudes outside the first divided case 24 (see FIG. 3).

  And the further movement to the said 1st division | segmentation case 24 side (arrow C1 direction) is controlled because the one end part of the base part 46 in the air blower 16 contact | abuts to the stopper part 36 of the 1st hole 32, Next, From the state shown in FIG. 4A, the blower 16 is rotated in a predetermined direction (arrow E direction), and the plurality of hooks 50 are respectively moved to positions where they are engaged with the flanges 38. As a result, the flange portion 38 of the first divided case 24 is sandwiched between the locking portion 52 of the hook 50 and the base portion 46, and is temporarily secured with the blower 16 being housed in the housing hole 30. It becomes a state.

  Finally, after the cover 54 is engaged with the guide groove 48a of the motor housing portion 48 exposed to the outside from the first divided case 24, the end portions thereof are the boss portion 58 of the first divided case 24 and the base portion of the housing 44. Fastened to 46 integrally with a screw 56. Thereby, the blower 16 is fixed to the first divided case 24 via the cover 54.

  As described above, the screw 56 can be fastened from the outside of the first divided case 24 to fix the blower 16 accommodated in the air conditioning case 14, so that the screw 56 may be dropped when the blower 16 is assembled or removed. , It is prevented from entering the inside of the air conditioning case 14 (passage 12 and the like). In other words, since the dropped screw 56 falls to the outside of the air-conditioning case 14, the screw 56 can be easily found and reassembled.

  Moreover, since the fastening operation | work of the air blower 16 with respect to the air-conditioning case 14 can be performed from the outer side of the 1st division | segmentation case 24 used as the housing 44 side, in the air blower 16, the diameter D1 of the housing 44 is set with respect to the diameter D2 of the rotary fan 40. Accordingly, it is possible to reduce the size of the air blower 16 and the air conditioning case 14 to which the air blower 16 is attached, as compared with a conventional vehicle air conditioner.

  Furthermore, since the blower 16 can be temporarily fastened by engaging the hook 50 with the flange portion 38 in advance with respect to the first divided case 24 before being fixed with the screw 56, It is not necessary to perform the tightening operation of the screw 56 while holding the blower 16, and the assembly workability can be improved.

  Furthermore, for example, when performing maintenance when the blower 16 is out of order, even when the blower 16 is removed from the air conditioning case 14, the passenger seat side (in the direction of the arrow C2) having a relatively large space through the second hole 34. Therefore, it is possible to easily perform maintenance work as compared with the case of taking out from the driver's seat side (first hole portion 32 side) with less space.

  Next, the operation of the vehicle air conditioner 10 assembled as described above will be briefly described.

  First, when an occupant (not shown) operates an operation lever disposed in a vehicle compartment of a vehicle on which the vehicle air conditioner 10 is mounted, an actuator (not shown) is driven according to the operation of the operation lever, and the driving force The shaft 64 to which the air is transmitted rotates by a predetermined angle, so that the air mix damper 60 slides and displaces by a predetermined distance toward the front side or the rear side of the vehicle under the guiding action by a guide means (not shown).

  At the same time, on the basis of a control signal from a controller (not shown), the drive motor 42 of the blower 16 is rotationally driven to rotate the rotary fan 40, and the air taken into the air conditioning case 14 through an inside / outside air switching unit (not shown). Is sent from. The air flows downward through the passage 12, is cooled by passing through the evaporator 18, is then mixed with the air that has passed through the heater core 20, is adjusted to a desired temperature, and is blown through the air outlet 28. The air is blown into the passenger compartment.

  In addition, the vehicle air conditioner according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Vehicle air conditioner 14 ... Air conditioning case 16 ... Air blower 18 ... Evaporator 20 ... Heater core 24 ... 1st division | segmentation case 26 ... 2nd division | segmentation case 30 ... Storage hole 32 ... 1st hole 34 ... 2nd hole 36 ... Stopper Numeral 38 ... Bridge 40 ... Rotary fan 42 ... Drive motor 44 ... Housing 46 ... Base 48 ... Motor storage 50 ... Hook 56 ... Screw

Claims (4)

And outside air switching unit capturing switch the inside air to ambient, said outside air switching unit is connected, and a air conditioning case having a blower port for blowing into the flow path and the vehicle interior circulating air, the air conditioning case is When the vehicle is mounted, the vehicle is arranged such that the inside / outside air switching unit side is the passenger seat side, and the side opposite to the inside / outside air switching unit side is the driver's seat side, and a fan is housed in the substantially center in the width direction of the air conditioning case Air conditioner for
The blower includes a housing that holds a drive motor, and a fan that is connected to the drive motor and rotates.
The fan is connected to the driving motor, and a blower held by the housing of the drive motor, wherein the outside air switching unit side or RaOsamu paid to the air conditioning case, and said outside air switching unit side The vehicle air conditioner characterized in that the housing of the blower is fixed to the air conditioning case by a fastening member from the opposite side. The vehicle air conditioner according to claim 1,
The vehicle air conditioner is fixed by fitting the housing and the air conditioning case. The vehicle air conditioner according to claim 2,
The vehicle air conditioner is characterized in that the housing is rotationally fitted to the air conditioning case. In the vehicle air conditioner according to any one of claims 1 to 3,
The vehicle air conditioner is characterized in that a diameter of the housing is set smaller than a diameter of the fan.

Images