JP2017043198A - Indoor seal structure of vehicle air conditioner and indoor equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor seal structure of a vehicle air conditioner which avoids cracks occurring in a seal member to secure insulation performance of the seal member and the sealability and achieves productivity.SOLUTION: An indoor seal structure of a vehicle air conditioner includes: a seal member 4 attached to an edge 22 of a housing body in which an indoor heat exchanger and an outdoor blower are housed; and a packing attached to an upper surface cover and with which the seal member 4 closely contacts. In the indoor seal structure of the vehicle air conditioner, the upper surface cover is attached to the housing body and the seal member 4 and the packing closely contact with each other. The seal member 4 has: a core material made of a hard synthetic resin; a trim 5 having a cover material, which is made of a soft synthetic resin or rubber, and covering the edge 22 of the housing body; a corner piece 6 made of a soft synthetic resin and covering a corner part 22b of the edge 22 of the housing body; and an insulation sheet 7 covering a joint between the trim 5 and the corner piece 6.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an indoor seal structure and an indoor unit of a vehicle air conditioner mounted on a ceiling of a vehicle such as a train.

  The housing of a vehicle air conditioner mounted on the ceiling of a vehicle such as a train is composed of an indoor heat exchanger, a housing body on which the outdoor heat exchanger is placed, and an upper surface cover that covers the housing body. Yes. For example, Patent Document 1 discloses a technique for sealing a casing of a vehicle air conditioner with a seal structure in which a casing main body that accommodates an outdoor duct and an upper surface cover are in close contact with each other. This seal structure is configured by adhering a U-shaped chloroprene rubber extruded product to the edge of the casing body with a solvent-type adhesive and closely adhering to the chloroprene rubber packing adhered to the top cover. The extrusion-molded product is formed at a height of 30 mm or more so that it can satisfy the insulation standard of the railway vehicle industry association standard JRIS R 0322.

  On the other hand, in automobile doors, etc., a seal structure called a trim is adopted, in which an extruded product in which a core material made of metal is coated with a soft synthetic resin or rubber coating material is pushed into the edge of the door or the like. Has been. For example, Patent Document 2 discloses a trim that can be reduced in weight and recycled by using hard synthetic resin instead of metal as a core material.

JP 2006-273099 A Japanese Patent Laid-Open No. 2004-231163

  When the seal structure as in Patent Document 1 is adopted, an extruded product is manufactured, and the region and amount to which the solvent-type adhesive is applied must be adjusted and bonded, resulting in poor productivity. Instead of adhering the extruded product to the casing body, for example, it is considered that productivity can be improved if a seal structure with a trim is used.

  In general trim, metal is used for the core material, so it is difficult to satisfy the insulation standard of the railway vehicle industry association standard JRIS R 0322. However, as in Patent Document 2, a trim using a hard synthetic resin for the core material If so, it is considered that the insulation standard is satisfied. However, when a trim is used in a vehicle air conditioner, the soft synthetic resin that coats the core of the trim loses its cohesive force in a high temperature environment, causing tearing at the corner where the trim bends. It is not suitable for use in the sealing structure of the device. In particular, in the case of a seal structure of an indoor unit in which an electronic device such as a control device is mounted, it is not possible to use a trim that may cause electric leakage, water intrusion, and dust or dust intrusion.

  The present invention has been made in order to solve the above-described problems. The interior of the vehicle air conditioner is excellent in productivity by ensuring the insulating properties and sealing properties of the corners or joints of the seal member. It aims at obtaining a seal structure and an indoor unit.

  An indoor seal structure for a vehicle air conditioner according to the present invention includes a seal member attached to an edge of a casing body that houses an indoor heat exchanger and an indoor blower, and an upper surface cover. In the indoor seal structure of a vehicle air conditioner in which the seal member and the packing are in close contact with each other, the seal member is made of a hard synthetic resin. A core material, a covering material made of soft synthetic resin or rubber, and a trim that covers the edge of the housing body, and a corner piece that is made of a soft synthetic resin and covers a corner of the edge of the housing body. And an insulating sheet covering a joint between the trim and the corner piece.

  According to the indoor seal structure of a vehicle air conditioner according to the present invention, a seal member is formed by a trim having a hard synthetic resin as a core material and a corner piece made of a soft synthetic resin, and covers the corners of the casing. Avoid cracks in the seal member. In addition, the joint between the trim and the corner piece is covered with an insulating sheet, and the joint is securely sealed. Thereby, productivity can be improved by the sealing member which can be attached only by pressing against the housing while maintaining the insulating property and sealing property of the sealing member.

It is a top view of the vehicle air conditioner which concerns on this Embodiment. It is a perspective exploded view of the housing | casing of the vehicle air conditioner of FIG. FIG. 3 is a partial perspective view of the seal member of FIG. 2. It is sectional drawing of the trim of the sealing member of FIG. It is a perspective view of the core material of the trim of FIG. It is a perspective view (the 1) of the corner piece of the sealing member of FIG. It is a perspective view (the 2) of the corner piece of the sealing member of FIG. It is a fragmentary perspective view of the other form of the sealing member of FIG. It is a schematic diagram which shows the evaluation method of the retention strength of a trim.

Embodiment.
The indoor seal structure of the vehicle air conditioner according to the present embodiment seals and insulates the casing main body in which the indoor unit of the vehicle air conditioner is disposed and the upper surface cover.

  FIG. 1 is a plan view of a vehicle air conditioner 100 according to the present embodiment. As shown in FIG. 1, the vehicle air conditioner 100 includes an outdoor heat exchanger 111a, 111b, an outdoor fan 112, an indoor heat exchanger 121a, 121b, an indoor fan 122a, 122b, and compressors 123a, 123b. It has. The outdoor heat exchangers 111a and 111b function as heat source side heat exchangers that exchange heat with the outside air, and the indoor heat exchangers 121a and 121b function as use side heat exchangers that generate air to be sent into the vehicle. To do. The outdoor heat exchangers 111a and 111b, the indoor heat exchangers 121a and 121b, and the compressors 123a and 123b are connected by a pipe that forms a refrigerant circuit to form a refrigeration cycle. The compressors 123a and 123b are controlled by a control device (not shown). The outdoor heat exchangers 111a and 111b and the outdoor fan 112 are housed in the outdoor unit housing 110, and the indoor heat exchangers 121a and 121b, the indoor fans 122a and 122b, and the compressors 123a and 123b are the indoor unit housing. It is housed in the body 120. The compressors 123a and 123b may be accommodated in a room provided separately from the indoor unit housing 120.

  The indoor unit housing 120 is not provided in the vehicle, but houses a use-side heat exchanger for supplying conditioned air into the vehicle. In normal air conditioning, it is positioned in the same manner as an indoor unit casing provided indoors, and is therefore referred to as an “indoor unit casing” in the present invention.

  FIG. 2 is an exploded perspective view of the housing 200 of the vehicle air conditioner 100 of FIG. As shown in FIG. 2, the seal structure 10 of the vehicle air conditioner 100 forms a housing 200 by bringing the top cover 1 and the housing body 2 into close contact with each other. The seal structure 10 corresponds to the indoor seal structure of the present invention. The housing 200 is composed of, for example, an outdoor unit housing 110 and an indoor unit housing 120. The upper surface cover 1 covers the housing body 2, and a packing 3 is bonded to the inner surface. In addition, an air hole (not shown) is formed in the top cover 1 on the outdoor unit housing 110 side. The seal member 4 is attached to the entire periphery of the edge 22 of the portion constituting the indoor unit housing 120 in the housing body 2. The edge 22 includes a straight portion 22a that is a straight region in a top view and a corner portion 22b that is a branch portion where the edge 22 branches. The shape of the corner 22b is determined by the shape of the housing 200, and may be a shape such as a T-shape of the dotted circle 2b in addition to the L-shape of the dotted circle 2a.

  When the top cover 1 is attached to the housing body 2, the housing 200 is formed by the seal structure 10 in which the seal member 4 bonded to the edge 22 is in close contact with the packing 3. In FIG. 2, the case 200 shows an example in which the outdoor unit case 110 and the indoor unit case 120 are integrated, and the seal structure 10 is formed on the entire periphery thereof. As long as it is provided at least in the indoor unit housing 120. Further, the indoor unit housing 120 may be configured separately from the outdoor unit housing 110.

  In FIG. 2, the shape of the housing 200 is a bowl shape, but the shape of the housing 200 is not limited to the bowl shape. When the housing 200 has a bowl shape, the edge 22 of the housing body 2 has a curved shape in a side view, and the top cover 1 has a curved shape along the edge 22. When the housing 200 is flat or trapezoidal in a side view, the edge 22 of the housing body 2 is a straight line, and the top cover 1 is a flat surface.

Next, details of the seal member 4 will be described.
FIG. 3 is a partial perspective view of the seal member 4 of FIG. As shown in FIG. 3, the sealing member 4 includes an insulating sheet that covers the trim 5 that is pressed into the linear portion 22 a and the corner piece 6 that is pressed into the corner portion 22 b and is adjacent to the trim 5, and the joint 8. 7.

  4 is a cross-sectional view of the trim 5 of the seal member 4 of FIG. As shown in FIG. 4, the trim 5 is formed of a core material 12 made of a hard synthetic resin and a covering material 13 that covers the core material 12. The trim 22 has a U-shaped cross-section and is pushed between the U-shaped edges 22. The straight portion 22a is held. The trim 5 is formed at a height a of 30 mm or more in order to satisfy the insulation standard of the railway vehicle industry association standard JRIS R 0322. As the height a of the trim 5 is higher, insulation can be ensured, but the trim 5 is not higher than necessary because it interferes with the housing body 2 or restricts the equipment that can be accommodated in the housing body 2. It is desirable.

  The covering material 13 is formed from a soft synthetic resin or rubber having flexibility, and the sealing member 4 can easily follow the shape of the edge 22. For example, even if the housing 200 is bowl-shaped and the edge 22 is curved, the flexible covering material 13 can follow the edge 22 and bend. As the covering material 13, it is preferable to use an olefin-based thermoplastic elastomer having a hardness of 60 to 80 from the viewpoint of complying with environmental regulations such as heat resistance, weather resistance, and RoHS directive. Here, the hardness is a hardness based on “JIS K6253 Shore A” defined by Japanese Industrial Standards JIS. On the inner surface of the covering material 13, a barb 14 is formed so that the covering material 13 protrudes, and the edge 22 pushed into the U-shape of the trim 5 by the tips of the barb 14 does not come out. Hold.

  The core material 12 is formed from a hard synthetic resin having a height b of 10 mm to 20 mm. If the height b of the core material 12 is 20 mm or more, the followability with respect to the curved edge 22 is deteriorated. If the height b is 10 mm or less, sufficient holding force cannot be obtained, and the edge 22 is easily pulled out from the U-shape of the trim 5. End up. The height b is preferably 15 mm.

  FIG. 5 is a perspective view of the core member 12 of the trim 5 of FIG. As shown in FIG. 5, the core material 12 is made of a hard synthetic resin, and cut portions 12 a formed by removing a part in the longitudinal direction are provided at regular intervals. The cut portion 12a is provided so that it can follow the curved edge 22 of the core 12 as well. As the hard synthetic resin forming the core material 12, an extruded product such as polypropylene having a hardness that can sufficiently hold the edge 22 and having good heat resistance may be used.

  FIG. 6 is a perspective view (part 1) of the corner piece 6 of the seal member 4 of FIG. As shown in FIG. 6, the corner piece 6 has a U-shaped cross-sectional shape and is L-shaped in a top view, and the corner 22 b is formed on the U-shaped portion while keeping the corner 22 b of the edge 22 along the L-shaped portion. The corner 22b of the edge 22 is covered by pushing. Since the L-shaped corner piece 6 is made of a soft synthetic resin, the L-shaped corner piece 6 has flexibility, and is applied to, for example, the corner portion 22b of the edge 22 perpendicular to the top view shown in a dotted circle 2a in FIG. As the soft synthetic resin, for example, it is preferable to use an olefin-based thermoplastic elastomer similar to the covering material 13.

  FIG. 7 is a perspective view (part 2) of the corner piece 9 of the seal member 4 of FIG. As shown in FIG. 7, the corner piece 9 may have a T shape when viewed from above. The T-shaped corner piece 9 can be applied when the edge 22 has a shape branched into a T-shape such as a corner 22b shown in a dotted circle 2b in FIG. For example, when the indoor unit housing 120 is divided into a plurality of rooms, such as when a room for a compressor is provided in the indoor unit housing 120. Also in this case, the T-shaped corner piece 9 can follow the shape of the edge 22. Note that the region shown within the dotted circle 2 b is an edge 22 that defines the outdoor unit housing 110 and the indoor unit housing 120. Therefore, it is sufficient to use the L-shaped corner piece 6 that forms a seal structure at least at the edge 22 on the indoor unit housing 120 side. In this case, the T-shaped corner piece 9 is not necessary.

  Here, referring to FIG. 3 again, the insulating sheet 7 will be described. As shown in FIG. 3, the insulating sheet 7 covers the joint 8 between the trim 5 that is pressed and attached to the linear portion 22 a and the corner piece 6 that is pressed and attached to the corner portion 22 b. The insulating sheet 7 is a thin film made of a soft synthetic resin, and an olefin-based thermoplastic elastomer similar to the covering material 13 and the corner piece 6 can be used.

  A seal member 4 is formed by the trim 5, the corner piece 6, and the insulating sheet 7. The seal member 4 follows the straight portion 22 a and the corner portion 22 b of the edge 22 and covers the edge 22 of the housing body 2 in a shape along the edge 22. Then, the seal member 4 attached to the edge 22 and the packing 3 adhered to the upper surface cover 1 are in close contact with each other, and the seal structure 10 that seals the housing 200 is formed.

  When the shape of the housing 200 is, for example, a bowl shape, and the radius of curvature of the edge 22 of the housing body 2 is curved into a semicircle of about R = 1800 in a side view, the flexibility of the seal member 4 Therefore, the sealing member 4 follows the edge 22 due to the property and becomes a curved shape. As a result, the seal member 4 is attached to the entire circumference of the edge 22 without a gap, and the housing 200 is sealed.

  If an olefinic thermoplastic elastomer having a hardness of less than 80 is used as the soft synthetic resin, the sealing member 4 can be made flexible and can easily follow the curved edge 22. . If the height b of the core material 12 of the trim 5 is 10 mm to 20 mm, the interference of the core material 12 and wrinkles of the covering material 13 can be avoided, and the sealing member 4 that follows the curved edge 22 can be obtained.

  FIG. 8 is a partial perspective view of another form of the seal member 4 of FIG. As shown in FIG. 8, when the housing body 2 is, for example, flat and rectangular in a side view, the angle in the short direction is smaller than that in FIG. Even in the case main body 2 having such a shape, the sealing member 4 having flexibility can cover the edge 22 while the sealing member 4 follows the shape of the edge 22. The shape of the edge 22 is not limited to the L-shape and the T-shape, and the angle in the short direction may be formed larger than that shown in FIG.

  In addition, the sealing member 4 must be classified more than the flame retardance in the railway vehicle material combustion test. If the hardness of the olefinic thermoplastic elastomer is less than 60, the amount of inorganic flame retardant that can be added to the olefinic thermoplastic elastomer is limited. By setting the hardness of the olefin-based thermoplastic elastomer to 60 to 80, it is possible to sufficiently ensure the followability of the seal member 4 and the flame retardancy. In particular, the hardness is preferably 70. In the above description, the hardness is a hardness based on “JIS K6253 Shore A” defined by Japanese Industrial Standards JIS.

  As the material of the core material 12, in addition to polypropylene, an olefin resin such as polyethylene, a styrene resin, a nylon resin, a polyester resin, or the like can be used as a hard synthetic resin. Further, by mixing an inorganic powder such as talc, mica, and glass fiber with the hard synthetic resin, the rigidity and heat resistance of the hard synthetic resin can be increased, and the linear expansion coefficient can be reduced.

  The material of the covering material 13 may use an olefin resin having a hardness of about 90, a styrene resin, or a thermoplastic elastomer thereof as a soft synthetic resin in addition to the olefin thermoplastic elastomer. Further, rubber may be used, and a foamed material may be mixed with rubber, thermoplastic elastomer or the like to form a sponge. Here, the hardness is a hardness based on “JIS K7215 A hardness” defined by Japanese Industrial Standards JIS.

Performance evaluation was performed on the seal structure 10 of the vehicle air conditioner 100 according to the present embodiment.
As shown in FIG. 4, the trim 5 of the seal member 4 to be evaluated was prepared by forming the core 12 from polypropylene and the covering 13 from a thermoplastic elastomer, and preparing a trim 5 having a length of 100 mm. A thermoplastic elastomer having a hardness of 70 was used. Note that the height a of the trim 5 was set to 30 mm in order to satisfy the insulation standard of the railway vehicle industry association standard JRIS R 0322. In addition, magnesium hydroxide was adopted as an inorganic flame retardant and mixed with thermoplastic elastomer so that it could fall into the category of flame retardance or higher in the rail vehicle material combustion test. The corner piece 6 was formed using a thermoplastic elastomer in the same manner as the covering material 13.

[Observation of appearance abnormality]
The case body 2 to which the trim 5 is mounted is simulated by a case where the edge 22 is curved and the radius of curvature is R = 1800, and is made of a stainless steel material SUS304 having a thickness of 1.5 mm, and the radius of curvature becomes R = 1800. A flat plate with curved edges was molded. The trim 5 was then fitted with a curved edge, and the appearance was observed. As a result, no appearance abnormality such as undulation was observed, a good appearance was maintained, and it was observed that the trim 5 follows a curved edge.

[Retention force]
FIG. 9 is a schematic diagram showing a method for evaluating the holding force of the trim 5. As shown in FIG. 9, the base 5 of the flat plate 20 simulating the straight portion 22a of the edge 22 was fixed, and the trim 5 having a wire pierced in the inner axial direction was attached. As the flat plate 20, a stainless steel material SUS304 formed to a thickness of 1.5 mm was used. The holding force is defined as a force that holds the flat plate 20 on the U-shape of the trim 5 when a force in the direction of pulling the trim 5 attached to the flat plate 20 is applied to the trim 5. In measuring the holding force, the wire pierced by the trim 5 was hung on the hook of the push-pull gauge, the wire was pulled until just before the trim 5 was detached from the flat plate 20, and the load at that time was measured as the holding force. As a result, it was found that when the environmental temperature was room temperature, a holding force of 25 N was obtained, and the flat plate 20 pushed into the trim 5 was held with a sufficient force.

[Heat resistance]
An L-shape consisting of the straight portion 22a and the corner portion 22b of the edge 22 was simulated, and a flat plate of a stainless steel material SUS304 having a thickness of 1.5 mm was bent into an L-shape. A portion corresponding to the straight portion 22a of the flat plate was pushed into the trim 5 of FIG. 3, and a portion corresponding to the corner portion 22b of the flat plate 20 was pushed into the corner piece 6 of FIG. Further, the joint 8 between the trim 5 and the corner piece 6 was covered with an insulating sheet 7, and the seal member 4 was mounted on an L-shaped flat plate. As the insulating sheet 7, an insulating sheet with a double-sided tape having a thickness of 0.5 mm was used. The covering material 13 of the trim 5, the corner piece 6, and the insulating sheet 7 are all made of thermoplastic elastomer as a material. Then, the L-shaped flat plate equipped with the seal member 4 was placed in an oven having a temperature of 100 ° C., and the heat resistance performance of the seal member 4 was evaluated by leaving it for one month while maintaining the temperature. One month later, the appearance of the sealing member 4 was observed, and it was found that no abnormality was observed in the appearance such as tearing, deformation, and discoloration, and the properties could be maintained well even in a high temperature environment.

[Waterproof and insulating]
Using SUS304 having a thickness of 1.5 mm, a box without a lid and an upper surface cover 1 simulating the casing body 2 of the vehicle air conditioner 100 were formed. The dimensions of the box were a height of 50 mm, a width of 300 mm, and a length of 300 mm. The trim 5 was attached to the straight portion 22a of the box edge 22, and the corner pieces 6 were attached to all four corner portions 22b. An insulating sheet 7 with a double-sided tape was attached to eight joints 8 of the trim 5 and the corner piece 6 so as to cover the joints 8 to form a seal member 4. Using a flat plate having a thickness of 1.5 mm as the upper surface cover 1, a packing 3 made of chloroprene rubber having a thickness of 10 mm was bonded to the inner surface. The upper surface cover 1 was covered and adhered so that the packing 3 and the seal member 4 were in close contact.

  A waterproof test and an insulation test were performed on the seal structure 10 configured to be in close contact. The waterproof test was conducted by spraying water equivalent to a precipitation of 200 mm / h or more for 10 minutes or more based on “JIS E 6602: 2004” defined by Japanese Industrial Standards JIS. As a result, water did not enter the inside of the box simulating the housing 200. In the insulation test, 4.5 kV was applied as a test voltage between the top cover and the box based on the same standard. As a result, even after 1 minute, the top cover or the box did not cause a ground fault, and other abnormalities were not observed.

  Further, the constructed seal structure 10 was left in an oven maintained at a temperature of 100 ° C. for one week, and then the upper surface cover 1 was removed to evaluate the heat resistance performance of the seal structure 10. As a result, it was found that there was no abnormality that the sealing member 4 of the upper surface cover peeled off from the edge 22 of the box, and the state covering the edge 22 could be maintained even in a high temperature environment.

Comparative example.
The trim 5 using the core material 12 and the covering material 13 similar to those of the example was prepared without using the corner piece 6. Then, a trim 5 was attached to a flat plate obtained by bending a stainless steel material SUS304 having a thickness of 1.5 mm into an L shape, and the trim 5 was left in an oven maintained at 60 ° C. When a change in appearance was observed after one day had elapsed, stress was concentrated at the corners and tearing occurred.

  Thus, in the seal structure 10 of the embodiment, the core member 12 is formed with the seal member 4 including the polypropylene trim 5 and the corner piece 6 of the thermoplastic elastomer covering the corner portion 22b of the edge 22. No cracks occurred in the corners 22b even when left below. In addition, it was found that by covering the joint 8 between the trim 5 and the corner piece 6 with the insulating sheet 7, it is possible to ensure insulation and sealing properties.

  According to the indoor seal structure 10 of the vehicle air conditioner 100 according to the present embodiment described above, the seal member is constituted by the trim 5 using the core material 12 made of hard synthetic resin and the corner piece 6 made of soft synthetic resin. 4 is configured. The corner portion 22b of the edge 22 of the housing body 2 is such that the corner piece 6 follows the corner portion 22b and avoids the occurrence of cracks in the seal member 4 at the corner portion 22b. The joint 8 between the trim 5 and the corner piece 6 is covered by an insulating sheet 7 bonded to the joint 8. Thereby, the insulation and sealing performance of the sealing member 4 are ensured. Further, since the seal member 4 can be mounted simply by pressing against the edge 22 of the housing body 2, the indoor unit housing 120 with excellent productivity can be obtained.

  By setting the height of the trim 5 to 30 mm or more, it is possible to form the trim 5 having a height that satisfies the insulation standard of the railway vehicle industry association standard JRIS R 0322.

  Further, by setting the height of the core material 12 of the trim 5 to 10 mm or more and 20 mm or less, the following can be maintained even when the edge 22 is curved, and the edge 22 can be sufficiently held. I can do it.

  Moreover, according to the shape where the edge 22 branches, even if it is the edge 22 branched by covering the corner | angular part 22b of the edge 22 with the sealing member 4 using the T-shaped corner piece 9, insulation and sealing performance are ensured. can do.

  The polypropylene core material 12 has heat resistance and sufficient hardness, the covering material 13 made of an olefin-based thermoplastic elastomer, the corner piece 6 and the insulating sheet 7 have heat resistance and weather resistance, and It is also possible to comply with environmental regulations such as the RoHS directive.

  By using an inorganic flame retardant, the environmental load is reduced, and when the hardness is 60 or more and 80 or less, the followability to the curved edge 22 is good and the flame retardant property is ensured. And the insulating sheet 7 is obtained.

  DESCRIPTION OF SYMBOLS 1 Top cover, 2 Case body, 2a, 2b Dotted line circle, 3 Packing, 4 Seal member, 5 Trim, 6, 9 Corner piece, 7 Insulation sheet, 8 Joint, 10 Seal structure, 12 Core material, 12a Cut part , 13 Coating material, 14 Bareback, 20 Flat plate, 22 Edge, 22a Straight line part, 22b Corner part, 100 Air conditioner for vehicle, 110 Outdoor unit housing, 111a, 111b Outdoor heat exchanger, 112 Outdoor fan, 120 Indoor unit housing Body, 121a, 121b, indoor heat exchanger, 122a, 122b indoor blower, 123a, 123b compressor, 200 housing.

Claims (7)

A seal member attached to an edge of the housing body in which the indoor heat exchanger and the indoor blower are stored;
A packing attached to the upper surface cover and in close contact with the seal member;
With
In the indoor seal structure of a vehicle air conditioner in which the upper surface cover is attached to the housing body, and the seal member and the packing are in close contact with each other.
The sealing member is
A trim having a core made of a hard synthetic resin and a covering made of a soft synthetic resin or rubber, and covering the edge of the housing body;
A corner piece made of a soft synthetic resin and covering a corner of the edge of the housing body,
An insulating sheet covering the joint between the trim and the corner piece;
Having
Indoor seal structure for vehicle air conditioners. The height of the trim is 30 mm or more,
The indoor seal structure of the vehicle air conditioner according to claim 1. The height of the core material of the trim is 10 mm or more and 20 mm or less,
The indoor seal structure of the vehicle air conditioner according to claim 1 or 2. The edge of the housing body has a branch part,
The corner piece has a T-shape;
The branch portion of the edge of the housing body is
Covered by the T-shaped corner piece,
The indoor sealing structure of the vehicle air conditioner of any one of Claims 1-3. The core material is made of polypropylene,
The covering material, the corner piece, and the insulating sheet are made of an olefin-based thermoplastic elastomer,
The indoor seal structure of the vehicle air conditioner according to any one of claims 1 to 4. The olefinic thermoplastic elastomer is
Including inorganic flame retardants,
The hardness is 60 or more and 80 or less,
Shows flame retardant or better in material combustion test for railway vehicles.
The indoor seal structure of the vehicle air conditioner according to any one of claims 1 to 5. An indoor heat exchanger, an indoor unit housing for storing the indoor blower, and
A top cover;
Have
The indoor unit casing and the upper surface cover are in close contact with each other by an indoor seal structure of the vehicle air conditioner according to any one of claims 1 to 6.
Indoor unit for vehicle air conditioner.

Images