JP6559526B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner that is mounted on a vehicle and adjusts the temperature of the vehicle interior by blowing air, which has been temperature-adjusted by a heat exchanger in the air conditioning case, into the vehicle interior.

  2. Description of the Related Art Conventionally, a vehicle air conditioner mounted on a vehicle takes air inside and outside by an air blower into an air conditioning case in which an air passage is formed, and is cooled by an evaporator that is a cooling means and a heater core that is a heating means. After driving the heated air and the air mix door to mix in a desired mixing ratio in the air conditioning case, for example, by blowing air from a plurality of openings provided in the air conditioning case through the air duct into the vehicle interior Temperature and humidity adjustments are made.

  As disclosed in Patent Document 1, such an air conditioning case is configured to be capable of being divided in the vehicle width direction from a resin material, and rotation of a door for switching the blowing state with respect to the two divided cases. A heat exchanger such as a shaft or an evaporator is sandwiched and held, and one split case and the other split case are combined and connected to each other by screws or the like.

JP 2007-269080 A

  In recent years, for the purpose of reducing the weight of an air conditioner for a vehicle, the case wall in the air conditioning case has been thinned, and the fastening of the divided cases divided into the left and right is engaged as a claw structure from the screw fastening and connected to each other. ing.

  However, when the case wall is made thin in the vehicle air conditioner as described above, the case wall bends inward when the air conditioning case is molded, and the left and right divided cases are firmly connected only by the connection with the claw structure. Since it cannot be fastened, it has become difficult to correct the deflection of the air conditioning case. As a result, there is a case where a gap is generated at the connecting portion where the left and right divided cases are connected to each other, and internal air leaks to the outside through the gap and abnormal noise may be generated.

  In addition, when a contact portion (seal surface) with a door that opens and closes the air blowing port is formed in the vicinity of the air blowing port that blows air to the outside of the air conditioning case, the sealing surface also bends with the bending of the air conditioning case. Therefore, when the door has a minute opening away from the seal surface, the distance between the door and the seal surface differs in the vehicle width direction. Thereby, variation occurs in the amount of air flowing through the gaps described above, and abnormal noise may occur due to an increase in the flow velocity of the air blowing at the center in the width direction where bending is the largest.

  The present invention has been made in consideration of the above-described problems, and for a vehicle capable of preventing air leakage to the outside and generation of abnormal noise by reliably connecting the air-conditioning cases having a divided structure. An object is to provide an air conditioner.

To achieve the above object, the present invention provides a first split case having a first coupling end and a second split case having a second coupling end corresponding to the first coupling end. In a vehicle air conditioner comprising an air conditioning case in which an air passage is formed inside,
A locking structure for connecting the first coupling end and the second coupling end, the coupling structure being formed in the first split case and extending toward the second split case; And a claw portion formed on the second divided case and engaged with the locking frame,
An exterior member provided across the outer wall of the first divided case and the second divided case;
The exterior member has a fixed portion that is spaced a predetermined distance from the outer wall surface of the air conditioning case,
In the vicinity of the coupling end of the first divided case or the second divided case, there is a protruding portion that protrudes from the outer wall surface toward the fixed portion,
A second exterior member is provided at a position facing the exterior member across the protrusion so as to straddle the first divided case and the second divided case,
The second exterior member has a second fixing portion that is separated from the outer wall surface by a predetermined distance, and the fixing portion and the second fixing portion are fastened to the protruding portion by a fastening member.

  According to the present invention, in the vehicle air conditioner having a splitable air conditioning case, the connection structure connecting the first coupling end of the first split case and the second coupling end of the second split case. And an exterior member provided across the outer walls of the first divided case and the second divided case, the exterior member having a fixed portion spaced apart from the outer wall surface of the air conditioning case by a predetermined distance, In the vicinity of the portion, the protruding portion protruding from the outer wall surface toward the fixing portion and the fixing portion are fastened by the fastening member.

  Therefore, in the state where the first divided case and the second divided case are connected by the connecting structure, even when the outer wall of the first and second divided cases is warped inward, the fastening action of the fastening member Since the projecting portion is pulled up toward the fixed portion side of the exterior member, the warp generated in the air conditioning case can be suitably adjusted.

  As a result, it is possible to prevent a gap due to warpage from occurring between the first coupling end portion in the first split case and the second coupling end portion in the second split case, and the inside of the air conditioning case through the gap. As a result, the first split case and the second split case can be reliably connected to each other through the exterior member.

  Here, by separating the outer wall surface of the air-conditioning case and the fixing portion by a predetermined distance, for example, an adjustment margin is secured that can warp the inner side to the outside of the air-conditioning case when the fastening member is fastened.

  The air conditioning case includes an opening formed across the first divided case and the second divided case and communicating between the inside and the outside, and a door provided inside to open and close the opening. The member may be provided on the outer wall in the vicinity of the opening, and a seal surface that contacts the door may be formed on the air channel side of the outer wall facing the opening.

  This makes it possible to adjust the warpage of the sealing surface at the same time by adjusting the warping of the outer wall in the air conditioning case. For example, when the door is at a very small opening, the gap between the door and the sealing surface varies. Therefore, it is possible to prevent the generation of noise due to the variation in the interval and to suppress the variation in the air flow rate and the temperature balance so that the air can be blown into the vehicle interior at a stable air temperature.

  At this time, the outer wall does not necessarily need to be flat. Depending on the amount of air flow in the vehicle width direction and the temperature balance, the outer wall may be connected to the inside of the air conditioning case within a range in which there is no gap for air leakage from the coupling site. Alternatively, the warp may be left behind, or conversely, it may be pulled up so as to warp the outside of the air conditioning case.

  Furthermore, since the exterior member is an opening dividing member that is provided so as to face the opening and divides the opening, it is possible to adjust the warp that occurs on the outer wall of the air conditioning case using the opening dividing member. Compared with the case where it is provided separately, an increase in manufacturing cost and the number of parts can be avoided, which is preferable.

Furthermore, the air conditioning case has a second opening that is spaced from the opening by a predetermined distance along the extending direction of the first and second coupling ends, and is between the opening and the second opening. may that forms the shape of the projecting portion on the outer wall of the.

  Thus, by adjusting the protrusion of the air conditioning case together with the two first and second exterior members and the fastening member, the air conditioning case is pulled up using a single exterior member to adjust the warp. In comparison, the warp can be adjusted by raising the air-conditioning case to the exterior member side more strongly.

  Furthermore, by fixing the exterior member at the vehicle width direction end of the air-conditioning case, the exterior member is more firmly fixed to the air-conditioning case, and the air-conditioning case with the warped outer wall is more strongly moved to the exterior member side. It can be raised.

  Moreover, it is good to form a locking frame or a nail | claw part adjacent to a protrusion part, and to make the height of a protrusion part higher than a locking frame body or a nail | claw part. Thus, the other side where the protruding part is not provided by pulling up the protruding part provided in the first or second split case to the exterior member side in a state where the locking frame and the claw part are engaged. Since it is possible to pull up the divided cases simultaneously, it is possible to adjust the warpage of the first and second divided cases with a single lifting means.

  According to the present invention, the following effects can be obtained.

  That is, in the vehicle air conditioner having a splitable air conditioning case, the vehicle has a connecting structure that connects the first connecting end of the first split case and the second connecting end of the second split case, An exterior member provided across the outer wall of the first divided case and the second divided case is provided, and the outer member has a fixing portion that is separated from the outer wall surface of the air conditioning case by a predetermined distance, and the outer wall in the vicinity of the coupling end. The protruding portion and the fixing portion that protrude from the surface toward the fixing portion are fastened by the fastening member. Therefore, in the state where the first divided case and the second divided case are connected by the connecting structure, even when the outer wall of the air conditioning case is warped toward the inner side, it protrudes under the fastening action of the fastening member. Since the part is pulled up toward the fixed part side of the exterior member, the warp generated in the air conditioning case can be suitably adjusted using the exterior member.

  As a result, it is possible to prevent a gap due to warpage from occurring between the first coupling end portion in the first split case and the second coupling end portion in the second split case, and the inside of the air conditioning case through the gap. As a result, the first split case and the second split case can be reliably connected to each other through the exterior member.

1 is an overall configuration diagram of a vehicle air conditioner according to an embodiment of the present invention. 2A is an enlarged cross-sectional view showing the vicinity of the vent air outlet and the defroster air outlet in the vehicle air conditioner of FIG. 1, and FIG. 2B is an enlarged side view showing the vicinity of the vent air outlet and the defroster air outlet in the vehicle air conditioner. FIG. It is sectional drawing along the III-III line of FIG. 2A. It is a partially-omission disassembled perspective view which shows the state which decomposed | disassembled the 1st and 2nd exterior member with respect to the air-conditioning case.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates a vehicle air conditioner according to an embodiment of the present invention.

  As shown in FIG. 1, the vehicle air conditioner 10 includes an air conditioning case 12 that constitutes each passage of air, an evaporator 14 that is disposed inside the air conditioning case 12 and cools the air, and the air. It has a heater core 16 for heating and a door mechanism 18 for switching the flow of air flowing through the passages. Note that the door mechanisms 18 each rotate under the driving action of a driving unit (not shown).

  The air conditioning case 12 includes, for example, first and second divided cases 20 and 22 that are substantially symmetrical and can be divided in the width direction of the vehicle (the direction of arrow A in FIG. 3). 20 and 22 are formed in a box shape having a predetermined thickness by being molded from a resin material.

  Above the air conditioning case 12 (in the direction of arrow B), there is a vent air outlet (opening) 24 that sends air near the face of the occupant, and a defroster that adjoins the vent air outlet 24 and near the front window of the vehicle. A blower opening (opening) 26 is opened. As shown in FIG. 4, the vent air outlet 24 and the defroster air outlet 26 are opened so as to straddle the first divided case 20 and the second divided case 22 that are in the width direction (arrow A direction) of the air conditioning case 12. In addition, the vent air outlet 24 opens vertically upward (in the direction of arrow B), and the defroster air outlet 26 is inclined obliquely by a predetermined angle with respect to the vent air outlet 24 toward the vehicle rear side (in the direction of arrow D). Open in the direction.

  On the other hand, in the air conditioning case 12, a foot blower opening 28 is formed on the rear side (arrow D direction) that opens downward (arrow C direction) and blows air in the vicinity of the feet of the passenger.

  As shown in FIGS. 1 to 4, the first divided case 20 has a first portion extending in the width direction (arrow A direction) between the vent air blowing port 24 and the defroster air blowing port 26. A case wall (outer wall surface) 30 is formed, and a fixing boss (projecting portion) 32 is formed in the vicinity of the coupling end portion 20a on the second divided case 22 side. In other words, the fixing boss 32 is formed at a position that is the center in the width direction of the air conditioning case 12 in which the first divided case 20 and the second divided case 22 are combined.

  The fixing boss 32 is erected with respect to the first case wall 30, protrudes by a predetermined height in the vertical upward direction (arrow B direction), and has a circular cross-sectional main body 36 having a screw hole 34 as the center. And a pair of ribs 38 extending radially outward from the outer peripheral surface of the main body 36 and in the width direction (arrow A direction) of the first split case 20. The fixing boss 32 is formed such that the height H1 of the main body 36 with respect to the first case wall 30 is higher than the height H2 of the rib 38 (H1> H2).

  Further, as shown in FIG. 3 and FIG. 4, a locking frame body 40 having an L-shaped cross section is provided on the upper side of the first split case 20 on the coupling end 20 a side from the fixing boss 32. The locking frame body 40 extends vertically upward (in the direction of arrow B) from the first case wall 30 of the first divided case 20 and then extends in a substantially horizontal direction, and the second divided portion from the coupling end 20a. It is formed so as to protrude to the case 22 side by a predetermined length. A rectangular engaging hole 42 (see FIG. 3) is formed in the horizontal portion of the locking frame 40, and a claw portion 46, which will be described later, provided in the second divided case 22 is engaged therewith.

  On the other hand, on the upper part of the second divided case 22, the first case wall 30 extends straight along the width direction (arrow A direction) between the vent air blowing port 24 and the defroster air blowing port 26. A two-case wall (outer wall surface) 44 is formed. The second case wall 44 has a triangular cross-section projecting upward (in the direction of arrow B) in the vicinity of the coupling end portion 22a on the first split case 20 side. The claw portion 46 is formed.

  And when the 1st division | segmentation case 20 and the 2nd division | segmentation case 22 are connected, the upper end part of the said nail | claw part 46 is engaged with the engagement hole 42 of the latching frame 40 of the 1st division | segmentation case 20. As shown in FIG. As a result, the relative movement in the width direction is restricted in a state where the coupling end portions 20a and 22a are coupled to each other (see FIG. 3).

  As shown in FIGS. 1 to 2B, a first exterior member 48 that is mounted at a position facing the vent air blowing port 24 and a first exterior member 48 that is mounted to face the defroster air blowing port 26, as shown in FIGS. Two exterior members 50 are provided.

  The first exterior member 48 is formed of, for example, a resin material, extends along the width direction (arrow A direction) of the air conditioning case 12, and includes a first opening 52 that faces the vent air blowing port 24. . The first opening 52 opens in a rectangular shape that is long in the width direction.

  As shown in FIGS. 2B and 4, the first hooks 54 provided at both ends along the width direction of the first exterior member 48 are the side walls (outer walls) of the first and second divided cases 20 and 22. ) By engaging with the first claw portions 56 respectively provided on 20 b and 22 b, the first exterior body in a state where the vent air blowing port 24 and the first opening 52 are in a straight line and communicated with each other in the vertical direction. The member 48 is fixed to the upper part of the air conditioning case 12 (see FIG. 1). In other words, the first exterior member 48 functions as an opening dividing member that divides the vent air outlet 24.

  In addition, the first exterior member 48 is formed with a first fixing flange (fixed portion) 58 that protrudes toward the rear (arrow D direction) that is substantially in the center in the width direction and that is on the second exterior member 50 side. The first fixing flange 58 is formed in, for example, a rectangular cross section having a predetermined thickness, and extends in a substantially horizontal direction so as to be substantially orthogonal to the opening direction of the first opening 52, and in the center thereof. An insertion hole 60 through which a fixing screw (fastening member) 74 described later is inserted is formed.

  The first fixing flange 58 is located above the fixing boss 32 (in the direction of arrow B) when the first exterior member 48 is mounted on the air conditioning case 12, and the insertion hole 60 is connected to the screw hole 34. It arrange | positions so that it may become linear.

  The second exterior member 50 is formed of a resin material like the first exterior member 48, extends along the width direction of the air conditioning case 12 (arrow A direction), and faces the defroster blower port 26. 62. The second opening 62 opens in a rectangular shape that is long in the width direction, and is divided into four by a plurality of partition walls 64 (see FIG. 4), for example. In other words, the second exterior member 50 functions as an opening dividing member that divides the defroster air outlet 26.

  As shown in FIGS. 2B and 4, the second hooks 66 respectively provided on both sides along the width direction of the second exterior member 50 are the side walls 20 b of the first and second divided cases 20 and 22, The air-conditioning case in a state where the defroster air blowing port 26 and the second opening 62 are opened in an oblique direction inclined by a predetermined angle toward the rear by being engaged with the second claw portions 68 respectively provided on the respective 22b. 12 is fixed to the top.

  In addition, the second exterior member 50 is formed with a second fixing flange (fixed portion) 70 that protrudes toward the front (in the direction of arrow E) that is substantially in the center in the width direction and that is on the first exterior member 48 side. As shown in FIG. 4, the second fixing flange 70 is formed, for example, in a U-shaped cross section, and protrudes in a substantially horizontal direction in a state where the second exterior member 50 is attached to the air conditioning case 12. An insertion groove 72 into which a fixing screw 74 described later is inserted is formed at the center. The insertion groove 72 is open in the direction away from the second exterior member 50, that is, the first exterior member 48 side (the direction of arrow E).

  As shown in FIG. 3, when the first and second exterior members 48, 50 are attached to the air conditioning case 12, the second fixing flange 70 is located at the upper end of the rib 38 in the fixing boss 32. The first fixing flange 58 is disposed in contact with the upper surface of the second fixing flange 70 in a state where the main body portion 36 of the fixing boss 32 is inserted into the insertion groove 72.

  That is, the second fixing flange 70 is disposed between the rib 38 of the fixing boss 32 of the first divided case 20 and the first fixing flange 58 of the first exterior member 48, and the fixing The fixing screw 74 inserted into the insertion hole 60 and the insertion groove 72 is screwed into the screw hole 34 in a state where the boss 32 for insertion, the insertion groove 72 and the screw hole 34 are arranged in a straight line along the vertical direction. As a result, the first and second fixing flanges 58 and 70 are sandwiched and held between the head of the fixing screw 74 and the fixing boss 32.

  Further, as shown in FIG. 1, an evaporator 14 is housed inside the air conditioning case 12 on the front side (in the direction of arrow E), and downstream of the evaporator 14, that is, on the rear side (in the direction of arrow D). The heater core 16 is accommodated in Then, air is introduced into the air conditioning case 12 from a blower through a duct (not shown) connected to a position on the upstream side of the evaporator 14, and the air is cooled by passing through the evaporator 14, while passing through the heater core 16. As a result, the air is heated.

  Furthermore, the passage in the air conditioning case 12 includes a cold air passage 76 in which the evaporator 14 is disposed, a hot air passage 78 formed on the downstream side of the cold air passage 76 and in which the heater core 16 is disposed, and a downstream side of the cold air passage 76. A bypass passage 80 that bypasses the heater core 16, and the cold air passage 76 is connected to the hot air passage 78 via a hot air opening 82 at a substantially central portion of the air conditioning case 12, and the bypass passage via the cold air opening 84. 80.

  The door mechanism 18 is provided between the evaporator 14 and the heater core 16 and opens and closes the hot air opening 82. The door mechanism 18 is provided in the bypass passage 80 on the downstream side of the evaporator 14 and opens and closes the cold air opening 84. A second air mix door 88, a switching door 90 for switching the air blowing state of the vent air blowing port 24 and the defroster air blowing port 26, a vent door 92 for adjusting the air blowing amount from the vent air blowing port 24 to the vehicle interior, and hot air And a foot door 94 for adjusting the air blowing state from the passage 78 to the foot air outlet 28.

  The first air mix door 86 is, for example, a butterfly door in which a shielding plate extends in a direction away from each other radially outward about the rotation axis, and both ends of the rotation axis rotate to the outer wall portion of the air conditioning case 12, respectively. It is supported freely.

  And the 1st air mix door 86 is connected with the drive source which is not shown in figure at the one end part of the rotating shaft which protruded from the outer wall part of the air-conditioning case 12, for example, and rotates only the predetermined angle by transmitting the driving force. .

  The first air mix door 86 is configured so that the upper end portion approaches the evaporator 14 side and the lower end portion approaches the heater core 16 side from the fully closed state in which the upper end portion and the lower end portion are in contact with the inner wall portion of the air conditioning case 12. To turn. As a result, the hot air opening 82 opens and closes in the air conditioning case 12, and the communication state between the cold air passage 76 downstream of the evaporator 14 and the hot air passage 78 upstream of the heater core 16 is switched. Air flows through the hot air passage 78 at a predetermined flow rate.

  The second air mix door 88 is, for example, a butterfly door in which two shielding plates extend in directions away from each other about the rotation axis, like the first air mix door 86. It is provided above the first air mix door 86 (in the direction of arrow B).

  The second air mix door 88 has both ends of a rotating shaft extending along the width direction of the air conditioning case 12 rotatably supported by the outer wall portion of the air conditioning case 12 and is illustrated at one end thereof. The drive source that is not connected is connected, and the rotational driving force is transmitted, so that it rotates by a predetermined angle.

  Thereby, in the air conditioning case 12, the communication state between the cold air passage 76 formed on the downstream side of the evaporator 14 shown in FIG. 1 and the bypass passage 80 bypassing the heater core 16 is switched by opening and closing the cold air opening 84. The air flows from the cold air passage 76 to the bypass passage 80 at a predetermined flow rate.

  The switching door 90 is formed in a cantilever structure in which a single shielding plate extends radially outward with respect to a rotating shaft that is pivotally supported with respect to the air conditioning case 12, and the vent air outlet 24 is rotated under the rotating action. And the opening state of the defroster ventilation opening 26 is switched.

  The vent door 92 is provided between the switching door 90 and the vent air outlet 24, and adjusts the amount of air supplied to the vehicle interior through the vent air outlet 24 under the rotating action. The foot door 94 is provided at an opening of a foot air passage that communicates with the foot air vent 28, and switches the communication state between the foot air vent 28 and the downstream side of the heater core 16 under the rotating action.

  The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above. Next, the vehicle air conditioner 10 is disposed above the air conditioning case 12 including the first and second divided cases 20 and 22. The case where the 1st and 2nd exterior members 48 and 50 are assembled | attached is demonstrated.

  First, when the first divided case 20 and the second divided case 22 are assembled, the coupling end portions 20a and 22a that are opened to each other are brought close to each other, and the coupling end portions 20a and 22a are coupled to each other at the same time. The locking frame 40 of the split case 20 is engaged with the claw portion 46 of the second split case 22. Thereby, the 1st division | segmentation case 20 and the 2nd division | segmentation case 22 are fixed in the state couple | bonded so that the coupling | bonding end parts 20a and 22a which the mutual opening opened may be obstruct | occluded.

  Next, in a state where the air conditioning case 12 to which the first and second divided cases 20 and 22 are connected is installed so that the fixing boss 32 faces upward, first, the second exterior member 50 is placed above the defroster air outlet 26. The second hook 66 is engaged with the second claw portion 68 of the air conditioning case 12, and the main body portion 36 is inserted into the insertion groove 72.

  Finally, the first exterior member 48 is brought into contact with the upper portion of the vent air outlet 24 of the air conditioning case 12, and the first hooks 54 are respectively engaged with the first claws 56 of the air conditioning case 12. As a result, the first fixing flange 58 comes into contact with the upper surface of the second fixing flange 70.

  In addition, when the 1st case wall 30 (2nd case wall 44) of the 1st division | segmentation case 20 (2nd division | segmentation case 22) is bent below by the curvature which arose at the time of the shaping | molding, 1st and 2nd fixation The flanges 58 and 70 and the fixing boss 32 are not in contact with each other and are in a state of being separated by a predetermined distance in the vertical direction (arrow B, C direction) (see the two-dot chain line shape in FIG. 3).

  Then, the fixing screw 74 is inserted into the insertion hole 60 of the first fixing flange 58, screwed into the screw hole 34 of the fixing boss 32, and then screwed, so that the head of the fixing screw 74 is in the first position. The fixing boss 32 is pulled up to the first fixing flange 58 side, that is, upward (in the direction of arrow B) while being in contact with the upper surface of the fixing flange 58. The upper surface of the main body portion 36 of the fixing boss 32 abuts on the lower surface of the first fixing flange 58, so that the first case wall 30 of the first split case 20 is held substantially horizontally. The second case wall 44 connected via the stop frame body 40 and the claw portion 46 is also pulled up upward and is held in a substantially horizontal state.

  At this time, the rib 38 of the fixing boss 32 is pulled up to a position where it abuts on the lower surface of the second fixing flange 70, whereby the second case wall 44 is maintained in a substantially flat shape.

  Thereby, the assembly of the first and second exterior members 48 and 50 to the air conditioning case 12 is completed.

  Next, operations and effects of the vehicle air conditioner 10 assembled as described above will be described. Here, a case where a cooling operation for supplying cold air to the passenger compartment is performed will be described.

  First, based on the operation of a passenger (not shown), the first air mix door 86 is fully closed, the communication between the cold air passage 76 and the hot air passage 78 is blocked, and the second air mix door 88 is fully open. The cold air passage 76 and the bypass passage 80 communicate with each other through the cold air opening 84. Further, the switching door 90 shown in FIG. 1 is turned to the defroster air outlet 26 side so that the vent air outlet 24 and the bypass passage 80 are in communication with each other.

  As a result, the air supplied from the blower (not shown) to the air conditioning case 12 and cooled by the evaporator 14 circulates from the cool air passage 76 to the vent air outlet 24 opened through the bypass passage 80 and to the vicinity of the occupant's face in the passenger compartment. Is blown.

  As described above, in the present embodiment, in the vehicle air conditioner 10 having the air conditioning case 12 that can be divided in the width direction, the first and second division cases 20 and 22 are straddled over the first and second division cases 20 and 22. The second exterior members 48 and 50 are mounted, and a fixing screw 74 is inserted through the first fixing flange 58 of the first split case 20 and the second fixing flange 70 of the second split case 22. In a state where the first divided case 20 and the second divided case 22 are connected, they are screwed into the screw holes 34 of the fixing boss 32 arranged below the first and second fixing flanges 58 and 70. The first and second case walls 30, 44 of the first and second divided cases 20, 22 can be fixed by pulling them upward toward the first and second exterior members 48, 50. .

  Therefore, even when the first and second case walls 30 and 44 of the air conditioning case 12 are warped downward due to thinning, the first and second exterior members 48 and 50 are screwed and assembled, The warp of the first and second case walls 30 and 44 can be suitably adjusted by pulling up the center in the width direction of the first and second case walls 30 and 44 in the air conditioning case 12.

  As a result, it is possible to prevent a gap due to warpage from occurring between the coupling end 20a of the first split case 20 and the coupling end 22a of the second split case 22, and through the gap from the air conditioning case 12 inside. At the same time, the first divided case 20 and the second divided case 22 can be reliably connected via the first and second exterior members 48 and 50.

  In addition, the first and second case walls 30 and 44 of the air conditioning case 12 and the first and second fixing flanges 58 and 70 of the first and second exterior members 48 and 50 are in the vertical direction (the directions of arrows B and C). ) So that the first and second case walls 30 and 44 (fixing bosses 32) are lifted up freely with respect to the first and second fixing flanges 58 and 70. can do.

  In other words, by separating the first and second case walls 30 and 44 of the air conditioning case 12 and the first and second fixing flanges 58 and 70 by a predetermined distance, for example, when the fixing screw 74 is fastened, ) Is adjusted to allow the warpage to the outside (upward) of the air conditioning case 12.

  Furthermore, when the sealing surfaces of the vent door 92 and the switching door 90 are inside the first and second split cases 20 and 22 that have warped due to thinning, warpage of the upper portions of the first and second split cases 20 and 22 is performed. It is possible to adjust the warpage of the sealing surface by adjusting the. Therefore, for example, when the switching door 90 or the vent door 92 is fully closed, it can be surely brought into contact with the sealing surface, and at the same time, air leakage can be prevented, and at the same time, the generation of noise due to the air leakage can be prevented. be able to.

  Further, even when the switching door 90 and the vent door 92 have a small opening distance away from the sealing surface, the gap generated between the switching door 90 and the vent door 92 is substantially constant in the width direction of the air conditioning case 12, so that even if the flow rate is high. Generation of sound can be prevented, and variation in the amount of air flow can be suppressed, so that air can be blown into the vehicle interior at a stable air temperature.

  Note that the first and second case walls 30 and 44 do not necessarily have to be substantially flat as described above. Depending on the amount of air flow in the width direction of the air conditioning case 12 and the temperature balance, Within a range where no leaking gap is generated, warping to the inner side of the air conditioning case 12 may be dared to be left, or conversely, the air conditioning case 12 may be further lifted to warp to the outside.

  Furthermore, since the first exterior member 48 attached to the vent air outlet 24 and the second exterior member 50 attached to the defroster air outlet 26 can be used to adjust the warp generated in the upper part of the air conditioning case 12, warp adjusting means. Compared with the case of providing separately, an increase in manufacturing cost and the number of parts can be avoided, which is preferable.

  Furthermore, the upper part of the air-conditioning case 12 is pulled up by using a single exterior member by fastening the upper part of the air-conditioning case 12 with the two first and second exterior members 48 and 50 and the fixing screw 74. The first and second case walls 30 and 44 of the air conditioning case 12 can be pulled up more strongly than in the case of adjusting the warpage.

  Further, the first and second exterior members 48, 50 are fixed to the air conditioning case 12 on the outer side in the width direction by first and second hooks 54, 66 provided at both ends in the width direction. The first and second exterior members 48 and 50 are more firmly fixed to the air conditioning case 12, and the first and second case walls 30 and 44 are more likely to be pulled upward (in the direction of arrow B). Can be powerful.

  Further, the first divided case 20 and the second divided case 22 are connected in the width direction under the engaging action of the locking frame body 40 and the claw portion 46, whereby the fixing boss 32 of the first divided case 20 is obtained. Since the second divided case 22 not provided with the fixing boss 32 is also lifted together with the first and second exterior members 48 and 50 (in the direction of arrow B), The pulling means can adjust the downward warping (in the direction of arrow C) of the first and second divided cases 20 and 22, which is preferable.

  Furthermore, as shown in FIG. 3, the height H2 of the fixing boss 32 from the first case wall 30 is set higher than the height H3 of the locking frame body 40 and the claw portion 46 of the second divided case 22, respectively. By setting the locking frame body 40 and the claw portion 46 so as to be higher (H2> H3) and adjacent to the fixing boss 32, the first and second exterior members 48, 50 side When the fixing boss 32 is pulled up, the first divided case 20 having the fixing boss 32 and the second divided case 22 connected to the first divided case 20 can be lifted together. Become.

  In addition, the vehicle air conditioner according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Vehicle air conditioner 12 ... Air-conditioning case 14 ... Evaporator 16 ... Heater core 18 ... Door mechanism 20 ... 1st division | segmentation case 20a, 22a ... Connection end part 22 ... 2nd division | segmentation case 24 ... Vent ventilation port 26 ... Defroster ventilation port 28 ... Foot vent 30 ... First case wall 32 ... Fixing boss 34 ... Screw hole 40 ... Locking frame body 44 ... Second case wall 46 ... Claw portion 48 ... First exterior member 50 ... Second exterior member 58 ... First 1 fixing flange 60 ... insertion hole 70 ... second fixing flange 72 ... insertion groove 74 ... fixing screw

Claims (6)

An air flow path is formed in the first divided case having a first coupling end and a second divided case having a second coupling end corresponding to the first coupling end. In a vehicle air conditioner equipped with an air conditioning case
A connection structure for connecting the first coupling end and the second coupling end;
The connection structure includes a locking frame formed on the first divided case and extending toward the second divided case, and a claw formed on the second divided case and engaged with the locking frame. As well as
An exterior member provided across the outer wall of the first split case and the second split case;
The exterior member has a fixed portion that is spaced a predetermined distance from the outer wall surface of the air conditioning case,
In the vicinity of the coupling end portion of the first divided case or the second divided case, there is a protruding portion that protrudes from the outer wall surface toward the fixed portion,
A second exterior member is provided at a position facing the exterior member across the protruding portion so as to straddle the first divided case and the second divided case,
The second exterior member has a second fixing portion that is spaced apart from the outer wall surface by a predetermined distance, and the fixing portion and the second fixing portion are fastened together with the protruding portion by a fastening member. A vehicle air conditioner. The vehicle air conditioner according to claim 1,
In the air conditioning case, an opening that is formed across the first divided case and the second divided case and communicates the inside and the outside,
A door provided inside and opening and closing the opening;
Have
The vehicle exterior air conditioner is characterized in that the exterior member is provided on the outer wall in the vicinity of the opening, and a seal surface that contacts the door is formed on the air channel side of the outer wall facing the opening. . The vehicle air conditioner according to claim 2,
The vehicle air conditioner is characterized in that the exterior member is an opening division member that is provided so as to face the opening and divides the opening. In the vehicle air conditioner according to claim 3,
The air conditioning case has a second opening that is spaced apart from the opening by a predetermined distance along the extending direction of the first and second coupling ends,
The vehicle air conditioner according to claim and the outer wall the protruding portion is formed on Turkey to be between the opening and the second opening. In the vehicle air conditioner according to any one of claims 1 to 4,
The vehicle air conditioner, wherein the exterior member is fixed at an end of the air conditioning case in a vehicle width direction. In the vehicle air conditioner according to any one of claims 1 to 5,
The locking frame or the claw portion is formed adjacent to the protruding portion,
The vehicle air conditioner is characterized in that a height of the protruding portion is formed higher than that of the locking frame or the claw portion.

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