JP2019026177A - Vehicular air conditioner - Google Patents

Abstract

To provide a vehicular air conditioner capable of improving seal ability between a seal member and an air conditioning case.SOLUTION: A vehicular air conditioner comprises: an air conditioning case 1; and a piping which is extended from inside of the air conditioning case 1 to a passenger compartment outside area 71 through a partition through-hole 7a of a dash panel 7 which partitions a passenger compartment inside area 70 and the passenger compartment outside area 71. The vehicular air conditioner has: a component assembly part which is formed by assembling plural components so as to have a take-out part by which the piping is taken out at a position corresponding to the partition through-hole 7a; and a seal member 6 installed between the dash panel 7 and the component assembly part. The seal member 6 has; a soft layer 61 and a hard layer 62 which are compressed and deformed between the dash panel 7 and the component assembly part; and an adhesive layer 60 provided between the soft layer 61 and the component assembly part, so as to adhere the soft layer 61 to the component assembly part. Each of the plural components has an adhesive margin surface having a width dimension for adhering the adhesive layer 60 to a component match part of the component assembly part.SELECTED DRAWING: Figure 5

Description

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

  The vehicle air conditioner disclosed in Patent Document 1 seals a gap between a peripheral portion of an opening for inserting a piping member formed on a dash panel of a vehicle that partitions the vehicle compartment from the outside of the vehicle compartment and a dash panel in the casing. It has a sealing material to do. The surface on the dash panel side of the sealing material is formed with a cutout portion located outside the peripheral edge portion of the opening for inserting the piping member. According to this vehicle air conditioner, the portion outside the notch portion of the sealing material is in pressure contact with the outside of the opening portion of the dash panel, and the portion inside the notch portion is also outside of the opening portion of the dash panel. Because of the pressure contact, at least a double seal structure is obtained. The contents of the prior art documents listed as the prior art are incorporated by reference as an explanation of the technical elements in this specification.

JP 2013-180646 A

  In Patent Document 1, it is necessary to sufficiently compress the seal member so that water does not enter the vehicle interior through the vehicle interior side layer positioned on the vehicle interior side of the cut portion in the seal member. For this purpose, it is necessary to increase the compression ratio of the seal member. In order to ensure the compression rate of the seal member, the thickness dimension of the entire seal member is increased.

  In addition, there is a case where a part aligning part combining a plurality of parts is located in a portion of the air conditioning case facing the pipe insertion opening formed in the dash panel. When it has this structure, it is necessary to suppress that water penetrate | invades into a vehicle interior side from a vehicle interior outside through a component matching part.

  An object of the disclosure in this specification is to provide a vehicle air conditioner that improves the sealing performance between a sealing member and an air conditioning case.

  A plurality of aspects disclosed in this specification adopt different technical means to achieve each purpose. In addition, the reference numerals in the parentheses described in the claims and in this section are examples showing the correspondence with the specific means described in the embodiments described later as one aspect, and limit the technical scope. is not.

One of the disclosed vehicle air conditioners includes an air conditioning case (1) that is installed in a vehicle interior side area (70), in which air conditioned air blown into the vehicle interior circulates, a vehicle interior side area, and a vehicle Pipes (51, 52) extending from the inside of the air conditioning case to the vehicle interior outside region through the partition wall through hole (7a) provided in the vehicle body side partition wall member (7) separating the vehicle exterior region (71). The component assembly portion formed by combining a plurality of components (40, 41, 42) so as to have a take-out portion (4b1, 4b2) from which the pipe is taken out of the air conditioning case at a position corresponding to the partition wall through hole (4) and a seal member (6) installed between the vehicle body side partition member and the component assembly part,
The seal member includes a deformable layer (61, 62) that is compressed and deformed between the vehicle body side partition wall member and the component assembly portion, and a space between the deformable layer and the component assembly portion to adhere the deformable layer to the component assembly portion. An adhesive layer (60) provided on
Each of the plurality of components has an adhesive margin surface (40c1, 41c1, having a width dimension to which the adhesive layer adheres to the component matching portion (4c1, 4c2) which is a portion where the component is in contact with the component assembly portion. 41c2, 42c2).

  According to this vehicle air-conditioning apparatus, the pipe assembly extending from the inside of the air-conditioning case to the vehicle compartment outside region is provided in the component assembly unit combining a plurality of components. In the parts assembly part, an adhesive margin surface with a width dimension that allows the adhesive layer to adhere is formed at the part matching part, so water is prevented from entering the vehicle interior side area through the part matching part. it can. Furthermore, since this vehicle air conditioner can seal between the component assembly part and the deformation layer of the seal member with the adhesive layer, it is possible to suppress the passage of water between the component assembly part and the seal member. Inundation of water can be suppressed. As described above, according to this vehicle air conditioner, it is possible to improve the sealing performance between the seal member and the air conditioning case.

It is the figure which looked at the air-conditioner for vehicles of a 1st embodiment to vehicles back. It is the fragmentary figure which showed the predetermined | prescribed site | part to which the opening part for piping insertion and the adhesion layer of a sealing member adhere in the air-conditioning case of a vehicle air conditioner. In an air-conditioning case, it is the fragmentary figure which showed the opening part for piping insertion, and the component matching part of several case components. It is the figure which looked at the IV-IV cross section of FIG. 1 in the arrow direction, and is the fragmentary sectional view which showed the state before compressing a sealing member. It is the fragmentary sectional view which showed the state which compressed the sealing member with the air-conditioning case and the dash panel. It is the fragmentary sectional view which showed the state which compressed the seal member in the conventional vehicle air conditioner.

(First embodiment)
The vehicle air conditioner 100 of 1st Embodiment is demonstrated with reference to FIGS. As shown in FIG. 1, the vehicle air conditioner 100 includes an air conditioning case 1 that forms an air passage therein and accommodates various functional components. The air conditioning case 1 is formed by combining a plurality of case members. The air conditioning case 1 is configured such that at least the first case member 2 and the second case member 3 are coupled in the vertical direction at the fitting portion 30 in a portion that forms an accommodation space for air conditioning functional parts and an air passage through which conditioned air flows. Is formed by. The first case member 2 is disposed on the upper side of the vehicle, and the second case member 3 is disposed on the lower side of the vehicle. The 1st case member 2 and the 2nd case member 3 form the fitting part 30 extended in a vehicle left-right direction or a vehicle width direction. The fitting portion 30 is, for example, a portion in which a protrusion formed on the coupling end surface of one case member and a groove formed on the coupling end surface 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 rear side of the front part of the vehicle interior and separates the engine room and the vehicle interior from the vehicle body side partition member. The vehicle air conditioner 100 is roughly divided into two parts, a blower unit and an air conditioning unit, arranged side by side on the left and right. The dash panel 7 is a vehicle body side partition member that partitions the vehicle interior side region 70 and the vehicle interior outside region 71. The dash panel 7 is provided with a partition wall through hole 7a.

  The blower unit has a function of sucking vehicle interior air or vehicle exterior air into the air conditioning case 1, and includes an inside / outside air switching box at the top. The blower unit includes an electric blower. The blower has a centrifugal multiblade fan and a fan driving motor. The centrifugal multiblade fan is disposed in the scroll casing. A duct portion constituting a flow path extending from the outlet of the scroll casing is provided on the air flow downstream side of the scroll casing. The duct portion forms a blow passage for introducing the blown air blown from the blower into the evaporator 11. The outlet part of the blower unit is connected to the inlet part of the air conditioning unit by this duct part.

  The air conditioning unit includes an evaporator 11 that is a cooling heat exchanger, a heater core 12 that is a heating heat exchanger, an air mix door, and an 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 elasticity to some extent and excellent in strength, such as polypropylene. The plurality of case members are assembled after the heat exchangers of the evaporator 11 and the heater core 12 are housed in predetermined positions, and are integrated by engaging means such as snap-fit, metal spring clips, fastening means such as screws, and the like. Combined to form the air conditioning case 1.

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

  Inside the air conditioning case 1, a part of a pipe 51 for refrigerant outflow, refrigerant inflow and the like connecting the evaporator 11 and the expansion valve 5 is accommodated. The pipe 51 extends to the expansion valve 5 through a take-out portion 4b1 provided in the component matching portions 4c1 and 4c2 in the component assembly portion 4. Inside the air conditioning case 1, a part of the pipe 52 through which the cooling water flowing into or out of the heater core 12 flows is accommodated. The pipe 52 extends to the vehicle interior outside region 71 through the take-out portion 4b2 provided in the component matching portions 4c1 and 4c2 and the partition wall through hole 7a 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 7 a in the dash panel 7.

  The component aligning portions 4c1 and 4c2 are case aligning portions where the components are in contact with each other in the component assembling portion 4. That is, the component matching portions 4c1 and 4c2 are contact portions between the combined components. The component assembly unit 4 is a portion coupled 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. And a third part 42 combined with the second part 41. The first component 40, the second component 41, and the third component 42 are made of the same material as the first case member 2 and the second case member 3. The first component 40 is a component that is coupled to both the first case member 2 and the second case member 3. The second component 41 is a part of the second case member 3 or a component that is coupled to the second case member 3. The third component 42 is a component that is 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 where the pipe 52 is sandwiched.

  As shown in FIG. 1, a seal member 6 is adhered to the component assembly portion 4. The outer peripheral edge 63 of 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. is there. 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. The seal member 6 is in a state where the seal member 6 is adhered to the component assembling unit 4, at a position corresponding to the extraction unit 4 b 1 of the pipe 51, substantially matching the extraction unit 4 b 1 or smaller in size than the extraction unit 4 b 1. An opening 64 is provided. The seal member 6 is in a state where the seal member 6 is adhered to the component assembling part 4, at a position corresponding to the take-out part 4 b 2 of the pipe 52, substantially matching the take-out part 4 b 2 or slightly smaller than the take-out part 4 b 2. The opening 65 is provided.

  As shown in FIG. 3, the assembly part in which the second part 41 and the third part 42 are combined has a lateral length equivalent to that of the first part 40, and the part assembly part 4 is more than the part matching part 4 c 1. It constitutes the lower part. The component assembling unit 4 forms a take-out portion 4b1 in a component matching portion 4c1 between 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 as the length. This lateral length can also be referred to as the vehicle width direction length.

  The component aligning portion 4c2 is provided so as to be positioned below the component aligning portion 4c1. The component assembling unit 4 forms two extraction portions 4b2 in the component matching portion 4c2 of the second component 41 and the third component 42. The two extraction portions 4b2 are provided apart in the vertical direction in the middle of the component matching 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 that 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 opening having a long hole shape or a track shape by combining the outer peripheral recess portion 40b and the outer peripheral recess portion 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 takeout portion 4b1 are in contact with each other.

  The second component 41 is provided with an outer peripheral recess 41b2 that corresponds to a half on 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 corresponding to a half on the other side of the left and right sides of the take-out portion 4b2 and having 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 that penetrate in the vehicle front-rear direction in the component 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 up-down direction.

  The first component 40 includes an adhesive margin surface 40c1 to which the adhesive layer 60 of the seal member 6 adheres to a component matching portion 4c1 that 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. Adhesive marginal surface 40c1 is a belt-like shape extending along component matching portion 4c1, and has a width dimension for adhesive layer 60 to adhere. As for the width dimension of the adhesive margin surface 40c1, the length in the direction orthogonal to the component matching portion 4c1 is at least 1 mm. The width dimension of the adhesive margin surface 40c1 is preferably such that the length in the direction perpendicular to the component matching portion 4c1 is 1.5 mm or more in consideration of component tolerances.

  An outer peripheral adhesive margin surface 40 a having a width dimension to which the adhesive layer 60 adheres is provided on the outer peripheral edge of the first component 40 constituting a part of the outer peripheral edge of the component assembly portion 4. The outer peripheral adhesive marginal surface 40a has a band shape extending along the outer peripheral edge of the first component 40, and has a width dimension for the adhesive layer 60 to adhere. As for the width dimension of the outer peripheral adhesive marginal surface 40a, the length in the direction orthogonal to the outer peripheral edge of the first component 40 is at least 1 mm or more. The width dimension of the outer peripheral adhesive margin surface 40a is 1 mm for each of the left and right sides in consideration of variations in the finished dimension of the outer peripheral edge 63 of the seal member 6, and the length in the direction perpendicular to the outer peripheral edge of the first component 40 is 3 mm. The above is preferable. Moreover, the structure provided with the adhesion margin surface to which the adhesion layer 60 adhere | attaches so that the 1st component 40 may follow the outer periphery recessed part 40b may be sufficient. The width dimension of the adhesive marginal surface extending in a strip shape along the outer peripheral recess 40b is at least 1 mm.

  The second component 41 includes an adhesive margin surface 41c1 to which the adhesive layer 60 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. The adhesion margin surface 41c1 extends adjacent to the adhesion margin surface 40c1 and along the adhesion margin surface 40c1. The adhesion marginal surface 41c1 has a band shape extending along the component matching portion 4c1, and has a width dimension for the adhesion layer 60 to adhere. As for the width dimension of the adhesive margin surface 41c1, the length in the direction orthogonal to the component matching portion 4c1 is at least 1 mm. As for the width dimension of the adhesive margin surface 41c1, it is preferable that the length in the direction orthogonal to the component matching portion 4c1 is 1.5 mm or more in consideration of the tolerance of the component.

  The second component 41 includes an adhesive margin surface 41c2 to which the adhesive layer 60 adheres to a component matching portion 4c2 that is a portion where the second component 41 and the third component 42 are in contact with each other in the component assembly unit 4. Adhesive marginal surface 41c2 is in the shape of a band extending along component matching portion 4c2, and has a width dimension for adhesive layer 60 to adhere. As for the width dimension of the adhesive margin surface 41c2, the length in the direction orthogonal to the component matching portion 4c2 is at least 1 mm. As for the width dimension of the adhesive margin surface 41c2, it is preferable that the length in the direction perpendicular to the component matching portion 4c2 is 1.5 mm or more in consideration of the tolerance of the component.

  An outer peripheral adhesive margin surface 41 a having a width dimension to which the adhesive layer 60 adheres is provided on the outer peripheral edge of the second component 41 that constitutes a part of the outer peripheral edge of the component assembly portion 4. The outer peripheral adhesive marginal surface 41a is 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. As for the width dimension of the outer peripheral adhesive marginal surface 41a, the length in the direction orthogonal to the outer peripheral edge of the second component 41 is at least 1 mm. The width dimension of the outer peripheral adhesive margin surface 41a is 1 mm 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 seal member 6, and the length in the direction perpendicular 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 42 c 2 to which the adhesive layer 60 adheres to the component matching portion 4 c 2, which is a portion where the second component 41 and the third component 42 are in contact with each other in the component assembly unit 4. The adhesive margin surface 42c2 extends adjacent to the adhesive margin surface 41c2 along the adhesion margin surface 41c2. Adhesive marginal surface 42c2 is in the form of a strip extending along component matching portion 4c2, and has a width dimension for adhesive layer 60 to adhere. As for the width dimension of the adhesive margin surface 42c2, the length in the direction orthogonal to the component matching portion 4c2 is at least 1 mm. The width dimension of the adhesive margin surface 42c2 is preferably 1.5 mm or more in the direction perpendicular to the component matching portion 4c2 in consideration of component tolerances.

  An outer peripheral adhesive margin surface 42 a having a width dimension to which the adhesive layer 60 adheres is provided on the outer peripheral edge of the third component 42 that constitutes a part of the outer peripheral edge of the component assembly portion 4. The outer peripheral adhesive marginal surface 42a is a strip extending along the outer peripheral edge of the third component 42, and has a width dimension for the adhesive layer 60 to adhere. As for the width dimension of the outer peripheral adhesive marginal surface 42a, the length in the direction orthogonal to the outer peripheral edge of the third component 42 is at least 1 mm. The width dimension of the outer peripheral adhesive margin surface 42a is 1 mm for each of the left and right sides in consideration of variations in the finished dimension of the outer peripheral edge 63 of the seal member 6, and 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 is at least attached to the adhesive margin surfaces 40c1, 41c1, 41c2, 42c2 and the outer peripheral adhesive margin surfaces 40a, 41a, 42a provided in the component matching portions 4c1, 4c2. It has an adhesive part that adheres. The outer peripheral adhesive portion 6 a in the seal member 6 is an adhesive portion that overlaps the outer peripheral edge 4 a of the component assembly portion 4. The component bonding 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 bonding adhesive portion 6b in the seal member 6 is an adhesive portion that overlaps the adhesive margin surface 41c2 and the adhesive margin surface 42c2. 6 d of pipe | tube surrounding adhesion parts in the sealing member 6 are the cyclic | annular adhesion parts which overlap with the outer periphery recessed part 41b2 and the outer periphery recessed part 42b.

  As shown in FIG. 3, the first component 40 has a flat surface at a position located above the outer peripheral recess 40 b, and grid-like ribs are provided at portions other than the flat surface. Since it is necessary to reinforce the first component 40 with grid-like ribs, the area of the planar portion is small due to the presence of the ribs, and it is difficult to secure the adhesion area between the adhesive layer 60 and the first component 40. Since the first part 40 has the lattice-like ribs, the part alignment part 4c1 is provided by the presence of the adhesive layer 60 by providing the adhesive surface 40c1 at the part where the part alignment part 4c1 with the second part 41 is formed. It prevents the water from entering.

  The second component 41 is provided with grid-like ribs almost entirely. Since it is necessary to reinforce the second component 41 with grid-like ribs, the area of the planar portion is small due to the presence of the ribs, and it is difficult to secure the adhesion area between the adhesive layer 60 and the second component 41. Since the second component 41 has grid-like ribs, the component aligning portion 4c1 is formed by the presence of the adhesive layer 60 by providing the adhesive surface 41c1 at the portion where the component aligning portion 4c1 with the first component 40 is formed. It prevents the water from entering. Since the second component 41 has grid-like ribs, the component aligning portion 4c2 is formed by the presence of the adhesive layer 60 by providing the adhesive surface 41c2 at the portion where the component aligning portion 4c2 with the third component 42 is formed. It prevents the water from entering. In the third component 42, a portion to which the seal member 6 is adhered is formed by a flat surface. This plane 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 seal member 6 includes a soft layer 61 and a hard layer 62 that are compressed and deformed between the dash panel 7 and the component assembly unit 4, and an adhesive layer 60 that adheres to the component assembly unit 4. Prepare. The soft layer 61 and the hard layer 62 constitute 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 unit 4 in order to adhere the deformation layer to the component assembly unit 4. The adhesive layer 60 is provided integrally with the soft layer 61. The adhesive layer 60 can be composed of a double-sided tape, an acrylic adhesive, or an epoxy adhesive. The soft layer 61 is configured to have a thickness dimension larger than that of the hard layer 62. The hard layer 62 is configured such that the deformation rate with respect to the compressive force is smaller than that of the soft layer 61. This is realized by giving a characteristic that the hard layer 62 is not easily deformed by the material and mechanical structure of the hard layer 62. The hard layer 62 is provided integrally with the soft layer 61 on the side opposite to the adhesive layer 60. The hard layer 62 is provided at a position in contact with the dash panel 7.

  As shown in FIG. 5, the seal member 6 is compressed and deformed between the dash panel 7 and the component assembly portion 4, and water from the vehicle interior outside region 71 is interposed between the air conditioning case 1 and the dash panel 7. To prevent intrusion. The hard layer 62 is made of polyethylene. Since the hard layer 62 is formed of such a material, the hard layer 62 can secure adhesion to the dash panel 7 at a level that can stop water from entering the engine room during car washing or heavy rain, and is hard. The function of suppressing flooding that passes through the layer 62 itself is exhibited. The soft layer 61 is made of urethane. Since the hard layer 62 is made of polyethylene, it has a deformation characteristic that it is compressed between the dash panel 7 and the component assembly portion 4 and slightly deforms. The hard layer 62 is slightly deformed between the soft layer 61 and the dash panel 7 and is brought into close contact with the dash panel 7, thereby exhibiting a water stop function against the high-pressure water from the vehicle interior outside region 71.

  The conventional vehicle air conditioner shown in FIG. 6 includes a seal member 9 having only a deformation layer that deforms between the air conditioning case and the dash panel 7. The entire seal member 9 has the same hardness and is deformed at the same deformation rate, so that the water passage rate is the same between the air conditioning case and the dash panel 7. Therefore, the conventional vehicle air conditioner has room for improvement in terms of the water stop function between the dash panel 7 and the seal member 9. On the other hand, since the hard layer 62 has a deformation characteristic peculiar to the seal member 6, it exhibits an excellent water stop function against high-pressure water from the vehicle interior outside region 71 as compared with the seal member 9 shown in FIG. 6. . The soft layer 61 is formed of urethane having a deformation rate larger than that of the hard layer 62, thereby having a function of adjusting the dimension 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 greatly deformed, thereby exhibiting a water stop function against the low-pressure water from the vehicle interior outside region 71. The adhesive layer 60 exhibits a water stopping function against the high-pressure water from the vehicle interior outside region 71 by being in close contact with the component matching portions 4c1 and 4c2 between the component assembly portion 4 and the soft layer 61.

  Since the conventional vehicle air conditioner shown in FIG. 6 is deformed at the same deformation rate as described above, there is room for improvement in terms of the water stop function between the air conditioning 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 ensure adhesion with the component assembly unit 4 at a level 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 infiltration that passes through the adhesive layer 60 itself. Therefore, the adhesive layer 60 exhibits an excellent water stop function for the high-pressure water from the vehicle interior outside region 71 as compared with the seal member 9 in the conventional vehicle air conditioner.

  Further, the hard layer 62 may be formed of polyethylene, and the soft layer 61 may be formed of a rubber sponge having a higher deformation rate than the hard layer 62. The hard layer 62 may be formed of rubber sponge, and the soft layer 61 may be formed of urethane having a higher deformation rate than the hard layer 62. 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 is applied is larger than that of the hard layer 62. The rubber sponge forming the hard layer 62 forms a large number of closed cell portions, and thus has a function of suppressing water immersion that passes through the hard layer 62.

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

  The evaporator 11 includes, for example, a heat exchange unit having a plurality of refrigerant tubes and outer fins arranged at intervals, a header tank connected to both ends of the plurality of refrigerant tubes in the heat exchange unit, and piping A connecting portion. An inflow pipe through which refrigerant as a heat medium flows into the evaporator 11 and a pipe 51 through which refrigerant flows out of the evaporator 11 are coupled to the pipe connection portion. The header tank is provided at each end of the heat exchange unit in the refrigerant flow direction. An 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 that heats the air by using high-temperature engine cooling water as a heat source. A cold air passage is provided inside the air conditioning case 1 and on the vehicle rear side of the evaporator 11. Cool air that has been cooled by passing through the heat exchange section of the evaporator 11 flows through the cold air passage. A warm air passage is provided inside the air conditioning case 1 and extending from the vehicle rear side to the vehicle upper side of the heater core 12. After flowing through the cold air passage, the hot air heated through the heater core 12 flows through the hot air passage. An air inflow passage to the heater core 12 is opened and closed at a position 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 unit that mixes the cool air from the cool air passage and the warm air from the heater core 12 to mix the cool air and the warm air is provided at a portion downstream of the cool air passage and the hot air passage. The air mixing portion is an area in 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 has been adjusted in the air mixing section is blown out to a predetermined location in the vehicle compartment through a defroster passage, a face passage, a foot passage, and the like provided further downstream.

  Below, the effect which the vehicle air conditioner 100 of 1st Embodiment brings is demonstrated. The vehicle air conditioner 100 is provided from the inside of the air conditioning case 1 through the partition wall through hole 7a of the dash panel 7 that partitions the air conditioning case 1 installed in the vehicle interior side region 70 and the vehicle interior side region 70 and the vehicle interior outside region 71. And pipes 51 and 52 extending to the vehicle interior outside region 71. The vehicle air conditioner 100 is a component formed by combining a plurality of components such that the pipes 51 and 52 have extraction portions 4b1 and 4b2 that are extracted outside the air conditioning case 1 at positions corresponding to the partition wall through holes 70a. An 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 deformation layer and the component assembly unit 4 in order to cause the deformation layer to adhere to the component assembly unit 4 and to be deformed by being compressed between the dash panel 7 and the component assembly unit 4. Adhesive layer 60 formed. Each of the plurality of parts has adhesive marginal surfaces 40c1, 41c1, 41c2, each having a width dimension that allows the adhesive layer 60 to adhere to the part matching parts 4c1, 4c2, which are parts where the parts are in contact with each other in the part assembly part 4. 42c2.

  According to the vehicle air conditioner 100, the pipe assembly parts 4 b 1 and 4 b 2 extending from the inside of the air conditioning case 1 to the vehicle interior outside region 71 are provided in the parts assembly part 4 in which a plurality of parts are combined. Since the parts alignment portions 4c1 and 4c2 are formed with adhesive marginal surfaces having a width dimension to which the adhesive layer 60 can adhere, water flows from the vehicle interior side region 71 through the component alignment portions 4c1 and 4c2 to the vehicle interior side region 70. It is possible to suppress flooding. Furthermore, the vehicle air conditioner 100 can seal the space between the component assembly unit 4 and the deformation layer of the seal member 6 with the adhesive layer 60. 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 outside region 71 to the vehicle interior side region 70. Therefore, according to the vehicle air conditioner 100, the sealing performance between the seal member 6 and the air conditioning case 1 can be improved.

  Since the conventional vehicle air conditioner shown in FIG. 6 is deformed at the same deformation rate as described above, when the seal member 9 is composed of a soft layer, water is interposed between the air conditioning case and the dash panel 7. In order to make it difficult to pass, it is necessary to increase the overall thickness direction dimension. Further, when the seal member 9 is formed of a hard layer, it can have a function of preventing water from passing through, but cannot provide a function of adjusting the thickness direction dimension. On the other hand, the deformation layer of the seal member 6 is provided at a position where the soft layer 61 provided integrally with the adhesive layer 60 and the deformation ratio with respect to the compressive force are smaller than those of the soft layer 61 and in 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. A configuration that is difficult to perform can be provided. Thereby, the inundation to the vehicle interior side area | region 70 in the dash panel 7 side can be suppressed. Therefore, the vehicle air conditioner 100 can improve the sealing performance between the seal member 6 and the air conditioning case 1 together with the configuration in which the space between the component assembly portion 4 and the soft layer 61 is sealed by the adhesive layer 60. .

  Further, since the soft layer 61 has a thickness dimension larger than that of the hard layer 62, the soft layer 61 is deformed more than the hard layer 62. That is, the soft layer 61 has a function of greatly changing the thickness dimension of the entire seal member 6 due to the compressive force due to the characteristics that the thickness dimension is large and the deformation rate is large. Thereby, the sealing member 6 can be deformed at a deformation rate corresponding 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 seal member 6 having a sealing property and a dimension adjusting function.

  The hard layer 62 is made of polyethylene, and the soft layer 61 is made of urethane. According to this configuration, it is possible to provide a configuration in which water hardly passes between the dash panel 7 and the seal member 6 by deforming polyethylene having a small deformation rate by the compressive force acting on the seal member 6. Since the urethane soft layer is deformed to a greater extent than the polyethylene hard layer, it can be deformed at a deformation rate corresponding to the distance dimension between the air conditioning case 1 and the dash panel 7. By the combination of the urethane layer and the polyethylene layer, the sealing member 6 having a sealing property and a dimension adjusting function can be provided.

  The hard layer 62 is made of polyethylene, and the soft layer 61 is made of rubber sponge. According to this configuration, it is possible to provide a configuration in which water hardly passes between the dash panel 7 and the seal member 6 by deforming polyethylene having a small deformation rate by the compressive force acting on the seal member 6. Since the soft layer of rubber sponge is deformed to a greater extent than the hard layer of polyethylene, it can be deformed at a deformation rate corresponding to the distance dimension between the air conditioning case 1 and the dash panel 7. The combination of the rubber sponge layer and the polyethylene layer can provide the sealing member 6 having a sealing property and a dimension adjusting function.

  The hard layer 62 is made of rubber sponge, and the soft layer 61 is made of urethane. According to this configuration, it is possible to provide a configuration in which water hardly passes between the dash panel 7 and the seal member 6 by deforming the rubber sponge having a small deformation rate by the compressive force acting on the seal member 6. By using a high resilience rubber sponge for the hard layer 62, the overall thickness of the seal 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 corresponding to the distance dimension between the air conditioning case 1 and the dash panel 7. The combination of the urethane layer and the rubber sponge layer can provide the sealing member 6 having a sealing property and a dimension adjusting function.

  The hard layer 62 is formed of a rubber sponge, and the soft layer 61 is formed of a rubber sponge configured such that the deformation rate when the same compressive force is applied is greater than that of the rubber sponge of the hard layer 62. According to this configuration, the structure is such that water hardly passes between the dash panel 7 and the seal member 6 by deforming the hard sponge rubber sponge having a small deformation rate by the compressive force acting on the seal member 6. Can be provided. Since the rubber sponge of the soft layer has the property of being deformed to a greater extent than the rubber sponge of the hard layer, it can be deformed at a deformation rate corresponding to the distance dimension between the air conditioning case 1 and the dash panel 7. By combining two rubber sponge layers having different deformation ratios, it is possible to provide the seal member 6 having a sealing property and a dimension adjusting function.

  The plurality of parts are combined with the first part 40 and the second part 41 that form the take-out portion 4b1 of the pipe 51 that connects the evaporator 11 and the expansion valve 5, and the second part 41. And a third part 42 that forms the take-out portion 4b2 of the pipe 52 through which the cooling water flowing in or out flows. According to this configuration, the take-out part 4 b 1 of the pipe 51 is constituted by the first part 40 and the second part 41, and the take-out part 4 b 2 of the pipe 52 is constituted by the second part 41 and the third part 42. According to this, since the piping 51 and the piping 52 are taken out of the air conditioning case 1, the number of assembling steps can be reduced. In addition, it is possible to provide the vehicle air conditioner 100 that can improve workability when taking out a plurality of pipes from the air conditioning case 1 to the outside and can secure the sealing performance in the component matching portions 4c1 and 4c2.

  The outer peripheral edge 4a of the plurality of parts forming the part assembling part 4 is 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, and 42a are provided at the outer peripheral edges 4a of the plurality of components, it is possible for water to enter the adhesive margin surfaces provided in the component mating portions 4c1 and 4c2. Can be suppressed. Therefore, the sealing member 6 with improved sealing performance at the outer peripheral portion can be provided by the outer peripheral adhesive marginal surfaces 40a, 41a, 42a and the adhesive layer 60.

(Other embodiments)
The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiment are omitted. The disclosure encompasses parts, element replacements, or combinations 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 are not limited to this number or configuration.

  In the above-described embodiment, the piping 51 and the piping 52 that are extracted to the outside from the extraction portions 4 b 1 and 4 b 2 of the component assembly portion 4 are the piping that connects the evaporator 11 and the expansion valve 5 and the piping that is connected to the heater core 12. However, it is not limited to such piping. The pipe may be a pipe extending from the other heat exchanger or other equipment accommodated 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 these parts are not limited. The plurality of parts that can achieve the object disclosed in the specification may be two parts or four or more parts.

DESCRIPTION OF SYMBOLS 1 ... Air-conditioning case, 4 ... Parts assembly part, 4b1, 4b2 ... Extraction part 4c1, 4c2 ... Part alignment part, 6 ... Seal member 7 ... Dash panel (vehicle body side partition wall member), 7a ... Partition wall through-hole 40 ... First part (Parts), 41 ... second part (parts), 42 ... third part (parts)
40c1, 41c1, 41c2, 42c2 ... Adhesive marginal surfaces 51, 52 ... Piping, 60 ... Adhesive layer, 61 ... Soft layer (deformation layer)
62: Hard layer (deformation layer), 70: Vehicle interior side region, 71: Vehicle interior side region

Claims (9)

An air conditioning case (1) installed in the vehicle interior side region (70) and through which the conditioned air blown out to the vehicle interior circulates;
It extends from the inside of the air conditioning case to the vehicle compartment outside region through a partition wall through hole (7a) provided in the vehicle body side partition member (7) that partitions the vehicle compartment side region and the vehicle compartment outside region (71). Piping (51, 52),
A part formed by combining a plurality of parts (40, 41, 42) so that the pipe has a take-out part (4b1, 4b2) to be taken out of the air conditioning case at a position corresponding to the partition wall through hole. Assembly part (4);
A seal member (6) installed between the vehicle body side partition member and the component assembly part;
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 to adhere the deformable layer to the component assembly portion. An adhesive layer (60) provided between the component assembly unit and
Each of the plurality of components has an adhesive margin surface having a width dimension that allows the adhesive layer to adhere to the component matching portions (4c1, 4c2), which are portions where the components and the components are in contact with each other in the component assembly portion. 40c1, 41c1, 41c2, 42c2).   The deformation layer includes a soft layer (61) provided integrally with the adhesive layer, and a hard layer provided at a position where the deformation rate with respect to compressive force is smaller than that of the soft layer and is in contact with the vehicle body partition wall member. The vehicle air conditioner according to claim 1, comprising a layer (62).   The vehicle air conditioner according to claim 2, wherein the soft layer has a thickness dimension 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 rubber sponge.   The hard layer is formed of a rubber sponge, and the soft layer is formed of a rubber sponge configured such that a deformation rate when the same compressive force is applied is larger than that of the rubber sponge of the hard layer. Item 4. The vehicle air conditioner according to Item 2 or 3.   The plurality of parts are a first part (40) and a second part that form the take-out part of the pipe (51) connecting the evaporator (11) and the expansion valve (5) accommodated in the air conditioning case. (41) and the extraction part of the pipe (52) through which cooling water flows into or out of the heating heat exchanger (12) housed in the air conditioning case in combination with the second part. The vehicle air conditioner according to any one of claims 1 to 7, further comprising a third part (42) to be formed.   An outer peripheral adhesive marginal surface (40a, 41a, 42a) having a width dimension to which the adhesive layer adheres is provided on the outer peripheral edges (4a) of the plurality of parts forming the component assembly portion. The vehicle air conditioner according to any one of 1 to 8.

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