JP2007055370A - Vehicular air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of an air conditioner by preventing a driving side link member and a driven side link member from separating from each other while receiving a large load without structuring both link members from high strength material, when a blow-off directing switching door is rotated by a link mechanism. <P>SOLUTION: A slit 102b is formed on the driving side link member 102. On a first driven side link member 104, a pin 104c inserted in the slit 102b is formed. An extending portion 104d larger than the width of the slit 102b is formed at a tip end portion of the pin 104c. While the pin 104c is inserted in the slit 102b, the extending portion 104d is engaged with an peripheral edge portion of the slit 102b, thereby preventing the pin 104c from coming off from the slit 102b and separating. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner mounted on, for example, an automobile, and particularly relates to a technical field of a structure in which a door disposed in an air flow path of a casing of the air conditioner is opened and closed by a link mechanism. .

  Conventionally, as this type of vehicle air conditioner, the air flow path of the casing is branched into two in the middle, the cooling heat exchanger is disposed in one of these branch passages, and the heating heat exchanger is disposed in the other Is known (see, for example, Patent Document 1). In the air conditioner of Patent Document 1, a temperature adjustment door is disposed in the air flow path, and the amount of air flowing through the air flow path in which the cooling heat exchanger is disposed by the temperature adjustment door, The amount of air passing through the air flow path provided with the heat exchanger is changed. Further, the casing is provided with a face outlet and a foot outlet to which the downstream end of the air flow path is connected. These air outlets are selectively opened and closed by an air outlet direction switching door provided in the air flow path, so that the air outlet mode can be changed.

  The temperature control door and the blowing direction switching door are each provided with a rotation shaft that penetrates the side wall of the casing. On the side wall of the casing, a motor actuator that generates operating force for the temperature adjusting door and the blowing direction switching door, and a link mechanism that transmits the operating force by the motor actuator to the temperature adjusting door and the blowing direction switching door are disposed. ing.

  The link mechanism includes a drive side link member on the side to which the output shaft of the motor actuator is connected, and a driven side link member on the side to which the temperature adjustment door and the blowing direction switching door are connected. A pin as a driven side transmission portion formed on the driven side link member is engaged with a peripheral portion of a groove as a drive side transmission portion formed on the drive side link member. Due to the engagement between the peripheral edge of the groove and the pin, the operating force applied from the motor actuator to the drive side link member is transmitted to the temperature adjusting door and the blow direction switching door via the driven side link member, and the door rotates. The air flow path is opened and closed by rotating around an axis.

Further, in general, in a vehicle air conditioner, an operation wire or the like in which an occupant is connected to a drive side link member without using a motor actuator as in Patent Document 1 for the temperature control door and the blowing direction switching door as described above. Opening and closing is also performed by operating (see, for example, Patent Document 2). In the air conditioner of Patent Document 2, the occupant's operating force is directly applied to the drive side link member via the operation wire.
JP 2003-34125 A JP 2001-347824 A

  However, in the vehicle air conditioners such as Patent Documents 1 and 2, when a large air volume is required due to the temperature state in the passenger compartment or the use state of the passenger, the air volume in the air flow path of the casing increases. As the air pressure increases, the wind pressure received by the temperature control door and the blowout direction switching door increases. When these doors receive a large wind pressure, the force required for rotation increases, so when the operating force is transmitted to the doors via the drive side link member and the driven side link member, the drive side link member and the driven side link are transmitted from the door. A large reaction force acts on the members, and the load applied to these link members increases.

  Further, in the vehicle air conditioner disclosed in Patent Document 2, an occupant may suddenly operate the operation wire with a large force in an attempt to quickly adjust the temperature or switch the mode. When such an operation is performed, the load applied to the drive side link member and the driven side link member increases.

  As described above, when the load applied to the drive side link member and the driven side link member increases, these link members cannot withstand the load and are deformed. Due to the deformation of the link member, the pin of the driven side link member may be detached from the groove of the drive side link member, and the operation force may not be transmitted to the temperature adjustment door or the blowing direction switching door.

  In order to cope with this problem, it is conceivable that each link member is made of a high-strength material. However, a high-strength material is generally expensive, which increases the cost of each link member. Will soar.

  The present invention has been made in view of such points, and an object of the present invention is to provide a drive-side link member when a door disposed in an air flow path of a casing is rotated by a link mechanism. In addition, it is possible to prevent the two link members from being separated from each other under a large load without constituting the driven side link member with a high-strength material, thereby reducing the cost of the air conditioner. .

  In order to achieve the above object, in the present invention, at least one link member of the drive side link member and the driven side link member is engaged with the other link member to prevent the both link members from being detached. A part was provided.

  Specifically, in the first aspect of the present invention, a casing having an air flow path, and the air flow path arranged around the rotation shaft supported by the casing and opened and closed are opened and closed. A vehicle air conditioner including a door and a link mechanism that transmits an operation force to the door and rotates the door around a rotation axis. The link mechanism is driven on the side to which the operation force is applied. A side link member and a driven side link member to which the door is connected, and the drive side transmission portion provided in the drive side link member is related to the driven side transmission portion provided in the driven side link member. By combining, the operation force applied to the drive side link member is configured to be transmitted to the driven side link member, and at least one of the drive side link member and the driven side link member is Engaged with the other link member A structure in which engaging portion and the driving side transmission unit and the driven side transmission unit is suppressed to withdrawal is provided.

  According to this configuration, the operating force of the door applied to the drive side link member is transmitted to the driven side link member via the drive side transmission unit and the driven side transmission unit, and the door is moved by the movement of the driven side link member. The air channel is opened and closed by rotating around the rotation axis. When the amount of air flowing through the air flow path is large, or when the occupant suddenly operates the door operation wire with a large force, if the load on the drive side link member and the driven side link member increases, these link members are deformed. . At this time, the engaging portion of one link member is engaged with the other link member, and the drive side transmission portion and the driven side transmission portion are prevented from being separated.

  According to a second aspect of the present invention, in the first aspect of the invention, the drive side transmission portion is configured by a slit provided in the drive side link member, and the driven side transmission portion projects from the driven side link member and is inserted into the slit. Suppose that it is comprised by the insertion part made.

  According to this configuration, when the drive-side link member to which the operating force is applied moves and the slit is displaced, the insertion portion of the driven-side link member is displaced in contact with the peripheral edge of the slit, and the driven-side link member is displaced. Moves along a path corresponding to the shape of the slit. In this case, the drive side transmission unit and the driven side transmission unit are prevented from separating.

  According to a third aspect of the present invention, in the second aspect of the present invention, the engaging portion is provided at the distal end portion of the insertion portion, and is constituted by an extending portion that extends from the slit and extends larger than the width of the slit. It shall be.

  According to this configuration, when the load applied to the drive side link member and the driven side link member is increased, the extension portion is engaged with the peripheral edge portion of the slit, thereby preventing the insertion portion from coming out of the slit. Thereby, it is suppressed that a drive side transmission part and a driven side transmission part detach | leave.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the engaging portion is formed of a claw portion provided at the distal end portion of the insertion portion and formed so as to protrude from the slit.

  According to this configuration, when the load applied to the drive side link member and the driven side link member increases, the insertion portion is prevented from coming out of the slit by engaging the claw portion with the peripheral edge portion of the slit. The drive side transmission unit and the driven side transmission unit are prevented from separating.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the claw portion is formed so as to be positioned inward of the slit toward the tip end side of the claw portion.

  According to this configuration, when the drive side link member and the driven side link member are assembled at the time of manufacture, the claw portion can be easily inserted into the slit from the tip side.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, the engaging portion is formed in a hook shape that is hooked to the peripheral edge portion of the other link member.

  According to this configuration, the engaging portion can be engaged with the other link member only by hooking the engaging portion of one link member to the peripheral edge portion of the other link member at the time of manufacturing. . And when the load concerning a drive side link member and a driven side link member increases, an engaging part is caught in the peripheral part of the other link member, and a drive side transmission part and a driven side transmission part separate | separate. Deterred.

  In the invention of claim 7, in any one of claims 1 to 6, the link member is made of resin.

  According to this configuration, a link member having a complicated shape can be obtained easily and at low cost. In this case, for example, even if the temperature around the air conditioner rises in the interior of the vehicle left in the sun and the resin constituting the link member softens and becomes easily deformed, the drive side transmission unit and the driven side transmission The separation from the department is deterred.

  According to the first aspect of the present invention, at least one of the drive side link member and the driven side link member is provided with the engagement portion that engages with the other link member, and the drive side transmission portion and the driven side transmission portion are provided by this engagement portion. The door can be reliably operated even when a large load is applied to the link member, even if the link member is not made of a high-strength material. The cost of the apparatus can be reduced.

  According to the second aspect of the present invention, the insertion portion formed in the driven side link member is inserted into the slit formed in the drive side link member and the operating force is transmitted, so that the movement of the driven side link member is performed according to the shape of the slit. Can be set easily. In this case, the door can be reliably operated in a state where a large load is applied to the link member.

  According to the invention of claim 3, by engaging the extending portion provided at the distal end portion of the insertion portion with the peripheral portion of the slit, the door can be reliably operated in a state where a large load is applied to the link member. it can.

  According to the invention of claim 4, by engaging the claw portion provided at the distal end portion of the insertion portion with the peripheral portion of the slit, the door can be reliably operated in a state where a large load is applied to the link member. .

  According to the fifth aspect of the present invention, since the tip end side of the claw portion is formed inward of the slit, the drive side link member and the driven side link member can be easily assembled.

  According to invention of Claim 6, since the engaging part was made into the hook shape, it can be made to engage easily only by hooking an engaging part on the peripheral part of the link member of the other party at the time of manufacture. And when the load concerning a drive side link member and a driven side link member increases, the engaging part will be in the state caught on the peripheral part of the other link member, and a door can be operated reliably.

  According to the invention of claim 7, when the link member is made of resin and the link member is easily obtained at low cost, the temperature around the air conditioner becomes high and the resin constituting the link member is softened. Even if it becomes easier to deform, the door can be operated reliably.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 2 shows a state in which the vehicle air conditioner 1 according to Embodiment 1 of the present invention is disposed in an instrument panel 2 provided in the front part of the interior of the automobile. This automobile is a so-called right-hand drive vehicle in which a driver's seat and a passenger seat are provided on the right and left sides of the vehicle, respectively. In the description of this embodiment, for convenience of explanation, the left side in the vehicle width direction is simply referred to as “left”, and the right side in the vehicle width direction is simply referred to as “right”.

  As shown in FIG. 3, the air conditioner 1 includes a blower unit 3 that blows air for air conditioning, an air conditioner unit 4 that introduces air blown from the blower unit 3 into conditioned air, and the air conditioner unit. 4 and an intermediate duct 5 for sending air for air conditioning blown from the blower unit 3.

  The air conditioning unit 4 is disposed at a substantially central portion in the left-right direction in the instrument panel 2, while the air blowing unit 3 is disposed in front of the passenger seat while being spaced apart to the left with respect to the air conditioning unit 4. . Further, the lower end of the blower unit 3 is positioned above the lower end of the air conditioning unit 4 so as to ensure a wide foot space for the passenger on the passenger seat.

  The blower unit 3 includes a casing 6 that is divided into two in the left-right direction at a substantially central portion in the left-right direction, and these are integrated using fasteners or the like. The upper half of the casing 6 is used as an air intake 7 for taking in air for air conditioning into the blower unit 3, while the remaining part is used for blowing air into the air conditioning unit 4. Part 8. An air flow path S extending from the air intake portion 7 to the blower portion 8 is provided in the casing 6, and the air-conditioning air introduced from the air intake portion 7 flows through the air flow path S. Yes.

  An air intake 10 for taking in air outside the passenger compartment is formed on the front side of the vehicle above the air intake portion 7, and an air intake 11 for taking in air in the passenger compartment is formed on the rear side of the vehicle. Yes. Both intakes 10 and 11 are connected to the upstream end of the air flow path S and are selectively opened and closed by an inside / outside air switching door 9. The inside / outside air switching door 9 is disposed in the air flow path S, and includes a rotating shaft 12 extending in the vehicle width direction and a closing portion 13 extending from the rotating shaft 12 in one radial direction. ing. The rotating shaft 12 passes through the right side wall portion of the casing 6. An inside / outside air switching motor actuator 15 and an inside / outside air switching link mechanism 16 are disposed on the right side wall portion of the casing 6.

  The motor actuator 15 is fastened and fixed to a boss (not shown) projecting from the right side wall portion of the casing 6. The inside / outside air switching link mechanism 16 includes a drive side link member 17 to which the output shaft of the motor actuator 15 is coupled, and a driven side link member 18 to which the rotation shaft 12 of the inside / outside air switching door 9 is coupled. It consists of The driving side link member 17 and the driven side link member 18 are formed by molding a resin material such as polypropylene. Thus, by making the drive side link member 17 and the driven side link member 18 made of resin, the link members 17 and 18 having complicated shapes can be obtained easily and at low cost.

  When the operating force by the motor actuator 15 is transmitted to the inside / outside air switching door 9 through the driving side link member 17 and the driven side link member 18, the inside / outside air switching door 9 rotates around the rotation shaft 12, and the outside air removal is performed. One of the inlet 10 and the inside air intake 11 is closed by the inside / outside air switching door 9 while the other is opened. In other words, when the outside air inlet 10 is fully opened by the inside / outside air switching door 9, the inside air inlet 10 is fully closed, and the outside air intake mode for taking in only air outside the passenger compartment is set. On the other hand, when the outside air inlet 10 is fully closed, the inside air inlet 11 is fully opened, and the inside air circulation mode for taking in only the air in the passenger compartment is set. Note that a grid-like grill 14 is provided at the inside air inlet 11.

  On the other hand, a filter disposing portion 21 in which a filter 20 for filtering air taken in from the outside air intake port 10 or the inside air intake port 11 is disposed at the lower portion of the air intake portion 7. A centrifugal multi-blade fan 23 is disposed below the filter disposition portion 21 with its rotational axis directed in the vertical direction. Further, below the fan 23, the fan 23 is driven. The fan drive motor 24 is disposed. In addition, the arrow in FIG. 3 has shown the flow of air.

  The left end portion of the intermediate duct 5 is fixed to the right side wall portion of the casing 6 in the air blowing portion 8, and the left end portion of the intermediate duct 5 passes through an opening (not shown) formed in the right side wall portion of the casing 6. The air flow path S in the casing 6 is in communication. The intermediate duct 5 is formed to extend obliquely downward from the left end portion toward the lower end portion of the air conditioning unit 4. The right end of the intermediate duct 5 is opened at the lower end of the casing 6 of the air conditioning unit 4 and connected to an inlet 25 (shown in phantom lines in FIG. 4) for introducing air for air conditioning into the casing 6. Yes. A control circuit 26 for controlling the rotational speed of the fan drive motor 24 is disposed on the upper wall of the intermediate duct 5, and this control circuit 26 projects into the intermediate duct 5.

  The casing 30 of the air conditioning unit 4 is long in the vertical direction as a whole, and is larger than the casing 6 of the blower unit 3. The casing 30 of the air conditioning unit 4 is divided into two in the left-right direction, like the casing 6 of the blower unit 3.

  An air flow path R extending upward from the introduction port 25 is provided in the casing 30. As shown in FIG. 4, the upstream side of the air flow path R is constituted by a cooling passage 33 that extends from the inlet 25 to a substantially central portion in the vertical direction of the casing 30. The air-conditioning air introduced from the introduction port 25 changes its direction upward in the cooling passage 33 and flows.

  In the middle of the cooling passage 33 in the vertical direction, an evaporator 34 as a cooling heat exchanger that cools the air-conditioning air flowing through the cooling passage 33 through the cooling passage 33 is disposed across the cooling passage 33. . The evaporator 34 constitutes one element of the refrigeration cycle, and although not shown in the figure, for example, a large number of tubes formed of a thin metal plate such as aluminum are laminated so as to extend in the same direction, and adjacent tubes are stacked. In addition, corrugated fins formed of a thin metal plate are also interposed. A low-temperature refrigerant circulates in the tube of the evaporator 34, and the air passing through the evaporator 34 is cooled by this refrigerant.

  The evaporator 34 is disposed obliquely so that the direction in which the tube extends substantially coincides with the vehicle front-rear direction and the vehicle rear side of the evaporator 34 is located above the front side. This is because the condensed water generated in the evaporator 34 flows to the drain portion 35 provided in front of the casing 30 in the vehicle, and the first temperature adjusting door 48 described later is disposed above the evaporator 34. This is to secure the space. Note that all the air-conditioning air introduced into the casing 30 passes through the evaporator 34.

  The downstream end of the cooling passage 33 is branched into two in the vehicle longitudinal direction, and the downstream end on the vehicle rear side extends upward from the downstream end on the front side. A first cold air outlet 37 is formed at the downstream end of the cooling passage 33 on the front side of the vehicle, and a second cold air outlet 38 is formed at the downstream end of the rear side of the vehicle. A central partition 40 is provided between the first cold air outlet 37 and the second cold air outlet 38 to divide the inside of the casing 30 into the cooling passage 33 and the space above the cooling passage 33.

  A heating passage 41 constituting an intermediate portion in the air flow direction of the air flow path R is connected to the first cold air outlet 37. The heating passage 41 extends obliquely upward toward the rear side of the vehicle as a whole above the central partition wall 40. A heater core 43 serving as a heat exchanger for heating that passes and heats cold air flowing through the heating passage 41 is disposed in the middle of the heating passage 41 in the vertical direction so as to cross the heating passage 41. Although the heater core 43 is smaller than the evaporator 34 and is not shown, fins are interposed between a number of tubes as in the evaporator 34. The cooling water of the engine is constantly circulated through the tube of the heater core 43, and the air passing through the heater core 43 is heated by the cooling water.

  The heater core 43 is disposed obliquely so that the direction in which the tube extends substantially coincides with the vehicle front-rear direction and the vehicle rear side of the heater core 43 is located below the front side. Therefore, the distance between the heater core 43 and the evaporator 34 increases as it goes to the vehicle front side. The rear end of the heater core 43 is supported by the central partition 40.

  Above the heater core 43, there is provided an upper partition wall 45 that divides the upper half of the casing 30 into the heating passage 41 and the space above it. A hot air outlet 46 formed at the downstream end of the heating passage 41 opens toward the rear of the vehicle between the rear end of the upper partition 45 and the rear end of the central partition 40. .

  In addition, an air mix space 65 constituting the downstream side of the air flow path R is provided above the second cold air outlet 38 on the vehicle rear side in the casing 30. The second cold air outlet 38 and the hot air outlet 46 are connected to the air mix space 65 so that the cold air and the hot air respectively flow from the second cold air outlet 38 and the hot air outlet 46. . The cold air and the warm air flowing into the air mix space 65 are mixed in the air mix space 65 to become conditioned air.

  As shown also in FIG. 3, face blowout ports 66 connected to the air mix space 65 extend in the vicinity of both ends in the left-right direction of the casing 30 on the upper wall portion of the casing 30 substantially directly above the air mix space 65. Are formed long in the left-right direction.

  The face air outlet 66 is provided with a center ventilator 81 and a side ventilator 82 (shown in FIG. 2) provided with conditioned air generated in the air mix space 65 at a substantially central portion in the left-right direction and both left and right ends of the instrument panel 2, respectively. Are divided into a center outlet 66a and a side outlet 66b.

  The center outlet 66a is connected to the center ventilator 81 by a center face duct (not shown) provided in the instrument panel 2. The side outlet 66b is connected to the side ventilator 82 by a side face duct (not shown) that is also provided in the instrument panel 2. The conditioned air is blown out from the center ventilator 81 and the side ventilator 82 toward the upper body of the occupant.

  Above the upper partition wall 45 in the casing 30, a defroster lead-out chamber 68 that forms the downstream side of the air flow path R is provided. A first opening 69 for allowing the conditioned air generated in the air mix space 65 to flow into the defroster outlet chamber 68 is provided between the rear end of the upper partition 45 and the upper wall of the casing 30. Yes. A defroster 85 and a demister 85a (shown in FIG. 2) provided on the instrument panel 2 with the conditioned air flowing into the defroster outlet chamber 68 on the upper wall portion of the casing 30 at a position near the vehicle front side above the defroster outlet chamber 68. The defroster blower outlet 70 for making it lead to is formed. That is, the defroster air outlet 70 is formed over substantially the entire left and right direction in a state where the upper wall portion of the casing 30 is separated from the center air outlet 66a and the side air outlet 66b toward the vehicle front side.

  The defroster outlet 70 is connected to a defroster 85 and a demister 85a by a defroster duct (not shown) provided in the instrument panel 2, and conditioned air is supplied from the defroster 85 and the demister 85a to the front window glass and the side door. It blows out toward the inner surface of the wind glass.

  A foot derivation chamber 71 that forms the downstream side of the air flow path R is formed on the vehicle front side of the defroster derivation chamber 68 in the casing 30, and a wall portion between the foot derivation chamber 71 and the defroster derivation chamber 68 is formed on the wall. A second opening 72 for allowing the conditioned air in the defroster outlet chamber 68 to flow into the foot outlet chamber 71 is formed. In addition, left and right foot outlets 73 are formed in the upper part of the left and right side walls of the casing 30 to guide the conditioned air in the foot derivation chamber 71 to the feet of the passengers in the driver seat and the passenger seat, respectively. Yes. That is, these left and right foot outlets 73 are respectively connected to left and right foot ducts 74 extending rearward and downward along the left and right side walls of the casing 30. And open at the feet of each passenger in the passenger seat. From the openings of these foot ducts 74, the conditioned air in the foot derivation chamber 73 blows out toward the feet of each occupant.

  Further, the foot duct 74 on the driver's seat side communicates with a connecting portion 75 connected to a rear seat duct (not shown) extending to the rear seat, and the air in the foot lead-out chamber 71 is at the foot of the rear seat occupant. Also comes to blow out.

  Near the downstream end of the air flow path R, a first blowing direction switching door 76 that opens and closes the center blowing portion 66a and the side blowing portion 66b simultaneously according to the blowing mode set by the occupant is provided. The first blowing direction switching door 76 includes a pivot shaft 86 extending in the left-right direction, a plate-shaped blocking portion 87 extending in one radial direction from the rotation shaft 86, and both surfaces of the blocking portion 87. And a sealing member 88 provided respectively. The left and right end portions of the rotation shaft 86 are supported on the left and right side walls of the casing 30. The left end portion of the rotation shaft 86 passes through the left side wall portion of the casing 30.

  The first blowing direction switching door 76 rotates around the rotation shaft 86 between a position where the center blowing portion 66a and the side blowing portion 66b are fully opened and a position where the center blowing portion 66b is fully closed. As shown in FIG. 4, when the first blowing direction switching door 76 fully opens the center blowing portion 66a and the side blowing portion 66b, the first opening 69 is fully closed, while not shown. When the first blowing direction switching door 76 makes the center blowing portion 66a and the side blowing portion 66b fully closed, the first opening 69 is fully opened.

  Near the downstream end of the air flow path R, a second blowing direction switching door 77 that opens and closes the defroster outlet 70 according to the blowing mode is provided. Similar to the first blow direction switching door 76, the second blow direction switching door 77 includes a pivot shaft 92, a closing portion 93, and a seal member 94 extending in the left-right direction. The left and right ends of the rotation shaft 92 are supported by the left and right side walls of the casing 30. The left end portion of the rotation shaft 92 passes through the left side wall portion of the casing 30.

  The second blowing direction switching door 77 rotates around the rotation shaft 92 between a position where the defroster outlet 70 is fully opened and a position where the defroster outlet 70 is fully closed. If the 2nd blowing direction switching door 77 makes the defroster blower outlet 70 into a full open state, the 2nd opening part 72 will be made into a fully closed state, On the other hand, as shown in FIG. When the air outlet 70 is fully closed, the second opening 72 is fully opened.

  As shown in FIG. 3, the blowing direction switching motor actuator 100 and the blowing direction switching link mechanism 101 are arranged on the upper portion of the left side wall portion of the casing 30. The motor actuator 100 is fastened and fixed to a boss (not shown) protruding from the left side wall, and is separated from the left side wall to the left. The blowing direction switching link mechanism 101 is disposed between the motor actuator 100 and the left side wall portion of the casing 30. In FIG. 1, the motor actuator 100 is omitted.

  As shown in FIG. 1, the link mechanism 101 is fixed to a drive-side link member 102 to which an output shaft (not shown) of the motor actuator 100 is connected, and a rotation shaft 86 of the first blowing direction switching door 76. The first door link member 103, the first driven link member 104 connected to the first blowing direction switching door 76 via the first door link member 103, and the rotation axis of the second blowing direction switching door 77. The second door link member 105 fixed to 92 and the second driven side link member 106 connected to the second blowing direction switching door 77 via the second door link member 105 are provided. The drive side link member 102, the first door link member 103, the first driven side link member 104, the second door link member 105, and the second driven side link member 106 are formed by molding a resin material such as polypropylene, for example. It is. The driving side link member 102 is positioned on the leftmost side, and the first driven side link member 104 and the second driven side link member 106 are positioned on the right side of the driving side link member 102, and the right side of the driven side link members 104, 106. The 1st door link member 103 and the 2nd door link member 105 are positioned in this.

  The drive side link member 102 is formed in a substantially semi-disc shape. In the vicinity of the center portion of the drive side link member 102, a connection hole 102a is formed, into which an output shaft (not shown) of the motor actuator 100 is inserted and connected together in a rotating manner. In the peripheral portion of the drive side link member 102, a first slit 102b is formed on one side in the circumferential direction, and a second slit 102c is formed on the other side in the circumferential direction. The first slit 102b and the second slit 102c are bent in the radial direction of the drive side link member 102 in the middle part of each longitudinal direction.

  The first door link member 103 is formed in a substantially linear shape. A first insertion hole 103 a into which the rotation shaft 86 of the first blowing direction switching door 76 is inserted is formed at one end of the first door link member 103, and the rotation shaft 86, the first door link member 103, Is integrated with the rotation. On the other end side of the first door link member 103, a first hole 103b extending in the longitudinal direction of the link member 103 is formed.

  The first driven side link member 104 is formed in an approximately L shape. A hole 104 a through which a fastening member 107 for attaching the link member 104 to the casing 30 is inserted is formed at a corner of the first driven side link member 104. The first driven side link member 104 is configured to rotate around the fastening member 107 while being attached to the casing 30 by the fastening member 107.

  One end pin of the first driven link member 104 is protruded from the first hole 103b of the first door link member 103, and the other end of the first link member 104 is inserted into the first slit 102b. The other side pin 104c as an insertion portion to be inserted protrudes. The tip of the other pin 104c protrudes from the first slit 102b in a state where the other pin 104c is completely inserted into the first slit 102b, and the tip of the pin 104c extends to both sides in the radial direction of the pin 104c. A substantially circular extending portion 104d extending toward the end is formed.

  As shown in FIG. 5, the dimension in the major axis direction of the extending portion 104d is set longer than the width of the first slit 102b, and in a state where the other side pin 104c is completely inserted into the first slit 102b, The extended portion 104d is engaged with the peripheral edge of the first slit 102b to prevent the other side pin 104c from coming off. On the other hand, the dimension of the extending portion 104d in the minor axis direction is set to be shorter than the width of the first slit 102b.

  Thus, when the drive side link member 102 is assembled to the first driven side link member 104 at the time of manufacture, first, as shown in FIG. 6, the major axis direction of the extended portion 104 d substantially coincides with the direction in which the first slit 102 b extends. After the first driven side link member 104 is positioned as described above, the extended portion 104d can be inserted into the first slit 102b by moving the first driven side link member 104 in the direction of the arrow shown in FIG. It becomes possible. And after inserting the other side pin 104c completely in the 1st slit 102b, the 1st driven side link member 104 is rotated until the major axis direction of the extension part 104d substantially corresponds with the width direction of the 1st slit 102b. Thus, the state shown in FIG. 5A is obtained, and the extension portion 104d prevents the other side pin 104c from coming off.

  As shown in FIG. 1, the second door link member 105 is formed in substantially the same shape as the first door link member 103, and has a second insertion hole 105a and a second hole portion 105b. Yes.

  The second driven side link member 106 is formed in a substantially linear shape. A hole 106 a through which a fastening member 108 for attaching the link member 106 to the casing 30 is inserted is formed at one end of the second driven side link member 106. The second driven side link member 106 rotates around the fastening member 108 while being attached to the casing 30 by the fastening member 108. At the other end portion of the second driven side link member 106, a one side pin 106b inserted into the second hole portion 105b is projected. A second pin 106c as an insertion portion to be inserted into the second slit 102c protrudes from a portion closer to the first pin 106b than the hole 106a of the second driven link member 106. The other side pin 106c is formed with a substantially elliptical extending portion 106d similar to the extending portion 104d of the first driven side link member 104. The extending portions 104d and 106d constitute the engaging portion of the present invention.

  When the motor actuator 100 is operated, an operating force is applied to the drive side link member 102, and the drive side link member 102 rotates. By the rotation of the drive side link member 102, the first slit 102b and the second slit 102c are displaced in the rotation direction. Due to the displacement of the first slit 102b, the other side pin 104c of the first driven side link member 104 is engaged and displaced with the peripheral edge of the first slit 102b, and the first driven side link member 104 has a shape of the first slit 102b. It will move by drawing a trajectory corresponding to. Due to the movement of the first driven side link member 104, the one side pin 104b engages with the peripheral edge of the first hole 103b and the first door link member 103 moves, whereby the first blowing direction switching door 76 is moved. Rotate. The drive side transmission part of this invention is comprised by the peripheral part of the said 1st slit 102b, and the driven side transmission part of this invention is comprised by the other side pin 104c.

  Further, due to the displacement of the second slit 102c, the other side pin 106c of the second driven side link member 106 is displaced by engaging with the peripheral edge of the second slit 102c, and the second driven side link member 106 is displaced by the second slit 102c. It moves by drawing a trajectory corresponding to the shape. By the movement of the second driven side link member 106, the one side pin 106b engages with the peripheral edge portion of the second hole portion 105b, and the second door link member 105 moves, whereby the second blowing direction switching door 77 is moved. Rotate. The driving side transmission portion of the present invention is configured by the peripheral edge portion of the second slit 102c, and the driven side transmission portion of the present invention is configured by the other side pin 106c.

  As described above, the other side pin 104c of the first driven side link member 104 and the other side pin 106c of the second driven side link member 106 are inserted into the first slit 102b and the second slit 102c of the driving side link member 102, respectively. Therefore, the movement of the first driven side link member 104 and the second driven side link member 106 can be easily set by the shape of the slits 102b and 102c.

  As shown in FIGS. 7 and 8, the center blowing portion 66a, the side blowing portion 66b, the defroster outlet 70, and the second opening portion are rotated by the rotation of the first blowing direction switching door 76 and the second blowing direction switching door 77. 72 is opened and closed, and the air conditioner 1 is in an arbitrary blowing mode such as a face mode, a defroster mode, and a foot mode.

  In the vicinity of the first cold air outlet 37 and the second cold air outlet 38 in the air flow path R of the casing 30, a first temperature adjustment that opens and closes the air outlets 37 and 38 according to the room temperature set by the passenger. A door 48 and a second temperature control door 49 are disposed.

  The first temperature adjustment door 48 is a butterfly door including a rotation shaft 58 and two closing portions 59 extending on both sides in the radial direction of the rotation shaft 58. Seal members 61 are disposed on the peripheral edge of the closing portion 59. The left and right ends of the rotation shaft 58 of the first temperature adjusting door 48 are supported by the left and right side walls of the casing 30. The left end portion of the rotation shaft 58 passes through the left side wall portion of the casing 30.

  The second temperature adjusting door 49 is a butterfly door including a rotating shaft 50 and a closing portion 51 extending on both sides in the radial direction of the rotating shaft 50. Sealing members 56 are disposed on the opposite sides of the peripheral portion of the closing portion 51. The left and right ends of the rotation shaft 50 of the second temperature adjustment door 49 are supported by the left and right side walls of the casing 30. The left end portion of the rotation shaft 50 penetrates the left wall portion of the casing 30.

  As shown in FIG. 3, a temperature adjustment motor actuator 110 and a temperature adjustment link mechanism 111 are arranged on the upper portion of the left side wall portion of the casing 30. The motor actuator 110 and the temperature adjusting link mechanism 111 are configured in the same manner as the blowing direction switching motor actuator 10 and the blowing direction switching link mechanism 101.

  Next, the flow of air in the air conditioner 1 configured as described above will be described. First, the air-conditioning air blown by the fan 23 of the blower unit 3 passes through the intermediate duct 5 from the inlet 25 to the air-conditioning unit 4. Is introduced into the casing 30.

  Subsequently, the air introduced into the casing 30 of the air conditioning unit 4 flows upward immediately after the introduction, passes through the evaporator 34, and is cooled by the evaporator 34 at this time. And if the 1st temperature control door 48 and the 2nd temperature control door 49 are an open state, some cold winds which passed the evaporator 34 will flow in into the heating channel | path 41 from the 1st cold wind blower outlet 37, and the remainder is 2nd. The cold air outlet 38 bypasses the heating passage 41 and flows into the air mix space 65.

  The cold air that has flowed into the heating passage 41 flows obliquely upward toward the rear side of the vehicle, passes through the heater core 43, and is heated by the heater core 43 at this time. The warm air heated by the heater core 43 flows into the air mix space 65 from the warm air outlet 46.

  The flow rate ratio between the cool air and the warm air flowing into the air mix space 65 is determined by adjusting the opening degree of the first cool air outlet 37 by the first temperature adjusting door 48 and the second cold air outlet 38 by the second temperature adjusting door 49. It is determined by adjusting the opening degree. By changing the flow rate ratio between the cold air and the hot air, the temperature of the conditioned air generated in the air mix space 65 can be changed.

  For example, when the air conditioner 1 is set to the 1/2 hot mode in which the opening degree of each of the first temperature adjustment door 48 and the second temperature adjustment door 49 is about half, the air mix space 65 is placed in the air mix space 65 as described above. Cold air flows from the second cold air outlet 38 and hot air flows from the hot air outlet 46. In the 1/2 hot mode, the first blowing direction switching door 76 is turned to the face mode until the center blowing portion 66a and the side blowing portion 66b are fully opened and the first opening 69 is fully closed. The conditioned air generated in the space 65 is led out from the center outlet 66a and the side outlet 66b.

  Further, when the occupant desires rapid cooling, it is switched to the full cold mode shown in FIG. 4 and the first temperature adjusting door 48 is rotated until the first cold air outlet 37 is fully closed. The second temperature adjusting door 49 is rotated until the second cold air outlet 38 is fully opened. As a result, only the cold air flows into the air mix space 65 from the second cold air outlet 38. At the time of the full cold mode, the first blowing direction switching door 76 is simultaneously rotated until the face outlet 66 is fully opened and the first opening 69 is fully closed to be in the face mode. Thereby, the cold wind which flowed into the air mix space 65 from the 2nd cold wind blower outlet 38 flows through this air mix space 65 linearly upwards, and is derived | led-out from the center blowing part 66a and the side blowing part 66b.

  In addition, when the occupant desires rapid heating, although not shown in the drawing, it is switched to the full hot mode and the first temperature adjusting door 48 is rotated until the first cold air outlet 37 is fully opened, The second temperature adjusting door 49 is rotated until the second cold air outlet 38 is fully closed. As a result, only warm air flows into the air mix space 65 from the warm air outlet 46. At the same time in the full hot mode, the first air outlet switching door 76 is rotated until the face air outlet 66 is fully closed and the first opening 69 is fully opened, and the second air outlet direction switching door 77 is connected to the defroster air outlet 70. The second opening 72 is rotated until the second opening 72 is fully closed. Thereby, the warm air flowing into the air mix space 65 from the warm air outlet 46 flows into the defroster derivation chamber 68 from the air mix space 65 and is then derived from the defroster outlet 70. In this full hot mode, the second blowing direction switching door 77 is rotated to an intermediate position between the defroster outlet 70 and the second opening 72, and conditioned air is supplied to the defroster outlet 70 and the foot outlet 73. You may make it derive | lead-out from.

  In the full cold mode and the full hot mode, generally, the air volume is set to the maximum or close to it, and the air volume in the air flow path R of the air conditioning unit 4 is increased. Due to the increase in the air volume, the wind pressure received by the first blowing direction switching door 76 and the second blowing direction switching door 77 increases. When these doors 76 and 77 receive a large wind pressure, the force required for rotation increases, so that the operating force of the motor actuator 100 is applied to the drive side link member 102, the first driven side link member 104, and the second link member 106. Via the doors 76, 77 to the drive side link member 102, the first driven side link member 104, and the second driven side link member 106 when transmitted to the first blow direction door 76 and the second blow direction switching door 77. A large reaction force acts, and the load applied to these link members 102, 104, 106 increases. In addition to this, in particular, in the situation where the full cold mode is set, the temperature in the passenger compartment often becomes a temperature that greatly exceeds, for example, 40 ° C. after the vehicle is left in the hot sun. In this case, the temperature around the air conditioner 1 rises, and the resin constituting the link members 102, 104, and 106 is softened and easily deformed.

  At this time, the extended portion 104d of the first driven side link member 104 engages with the peripheral edge of the first slit 102b of the drive side link member 102, and the other side pin 104c is detached from the first slit 102b. Therefore, even if the driving side link member 102 and the first driven side link member 104 are deformed, it is possible to transmit the operation force by the blowing direction switching motor actuator 100 to the first blowing direction switching door 76. become. Similarly, since the extending portion 106d of the second driven side link member 106 is engaged with the peripheral edge of the second slit 102c of the driving side link member 102, the operating force by the blowing direction switching motor actuator 100 is reduced. It is possible to transmit to the second blowing direction switching door 77.

  As described above, according to the vehicle air conditioner 1 according to this embodiment, the extending portions 104d and 106d formed on the first driven side link member 104 and the second driven side link member 106 are connected to the drive side link member. Since the other side pins 104c and 106c are prevented from being detached from the first slit 102b and the second slit 102c by being engaged with the peripheral portions of the first slit 102b and the second slit 102c, respectively, the driving side link member 102, the first driven-side link member 104 and the second driven-side link member 106 are not made of a high-strength resin material, and the first blow-out direction is obtained when a large load is applied to the link members 102, 104, and 106. The switching door 76 and the second blowing direction switching door 77 can be reliably operated, and the cost of the air conditioner 1 can be reduced.

  In the above-described embodiment, the case where the first blowing direction switching door 76 and the second blowing direction switching door 77 are automatically opened and closed by the operation force of the motor actuator 100 has been described. An air conditioner configured such that the actuator 100 is omitted and the first blowing direction switching door 76 and the second blowing direction switching door 77 are manually opened and closed by an operating force (not shown) operated by an occupant. Can be applied. One end of the operation wire is connected to, for example, an operation dial or an operation lever of the instrument panel 2, and the other end is connected to the drive side link member 102, and an operation force by the occupant is applied to the drive side link member 102. It is designed to be granted directly. In this manual air conditioner, an occupant may suddenly operate the operation wire with a large force in an attempt to quickly switch the blowing mode. When such an operation is performed, the load applied to the driving side link member 102 and the driven side link members 104 and 106 increases. As described above, the other side pins 104c and 106c are connected to the first slit 102b. Since the release from the second slit 102c is suppressed, the first blowing direction switching door 76 and the second blowing direction switching door 77 can be reliably operated by the blowing direction switching link mechanism 101.

  In the above embodiment, the other side pin 104c is the insertion portion of the present invention, and the extension portion 104d formed on the other side pin 104c is the engagement portion of the present invention. As in Modification 1 shown in FIG. 10, the insertion portion is configured by four pieces 104e protruding from the first driven link member 104, and the engaging portion is formed by a claw portion 104f formed at the tip of the piece 104e. You may make it comprise. The piece 104e is arranged to draw a circle when viewed from the front end side in the protruding direction. A gap is formed between the adjacent pieces 104e, and the distal end side of the pieces 104e can be elastically deformed toward the space T surrounded by the pieces 104e. The claw portion 104f protrudes outward from the space T. As shown in FIG. 11B, the protruding height of the claw portion 104f is such that the claw portion 104f is engaged with the peripheral edge portion of the first slit 102b in a state where the piece portion 104e is completely inserted into the first slit 102b. It is set to be. Further, the claw portion 104f is formed so as to be positioned inward of the first slit 102b as it goes to the tip side.

  When the first driven-side link member 104 and the drive-side link member 102 of Modification 1 are assembled, the claw portion 104f is pushed into the first slit 102b from the distal end side. At this time, since the claw portion 104f is formed so as to be located inward of the first slit 102b as it goes to the distal end side, insertion into the first slit 102b can be easily performed. When the claw portion 104f is pushed into the first slit 102b, the claw portion 104f is pushed from the peripheral edge of the first slit 102b to the inside of the space T, and the piece portion 104e is elastically deformed to the inside of the space T. The claw portion 104f passes through the first slit 102b and protrudes from the first slit 102b. When the claw portion 104f protrudes from the first slit 102b, the piece portion 104e is restored, the claw portion 104f is engaged with the peripheral edge portion of the first slit 102b, and the piece portion 104e is prevented from being detached from the first slit 102b. Is done.

  In the first modification, since the claw portion 104f is engaged with the peripheral edge portion of the first slit 102b to prevent the piece portion 104e from being detached from the first slit 102b, the first blowing direction switching door 76 is prevented. Can be operated reliably. Moreover, since the front end side of the claw portion 104f is positioned inward of the first slit 102b, the driving side link member 102 and the first driven side link member 104 can be easily assembled. Further, the second driven side link member 106 may also be provided with the above-mentioned one part and claw part.

  Further, as in Modification 2 shown in FIG. 10, a hook portion 104g having a shape that is hooked on the peripheral edge portion of the drive side link member 102 is provided at one edge portion of the first driven side link member 104, and the hook portion 104g is connected to the main portion. It is good also as an engaging part of invention. The drive-side link member 102 is formed with a first groove 102d and a second groove (not shown) instead of the first slit 102b and the second slit 102c, and the peripheral edges of the first groove 102d and the second groove The part constitutes the drive side transmission part of the present invention. The first groove portion 102d and the second groove portion are open to the first driven side link member 104 and the second driven side link member 106 side. The drive side link member 102 is formed with protrusions 102e corresponding to the first groove 102d and the second groove 102e. As shown in FIG. 10B, the other pin 104c of the first driven link member 104 is inserted into the first groove 102d, and the other pin 106c of the second driven link member 106 is inserted into the second groove. It has come to be. Further, a flange 102 f is formed on the peripheral edge of the drive side link member 102. The hook portion 104g engages with the flange 102f, and the other side pin 104c is prevented from being detached from the first groove portion 102d.

  When assembling the first driven side link member 104 and the drive side link member 102 of Modification 2, it is only necessary to hook the hook portion 104g on the flange 102f, and the assembling work can be performed easily.

  In the second modification, the hook portion 104g is hooked on the flange 102f to prevent the other side pin 104c from being detached from the first groove portion 102d, so that the first blowing direction switching door 76 is reliably operated. Can do. The second driven link member 106 may also be provided with a hook portion.

  In the above-described embodiment, the case where the first driven side link member 104 and the second driven side link member 106 are provided with the engaging portions has been described. However, the engaging portions may be provided on the driving side link member 102. Good.

  Further, the engaging portion of the present invention may be provided in each link member of the temperature adjusting link mechanism 111 or the inside / outside air switching link mechanism 16 in addition to the blowing direction switching link mechanism 101.

  Moreover, although this embodiment demonstrated the case where this invention was applied to the air conditioner 1 with which the ventilation unit 3 and the air conditioning unit 4 were provided along with the left-right direction, this invention is a fan unit and an air conditioning unit. The present invention can also be applied to an integrated air conditioner.

  As described above, the vehicle air conditioner according to the present invention can be applied, for example, when the blow direction switching door is operated by the link mechanism.

It is the side view which looked at the air-conditioning unit upper part of the air-conditioning apparatus which concerns on embodiment of this invention from the left side. It is a perspective view of the instrument panel by which the air conditioner was arrange | positioned. It is the figure which looked at the air conditioner from the vehicle rear side. It is the schematic explaining the internal structure of an air conditioning unit. (A) is a perspective view which expands and shows the engaging part of a drive side link member and a 1st driven side link member, (b) is sectional drawing in the AA of FIG. 5 (a). is there. It is a perspective view which expands and shows the state before attaching a 1st driven side link member to a drive side link member. FIG. 2 is a view corresponding to FIG. 1 in a state where a drive side link member is rotated forward of the vehicle. FIG. 8 is a view corresponding to FIG. 1 in a state where the drive side link member is further rotated forward from the state shown in FIG. 7. In connection with the first modification of the embodiment, (a) is an enlarged perspective view showing the first driven side link member, and (b) is a view corresponding to FIG. 5 (b). FIG. 5A is a diagram corresponding to FIG. 5A and FIG. 5B is a diagram corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 3 Blower unit 4 Air conditioning unit 5 Intermediate duct 30 Casing 76 1st blowing direction switching door 77 2nd blowing direction switching door 100 Blowing direction switching motor actuator 101 Blowing direction switching link mechanism 102 Drive side link member 102b 1st Slit 102c Second slit 104 First driven side link member 104c Other side pin 104d Extension part 106 Second driven side link member 104c Other side pin 104d Extension part 104f Claw part 104g Hook part R Air flow path

Claims (7)

A casing having an air flow path, a door disposed in the air flow path and pivoting about a pivot shaft supported by the casing to open and close the air flow path; A vehicle air conditioner comprising a link mechanism for rotating the door around a rotation axis,
The link mechanism includes a drive-side link member on a side to which an operating force is applied and a driven-side link member on a side to which the door is connected, and includes a drive-side transmission unit provided on the drive-side link member. An operation force applied to the drive side link member is configured to be transmitted to the driven side link member by engaging with a driven side transmission portion provided on the driven side link member.
At least one link member of the drive side link member and the driven side link member has an engagement portion that engages with the other link member and prevents the drive side transmission portion and the driven side transmission portion from being detached. A vehicle air conditioner characterized in that it is provided. The vehicle air conditioner according to claim 1,
The drive side transmission part is composed of a slit provided in the drive side link member,
The driven-side transmission unit includes an insertion unit that protrudes from the driven-side link member and is inserted into the slit. In the vehicle air conditioner according to claim 2,
The vehicle air conditioner is characterized in that the engaging portion is provided at the distal end portion of the insertion portion, and is configured to extend from the slit so as to extend larger than the width of the slit. In the vehicle air conditioner according to claim 2,
The vehicle air conditioner is characterized in that the engaging portion is formed of a claw portion provided at the distal end portion of the insertion portion and protruding from the slit. The vehicle air conditioner according to claim 4,
The vehicular air conditioner is characterized in that the claw portion is formed so as to be located inward of the slit as it goes to a tip side of the claw portion. The vehicle air conditioner according to claim 1,
The vehicle air conditioner characterized in that the engaging portion is formed in a hook shape that is hooked to the peripheral edge of the other link member. In the vehicle air conditioner according to any one of claims 1 to 6,
A vehicle air conditioner characterized in that the link member is made of resin.

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