CAR AIR CONDITIONER

Abstract: A casing 21 of an automotive air conditioner is formed with a hole TH for accommodating a steering member S extending in a right-left direction of a vehicle. The hole TH extends through the casing 1 in the right-left direction of the vehicle.

Description: Technical Field This invention relates to an automotive air conditioner, and more particularly to an automotive air conditioner which cope with a change in the location of a steering member support part. Background Art FIG. 29 is a longitudinal cross-sectional view of a conventional automotive air conditioner. This automotive air conditioner is arranged in a space defined by an instrument panel (not shown), a floor panel Fl, and a fire panel Fi. The fire panel Fi divides between an engine room ER and a compartment R, while the floor panel forms the floor of the compartment R. The automotive air conditioner and the instrument panel are located within the compartment R. A steering member support part S is located between the instrument panel and the automotive air conditioner. This automotive air conditioner has a casing 501 in which there are accommodated a blower 503, an evaporator 505, an air-mixing door 506, and a heater core 507. The casing 501 is formed with a defroster outlet d, a vent outlet v, and a foot outlet f. The defroster outlet d and the vent outlet v are located in an upper part of the casing 501, while the foot outlet f is located in a lower part of the same. Air is blown into the cabin space of the compartment R from the respective outlets d, v, f via ducts (not shown). On an automotive assembly line, when the automotive air conditioner, the steering member support part S, and the like are mounted on an automotive vehicle, the automotive air conditioner is mounted first. In doing this, ends of pipes of an evaporator 505 and a heater core 507 are projected via holes of the fire panel into the engine room. Next, the steering member support part S is mounted. Finally, the instrument panel is laid over the steering member support part S and the automotive air conditioner, and an upper part of the instrument panel is screwed to a cowl, while a lower part of the instrument panel is screwed to the floor panel Fl. By the way, from the viewpoint of safety in a collision, a vehicle comes into existence which has its steering member support part S arranged in a location lower than and ahead of the steering member support part S shown in FIG. 29. In this kind of vehicle, the space in which the automotive vehicle alone has been installed heretofore is crossed by the steering member support part S. As a result, when an attempt is made to first mount the automotive air conditioner on the vehicle, and then mount the steering member support part S, the steering member support part S is interfered with the automotive air conditioner, and hence cannot be mounted. Inversely, when an attempt is made to first mount the steering member support part S on the vehicle, and then mount the automotive air conditioner, the automotive air conditioner is interfered with the steering S and hence cannot be mounted. As described above, a change in the mounting location of the steering member support part S has brought about a problem that both the air conditioner and the steering member support part S cannot be installed on the vehicle. To reduce the number of parts and to improve the work efficiency, JP 110 59 161 discloses a unit assembly including vehicular air conditioning unit, in which a part of the duct is formed by an instrument panel, attached so as to cover the vehicle chamber side of the unit assembly. However, this disclosure does not solve the above problems. The present invention has been made in view of these circumstances, and an object thereof is to provide an automotive air conditioner which can cope with a change in the mounting location of the steering member support part. Disclosure of Invention An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-accommodating portion formed in the casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-accommodating portion is a hole extending through the casing in the right-left direction of the vehicle. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-accommodating portion formed in the casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-accommodating portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a front-rear direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-accommodating portion formed in the casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-accommodating portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a vertical direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part interference-avoiding portion formed in the casing, for avoiding interference with a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part interference-avoiding portion is a hole extending through the casing in the right-left direction of the vehicle. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part interference-avoiding portion formed in the casing, for avoiding interference with a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part interference-avoiding portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a front-rear direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part interference-avoiding portion formed in the casing, for avoiding interference with a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part interference-avoiding portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a vertical direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-arranging space portion formed in the casing, for arranging therein a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-arranging space portion is a hole extending through the casing in the right-left direction of the vehicle. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-arranging space portion formed in the casing, for arranging therein a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-arranging space portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a front-rear direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-arranging space portion formed in the casing, for arranging therein a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the steering member support part-arranging space portion is a recess formed in the casing in the right-left direction of the vehicle, and wherein a width of opening of the recess in a vertical direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-accommodating portion formed in the casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the weight of the casing is substantially equally divided between front and rear halves of the vehicle with the steering member support part as a center. The automotive air conditioner according to the present invention is characterized in that the steering member support part-accommodating portion is a hole extending through the casing in the right-left direction of the vehicle. The automotive air conditioner according to the present invention is characterized in that the steering member support part-accommodating portion is a recess formed in the casing in the right-left direction of the vehicle. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part interference-avoiding portion formed in the casing, for avoiding interference with a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the weight of the casing is substantially equally divided between front and rear halves of the vehicle with the steering member support part as a center. The automotive air conditioner according to the present invention is characterized in that the steering member support part interference-avoiding portion is a hole extending through the casing in the right-left direction of the vehicle. The automotive air conditioner according to the present invention is characterized in that the steering member support part interference-avoiding portion is a recess formed in the casing in the right-left direction of the vehicle. An automotive air conditioner according to the present invention is characterized by comprising a casing having at least one of air-introducing means for introducing air, blowing means for blowing the air from the air-introducing means, cooling means for cooling the air introduced by the blowing means from the air-introducing means, heating means for heating the air introduced by the blowing means from the air-introducing means, and air-distributing means for distributing the cooled air or the heated air, and a steering member support part-arranging space portion formed in the casing, for arranging therein a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, wherein the weight of the casing is substantially equally divided between front and rear halves of the vehicle with the steering member support part as a center. The automotive air conditioner according to the present invention is characterized in that the steering member support part-arranging space portion is a hole extending through the casing in the right-left direction of the vehicle. The automotive air conditioner according to the present invention is characterized in that the steering member support part-arranging space portion is a recess formed in the casing in the right-left direction of the vehicle. Brief Description of Drawings FIG. 1 is a plan view of an automotive air conditioner according to a first embodiment of the invention; FIG. 2 is a cross-sectional view taken on line II-II in FIG. 1; FIG. 3 is a longitudinal cross-sectional view of an automotive air conditioner according to a second embodiment of the invention; FIG. 4 is a longitudinal cross-sectional view of an automotive air conditioner according to a third embodiment of the invention; FIG. 5 (a) is a view of a dividing surface of a fire panel-side part as viewed from an instrument panel side, and FIG. 5 (b) is a view of a dividing surface of an instrument panel-side part as viewed from a fire panel side; FIGS. 6 (a) to (e) are views showing cross-sectional shapes of holes; FIG. 7 is a longitudinal cross-sectional view of an automotive air conditioner according to a fourth embodiment of the invention; FIG. 8 is a longitudinal cross-sectional view of an automotive air conditioner according to a fifth embodiment of the invention; FIG. 9 is a longitudinal cross-sectional view of an automotive air conditioner according to a sixth embodiment of the invention; FIG. 10 is a longitudinal cross-sectional view of an automotive air conditioner according to a seventh embodiment of the invention; FIG. 11 is a longitudinal cross-sectional view of an automotive air conditioner according to an eighth embodiment of the invention; FIG. 12 is a longitudinal cross-sectional view of an automotive air conditioner according to a ninth embodiment of the invention; FIG. 13 is a longitudinal cross-sectional view of an automotive air conditioner according to a tenth embodiment of the invention; FIG. 14 is a longitudinal cross-sectional view of an automotive air conditioner according to an eleventh embodiment of the invention; FIG. 15 is a plan view of an automotive air conditioner according to a twelfth embodiment of the invention; FIG. 16 is a cross-sectional view taken on line XVI-XVI in FIG. 15; FIG. 17 is a longitudinal cross-sectional view of an automotive air conditioner according to a thirteenth embodiment of the invention; FIG. 18 is a cross-sectional view of an automotive air conditioner according to a fourteenth embodiment of the invention; FIG. 19 is a plan view of an automotive air conditioner according to a fifteenth embodiment of the invention; FIG. 20 is a cross-sectional view taken on line XX-XX in FIG. 19; FIG. 21 is a longitudinal cross-sectional view of an automotive air conditioner according to a sixteenth embodiment of the invention; FIG. 22 (a) is a side view of an instrument panel-side part, and FIG 22 (b) is a view of the instrument panel-side part as viewed from a fire panel side; FIG. 23 (a) is a perspective view of a rigid portion of a casing, and FIG. 23 (b) is a transverse cross-sectional view of the rigid portion; FIG. 24 is a view of an instrument panel-side part of an automotive air conditioner according to a seventeenth embodiment of the invention as viewed from a fire panel-side part; FIG. 25 is a view showing a separated state of an instrument panel module according to an eighteenth embodiment of the invention; FIG. 26 is a view showing an assembled state of an instrument panel module; FIG. 27 is a cross-sectional view of an automotive air conditioner according to a nineteenth embodiment of the invention; FIG. 28 is a cross-sectional view of an automotive air conditioner according to a twentieth embodiment of the invention; and FIG. 29 is a longitudinal cross-sectional view of a conventional automotive air conditioner. Best Mode for Carrying Out the Invention The invention will now be described in detail with reference to drawings showing preferred embodiments thereof. FIG. 1 is a plan view of an automotive air conditioner according a first embodiment of the invention, and FIG. 2 is a cross-sectional view taken on line II-II in FIG. 1. This automotive air conditioner is received in a space defined by an instrument panel IP, a cowl Ca, a fire panel Fi, and a floor panel Fl. The fire panel Fi divides between an engine room ER and a compartment R, while the floor panel Fl forms the floor of the compartment R. This automotive air conditioner and the instrument panel IP are located within the compartment R A steering member support part S is arranged at a location lower than and ahead of that of the conventional steering member support part S (see FIG. 29). This automotive air conditioner has a casing 1 formed with a recess (steering member support part-accommodating portion) 2 for receiving the steering member support part S extending in a right-left direction RL of the vehicle. The steering member support part-accommodating portion may be formed by a hole TH as shown in FIG. 4 etc., instead of the recess 2. The recess 2 or the hole TH provides a space portion for arranging the steering member support part S therein (steering member support part-arranging space portion), or a relief portion for avoiding the interference with the steering member support part S (steering member support part interference-avoiding portion). As shown in FIG. 2, the width of an opening Mo of the recess 2 in the front-rear direction of the vehicle is smaller than the maximum width of a transverse cross-sectional area of the steering member support part S. The maximum width of the transverse cross-sectional area of the steering member support part S is the length of the longest straight line of all straight lines connecting two points on the contour of the transverse cross-section. In this embodiment, the transverse cross-sectional area of the steering member support part S is circular, the diameter of the steering member support part S is the maximum width of the transverse cross-sectional area. As the shape of the transverse cross-sectional area of the steering member support part S, it is possible to contemplate, in addition to a circle, polygons, such as a rectangle and a triangle, and various other shapes. In this connection, in the case of a square, the length of a straight line connecting diagonally-opposite two corners corresponds to the maximum width of the transverse cross-sectional area, while in the case of an equilateral triangle, one side thereof corresponds to the maximum width of the transverse cross-sectional area. The casing 1 is divided into two parts, a fire panel-side part Fp and an instrument panel-side part Rp, with the recess 2 as a boundary. The recess 2 of the casing 1 has an anti-vibration lining L attached thereto for absorbing vibrations transmitted to the casing via the steering member support part when the vehicle is traveling. The dividing surface 1a of the fire panel-side part Fp and the dividing surface 1b of the instrument panel-side part are coupled to each other under pressure by means of fixing means (not shown), such as screws, via a sealing member, such as urethane resin, thereby forming a single unit of the casing 1. This structure is also common to other embodiments (except a tenth embodiment and an eleventh embodiment) including a second embodiment, described hereinafter. In FIG. 2, for convenience of explanation, the dividing surfaces 1a and 1b are shown separate from each other. The fire panel-side part Fp has a blower (blowing means) 3 and an evaporator (cooling means) 5. An intake box 4 forming part of air-introducing means is connected to the he fire panel-side part Fp. The intake box 4 is formed with an internal air-introducing port and an external air-introducing port, neither of which is shown, and an internal/external air-switching door, not shown, is provided within the intake box 4. The air-introducing means comprises the intake box 4 and the internal/external air-switching door. The blower 3 has a fan 3a for sending air introduced into the intake box to the evaporator 5. Part of a motor 3b for rotating the fan 3a protrudes out of the casing 1. The evaporator 5 is a heat exchanger for cooling air from the fan 3a. The instrument panel-side part Rp has an air-mixing door 6, a heater core (heating means) 7, and mode doors M1, M2 (air-distributing means). The air-mixing door 6 adjusts the proportion between air passing through the heater core 7 and air not passing through the same. The heater core 7 is a heat exchanger for heating air from the evaporator 5. The instrument panel-side part Rp is provided with a defroster outlet d, a vent outlet v, and a foot outlet f. The defroster outlet d and the vent outlet v are located in an upper part of the instrument panel-side part Rp, and the foot outlet f is located in a lower part of the instrument panel-side part Rp, whereby the air is distributed into the cabin space of the compartment R from the respective outlets d, v, f via ducts Dd, Dv, and a duct portion Df. The outlets d, v, f are opened and closed by the mode doors M1, M2. It should be noted that the fire panel-side part Fp and the instrument panel-side part Rp can be each divided in the right-left direction RL of the vehicle, and the left and right casing component parts constituting the fire panel-side part Fp and the instrument panel-side part Rp are fixed in the right-left direction by fixing means (not shown), such as tapping screws. This feature of the construction commonly applies to the other embodiments of the invention including the second embodiment. Next, a procedure of assembling the automotive air conditioner, the steering member support part S and so forth with a vehicle on a vehicle assembly line will be described. First, the fire panel-side part Fp and the instrument panel-side part Rp of the automotive air conditioner are mounted on the vehicle. At this time, the fire panel-side part Fp is fixed to the fire panel Fi by bolts, and a connector 9 of a refrigerant pipe 7a of the evaporator 5 is fixed to the fire panel Fi. The refrigerant pipe 7a is connected to a refrigerant pipe 7b of the engine room ER. Next, the steering member support part S is mounted on the vehicle. At this time, the steering member support part S is brought into contact with the anti-vibration lining L of the fire panel-side part Fp. At this time, a connector 10 of a hot water pipe 8a of the heater core 7 is fixed to the fire panel Fi. The hot water pipe 8a is connected to a hot water pipe 8b of the engine room ER. By joining of the instrument panel-side part Rp and the fire panel-side part Fp, one recess 2 is formed, and the steering member support part S is received in this recess 2. The steering member support part S at this time is held by the anti-vibration lining L attached to the fire panel-side part Fp and the anti-vibration lining L attached to the instrument panel-side part Rp. Finally, the instrument panel IP is laid over the automotive air conditioner, and the upper part of the instrument panel IP is screwed to the cowl Ca and the instrument panel-side part Rp, while the lower part of the instrument panel IP is screwed to the floor panel Fl. Next, the operation of the automotive air conditioner described above will be described. When the air-mixing door 6 and the mode doors M1, M2 are in respective positions indicated by solid lines, as shown in FIG. 2, a cold air bypass passage C is blocked, and all the air having passed through the evaporator 5 flows toward the heater core 7. The air is heated when passing through the heater core 7, and flows through the duct portion Df to the foot outlet f, from which it is blown into the cabin space of the compartment R. When the air-mixing door 6 and the mode door M2 are in respective positions indicated by phantom lines in FIG. 2, and the mode door M 1 is in a position indicated by solid lines in the same, the air having passed through the evaporator 5 does not pass through the heater core 7 but pass through the cold air bypass passage C to the vent outlet V, from which the air flows through the duct Dv and is blown into the cabin space of the compartment R. According to this first embodiment, since the casing 1 is formed with the recess 2 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion, even if the location of the steering member support part S is shifted to a position in which the steering member support part S crosses the space for installation of the automotive air conditioner, it is possible to mount the steering member support part S and the automotive air conditioner on the vehicle (effects (1)). Further, since the casing 1 is configured such that it can be divided into the fire panel-side part Fp and the instrument panel-side part Rp, the whole automotive air conditioner is not required to be removed from the vehicle when the maintenance is carried out, whereby the workability is improved, and the working hours and manufacturing costs can be reduced (effects (2)). For instance, in this embodiment, when maintenance is carried out for the heater core 7, it is only required to detach the instrument panel-side part Rp from the vehicle without removing the fire panel-side part Fp from the same. Therefore, it is not necessary to separate the refrigerant pipe 7a of the engine room R from the refrigerant pipe 7b of the engine room ER, nor to remove electric chords, not shown, of the floor 3, the intake box 4, etc., which reduces working hours, and manufacturing costs. Further, it is no longer necessary to drain the refrigerant, which meets the requirement of saving of resources. Further, the weight of the casing 1 is distributed in the front-rear direction BB of the vehicle with the steering member support part S as the center. Therefore, when the assembled unit of the instrument panel-side part Rp, the steering member support part S, and the fire panel-side part Fp is mounted on the vehicle, the inclination of the casing 1 suspended on the steering member support part S is smaller than the conventional one, so that the installation of the automotive air conditioner on the vehicle is facilitated, and the structure for connecting the casing 1 to the steering member support part S can be simplified since brackets and the like can be dispensed with (effects (3)). Further, since the instrument panel-side part Rp can be pulled out in one direction, it is easy to mount and remove the instrument panel-side part Rp, and no large space is required for the operations of mounting and removing the same. Further, the fire panel-side part Fp and the instrument panel-side part Rp are hard to be misaligned at the joined portion thereof, which improves the sealing property (effects (4)). Further, the fire panel-side part Fp and the instrument panel-side part Rp are configured such that the fire panel-side part Fp is commonly usable in a plurality of kinds of vehicles, and only the instrument panel-side part Rp is dedicatedly usable in a specific kind of vehicles, so that the number of steps of designing the casing can be reduced and the cost of molds or dies of the casing can be reduced (effects (5)). Further, since the casing is divided into the fire panel-side part Fp and the instrumental panel side-part Rp with the recess 2 as the boundary, the brackets and the like can be dispensed with, and the coupling of the casing 1 and the steering member support part S becomes easy (effects (6)). Since the opening Mo of the recess 62 in the front-rear direction of the vehicle is made smaller than the maximum width of the transverse cross-sectional area of the steering member support part S, the defroster outlet d and the vent outlet v are prevented from protruding toward the rear of the vehicle, whereby a required cross-sectional area of an air passage can be secured, while making the casing 31 compact (effects (7)). In this connection, in the case of a simple recess, the defroster outlet d and the vent outlet v become large, and project toward the rear of the vehicle, so that the size of the casing is increased. FIG. 3 is a longitudinal cross-sectional view of an automotive air conditioner according to the second embodiment of the invention. In FIG. 3, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the second embodiment, the steering member support part S is positioned at a location lower than the steering member support part S shown in FIG. 2, and accordingly, a recess 12 is formed in a lower portion of a casing 11 with respect to the vertical direction HL of the vehicle. According to the second embodiment, the effects (1) to (6) as described above can be obtained. FIG. 4 is a longitudinal cross-sectional view of an automotive air conditioner according to a third embodiment of the invention. FIG. 5 (a) is a view of a dividing surface of a fire panel-side part as viewed from an instrument panel side, and FIG. 5 (b) is a view of a dividing surface of an instrument panel-side part as viewed from a fire panel side. FIGS. 6 (a) to (e) are views showing cross-sectional shapes of holes. In FIG. 4, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. A casing 21 of the automotive air conditioner according to this embodiment is divided into the two parts of the fire panel-side part Fp and the instrument panel-side part Rp with a hole TH as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion as the boundary. The dividing surface 1a of the fire panel-side part Fp and the dividing surface 1b of the instrument panel-side part Rp are formed with respective semicylindrical hollow portions, and one hollow cylindrical portion 22 is formed when the two dividing surfaces 1a, 1b are joined to each other. The hollow cylindrical portion 22 forms the hole TH extending through the casing 21 in the right-left direction RL of the vehicle. The hollow cylindrical portion 22 extends in a cold air bypass passage C at a substantially intermediate location with respect to the vertical direction HL of the vehicle, so that branch passages C1, C2 are formed above and below the hollow cylindrical portion 22. It should be noted that there are other shapes of the hole TH as shown in FIGS. 6 (b) to 6 (e), in addition to that shown in FIG. 6 (a). The shapes shown in FIGS. 6 (a) to 6 (e) are circular, substantially elliptical, substantially oval, substantially droplet-shaped, and substantially wing-shaped, respectively. Further, the fire panel-side part Fp and the instrument panel-side part Rp can be each divided in the right-left direction RL of the vehicle, and these parts Fp and Rp are formed by right and left casing components 20a, 20b and right and left casing components 23a, 23b, respectively. The outer peripheral surface of the hollow cylindrical portion 22 of the instrument panel-side part Rp is formed with a projection 25 having a through hole formed therethrough. A tapping screw (fixing means) 26 inserted into the through hole connects the right and left casing components 23a, 23b in the right-left direction RL of the vehicle. The fire panel-side part Fp accommodates the fan 3a and the evaporator 5. The instrument panel-side part Rp accommodates the air-mixing doors 6a, 6b and the heater core 7. The air-mixing doors 6a, 6b are for adjusting the proportion between air passing through the heater core 7 and air not passing through the same. The air-mixing door 6a is located above the hollow cylindrical portion 22, and the air-mixing door 6b is located below the hollow cylindrical portion 22. These doors are opened and closed in respective predetermined timings. The instrument panel-side part Rp is provided with the defroster outlet d, the vent outlet v, and the foot outlet f. The defroster outlet d and the vent outlet v are located in the upper part of the instrument panel-side part Rp, and the foot outlet f is located in the lower part of the instrument panel-side part Rp. The outlets d, e, f are opened and closed by the mode doors M1, M2. The instrument panel-side part Rp has a sheet surface 24 integrally formed therewith, for the air-mixing doors 6a, 6b. When the air-mixing doors 6a, 6b and the mode doors M1, M2 are in respective positions indicated by solid lines, as shown in FIG. 4, the branch passages C1, C2 are blocked, and all the air having passed through the evaporator 5 flows through the heater core 7. The air is heated when passing through the heater core 7, and flows to the foot outlet f. By varying the degree of opening of the air-mixing door 6b, for instance, the flow rate of air passing through the heater core 7 can be adjusted to adjust the temperature of the air blown out from the foot outlet f. When the air-mixing doors 6a, 6b and the mode doors M1, M2 are in respective positions indicated by phantom lines in FIG. 4, and the air having passed through the evaporator 5 does not pass through the heater core 7 but pass through the branch passages C1, C2 to the vent outlet V. By varying the degree of opening of the air-mixing door 6b, for instance, the flow rate of air passing through the heater core 7 can be adjusted to adjust the temperature of the air blown out from the vent outlet f. According to the third embodiment, the same effects as the effects (1) to (6) described above can be obtained. The hole TH extending through the casing 21 in the right-left direction of the vehicle is employed as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion. Therefore, compared with the case in which the simple recess 12 as shown in FIG. 3 is employed, areas around the steering member support part S or a circular area surrounding the circumference of the steering member support part S can be utilized as the air passage. In this embodiment, the air passes above and below the steering member support part S. Therefore, it is possible to prevent an increase in the resistance to the flow of air through the air passage without increasing the size of the casing, and secure the performance of the air conditioner. The air cooled by the evaporator 5 is divided by the hollow cylindrical portion 22 into upper and lower streams, and the cold air bypass passage leading from the evaporator 5 to the heater core 7 can secure a large cross-sectional area, so that the resistance to the air flow can be decreased to increase the quantity of air and reduce the noise. Further, the tapping screw 26 brings the right and left casing components 23a, 23b into secure and intimate contact with each other in the vicinity of the hollow cylindrical portion 22, so that it is possible to prevent leakage of air from the joint between the right and left casing components 23a, 23b. Further, since the two air-mixing doors 6a, 6b are used, it is possible to easily carry out temperature adjustment by changing the opening and closing timing of the air-mixing doors 6a, 6b without providing a fixing guide member. Further, due to the use of the two air-mixing doors, the dimension or size of each of the air-mixing doors 6a, 6b can be made smaller than that of the air-mixing door 6 of the first embodiment. This makes it possible to make the dimension of the casing 21 in the front-rear direction BB of the casing 21 smaller than that in the first embodiment. Moreover, by forming the cross-section of the hole TH into one of shapes shown in FIGS 6 (b) to 6 (e), the flow of air through the casing 21 is made smoother than that provided when it has the shape shown in FIG. 6 (a). Furthermore, a wire harness W can be assembled with the hole TH formed by the hollow cylindrical portion 22 together with the steering member support part S. This contributes to efficient use of space. FIG. 7 is a longitudinal cross-sectional view of an automotive air conditioner according to a fourth embodiment of the invention. In FIG. 7, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first and third embodiments are designated by identical reference numerals and description thereof is omitted. In the third embodiment described above, the steering member support part S is single, but in the fourth embodiment, there are two steering member support parts S. The lower one of the two steering member support parts S is the same as that used in the third embodiment. The upper one of the two steering member support parts is located in the vicinity of the defroster outlet d, and received in the recess 32 formed in the upper portion of the casing 31, as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion. As shown in FIG. 7, the width of the opening Mo of the recess 62 in the front-rear direction of the vehicle is smaller than the maximum width of the transverse cross-sectional area of the steering member support part S. According to the fourth embodiment, the same effects as the effects (1) to (8) described above can be obtained. FIG. 8 is a longitudinal cross-sectional view of an automotive air conditioner according to a fifth embodiment of the invention. In FIG. 8, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the fifth embodiment, the hole TH formed by a hollow cylindrical portion 32 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located between the evaporator 5 and the fan 3a of the blower 3. This enables a casing 41 to be divided into the fire panel side-part Fp and the instrument panel-side part Rp in the front-rear direction BB of the vehicle with the hole TH accommodating the steering member support part S as a boundary. In this fifth embodiment, air conditioner components, such as the evaporator 5, the air-mixing door 6, the heater core 7, and the mode doors M1, M2, are classified from the viewpoint of maintainability (systematically classified) into groups, whereby the evaporator 5 and the heater core 7 belonging to piping-related air conditioner components (first group) are assigned to the fire panel-side part Fp, while the air-mixing door 6, and the mode doors M1, M2 belonging to mechanism-related air conditioner components (second group) are assigned to the instrument panel-side part Rp. According to the fifth embodiment, in addition to the effects (1) to (6) and (8) described above, it is possible to obtain the following effects: The air conditioner components including the evaporator 5, the heater core 7, and the mode doors M1, M2, are classified from the viewpoint of maintainability (systematically classified) into the piping-related group and the mechanism-related group, and air conditioner components belonging to the piping-related group are assigned to the fire panel-side part Fp, while air conditioner components belonging to the mechanism-related group are assigned to the instrument panel-side part Rp. This makes it unnecessary to remove the whole automotive air conditioner from the vehicle when the maintenance is carried out, whereby the operability is improved, and the working hours and manufacturing costs can be reduced (effects (9)). In the fifth embodiment, the air-mixing door 6 and the mode doors M1, M2 are assigned to the instrument panel-side part Rp, and the evaporator 5 and the heater core 7 are assigned to the fire panel-side part Fp. This makes it only necessary, when the maintenance of the air-mixing door 6 and the mode doors M1, M2 is carried out, that only the instrument panel-side part Rp is removed, leaving the fire panel-side part Fp on the vehicle. Therefore, it is not necessary to separate the refrigerant pipe 7a of the compartment R and the refrigerant pip 7b of the engine room ER from each other, separate a hot water pipe 8a of the compartment R and a hot water pipe 8b of the compartment ER from each other, or remove electric chords (not shown) of the blower 3. Therefore, the working hours and manufacturing costs are reduced. Further, it is unnecessary to drain the refrigerant gas and the engine coolant, which meets the requirement of saving of resources. Although in the fifth embodiment, the air conditioner components are classified from the viewpoint of maintainability (systematically classified) into groups, this is not limitative, but they may be classified from the viewpoint of ease of operation of mounting them on a vehicle, in another embodiment of the invention. Further, although in the fifth and other embodiments described above, a heat exchanger (heater core 7) is used as heating means, this is not limitative, but an electric heater, not shown, may be employed as the heating means. When the electric heater is employed in place of the heat exchanger, in the first, second, third, fourth, seventh, and eighth embodiments, the air conditioner components belonging to the piping-related group are assigned to the fire panel-side part Fp, and those belonging to other than the piping-related group are assigned to the instrument panel-side part Rp, so that this manner of assignment results in the classification into groups from the viewpoint of the maintainability (systematic classification). FIG. 9 is a longitudinal cross-sectional view of an automotive air conditioner according to a sixth embodiment of the invention. In FIG. 9, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the sixth embodiment, a hole TH formed by a hollow cylindrical portion 42 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located above the heater core 7 or within the air-mixing space. A casing 51 is made separable into a fire panel-side part Fp and an instrument panel-side part Rp with the hole TH accommodating the member S as a boundary. This sixth embodiment is the same as the fifth embodiment except for the location of the hole TH and the manner of division. According to the sixth embodiment, the same advantageous effects as provided by the fifth embodiment can be obtained. FIG. 10 is a longitudinal cross-sectional view of an automotive air conditioner according to a seventh embodiment of the invention. In FIG. 10, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the seventh embodiment, a hole TH formed by a hollow cylindrical portion 52 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located above the heater core 7 or within the air-mixing space. A casing 61 is configured such that it can be divided in the front-rear direction BB of the vehicle into a fire panel-side part Fp and an instrument panel-side part Rp with the hole TH accommodating the steering member support part S as a boundary. This seventh embodiment is the same as the sixth embodiment except for the manner of division. According to the seventh embodiment, the same advantageous effects as provided by the third embodiment can be obtained. FIG. 11 is a longitudinal cross-sectional view of an automotive air conditioner according to an eighth embodiment of the invention. In FIG. 11, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the eighth embodiment, a hole TH formed by a hollow cylindrical portion 62 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located within an air-mixing space MX where air from a cold air bypass passage C meet with air from a hot air bypass passage H. A casing 71 is configured such that it can be divided in the front-rear direction BB of the vehicle into a fire panel-side part Fp and an instrument panel-side part Rp with the hole TH accommodating the steering member support part S as a boundary. The eighth embodiment is the same as the fifth embodiment except for the location of the hole TH, the manner of division, and the location of the air-mixing door 6. According to the eighth embodiment, the same advantageous effects as provided by the first embodiment can be obtained. FIG. 12 is a longitudinal cross-sectional view of an automotive air conditioner according to a ninth embodiment of the invention. In FIG. 12, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the ninth embodiment, a hole (steering member support part-accommodating portion) TH formed by a hollow cylindrical portion 72 is located downstream of the heater core 7. A casing 81 is configured such that it can be divided in the front-rear direction BB of the vehicle into a fire panel-side part Fp and an instrument panel-side part Rp with the hole TH accommodating the steering member support part S as a boundary. In the ninth embodiment, the instrument panel-side part Rp is formed by a foot duct portion Df and foot outlet f alone. According to the ninth embodiment, the effects (1), (2), (5), and (8) described above can be obtained. FIG. 13 is a longitudinal cross-sectional view of an automotive air conditioner according to a tenth embodiment of the invention. In FIG. 13, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the tenth embodiment, a steering member support part S is located in the vicinity of a defroster outlet d. The steering member support part S is received in a recess 82 formed in a casing 91 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion. By receiving the steering member support part S in the recess 82, the interference of the steering member support part S against the casing 91 is avoided. The casing 91 is configured such that it can be divided in the front-rear direction BB of the vehicle into a fire panel-side part Fp and the instrument panel-side part Rp. According to the tenth embodiment, the effects (1) to (7), and (9) described above can be obtained. FIG. 14 is a longitudinal cross-sectional view of an automotive air conditioner according to an eleventh embodiment of the invention. In FIG. 14, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. In the eleventh embodiment, a steering member support part S is arranged in a space 92 formed in a casing 101 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion. The casing 101 is configured such that it can be divided in the front-rear direction BB of the vehicle into a fire panel-side part Fp and an instrument panel-side part Rp with the space 92 as a boundary. According to the eleventh embodiment, the same advantageous effects as provided by the first embodiment can be obtained. FIG. 15 is a plan view of an automotive air conditioner according to a twelfth embodiment of the invention. FIG. 16 is a cross-sectional view taken on line XVI - XVI in FIG. 15. In these figures, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. A blower unit 13 is connected to a blower connection port 121a formed in a side face of a casing 121. The configuration for connecting the blower unit 13 as a separate member from the casing to the side face of the casing is common to those in the thirteenth and fourteenth embodiments. A hole TH formed by a hollow cylindrical portion 112 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located above the heater core 7. The casing 121 is configured such that it can be divided into a fire panel-side part Fp and a instrument panel-side part Rp with the hole TH as a boundary. A defroster outlet d, a vent outlet v, and a foot outlet f are opened and closed by respective mode doors M1, M2, M3. According to the twelfth embodiment, the same effects as provided by the third embodiment can be obtained. FIG. 17 is a longitudinal cross-sectional view of an automotive air conditioner according to a thirteenth embodiment of the invention. In FIG. 17, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. The thirteenth embodiment is distinguished from the twelfth embodiment in that the evaporator 5 and the heater core 7 are arranged in the vertical direction HL of the vehicle, and a blower connection port 131a of a casing 131 is located below the evaporator 5. In the thirteenth embodiment, air conditioner components accommodated within the casing 131, such as the evaporator 5, the air-mixing door 6, the heater core 7, and the mode doors M1, M2, are classified from the viewpoint of maintainability (systematically classified) into groups, whereby the evaporator 5 and the heater core 7 belonging to piping-related air conditioner components (first group) are assigned to a fire panel-side part Fp, while the air-mixing door 6, and the mode doors M1, M2 belonging to mechanism-related air conditioner components (second group) are assigned to an instrument panel-side part Rp. In this respect, this embodiment is common to the fifth embodiment. A hole TH formed by a hollow cylindrical portion 122 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located within an air-mixing space MX. The casing 131 is configured such that it can be divided into the fire panel-side part Fp and the instrument panel-side part Rp with the hole TH as a boundary. The blower unit is connected to a blower connection port 131 a of the casing 131. According to the thirteenth embodiment, the same effects as provided by the fifth embodiment described above can be obtained. FIG. 18 is a longitudinal cross-sectional view of an automotive air conditioner according to a fourteenth embodiment of the invention. In FIG. 18, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. The construction of the fourteenth embodiment is substantially the same as the thirteenth embodiment. A hole TH formed by a hollow cylindrical portion 132 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located within an air-mixing space MX. A casing 141 is configured such that it can be divided into a fire panel-side part Fp and an instrument panel-side part Rp with the hole TH as a boundary. The blower unit is connected to a blower connection port 141a of the casing 141. According to the fourteenth embodiment, the same effects as provided by the fifth embodiment can be obtained. FIG. 19 is a plan view of an automotive air conditioner according to a fifteenth embodiment of the invention. FIG. 20 is a cross-sectional view taken on line XX - XX in FIG. 19. A cooler unit 14 including the evaporator 5 is connected to a cooler connection port 151a formed in a side face of a casing 151, and a blower unit 13 is connected to a blower connection port, not shown, formed in a side face of the cooler unit 14. Air conditioner components accommodated within the casing 151, such as the air-mixing doors 6a, 6b, the heater core 7 and the mode doors M1, M2, are classified from the viewpoint of maintainability (systematically classified) into groups, whereby the heater core 7 belonging to piping-related air conditioner components (first group) are assigned to a fire panel-side part Fp, while the air-mixing doors 6a, 6b, and the mode doors M1, M2 belonging to mechanism-related air conditioner components (second group) are assigned to an instrument panel-side part Rp. A hole TH formed by a hollow cylindrical portion 142 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located within an air-mixing space MX. The casing 151 is configured such that it can be divided into the fire panel-side part Fp and the instrument panel-side part Rp with the hole TH as a boundary. The blower unit 13 is connected to a blower connection port 151 a of the casing 151. According to the fifteenth embodiment, the same effects as provided by the fifth embodiment can be obtained. FIG. 21 is a longitudinal cross-sectional view of an automotive air conditioner according to a sixteenth embodiment of the invention. FIG. 22 (a) is a side view of an instrument panel-side part, and FIG 22 (b) is a view of the instrument panel-side part as viewed from a fire panel side. FIG. 23 (a) is a perspective view of a rigid portion of a casing, and FIG. 23 (b) is a transverse cross-sectional view of the rigid portion. In these figures, illustration of the instrument panel IP, the cowl Ca, the fire panel Fi, and the floor panel Fl is omitted. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. The sixteenth embodiment is common to the seventh embodiment shown in FIG. 10 except that the rigid portion 15 forming part of the steering member support part S is integrally formed with the casing 161. Now, portions of the present embodiment different from those of the FIG. 10 seventh embodiment will be described. The rigid portion 15 in the form of a meshed hollow cylinder made of a synthetic resin is integrally formed with a fire panel-side part Fp of a casing 161. The rigid portion 15 has hollow cylindrical portions 15a, 15b and a flange 16a of the hollow cylindrical portion 15a is connected to a flange 16b of the hollow cylindrical portion 15b, with screws. Air can pass through the rigid portion 15 due to the meshed structure thereof. Therefore, the resistance of the steering member support part to the flow of air can be decreased. The rigid portion 15 has opposite ends thereof closed by respective flat portions 17a, 17b, and holds one end face of a steering member support part (not shown) mounted on an instrument panel IP. According to the sixteenth embodiment, the same advantageous effects as provided by the second embodiment can be obtained, and there is no limitation in the order of operations for mounting the steering member support part and the casing (effects (10)). FIG. 24 is a view of an instrument panel-side part of an automotive air conditioner according to an seventeenth embodiment of the invention as viewed from a fire panel side. The seventeenth embodiment is distinguished from the sixteenth embodiment in that a steering member support part component part in the form of a hollow cylinder made of steel as a rigid portion 25 forming part of the steering member support part S is integrally incorporated in a casing 171. The rigid portion 25 has opposite ends thereof formed with flanges 26a, 26b. The steering member support part (not shown) mounted on the instrument panel IP also has one end thereof formed with a flange. When assemblage, both the flanges 26a, 26b are abutted on each other, and then connected with screws. According to the seventeenth embodiment, the same advantageous effects as provided by the sixteenth embodiment can be obtained. FIG. 25 is a longitudinal cross-sectional view showing a separated state of an instrument panel module according to a nineteenth embodiment of the invention, and FIG. 26 is a view showing an assembled state of the instrument panel module. The component parts common to those in the first embodiment are designated by identical reference numerals and description thereof is omitted. The eighteenth embodiment is characterized in that an instrument panel-side part Rp of a casing 181 is integrally connected to an instrument panel IP to form the module. A hole TH formed by a hollow cylindrical portion 152 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion is located above a heater core 7. The casing 181 is configured such that it can be divided into a fire panel-side part Fp and the instrument panel-side part Rp with the hole TH as a boundary. The fire panel-side part Fp and the instrument panel-side part Rp are brought into firm contact with each other via a sealing member, such as a urethane resin, and connected to each other by fixing means, such as screws. Air conditioner components accommodated within the casing 18, such as the evaporator 5, the air-mixing door 6a, the heater core 7, and the mode doors M1, M2, M3 are classified in this embodiment from the viewpoint of maintainability (systematically classified) into groups, whereby the evaporator 5 and the heater core 7 belonging to piping-related air conditioner components (first group) are assigned to the fire panel-side part Fp, while the air-mixing door 6, the mode doors M1, M2, M3, and a drive mechanism 27 belonging to mechanism-related air conditioner components (second group) are assigned to the instrument panel-side part Rp. The evaporator 5 has a refrigerant pipe 7a connected thereto, and the heater core 7 has a hot water pipe 8a connected thereto. The refrigerant pipe 7a and the hot water pipe 8a are connected to a refrigerant pipe and a hot water pipe (not shown), respectively, on a vehicle production line. The air-mixing door 6 is opened and closed by the drive mechanism 27. The drive mechanism 27 comprises a lever 28 for transmitting a driving force to the mode doors M1, M2, M3 and an actuator 29 for driving the lever 28. To remove the instrument panel-side part Rp, first, the fixing means, such as screws, connecting the instrument panel-side part Rp and the fire panel-side part Fp are removed. Then, an instrument panel IP is pulled backward in the front-rear direction BB of the vehicle. This separates the instrument panel-side part Rp from the fire panel-side part Fp. However, the fire panel-side part remains on the vehicle, and only the instrument panel-side part Rp is moved together with the instrument panel IP. Since only the instrument panel-side part alone can be removed together with the instrument panel IP while allowing the fire panel-side part Fp to remain on the vehicle, as described above, the burden on the workers can be reduced. According to the eighteenth embodiment, the above effects (1), (4), (5), (6), (8) to (9) can be obtained, and further it is possible to obtain the following effects: Since the instrument panel-side part Rp of the casing 181 is integrally connected to the instrument panel IP, the workability on the vehicle production line is improved, and at the same time the components mounted on the vehicle can be reduced in size and weight (effects (11)). Although in the above embodiments, as the best mode for carrying out the invention, there is described a case in which the casing 1, 11, and so forth, can be divided into the fire panel-side part Fp and the instrument panel-side part Rp, this is not limitative, but the invention can be applied to other cases in which those casings cannot be divided into the fire panel-side part Fp and the instrument panel-side part Rp. However, in the non-dividable type, the effects (2), (4) to (6), and (9) produced by the making the casing dividable cannot be asserted, but the other effects such as effects (1), can be obtained in the same way as the dividable type. Examples of the automotive air conditioner using the casing which cannot be divided into the fire panel-side part Fp and the instrument panel-side part Rp are shown in FIGS. 27 and 28. FIG. 27 shows a transverse cross-sectional area of an automotive air conditioner according to a nineteenth embodiment of the present invention. The parts common to those of the first embodiment are designated by identical reference numerals and description thereof is omitted. In the above embodiments including the first embodiment, the casings 1, 11, and so forth, can be divided into the fire panel-side part Fp and the instrument panel side-part Rp. In this embodiment, however, as shown in FIG. 27, a casing 191 cannot be divided into the fire panel-side part Fp and the instrument panel-side part Rp. The two types of embodiments are different only in that the casing is a dividable type or non-dividable type. However, they are also different e.g. in that the length of the passage from the mode door M1 to the defroster outlet d is long, and that the opening Mo of a recess 102 as the steering member support part-accommodating portion, the steering member support part interference-avoiding portion, or the steering member support part-arranging space portion faces toward the front of the vehicle. As shown in FIG. 27, the width of the opening Mo of the recess 102 in the vertical direction of the vehicle is smaller than the maximum width of the cross-sectional area of the steering member support part S. According to the nineteenth embodiment, in addition to the above effects (1) and (3), the following effects can be obtained: Although in the first embodiment, by preventing an increase in the length of the vehicle in the front-rear direction thereof, the casing 1 is made compact, in this nineteenth embodiment, the casing 201 is made compact by preventing an increase in the width of the casing 1 in the vertical direction of the vehicle 1. FIG. 28 shows a longitudinal cross-sectional area of an automotive air conditioner according to a twelfth embodiment of the present invention. The parts common to those of the first embodiment are designated by identical reference numerals and description thereof is omitted. In the twelfth embodiment, as shown in FIG. 28, similarly to the nineteenth embodiment, a casing 201 cannot be divided into a fire panel-side part Fp and an instrument panel-side part Rp. In the twelfth embodiment, the steering member support part S is located above the rotational shaft of the mode door M1, and between the defroster outlet d and the vent outlet v. According to the twelfth embodiment, the above effects (1), (3) and (7) can be obtained. Industrial Applicability As described heretofore, the automotive air conditioner and the instrument panel module according to the present invention are useful as an automotive air conditioner and an instrument panel module which can cope with a change in the mounting location of a steering member support part.

Claims: An automotive air conditioner comprising: a casing (1) having at least one of air-introducing means for introducing air, blowing means (3) for blowing the air from said air-introducing means, cooling means (5) for cooling the air introduced by said blowing means (3) from said air-introducing means, heating means (7) for heating the air introduced by said blowing means (3) from said air-introducing means, and air-distributing means for distributing the cooled air or the heated air; and a steering member support part-accommodating portion (2) formed in said casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, characterized in that said steering member support part-accommodating portion (2) is a hole extending through said casing (1) in the right-left direction of the vehicle. An automotive air conditioner comprising: a casing (1) having at least one of air-introducing means for introducing air, blowing means (3) for blowing the air from said air-introducing means, cooling means (5) for cooling the air introduced by said blowing means (3) from said air-introducing means, heating means (7) for heating the air introduced by said blowing means (3) from said air-introducing means, and air-distributing means for distributing the cooled air or the heated air; and a steering member support part-accommodating portion (2) formed in said casing, for accommodating a steering member support part extending in a right-left direction of a vehicleacross a space for installing the casing therein, characterized in that said steering member support part-accommodating porting is a recess formed in said casing (1) in the right-left direction of the vehicle, and wherein a width of opening of the recess in a front-rear direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member. An automotive air conditioner comprising: a casing (1) having at least one of air-introducing means for introducing air, blowing means (3) for blowing the air from said air-introducing means, cooling means (5) for colling the air introduced by said blowing means (3) form said air-introducing means, heating means (7) for heating the air introduced by said blowing means (3) from said air-introducing means, and air-distributing means for distributing the cooled air or the heated air; and a steering member support part-accommodating portion (2) formed in said casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, characterized in that said steering member support part-accommodating portion (2) is a recess formed in said casing (1) in the right-left direction of the vehicle, and wherein a width of opening of the recess in a vertical direction of the vehicle is smaller than a maximum width of a transverse cross-sectional area of the steering member support part. An automotive air conditioner comprising: a casing (1) having at least one of air-introducing means for introducing air, blowing means (3) for blowing the air from said air-introducing means, cooling means (5) for cooling the air introduced by said blowing means (3) from said air-introducing means, heating means (7) for heating the air introduced by said blowing means (3) form said air-introducing means, and air-distributing means for distributing the cooled air or the heated air; and a steering member support part-accommodating portion (2) formed in said casing, for accommodating a steering member support part extending in a right-left direction of a vehicle across a space for installing the casing therein, characterized in that the weight of said casing (1) is substantially equally divided between front and rear halves of the vehicle with the steering member support part as a center. An automotive air conditioner according to claim 4, wherein said steering member support part-accommodating portion (2) is a hole extending through said casing (1) in the right-left direction of the vehicle. An automotive air conditioner according to claim 4, wherein said steering member support part-accommodating portion (2) is a recess formed in said casing (1) in the right-left direction of the vehicle. An automotive air conditioner according to any of the foregoing claims, wherein said steering member support part-accommodating portion (2) is a steering member support part interference-avoiding portion for avoiding interference with a steering member support part extending in a right-left direction of a vehicle. An automotive air conditioner according to any of the foregoing claims, wherein said steering member support part-accommodating portion (2) is a steering member support part-arranging space portion for arranging therein a steering member support part extending in a right-left direction of a vehicle.

Inventors: ARAKI DAISUKE, KATCHI KAZUHISA, MATSUMOTO TAKEHIDE, NAGANO HIDEKI, NAKAMIGAWA TSUTOMU, NOGUCHI AKITOSHI, YAMAMOTO KATSUICHI, YANAGIDA EIJI, ARAKI, DAISUKE, KATCHI, KAZUHISA, MATSUMOTO, TAKEHIDE, NAGANO, HIDEKI, NAKAMIGAWA, TSUTOMU, NOGUCHI, AKITOSHI, YAMAMOTO, KATSUICHI, YANAGIDA, EIJI, ARAKI, Daisuke, Zexel Valeo Climate Control Corp., KATCHI, Kazuhisa, Zexel Valeo Climate Ctrl Corp., MATSUMOTO, Takehide, Bosch Automotive Systems Corp, Nagano, Hideki, Zexel Valeo Climate Control Corp., NAKAMIGAWA, Tsutomu, Zexel Valeo Climate Ctrl Corp, NOGUCHI, Akitoshi, Zexel Valeo Climate Ctrl Corp., YAMAMOTO, Katsuichi, Zexel Valeo Climate Ctrl Corp, YANAGIDA, Eiji, Zexel Valeo Climate Control Corp.
Applicants: ZEXEL VALEO CLIMATE CONTR CORP, ZEXEL VALEO CLIMATE CONTROL CORPORATION
Application year: 2001
Main classification: B60H1
IPC codes: B60H1, B62D25