JP6054191B2 - Door structure for air conditioning unit and air conditioning unit - Google Patents

Description

  The present invention relates to an air conditioning unit door structure and an air conditioning unit.

  A vehicle such as an automobile is provided with an air conditioner (hereinafter referred to as an air conditioner) for adjusting the temperature in the passenger compartment (see, for example, Patent Document 1).

  This air conditioner includes an air conditioning unit installed in the front part of the passenger compartment, and an air conditioning duct for supplying air conditioning air from the air conditioning unit to the air outlets provided in the respective parts of the passenger compartment.

  The air conditioning unit described above includes a hollow air conditioning case having an air inlet and an air outlet.

  Inside the hollow air-conditioning case, a blower (blower), an evaporator (cooling heat exchanger), and a heater core (heat exchange for heating) are arranged between the air inlet portion and the air outlet portion in order from the windward side. ). The leeward side of the evaporator is divided into a hot air passage and a bypass passage by a partition, and the heater core is provided inside the hot air passage.

  Between the evaporator and the heater core, there is provided a mix door that can distribute the air-conditioning air that has passed through the evaporator to the hot air passage and the bypass passage.

  Further, on the exit side of the hot air passage and the bypass passage, a mixing chamber is provided in which the air for air conditioning that has passed through the hot air passage and the bypass passage can be mixed.

  And the above-mentioned air outlet part is provided with two or more with respect to this mix chamber. These air outlets have a differential opening for supplying air-conditioning air toward the windshield to prevent window fogging, and a vent for supplying air-conditioning air to the upper body of the passenger (such as the chest) There are an opening (a center vent opening at the center and a side vent opening at the side), a foot opening for supplying air for air conditioning toward the lower body of the occupant (such as the feet), and the like. Among these, the differential opening and the vent opening are installed in the upper part of the air conditioning case, and the foot opening is installed in an intermediate part of the air conditioning case or a lower part thereof.

  Further, the air conditioning ducts described above are connected to each of the air outlets, and a mode door for switching between opening and closing of the air outlets is provided inside each air outlet. The mode door includes a differential door for opening and closing the differential opening, a center vent door for opening and closing the center vent opening, a side vent door for opening and closing the side vent opening, and a foot door for opening and closing the foot opening. And exist.

  According to such a configuration, the air taken into the air conditioning case from the air inlet by driving the blower is dehumidified and cooled by the evaporator and distributed to the hot air passage and the bypass passage by the mix door. Is done.

  The air-conditioning air distributed to the hot air passage is heated by the heater core and then sent to the mix chamber. The air-conditioning air distributed to the bypass passage is sent to the mix chamber as it is and mixed with the air-conditioning air heated by the heater core, and the temperature is adjusted. The air-conditioning air whose temperature has been adjusted in the mix chamber is blown out from the air outlet through the air-conditioning duct and from the outlets provided in the respective parts of the passenger compartment.

  At this time, by opening the differential opening with the differential door, the air-conditioning air is blown toward the front window glass, and the window fog of the front window glass is prevented.

  In addition, by opening a vent opening (a center vent opening at the center and a side vent opening at the side) by the center vent door or the side vent door, air for air conditioning is blown toward the upper body of the occupant (such as the chest).

  Then, by opening the foot opening with the foot door, air-conditioning air is blown toward the lower body of the occupant (such as the feet).

Japanese Patent No. 4269274

  However, in the conventional air conditioning unit, since each mode door described above is provided independently, the number of parts is increased, and the drive structure is complicated and large to drive each mode door individually. There was a problem, and it was difficult to reduce the size and price of the air conditioning unit.

  On the other hand, the thing of the said patent document 1 makes a part common use and drive structure of a mode door by attaching and fixing a center vent door and a side vent door so that rotation is possible integrally with respect to the same rotating shaft. However, since the center vent door and the side vent door are disposed adjacent to each other in the axial direction, the width dimension of the air conditioning unit cannot be reduced. Further, since the differential door is separated from the center vent door and the side vent door and provided separately, a separate drive structure for the differential door is required. Therefore, the thing of patent document 1 was still inadequate in size reduction and price reduction.

In order to solve the above problems, the invention described in claim 1 is directed to a center vent door and a side vent that can be opened and closed with respect to a center vent opening, a side vent opening, and a differential opening respectively formed in the air conditioning case. In the door structure for an air conditioning unit including a door and a differential door, the center vent door, the side vent door, and the differential door are attached and fixed so as to be integrally rotatable with respect to a common rotating shaft, and the center vent door The opening and closing operations of the side vent door are the same, and the opening and closing operation of the differential door is set opposite to the center vent door and the side vent door, the mounting angle with respect to the common rotating shaft is set, and the differential door is When opened, the center vent door is tilted in a direction that can be biased in the closing direction with respect to the direction parallel to the air-conditioning air flow. It is characterized in that it is.
The invention described in claim 2 is an air conditioner provided with a center vent door, a side vent door, and a differential door that can be opened and closed with respect to a center vent opening, a side vent opening, and a differential opening respectively formed in the air conditioning case. In the unit door structure, the center vent door, the side vent door, and the differential door are mounted and fixed so as to be integrally rotatable with respect to a common rotating shaft, and the center vent door and the side vent door are opened and closed. The mounting angle with respect to the common rotating shaft is set so that the opening / closing operation of the differential door is opposite to that of the center vent door and the side vent door, and the differential door is offset in the radial direction of the rotating shaft. It is characterized by being installed in a state .
The invention described in claim 3 is an air conditioner provided with a center vent door, a side vent door, and a differential door that can be opened and closed with respect to a center vent opening, a side vent opening, and a differential opening respectively formed in the air conditioning case. In the unit door structure, the center vent door, the side vent door, and the differential door are mounted and fixed so as to be integrally rotatable with respect to a common rotating shaft, and the center vent door and the side vent door are opened and closed. The mounting angle with respect to the common rotating shaft is set so that the opening / closing operation of the differential door is opposite to that of the center vent door and the side vent door, and the differential door is curved toward the closing side in the rotational direction. And a linear portion on the open side in the rotational direction .

According to a fourth aspect of the present invention, in the above, the center vent door and the side vent door are arranged at different angles on the same circumference of the rotating shaft, and the differential door includes the center vent door and the center vent door. It is characterized by being placed adjacent to the side vent door.

According to a fifth aspect of the present invention, in the above, the mounting angle with respect to the rotation direction of the common rotating shaft is set so that the differential door is oriented along the flow of air conditioning air when opened. It is characterized by.

The invention described in claim 6 is characterized by an air conditioning unit including the door structure for an air conditioning unit according to any one of claims 1 to 5 .

According to invention of Claim 1, the following effects can be acquired by the said structure. That is, the center vent door, the side vent door, and the differential door are attached and fixed so as to be integrally rotatable with respect to a common rotating shaft, so that a single rotating shaft can be formed. It is possible to reduce the number of parts of the mode door and the mode door. This also makes it possible to greatly simplify the drive structure of the rotating shaft, greatly reduce the mounting space for the rotating shaft and drive structure inside and outside the air conditioning case, and reduce the number of parts and cost of the drive structure. Reduction and simplification of the control mechanism for the drive structure can be obtained. As a result, the air conditioning unit can be significantly reduced in size and price. Furthermore, the opening and closing operations of the center vent door and the side vent door are the same, and the opening angle of the differential door is opposite to that of the center vent door and the side vent door. The differential door can be operated in reverse to the center vent door and the side vent door while opening and closing the center vent door and the side vent door at the same time. As a result, it becomes possible to simplify the setting and changing of the air-conditioning air blowing mode from the air-conditioning case and to promptly change the mode.
The differential door is tilted in a direction in which the center vent door can be urged in the closing direction with respect to a direction parallel to the air-conditioning air flow when opened, so that the air-conditioning air passes through the differential door. Since the center vent door is urged through, the sealing performance with respect to the center vent opening can be improved.
According to invention of Claim 2, the following effects can be acquired further by the said structure. That is, the differential door can be provided away from the center vent door and the side vent door by offsetting the differential door in the radial direction of the rotating shaft. As a result, when the center vent door, the side vent door, and the differential door are integrally provided on the same rotation shaft, it is possible to eliminate the need to arrange the differential door at an intermediate position between the center vent door and the side vent door. Therefore, it is possible to easily secure the opening / closing angle of each door. In addition, the differential opening that is opened and closed by the differential door can be provided separately from the center vent opening and the side vent opening, and the degree of design freedom for each opening and the air conditioning case can be improved. Thereby, it is possible to easily form the center vent opening, the side vent opening, and the differential opening for the air conditioning case. Further, by offsetting the differential door in the radial direction of the rotating shaft, the differential door can be arranged at a position closer to the middle of the differential opening when the differential opening is opened. Thus, the air conditioning air can be distributed by the differential door so that the air conditioning air can efficiently pass through the differential opening.
According to invention of Claim 3, the following effects can be acquired with the said structure further. That is, the differential door has a curved portion on the closed side in the rotational direction and a linear portion on the open side in the rotational direction, thereby preventing the differential door from interfering with the differential opening by the curved portion. Therefore, the differential opening can be enlarged to the closed side (curved portion side) in the rotation direction, and the differential opening can be greatly enlarged accordingly. Further, by enlarging the differential opening toward the closing side in the rotation direction, the differential door can be disposed at a position closer to the middle of the differential opening by the amount corresponding to the curved portion when the differential opening is opened. Thereby, the distribution of the air-conditioning air by the differential door can be adjusted so that the air-conditioning air can pass through the differential opening more efficiently.

According to invention of Claim 4 , the following effects can be acquired by the said structure. That is, the center vent door and the side vent door are arranged at different angles on the same circumference of the rotation shaft, so that the center vent opening and the side vent opening are literally arranged at the same position in the axial direction. Therefore, the axial length of the rotating shaft can be shortened accordingly. Thereby, it becomes possible to arrange the center vent opening and the side vent opening with respect to the air conditioning case so that the positions in the width direction are the same, and accordingly, the width dimension of the air conditioning case is reduced, It is possible to reduce the size of the air conditioning case. The center vent opening and the side vent opening are installed at an angle with respect to the air conditioning case, but the center vent opening and the side vent opening are arranged on the rear surface side and the upper surface side of the air conditioning case. By separately installing the air conditioning case, the size of the air conditioning case with respect to the vehicle front-rear direction (front-rear dimension) can be reduced, and the air conditioning case can be further downsized. In addition, since the differential door is disposed adjacent to the center vent door and the side vent door, the differential door can be efficiently installed at an intermediate position of the rotation shaft.

According to the fifth aspect of the present invention, the following operational effects can be obtained by the above configuration. That is, when the differential door is in an orientation substantially along the flow of air conditioning air when opened, the resistance applied to the air conditioning air when passing through the differential opening is reduced, so that the flow of air conditioning air is not hindered. be able to. Accordingly, the air blowing efficiency can be increased, and the effect of preventing window fogging by the air-conditioning air that has passed through the differential opening can be improved.

According to invention of Claim 6 , the following effects can be acquired by the said structure. That is, by providing the air conditioning unit door structure described above in the air conditioning unit, it is possible to obtain an air conditioning unit having the same effects as described above.

It is a perspective view of the vehicle provided with the air conditioner concerning the Example of this invention. It is the figure which looked at the driver's seat of the vehicle of Drawing 1 from the vehicles back. It is a whole perspective view of the air conditioner of FIG. FIG. 4 is a rear view of FIG. 3. FIG. 4 is a side view of FIG. 3. It is a perspective view of the air conditioner of FIG. 3 which removed the air conditioning duct. It is the perspective view which expanded FIG. 6 and was seen from the different direction. It is a side view which shows the condition inside the air conditioner of FIG. 3 (vent mode). It is a perspective view of the door for an air conditioning unit used for the air conditioner of FIG. It is the perspective view which looked at the door for air-conditioning units of FIG. 9 from the different direction. It is a figure which shows the relationship between the door for air conditioning units, and an air exit part. (A) (b) (c) (d) is sectional drawing which shows the modification of a rotating shaft, respectively. (A) (b) is sectional drawing which shows another modification of a rotating shaft. FIG. 9 is a side view similar to FIG. 8 illustrating the bi-level mode. It is a side view similar to FIG. 8 which shows a differential foot 1st mode. It is a side view similar to FIG. 8 which shows a differential foot 2nd mode. It is a side view similar to FIG. 8 which shows a differential mode.

  Hereinafter, examples embodying the present embodiment will be described in detail with reference to the drawings.

  1 to 17 show this embodiment and its modifications.

  <Configuration> The configuration will be described below.

  As shown in FIGS. 1 and 2, a vehicle 1 such as an automobile is provided with an air conditioner (hereinafter referred to as an air conditioner 3) for adjusting the temperature in the passenger compartment 2.

  The air conditioner 3 includes an air conditioning unit 4 (refer to FIGS. 3 to 5) installed in the front part of the passenger compartment 2, and an air outlet 5 provided in each part of the passenger compartment 2 from the air conditioning unit 4. And an air conditioning duct 7 for supplying air conditioning air 6.

  The air conditioning unit 4 described above includes a hollow air conditioning case 11 having an air inlet portion 8 and an air outlet portion 9 as shown in FIGS.

  Then, as shown in FIG. 8, a blower 12 (blower) and an evaporator 13 (in order from the windward side between the air inlet portion 8 and the air outlet portion 9 are arranged inside the hollow air conditioning case 11. A cooling heat exchanger) and a heater core 14 (heating heat exchanger) are installed. The leeward side of the evaporator 13 is divided into a warm air passage 16 and a bypass passage 17 (or a bypass portion) by the partitioning portion 15, and the heater core 14 is provided inside the warm air passage 16.

  Between the evaporator 13 and the heater core 14, a mix door 18 (hot / cold distribution device) is provided that can distribute the air-conditioning air 6 that has passed through the evaporator 13 to the hot air passage 16 and the bypass passage 17. ing.

  Further, on the exit side of the hot air passage 16 and the bypass passage 17, there is provided a mix chamber 19 in which the air-conditioning air 6 that has passed through the hot air passage 16 and the bypass passage 17 can be mixed.

  A plurality of the air outlet portions 9 described above are provided for the mix chamber 19. As shown in FIGS. 6 and 7, these air outlets 9 have a differential opening 22 for supplying air conditioning air 6 toward the windshield to prevent window fogging, and the upper body of the passenger (such as the chest) The air conditioning air 6 is supplied toward the vent opening (the central center vent opening 24 and the side vent opening 25 on the side) and the lower body of the occupant (such as the feet). There exists a foot opening 26 (see FIG. 8) for the purpose. Among these, the differential opening 22 and the vent opening (the center vent opening 24 and the side vent opening 25) are installed in the upper part of the air conditioning case 11, and the foot opening 26 is an intermediate part of the air conditioning case 11 or a part below it. Is installed.

  Further, the air conditioning ducts 7 are connected to the air outlets 9 such as the differential openings 22, the vent openings (the center vent opening 24 and the side vent opening 25), and the foot openings 26, respectively. A mode door for switching between opening and closing of these is provided inside the air outlet portion 9. The mode door includes a differential door 32 for opening and closing the differential opening 22, a center vent door 34 for opening and closing the center vent opening 24, a side vent door 35 for opening and closing the side vent opening 25, and a foot opening. There is a foot door 36 (see FIG. 8) for opening and closing 26.

  Further, as shown in FIGS. 3 to 5, the above-described air conditioning duct 7 includes a differential duct 42 connected to the differential opening 22 and a vent duct connected to the vent openings (the center vent opening 24 and the side vent opening 25). (Center vent duct and side vent duct 45), a foot duct 46 (see FIG. 8) connected to the foot opening 26, and the like exist.

  In contrast to the above configuration, the present embodiment has the following configuration.

(Configuration 1) Rotating shaft 51
First, as shown in FIGS. 9 and 10, the center vent door 34, the side vent door 35, and the differential door 32 are attached and fixed to the common rotating shaft 51 so as to be integrally rotatable.

  As shown in FIG. 11, the center vent door 34 and the side vent door 35 have the same opening / closing operation, and the differential door 32 has the same opening / closing operation as the center vent door 34 and the side vent door 35. The mounting angle with respect to the rotation shaft 51 is set.

(Supplementary explanation 1)
Here, the center vent door 34, the side vent door 35, the differential door 32, and the rotating shaft 51 can be formed by integral molding (integrated mode door).

  The rotating shaft 51 does not necessarily need to form a continuous shaft portion that connects the center vent door 34, the side vent door 35, and the differential door 32. It may be a thing.

  Further, the same opening / closing operation means that the center vent door 34 and the side vent door 35 are simultaneously opened and closed simultaneously with respect to the center vent opening 24 and the side vent opening 25, respectively.

  When the center vent door 34 and the side vent door 35 are opened with respect to the center vent opening 24 and the side vent opening 25, the differential door 32 is closed with respect to the differential opening 22 when the center vent door 34 and the side vent door 35 are opened. The differential door 32 is opened with respect to the differential opening 22 when the 34 and the side vent door 35 are closed with respect to the center vent opening 24 and the side vent opening 25.

  For this purpose, the differential door 32 is installed with respect to the center vent door 34 and the side vent door 35 with an angle shifted by the rotation angle (opening / closing angle) necessary for opening and closing them.

(Configuration 2)
In the above, as shown in FIGS. 9 to 11, the center vent door 34 and the side vent door 35 are arranged at different angles on the same circumference of the rotating shaft 51.

  Further, the differential door 32 is disposed adjacent to the center vent door 34 and the side vent door 35.

(Supplementary explanation 2)
In this case, the center vent door 34 and the side vent door 35 are installed as a pair on the left and right sides of the rotating shaft 51 (for the driver seat side and the passenger seat side). The differential door 32 is installed at the center of the rotating shaft 51 so as to be sandwiched between a pair of left and right center vent doors 34 and side vent doors 35.

  On the other hand, as shown in FIGS. 6 and 7, the center vent opening 24 and the side vent opening 25 are separately installed on the rear surface side and the upper surface side of the air conditioning case 11. The center vent door 34 is provided to the center vent opening 24 so as to open and close from the inside. Further, the side vent door 35 is provided to the side vent opening 25 so as to open and close from the outside.

  On the other hand, the differential opening 22 is installed on the upper surface side of the air conditioning case 11. In this case, the center vent door 34 is provided to the differential opening 22 so as to open and close from the inside.

(Configuration 3)
In the above, as shown in FIG. 11, the attachment angle with respect to the rotation direction of the common rotating shaft 51 is set so that the differential door 32 is oriented along the flow of the air-conditioning air 6 when opened.

(Supplementary explanation 3)
Here, the flow of the air-conditioning air 6 is the flow direction of the air-conditioning air 6 from the mix chamber 19 toward the differential opening 22.

  Along the flow of the air-conditioning air 6 includes a state parallel to the flow of the air-conditioning air 6 and a state slightly shifted from the parallel state to both sides (about 0 ° to ± 10 °).

  More specifically, the differential door 32 is installed so as to be directed substantially vertically or substantially vertically when opened.

  As described above, the center vent opening 24 is formed on the rear surface side of the upper portion of the air conditioning case 11 substantially rearward. Therefore, the center vent door 34 is disposed so as to face substantially in the vertical direction when closed (however, an inclination of about 0 ° to 30 ° or less is acceptable).

  Further, the side vent opening 25 is formed on the upper surface side of the air conditioning case 11 substantially upward. Therefore, the side vent door 35 is disposed so as to be directed substantially in the horizontal direction when closed (however, an inclination of about 0 ° to 30 ° or less is acceptable).

  Further, the differential opening 22 is formed on the upper surface side of the air conditioning case 11 substantially upward (however, an inclination of about 0 ° to 30 ° or less is acceptable).

  At this time, as described above, the differential opening 22 is formed so as to be inclined with respect to the side vent opening 25 by the opening / closing angle of the side vent door 35. As a result, the differential door 32 has an intermediate angle between the center vent door 34 and the side vent door 35 and is phased toward the center vent door 34 (counterclockwise direction) with respect to the side vent door 35 by the opening / closing angle. It is installed in a state where it is shifted.

  In addition, by adjusting the orientation of each mode door and each air outlet portion 9 so that the differential door 32 faces substantially vertically or substantially vertically when opened, the above-described configuration can be achieved. Become.

(Configuration 4)
In the above, the differential door 32 may be slightly inclined in a direction in which the center vent door 34 can be urged in the closing direction with respect to a direction parallel to the flow of the air-conditioning air 6 when opened (FIG. 11). (See the virtual line inside.)

(Supplementary explanation 4)
In this case, the differential door 32 is further shifted by 1 to 10 ° from the state where the phase is shifted to the center vent door 34 side (counterclockwise direction) by the opening / closing angle with respect to the side vent door 35 as described above. It is arranged so that the phase is shifted toward the center vent door 34 side. The installation angle of the differential opening 22 is also adjusted in accordance with the differential door 32.

  As shown in FIG. 9, the side vent door 35 is particularly high because a small opening 35 a is formed in advance so that a small amount of air-conditioning air 6 can always pass to prevent window fogging. Sealing is not required.

(Configuration 5)
In the above, as shown in FIG. 11, the differential door 32 may be installed in a state offset in the radial direction of the rotating shaft 51 (offset differential door, offset amount 32a).

(Supplementary explanation 5)
Here, the above-described differential door 32 is offset by way of an offset arm 32b. A pair of offset arms 32b are provided on both sides of the differential door 32, for example. In this case, the differential door 32 is offset substantially upward or forward obliquely upward in the closed state.

  On the other hand, the center vent door 34 and the side vent door 35 are installed so as to extend in the radial direction with respect to the rotation shaft 51.

(Configuration 6)
In the above description, the differential door 32 may have the curved portion 61 on the closed side in the rotational direction and the linear portion 62 on the open side in the rotational direction (non-planar differential door).

(Supplementary explanation 6)
Here, the above-described curved portion 61 has an arc shape concentric with the rotation shaft 51, or has a shape approximate to the arc (for example, approximated by a free curve or a plurality of straight lines). Can do.

  In addition, it is preferable that the linear portion 62 described above extends substantially in the tangential direction from the open side end portion of the curved portion 61 or extends in a direction slightly shifted from the tangential direction.

(Configuration 7)
In the above, as shown in FIG. 9, the rotation shaft 51 may be made smaller in diameter than the other portions in the differential door 32 or may be at least partially deleted (small-diameter shaft portion 51a). ).

(Supplementary explanation 7)
Here, when it is necessary to ensure the strength by partially reducing the diameter of the rotating shaft 51 or by partially deleting the rotating shaft 51, for example, the offset arm 32b described above is thickened. It can be supported by the reinforcing means (thick arm).

(Configuration 8)
In the above, as shown in FIG. 12, the rotation shaft 51 may have an elongated shape extending in a direction substantially parallel to a line connecting both ends of the curved portion 61 at the differential door 32 (elongated). Shaft 51b).

(Supplementary explanation 8)
Here, the direction parallel to the line connecting the both end portions of the curved portion 61 includes a slight angle shift.

  The elongate shaft portion 51b includes a blade cross section (FIG. 12A), an oval cross section (FIG. 12B), an elliptical cross section (FIG. 12C), and a strip-shaped cross section (FIG. 12D). (Blade-shaped shaft portion, oval shaft portion, elliptical shaft portion, strip-shaped shaft portion).

  The elongated shaft portion 51b can be combined with the above-described small diameter shaft portion 51a.

(Configuration 9)
In the above, as shown in FIG. 13, the rotating shaft 51 may have at least a portion of the differential door 32 having a meat stealing hole 51c that opens at least downstream in the flow direction of the air conditioning air 6 (hollow shaft). Part).

(Supplementary explanation 9)
Here, the aforementioned meat stealing hole 51c can be a blind hole that does not penetrate the rotating shaft 51 (FIG. 13A), a through hole that penetrates the rotating shaft 51 (FIG. 13B), or the like. A plurality of blind holes can be formed in the axial direction of the rotation shaft 51.

  If possible, the stealing hole 51c can be combined with the small-diameter shaft portion 51a or the elongated shaft portion 51b.

  <Operation> The operation of this embodiment will be described below.

  As shown in FIG. 5, in the air conditioner 3 described above, the air taken into the air conditioning case 11 from the air inlet 8 by driving the blower 12 is dehumidified and cooled by the evaporator 13, and the mix door 18 is distributed to the hot air passage 16 and the bypass passage 17.

  The air-conditioning air 6 distributed to the hot air passage 16 is heated by the heater core 14 and then sent to the mix chamber 19. The air conditioning air 6 distributed to the bypass passage 17 is sent to the mix chamber 19 as it is and mixed with the air conditioning air 6 heated by the heater core 14 to adjust the temperature. The air-conditioning air 6 whose temperature has been adjusted in the mix chamber 19 is blown out from the air outlet 9 through the air-conditioning duct 7 and from the outlets 5 provided in the respective parts of the vehicle compartment 2.

  At this time, by opening the differential opening 22 by the differential door 32, the air-conditioning air 6 is blown out toward the front window glass through the differential duct 42, and the window fog of the front window glass is prevented.

  Further, by opening the vent opening (the center center vent opening 24 and the side vent opening 25 on the side) by the center vent door 34 or the side vent door 35, the vent duct (the center vent duct and the side vent duct 45) is opened. Then, air 6 for air conditioning is blown out toward the upper body (such as the chest) of the occupant.

  Then, by opening the foot opening 26 by the foot door 36, the air-conditioning air 6 is blown out toward the lower body (eg, feet) of the occupant via the foot duct 46.

  More specifically, in this embodiment, as shown in FIG. 8, the vent opening (the central center vent opening 24 and the side side vent opening 25 (not shown)) is fully opened, and the differential opening 22 is The vent mode is set by fully closing the foot opening 26.

  Further, as shown in FIG. 14, the vent opening (the central center vent opening 24 and the side vent opening 25 (not shown) on the side) is fully opened, the differential opening 22 is fully closed, and the foot opening 26 is intermediately opened. By entering the degree, it becomes a bi-level mode.

  Further, as shown in FIG. 15, the vent opening (the central center vent opening 24 and the side side vent opening 25 (not shown)) is fully closed, the differential opening 22 is fully opened, and the foot opening 26 is fully open. By doing so, it becomes the differential foot first mode.

  Further, as shown in FIG. 16, the vent opening (the central center vent opening 24 and the side vent opening 25 (not shown) on the side) is fully closed, the differential opening 22 is fully opened, and the foot opening 26 is intermediately opened. By setting the degree, it becomes the differential foot second mode.

  Then, as shown in FIG. 17, the vent opening (the central center vent opening 24 and the side vent opening 25 (not shown) on the side) is fully closed, the differential opening 22 is fully opened, and the foot opening 26 is fully closed. By setting, it becomes the differential mode.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 1)
The center vent door 34, the side vent door 35, and the differential door 32 are attached and fixed so as to be integrally rotatable with respect to the common rotating shaft 51, so that the rotating shaft 51 can be unified. It becomes possible to consolidate the shaft structure and reduce the number of parts of the mode door.

  This also makes it possible to greatly simplify the drive structure of the rotating shaft 51, reduce the mounting space of the rotating shaft 51 and the drive structure with respect to the inside and outside of the air conditioning case 11, and the number of parts of the drive structure In addition, the cost can be reduced and the control mechanism for the drive structure can be simplified. As a result, the air conditioning unit 4 can be significantly reduced in size and price.

  Further, the opening and closing operations of the center vent door 34 and the side vent door 35 are the same, and the opening and closing operations of the differential door 32 are opposite to those of the center vent door 34 and the side vent door 35. Thus, the differential door 32 can be operated reversely to the center vent door 34 and the side vent door 35 while simultaneously opening and closing the center vent door 34 and the side vent door 35. Thereby, it becomes possible to simplify the setting and change of the blowing mode of the air-conditioning air 6 from the air-conditioning case 11 and to change the mode quickly.

(Effect 2)
The center vent door 34 and the side vent door 35 are arranged at different angles on the same circumference of the rotating shaft 51, so that the center vent opening 24 and the side vent opening 25 are literally at the same position in the axial direction. The axial length of the rotating shaft 51 can be shortened accordingly.

  Thereby, it becomes possible to arrange the center vent opening 24 and the side vent opening 25 with respect to the air conditioning case 11 so that the positions in the width direction are the same, and accordingly, the width dimension of the air conditioning case 11. It is possible to reduce the size of the air conditioning case 11.

  The center vent opening 24 and the side vent opening 25 are installed at an angle with respect to the air conditioning case 11, and the center vent opening 24 and the side vent opening 25 are connected to the rear surface of the air conditioning case 11. By separately installing the air conditioning case 11 on the side and the upper surface side, the size (front-rear dimension) of the air conditioning case 11 with respect to the front-rear direction of the vehicle 1 can be reduced, and the air conditioning case 11 can be further downsized.

  Further, the differential door 32 is disposed adjacent to the center vent door 34 and the side vent door 35, so that the differential door 32 can be efficiently installed at the intermediate position of the rotating shaft 51.

(Effect 3)
The opening of the differential door 32 substantially follows the flow of the air-conditioning air 6 when opened, thereby reducing the resistance given to the air-conditioning air 6 when passing through the differential opening 22 and not hindering the flow of the air-conditioning air 6. Can be. Accordingly, the air blowing efficiency can be increased, and the window fog prevention effect by the air conditioning air 6 that has passed through the differential opening 22 can be improved.

(Effect 4)
The differential door 32 is slightly inclined in a direction in which the center vent door 34 can be biased in the closing direction with respect to a direction parallel to the flow of the air conditioning air 6 when opened, so that the air conditioning air 6 passes through the differential door 32. At this time, since the center vent door 34 is biased via the differential door 32, the sealing performance with respect to the center vent opening 24 can be improved.

(Effect 5)
By offsetting the differential door 32 in the radial direction of the rotary shaft 51, the differential door 32 can be provided away from the center vent door 34 and the side vent door 35. Thus, when the center vent door 34, the side vent door 35, and the differential door 32 are integrally provided on the same rotation shaft 51, the differential door 32 is disposed at an intermediate position between the center vent door 34 and the side vent door 35. Therefore, it is possible to easily secure the opening / closing angle of each door. Further, the differential opening 22 opened and closed by the differential door 32 can be provided separately from the center vent opening 24 and the side vent opening 25, and the degree of design freedom for each opening and the air conditioning case 11 can be improved. Become. Thereby, it is possible to easily form the center vent opening 24, the side vent opening 25, and the differential opening 22 with respect to the air conditioning case 11.

  Further, by offsetting the differential door 32 in the radial direction of the rotary shaft 51, the differential door 32 can be arranged at a position closer to the middle of the differential opening 22 when the differential opening 22 is opened. Thus, the air conditioning air 6 can be distributed by the differential door 32 so that the air conditioning air 6 can efficiently pass through the differential opening 22.

(Effect 6)
The differential door 32 has the curved portion 61 on the closed side in the rotational direction and the linear portion 62 on the open side in the rotational direction, so that the differential door 32 interferes with the differential opening 22 by the curved portion 61. Therefore, the differential opening 22 can be enlarged to the closed side in the rotation direction (the curved portion 61 side), and the differential opening 22 can be greatly enlarged accordingly.

  Further, by enlarging the differential opening 22 toward the closing side in the rotation direction, the differential door 32 can be disposed at a position closer to the middle of the differential opening 22 by the amount of the curved portion 61 when the differential opening 22 is opened. Thus, the distribution of the air conditioning air 6 by the differential door 32 can be adjusted so that the air conditioning air 6 can pass through the differential opening 22 more efficiently.

(Effect 7)
Since the rotation shaft 51 is made smaller in diameter than the other part in the differential door 32 or at least partially removed, the flow passage area of the air-conditioning air 6 can be enlarged and rotated. It becomes possible to reduce the flow resistance by the shaft 51, prevent wind noise and reduce the weight.

  Even when the diameter of the rotating shaft 51 is reduced or deleted at the portion of the differential door 32, the rotational force can be transmitted to the differential door 32 via the offset arm 32b and the strength can be secured by the offset arm 32b. There is no.

(Effect 8)
The rotating shaft 51 has an elongated shape extending in a direction parallel to a line connecting both ends of the curved portion 61, thereby expanding the flow passage area of the air conditioning air 6 and rectifying the air conditioning air 6. Therefore, it becomes possible to reduce the flow resistance by the rotating shaft 51, prevent wind noise and reduce the weight.

(Effect 9)
Since the rotating shaft 51 has at least the meat stealing hole 51c opened at the downstream side in the flow direction of the air-conditioning air 6 at least in the portion of the differential door 32, the weight of the rotating shaft 51 can be reduced. Furthermore, the passage area of the air-conditioning air 6 can be increased by forming the meat theft hole 51 c as a hole that penetrates the rotating shaft 51.

(Effect 10)
By providing the air-conditioning unit door structure in the air-conditioning unit 4, the air-conditioning unit 4 having the same effects as described above can be obtained.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

4 Air Conditioning Unit 6 Air Conditioning Air 11 Air Conditioning Case 22 Differential Opening 24 Center Vent Opening 25 Side Vent Opening 32 Differential Door 34 Center Vent Door 35 Side Vent Door 51 Rotating Shaft 61 Curved Part 62 Linear Part

Claims (6)

In the air conditioning unit door structure including a center vent door, a side vent door, and a differential door that can be opened and closed with respect to the center vent opening, the side vent opening, and the differential opening respectively formed in the air conditioning case,
The center vent door, the side vent door, and the differential door are mounted and fixed so as to be integrally rotatable with respect to a common rotating shaft,
The center vent door and the side vent door have the same opening / closing operation, and the opening / closing operation of the differential door is set opposite to the center vent door and the side vent door.
A door structure for an air conditioning unit, wherein the differential door is inclined in a direction in which the center vent door can be urged in a closing direction with respect to a direction parallel to the flow of air conditioning air when opened . In the air conditioning unit door structure including a center vent door, a side vent door, and a differential door that can be opened and closed with respect to the center vent opening, the side vent opening, and the differential opening respectively formed in the air conditioning case,
The center vent door, the side vent door, and the differential door are mounted and fixed so as to be integrally rotatable with respect to a common rotating shaft,
The center vent door and the side vent door have the same opening / closing operation, and the opening / closing operation of the differential door is set opposite to the center vent door and the side vent door .
The door structure for an air conditioning unit, wherein the differential door is installed in a state of being offset in the radial direction of the rotating shaft . In the air conditioning unit door structure including a center vent door, a side vent door, and a differential door that can be opened and closed with respect to the center vent opening, the side vent opening, and the differential opening respectively formed in the air conditioning case,
The center vent door, the side vent door, and the differential door are mounted and fixed so as to be integrally rotatable with respect to a common rotating shaft,
The center vent door and the side vent door have the same opening / closing operation, and the opening / closing operation of the differential door is set opposite to the center vent door and the side vent door .
A door structure for an air conditioning unit, wherein the differential door has a curved portion on the closed side in the rotational direction and a linear portion on the open side in the rotational direction . The center vent door and the side vent door are arranged with different angles on the same circumference of the rotating shaft,
The door structure for an air conditioning unit according to any one of claims 1 to 3 , wherein the differential door is disposed adjacent to the center vent door and the side vent door. The defroster door is such that along the flow of conditioned air to the open time of orientation, either of claims 1 to 4, characterized in that the mounting angle with respect to the rotational direction of the common axis of rotation is set The door structure for an air conditioning unit according to claim 1 . An air conditioning unit comprising the door structure for an air conditioning unit according to any one of claims 1 to 5 .