JP2019018785A - Air conditioner - Google Patents

Abstract

To provide an air conditioner which can inhibit vibration of a duct part which introduces cooling air to a motor.SOLUTION: An air conditioning case 10 has a ventilation flue 11 in which air blown to a vehicle cabin flows. A fan 20 generates airflow in the ventilation flue 11. A motor 30 rotates the fan 20. A motor holder 40 has a housing chamber 41 which houses the motor 30. A duct part 42 extends from the motor holder 40 to the radial outer side to form a cooling air passage 45 which introduces air from the ventilation flue 11 to the housing chamber 41. A first fixing part 71 fixes the motor holder 40 and the air conditioning case 10. A second fixing part 72 fixes a portion of the duct part 42 which is opposite to a center 31 of the motor 30 and the air conditioning case 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioner for a vehicle.

  Conventionally, an air conditioner that performs air conditioning in a passenger compartment is known.

  Patent Document 1 describes a configuration of a motor holder for attaching a motor to an air conditioning case provided in the air conditioner. The motor holder includes a bottomed cylindrical holder main body that accommodates the motor, a duct portion that extends from the holder main body in one of the radial directions and introduces air for cooling the motor, and the holder main body and the duct portion. It has a disk-shaped connecting part to be attached to the air conditioning case. The motor holder is attached to the air conditioning case by passing a screw through a hole provided in the connecting portion and fixing the screw to the air conditioning case.

JP 2002-204547 A

  However, the motor holder described in Patent Document 1 includes a disk-shaped connecting portion for attaching to the air conditioning case. The outer diameter of the connecting portion is slightly smaller than the end portion of the duct portion opposite to the motor center. Therefore, this motor holder has a concern that the manufacturing cost increases due to the large size of the connecting portion. If the connecting portion is abolished, only the duct portion protrudes radially outward from the holder body, and the duct portion has a cantilever structure. In that case, when the vibration of the motor is transmitted to the duct portion, the duct portion vibrates with the rotation of the motor, and there is a possibility that sound accompanying the vibration is emitted into the vehicle interior.

  An object of this invention is to provide the air conditioner which can suppress the vibration of the duct part which introduces cooling air into a motor in view of the said point.

In order to achieve the above object, the invention according to claim 1
An air conditioner for air conditioning in a passenger compartment,
An air conditioning case (10) having a ventilation path (11) through which air blown into the vehicle compartment flows;
A fan (20) for generating airflow in the ventilation path;
A motor (30) for rotating the fan;
A motor holder (40) having a storage chamber (41) for storing a motor;
A duct portion (42) extending radially outward from the motor holder and forming a cooling air passage (45) for introducing air from the ventilation path into the housing chamber;
A first fixing part (71) for fixing the motor holder and the air conditioning case;
A second fixing portion (72) for fixing the air-conditioning case and a portion of the duct portion opposite to the center of the motor;

  According to this, one end of the duct portion is fixed to the motor holder, and the other end is fixed to the air conditioning case by the second fixing portion, so that a double-supported beam structure is obtained. Therefore, it is possible to suppress the vibration of the duct part accompanying the rotation of the motor. Moreover, a moment will become large by providing a 2nd fixing | fixed part in a position far from the center of a motor among duct parts. Therefore, the second fixed portion can reliably suppress vibration transmitted from the motor to the duct portion with a small force. Therefore, this air conditioner can suppress the release of vibration sound from the duct portion into the passenger compartment.

  In addition, the code | symbol in the parenthesis attached | subjected to each said structure shows an example of the correspondence with the specific structure described in embodiment mentioned later.

It is sectional drawing of the air blower with which the air conditioner which concerns on 1st Embodiment is provided, and its periphery. It is a top view of the motor holder seen from the II direction of FIG. It is a mimetic diagram of an air-conditioner concerning a 1st embodiment. It is sectional drawing of the IV-IV line of FIG. It is sectional drawing of the air blower with which the air conditioner of a comparative example is provided, and its periphery. It is sectional drawing of the VI-VI line of FIG. It is a top view of the motor holder with which the air conditioner concerning a 2nd embodiment is provided.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals, and descriptions thereof are omitted.

(First embodiment)
A first embodiment will be described. The air conditioner of the present embodiment is mounted on a vehicle, sucks one or both of inside air that is air inside the vehicle interior and outside air that is outside the vehicle interior, and adjusts the temperature and humidity of the sucked air into the vehicle interior. By blowing out, air conditioning in the passenger compartment is performed.

  As shown in FIG. 3, the air conditioner 1 includes an air conditioning case 10, a fan 20, a motor 30, a motor holder 40, a duct portion 42, and the like.

  The air conditioning case 10 is formed of a resin having a certain degree of elasticity and excellent in strength. Examples of the resin forming the air conditioning case 10 include polypropylene. The air conditioning case 10 has a ventilation path 11 through which air blown into the vehicle compartment flows.

  The air conditioning case 10 introduces outside air into the ventilation path 11 from outside the vehicle, and an inside air introduction port 12 for introducing the inside air from a predetermined location in the vehicle interior to the upstream side of the ventilation path 11 in the air flow direction. The outside air inlet 13 is provided. Note that a duct (not shown) configured as a separate member from the air conditioning case 10 may be connected to the inside air introduction port 12 or the outside air introduction port 13. In that case, air is introduced into the ventilation path 11 from the inside air introduction port 12 or the outside air introduction port 13 through these ducts.

  The air conditioning case 10 has a plurality of blowing openings 14, 15, and 16 for blowing air from the ventilation path 11 into the vehicle interior on the downstream side in the air flow direction of the ventilation path 11. The air flowing through the ventilation path 11 of the air conditioning case 10 is blown into the vehicle compartment from the plurality of blowing openings 14, 15, 16. The plurality of blowing openings 14, 15, and 16 are configured by a face blowing opening 14, a foot blowing opening 15, and a defroster blowing opening 16. The face blowout opening 14 blows out air-conditioned air toward the upper body of the occupant seated in the front seat or the periphery thereof. The foot blowing opening 15 blows out the conditioned air toward the feet of the passenger. The defroster blowing opening 16 blows conditioned air toward the windshield of the vehicle.

  Note that a duct (not shown) configured as a separate member from the air conditioning case 10 may be connected to each of the plurality of outlet openings 14, 15, 16. In that case, air is blown out from the plurality of blowing openings 14, 15, and 16 into the vehicle interior via these ducts.

  Inside the air conditioning case 10, an inside / outside air switching door 17, a fan 20, an evaporator 50, a heater core 51, a temperature adjustment door 52, mode switching doors 53, 54, and 55 are provided.

  The inside / outside air switching door 17 continuously adjusts the opening area of the inside air introduction port 12 and the opening area of the outside air introduction port 13. The inside / outside air switching door 17 rotates so as to close one of the inside air introduction port 12 and the outside air introduction port 13 as the one opening portion is opened. Thereby, the inside / outside air switching door 17 can adjust the air volume ratio between the inside air and the outside air introduced into the ventilation path 11.

  A centrifugal fan is employed as the fan 20 of the present embodiment. The motor 30 that rotates the fan 20 is accommodated in an accommodation chamber 41 provided in a motor holder 40 that is fixed to the air conditioning case 10. The fan 20 and the motor 30 constitute a blower.

  When the fan 20 rotates with the driving of the motor 30, an air flow is generated in the ventilation path 11. Thereby, the inside air or the outside air is introduced from the inside air introduction port 12 or the outside air introduction port 13 into the ventilation path 11. The air that is blown by the fan 20 and flows through the ventilation path 11 is adjusted in temperature and humidity by the evaporator 50 and the heater core 51, and passes through one of the plurality of outlet openings 14, 15, 16 that communicate with the ventilation path 11. It is blown out into the passenger compartment.

  The evaporator 50 is a heat exchanger for cooling the air flowing through the ventilation path 11. The evaporator 50 constitutes a well-known refrigeration cycle together with a compressor, a condenser, an expansion valve, and the like (not shown). In the refrigeration cycle, the evaporator 50 is disposed downstream of the expansion valve and upstream of the compressor. The evaporator 50 performs heat exchange between a low-temperature and low-pressure refrigerant that flows inside a tube (not shown) and the air that passes through the evaporator 50, and cools the air that passes through the evaporator 50 by the endothermic action due to the latent heat of vaporization of the refrigerant. .

  The heater core 51 is a heat exchanger for heating the air flowing through the ventilation path 11. Engine cooling water flows inside a tube (not shown) of the heater core 51. The heater core 51 performs heat exchange between the engine coolant flowing inside the tube and the air passing through the heater core 51 to heat the air passing through the heater core 51.

  A temperature adjusting door 52 is provided between the evaporator 50 and the heater core 51. The temperature adjustment door 52 adjusts the ratio between the amount of air that flows around the heater core 51 after passing through the evaporator 50 and the amount of air that passes through the heater core 51 after passing through the evaporator 50.

  The face blowout opening 14, the foot blowout opening 15, and the defroster blowout opening 16 are provided with mode switching doors 53, 54, 55 for adjusting the respective opening areas. The mode switching doors 53, 54 and 55 are constituted by a face door 53, a foot door 54 and a defroster door 55. The face door 53 opens and closes the face blowing opening 14. The foot door 54 opens and closes the foot outlet opening 15. The defroster door 55 opens and closes the defroster outlet opening 16.

  As shown in FIGS. 1 and 2, the motor holder 40 is formed in a bottomed cylindrical shape, and has an accommodation chamber 41 for accommodating the motor 30 inside. A duct portion 42 is provided on the outer side in the radial direction of the motor holder 40. The duct part 42 extends outward from the motor holder 40 in the radial direction.

  As shown in FIGS. 1 and 4, a cover member 60 is provided in a portion of the duct portion 42 opposite to the air conditioning case 10. The cover member 60 is provided so as to close an opening provided in a portion of the duct portion 42 opposite to the air conditioning case 10. A cover side fitting portion 62 is provided on the outer edge of the cover member 60. A duct side fitting portion 441 is also provided on the outer edge of the duct portion 42. The cover side fitting portion 62 and the duct side fitting portion 441 are fitted to each other. Thereby, the cover member 60 is airtightly connected to the duct portion 42.

  In this manner, the duct portion 42 and the cover member 60 form a cooling air passage 45 for introducing air from the ventilation passage 11 into the accommodation chamber 41. In other words, the cooling air passage 45 is formed by the duct portion 42 and the cover member 60. By forming the cooling air passage 45 with the duct portion 42 and the cover member 60, the injection molding of the duct portion 42 can be easily performed.

  Further, the duct portion 42 has a cooling air introduction portion 46 that extends in a cylindrical shape toward the air conditioning case 10 at a portion opposite to the center 31 of the motor 30. The cooling air introduction unit 46 is connected to the cooling air supply unit 18 provided in the air conditioning case 10. The cooling air supply unit 18 of the air conditioning case 10 communicates with the ventilation path 11. Thus, air for cooling the motor 30 is supplied from the cooling air supply unit 18 of the air conditioning case 10 to the accommodation chamber 41 of the motor holder 40 through the cooling air supply unit 18 and the cooling air passage 45 of the duct unit 42.

  By the way, when the motor 30 housed in the housing chamber 41 of the motor holder 40 is rotationally driven, the motor 30 may vibrate at a predetermined rotational speed. When this vibration is transmitted from the motor holder 40 to the duct portion 42 and the cover member 60, and the duct portion 42 and the cover member 60 vibrate with the rotation of the motor 30, there is a problem that sound accompanying the vibration is emitted into the vehicle interior. In the present embodiment, this problem is solved by the configuration of the flange portion 47 and the fixing portions 71 and 72 described below.

  As shown in FIGS. 1 and 2, a plurality of flange portions 47 projecting radially outward are provided on the outer periphery on the bottom side of the motor holder 40. In addition, a flange portion 48 is also provided in a portion of the duct portion 42 opposite to the center 31 of the motor 30. In the following description, a plurality of flange portions 47 provided on the motor holder 40 are referred to as “holder flange portions 47”, and a flange portion 48 provided on the duct portion 42 is referred to as “duct flange portion 48” as necessary. I will do it.

  In the present embodiment, the duct flange portion 48 is provided so as to protrude radially outward from a portion of the duct portion 42 opposite to the center 31 of the motor 30. Therefore, the duct flange portion 48 can support the duct portion 42 at a position farthest from the center 31 of the motor 30.

  The holder flange portion 47 and the duct flange portion 48 are respectively provided with holes 471 and 481 that communicate with the plate thickness direction. Further, the cover member 60 is also provided with a hole 61 that communicates in the plate thickness direction at a position corresponding to the hole 481 of the duct flange portion 48. That is, the hole 481 of the duct flange portion 48 and the hole 61 of the cover member 60 are provided at positions that overlap when the duct portion 42 and the cover member 60 are connected.

  On the other hand, a plurality of support portions 19 extend from the air conditioning case 10 at positions corresponding to the plurality of flange portions 47. The plurality of support portions 19 are in contact with the corresponding flange portions 47. A female screw 191 is formed in a portion of the support portion 19 that contacts the flange portion 47.

  The screw 71 is inserted into the hole 471 provided in the holder flange portion 47, and the screw 71 is screwed into the female screw 191 provided in the support portion 19, whereby the motor holder 40 and the air conditioning case 10 are fixed. Also, a screw 72 is inserted into a hole 61 provided in the cover member 60 and a hole 481 provided in the duct flange portion 48, and the screw 72 is screwed into a female screw 191 provided in the support portion 19. The duct part 42 and the air conditioning case 10 are fixed together.

  In the following description, the screw 71 that is inserted into the holder flange portion 47 and fixes the motor holder 40 and the air conditioning case 10 may be referred to as a “first fixing portion 71” as necessary. Further, the screw 72 that is inserted into the duct flange portion 48 and fixes the cover member 60, the duct portion 42, and the air conditioning case 10 may be referred to as a “second fixing portion 72”.

  The screw 72 as the second fixing portion 72 is inserted into the hole 61 provided in the cover member 60 and the hole 481 provided in the duct flange portion 48, so that the duct portion 42 and the cover member 60 have a very simple configuration. And the air conditioning case 10 can be fixed together. As a result, the duct portion 42 has one end fixed to the motor holder 40 and the other end fixed to the air conditioning case 10 by the second fixing portion 72, thereby forming a double-supported beam structure. Further, since the duct flange portion 48 supports the duct portion 42 at a position farthest from the center 31 of the motor 30, the moment increases. Therefore, the second fixing portion 72 can reliably suppress the vibration transmitted from the motor 30 to the duct portion 42 with a small force. Therefore, the air conditioner 1 can suppress the release of vibration sound from the duct portion 42 into the vehicle interior.

  A recess 80 is provided outside the motor holder 40 in the radial direction so as to surround the outer periphery of the motor holder 40. The motor holder 40 and the recess 80 are integrally formed. Further, the air conditioning case 10 is provided with a protrusion 90 extending toward the inside of the recess 80. The air conditioning case 10 and the protrusion 90 are integrally formed. The protrusion 90 is formed in a cylindrical shape so as to surround the outer periphery of the motor holder 40, and the tip thereof is in contact with the inner wall of the recess 80. Thereby, the recessed part 80 and the projection part 90 can prevent the leakage of the air from the ventilation path 11 and the storage chamber 41 to the outside, and can prevent the entry of water or the like into the ventilation path 11 and the storage chamber 41 from the outside. . The protrusion 90 is configured so that the first fixing portion 71 and the second fixing portion 72 are fixed to the motor holder 40, the duct portion 42, the cover member 60, and the air conditioning case 10, so that the tip of the protrusion 90 has a diameter of the motor 30. It is in contact with the inner wall of the recess 80 while being curved outward in the direction.

  Here, a motor holder 400, a cover member 600, and the like included in the air conditioner of the comparative example are shown in FIGS. Also in the comparative example, the cover member 600 is provided so as to close the opening provided in the portion of the duct portion 420 opposite to the air conditioning case 10. However, in the comparative example, the cover member 600 is configured to be fixed to the claw portions 421 provided on both sides in the width direction of the duct portion 420 by the snap fit 610. Therefore, in the comparative example, the structure which fixes the cover member 600 and the duct part 420 is complicated.

  In the comparative example, the duct flange portion 48 described in the first embodiment is not provided for the duct portion 420. Note that the motor holder 400 and the duct part 420 of the comparative example are fixed to the air conditioning case 10 only by the screws 71 inserted into the holes 471 of the holder flange part 47. Therefore, the duct part 420 has a so-called cantilever structure in which only the motor holder 400 side is fixed without being fixed to the air conditioning case 10. Therefore, in the comparative example, when the vibration of the motor 30 housed in the housing chamber 41 increases at a predetermined rotational speed, the vibration is transmitted from the motor holder 400 to the duct portion 420 and the cover member 600, and the duct portion is rotated along with the rotation of the motor 30. 420 and the cover member 600 vibrate. Thus, when the duct part 420 and the cover member 600 vibrate, there exists a subject that the sound accompanying the vibration is discharge | released in a vehicle interior.

  The air conditioner 1 of the present embodiment can exhibit the following operational effects with respect to the air conditioner of such a comparative example.

  (1) In this embodiment, the first fixing portion 71 fixes the holder flange portion 47 provided in the motor holder 40 and the air conditioning case 10. Furthermore, the air-conditioning case 10 is fixed to the duct flange portion 48 provided on the opposite side of the duct portion 42 with respect to the center 31 of the motor 30 by the second fixing portion 72.

  According to this, one end of the duct portion 42 is fixed to the motor holder 40, and the other end is fixed to the air conditioning case 10 by the second fixing portion 72, thereby forming a double-supported beam structure. Therefore, it is possible to suppress the vibration of the duct part 42 accompanying the rotation of the motor 30. Also, the moment is increased by providing the second fixing portion 72 at a position far from the center 31 of the motor 30 in the duct portion 42. Therefore, the second fixing portion 72 can reliably suppress the vibration transmitted from the motor 30 to the duct portion 42 with a small force. Therefore, the air conditioner 1 can suppress the release of vibration sound from the duct portion 42 into the vehicle interior.

  (2) In this embodiment, the 2nd fixing | fixed part 72 is the structure which fixes the duct part 42, the air-conditioning case 10, and the cover member 60 together.

  According to this, the cooling air passage 45 is formed by the cover member 60 and the duct portion 42, whereby the duct portion 42 can be easily injection molded. And the cover member 60, the duct part 42, and the air-conditioning case 10 can be firmly fixed by the 2nd fixing | fixed part 72 with a simple structure. Therefore, the vibration of the cover member 60 accompanying the rotation of the motor 30 can be suppressed by the second fixing portion 72. Therefore, the air conditioner 1 uses the second fixing portion 72 to achieve both simplification of fixing means for the duct portion 42, the cover member 60, and the air conditioning case 10 and suppression of vibration of the cover member 60 accompanying the rotation of the motor 30. be able to.

  (3) In the present embodiment, the second fixing portion 72 is a screw 72 that fixes the cover member 60, the duct portion 42, and the air conditioning case 10.

  Thereby, the duct part 42, the cover member 60, and the air-conditioning case 10 can be firmly fixed by a very simple structure.

  (4) In the present embodiment, the duct portion 42 has a duct flange portion 48 that protrudes in the radially outward direction of the motor 30 at a portion opposite to the center 31 of the motor 30.

  Thereby, it becomes possible to provide the 2nd fixing | fixed part 72 in the position farther from the center 31 of the motor 30 among the duct parts 42, and a moment becomes larger. For this reason, the second fixing portion 72 can reliably suppress vibration transmitted from the motor 30 to the duct portion 42 with a small force.

(Second Embodiment)
A second embodiment will be described. 2nd Embodiment changes the structure of a duct flange part with respect to 1st Embodiment.

  As shown in FIG. 7, in 2nd Embodiment, the duct flange part 49 cross | intersects in the site | part on the opposite side with respect to the center 31 of the motor 30 among the duct parts 42 with respect to the direction where the duct part 42 extends. It is provided so as to protrude in the direction. In the second embodiment, the physique of the duct portion 42 is prevented from increasing in the radial direction of the motor 30 by the duct flange portion 49.

  The duct flange portion 49 is provided with a hole 491 that communicates in the plate thickness direction. Although not shown, the cover member 60 is also provided with a flange at a position corresponding to the hole 491 of the duct flange portion 49, and the flange is provided with a hole leading to the plate thickness direction. Also in the second embodiment, similarly to the first embodiment, the screw as the second fixing portion 72 inserted into the hole of the flange of the cover member 60 and the hole 491 of the duct flange portion 49 is removed from the air conditioning case 10. It is screwed into a female screw 191 provided on the extending support portion 19. Thereby, the cover member 60, the duct part 42, and the air-conditioning case 10 are fixed together. Also in the second embodiment, the second fixing portion 72 can support the duct portion 42 at a position relatively far from the center 31 of the motor 30.

  The second embodiment described above can achieve the same operational effects as the first embodiment.

(Other embodiments)
The present invention is not limited to the embodiment described above, and can be appropriately changed within the scope described in the claims. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.

  (1) In each of the above embodiments, the cooling air passage 45 for introducing air from the ventilation path 11 to the accommodation chamber 41 is formed by the duct portion 42 and the cover member 60. Not exclusively. The cooling air passage 45 may be formed only by the duct portion 42.

  (2) In each of the above embodiments, the motor holder 40 and the duct portion 42 are configured integrally, but the motor holder 40 and the duct portion 42 may be configured as separate members.

  (3) In each of the above embodiments, the centrifugal fan is exemplified as the fan 20 of the blower. However, the fan 20 may employ, for example, an axial fan or a diagonal fan.

  (4) In each of the above embodiments, the screws 71 and 72 are exemplified as the fixing portion for fixing the motor holder 40 and the air conditioning case 10. However, the fixing portion may be fastened with a bolt and a nut, for example.

  (5) In each of the above embodiments, the evaporator 50 is exemplified as the cooling device provided in the air conditioner 1 and the heater core 51 in which the engine cooling water circulates is exemplified as the heating device. However, the cooling device and the heating device are heat provided in the heat pump system. It may be an exchanger or a Peltier element. Alternatively, the air conditioner 1 may not include a cooling device and a heating device.

(Summary)
According to the first aspect shown in part or all of the above-described embodiments, an air conditioner that performs air conditioning in a vehicle interior includes an air conditioning case, a fan, a motor, a motor holder, a duct portion, a first fixing portion, and A second fixing part is provided. The air conditioning case has a ventilation path through which air blown into the passenger compartment flows. The fan generates airflow in the ventilation path. The motor rotates the fan. The motor holder has a storage chamber for storing the motor. The duct portion extends radially outward from the motor holder, and forms a cooling air passage that introduces air from the ventilation path into the housing chamber. The first fixing unit fixes the motor holder and the air conditioning case. A 2nd fixing | fixed part fixes the site | part and air conditioning case on the opposite side with respect to the center of a motor among duct parts.

  According to the second aspect, the air conditioner further includes a cover member that is connected to the duct portion and forms a cooling air passage with the duct portion. A 2nd fixing | fixed part is a structure which fixes a duct part, an air-conditioning case, and a cover member together.

  According to this, the cooling air passage is formed by the duct portion and the cover member, so that the injection molding of the duct portion can be easily performed. By fixing the duct part, the cover member, and the air conditioning case together by the second fixing part, the configuration for fixing the three members can be simplified and firmly fixed. Therefore, the vibration of the duct part and the cover member accompanying the rotation of the motor can be suppressed by the second fixing part. Therefore, this air conditioner can achieve both simplification of the configuration for fixing the duct portion, the cover member, and the air conditioning case by the second fixing portion, and suppression of vibrations of the duct portion and the cover member accompanying the rotation of the motor. .

  According to the 3rd viewpoint, a 2nd fixing | fixed part is a screw which fixes a cover member, a duct part, and an air-conditioning case together.

  Thereby, a duct part, a cover member, and an air-conditioning case can be firmly fixed by a very simple structure.

  According to the 4th viewpoint, the duct part has the flange part which protrudes in the radial direction of a motor in the site | part on the opposite side with respect to the center of a motor. A 2nd fixing | fixed part fixes the flange part which a duct part has, a cover member, and an air-conditioning case together.

  Thereby, a moment becomes larger by providing a 2nd fixing | fixed part in a position farther from the center of a motor among duct parts. Therefore, the second fixing portion can reliably suppress vibration transmitted from the motor to the duct portion with a small force.

  According to the 5th viewpoint, the duct part has the flange part which protrudes in the direction which cross | intersects the direction where a duct part extends in the site | part on the opposite side with respect to the center of a motor. A 2nd fixing | fixed part fixes the flange part which a duct part has, a cover member, and an air-conditioning case together.

  Thereby, while suppressing the vibration of the duct part accompanying rotation of a motor, it can prevent that the physique of a duct part becomes large in the radial direction of a motor by a flange part.

1 Air conditioner
10 Air conditioning case
11 Ventilation path
20 fans
30 motor
40 Motor holder
42 Duct section
45 Cooling air passage
71 1st fixing part
72 Second fixing part

Claims (5)

An air conditioner for air conditioning in a passenger compartment,
An air conditioning case (10) having a ventilation path (11) through which air blown into the vehicle compartment flows;
A fan (20) for generating an airflow in the ventilation path;
A motor (30) for rotating the fan;
A motor holder (40) having a storage chamber (41) for storing the motor;
A duct portion (42) extending radially outward from the motor holder and forming a cooling air passage (45) for introducing air from the ventilation path into the housing chamber;
A first fixing portion (71) for fixing the motor holder and the air conditioning case;
An air conditioner provided with the 2nd fixing | fixed part (72) which fixes the site | part on the opposite side with respect to the center of the said motor among the said duct parts, and the said air conditioning case. The air conditioner further includes a cover member (60) connected to the duct portion to form a cooling air passage with the duct portion,
The air conditioner according to claim 1, wherein the second fixing portion is configured to fix the duct portion, the cover member, and the air conditioning case together.   The air conditioner according to claim 2, wherein the second fixing portion is a screw that fixes the cover member, the duct portion, and the air conditioning case together. The duct portion has a flange portion (48) protruding in a radially outward direction of the motor at a portion opposite to the center of the motor.
The air conditioner according to claim 2 or 3, wherein the second fixing portion fixes the flange portion, the cover member, and the air conditioning case of the duct portion together. The duct portion has a flange portion (49) protruding in a direction intersecting with a direction in which the duct portion extends, at a portion opposite to the center of the motor.
The air conditioner according to claim 2 or 3, wherein the second fixing portion fixes the flange portion, the cover member, and the air conditioning case of the duct portion together.

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