JP5120292B2 - Air-conditioning blower - Google Patents

Description

  The present invention relates to an air-conditioning air blowing device that is used in an air-conditioning device mounted on an automobile or the like, and that blows air-conditioned air into a vehicle from a blow-out port provided at a predetermined position facing a vehicle compartment.

The automobile is provided with an air conditioner for adjusting the temperature inside the vehicle according to the preference of the passenger. This air conditioner blows and supplies air conditioned air from an air conditioned air supply source such as an air conditioning unit into a vehicle from a blow outlet provided at a predetermined position facing the vehicle compartment by using an air conditioned air blowing device.
Such an air-conditioning air blowing device selectively sucks air inside or outside the vehicle, adjusts it to an appropriate temperature by a cooler or heater of the air-conditioning air supply source, and then branches into a plurality of ducts. A plurality of outlets attached to the opposite wall of the passenger compartment are blown out into the vehicle.

  For example, the air-conditioning air blowing device for the driver's seat in each air outlet is arranged at a position that is easily operated by the driver, and is formed so that air-conditioned air can be blown out in an appropriate direction. Air-conditioned air can be blown out in the direction preferred by the passenger in the passenger's seat by being operated by the passenger. An example of such an air-conditioning air blowing device is disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 11-034561).

  By the way, the conditioned air blown out from each of these conditioned air blowing devices is branched and supplied after being adjusted to an appropriate temperature from an conditioned air supply source such as an air conditioning unit, so the conditioned air at any outlet is the same. Hold temperature. For this reason, even if the required temperature differs between the driver's seat passenger and the passenger seat passenger, this cannot be individually adjusted. Therefore, the air from the cooler in the air-conditioning air blowing device is branched in advance into two conditioned air adjustment paths, a heater is provided for each branch adjustment path, and the temperature of the conditioned air is increased for each branch adjustment path. By adjusting the amount, the conditioned air having a temperature satisfying the requirements of the driver's occupant and the passenger's occupant may be blown out. An example of such a left and right independent temperature control air conditioner is disclosed in Patent Document 2 (Japanese Patent Laid-Open No. 10-119545).

  Note that an air blowing device for a defroster disclosed in Patent Document 3 (Japanese Utility Model Publication No. 51-41321) has a duct provided by a suction port provided in the vicinity of a connection portion between the duct and the air blowing nozzle in the middle of the air-conditioning wind blowing device. Is disclosed in which the air volume can be increased without increasing the blowing function by sucking the air around the.

Japanese Patent Laid-Open No. 11-034561 JP 10-119545 A Japanese Utility Model Publication No. 51-41321

  However, the air-conditioning air blowing device disclosed in Patent Document 1 cannot blow out air-conditioned air at a temperature that satisfies each requirement of the driver's seat passenger and the passenger's seat passenger just by blowing out the air-conditioned air in an appropriate direction. . Furthermore, in the air-conditioning air blowing device disclosed in Patent Document 2, there arises a problem that the devices are complicated, large-sized, and cost is increased, for example, heaters are respectively provided in the adjustment paths for the two systems of conditioned air. Furthermore, the air-conditioning air blowing device disclosed in Patent Document 3 simply increases the air-conditioning air blowing amount of the air-conditioning air blowing device at all times, and performs temperature adjustment that satisfies the requirements of the driver's seat and passenger's seat passengers. It cannot be done individually.

  The present invention has been made on the basis of the above problems, and the object is to blow conditioned air at a temperature according to the preference of the occupant at each installation position with good operability without causing an increase in size and cost. An object of the present invention is to provide an air-conditioning air blowing device that can be put out.

According to the invention of claim 1 of the present application, an instrument panel disposed in a passenger compartment and a plurality of flow paths extending from a supply source of conditioned air are branched and extended, and each flow path is connected to the instrument panel. A flow path forming member that communicates with each air-conditioned air outlet disposed at a position opposite to each other, and a negative pressure is applied to the flow path in the pipe wall that is formed on a part of the tube wall in the longitudinal direction of the flow path forming member. A negative pressure region generating portion for generating a region, and a main tube portion that is formed in a part of the tube wall in the longitudinal direction of the flow path forming member and that fits into a mounting hole formed in the instrument panel. A retainer in which the blowout port is formed at the tip of the cylindrical portion, and a downstream side of the curved portion that is supported along the inner peripheral wall of the main cylindrical portion and curves along the longitudinal direction of the flow path in the pipe wall. negative causing a negative pressure region to be formed Adjust the center ring annular throttle portion for throttling the flow path is formed as an area generation unit, by blowing direction a plurality of cooling air ducts of the air from the outlet while being supported by the center in the ring, wherein a barrel movable stop member Ru deployed variably adjusted to narrow the flow path cross-sectional area of the flow path, the annular throttle portion of the negative pressure region is formed in the generator Rutotomoni the main cylindrical portion and the centering of the tube wall A suction passage through which air in the vehicle compartment flows into the negative pressure region of the flow path through each formed through-hole, a cylindrical operation member that is externally fitted to the main cylinder portion and can be manually operated, and an end portion of the operation member an outer ring for variably adjusting the inhalation volume of the passenger compartment air to increase or decrease the passage area is the area of the through-hole of said main cylindrical portion the operating member forms the suction passage and having a formed grip part, the Prepared The features.

The invention according to claim 2 of the present application is characterized in that, in the air-conditioning air blowing device according to claim 1 , the grip portion of the outer ring is formed in a hook shape at an end protruding from the attachment hole.

The present invention increases or decreases the flow passage cross-sectional area of the through-hole that forms the suction passage by displacing the cylindrical operation member via the gripping portion, thereby operating the amount of air sucked into the plurality of ventilation gaps of the barrel By adjusting the amount of mixed air in the lower space of the instrument panel with respect to the conditioned air from the supply source, the temperature of the conditioned air can be adjusted easily. It can be done independently and can be easily adjusted to the desired temperature of each passenger.

In the invention of claim 2 , since the gripping portion is formed in a bowl shape, the operation tube portion of the outer ring can be easily rotated, and the operation tube portion can easily open and close the through hole of the main tube portion. Air temperature can be easily adjusted with good operability.

It is a schematic block diagram of the vehicle provided with the air-conditioning wind blowing apparatus as a 1st reference example . It is a perspective view of the instrument panel of the vehicle of FIG. It is a principal part expanded sectional view of the air-conditioning wind blowing apparatus of FIG. The modification of the air-conditioning wind blowing apparatus of FIG. 1 is shown, (a) is a principal part expanded sectional view, (b) is an expanded side view of an intake air amount adjusting device. It is a side block diagram of the air-conditioning wind blowing apparatus of FIG. The modification of the air-conditioning wind blowing apparatus of FIG. 1 is shown, (a) is a principal part expanded sectional view, (b) is a partial notch sectional view of an intake air amount adjusting device. It is a side view of a conditioned air blowout device as a first implementation mode of the present invention. It is a schematic front view of the blower outlet apparatus used for the air-conditioning wind blower of FIG. FIG. 9 is an exploded perspective view of the outlet device of FIG. 8, and (a) to (e) show individual perspective views of each member. It is a schematic function explanatory drawing of the air-conditioning wind blowing apparatus of FIG. It is a figure explaining the flow state of the airflow in the air-conditioning wind blowing apparatus of FIG.

FIG. 1 shows a schematic configuration diagram of a passenger compartment of an air conditioner AC provided with an air conditioned air blowing device W1 as a first reference example .
Here, the air conditioner AC is provided in a front portion of a vehicle compartment R (not shown). An instrument panel 1 is provided in the front part of the passenger compartment R, and a front deck cross member 3 is extended in the lower space 2 in the vehicle width direction Y (perpendicular to the plane of FIG. 1). It is fixed to the vehicle body side vertical wall.
The engine room 5 disposed via the vehicle compartment R and the dash panel 4 is provided with a main cooling water circulation path 7 and a radiator 8 on the side of the engine 6 mounted on the vehicle, extending from the main cooling water circulation path 7. Hot water is circulated and supplied to the heater unit 11 in the passenger compartment R via the bypass 9.

The air conditioner AC installed in the passenger compartment R is composed of a blower unit 12, an air conditioner unit 13 that forms a supply source of conditioned air, and an air conditioned air blowing device W1 that blows out the air whose temperature is adjusted by these heat sources into the vehicle interior. Is done.
The blower unit 12 includes an inside air inlet 14 from the passenger compartment R, an outside air inlet 15 from the outside of the vehicle, an inside / outside air switching valve 16, a blower 17, and a sensor 18 that detects whether the blower 17 is activated, A temperature sensor 19 for detecting the outside air temperature is provided. For this reason, the internal air or the external air is supplied from the blower unit 12 to the air conditioning unit 13 by the operation of the blower 17.

The air conditioning unit 13 that forms the supply source of the conditioned air has a heater unit 11, a cooler (evaporator) 21, an air mix damper 22, a temperature sensor 22 that detects the temperature of the heater unit 11, and an air mix damper 22. A heater operation sensor 24 is provided for detecting the presence or absence.
Here, when an air conditioner switch (not shown) is turned on, a refrigerant is supplied from a refrigerant source such as a refrigerant compressor to the cooler 21, and air cooling processing is performed. Furthermore, the engine coolant that has flowed out of the engine 1 normally circulates in the bypass path 9 that passes through the heater unit 11. Moreover, the on-off valve 25 is installed in the upstream part of the bypass path 9, and if the air temperature is excessively high, the control device 26 controls to close the on-off valve 25 and stop the flow of the cooling water.

A plurality of air blowing cylinders p1 to p4 are formed in the casing 131 of the air conditioning unit 13, and an air conditioning wind blowing device described later is connected to the air blowing cylinders.
The conditioned air blowing device W1 as the first embodiment includes ducts d1 to d4 as flow path forming members and a blowing device G connected to each downstream end side of the ducts d1 to d4.
Here, ducts d1 to d4 as flow path forming members are connected to the plurality of air blowing cylinders p1 to p4 of the casing 131 of the air conditioning unit 13. The downstream ends of the ducts d1 to d4 communicate with the respective outlets m1 to m4 (m2 and m4 are not shown) provided on the wall facing the cabin of the instrument panel 1.

As shown in FIG. 1, each of the ducts d1 to d4 has a plurality of straight portions a in the middle of the longitudinal direction and curved portions c1 to c4 formed in a part of the middle.
The curved portions c1 to c4 of the ducts d1 to d4 are formed as negative pressure region forming portions that generate a negative pressure region E0 (see FIG. 3) on the downstream side thereof. Here, since each bending part c1-c4 which comprises a negative pressure area | region production | generation part takes the same structure, respectively, here, the 1st bending part c1 which is a 1st duct d1 and a 1st negative pressure area | region production | generation part. This will be described as a representative.
As shown in FIG. 3, the curved part c1 which is a 1st negative pressure area | region production | generation part is formed by curving a part of tube wall 50 substantially 90 degrees, and is formed so that an air flow may be deflected. That is, the flow direction of the air flowing from the air blowing cylinder p1 of the air conditioning unit 13 which is the upstream side in the longitudinal direction of the flow path fr is deflected by approximately 90 °, and the blowing device G having the downstream blowing port m1 is provided. Flow toward.

As shown in FIG. 3, the air flow from the upstream side of the flow path fr in the curved portion c1 flows to the outside (left side in FIG. 3) having a small curvature on the downstream side of the curved portion c1 due to its inertia. Due to the flow characteristics of the air flow caused by this inertial force, a negative pressure (a decrease in static pressure) occurs immediately below the curved portion c1 on the inner side of the flow path fr (right side in FIG. 3). Thus, a negative pressure region E0 is generated.
A first suction port n0 is formed in the inner wall (right side in FIG. 3) of the pipe wall 50 of the first duct d1 having a large curvature immediately below the curved portion c1. This suction port n0 forms a part of a suction passage r0 for allowing the air in the passenger compartment R to flow into the negative pressure region E0 in the flow path fr, and the intake amount of the passenger compartment side air is variable on the outer wall surface of the pipe wall 50. An intake air amount adjusting device 51 for adjustment is provided.

The intake air amount adjusting device 51 includes left and right guide rails 52, a slide door 53 that is supported by both guide rails 52 and slides by receiving a predetermined operation force, and an end of the slide door 53. A protruding knob 54 that can be gripped.
The sliding door 53 is formed so that an appropriate sliding resistance is applied so that an operator holding the knob 54 can move relative to the both guide rails 52 by applying an operation force equal to or greater than a predetermined operation force. As a result, the passage area of the suction passage r0 can be increased or decreased, and the switching operation can be performed so as to maintain a predetermined opening between the fully closed position s1 and the fully open position s2, that is, a predetermined suction amount.
As described above, the first duct d1 forms the negative pressure region E0 immediately below the curved portion c1 that is the first negative pressure region generation unit, and the slide door 53 that is the intake air amount adjusting member is connected to the knob 54. The amount of suction of the suction passage r0 can be adjusted by manually displacing via the.

  As shown in FIG. 5, the air outlet device G connected to the downstream end of the first duct d1 is equipped on the cabin facing wall wr of the instrument panel 1 and continuously forms a flow channel fr extending from the air conditioning unit 13. A cylindrical retainer 31, an air outlet m1 formed at the tip of the main cylinder portion 312 of the retainer 31, a center ring 30 provided in the flow path fr and in the vicinity of the outlet m1, A barrel 32 supported by the outlet m1 of the main cylinder part 312 via the center ring 30 and a base cylinder part 41 fitted around the air outlet m1 of the main cylinder part 312 are provided.

As shown in FIG. 5, the retainer 31 has an attachment band 313 fixed to an end side cylindrical portion 311 at one end thereof, and an extension piece 314 extending from the attachment band 313 is attached to the front deck cross member 3 via a bracket 29.
Note that a duct d1 is connected to the end side cylindrical portion 311 of the retainer 31 via an annular base frame 291, thereby continuously forming a flow channel fr extending from the air conditioning unit 13. The end side cylindrical portion 311 of the retainer 31 extends from the main cylindrical portion 312, and the tip of the main cylindrical portion 312 is fitted into the mounting hole h <b> 1 of the instrument panel 1 via the base cylindrical portion 41.

As shown in FIG. 5, the barrel 32 includes a movable frame 36 that is provided in the flow channel fr of the main cylinder portion 312 and that integrally has a plurality of air guide plates 35 that are provided through the air guide gap g. . A pair of pivot pins 37 project from the opposite ends of the movable frame 36 along the rotation center line Lb, and the pair of pivot pins 37 pivot on the center ring 30 so as to be rotatable about the rotation center line Lb. Is done. The center ring 30 is fitted along the inner peripheral wall in the vicinity of the outlet of the main cylinder portion 312, and the pivot boss portion 302 is integrally formed through three branch frames 301. The pivot boss portion 302 is coupled to the pivot boss 312 on the lattice frame 311 integrally attached to the end side cylindrical portion 311 of the retainer 31 by a pin 37, thereby centering around the center line Lr of the flow channel fr. The ring 30 is rotatably supported.
A rotation restricting spacer 38 is provided between the movable frame 36 and the main cylinder portion 312 so that the movable frame 36 can rotate around the rotation center line Lb when receiving an operating force of a predetermined level or more. Is formed.

Such a blow-out device G rotates the center ring 30 around the rotation center line Lr with respect to the retainer 31, and rotates the barrel 32 around the rotation center line Lb with respect to the center ring 30. The direction of the 32 air guide plates 35 can be manually operated up, down, left and right, and the conditioned air can be blown out in a desired blowing direction.
Similar to the first duct d1 as described above, second to fourth ducts d1 to d4 are formed and can be operated in the same manner.

Next, the operation of the conditioned air blowing device W1 as a first reference example will be described. The first to fourth ducts d1 to d4 form a negative pressure region E0 immediately below the curved portion c1 that is each negative pressure region generation unit, and manually displace the operation member of the intake air amount adjusting member 51. The amount of suction in the suction passage r0 can be adjusted. Here, in the reference state, the suction passages r0 of the first to fourth ducts d1 to d4 are closed by the slide doors 53, and the conditioned air from the air conditioning unit 13 is blown out to the outlets m1 to m4 as they are.

On the other hand, for example, when a passenger in the passenger seat facing the outlet m1 opens the suction passage r0 by a predetermined amount by manually displacing the slide door 53 via the knob 54, the negative pressure region E0 becomes negative (static) Pressure drop).
In this case, the amount of passenger compartment air corresponding to the opening of the suction passage r0 is sucked into the negative pressure region E0 of the first duct d1. As a result, the temperature of the conditioned air from the air conditioning unit 13 can be easily adjusted to a preferable state manually according to the preference of the occupant seated at a position facing the outlet m1. In this case, since the temperature of the conditioned air blown toward another passenger is not changed, there is an advantage that the temperature of the conditioned air can be easily adjusted.

4 (a) and 4 (b) show a conditioned air blowing device W2 as a second reference example .
Compared with the conditioned air blowing device W1 of the first embodiment, the conditioned air blowing device W2 as the second embodiment only uses an intake air amount adjusting device 51a different from the intake air amount adjusting device 51. Differently, the other configurations are the same, and the description of the overlapping components will be omitted.

  In the intake air amount adjusting device 51a, a first suction port n0 is formed in the tube wall 50a of the first duct d1 at a portion immediately below the curved portion c1, and the intake air is formed on the outer wall surface of the tube wall 50a. A quantity adjusting device 51a is provided.

  As shown in FIG. 4B, the intake air amount adjusting device 51a includes a frame 56 that covers the edge of the intake port n0, and intake air that is pivotally supported on the left and right walls of the frame 56 via pivot pins 58. The four dampers 57 as the quantity adjusting members, the locking pins 59 projecting from the base end opposite to the rotating ends of the dampers 57, and the locking lengths of the locking pins 59 of the four dampers 57, respectively. An operation long plate 61 formed to be engaged with the hole 60 and a grippable knob 62 protruding from one end of the operation long plate 61 are provided. The operation long plate 61 is supported by a guide rail 63 formed on the frame body 56 and moves relative to the frame body 56 under a predetermined operation force so that the suction port n0 can be opened and closed by the four dampers 57. Appropriate sliding resistance is given.

  The four dampers 57 move relative to the frame 56 when an operator holding the knob 62 applies an operation force that is greater than or equal to a predetermined operation force, and reaches a predetermined opening between the fully closed position s3 and the fully open position s4. Can be switched. In this case, by opening and closing the four dampers 57, the opening amount of the suction passage r0 is switched to adjust the suction amount, and the same amount of passenger compartment air is sucked into the negative pressure region E0 of the first duct d1. . Thereby, the temperature of the conditioned air from the air conditioning unit 13 can be easily adjusted to a preferable state manually according to the preference of the occupant seated at a position facing the outlet m1. Moreover, since the temperature of the conditioned air blown toward other passengers is not changed, the temperature of the conditioned air can be easily adjusted. The passengers at the other outlets m2 to m4 (see FIG. 1) can also blow the air-conditioned air from the outlets m2 to m4 toward the passenger seat side by raising the temperature of the conditioned air by an appropriate amount.

Next, FIGS. 6A and 6B show a conditioned air blowing device W3 as a third reference example .
The air-conditioning air blowing device W3 as the third reference example is different from the air-conditioning air blowing device W1 in that the curved portion is excluded from the first duct d1, and further, the air-conditioning air blowing device W3 is part of the straight line portion a. The first intake port n0 is formed, and the intake air amount adjustment device 51b different from the intake air amount adjustment device 51 that opens and closes the suction passage r0 is used at the upstream edge of the suction port n0. The configuration is the same, and the description of overlapping components is omitted.

As shown in FIGS. 6A and 6B, a first suction port n0 is formed in a part of the wall 50b of the straight portion a of the first duct d1, and the first suction port n0 is formed upstream of the suction port n0. The pipe wall 50b is equipped with an intake air amount adjusting device 51b for opening and closing the suction passage r0. The intake air amount adjusting device 51b includes a plate valve 63 as an intake air amount adjusting member that covers the intake port n0 from the inside, a pin 64 that is integrally coupled to the base end 631 of the plate valve 63, and the pin 64. The plate-like valve 63 is pivotally supported and is pivotally coupled to the plate-like valve 63 via a pin 64 and integrally coupled to the inner side of the edge of the tube wall 50b, and swings outside the tube wall 50b. A projecting operation piece 66 that can be provided, and a rotation restricting portion 67 that projects from the tube wall 50 b and restricts the rotation of the projecting operation piece 66.
The projecting operation piece 66 has a knob 661 projecting from its rotating end and a locking hole 662 formed inside the knob 661. The locking hole 662 has an opening on the side facing the rotation restricting portion 67, a coil spring 663 is fitted on the bottom side of the hole, a pin 664 is disposed on the protruding end side of the coil spring 663, and the pin is connected to the rotation restricting portion 67. Protruding to the side and urging.

  The rotation restricting portion 67 has a plurality of concave portions 671 formed on the wall surface facing the protruding operation piece 66. Each recess 671 is disposed at a position that can face the pin 664 on the protruding operation piece 66 side. Here, when the plate-like valve 63 is in the closed position s5 that covers the suction port n0 from the inside, the pin 664 of the projecting operation piece 66 integral with the plate-like valve 63 is engaged with the recess 671-1, and the plate-like valve 63. Is in the open position s6 that fully opens the suction port n0 and maintains the tilt angle θ, the pin 664 of the projecting operation piece 66 integral with the plate valve 63 engages with the recess 671-2, and the tilt angle is shifted. Can be regulated. In addition, the pin 664 is selectively switched to any one of the recesses 671-1 to 671-2 so as to be engaged, so that the plate having both functions of the intake air amount adjusting member and the negative pressure region generation unit The shape valve 63 may be configured to maintain an appropriate inclination angle.

When the plate valve 63 opens the suction port n0 and maintains the inclination angle θ, the flow path fr is throttled by the plate valve 63, and the air flow from the upstream side in the flow channel fr on the downstream side of the plate valve 63 is Due to the inertia, the fluid flows upward in FIG. 6 (a) away from the suction port n0. As a result, a negative pressure region E0 in which the static pressure is relatively lowered is generated on the downstream side of the plate-like valve 63 along the flow path fr.
The suction port n0 on the upstream side of the negative pressure region E0 forms a part of a suction passage r0 through which air in the passenger compartment R flows into the negative pressure region E0 in the flow path fr, and the inclination angle θ of the plate valve 63 The intake air corresponding to the negative pressure in the negative pressure region E0 corresponding to the magnitude of the pressure (reduction in static pressure) is sucked in the passenger compartment.

  In this case, by opening and closing the plate-like valve 63 having both functions of the intake air amount adjusting member and the negative pressure region generating unit via the projecting operation piece 66, the inclination angle θ of the plate-like valve 63 can be determined. The opening degree of the suction passage r0 is switched, the suction amount is adjusted, and the same amount of the passenger compartment air is sucked into the negative pressure region E0 of the first duct d1. As a result, the temperature of the air-conditioned air from the air-conditioning unit 13 can be easily adjusted to a preferable state manually according to the preference of the passenger sitting at the position facing the outlet m1, and for other passengers. Since the temperature of the conditioned air that is blown out is not changed, the temperature of the conditioned air can be adjusted easily. The passengers at the other outlets m2 to m4 can also raise the temperature of the conditioned air by an appropriate amount according to their preference and blow out from the outlets m2 to m4 to the passenger seat side. Furthermore, since the plate-like valve 63 having both functions of the intake air amount adjusting member and the negative pressure region generating unit is used, the configuration can be simplified.

Next, FIG. 7 and FIG. 8 show an conditioned air blowing device W4 as a first embodiment of the present invention .
As with the conditioned air blowing device W1 shown in FIG. 1, the conditioned air blowing device W4 includes a plurality of ducts d1 to d4 as flow path forming members. Furthermore, the same each outlet apparatus G1 connected with each downstream end side of the ducts d1-d4 is provided.
The blowout device G1 has an air blowout port m1 and is disposed to face the passenger seat side of the instrument panel 1, and the blowout device G1 having the air blowout port m2 is disposed to face the driver seat side of the instrument panel 1. . The air outlets m3 and m4 are connected to defroster grills 29 and 29 facing a front window (not shown).
Here, the blowout device G1 of each of the ducts d1 to d4 is formed with a negative pressure region forming portion for generating a negative pressure region E0 in the inside thereof. The mouth device G1 will be described as a representative. In addition, the conditioned air blowing device W4 provided with this blowing device G1 includes many identical members as compared to the conditioned air blowing device W1 as the first embodiment, and the same members are denoted by the same reference numerals. Simplify duplicate descriptions.

As shown in FIGS. 7 and 8 and FIGS. 9A to 9E, the outlet device G1, which forms the main part of the conditioned air blowing device W4, continuously forms the flow channel fr extending from the air conditioning unit 13 and the front deck. A cylindrical retainer 31 that is a part of a flow path forming member supported by a part of the cross member 3 via a bracket 29, and an air outlet m1 formed at the tip of the main cylindrical part 312 of the retainer 31 A center ring 30 forming a barrel support portion disposed in the vicinity of the outlet m1 in the flow channel fr, and a barrel 32 supported by the air outlet m1 of the main cylinder portion via the center ring 30; And an outer ring 33 fitted around the air outlet m1 of the main cylinder portion.
The cylindrical retainer 31 forms a part of the flow path forming member, and is connected to the flow path fr extending from the air conditioning unit 13 illustrated in FIG. 1 via the duct d2 via the end side cylindrical portion 311. The distal end of the main cylinder part 312 integrated with the part 311 is fitted into the mounting hole h1 of the instrument panel 1 and is fitted into the base cylinder part 41 fixed to the mounting hole h1 via the outer ring 33.

As shown in FIGS. 7 and 8, the barrel 32 has a movable frame 36 to which a plurality of air guide plates 35 that are arranged via a ventilation gap g <b> 1 are integrally attached. A pair of pivot pins 37 project from the opposite ends of the movable frame 36 along the rotation center line Lb, and the pair of pivot pins 37 pivot on the center ring 30 so as to be rotatable about the rotation center line Lb. Is done. The center ring 30 is fitted along the inner peripheral wall in the vicinity of the outlet of the main cylinder portion 312, and the pivot boss portion 56 is integrally attached via the three branch frames 55. The pivot boss portion 56 is coupled to the pivot boss 58 on the lattice frame 57 integrally attached to the end side cylindrical portion 311 of the retainer 31 by a pin 37, thereby centering around the center line Lr of the flow channel fr. The 30 side is rotatably supported.
A rotation restricting spacer 38 is provided between the movable frame 36 and the main cylinder portion 312 so that the movable frame 36 can rotate around the rotation center line Lb when receiving an operating force of a predetermined level or more. Are pin-coupled.

For this reason, the center ring 30 rotates about the rotation center line Lr with respect to the retainer 31, and the barrel 32 can rotate about the rotation center line Lb with respect to the center ring 30. The direction can be manually operated up, down, left, and right, and the conditioned air can be blown out in a desired blowing direction.
As shown in FIG. 8A, an attachment band 313 is fixed to the end side cylinder portion 311 of the retainer 31, and a fastening piece 314 extending from the attachment band 313 is attached to the front deck cross member 3 via a bracket 29. .

  As shown in FIGS. 7 and 9B, the outer ring 33 is fitted on the outer side of the main cylinder portion 312 supporting the barrel 32 so as to be relatively displaceable, and is fitted on the base cylinder portion 41 so as to be relatively displaceable. An operation cylinder portion 331 is provided as an operation member. The operation cylinder portion 331 is formed with a bowl-shaped grip portion 332 on the side facing the blowing port m1. The grip portion 332 is gripped by an occupant and is formed so that the operation tube portion 331 can be rotated around the center line Lr (see FIG. 7) of the outlet m1. By the way, as shown in FIG. 7 and FIG. 9 (d), the center ring 30 supported along the inner peripheral wall of the main cylinder part is an annular throttle part as a negative pressure region generating part that throttles the flow path to one end side thereof. 80 is formed, and a through hole 71 is formed in a part of the annular throttle portion 80.

As shown in FIGS. 10 and 11, the annular restricting portion 80 is formed to restrict the flow area of the air flow from the upstream side. For this reason, the air flow is regulated so as to flow and displace to the center side of the flow path fr due to its inertia, and then flows to the downstream side of the annular throttle portion 80. At this time, due to the flow characteristics resulting from the inertial force of the airflow, negative pressure (reduction in static pressure) occurs at the peripheral portion of the flow channel fr on the downstream side immediately below the annular throttle portion 80, and the negative pressure region E1 is annularly formed. Generated.
A through hole 72 is also formed in the inner peripheral wall of the main cylinder portion that covers the annular throttle portion 80 of the center ring 30. Furthermore, a through-hole 73 is also formed in the outer ring 33 that is externally fitted to the main cylinder portion.

  The through hole 71 of the annular throttle part 80 of the center ring 30, the through hole 72 of the main cylinder part, and the through hole 73 of the outer ring 33 communicate with each other so that the passenger compartment air in the lower space of the instrument panel 1 is A suction passage r4 that can be led to the annular negative pressure region E1 is formed. Here, each of the through holes 71, 72, 73 is formed in advance so as to be able to communicate with a suction passage r4 for guiding the passenger compartment air to the annular negative pressure region E1. That is, the through hole 71 of the center ring 30 is formed at a position where it can communicate with the annular negative pressure region E1 at any displacement position, and the annular space e1 on the back side of the through hole 71 of the center ring 30 (FIG. 7, FIG. 10), the through-hole 72 of the main cylinder portion is formed at a position where it can communicate at any displacement position. On the other hand, the through-hole 73 of the outer ring 33 is formed so as to increase or decrease the facing area of the main cylinder portion with respect to the through-hole 72 by its rotational displacement.

Here, the through hole 73 of the operation tube portion 331 of the outer ring 30 is in a fully open position s7 (see FIG. 8) communicating with the through hole 72 of the main tube portion 312, and the operation opening is completely the through hole 72 of the main tube portion 312. Switching operation is performed between the closed position s8 and the closed position s8 covered by the wall portion of the operation cylinder portion 331. That is, by rotating the grip portion 332 of the operation tube portion 331, the state of the operation tube portion 331 facing the through hole 73, that is, the passage area that is the area of the suction passage r4 can be increased or decreased.
Next, the operation of the conditioned air blowing device W4 provided with such a blowing device G1 will be described.

When the passenger seat passenger in the passenger compartment requests relatively high-temperature conditioned air, the occupant moves the operation tube portion 331 through the grip portion 332 of the gripped operation tube portion 331 through the center line Lr (FIG. 3). (Ref.) Rotate around.
As a result, the cross-sectional area of the suction passage r4 is increased or decreased, and thereby the amount of air sucked into the annular negative pressure region E0 is manipulated. At this time, as shown in FIG. 10, a relatively large amount of passenger compartment air (air flow is shown by a two-dotted line in FIG. 10) is sucked into the negative pressure region E1, and this negative pressure region E1 is reached from the air conditioning unit 13. Mix in conditioned air. As a result, the conditioned air heated by the passenger compartment air having a relatively high temperature is blown out from the air outlet m1 of the main cylinder portion 312 toward the passenger seat, and the passenger seat that desires the relatively high temperature conditioned air. It is possible to cope with passengers' requests.

  On the other hand, when the passenger in the passenger seat requests relatively low-temperature conditioned air, the operation cylinder portion 331 is operated to the closed position s8 (see FIG. 8). As a result, the operation cylinder portion 331 blocks the suction passage r4. Thereby, the comparatively low-temperature conditioned air from the air conditioning unit 13 can be blown out as it is toward the passenger seat from the air outlet m1, and the request of the passenger in the passenger seat can be dealt with.

In addition, if the operation cylinder part 331 is switched to the predetermined position between the fully open position s7 and the closed position s8, the conditioned air having an intermediate temperature can be blown out from the air outlet m1.
Each of the above operations is performed in the same manner in the conditioned air blowing device of the air blowing port m1 disposed facing the driver's seat side, and the same temperature adjustment can be performed, and the same effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Instrument panel 2 Lower space 13 Air conditioning unit 30 Center ring 31 Retainer 312 Main cylinder part 32 Barrel 33 Outer ring 331 Operation cylinder part (operation member)
332 Grasping part 35 Air guide plate 36 Frame part 51 Intake air amount adjusting device 53 Sliding door (intake air amount adjusting member)
63 Plate-shaped valve (intake air amount adjusting member and negative pressure region generating unit)
71, 72, 73, 74 Through hole 80 Annular throttle part (negative pressure region generating part)
c1 bending portion (negative pressure region generating portion)
d1 to d4 duct (flow path forming member)
r0, r1, r4 Suction passage fr Flow path h1 Mounting hole g1 Ventilation gap m1, m2 Outlet rf Channel AC air conditioner E0, E1 Negative pressure region G, G1 Outlet unit Y Vehicle width direction W1-W4

Claims (2)

Instrument panel deployed in the passenger compartment,
A plurality of flow paths extending from the supply source of the conditioned air, each extending and each flow path forming member communicating with each conditioned air outlet provided at a position facing the instrument panel;
A negative pressure region generating part that is formed on a part of the tube wall in the longitudinal direction of the flow path forming member and generates a negative pressure region in the flow channel in the tube wall;
A main cylinder part formed on a part of the tube wall in the longitudinal direction of the flow path forming member and fitted in an attachment hole formed in the instrument panel is provided, and the blow-out port is formed at the tip of the main cylinder part A retained retainer,
As the negative pressure region generating unit that generates a negative pressure region that is supported along the inner peripheral wall of the main cylindrical portion and that is formed on the downstream side of the curved portion that is curved along the longitudinal direction of the flow path in the pipe wall. A center ring formed with an annular restrictor for restricting the flow path;
By adjusting the blowing direction of the air by a plurality of cooling air ducts from the outlet while being supported by the center in the ring, the movable diaphragm member for variably adjusted to narrow the flow path cross-sectional area of the flow path Ru is deployed Barrel,
Suction passage to flow into the air in the passenger compartment to the negative pressure region of the flow path through each through hole formed in the annular throttle portion of the negative pressure region is formed in the generator Rutotomoni the main cylindrical portion and the centering of the tube wall When,
The through hole of the main tubular portion forming the suction passage the operating member and having a gripping portion on an end portion of the fitted on manually operable cylindrical operation member and the operating member to the main cylindrical portion An outer ring that variably adjusts the intake amount of the passenger compartment air by increasing or decreasing the passage area which is the area of
An air-conditioning air blowing device comprising: In the air-conditioning wind blowing device according to claim 1,
The air-conditioning wind blowing device according to claim 1 , wherein the grip portion of the outer ring is formed in a bowl shape at an end portion protruding from the mounting hole .

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