JP2019127135A - Vehicle air conditioner - Google Patents

Abstract

An object of the present invention is to reduce collision noise when an opening is closed by a damper in a vehicle air conditioner. An air conditioning case of a vehicle air conditioner is provided with a vent adjustment damper that adjusts the amount of air blown from a vent air vent into a vehicle interior. An inner wall surface of a vent adjustment damper is provided on an inner wall surface of a vent adjustment damper. Are provided with a plurality of ribs 62 that bulge in the thickness direction and extend in the axial direction of the rotary shaft 56, and between the adjacent ribs 62, a vibration isolating member 64 made of a rubber material is provided. When the vent adjustment damper 44 rotates and contacts the seal wall 66 of the air conditioning case 14, the vibration is suppressed by the plurality of ribs 62 and the vibration isolation member 64. The collision sound at the time of contact with 66 is reduced. [Selection] Figure 2

Description

  The present invention relates to a vehicle air conditioner that is mounted on a vehicle and blows air whose temperature has been adjusted by a heat exchanger in an air conditioning case into the vehicle interior to adjust the temperature of the vehicle interior.

  2. Description of the Related Art Conventionally, a vehicle air conditioner mounted on a vehicle takes in inside and outside air by an air blower into an air conditioning case having an air passage formed therein, and air cooled by an evaporator as a cooling means and a heater core as a heating means. After driving the heated air and the air mix door to mix in a desired mixing ratio in the air conditioning case, for example, by blowing air from a plurality of openings provided in the air conditioning case through the air duct into the vehicle interior Temperature and humidity adjustments are made.

  In such a vehicle air conditioner, for example, as disclosed in Patent Document 1, there is provided a butterfly door that opens and closes a face blowout opening, a defroster blowout opening, and a foot blowout opening in a case. And a sealing material for covering the outer peripheral edge of the door substrate portion, and provided rotatably in the case via rotation shafts provided at both ends in the width direction of the door substrate portion. Yes. Then, the butterfly door rotates with the rotation axis as a fulcrum, and the seal material contacts the door contact surface of the case, thereby switching the open / close state of the opening such as the face outlet.

JP 2004-74945 A

  However, in the butterfly door of the above-described vehicle air conditioner, since the seal member is formed of an elastic material such as rubber, silicone rubber, thermoplastic elastomer or the like which does not undergo compression deformation, the seal material is closed when the butterfly door is closed. When the door contact surface of the case abuts at high speed, the impact is not absorbed and a collision sound is generated, which causes a problem of giving discomfort to the occupants in the vehicle compartment.

  The present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to provide a vehicular air-conditioning system capable of reducing the collision noise when the opening is closed by the damper.

To achieve the above object, the present invention provides a vehicle air conditioner having a casing having a passage through which air flows and a damper for opening and closing an opening of the casing.
The damper includes a shielding plate that closes the opening;
A rotating shaft provided on the shielding plate and rotatably supporting the shielding plate with respect to the casing;
A sealing member made of a rubber material provided on the peripheral edge of the shielding plate and in contact with the sealing surface of the casing formed on the peripheral edge of the opening;
A plurality of ribs provided on the shielding plate,
Anti-vibration members provided between adjacent ribs,
And the like.

  According to the present invention, the damper for opening and closing the opening of the casing is provided with a plurality of ribs with respect to the shielding plate, and the anti-vibration member is provided between the ribs. Is possible. As a result, when the damper is brought into contact with the seal surface of the casing to close the opening, the vibration of the damper with improved rigidity is suppressed, so that the collision noise when the damper contacts can be suitably reduced. Become.

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

  That is, in the damper for opening and closing the opening of the casing, the rigidity of the damper can be enhanced by providing a plurality of ribs with respect to the shielding plate and providing a vibration isolation member between the ribs. As a result, when the damper is brought into contact with the seal surface of the casing to close the opening, the vibration of the damper can be suppressed, and the collision noise when the damper abuts can be suitably reduced. It is possible to reduce the occupant discomfort caused.

1 is an overall cross-sectional view of a vehicle air conditioner according to an embodiment of the present invention. FIG. 2A is an external perspective view of a vent adjustment damper in the vehicle air conditioner shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB of FIG. 2A.

  The preferred embodiments of the air conditioning system for a vehicle according to the present invention will be described in detail below with reference to the attached drawings. In FIG. 1, reference numeral 10 denotes a vehicle air conditioner according to the embodiment of the present invention. In the following description, the right side (arrow A direction) of the vehicle air conditioner 10 shown in FIG. 1 will be referred to as the front side of the vehicle, and the left side (arrow B direction) will be described as the rear side of the vehicle.

  As shown in FIG. 1, the vehicle air conditioner 10 includes an air conditioning case (casing) 14 which constitutes each passage 12 of air, and an evaporator 16 which is disposed inside the air conditioning case 14 and cools the air. The heater core 18 heats the air, and the damper mechanism 20 switches the flow of the air flowing in the respective passages 12.

  Above the air conditioning case 14, a vent air outlet (opening) 22 for blowing air near the face of the occupant in the vehicle compartment, and a defroster air outlet 24 adjacent to the vent air outlet 22 for blowing air near the front window of the vehicle The air-conditioning case 14 is formed with a foot air outlet 26 for blowing air in the vicinity of the foot of the occupant who opens downward.

  On the other hand, inside the air conditioning case 14, the evaporator 16 is accommodated on the front side (the arrow A direction), and the heater core 18 is accommodated on the downstream side of the evaporator 16, that is, on the rear side (the arrow B direction). Then, air is introduced into the air conditioning case 14 from a blower through a duct (not shown) connected to a position on the upstream side of the evaporator 16, and the air is cooled by passing through the evaporator 16 and passing through the heater core 18. The air is heated.

  Further, the passage 12 in the air conditioning case 14 is a cold air passage 28 in which the evaporator 16 is disposed, a warm air passage 30 formed on the downstream side of the cold air passage 28 and a heater core 18 disposed, and a downstream side of the cold air passage 28 And a bypass passage 32 that bypasses the heater core 18. The cold air passage 28 is connected to the hot air passage 30 through the hot air opening 34 at a substantially central portion of the air conditioning case 14 and is connected to the bypass passage 32 through the cold air opening 36.

  The damper mechanism 20 is provided between the evaporator 16 and the heater core 18 and opens and closes the hot air opening 34. The damper mechanism 20 is provided in the bypass passage 32 downstream of the evaporator 16 and opens and closes the cold air opening 36. Second air mix damper 40, a vent switching damper 42 for switching the air blowing state of the vent air outlet 22 and the defroster air outlet 24, and a vent adjusting damper for adjusting the air blowing amount from the vent air outlet 22 to the vehicle cabin Damper 44 and a foot adjustment damper 46 for adjusting the air flow from the hot air passage 30 to the foot air outlet 26.

  The first and second air mix dampers 38 and 40 have, for example, a butterfly structure in which two blades 50 extend in a direction away from each other around the rotation shaft 48, and the air conditioning case 14 around the rotation shaft 48. Are rotatably supported. Then, from the fully closed state in which the upper end portion and the lower end portion of the first air mix damper 38 abut on the inner wall portion of the air conditioning case 14, the upper end portion is the evaporator 16 side (arrow A direction) and the lower end portion is the heater core It rotates so that it may approach 18 side (arrow B direction).

  Thereby, the hot air opening 34 is opened and closed by the first air mix damper 38, so that the communication state between the cold air passage 28 on the downstream side of the evaporator 16 and the warm air passage 30 on the upstream side of the heater core 18 is switched. Air flows from the cold air passage 28 to the hot air passage 30 at a predetermined flow rate.

  Further, the second air mix damper 40 switches the communication state between the cold air passage 28 formed on the downstream side of the evaporator 16 and the bypass passage 32 bypassing the heater core 18 by opening and closing the cold air opening 36, and the cold air passage Air flows at a predetermined flow rate from 28 to the bypass passage 32.

  The vent switching damper 42 is formed in a cantilever structure having blades 54 extending in one direction from a rotating shaft 52 supported by the air conditioning case 14, and is ventilated by rotating around the rotating shaft 52. The opening / closing state of the opening 22 and the defroster blower opening 24 is switched.

  The vent adjustment damper 44 is provided at a position facing the vent air outlet 22, as shown in FIGS. 1 to 2B, and has a butterfly structure similar to the first and second air mix dampers 38 and 40. A pair of blades (shielding plates) 58 extending from. A sealing member 60 made of an elastic material such as rubber is provided at the tip of the blade 58 so as to protrude.

  Further, on the inner wall surface 58a of the blade 58, a plurality of ribs 62 expanded at a predetermined height in the thickness direction are provided, and the ribs 62 are in the width direction of the blade 58 In FIG. 2A, they extend in a straight line along the direction of arrow C), and are formed to be equally spaced from each other in the direction orthogonal to the width direction. That is, the ribs 62 are formed so as to be parallel to each other.

  Further, a vibration isolation member 64 made of a rubber material such as thermoplastic elastomer or butyl rubber is mounted between adjacent ribs 62 in the blade 58, and the vibration isolation member 64 fills the space between the ribs 62. It is formed in a rectangular shape in cross section and is formed to extend along the rib 62, and is formed so as not to be substantially flush with the top portion 62a of the rib 62 (see FIG. 2B) .

  Then, as shown in FIG. 1, the vent adjustment damper 44 rotates counterclockwise around the rotation shaft 56 to form a seal wall (seal surface) in which the seal member 60 is formed inside the air conditioning case 14. As a result, the communication between the upstream cold air passage 28 or the bypass passage 32 and the vent air outlet 22 is interrupted.

  The plurality of ribs 62 and the vibration isolation member 64 described above are not limited to the case where they are provided only in the vent adjustment damper 44, and the first and second air mix dampers 38 and 40, which are also butterfly structures, It may be provided in the adjustment damper 46, and may be provided at the tip of the vent switching damper 42 which is a cantilever structure. That is, in the air conditioning case 14, the damper is not particularly limited as long as it is a damper capable of adjusting or switching the flow state of the air flowing through the passage 12.

  The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above. Next, its operation and effects will be described.

  First, the case where the cooling operation which lowers the room temperature in the passenger compartment is performed and the air is blown near the passenger's face in the passenger compartment will be described.

  A passenger (not shown) operates the operation button in the passenger compartment to select the cooling operation, so that the first air mix damper 38 is fully closed, the communication between the cold air passage 28 and the hot air passage 30 is interrupted, and The second air mix damper 40 is fully opened, and the cold air passage 28 and the bypass passage 32 are in communication with each other. Further, the vent switching damper 42 rotates toward the defroster air outlet 24, and the vent adjustment damper 44 rotates clockwise about the rotation shaft 56.

  At the same time, air is supplied from the blower not shown to the air conditioning case 14, and the air cooled by passing through the evaporator 16 flows from the cold air passage 28 through the bypass passage 32 to the vent air outlet 22, and The air is blown near the passenger's face.

  Next, when switching from the cooling operation to the heating operation described above, the first air mix damper 38 is rotated from the cooling operation state described above to connect the cold air passage 28 and the hot air passage 30, and By turning the mix damper 40 into a closed state, the communication between the cold air passage 28 and the bypass passage 32 is shut off.

  Further, while the vent switching damper 42 is rotated to the vent air outlet 22 side, the vent adjustment damper 44 is rotated counterclockwise around the rotation shaft 56, and the seal member 60 is moved to the seal wall 66 of the air conditioning case 14 respectively. And abut. As a result, the seal member 60 of the vent adjustment damper 44 abuts on the seal wall 66, whereby the communication between the vent air outlet 22 and the upstream bypass passage 32 is interrupted.

  At this time, since the vent adjustment damper 44 has the plurality of ribs 62 and the vibration isolation member 64 on the inner wall surface 58a of the blade 58 to enhance the rigidity, the vibration is suppressed and the seal member 60 The collision noise when contacting the seal wall 66 is reduced.

  Thus, by rotating the first air mix damper 38 from the fully closed state, the cold air passage 28 and the hot air passage 30 communicate with each other through the hot air opening 34 and are supplied from the blower (not shown) to the air conditioning case 14. After the air cooled by the evaporator 16 is heated to a predetermined temperature by passing through the heater core 18 from the cold air passage 28, for example, a desired temperature and air flow from the foot air outlet 26 to the vicinity of the occupant's foot in the vehicle compartment It is blown with. At the same time, the communication between the cool air passage 28 and the bypass passage 32 is blocked by the second air mix damper 40, so that the air cooled by the evaporator 16 is prevented from being blown from each air outlet.

  As described above, in the present embodiment, the vent adjustment damper 44 of the butterfly structure is provided openably and closably in the air conditioning case 14 constituting the vehicle air conditioner 10, and the inner wall surface 58a of the blade 58 has a plurality of ribs 62 is provided so as to expand in the thickness direction, and a vibration isolation member 64 made of a rubber material is provided between the adjacent ribs 62, so that the rigidity of the vent adjustment damper 44 The vibration is enhanced by the vibration member 64, and accordingly, the vibration of the vent adjustment damper 44 can be suppressed.

  As a result, when the vent adjustment damper 44 is closed and the seal member 60 abuts on the seal wall 66 of the air conditioning case 14, the collision noise can be suitably reduced, and the occupant's discomfort caused by the collision noise. It is possible to reduce the

  Further, the plurality of ribs 62 and the vibration isolation member 64 in the vent adjustment damper 44 are provided to extend along the width direction (the arrow C direction in FIG. 2A) in the axial direction of the rotation shaft 56 as described above. For example, it may be provided to extend in the direction orthogonal to the axial direction.

  The vehicle air conditioner according to the present invention is, of course, not limited to the above embodiment, and various configurations can be adopted without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Air-conditioner for vehicles 14 Air-conditioning case 20 Damper mechanism 22 Vent ventilation port 44 Vent adjustment damper 50, 54, 58 Blade 58a Inner wall surface 60 Seal member 62 Rib 64 Vibration-proof member

Claims (1)

In a vehicle air conditioner having a casing having a passage through which air flows and a damper for opening and closing the opening of the casing,
The damper includes a shielding plate for closing the opening;
A rotating shaft provided on the shielding plate and rotatably supporting the shielding plate with respect to the casing;
A sealing member made of a rubber material that is provided at a peripheral portion of the shielding plate and is in contact with a sealing surface of the casing formed at a peripheral edge of the opening;
A plurality of ribs provided on the shielding plate;
A vibration isolating member provided between the adjacent ribs;
A vehicle air conditioner characterized by comprising:

Images