JP2020175765A - Air-conditioning device for vehicle - Google Patents

Abstract

To surely suppress the fall-down of a wall part in a case without complicating a metal mold for molding, in an air-conditioning device for a vehicle.SOLUTION: An air-conditioning case 14 constituting an air-conditioning device 10 for a vehicle is composed of first and second divided cases 24, 26 which can be divided in a width direction, and an intermediate case 28, and in the air-conditioning case, blower guides 22 are arranged between the intermediate case 28 and the first and second divided cases 24, 26, respectively. First and second hooks 80, 82 are arranged at first and second connecting pieces 76, 78 extending in the width direction in the blower guides 22. Then, since the first and second hooks 80, 82 are engaged with tips of a boundary wall 38 and a guide wall 58 in the width direction which are erected in the width direction from a partitioning wall 30 of the intermediate case 28, the boundary wall 38 and the guide wall 58 are pulled up, and the fall-down of the walls is corrected so that the walls are located in prescribed positions.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle air conditioner that is mounted on a vehicle and whose temperature has been adjusted by a heat exchanger to be blown into a vehicle interior to adjust the temperature inside the vehicle interior.

Conventionally, a vehicle air conditioner mounted on a vehicle includes a case composed of two divided case bodies molded from a resin material and having an air passage inside. Such a case structure is for guiding the air flowing upward from the downstream side of the installation space where the heat exchanger for heating is installed inside the case, for example, as disclosed in Patent Document 1. It has a wall part. The wall portions rise from the inner wall in the width direction of the split case body and are provided so as to face each other at predetermined intervals so as to form a pair, and an air passage through which air flows is provided between them.

Further, between one wall portion facing each other and the other wall portion, a connecting member for connecting the top portions serving as the tips of the wall portions is provided so as to be substantially orthogonal to the extending direction of the wall portions. By the connecting member formed in, the collapse of the wall portion at the time of molding the case is suppressed, and the air passage provided between the wall portions is maintained at a desired passage cross-sectional area.

JP-A-2002-12017

However, in the case structure as described above, since the connecting member is integrally formed on the top of the wall portion where the case is most likely to fall, an undercut occurs when the case is die-cut during molding, resulting in gold. There is a problem that the mold becomes complicated and the manufacturing cost increases.

The present invention has been made in consideration of the above problems, and provides an air conditioner for a vehicle capable of reliably suppressing the collapse of a wall portion in a case without complicating a mold. The purpose.

In order to achieve the above object, the embodiment of the present invention includes a case having an air passage inside and being divisible in the width direction, and a blower guide arranged so as to face the passage inside the case. A wall portion forming a passage is formed in one of the divided case portions of the case, and the widthwise end portion of the wall portion on the side of the other divided case portion connected to the one divided case portion is provided. In a vehicle air conditioner in which a fitting portion that fits with the other split case portion is formed.
The blower guide is provided with a hook portion that is sandwiched between the wall portions of one and the other split case and is bent so as to abut on one wall portion on the side opposite to the side on which the blower guide is attached.

According to the present invention, a case constituting a vehicle air conditioner is formed so as to be freely split in the width direction, and a wall portion forming a passage is formed in one of the divided case portions of the case. The other split case portion is fitted to one split case portion via a fitting portion formed at the widthwise end of the wall portion, and a blower guide arranged so as to face the passage inside the case is provided. It is provided with a hook part that is sandwiched between the wall part of one split case and the wall part of the other split case, and is bent so as to abut on one wall part on the side opposite to the side where the blower guide is attached. ing.

Therefore, even if the wall portion forming the passage is tilted when molding the case, the hook portion of the blower guide is brought into contact with the blower guide on one wall portion on the opposite side to the other wall portion. The fall can be suitably corrected so that is in a predetermined position.

As a result, with a simple configuration in which the blower case is provided with a hook portion, the wall portion constituting the passage is suppressed from falling and maintained at a predetermined position without complicating the shape of the mold for molding the case. This makes it possible to reduce the manufacturing cost as compared with the conventional air conditioner for vehicles.

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

That is, in a vehicle air conditioner having a case that can be freely divided in the width direction, even if the wall portion constituting the passage occurs when the case is molded, the hook portion of the blower guide provided in the case is unilaterally used. By bringing the wall portion into contact with the air-conditioning guide on the opposite side to the air-conditioning guide, the tilt can be suitably corrected so that the other wall portion is in a predetermined position. As a result, with a simple configuration in which the blower case is provided with a hook portion, the wall portion can be suppressed from falling and maintained at a predetermined position without complicating the shape of the mold for molding the case.

1A is an overall sectional view of the vehicle air conditioner according to the embodiment of the present invention, FIG. 1B is an enlarged sectional view in the vicinity of the first hook in FIG. 1A, and FIG. 1C is a second in FIG. 1A. It is an enlarged sectional view in the vicinity of a hook. 2A is an enlarged front view of the vicinity of the first hook, FIG. 2B is an enlarged front view of the vicinity of the second hook, and FIG. 2C is a cross-sectional view taken along the line IIC-IIC of FIG. 2D is a cross-sectional view taken along the IID-IID line of FIG. 2B.

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

As shown in FIG. 1A, the vehicle air conditioner 10 includes an air conditioner case (case) 14 that constitutes each air passage 12 and an evaporator 16 that is arranged inside the air conditioner case 14 to cool air. It includes a heating unit 18 for heating air, a door mechanism 20 for switching the flow of air flowing through each passage 12, and a blower guide 22 arranged in the passage 12 for guiding the flow of air.

The air conditioning case 14 includes first and second divided cases (divided case portions) 24 and 26 that can be divided in the width direction orthogonal to the front-rear direction (arrows A and B directions) of the vehicle, and the first divided case 24 and the first. It is composed of an intermediate case 28 sandwiched between the two divided cases 26, and the inside of the air conditioning case 14 is divided into two in the width direction by a partition wall 30 formed at the center of the width of the intermediate case 28, and the partition is formed. It has a plurality of intermediate wall portions 32 erected on the outer sides (first and second divided cases 24 and 26 sides) in the width direction with respect to the wall 30.

Then, as shown in FIGS. 2A to 2D, at the tip in the width direction of the intermediate wall portion 32, a wall portion 24a extending inward in the width direction from the outer wall in the width direction of the first divided case 24 and a second wall portion 24a. It has fitting portions that are fitted to the wall portions 26a extending inward in the width direction from the outer wall in the width direction of the split case 26.

Further, as shown in FIGS. 1A and 1B, above the air conditioning case 14 (in the direction of arrow C1), a vent blower port 34 for blowing air near the occupant's face in the passenger compartment and adjacent to the vent blower port 34. A defroster air outlet 36 that blows air is opened near the front window of the vehicle, and a boundary wall (wall) that is one of the intermediate wall portions 32 is provided between the vent air outlet 34 and the defroster air outlet 36. Part) 38 extends downward from between the two to separate the vent air outlet 34 and the defroster air outlet 36.

As shown in FIGS. 1B, 2A and 2C, a first engaging recess 40 cut out from the tip in the width direction toward the partition wall 30 is formed at the lower end of the boundary wall 38. .. The first engaging recess 40 is formed, for example, in a substantially rectangular shape along the extending direction of the boundary wall 38, and the first hook 80 of the blower guide 22, which will be described later, is engaged.

Further, as shown in FIG. 1A, the outer wall in the width direction on the rear side (direction of arrow B) in the first and second divided cases 24 and 26 is a heat air vent 42 that blows air near the feet of the occupants in the passenger compartment. Are formed respectively.

Then, inside the air conditioning case 14, an evaporator 16 is provided at a position on the upstream side (arrow A direction) in the air flow direction so as to straddle the first divided case 24, the intermediate case 28, and the second divided case 26. The heating units 18 are provided at positions on the downstream side (direction of arrow B) with respect to the evaporator 16 at predetermined intervals. The heating unit 18 is composed of, for example, a heater core 44 that heats air by circulating hot water inside, and an electric heater 46 that is provided on the downstream side (direction of arrow B) of the heater core 44 and generates heat under an energizing action. To.

Further, inside the air conditioning case 14, the first and second divided cases 24 and 26 and the intermediate case 28 are provided with divided ribs 48 at positions between the evaporator 16 and the heater core 44, respectively, and the divided ribs 48 are provided. Is between the pair of air mix doors 62a and 62b in the door mechanism 20 described later, and partitions the warm air passage 52 described later in the vertical direction (arrows C1 and C2 directions).

Further, inside the air conditioning case 14, a cold air passage 50 in which the evaporator 16 is arranged, a hot air passage 52 formed on the downstream side of the cold air passage 50 and in which the heating unit 18 is arranged, and a downstream of the cold air passage 50 are provided. On the side, the bypass passage 54 that bypasses the heating unit 18, the cold air that is provided behind the heating unit 18 and flows through the bypass passage 54, and the hot air that flows through the warm air passage 52 merge to control the temperature. A confluence portion 56 for wind control is formed.

Further, the upper part of the electric heater 46 constituting the heating unit 18 is one of the intermediate wall portions 32 and extends in the front-rear direction (arrows A and B directions), and the air passing through the heating unit 18 is directed to the downstream side. A guide wall (wall portion) 58 is provided to guide the air.

As shown in FIGS. 1A, 1C, 2B and 2D, the guide wall 58 protrudes outward in the width direction (first and second divided cases 24 and 26 sides) by a predetermined height from the partition wall 30. The downstream end is formed so as to incline downward (in the direction of arrow C2), and the vicinity of the downstream end is from the widthwise tips on the first and second divided cases 24 and 26. A second engaging recess 60 cut out toward the partition wall 30 side is formed. The second engaging recess 60 is formed, for example, in a substantially rectangular shape along the extending direction of the guide wall 58, and the second hook 82 of the blower guide 22 described later is engaged with the second engaging recess 60.

As shown in FIG. 1A, the door mechanism 20 includes a pair of air mix doors 62a and 62b provided between the evaporator 16 and the heating unit 18 and adjusting the mixing ratio of cold air and hot air, and a vent air outlet 34. It includes a vent switching door 64 for adjusting the air blowing state from the air to the vehicle interior, a defroster switching door 66 for switching the air blowing state from the defroster air vent 36 to the front window, and a heat switching door 68 for opening and closing the heat air vent 42. Then, the heat switching door 68 switches the blowing state of the temperature-controlled air to the heat blowing port 42 under the rotating action.

The air mix doors 62a and 62b are meshed with each other via gears of a pair of shafts 70 rotatably supported by the air conditioning case 14, and the shafts 70 are rotated by a driving force from a driving means (not shown). , The air mix doors 62a and 62b are slidably displaced in the vertical direction (arrows C1 and C2 directions). Seal members 72 are provided at the upper and lower ends of the air mix doors 62a and 62b, respectively.

Then, one air mix door 62a is provided so as to be above the split rib 48 (in the direction of arrow C1), and the other air mix door 62b is provided so as to be below the split rib 48, and the cold air passage 50 is provided. The distribution ratio of the cold air flowing through the air to the hot air passage 52 side is adjusted.

The blower guide 22 is formed by molding from, for example, a resin material, is provided between the first and second divided cases 24 and 26 and the intermediate case 28, respectively, and the upper end thereof faces the defroster blower port 36 and It is arranged so that the lower end is inclined by a predetermined angle so as to face the heat switching door 68. The blower guide 22 is held in the width direction by being sandwiched between the wall portion 24a of the first division case 24 and the wall portion 26a of the second division case 26 and the partition wall 30 of the intermediate case 28. ..

As shown in FIGS. 1A to 2D, the ventilation guide 22 has, for example, a set of partition walls 74 that partition the air flow in the passage in the width direction in the air conditioning case 14, and the partition walls 74 are connected to each other. Are connected by the first and second connecting pieces 76 and 78 in a substantially parallel state at predetermined intervals in the width direction.

The first connection piece 76 is connected to the upper end of the blower guide 22 facing the defroster blower port 36, and is adjacent to and overlaps the boundary wall 38 of the intermediate case 28 so as to be on the vehicle front side (direction of arrow A). A first hook (hook portion) 80 projecting toward the boundary wall 38 side is formed at a central portion thereof along the width direction thereof.

The first hook 80 has a holding portion 80a that protrudes substantially at a right angle to the first connecting piece 76, is then bent at a substantially right angle toward the boundary wall 38 side, and extends substantially parallel to the first connecting piece 76. It is formed in an L-shaped cross section (see FIG. 2C). Then, the widthwise tip of the boundary wall 38 is inserted into the inside of the first hook 80, and the bent portion of the first hook 80 is inserted into the first engaging recess 40 formed at the widthwise tip. At the same time as being engaged, the holding portion 80a comes into contact with the boundary wall 38.

As a result, the boundary wall 38 is inserted between the first hook 80 and the first connecting piece 76, and the pressing portion 80a comes into contact with the boundary wall 38, so that the vehicle is positioned in the front-rear direction (arrows A and B directions). Even if the boundary wall 38 collapses when the intermediate case 28 is formed, the boundary wall 38 is raised to a predetermined position by the first hook 80 to correct the collapse. That is, as shown in FIG. 2C, the boundary wall 38 is formed by the holding portion 80a of the first hook 80 provided on the side opposite to the side where the first connecting piece 76 of the blower guide 22 is provided. It is held in a predetermined position by being sandwiched between the 76 and the 76.

Further, as shown in FIGS. 2A and 2C, the first hook 80 is housed in the first engaging recess 40 in the width direction, and the first and second split cases 24 from the widthwise tip of the boundary wall 38, Since it does not protrude toward the 26 side, the wall portion 24a of the first division case 24 and the wall portion 26a of the second division case 26 connected to the boundary wall 38 come into contact with the first hook 80. Never.

The second connection piece 78 is connected to the lower end of the blower guide 22 facing the heat switching door 68 and the merging portion 56, and is adjacent to the guide wall 58 of the intermediate case 28 so as to be on the rear side of the vehicle (direction of arrow B). A second hook (hook portion) 82 projecting toward the guide wall 58 side is formed at the central portion along the width direction thereof so as to overlap each other.

The second hook 82 has a holding portion 82a that protrudes substantially at a right angle to the second connecting piece 78, is then bent at a substantially right angle toward the guide wall 58 side, and extends substantially parallel to the second connecting piece 78. It is formed in an L-shaped cross section (see FIG. 2D). Then, the widthwise tip of the guide wall 58 is inserted into the inside of the second hook 82, and the bent portion of the second hook 82 is inserted into the second engaging recess 60 formed at the widthwise tip. At the same time as being engaged, the holding portion 82a comes into contact with the guide wall 58.

As a result, the guide wall 58 is inserted between the second hook 82 and the second connection piece 78, and the pressing portion 82a comes into contact with the guide wall 58, so that the vehicle is positioned in the front-rear direction (arrows A and B directions). Even if the guide wall 58 collapses when the intermediate case 28 is molded, the guide wall 58 is raised to a predetermined position by the second hook 82 to correct the collapse. That is, as shown in FIG. 2D, the guide wall 58 is formed by the holding portion 82a of the second hook 82 provided on the side opposite to the side on which the second connecting piece 78 of the blower guide 22 is provided. It is held in a predetermined position by being sandwiched between the 78 and the 78.

Further, since the second hook 82 is housed in the second engaging recess 60 in the width direction and does not protrude from the tip of the guide wall 58 in the width direction toward the first and second divided cases 24 and 26, The wall portion 24a of the first split case 24 and the wall portion 26a of the second split case 26 connected to the guide wall 58 do not come into contact with the second hook 82.

The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above, and its operation and action / effect will be described next.

First, based on a control signal from a controller (not shown), air is introduced into the air-conditioning case 14 by driving a blower (not shown), and this air flows along the cold air passage 50 and passes through the evaporator 16 to be cooled. To.

Then, as shown in FIG. 1A, when the pair of air mix doors 62a and 62b move toward the split rib 48 side so as to approach each other and block the upstream side of the heating unit 18, the cold air is cold air. After flowing from the passage 50 to the blower guide 22 side by bypassing the heating unit 18 along the bypass passage 54, the occupant in the passenger compartment from the vent blower port 34 opened by the vent switching door 64 above the air conditioning case 14. The air is blown to the vicinity of the face and the cooling operation is performed.

Further, in the heating mode in which the air is blown to the vicinity of the feet of the occupants in the passenger compartment, the air mix doors 62a and 62b are moved up and down by a predetermined distance so as to be separated from each other, and flow from the cold air passage 50 to the bypass passage 54. The cold air and the hot air that flows through the hot air passage 52 and is heated by the heating unit 18 flow toward the air blower guide 22 side arranged at the confluence 56 and are mixed, and after the temperature is adjusted, the heat switching door The heat is blown into the vehicle interior from the heat air outlet 42 opened by 68.

As described above, in the present embodiment, in the blower guide 22 provided inside the air conditioning case 14, the first and second hooks 80 are provided with respect to the first and second connection pieces 76 and 78 extending in the width direction. , 82, and the width of the boundary wall 38 (intermediate wall portion 32) and the guide wall 58 (intermediate wall portion 32) in which the first and second hooks 80 and 82 are erected in the width direction from the partition wall 30 of the intermediate case 28. It is configured so that it can be engaged with the directional tips (first and second engaging recesses 40 and 60).

As a result, for example, even if the boundary wall 38 and the guide wall 58 fall down when the intermediate case 28 is molded, the first and second hooks 80 and 82 provided on the blower guide 22 can be attached to the boundary wall 38 and the guide wall 58. By engaging with the widthwise end of the guide wall 58, the first and second hooks 80 and 82 can cause the boundary wall 38 and the guide wall 58 to be suitably corrected to a predetermined position. ..

As a result, with a simple configuration in which the first and second hooks 80 and 82 are provided in the blower case, the first and second hooks 80 and 82 are not complicated in the shape of the mold for molding the air conditioning case 14 including the intermediate case 28. Since the boundary wall 38 and the guide wall 58 forming the air passage can be easily and surely held in place by the second hooks 80 and 82, the manufacturing cost is reduced as compared with the conventional air conditioner for vehicles. Can be planned.

Further, since the first and second hooks 80 and 82 can suppress the change in the passage cross-sectional area caused by the collapse of the boundary wall 38 and the guide wall 58, the temperature control when mixing the cold air and the hot air flowing through the passage 12 The width is such that the wall portions 24a and 26a of the first and second divided cases 24 and 26 and the intermediate wall portion 32 of the intermediate case 28 are securely fitted with the blower guide 22 interposed therebetween. Can be connected integrally in the direction.

Therefore, it is possible to prevent a gap from being generated when the first divided case 24, the intermediate case 28, and the second divided case 26 are connected to each other due to the collapse of the boundary wall 38 and the guide wall 58, and the gap is passed through the gap. It is possible to prevent the generation of abnormal noise due to air leakage.

Further, in the vehicle air conditioner 10 described above, a set of first and second hooks 80 and 82 provided on the blower guide 22 are engaged with the boundary wall 38 and the guide wall 58 in the intermediate case 28. The configuration is such that the fall can be suppressed, but the configuration is not limited to this.

For example, the hook may be engaged with the other intermediate wall portion 32 in the intermediate case 28, or in the first and second divided cases 24 and 26 formed by molding in the same manner as the intermediate case 28. The hook may be engaged with the wall portions 24a and 26a extending in the width direction to suppress the fall. Further, the number of hooks may be appropriately set as needed. It is effective to engage the first and second hooks 80 and 82 described above with a wall portion having a short extending length and easily falling, and further, a width that becomes the top of the wall portion. It is even more effective when engaged with the directional end.

It should be noted that the vehicle air conditioner according to the present invention is not limited to the above-described embodiment, and of course, various configurations can be adopted without departing from the gist of the present invention.

10 ... Vehicle air conditioner 14 ... Air conditioning case 22 ... Blower guide 24 ... First split case 26 ... Second split case 28 ... Intermediate case 30 ... Partition wall 32 ... Intermediate wall 38 ... Boundary wall 40 ... First engaging recess 58 ... Guide wall 60 ... Second engaging recess 74 ... Partition wall 76 ... First connection piece 78 ... Second connection piece 80 ... First hook 80a, 82a ... Holding part 82 ... Second hook

Claims (1)

A case having a passage through which air flows and being split in the width direction, and a blower guide arranged inside the case so as to face the passage are provided, and one of the divided case portions of the case is provided. The wall portion forming the passage is formed in the wall, and the widthwise end portion of the wall portion on the side of the other split case portion connected to the one split case portion is fitted with the other split case portion. In a vehicle air conditioner in which a fitting portion is formed
The blower guide has a hook portion that is sandwiched between the wall portions of the one and the other split cases and bent so as to abut against the one wall portion on the side opposite to the side to which the blower guide is attached. A vehicle air conditioner to be equipped.

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