JP6926792B2 - Vehicle air conditioner - Google Patents

Description

The disclosure in this specification relates to a vehicle air conditioner including an air conditioner case formed by combining a plurality of case members.

The vehicle air conditioner disclosed in Patent Document 1 seals between the peripheral edge of the opening for inserting the piping member formed in the dash panel of the vehicle that separates the vehicle interior and the outside of the vehicle and the dash panel in the casing. It is equipped with a sealing material for this purpose. A notch located outside the peripheral edge of the opening for inserting the piping member is formed on the surface of the sealing material on the dash panel side. According to this vehicle air conditioner, the part outside the notch of the sealing material is pressed outside the opening of the dash panel, and the part inside the notch is also outside the opening of the dash panel. Since pressure welding is performed, at least a double sealing structure can be obtained. The contents of the prior art documents listed as prior art are incorporated by reference as an explanation of the technical elements in this specification.

Japanese Unexamined Patent Publication No. 2013-180646

In Patent Document 1, it is necessary to sufficiently compress the seal member so that water does not enter the vehicle interior by passing through the vehicle interior side layer located on the vehicle interior side of the notch portion in the seal member. For this purpose, it is necessary to increase the compressibility of the seal member. In order to secure the compressibility of the seal member, the thickness dimension of the entire seal member becomes large.

Further, a component matching portion in which a plurality of components are combined may be located at a portion of the air conditioning case facing the opening for pipe insertion formed in the dash panel. With this configuration, it is necessary to prevent water from entering the vehicle interior side from the outside of the vehicle interior through the parts matching portion.

An object of the disclosure in this specification is to provide a vehicle air conditioner for improving the sealability between a seal member and an air conditioner case.

The plurality of aspects disclosed herein employ different technical means to achieve their respective objectives. Further, the scope of claims and the reference numerals in parentheses described in this section are examples showing the correspondence with the specific means described in the embodiment described later as one embodiment, and limit the technical scope. is not it.

One of the disclosed vehicle air conditioners is an air conditioner case (1) that is installed in the vehicle interior side area (70) and in which the air conditioning air blown to the vehicle interior circulates inside, and the vehicle interior side area and the vehicle. With the pipes (51, 52) extending from the inside of the air conditioning case to the outside region of the passenger compartment through the through hole (7a) provided in the partition member (7) on the vehicle body side that separates the outdoor region (71). so as to have extraction unit pipe at the position corresponding to the partition wall through holes are taken out of the air conditioning case to (4b1 and 4b2), it is formed by combining a plurality of components (40, 41, 42), coupled to the air conditioning case It is provided with a parts assembly part (4) installed in the vehicle interior side region and a seal member (6) installed between the vehicle body side partition member and the parts assembly part.
The seal member is between a deformable layer (61,62) that is compressed and deformed between the vehicle body side partition member and the component assembly portion, and between the deformable layer and the component assembly portion in order to adhere the deformable layer to the component assembly portion. With an adhesive layer (60) provided in
Each of the plurality of parts has an adhesive margin surface (40c1, 41c1,) having a width dimension in which the adhesive layer adheres to the component mating portion (4c1, 4c2), which is a portion where the component is in contact with each other in the component assembly portion. It is equipped with 41c2, 42c2).

According to this vehicle air conditioner, a part assembly part in which a plurality of parts are combined is provided with a pipe take-out part extending from the inside of the air conditioner case to the outside area of the vehicle interior. Since the adhesive layer forms an adhesive margin surface having a width dimension that allows the adhesive layer to adhere to the component matching portion in the component assembly portion, it is possible to prevent water from entering the vehicle interior side region from the vehicle interior outer region through the component mating portion. can. Further, in this vehicle air conditioner, since the space between the parts assembly part and the deformed layer of the seal member can be sealed by the adhesive layer, it is possible to prevent water from passing between the parts assembly part and the seal member and to prevent water from passing between the parts assembly part and the seal member. It is possible to suppress the inundation of water. From the above, according to this vehicle air conditioner, it is possible to improve the sealability between the seal member and the air conditioner case.

It is the figure which looked at the rear of a vehicle of the air conditioner for a vehicle of 1st Embodiment. It is a partial view which showed the opening for pipe insertion and the predetermined part where the adhesive layer of a seal member adheres in the air-conditioning case of a vehicle air-conditioning apparatus. It is a partial view which showed the opening for pipe insertion and the component matching part of a plurality of case parts in an air-conditioning case. FIG. 1 is a view of the IV-IV cross section of FIG. 1 viewed in the direction of an arrow, and is a partial cross-sectional view showing a state before the seal member is compressed. It is a partial cross-sectional view which showed the state which compressed the seal member by an air conditioning case and a dash panel. It is a partial cross-sectional view which showed the state which compressed the seal member in the conventional air conditioner for a vehicle.

(First Embodiment)
The vehicle air conditioner 100 of the first embodiment will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the vehicle air conditioner 100 includes an air conditioner case 1 that forms an air passage inside and houses various functional parts. The air conditioning case 1 is formed by combining a plurality of case members. In the air-conditioning case 1, at least the first case member 2 and the second case member 3 are connected in the vertical direction at the fitting portion 30 in a portion forming a storage space for air-conditioning functional parts and an air passage through which air-conditioning air flows. Is formed by. The first case member 2 is arranged on the upper side of the vehicle, and the second case member 3 is arranged on the lower side of the vehicle. The first case member 2 and the second case member 3 form a fitting portion 30 extending in the vehicle left-right direction or the vehicle width direction. The fitting portion 30 is, for example, a portion in which a protrusion formed on the joint end face of one case member and a groove formed on the joint end face of the other case member are fitted.

The vehicle air conditioner 100 is installed, for example, in the posture shown in FIG. 1 behind the dash panel 7, which is the back side of the front portion of the vehicle interior and is a partition member on the vehicle body side that separates the engine room and the vehicle interior. The vehicle air conditioner 100 is roughly classified into a configuration in which two parts, a blower unit and an air conditioner unit, are arranged side by side on the left and right sides. The dash panel 7 is a vehicle body side partition member that separates the vehicle interior side region 70 and the vehicle interior outer region 71. The dash panel 7 is provided with a partition wall through hole 7a.

The blower unit has a function of sucking the vehicle interior air or the vehicle interior outdoor air inside the air conditioning case 1, and has an inside / outside air switching box at the top. The blower unit is equipped with an electric blower. The blower has a centrifugal multi-blade fan and a motor for driving the fan. The centrifugal multi-blade fan is located inside the scroll casing. On the downstream side of the air flow of the scroll casing, a duct portion forming a flow path extending from the outlet of the scroll casing is provided. This duct portion forms a blower passage for introducing the blown air blown from the blower into the evaporator 11. The outlet portion of the blower unit is connected to the inlet portion of the air conditioning unit by this duct portion.

The air conditioning unit incorporates an evaporator 11 which is a cooling heat exchanger, a heater core 12 which is a heating heat exchanger, an air mix door, and an air outlet switching door inside the air conditioning case 1. The air-conditioning case 1 is formed of a plurality of case members made of a resin molded product having a certain degree of elasticity and excellent strength, such as polypropylene. The plurality of case members are assembled after storing the heat exchangers of the evaporator 11 and the heater core 12 at predetermined positions, and integrally by engaging means such as snap fit, metal spring clips, fastening means such as screws, and the like. Combined to form an air conditioning case 1.

The air conditioning case 1 is integrally molded together with the scroll casing and the duct portion. A part of the scroll casing and the duct portion on the upper side of the vehicle is integrally molded by the first case member 2, and the remaining portion of the scroll casing and the duct portion on the lower side of the vehicle is integrally molded by the second case member 3.

Inside the air conditioning case 1, a part of a pipe 51 for refrigerant outflow, refrigerant inflow, etc. that connects the evaporator 11 and the expansion valve 5 is housed. The pipe 51 extends to the expansion valve 5 through the take-out portion 4b1 provided in the component mating portions 4c1 and 4c2 in the component assembly portion 4. Inside the air conditioning case 1, a part of a pipe 52 through which cooling water flowing in or out of the heater core 12 flows is housed. The pipe 52 extends to the vehicle interior outer region 71 through the take-out portion 4b2 and the partition wall through hole 7a provided in the component mating portions 4c1 and 4c2 in the component assembly portion 4. The component assembly portion 4 is formed in a shape along the periphery of the partition wall through hole 7a in the dash panel 7.

The parts matching parts 4c1 and 4c2 are case-matching parts in the parts assembling part 4 where the parts are in contact with each other. That is, the component matching portions 4c1 and 4c2 are contact portions between the combined components. The component assembly unit 4 is a portion connected to the air conditioning case 1 and is formed by combining a plurality of components. The plurality of parts are located next to the first part 40 located at the upper part, the second part 41 located below the first part 40 and combined with the first part 40, and the second part 41. It is configured to include a third component 42 combined with the second component 41. The first part 40, the second part 41, and the third part 42 are made of the same material as the first case member 2 and the second case member 3. The first part 40 is a part that is coupled to both the first case member 2 and the second case member 3. The second part 41 is a part of the second case member 3 or a part coupled to the second case member 3. The third component 42 is a component coupled only to the second component 41. The third component 42 can be attached to the second component 41 coupled to the first component 40 in a state of sandwiching the pipe 52.

As shown in FIG. 1, a seal member 6 is adhered to the component assembly portion 4. The seal member 6 has the same shape and size as the outer peripheral edge 4a of the component assembly portion 4 formed by combining the first component 40, the second component 41, and the third component 42. be. The seal member 6 is installed between the dash panel 7 and the component assembly unit 4 in a state where the vehicle air conditioner 100 is properly installed in the vehicle. With the seal member 6 adhered to the component assembly portion 4, the seal member 6 is located at a position corresponding to the take-out portion 4b1 of the pipe 51, and has a size substantially matching the take-out portion 4b1 or smaller than the take-out portion 4b1. An opening 64 is provided. The seal member 6 has a size that substantially matches the take-out portion 4b2 or is slightly smaller than the take-out portion 4b2 at a position corresponding to the take-out portion 4b2 of the pipe 52 in a state where the seal member 6 is adhered to the component assembly portion 4. The opening 65 is provided.

As shown in FIG. 3, the assembly unit in which the second component 41 and the third component 42 are combined has a lateral length equivalent to that of the first component 40, and is larger than the component matching portion 4c1 in the component assembly unit 4. It constitutes the lower part. The component assembly section 4 forms a take-out section 4b1 in the component matching section 4c1 of the first component 40 and the second component 41. The take-out portion 4b1 extends in the lateral direction in the component assembly portion 4, and the lateral length thereof is the lateral length of the component assembly portion 4, the lateral length of the first component 40, and the lateral direction of the second component 41. Less than the same length. This lateral length can also be rephrased as the vehicle width direction length.

The component matching portion 4c2 is provided so as to be located below the component matching portion 4c1. The component assembly section 4 forms two take-out sections 4b2 in the component matching section 4c2 between the second component 41 and the third component 42. The two take-out portions 4b2 are provided apart in the vertical direction in the middle of the component mating portion 4c2 extending in the vertical direction. The first component 40 is provided with an outer peripheral recess 40b corresponding to the upper half of the take-out portion 4b1 and having an outer peripheral edge recessed inward from the periphery. The second component 41 is provided with an outer peripheral recess 41b1 which corresponds to the lower half of the take-out portion 4b1 and whose outer peripheral edge is recessed inward from the periphery. The take-out portion 4b1 is formed as an elongated hole-shaped or track-shaped opening by combining the outer peripheral recess 40b and the outer peripheral recess 41b1. The component matching portion 4c1 is a portion where the first component 40 and the second component 41 provided on both sides of the take-out portion 4b1 are in contact with each other.

The second component 41 is provided with an outer peripheral recess 41b2 which corresponds to one half of the left and right sides of the take-out portion 4b2 and whose outer peripheral edge is recessed inward from the periphery. The third component 42 is provided with an outer peripheral recess 42b that corresponds to the left and right other halves of the take-out portion 4b2 and has an outer peripheral edge recessed inward from the periphery. Each take-out portion 4b2 is formed as a circular opening through which the pipe 52 can be inserted by combining the outer peripheral recess 41b2 and the outer peripheral recess 42b. The take-out part 4b1 and the take-out part 4b2 are through holes penetrating in the vehicle front-rear direction in the parts assembly part 4. The component matching portion 4c2 is formed of a portion extending in the left-right direction and a portion extending in the vertical direction.

The first component 40 includes an adhesive margin surface 40c1 to which the adhesive layer 60 of the sealing member 6 adheres to the component matching portion 4c1 which is a portion where the first component 40 and the second component 41 are in contact with each other in the component assembly unit 4. ing. The adhesive margin surface 40c1 has a strip shape extending along the component mating portion 4c1 and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the adhesive margin surface 40c1 is at least 1 mm or more in the direction orthogonal to the component mating portion 4c1. The width dimension of the adhesive margin surface 40c1 is preferably 1.5 mm or more in the direction orthogonal to the component mating portion 4c1 in consideration of the tolerance of the components.

The outer peripheral edge of the first component 40, which forms a part of the outer peripheral edge of the component assembly portion 4, is provided with an outer peripheral adhesive margin surface 40a having a width dimension to which the adhesive layer 60 adheres. The outer peripheral adhesive margin surface 40a has a strip shape extending along the outer peripheral edge of the first component 40, and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the outer peripheral adhesive margin surface 40a is such that the length in the direction orthogonal to the outer peripheral edge of the first component 40 is at least 1 mm or more. As for the width dimension of the outer peripheral adhesive margin surface 40a, if 1 mm is secured for each of the left and right sides in consideration of the variation in the finished dimension of the outer peripheral edge 63 of the sealing member 6, the length in the direction orthogonal to the outer peripheral edge of the first component 40 is 3 mm. The above is preferable. Further, the first component 40 may be configured to include an adhesive margin surface to which the adhesive layer 60 adheres along the outer peripheral recess 40b. The width dimension of the adhesive margin surface extending in a strip shape along the outer peripheral recess 40b is at least 1 mm or more.

The second component 41 includes an adhesive margin surface 41c1 to which the adhesive layer 60 adheres to the component mating portion 4c1 which is a portion where the first component 40 and the second component 41 are in contact with each other in the component assembly portion 4. The adhesive margin surface 41c1 extends adjacent to the adhesive margin surface 40c1 along the adhesive margin surface 40c1. The adhesive margin surface 41c1 has a strip shape extending along the component mating portion 4c1 and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the adhesive margin surface 41c1 is at least 1 mm or more in the direction orthogonal to the component mating portion 4c1. The width dimension of the adhesive margin surface 41c1 is preferably 1.5 mm or more in the direction orthogonal to the component mating portion 4c1 in consideration of the tolerance of the components.

The second component 41 includes an adhesive margin surface 41c2 to which the adhesive layer 60 adheres to the component mating portion 4c2, which is a portion of the component assembly portion 4 where the second component 41 and the third component 42 are in contact with each other. The adhesive margin surface 41c2 has a strip shape extending along the component mating portion 4c2, and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the adhesive margin surface 41c2 is at least 1 mm or more in the direction orthogonal to the component mating portion 4c2. The width dimension of the adhesive margin surface 41c2 is preferably 1.5 mm or more in the direction orthogonal to the component mating portion 4c2 in consideration of the tolerance of the components.

The outer peripheral edge of the second component 41, which forms a part of the outer peripheral edge of the component assembly portion 4, is provided with an outer peripheral adhesive margin surface 41a having a width dimension to which the adhesive layer 60 adheres. The outer peripheral adhesive margin surface 41a has a strip shape extending along the outer peripheral edge of the second component 41, and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the outer peripheral adhesive margin surface 41a is such that the length in the direction orthogonal to the outer peripheral edge of the second component 41 is at least 1 mm or more. As for the width dimension of the outer peripheral adhesive margin surface 41a, if 1 mm is secured for each of the left and right sides in consideration of the variation in the finished dimension of the outer peripheral edge 63 of the sealing member 6, the length in the direction orthogonal to the outer peripheral edge of the second component 41 is 3 mm. The above is preferable.

The third component 42 includes an adhesive margin surface 42c2 to which the adhesive layer 60 adheres to the component mating portion 4c2, which is a portion of the component assembly portion 4 where the second component 41 and the third component 42 are in contact with each other. The adhesive margin surface 42c2 extends adjacent to the adhesive margin surface 41c2 along the adhesive margin surface 41c2. The adhesive margin surface 42c2 has a strip shape extending along the component mating portion 4c2, and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the adhesive margin surface 42c2 is at least 1 mm or more in the direction orthogonal to the component mating portion 4c2. The width dimension of the adhesive margin surface 42c2 is preferably 1.5 mm or more in the direction orthogonal to the component mating portion 4c2 in consideration of the tolerance of the components.

The outer peripheral edge of the third component 42, which forms a part of the outer peripheral edge of the component assembly portion 4, is provided with an outer peripheral adhesive margin surface 42a having a width dimension to which the adhesive layer 60 adheres. The outer peripheral adhesive margin surface 42a has a strip shape extending along the outer peripheral edge of the third component 42, and has a width dimension for the adhesive layer 60 to adhere. The width dimension of the outer peripheral adhesive margin surface 42a is such that the length in the direction orthogonal to the outer peripheral edge of the third component 42 is at least 1 mm or more. As for the width dimension of the outer peripheral adhesive margin surface 42a, if 1 mm is secured for each of the left and right sides in consideration of the variation in the finished dimension of the outer peripheral edge 63 of the sealing member 6, the length in the direction orthogonal to the outer peripheral edge of the third component 42 is 3 mm. The above is preferable.

As shown by the thick line portion shown in FIG. 2, the seal member 6 has at least the adhesive margin surfaces 40c1, 41c1, 41c2, 42c2 provided on the component matching portions 4c1, 4c2 and the outer peripheral adhesive margin surfaces 40a, 41a, 42a. It has an adhesive part that adheres. The outer peripheral adhesive portion 6a of the seal member 6 is an adhesive portion that overlaps the outer peripheral edge 4a of the component assembly portion 4. The component joining adhesive portion 6c in the seal member 6 is an adhesive portion that overlaps the adhesive margin surface 40c1 and the adhesive margin surface 41c1. The component joining adhesive portion 6b of the seal member 6 is an adhesive portion that overlaps the adhesive margin surface 41c2 and the adhesive margin surface 42c2. The adhesive portion 6d around the pipe in the seal member 6 is an annular adhesive portion that overlaps the outer peripheral recess 41b2 and the outer peripheral recess 42b.

As shown in FIG. 3, the first component 40 has a flat surface at a portion located above the outer peripheral recess 40b, and grid-like ribs are provided at a portion other than the flat surface. Since the first component 40 needs to be reinforced by the grid-like ribs, the area of the flat surface portion is small due to the presence of the ribs, and it is difficult to secure the adhesive area between the adhesive layer 60 and the first component 40. Since the first component 40 has grid-like ribs, the adhesive margin surface 40c1 is provided at the portion forming the component matching portion 4c1 with the second component 41, so that the component matching portion 4c1 is formed by the presence of the adhesive layer 60. It prevents the ingress of water through it.

The second component 41 is provided with grid-like ribs almost entirely. Since the second component 41 needs to be reinforced by the grid-like ribs, the area of the flat surface portion is small due to the presence of the ribs, and it is difficult to secure the adhesive area between the adhesive layer 60 and the second component 41. Since the second component 41 has grid-like ribs, the adhesive margin surface 41c1 is provided at the portion forming the component matching portion 4c1 with the first component 40, so that the component matching portion 4c1 is formed by the presence of the adhesive layer 60. It prevents the ingress of water through it. Since the second component 41 has grid-like ribs, the adhesive margin surface 41c2 is provided at the portion forming the component matching portion 4c2 with the third component 42, so that the component matching portion 4c2 is formed by the presence of the adhesive layer 60. It prevents the ingress of water through it. In the third component 42, a portion to which the seal member 6 is adhered is formed by a flat surface. This flat surface constitutes an adhesive margin surface provided on the entire third component 42 to which the adhesive layer 60 adheres.

As shown in FIG. 4, the sealing member 6 has a soft layer 61 and a hard layer 62 that are compressed and deformed between the dash panel 7 and the component assembly portion 4, and an adhesive layer 60 that adheres to the component assembly portion 4. Be prepared. The soft layer 61 and the hard layer 62 form a deformable layer that is deformed by a compressive force acting between the dash panel 7 and the component assembly portion 4. The adhesive layer 60 is provided between the soft layer 61 and the component assembly 4 in order to make the deformable layer adhere to the component assembly 4. The adhesive layer 60 is integrally provided with the soft layer 61. The adhesive layer 60 can be made of a double-sided tape or an acrylic or epoxy adhesive. The soft layer 61 has a larger thickness than the hard layer 62. The hard layer 62 is configured so that the deformation rate with respect to the compressive force is smaller than that of the soft layer 61. This is realized by giving the hard layer 62 a feature that is less likely to be deformed than the soft layer 61 depending on the material and mechanical structure of the hard layer 62. The hard layer 62 is integrally provided with the soft layer 61 on the side opposite to the adhesive layer 60. The hard layer 62 is provided at a position where it comes into contact with the dash panel 7.

As shown in FIG. 5, the sealing member 6 is compressed and deformed between the dash panel 7 and the component assembly portion 4, and water from the vehicle interior outer region 71 between the air conditioning case 1 and the dash panel 7 is formed. Is prevented from invading. The hard layer 62 is made of polyethylene. Since the hard layer 62 is made of such a material, it is possible to secure a level of adhesion to the dash panel 7 that can stop water from entering the engine room during car washing or heavy rain, and it is hard. It exerts a function of suppressing inundation of water passing through the layer 62 itself. The soft layer 61 is made of urethane. Since the hard layer 62 is made of polyethylene, it has a deformation property of being compressed and slightly deformed between the dash panel 7 and the component assembly part 4. The hard layer 62 is slightly deformed between the soft layer 61 and the dash panel 7 and adheres to the dash panel 7, so that the hard layer 62 exhibits a water blocking function against high-pressure water from the vehicle interior outer region 71.

The conventional vehicle air conditioner shown in FIG. 6 includes a seal member 9 having only a deformable layer that is deformed between the air conditioner case and the dash panel 7. Since the seal member 9 has the same hardness as a whole and is deformed at the same deformation rate as a whole, the water passage rate is the same between the air conditioning case and the dash panel 7. Therefore, in the conventional air conditioner for vehicles, there is room for improvement in terms of the water blocking function between the dash panel 7 and the seal member 9. On the other hand, since the hard layer 62 has a unique deformation characteristic in the seal member 6, it exhibits an excellent water stopping function against high-pressure water from the vehicle interior outer region 71 as compared with the seal member 9 shown in FIG. .. Since the soft layer 61 is made of urethane having a higher deformation rate than the hard layer 62, it has a function of being able to adjust the dimensions with respect to the separation distance between the dash panel 7 and the component assembly portion 4. The soft layer 61 is sandwiched between the dash panel 7 and the component assembly portion 4 and is greatly deformed, so that the soft layer 61 exhibits a water blocking function against low-pressure water from the vehicle interior outer region 71. The adhesive layer 60 exhibits a water blocking function against high-pressure water from the vehicle interior outer region 71 by being in close contact with the component mating portions 4c1, 4c2 and the like between the component assembly portion 4 and the soft layer 61.

Since the conventional air conditioner for vehicles shown in FIG. 6 is deformed at the same deformation rate as a whole as described above, there is room for improvement in terms of the water blocking function between the air conditioner case and the seal member 9. On the other hand, since the adhesive layer 60 adheres to the air-conditioning case 1 side, it is possible to secure a level of adhesion with the component assembly unit 4 that can stop water from entering the engine room during car washing or heavy rain. At the same time, it exerts a function of suppressing water intrusion through the adhesive layer 60 itself. Therefore, the adhesive layer 60 exhibits an excellent water stopping function against high-pressure water from the vehicle interior outer region 71 as compared with the sealing member 9 in the conventional vehicle air conditioner.

Further, the hard layer 62 may be made of polyethylene, and the soft layer 61 may be made of a rubber sponge having a higher deformation rate than the hard layer 62. The hard layer 62 may be made of a rubber sponge, and the soft layer 61 may be made of urethane having a higher deformation rate than the hard layer 62. Further, the hard layer 62 may be formed of a rubber sponge, and the soft layer 61 may be formed of a rubber sponge configured so that the deformation rate when the same compressive force acts is larger than that of the hard layer 62. Since the rubber sponge forming the hard layer 62 forms a large number of closed cell portions, it has a function of suppressing water intrusion through the hard layer 62.

The internal configuration of the vehicle air conditioner 100 will be described. An air passage extending in the vehicle width direction is provided in the front portion of the air conditioning case 1, and air blown from the blower flows down toward the evaporator 11 in this air passage. Inside the air conditioning case 1, an evaporator 11 is arranged so as to cross the entire area of the air passage immediately after the air passage. The evaporator 11 is a cooling heat exchanger that cools the air by absorbing the latent heat of vaporization of the refrigerant flowing through the refrigeration cycle from the air.

The evaporator 11 includes, for example, a heat exchange section having a plurality of refrigerant pipes and outer fins arranged at intervals from each other, a header tank connected to both ends of the plurality of refrigerant pipes in the heat exchange section, and piping. It has a connection part. An inflow pipe in which the refrigerant as a heat medium flows into the evaporator 11 and a pipe 51 in which the refrigerant flows out of the evaporator 11 are coupled to the pipe connection portion. Header tanks are provided at both ends of the heat exchange section in the refrigerant flow direction. The inflow pipe included in the pipe 51 is located on one end side of the evaporator 11 and is connected to an inflow side header tank corresponding to a refrigerant inflow portion in the evaporator 11. The outflow pipe is located on one end side of the evaporator 11 and adjacent to the inflow side header tank, and is connected to the outflow side header tank corresponding to the refrigerant outflow portion in the evaporator 11. An insulator for preventing air leakage may be provided between each header tank and the wall portion of the air conditioning case 1.

A heater core 12 is installed on the downstream side of the air flow of the evaporator 11 or on the rear side of the vehicle. The heater core 12 reheats the cold air that has passed through the evaporator 11, and is a heat exchanger in which high-temperature engine cooling water flows inside the heater core 12 and heats the air using the cooling water as a heat source. A cold air passage is provided inside the air conditioning case 1 and behind the vehicle of the evaporator 11. Cooled cold air flows through the cold air passage through the heat exchange portion of the evaporator 11. A warm air passage is provided in a portion of the air conditioning case 1 extending from the rear side of the vehicle to the upper side of the vehicle with respect to the heater core 12. After flowing through the cold air passage, the heated hot air passes through the heater core 12 and flows through the hot air passage. An air inflow passage to the heater core 12 is opened and closed at a portion behind the evaporator 11 and in front of the heater core 12 to adjust the air volume ratio between the air passing through the heater core 12 and the air not passing through the heater core 12. An air mix door is installed.

An air mixing section is provided on the downstream side of the cold air passage and the hot air passage to combine the cold air from the cold air passage and the hot air from the heater core 12 to mix the cold air and the hot air. The air mixing section is an area within a predetermined range that communicates with both the downstream side of the cold air passage and the downstream side of the hot air passage. The conditioned air whose temperature is controlled by the air mixing section is blown out to a predetermined place in the vehicle interior through a defroster passage, a face passage, a foot passage, etc. provided further downstream.

The effects of the vehicle air conditioner 100 of the first embodiment will be described below. The vehicle air conditioner 100 is installed from the inside of the air conditioner case 1 through the partition wall through hole 7a of the dash panel 7 that separates the air conditioner case 1 installed in the vehicle interior side region 70 from the vehicle interior side region 70 and the vehicle interior outer region 71. It is provided with pipes 51 and 52 extending to the vehicle interior outer region 71. The vehicle air conditioner 100 is a component formed by combining a plurality of components so that the pipes 51 and 52 have take-out portions 4b1 and 4b2 taken out of the air conditioner case 1 at positions corresponding to the partition wall through holes 70a. The assembly unit 4 is provided. The vehicle air conditioner 100 includes a seal member 6 installed between the dash panel 7 and the component assembly unit 4. The seal member 6 is provided between the deformable layer that is compressed and deformed between the dash panel 7 and the component assembly unit 4, and between the deformable layer and the component assembly unit 4 in order to adhere the deformable layer to the component assembly unit 4. It has an adhesive layer 60 and the like. Each of the plurality of parts has an adhesive margin surface 40c1, 41c1, 41c2 having a width dimension in which the adhesive layer 60 adheres to the component mating portions 4c1, 4c2, which are the portions where the parts are in contact with each other in the component assembly portion 4. It has 42c2.

According to the vehicle air-conditioning device 100, the parts assembly unit 4 in which a plurality of parts are combined is provided with the take-out portions 4b1 and 4b2 of the pipes extending from the inside of the air-conditioning case 1 to the vehicle interior outer region 71. Since the parts matching portion 4c1 and 4c2 are formed with an adhesive margin surface having a width dimension to which the adhesive layer 60 can be adhered, water flows from the vehicle interior outer region 71 through the parts mating portions 4c1 and 4c2 to the vehicle interior side region 70. It is possible to suppress the inundation of water. Further, in the vehicle air conditioner 100, the adhesive layer 60 can seal between the component assembly portion 4 and the deformed layer of the seal member 6. With this sealing configuration, it is possible to provide a configuration in which water does not easily pass between the air conditioning case 1 and the seal member 6, and it is possible to suppress water intrusion from the vehicle interior outer region 71 to the vehicle interior side region 70. Therefore, according to the vehicle air conditioner 100, it is possible to improve the sealability between the seal member 6 and the air conditioner case 1.

As described above, the conventional vehicle air conditioner shown in FIG. 6 is deformed at the same deformation rate as a whole. Therefore, when the seal member 9 is composed of a soft layer, water is formed between the air conditioner case and the dash panel 7. It is necessary to increase the overall thickness direction dimension in order to prevent the passage of water. Further, when the seal member 9 is made of a hard layer, it can have a function of making it difficult for water to pass through, but it cannot have a function of adjusting the dimension in the thickness direction. On the other hand, the deformable layer of the seal member 6 is provided at a position where the soft layer 61 integrally provided with the adhesive layer 60 and the deformation rate with respect to the compressive force are smaller than those of the soft layer 61 and come into contact with the dash panel 7. The hard layer 62 is provided.

According to this configuration, water passes between the dash panel 7 and the seal member 6 by deforming the hard layer 62 by the compressive force acting on the seal member 6 sandwiched between the dash panel 7 and the air conditioning case 1. It is possible to provide a configuration that is difficult to do. As a result, it is possible to suppress flooding of the vehicle interior side region 70 on the dash panel 7 side. Therefore, the vehicle air conditioner 100 can improve the sealability between the seal member 6 and the air conditioner case 1 in combination with the configuration in which the parts assembly 4 and the soft layer 61 are sealed by the adhesive layer 60. ..

Further, since the soft layer 61 has a larger thickness than the hard layer 62, the soft layer 61 is deformed more than the hard layer 62. That is, the soft layer 61 has the characteristics of having a large thickness dimension and a large deformation rate, and thus has a function of greatly changing the thickness dimension of the entire sealing member 6 by the action of a compressive force. As a result, the seal member 6 can be deformed at a deformation rate according to the distance dimension between the air conditioning case 1 and the dash panel 7. Therefore, the combination of the hard layer 62 and the soft layer 61 can provide the sealing member 6 having a sealing property and a dimensional adjustment function.

The hard layer 62 is made of polyethylene, and the soft layer 61 is made of urethane. According to this configuration, by deforming polyethylene having a small deformation rate by the compressive force acting on the seal member 6, it is possible to provide a configuration in which water does not easily pass between the dash panel 7 and the seal member 6. Since the urethane soft layer deforms more than the polyethylene hard layer, it can be deformed at a deformation rate according to the distance dimension between the air conditioning case 1 and the dash panel 7. By combining the urethane layer and the polyethylene layer, it is possible to provide the sealing member 6 having a sealing property and a dimensional adjustment function.

The hard layer 62 is made of polyethylene, and the soft layer 61 is made of rubber sponge. According to this configuration, by deforming polyethylene having a small deformation rate by the compressive force acting on the seal member 6, it is possible to provide a configuration in which water does not easily pass between the dash panel 7 and the seal member 6. Since the soft layer of the rubber sponge is deformed more than the hard layer of polyethylene, it can be deformed at a deformation rate according to the distance dimension between the air conditioning case 1 and the dash panel 7. By combining the rubber sponge layer and the polyethylene layer, it is possible to provide the sealing member 6 having a sealing property and a dimensional adjustment function.

The hard layer 62 is made of rubber sponge, and the soft layer 61 is made of urethane. According to this configuration, by deforming the rubber sponge having a small deformation rate by the compressive force acting on the seal member 6, it is possible to provide a configuration in which water does not easily pass between the dash panel 7 and the seal member 6. By using a high-resilience rubber sponge for the hard layer 62, the thickness dimension of the entire sealing member 6 can be suppressed. Since the soft layer of urethane is deformed more than the hard layer of rubber sponge, it can be deformed at a deformation rate according to the distance dimension between the air conditioning case 1 and the dash panel 7. By combining the urethane layer and the rubber sponge layer, it is possible to provide the sealing member 6 having a sealing property and a dimensional adjustment function.

The hard layer 62 is formed of a rubber sponge, and the soft layer 61 is formed of a rubber sponge configured so that the deformation rate when the same compressive force is applied is larger than that of the rubber sponge of the hard layer 62. According to this configuration, the rubber sponge of the hard layer having a small deformation rate is deformed by the compressive force acting on the seal member 6, so that water does not easily pass between the dash panel 7 and the seal member 6. Can be provided. Since the rubber sponge of the soft layer has a property of being deformed more than the rubber sponge of the hard layer, it can be deformed at a deformation rate according to the distance dimension between the air conditioning case 1 and the dash panel 7. By combining two rubber sponge layers having different deformation rates, it is possible to provide a sealing member 6 having a sealing property and a dimensional adjustment function.

The plurality of parts are combined with the first part 40 and the second part 41 forming the take-out part 4b1 of the pipe 51 connecting the evaporator 11 and the expansion valve 5 and the second part 41 with respect to the heater core 12. It includes a third component 42 that forms a take-out portion 4b2 of a pipe 52 through which cooling water that flows in or out flows. According to this configuration, the take-out portion 4b1 of the pipe 51 is composed of the first part 40 and the second part 41, and the take-out part 4b2 of the pipe 52 is composed of the second part 41 and the third part 42. According to this, since the pipe 51 and the pipe 52 are taken out to the outside of the air conditioning case 1, the assembly man-hours can be suppressed. Further, it is possible to provide a vehicle air conditioner 100 capable of improving workability when taking out a plurality of pipes from the inside of the air conditioner case 1 to the outside and ensuring sealing performance in the parts matching portions 4c1 and 4c2.

The outer peripheral edges 4a of the plurality of parts forming the component assembly 4 are provided with outer peripheral adhesive margin surfaces 40a, 41a, 42a having a width dimension to which the adhesive layer 60 adheres. According to this configuration, since the outer peripheral adhesive margin surfaces 40a, 41a, 42a are provided on the outer peripheral edges 4a of the plurality of parts, water can penetrate to the adhesive margin surfaces provided on the component mating portions 4c1 and 4c2. It can be suppressed. Therefore, it is possible to provide the sealing member 6 having improved sealing performance on the outer peripheral portion by the outer peripheral adhesive margin surfaces 40a, 41a, 42a and the adhesive layer 60.

(Other embodiments)
Disclosure of this specification is not limited to the illustrated embodiments. The disclosure includes exemplary embodiments and modifications by those skilled in the art based on them. For example, the disclosure is not limited to the combination of parts and elements shown in the embodiment, and can be implemented in various modifications. Disclosure can be carried out in various combinations. The disclosure can have additional parts that can be added to the embodiment. The disclosure includes parts and elements of the embodiment omitted. Disclosures include replacements or combinations of parts, elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. The technical scope disclosed is indicated by the description of the scope of claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims.

In the above-described embodiment, the plurality of case members constituting the air conditioning case 1 are mainly the first case member 2 and the second case member 3, but the number and configuration are not limited to these.

In the above-described embodiment, the pipes 51 and 52 taken out from the take-out parts 4b1 and 4b2 of the parts assembly part 4 are the pipes connecting the evaporator 11 and the expansion valve 5 and the pipes connected to the heater core 12. However, it is not limited to such piping. The pipe may be a pipe extending from another heat exchanger or other device housed in the air conditioning case 1 to the outside of the air conditioning case 1.

In the above-described embodiment, the plurality of parts constituting the part assembly unit 4 are the first part 40, the second part 41, and the third part 42, but the parts are not limited to these parts. The plurality of parts capable of achieving the object disclosed in the specification may be two parts or four or more parts.

1 ... Air conditioning case, 4 ... Parts assembly part, 4b1, 4b2 ... Take-out part 4c1, 4c2 ... Parts matching part, 6 ... Seal member 7 ... Dash panel (vehicle body side partition wall member), 7a ... Bulk partition through hole 40 ... First part (Parts), 41 ... 2nd part (part), 42 ... 3rd part (part)
40c1, 41c1, 41c2, 42c2 ... Adhesive margins 51, 52 ... Piping, 60 ... Adhesive layer, 61 ... Soft layer (deformed layer)
62 ... Hard layer (deformed layer), 70 ... Vehicle interior side area, 71 ... Vehicle interior outside area

Claims (9)

An air-conditioning case (1) installed in the vehicle interior side area (70) and through which the air-conditioning air blown into the vehicle interior circulates.
Through the partition wall through hole (7a) provided in the vehicle body side partition wall member (7) that separates the vehicle interior side region and the vehicle interior outer region (71), the air conditioning case is extended from the inside to the vehicle interior outer region. Piping (51, 52) and
The take-out portion in which the pipe at a position corresponding to the partition wall through holes are taken out of the air conditioning case (4b1 and 4b2) to have, formed by combining a plurality of components (40, 41, 42), said air-conditioning The parts assembly part (4), which is connected to the case and installed in the vehicle interior side area,
A seal member (6) installed between the vehicle body side partition member and the component assembly portion,
With
The seal member includes a deformable layer (61, 62) that is compressed and deformed between the vehicle body side partition member and the component assembly portion, and the deformable layer for adhering the deformable layer to the component assembly portion. It has an adhesive layer (60) provided between the parts assembly and the parts.
Each of the plurality of the parts has an adhesive margin surface (adhesive margin surface) having a width dimension in which the adhesive layer adheres to the component mating portion (4c1, 4c2) which is a portion where the component and the component are in contact with each other in the component assembly portion. A vehicle air conditioner provided with 40c1, 41c1, 41c2, 42c2). The deformable layer is composed of a soft layer (61) integrally provided with the adhesive layer and a hard layer having a deformation rate with respect to a compressive force smaller than that of the soft layer and is provided at a position where it comes into contact with the vehicle body side partition member. The vehicle air conditioner according to claim 1, further comprising a layer (62). The vehicle air conditioner according to claim 2, wherein the soft layer has a thickness larger than that of the hard layer. The vehicle air conditioner according to claim 2 or 3, wherein the hard layer is formed of a rubber sponge and the soft layer is formed of urethane. The vehicle air conditioner according to claim 2 or 3, wherein the hard layer is made of polyethylene and the soft layer is made of urethane. The vehicle air conditioner according to claim 2 or 3, wherein the hard layer is made of polyethylene and the soft layer is made of a rubber sponge. The hard layer is formed of a rubber sponge, and the soft layer is formed of a rubber sponge configured so that the deformation rate when the same compressive force is applied is larger than that of the rubber sponge of the hard layer. Item 2. The vehicle air conditioner according to item 2 or 3. The plurality of the components are the first component (40) and the second component forming the take-out portion of the pipe (51) connecting the evaporator (11) and the expansion valve (5) housed in the air conditioning case. (41) and the take-out portion of the pipe (52) through which the cooling water flowing in or out of the heating heat exchanger (12) housed in the air-conditioning case in combination with the second component flows. The vehicle air conditioner according to any one of claims 1 to 7, further comprising a third component (42) to be formed. The claim that the outer peripheral edges (4a) of the plurality of parts forming the component assembly portion are provided with outer peripheral adhesive margin surfaces (40a, 41a, 42a) having a width dimension to which the adhesive layer adheres. The vehicle air conditioner according to any one of 1 to 8.

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