JP3982251B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner capable of partitioning an air conditioning case into a plurality of air passages and performing independent temperature control in each of the plurality of air passages.
[0002]
[Prior art]
In recent years, an increasing number of so-called left and right independent control vehicle air conditioners, in which the air conditioning setting can be varied independently on the left and right sides (for example, the driver's seat side and the passenger seat side). The left and right independent control vehicle air conditioners can be broadly divided into specifications, and the left and right completely independent controls that can set not only the blowout air temperature but also the blowout mode of the conditioned air independently on the driver side and the passenger side, There is a left and right independent temperature control that can be set independently on the driver side and the passenger side only for the blowout air temperature in common on the driver side and the passenger side.
[0003]
The left and right completely independent control vehicle air conditioner is configured to divide the air passage in the air conditioning case into a driver seat and a passenger seat by a partition plate in the center of the left and right, and the air mix door that controls the temperature also switches the outlet The switching door is also configured separately on the left and right sides, and drive control is performed on the left and right separately.
[0004]
On the other hand, the left and right independent temperature control vehicle air conditioner described below divides the air passage in the air conditioning case into a driver seat and a passenger seat with a left and right central partition plate, and an air mix door that adjusts the temperature Although it is the same to separately drive and control left and right separately, the left and right common outlet switching doors are combined with a partition plate inserted in the center of one door, and drive control is performed on either the left or right It will be.
[0005]
As a conventional technique for assembling such a left and right independent temperature control vehicle air conditioner, there is a door mounting structure as disclosed in Japanese Patent Laid-Open No. 2001-253223. This is a structure in which the partition plate is provided with a shaft support portion that supports the shaft portion of the outlet switching door, and is assembled in the air conditioning case with the partition plate supporting the outlet switching door. The structure of a bearing part is shown.
[0006]
[Problems to be solved by the invention]
In the conventional structure shown in FIG. 8, when the shaft portion 15a (only the cross section of the shaft portion 15a) of the outlet switching door is fitted from the opening portion of the shaft support portion 7a provided on the partition plate 7, the shaft portion 15a is opened. By pressing against the part, the parts on both sides of the opening part are pushed outward and the shaft part 15a is fitted into the shaft support part 7a.
[0007]
However, the pressing direction is slightly deviated, or the sliding between the outer surface of the shaft portion 15a and the portions on both sides of the opening is only slightly worse. On the other hand, there is a problem that the opening becomes narrower and it is difficult to fit.
[0008]
Moreover, since the support of the blower outlet switching door with this partition plate is for combining in advance and assembling in the air conditioning case at the same time, if the gripping force at the shaft support portion 7a is increased, the shaft portion with respect to the partition plate Although the verticality of 15a rises and it becomes easy to assemble to an air-conditioning case, it is a problem because it becomes heavy when the outlet switching door is rotated after being assembled as a vehicle air conditioner.
[0009]
Further, if the gripping force at the shaft support portion 7a is too weak, there is no problem that the rotation of the air outlet switching door becomes heavy after being assembled as a vehicle air conditioner, but the posture of the shaft portion 15a with respect to the partition plate Since it is not determined, it is difficult to assemble it into the air conditioning case, which is a contradiction.
[0010]
The present invention has been made in view of the above-described conventional problems. The first object is to facilitate the combination of the shaft support part and the shaft part, and the second object is to rotate the shaft part. The vertical posture of the shaft portion with respect to the shaft support portion can be maintained without increasing the weight.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following technical means.
[0013]
In the first aspect of the invention, the guide portion (7b) having a surface opened outwardly beside the opening of the shaft support portion (7a) is provided so as to protrude from the outer shape of the shaft support portion (7a), and
The shaft support (7a) has the same thickness as the partition plate (7),
When the shaft portion (15a) is supported by the shaft support portion (7a), the shaft rotation doors (15D, 15F) are positioned in the axial direction, and the shaft portion (7) is positioned with respect to the plate surface of the partition plate (7). As a posture holding means for maintaining 15a) in a substantially orthogonal posture, posture holding projections (15b) facing both surfaces of the partition plate (7) are provided on the shaft portion (15a),
When the shaft rotating door (15D, 15F) is assembled to the air conditioning case (2), when the shaft portion (15a) is inclined with respect to the plate surface of the partition plate (7), the posture holding projection portion (15b) ) Is in contact with both surfaces of the partition plate (7), thereby preventing the shaft portion (15a) from being inclined.
[0014]
This is not the idea of increasing the perpendicularity by increasing the gripping force of the shaft portion (15a) and following the inner cylindrical surface of the shaft support portion (7a), but the plate portion (7) of the plate (7) on the shaft portion (15a). By providing the projecting portion (15b) facing both surfaces, if the shaft portion (15a) tries to tilt, the projecting portion (15b) contacts and supports both surfaces of the plate (7), so that tilting is prevented. Is.
[0015]
Therefore, after assembling as a vehicle air conditioner, when the shaft portion (15a) is about to be displaced in the axial direction, the projecting portion (15b) may contact the partition plate (7) as a positioning. Since the shaft portion (15a) is supported at both ends by the air conditioning case (2) and is not inclined with respect to the partition plate (7), the problem that the projection portion (15b) makes the rotation of the outlet switching door heavy. Absent.
[0016]
As a result, the vertical posture of the shaft portion (15a) with respect to the shaft support portion (7a) can be maintained without increasing the rotation of the shaft portion (15a). Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
(First embodiment)
FIG. 1 is a cross-sectional view showing the internal structure of the air conditioning unit 1, and FIG. 2 is a plan view showing a state in which the partition plate and the door are combined in the first embodiment of the present invention. 3 is a detailed perspective view of a portion A in FIG. 2, and FIG. 4 is a view of the shaft support portion of FIG. 3 viewed from the shaft axial direction.
[0019]
The vehicle air conditioner of the present embodiment includes an air conditioning unit 1 that can independently adjust the temperature on the driver's seat side and on the passenger seat side. The air conditioning unit 1 includes an air conditioning case 2, a cooling heat exchanger 3 accommodated in the air conditioning case 2, a heating heat exchanger 4, a driver's seat side air mix door 5, and a passenger's seat side air mix door 6 (FIG. (Not shown), an outlet switching door (described later), and the like.
[0020]
The air-conditioning case 2 is connected to a well-known blower (not shown) and forms an air passage for sending air sent from the blower into the passenger compartment, and the inside of the case is divided by a partition plate 7 (see FIG. 2). Is divided into a driver's seat side air passage 8 and a passenger seat side air passage 9 (see FIG. 3).
[0021]
The air-conditioning case 2 includes a defroster outlet 10, a driver-side face outlet 11, a passenger-side face outlet 12, a driver-side foot outlet 13, and a passenger-side foot outlet as blowout air outlets. 14 etc. are provided, and each blower outlet is connected to the air blower outlet opened to each place in a vehicle interior via the duct which is not shown in figure, respectively.
[0022]
The driver's side face air outlet 11 and the foot air outlet 13 are respectively provided in the driver's seat side case and open to the driver side air passage 8, and the passenger's side face air outlet 12 and foot outlet 14 are respectively provided. Provided in the passenger seat side case and opened to the passenger seat side air passage 9, the defroster outlet 10 is opened to both the driver seat side air passage 8 and the passenger seat side air passage 9.
[0023]
The partition plate 7 is arranged on the air downstream side of the cooling heat exchanger 3 in the air conditioning case 2, and the air downstream side of the cooling heat exchanger 3 is arranged on the driver side air passage 8 and the passenger side air passage 9. It is divided into. The cooling heat exchanger 3 is a refrigerant evaporator of a refrigeration cycle, and cools air passing through the cooling heat exchanger 3 (air blown from a blower) by heat exchange with a low-temperature refrigerant flowing inside.
[0024]
The heating heat exchanger 4 heats air passing through the heating heat exchanger 4 (air cooled by the cooling heat exchanger 3) using engine cooling water (hot water) as a heat source. The air mix doors 5 and 6 are arranged adjacent to the heating heat exchanger 4, and the amount of air passing through the heating heat exchanger 4 and the amount of air bypassing the heating heat exchanger 4 according to the door opening degree. And adjust the ratio.
[0025]
However, the air mix doors 5 and 6 are disposed in both the driver seat side air passage 8 and the passenger seat side air passage 9 and are independently driven to rotate by individual actuators (not shown). Therefore, by independently controlling the opening degree of the driver side air mix door 5 and the passenger side air mix door 6 on the driver side and the passenger side, respectively, the blowout temperatures on the driver side and the passenger side are separately controlled. Can be adjusted to.
[0026]
The shaft rotation doors 15D and 15F for switching the outlets are used to switch the outlets according to the selected outlet mode, and include a defroster door 15D that opens and closes the defroster outlet 10, and both face outlets 11 and 15F. 12 and a face / foot door 15 </ b> F for switching between the two air outlets 13 and 14.
[0027]
In addition, the defroster door 15D and the face / foot door 15F are interlocked and driven by an actuator (for example, a servo motor) via a link mechanism (not shown). The actuators of these doors are energized and controlled by an electronic control unit (ECU) (not shown).
[0028]
Next, the operation of this embodiment will be described.
[0029]
a) When the air conditioning mode is air mix operation.
[0030]
The air sent from the blower to the air conditioning unit 1 is cooled when passing through the cooling heat exchanger 3, and the air passing through the heating heat exchanger 4 according to the opening of the air mix doors 5 and 6 is heated. After being divided into air that bypasses the heat exchanger 4 for heating, the temperature of the hot air that has been heated by passing through the heat exchanger 4 for heating and the cold air that has bypassed the heat exchanger 4 for heating are merged, and the temperature is adjusted. The air is blown into the vehicle compartment from a predetermined air outlet that opens according to the air outlet mode.
[0031]
b) When the air conditioning mode is maximum heating operation.
[0032]
When the air mix doors 5 and 6 fully open the inlet side of the heating heat exchanger 4, all the air cooled through the cooling heat exchanger 3 is heated when passing through the heating heat exchanger 4. Then, the air is blown out mainly from the foot outlets 13 and 14 into the vehicle compartment (occupant's feet).
[0033]
c) When the air conditioning mode is maximum cooling operation.
[0034]
When the air mix doors 5 and 6 fully close the inlet side of the heat exchanger 4 for heating, all the air cooled by passing through the heat exchanger 3 for cooling flows bypassing the heat exchanger 4 for heating. The air is blown out from the face outlets 11 and 12 into the passenger compartment (the upper body of the occupant).
[0035]
Next, features of the present invention will be described. As shown in FIG. 2, the vehicle air conditioner of the present invention has a partition plate 7 that is partially open to the outside, and the shaft portion 15 a of the outlet switching doors 15 </ b> D and 15 </ b> F is fitted through the opening. Is provided with a shaft support portion 7a that surrounds and supports the shaft portion 15a, and the air outlet case switching doors 15D and 15F are combined with the partition plate 7 and assembled into the air conditioning case 2 using the shaft support portion 7a. ing.
[0036]
Then, as shown in FIGS. 3 and 4, a guide portion 7b having an outwardly opened surface on the side of the opening of the shaft support portion 7a is formed from the outer shape of the shaft support portion 7a (two-dot chain line in FIG. 4). Is also provided protruding. As a result, when the shaft portion 15a is pressed and fitted into the opening of the shaft support portion 7a, the pressing direction is slightly shifted, or the sliding between the outer surface of the shaft portion 15a and the portions on both sides of the opening is somewhat worse. However, since the guide portion 7b works so as to push the portions on both sides of the opening outward, the shaft portion 15a can be easily fitted to the shaft support portion 7a and can be easily combined.
[0037]
(Second Embodiment)
FIG. 5 is a detailed perspective view of the shaft support portion 7a and the shaft portion 15a of the partition plate 7 according to the second embodiment of the present invention. For the sake of clarity, the door plate portion is omitted and only the shaft portion is shown. is there. FIG. 6 is a view of a state in which the partition plate 7 and the door 15F (15D) are combined as seen from a direction perpendicular to the shaft axis direction.
[0038]
In the first embodiment described above, the shaft support portion 7a has a substantially cylindrical shape with a width in the axial direction. In the present embodiment, as shown in FIG. The same thickness as the plate thickness. And the guide part 7b is provided beside the opening part as in the first embodiment.
[0039]
In this embodiment, as shown in FIGS. 5 and 6, when the shaft portion 15a is supported by the shaft support portion 7a, the outlet switching doors 15D and 15F are positioned in the axial direction and the plate surface of the partition plate 7 is used. As a posture holding means for maintaining the shaft portion 15a in a substantially perpendicular posture, a posture holding projection 15b that faces both surfaces of the partition plate 7 is provided on the shaft portion 15a.
[0040]
This is the shape of the substantially cylindrical shaft support portion 7a as in the first embodiment, for example, and the vertical force is increased by increasing the gripping force of the shaft portion 15a and following the inner cylindrical surface of the shaft support portion 7a. Instead of the idea, by providing the shaft portion 15a with protrusions 15b facing both surfaces of the plate 7, if the shaft portion 15a is inclined, the protrusion 15b contacts and supports both surfaces of the plate 7 to prevent tilting. It is to try.
[0041]
Therefore, after assembling as a vehicle air conditioner, even if the projection 15b may come into contact with the partition plate 7 for positioning when the shaft 15a is about to be displaced in the axial direction, the shaft 15a Since it is supported by the air conditioning case 2 and does not tilt with respect to the partition plate 7, there is no problem that the protruding portion 15b makes the rotation of the outlet switching door heavy. Thereby, the vertical posture of the shaft portion 15a with respect to the shaft support portion 7a can be maintained without increasing the rotation of the shaft portion 15a.
[0042]
The posture maintaining projection 15b is not necessarily provided in a disc shape around the entire circumference of the axis. As shown in FIG. 6, when the partition plate 7 and the door 15F (15D) are combined and assembled into the air conditioning case 2 in the direction following the gravity, the center of gravity of the door 15F (15D) is set. Since the shaft portion 15a being held is offset, a moment is always generated that tends to tilt in the direction of the arrow in the figure. Therefore, if the posture holding protrusions 15b are alternately protruded in the direction of FIG. 6, the support can be supported by contacting both surfaces of the partition plate 7 and tilting can be effectively prevented.
[0043]
(Other embodiments)
FIG. 7 is a diagram showing another embodiment of the shaft support portion 7a. The shaft support portion 7a is not necessarily cylindrical, but may be, for example, a substantially triangular shape shown in (a) or a substantially square shape shown in (b). Further, even in the case of a cylindrical shape as shown in FIG. 8, the corner portions generated at both ends of the opening portion are made R-shaped, such as both ends of the guide portion 7b in FIG. 3, so that the shaft portion 15a can be easily fitted. May be.
[0044]
In the above-described embodiment, the shaft support portion 7a is integrally formed with the partition plate 7. However, the present invention is not limited to this, and the partition plate 7 and the outlet switching doors 15D and 15F are connected by separate shaft support components. It may have a structure to be engaged.
[0045]
Moreover, in the above-mentioned embodiment, although the shaft support part 7a is formed in the partition plate 7 side, the range which does not have trouble in rotation of the blower outlet switching doors 15 and 16 (the thickness of the substantially blower outlet switching doors 15D and 15F). The shape which engages with the partition plate 7 may be provided on the outlet switching doors 15D and 15F side.
[0046]
Further, in the above-described embodiment, a general plate door is used as the shaft rotation door, but it is not limited to this as long as the door has a rotation shaft. For example, the rotation shaft is arranged near the center of the plate door portion. It may be a butterfly door, a rotary door having an arc surface with respect to the rotation axis as a door surface, or the like.
[0047]
Furthermore, even if it is a surface sliding door that does not rotate, such as a film door of a film member, a flexible door such as a thin plate member with a little waist, a slide door that combines a film with a rigid frame, etc. The present invention may be applied to assembling a rotating shaft for winding a film, a rotating shaft for driving a flexible door or a sliding door, and the like.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an internal structure of an air conditioning unit according to an embodiment of the present invention.
FIG. 2 is a plan view of a state in which the partition plate and the door are combined in the first embodiment of the present invention.
FIG. 3 is a detailed perspective view of a portion A in FIG.
4 is a view of the shaft support portion of FIG. 3 as viewed from the shaft axial direction.
FIG. 5 is a detailed perspective view of a shaft support portion and a shaft portion of a partition plate according to a second embodiment of the present invention.
FIG. 6 is a view of a state in which a partition plate and a door are combined as seen from a direction perpendicular to the shaft axis direction.
FIGS. 7A and 7B are diagrams showing another embodiment of the shaft support portion. FIGS.
FIG. 8 is a view of a conventional shaft support portion as seen from the shaft axial direction.
[Explanation of symbols]
2 Air-conditioning case 7 Partition plate 7a Shaft support portion 7b Guide portion 8 Driver's seat side air passage (air passage)
9 Passenger side air passage (air passage)
15D defroster door, outlet switching door (shaft rotating door)
15F face / foot door, outlet switching door (shaft rotating door)
15a Shaft portion 15b Posture for maintaining posture (posture holding means)

Claims (1)

A partition plate (7) for partitioning the air conditioning case (2) into a plurality of air passages (8, 9);
A shaft turning door (15D, 15F) for changing the flow of air flowing through each of the plurality of air passages (8, 9);
A part of the partition plate (7) opens outward, and the shaft portion (15a) of the shaft turning door (15D, 15F) is fitted into the shaft portion (15a) through the opening. A shaft support portion (7a) surrounding and supporting
In the vehicle air conditioner having a structure in which the shaft rotating door (15D, 15F) is combined with the partition plate (7) in the air conditioning case (2) using the shaft support portion (7a).
A guide portion (7b) having an outwardly open surface beside the opening of the shaft support portion (7a) is provided so as to protrude from the outer shape of the shaft support portion (7a), and
The shaft support portion (7a) has the same thickness as the partition plate (7),
When the shaft portion (15a) is supported by the shaft support portion (7a), the shaft turning doors (15D, 15F) are positioned in the axial direction, and the plate surface of the partition plate (7) is positioned. As a posture holding means for maintaining the shaft portion (15a) in a substantially orthogonal posture, posture holding projections (15b) facing both surfaces of the partition plate (7) are provided on the shaft portion (15a),
When the shaft rotating door (15D, 15F) is assembled to the air conditioning case (2), the posture is maintained when the shaft portion (15a) is inclined with respect to the plate surface of the partition plate (7). The vehicle air conditioner is characterized in that the shaft portion (15a) is prevented from tilting when the projecting portion (15b) contacts both surfaces of the partition plate (7).

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