Cover Structure of Vehicle Air Conditioning Device

Abstract

To suppress intrusion of noise outside a cabin to a cabin from an opening for an air conditioner for vehicle formed on a partition wall that separates the interior and exterior of the cabin in comparison to a case where the opening is covered with a resin cover made of a single material.SOLUTION: A cover structure 10 of an air conditioner 20 for vehicle includes: a partition wall 18 which separates the interior and exterior of a cabin 16 on which an occupant gets and has an opening 30 which is provided over the interior and exterior of the cabin 16 and in which the air conditioner 20 for vehicle is arranged; a cover member 22 which covers at least a portion of the air conditioner 20 for vehicle provided on the outside of the cabin and the opening 30; and an attenuation member which is provided on the inner side of the cover member 22 to attenuate the sound. The attenuation member includes multiple components 150, 200, 320 and 500 that contact each other and form the attenuation member when they are combined.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a cover structure for a vehicle air conditioner.

Background Art

[0002] Patent Document 1 discloses a vehicle air conditioner in which a part of the vehicle air conditioner is arranged in the engine room to expand the vehicle interior space, and the component is covered with a cover member.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in a vehicle air conditioner, in order to take in the air in the vehicle interior or supply the air conditioned in the vehicle interior, it is necessary to arrange a part of the vehicle air conditioner in the vehicle interior. For this reason, it is necessary to form an opening of a predetermined size in a partition wall such as a firewall or a dash lower arranged between the engine room and the vehicle interior.

[0005] On the other hand, outside the vehicle interior, an engine room or the like that constitutes a drive source room is provided. This engine room has noise sources such as an engine, a transmission, a motor, an inverter, or a DC converter. Vehicle exterior noise, which consists of noise generated by various parts of the vehicle outside the vehicle interior and noise transmitted from outside the vehicle into the vehicle such as road noise, may enter the vehicle interior through the opening formed in the partition wall.

[0006] The object of the present invention is to suppress the intrusion of outdoor noise of a vehicle into the vehicle interior from an opening for a vehicle air conditioner formed in a partition wall separating the inside and outside of the passenger compartment, as compared with the case where the opening is covered with a resin cover made of a single material.

Means for Solving the Problems

[0007] According to an aspect of the present invention, there is provided a partition wall that separates the inside and outside of a passenger compartment in which a passenger rides and has an opening in which a vehicle air conditioner provided across the inside and outside of the passenger compartment is disposed, and a cover member that covers at least a part of the vehicle air conditioner provided outside the passenger compartment and the opening. A cover structure of a vehicle air conditioner includes a damping member provided inside the cover member for damping sound, and the damping member is composed of a plurality of constituent members that are in contact with each other and form the damping member in a combined state. Matched It is composed of a plurality of constituent members that form the damping member in a state where they are in contact with each other and assembled. , provided along the cover member in a state of being in close contact with the inner surface of the cover member It is.

Effects of the Invention

[0008] In the above aspect, a damping member for damping sound is provided inside a cover member that covers at least a part of a vehicle air conditioner provided outside the passenger compartment and an opening, and the damping member is composed of a plurality of constituent members that are in contact with each other and form the damping member in a combined state. Therefore, even when the inside of the cover member is formed in a surface shape having a curved surface, a stepped surface, or the like, the plurality of constituent members can be arranged in contact with each other at corresponding locations according to the surface shape inside the cover member.

[0009] Therefore, it is possible to suppress the intrusion of outdoor noise of a vehicle into the vehicle interior from an opening for a vehicle air conditioner formed in a partition wall separating the inside and outside of the passenger compartment, as compared with the case where the opening is covered with a resin cover made of a single material.

Brief Description of the Drawings

[0010] [Fig. 1] FIG. 1 is an exploded perspective view of a main part of a vehicle to which a cover structure according to an embodiment of the present invention is applied. [Fig. 2]FIG. 2 is a perspective view showing the cover member. [Fig. 3] FIG. 3 is a bottom view showing the lid portion of the cover member. [Fig. 4] FIG. 4 is a rear view showing the cover body of the cover member. [Fig. 5] FIG. 5 is a sectional view taken along the line V-V in FIG. 4. [Fig. 6] FIG. 6 is an explanatory view showing a state in which the left side wall surface of the cover body is viewed from the inside. [Fig. 7] FIG. 7 is a perspective view showing the upper end portion of the left side wall member. [Fig. 8] FIG. 8 is a sectional view of a main part showing a portion where a pipe is inserted into the cover member.

BEST MODE FOR CARRYING OUT THE INVENTION

[0011] Hereinafter, with reference to the drawings, a vehicle 12 to which a cover structure 10 (hereinafter sometimes simply referred to as "cover structure 10") of a vehicle air conditioner 20 according to an embodiment of the present invention is applied will be described.

[0012] First, with reference to FIG. 1, the overall configuration of the vehicle 12 will be described. FIG. 1 is an exploded perspective view of a main part of the vehicle 12 to which the cover structure 10 according to the embodiment of the present invention is applied. In FIG. 1, the X-axis is the vehicle length direction (front-rear direction), the Y-axis is the vehicle width direction (left-right direction), and the Z-axis is the vehicle height direction (up-down direction). The X-axis, Y-axis, and Z-axis are orthogonal to each other.

[0013] As shown in FIG. 1, the vehicle 12 includes an engine room 14 as a drive source chamber (a motor room in the case of an electric vehicle), a passenger compartment 16, a partition wall 18, a vehicle air conditioner 20 (hereinafter sometimes simply referred to as "air conditioner 20"), and a cover member 22.

[0014] The engine room 14 is provided at the front part of the vehicle 12. The engine room 14 houses an engine (not shown), an electric motor (not shown), etc. as a driving source for driving the drive wheels (not shown) of the vehicle 12.

[0015] The passenger compartment 16 is provided behind the engine room 14 of the vehicle. That is, the engine room 14 and the passenger compartment 16 are provided so as to be arranged in the front-rear direction of the vehicle 12. A passenger rides in the passenger compartment 16.

[0016] The partition wall 18 separates the engine room 14 and the passenger compartment 16. That is, the partition wall 18 separates the inside and outside of the passenger compartment 16. The partition wall 18 prevents the noise in the engine room 14 and the noise outside the vehicle 12 from entering the passenger compartment 16. An opening 30 is provided in the partition wall 18.

[0017] The air conditioner 20 has an HVAC (Heating Ventilation and Air Conditioning) unit 40 and a refrigeration cycle circuit (not shown).

[0018] The HVAC unit 40 is something through which the air used for air conditioning passes. The HVAC unit 40 has a case 42, an air conditioner main body 44, an inside / outside air switching device 46, and a blower 48 having a blower motor BM as a motor.

[0019] In a general air conditioner, all the components of the HVAC unit 40 are arranged at the front part (the rear part of the partition wall 18) inside the passenger compartment 16 and are hidden so as not to be visible to the passengers inside the passenger compartment 16 by being covered from above by an instrument panel (not shown).

[0020] On the other hand, in the air conditioner 20 according to the embodiment of the present invention, the HVAC unit 40 is divided and arranged in the engine room 14 and the passenger compartment 16 and is connected through the opening 30 of the partition wall 18.

[0021] Specifically, in this air conditioner 20, a blower 48, an evaporator of the refrigeration cycle circuit, heating equipment for heating (not shown), etc. are provided in the engine room 14, and other components such as an inside / outside air switching device 46 are provided in the passenger compartment 16.

[0022] As a result, part of the air conditioner 20 arranged in the passenger compartment 16 protrudes into the engine room 14 through the opening 30 of the partition wall 18, and by arranging part of the components of the air conditioner 20 in the engine room 14, the space in the passenger compartment 16 is widened.

[0023] The case 42 houses the blower 48 and the evaporator etc. (not shown). The case 42 defines an internal space through which the air used for air conditioning passes.

[0024] The blower 48 arranged in the engine room 14 is rotationally driven by a blower motor BM. The blower 48 takes in the air in the passenger compartment 16 and the outside air into the HVAC unit 40.

[0025] The air conditioner main body 44 has a front side portion 44a and a rear side portion 44b. The front side portion 44a is arranged in the engine room 14. An evaporator (not shown) is housed in the front side portion 44a. The rear side portion 44b is housed in the passenger compartment 16. A blowout port switching device (not shown) for switching from which blowout port in the passenger compartment 16 the air is blown out is provided in the rear side portion 44b.

[0026] The inside / outside air switching device 46 has an inside air intake port 46a, an outside air intake port 46b, and a filter 46c. Air in the passenger compartment 16 is taken in from the inside air intake port 46a. Air outside the vehicle 12 (outside air) is taken in from the outside air intake port 46b. The inside / outside air switching device 46 switches from which of the inside air intake port 46a and the outside air intake port 46b the air is taken in.

[0027] Filter 46c is detachably attached inside the inside / outside air switching device 46. Filter 46c removes fine particles from the air taken in by the blower 48 into the HVAC unit 40 and purifies the air.

[0028] The heat exchange performed by this air conditioner 20 will be briefly described.

[0029] The aforementioned refrigeration cycle circuit (not shown) includes a compressor (not shown), a condenser (not shown), an expansion valve (not shown), an evaporator (not shown), a heater (not shown), etc. In the refrigeration cycle circuit, the compressor compresses the vapor-phase refrigerant to a high temperature and high pressure, the condenser condenses and liquefies the refrigerant by heat exchange with the outside air, the expansion valve decompresses and expands the liquid-phase refrigerant, and the evaporator evaporates the refrigerant by heat exchange with the air used for air conditioning.

[0030] The evaporator (not shown) is provided inside the HVAC unit 40 and cools and dehumidifies the air supplied into the passenger compartment 16 by heat exchange with the refrigerant.

[0031] (Cover member) The cover member 22 is provided in the engine room 14 and attached to the partition wall 18. The cover member 22 is attached from the front of the vehicle toward the rear of the vehicle relative to the passenger compartment 16.

[0032] The cover member 22 is provided with a soundproof member 70 (see FIGS. 3 and 4), which is an example of a damping member, along its inner surface. The soundproof member 70 has at least one of a blocking function of blocking sound and a sound absorption function of absorbing sound. Here, the soundproof member 70 has both a blocking function and a sound absorption function and attenuates sound. The soundproof member 70 is composed of, for example, urethane foam, rubber foam, etc. Also, the soundproof member 70 may have a configuration with an air layer inside. Also, the surface may be formed with irregularities. The soundproof member 70 is configured by appropriately selecting the materials, structures, shapes, and others exemplified above in consideration of the degree of suppressing the intrusion of outside noise into the vehicle cabin and other required specifications. As another example of the damping member, a vibration damping member for suppressing vibration may be provided along the inner surface of the cover member 22. At this time, in addition to the vibration damping function, at least one of the above-described blocking function and sound absorption function may be provided.

[0033] The soundproof member 70 is composed of a plurality of component members 72, 150, 200, 320, 500 (see FIGS. 3 and 4) that are divided into a plurality. In the combined state 600 in which the component members 150, 200, 320, 500 are in contact with each other and combined, the soundproof member 70 provided along the inner surface of the cover body 50 of the cover member 22 is formed by the component members 150, 200, 320, 500. Also, the soundproof member 70 provided along the inner surface of the lid portion 52 of the cover member 22 is formed by the component member 72.

[0034] The cover member 22 covers so as to hide a part of the components of the air conditioner 20 protruding into the engine room 14, such as the blower 48 and the evaporator (not shown), and the opening 30 of the partition wall 18. The cover member 22 prevents the noise in the engine room 14 and the noise outside the vehicle 12 from entering the vehicle cabin 16 through the opening 30.

[0035] As described above, the cover member 22 includes a cover main body 50 and a lid portion 52. The cover main body 50 is attached to the partition wall 18 and forms an upwardly open accommodation space 54 together with the partition wall 18. The lid portion 52 is detachably attached to the cover main body 50 and closes the upper opening 50a of the cover main body 50. Although an opening 30 is formed in the partition wall 18, when the lid portion 52 is attached to the cover member 22, the engine room 14 and the passenger compartment 16 are completely separated by the partition wall 18, the cover main body 50, and the lid portion 52. Note that the cover main body 50 may be directly attached to the partition wall 18 or may be attached to the partition wall 18 with another member interposed therebetween, as long as the engine room 14 and the passenger compartment 16 are completely separated.

[0036] If the lid portion 52 is removed from the cover main body 50 attached to the partition wall 18, the blower 48 can be accessed from the upper opening 50a of the cover main body 50, facilitating maintenance of the blower 48.

[0037] Next, with reference to FIGS. 2 to 8, the cover member 22 will be specifically described. FIG. 2 is a perspective view showing the cover member 22. Note that FIG. 2 shows a state in which the soundproof member 70 is removed. FIG. 3 is a bottom view showing the lid portion 52 of the cover member 22. FIG. 4 is a rear view showing the cover main body 50 of the cover member 22. FIG. 5 is a cross-sectional view taken along line V-V in FIG. 4. FIG. 6 is an explanatory view showing a state in which the left side wall surface 82 of the cover main body 50 is viewed from the inside. FIG. 7 is a perspective view showing the upper end portion of the left side wall constituent member 200. FIG. 8 is a cross-sectional view of a main portion showing a portion where a pipe is inserted through the cover member 22.

[0038] (Lid portion) As shown in FIGS. 2 and 3, the lid portion 52 is formed of, for example, a synthetic resin plate material. The lid portion 52 is formed in a horizontally long shape. The lid portion 52 has an inclined portion 52a that inclines downward toward the front of the vehicle (see FIG. 1). Further, the lid portion 52 is formed in a shape that avoids interference with the structures arranged in the engine room 14.

[0039] As shown in FIG. 3, an upright wall 60 extending in the thickness direction of the lid portion 52 from the inner surface is formed at the periphery of the lid portion 52. A flat surface 62 extends inward from the tip of the upright wall 60. A plurality of tongue pieces 64 extend from the outer surface at the end of the upright wall 60. A through hole 66 is formed in each tongue piece 64.

[0040] (Lid-side component) A lid-side component 72 that constitutes a soundproof member 70 is provided on this lid portion 52.

[0041] The lid-side component 72 has a shape corresponding to the inner surface of the lid portion 52, and the lid-side component 72 is in close contact with the inner surface of the lid portion 52.

[0042] The lid-side component 72 has a predetermined thickness. The lid-side component 72 includes a wall portion 74 extending along the upright wall 60 of the lid portion 52. The wall portion 74 is arranged along the upright wall 60 of the lid portion 52 and reaches the lower part of the flat surface 62.

[0043] (Cover body) As shown in FIGS. 2 and 4, the cover body 50 is formed of, for example, a synthetic resin. The cover body 50 has a horizontally long bottom surface 80 and a left side wall surface 82 extending upward from the left edge of the bottom surface 80. The cover body 50 has a right side wall surface 84 extending upward from the right edge of the bottom surface 80 and a front wall surface 86 connecting the left side wall surface 82 and the right side wall surface 84 and having a lower edge connected to the bottom surface 80.

[0044] Concavities and convexities are formed on the bottom surface 80, the left side wall surface 82, the right side wall surface 84, and the front wall surface 86 of the cover body 50 to avoid interference with the structures arranged in the engine room 14.

[0045] As shown in FIG. 4, lid fixing pieces 88 extending from the outer surface are provided at positions corresponding to the tongue pieces 64 of the lid portion 52 on the upper edge of the cover body 50. A fixing hole 90 is formed in each lid fixing piece 88.

[0046] Thus, with the upper part of the cover body 50 covered by the lid part 52, by fastening a bolt and a nut inserted through the through-hole 66 of the tongue piece 64 and the fixing hole 90 of the lid fixing piece 88 in the lid part 52, the lid part 52 can be fixed to the cover body 50.

[0047] A plurality of main body fixing pieces 100 extending from the outer surface are provided at multiple locations on the trailing edge of the cover body 50. Insertion holes 102 are formed in each of the main body fixing pieces 100. Thus, the cover body 50 can be fixed to the partition wall 18 by screws inserted through the insertion holes 102 of each main body fixing piece 100.

[0048] (Front wall surface) As shown in FIG. 2, on the front wall surface 86, a first front wall convex portion 110 and a second front wall convex portion 112 protruding inward are formed to avoid interference with the structures arranged in the engine room 14. The end faces of the first front wall convex portion 110 and the second front wall convex portion 112 are flat. The second front wall convex portion 112 protrudes more inward than the first front wall convex portion 110.

[0049] A flat first inclined surface 116 is formed between the general surface 114 (the portion other than the first front wall convex portion 110 and the second front wall convex portion 112) of the front wall surface 86 and the first convex surface 110a of the first front wall convex portion 110. A flat second inclined surface 118 is formed between the first convex surface 110a and the second convex surface 112a of the second front wall convex portion 112.

[0050] As shown in FIG. 3, a wiring hole 120 for passing the wiring of the blower motor BM of the blower 48 is formed at the central portion of the upper edge of the front wall surface 86. On the inner surface of the front wall surface 86, a wiring hole flange 122 extending from the opening edge of the wiring hole 120 is formed.

[0051] On the side of the wiring hole 120 in the front wall surface 86, there are formed a vertically long hole 124 and a horizontally long hole 126 through which a refrigerant pipe for flowing the refrigerant is inserted. On the inner surface of the front wall surface 86, a vertically long hole flange 128 extending from the opening edge of the vertically long hole 124 is formed. Also, on the inner surface of the front wall surface 86, a horizontally long hole flange 130 extending from the opening edge of the horizontally long hole 126 is formed.

[0052] In the second front wall convex portion 112 (see FIG. 2) formed at a location on the front wall surface 86 close to the left side wall surface 82, there is formed a heater hole 132 through which a heater pipe is inserted. On the inner surface of the front wall surface 86, a heater hole flange 134 extending from the opening edge of the heater hole 132 is formed.

[0053] In the first front wall convex portion 110 (see FIG. 2) formed at a location on the front wall surface 86 close to the bottom surface 80, there are formed drain holes 136 and 138 through which a drain pipe is inserted. On the inner surface of the front wall surface 86, drain hole flanges 140 and 142 extending from the opening edges of the respective drain holes 136 and 138 are formed.

[0054] And, on the upper edge of the front wall surface 86, a front wall flange portion 144 extending from the inner surface is formed.

[0055] (Front wall component member) On the front wall surface 86, there is provided a front wall component member 150 that constitutes the soundproof member 70.

[0056] The front wall component member 150 has a shape corresponding to the unevenness of the inner surface of the front wall surface 86 and is in close contact with the inner surface of the front wall surface 86.

[0057] Specifically, the front wall component 150 has a flat general part 162 that adheres to the general surface 114 (see FIG. 2) of the front wall surface 86, and a flat first inclined part 164 that adheres to the first inclined surface 116 (see FIG. 2) of the front wall surface 86. Further, the front wall component 150 has a flat first convex part 166 that adheres to the first convex surface 110a (see FIG. 2) of the first front wall convex part 110 of the front wall surface 86, and a flat second inclined part 168 that adheres to the second inclined surface 118 (see FIG. 2) of the front wall surface 86. Additionally, the front wall component 150 has a flat second convex part 169 that adheres to the second convex surface 112a (see FIG. 2) of the second front wall convex part 112 of the front wall surface 86.

[0058] The upper edge of the front wall component 150 has a shape along the front wall flange part 144. The lower edge of the front wall component 150 has a shape along the bottom surface 80. As a result, the vertical movement of the front wall component 150 is restricted by the front wall flange part 144 and the bottom surface 80.

[0059] The left edge of the front wall component 150 has a shape along the left side wall surface 82. The right edge of the front wall component 150 has a shape along the right side wall surface 84. As a result, the horizontal movement of the front wall component 150 is restricted by the left side wall surface 82 and the right side wall surface 84.

[0060] The front wall component 150 has a predetermined thickness and is formed such that the thickness dimension of the upper end portion where the lid part 52 is attached is thicker than other parts.

[0061] A wiring opening 152 is formed at a portion of the front wall component 150 corresponding to the wiring hole 120. The opening edge of the wiring opening 152 surrounds the wiring hole flange 122 of the front wall surface 86.

[0062] A refrigerant opening 154 is formed at a portion of the front wall component 150 corresponding to the vertical long hole 124 and the horizontal long hole 126. The opening edge of the refrigerant opening 154 surrounds the vertical long hole flange 128 and the horizontal long hole flange 130.

[0063] Further, a heater opening 156 is formed at a portion of the front wall component 150 corresponding to the heater hole 132. The opening edge of the heater opening 156 surrounds the heater hole flange 134.

[0064] Drain openings 158 and 160 are formed at portions of the front wall component 150 corresponding to the respective drain holes 136 and 138. The drain openings 158 and 160 surround the respective drain hole flanges 140 and 142.

[0065] And, when the cover body 50 is attached to the partition wall 18, the front wall component 150 is disposed near a blower motor BM serving as a motor of the blower 48 in the air conditioner 20, and the thickness dimension of the proximity portion KB is formed thicker than other portions.

[0066] The right edge of the front wall component 150 has a first front straight portion 170 extending linearly from the upper edge side, a second front straight portion 172 extending obliquely linearly from the first front straight portion 170, and a third front straight portion 174 extending linearly downward from the second front straight portion 172.

[0067] The left edge disposed on the left side wall surface 82 side of the front wall component 150 is formed linearly along the left side wall surface 82 (not shown). The upper edge disposed on the front wall flange portion 144 side of the front wall component 150 is formed linearly along the front wall flange portion 144 (not shown).

[0068] (Left side wall surface) A left wall flange portion 190 extending from the inner surface is formed at the upper edge of the left side wall surface 82. The left wall flange portion 190 is continuous with the front wall flange portion 144. A left wall rear flange portion 192 extending from the inner surface is formed at the rear edge of the left side wall surface 82.

[0069] At the upper end of the left wall rear flange portion 192, a rectangular left sealing member 194 is provided. The left sealing member 194 is a sponge-like component and is formed of, for example, foamed EPDM (ethylene propylene diene rubber). This left sealing member 194 is in close contact with the lid portion 52 attached to the cover body 50 and the partition wall 18 to which the cover body 50 is fixed.

[0070] (Left side wall component) On the left side wall surface 82, a left side wall component 200 that constitutes the soundproof member 70 is provided.

[0071] The left side wall component 200 has a shape corresponding to the inner surface of the left side wall surface 82 and is in close contact with the inner surface of the left side wall surface 82.

[0072] The upper edge of the left side wall component 200 is formed in a straight shape along the left wall flange portion 190. The lower edge of the left side wall component 200 is formed in a straight line along the bottom surface 80. Thereby, the up and down movement of the left side wall component 200 is restricted by the left wall flange portion 190 and the bottom surface 80.

[0073] The front edge of the left side wall component 200 is formed in a shape along the surface of the front wall component 150. The front edge of the left side wall component 200 is composed of a plurality of straight portions (not shown) formed in a straight line that matches the surface shape of the front wall component 150.

[0074] The rear edge of the left side wall component 200 is formed in a straight line along the left wall rear flange portion 192. Thereby, the front and rear movement of the left side wall component 200 is restricted by the front wall component 150 and the left wall rear flange portion 192.

[0075] The left side wall component 200 has a predetermined thickness. The left side wall component 200 is formed such that the thickness dimension of the upper end portion to which the lid portion 52 is attached is thicker than other portions.

[0076] (Right side wall surface) At the upper edge of the right side wall surface 84, a right wall flange portion 300 extending from the inner surface is formed. The right wall flange portion 300 is continuous with the front wall flange portion 144. Thereby, at the upper edge of the cover body 50, the front wall flange portion 144, the left wall flange portion 190, and the right wall flange portion 300 are continuously formed.

[0077] Also, at the rear edge of the right side wall surface 84, a right wall rear flange portion 302 extending from the inner surface is formed.

[0078] At the upper end portion of the right wall rear flange portion 302, a rectangular right sealing member 304 is provided. The right sealing member 304 is a sponge-like component and is formed of, for example, foamed EPDM (ethylene propylene diene monomer rubber). This right sealing member 304 is in close contact with the lid portion 52 attached to the cover body 50 and the partition wall 18 to which the cover body 50 is fixed.

[0079] As shown in FIG. 2, at the lower portion of the right side wall surface 84, a bottom side inclined surface 310 that gently slopes downward as it goes toward the bottom surface 80 and a front side inclined surface 312 that gently slopes upward as it goes from the bottom side inclined surface 310 toward the front wall surface 86 are formed.

[0080] (Right side wall component) As shown in FIG. 4, on this right side wall surface 84, a right side wall component 320 that constitutes the soundproof member 70 is provided.

[0081] The right side wall component 320 has a shape corresponding to the inner surface of the right side wall surface 84 and is in close contact with the inner surface of the right side wall surface 84.

[0082] Specifically, the lower portion of the right side wall component 320 is formed in a shape along the bottom side inclined surface 310 (see FIG. 2) of the right side wall surface 84 and has a bottom side inclined portion 322 that is in close contact with the bottom side inclined surface 310. The edge portion 322a of the bottom side inclined portion 322 is formed in a straight line shape. Also, the lower portion of the right side wall component 320 is formed in a shape along the front side inclined surface 312 (see FIG. 2) of the right side wall surface 84 and has a front side inclined portion 324 that is in close contact with the front side inclined surface 312.

[0083] The right side wall component 320 has a predetermined thickness. The right side wall component 320 is formed such that the thickness dimension of the upper end portion to which the lid portion 52 is attached is thicker than other portions.

[0084] In this way, the front wall component 150, the left side wall component 200, and the right side wall component 320 have their upper end portions, where engine noise easily intrudes and which are close to the passengers in the passenger compartment 16, formed with a thicker thickness, enhancing the sound insulation effect.

[0085] The upper edge of the right side wall component 320 is formed in a straight line along the right wall flange portion 300. The upper edge of the right side wall component 320 overlaps with the right wall flange portion 300. The lower portion of the right side wall component 320 has the bottom side inclined portion 322 in close contact with the bottom side inclined surface 310 (see FIG. 2).

[0086] Also, the lower portion of the right side wall component 320 has the front side inclined portion 324 in close contact with the front side inclined surface 312 (see FIG. 2). Thereby, the vertical movement of the right side wall component 320 is restricted by the right wall flange portion 300 and the bottom side inclined surface 310.

[0087] The front edge of the right side wall component 320 has a first left wall surface straight portion 330 extending linearly from the upper edge side, a second left wall surface straight portion 332 extending obliquely in a straight line direction from the first left wall surface straight portion 330, and a third left wall surface straight portion 334 extending downward in a straight line from the second left wall surface straight portion 332.

[0088] The first left wall surface straight portion 330 is provided at a position corresponding to the first front surface straight portion 170 of the front wall component 150, and the first left wall surface straight portion 330 is overlapped along the first front surface straight portion 170. The second left wall surface straight portion 332 is provided at a position corresponding to the second front surface straight portion 172 of the front wall component 150, and the second left wall surface straight portion 332 is overlapped along the second front surface straight portion 172. The third left wall surface straight portion 334 is provided at a position corresponding to the third front surface straight portion 174 of the front wall component 150, and the third left wall surface straight portion 334 is overlapped along the third front surface straight portion 174.

[0089] The trailing edge of the right side wall component 320 is formed in a straight line along the right wall rear flange portion 302. The trailing edge of the right side wall component 320 overlaps with the right wall rear flange portion 302.

[0090] As a result, the right side wall component 320 is restricted from moving in the front-rear direction by the respective front straight portions 170, 172, 174 of the front wall component 150 and the right wall rear flange portion 302.

[0091] (Bottom surface) On the bottom surface 80, a first bottom surface convex portion 400 and a second bottom surface convex portion 402 that protrude inward are formed to avoid interference with the structures arranged in the engine room 14 (see FIG. 2).

[0092] A bottom surface rear flange portion 404 that extends from the inner surface is formed at the trailing edge of the bottom surface 80. The bottom surface rear flange portion 404 is continuous with the left wall rear flange portion 192 and the right wall rear flange portion 302. As a result, at the trailing edge of the cover body 50, the left wall rear flange portion 192, the bottom surface rear flange portion 404, and the right wall rear flange portion 302 are continuously formed.

[0093] (Bottom surface component) A bottom surface component 500 that constitutes the sound insulation member 70 is provided on the bottom surface 80.

[0094] The bottom surface component 500 has a shape corresponding to the uneven bottom surface 80 and is in close contact with the inner surface of the bottom surface 80. The bottom surface component 500 has a predetermined thickness.

[0095] The left edge of the bottom surface component 500 is formed in a straight line along the surface of the left side wall component 200. The left edge of the bottom surface component 500 overlaps with the left side wall component 200.

[0096] The right edge 500a of the bottom surface component 500 is formed in a straight line along the edge portion 322a of the bottom side inclined portion 322 of the right side wall component 320. The right edge 500a of the bottom surface component 500 overlaps with the edge portion 322a of the bottom side inclined portion 322 of the right side wall component 320.

[0097] As a result, the bottom surface constituent member 500 is restricted from moving in the left - right direction by the edge portions 322a of the bottom - side inclined portions 322 of the left - side wall constituent member 200 and the right - side wall constituent member 320.

[0098] The front edge of the bottom surface constituent member 500 has a portion corresponding to the general portion 162 of the front - wall constituent member 150, a portion corresponding to the first convex portion 166 of the front - wall constituent member 150, and a portion corresponding to the second convex portion 169 of the front - wall constituent member 150.

[0099] The front edge of the bottom surface constituent member 500 has a first bottom - surface straight portion 502 corresponding to the general portion 162 of the front - wall constituent member 150 formed in a straight line, and the first bottom - surface straight portion 502 overlaps with the general portion 162 of the front - wall constituent member 150. The front edge of the bottom surface constituent member 500 has a second bottom - surface straight portion 504 corresponding to the first inclined portion 164 of the front - wall constituent member 150 formed in a straight line, and the second bottom - surface straight portion 504 overlaps with the first inclined portion 164 of the front - wall constituent member 150.

[0100] The front edge of the bottom surface constituent member 500 has a third bottom - surface straight portion 506 corresponding to the first convex portion 166 of the front - wall constituent member 150 formed in a straight line, and the third bottom - surface straight portion 506 overlaps with the first convex portion 166 of the front - wall constituent member 150. The front edge of the bottom surface constituent member 500 has a fourth bottom - surface straight portion 508 corresponding to the second inclined portion 168 of the front - wall constituent member 150 formed in a straight line, and the fourth bottom - surface straight portion 508 overlaps with the second inclined portion 168 of the front - wall constituent member 150 (not shown in the figure).

[0101] The front edge of the bottom surface constituent member 500 has a fifth bottom - surface straight portion 509 corresponding to the second convex portion 169 of the front - wall constituent member 150 formed in a straight line, and the fifth bottom - surface straight portion 509 overlaps with the second convex portion 169 of the front - wall constituent member 150.

[0102] The rear edge of the bottom surface constituent member 500 is formed in a straight line along the bottom - surface rear flange portion 404. The rear edge of the bottom surface constituent member 500 overlaps with the bottom - surface rear flange portion 404. As a result, the bottom surface constituent member 500 is restricted from moving in the front - rear direction by the front - wall constituent member 150 and the bottom - surface rear flange portion 404.

[0103] In this way, the edges of each of the constituent members 150, 200, 320, and 500 that contact other adjacent constituent members (150, 200, 320, 500) are formed in a straight line. Also, in the combined state 600 in which the constituent members 150, 200, 320, and 500 are combined, one adjacent constituent member (150, 200, 320, 500) and the other constituent member (150, 200, 320, 500) are configured such that their ends overlap each other.

[0104] (Weatherstrip) On the upper edge of the cover body 50, a weatherstrip 610 (see FIG. 5) that is in close contact with the flat surface 62 of the lid portion 52 is provided across the front wall flange portion 144, the left wall flange portion 190, and the right wall flange portion 300 (not shown). Also, on the rear edge of the cover body 50, a weatherstrip 610 that is in close contact with the partition wall 18 is provided across the left wall rear flange portion 192, the bottom surface rear flange portion 404, and the right wall rear flange portion 302 (not shown).

[0105] Thereby, in a state where the lid portion 52 is attached to the cover body 50, the intrusion of sound into the accommodation space 54 formed inside the cover body 50 is suppressed, and the airtightness and watertightness of the accommodation space 54 are ensured.

[0106] As shown in FIG. 5, a state in which the weatherstrip 610 is provided on the left wall flange portion 190 of the cover body 50 will be specifically described as an example. Note that the weatherstrip 610 is provided in the same manner as the following description at other locations as well.

[0107] As shown in FIG. 5, a plurality of clip insertion holes 620 are provided at multiple locations on the left wall flange portion 190 of the cover body 50. The hook 622a at the tip of the clip 622 provided on the weatherstrip 610 is inserted and locked into each clip insertion hole 620.

[0108] The weather strip 610 is made of, for example, a rubber material. The weather strip 610 is formed in a hollow triangular cross-section. On one slope of the weather strip 610, an extension piece 624 extending substantially perpendicular to the slope is formed.

[0109] In the fixed state, the top 626 of the weather strip 610 protrudes upward. In this fixed state, the extension piece 624 extends obliquely outward as it goes in the protruding direction of the top 626.

[0110] As shown in FIGS. 5 and 7, a groove portion 628 in which the tip of the clip 622 is disposed is formed on the end face 200a of the left side wall constituent member 200 that is disposed at the lower part of the left wall flange portion 190 and formed with a wall thickness. Further, on the end face 200a of the left side wall constituent member 200, a raised portion 630 higher than the groove portion 628 is provided on the left side wall surface 82 side with respect to the groove portion 628 (see FIGS. 5 and 7).

[0111] As shown in FIG. 5, this raised portion 630 is disposed between the tip of the clip 622 and the left side wall surface 82 in a state where the left side wall constituent member 200 is disposed along the inner surface of the left side wall surface 82. Thereby, when the tip of the clip 622 abuts on the raised portion 630, the fall of the left side wall constituent member 200 disposed along the left side wall surface 82 is suppressed.

[0112] Thereby, a clip 622 is provided as a support member for supporting the end of the left side wall constituent member 200 along the left side wall surface 82 of the cover body 50 at the upper end of the left side wall surface 82 which is the end of the cover body 50 surrounding a part of the upper opening 50a.

[0113] (Mounting procedure) When installing the soundproof member 70 on the cover body 50, first, attach the front wall component member 150 that constitutes the soundproof member 70 to the inner surface of the front wall surface 86. Thereby, the vertical movement of the front wall component member 150 is restricted by the front wall flange portion 144 and the bottom surface 80, and the lateral movement is restricted by the left side wall surface 82 and the right side wall surface 84. Also, the toppling of the front wall component member 150 is suppressed by the clip 622.

[0114] Then, attach the left side wall component member 200 that constitutes the soundproof member 70 to the inner surface of the left side wall surface 82, and restrict the vertical movement of the left side wall component member 200 by the left wall flange portion 190 and the bottom surface 80. Also, the toppling of the left side wall component member 200 is suppressed by the clip 622.

[0115] At this time, by overlapping and pressing the end face of the front edge of the left side wall component member 200 against the surface of the front wall component member 150, the toppling of the left edge portion of the front wall component member 150 is suppressed.

[0116] Next, attach the right side wall component member 320 that constitutes the soundproof member 70 to the inner surface of the right side wall surface 84, and restrict the vertical movement of the right side wall component member 320 by the right wall flange portion 300 and the bottom side inclined surface 310. Also, the toppling of the right side wall component member 320 is suppressed by the clip 622.

[0117] At this time, by overlapping and pressing the end face of the front edge of the right side wall component member 320 against the surface of the front wall component member 150, the toppling of the right edge portion of the front wall component member 150 is suppressed.

[0118] Then, attach the bottom surface component member 500 that constitutes the soundproof member 70 to the inner surface of the bottom surface 80.

[0119] At this time, by overlapping and pressing the end face of the left edge of the bottom surface constituent member 500 against the surface of the left side wall constituent member 200, the movement of the lower end portion of the left side wall constituent member 200 is restricted. Also, by overlapping and pressing the end face of the right edge 500a of the bottom surface constituent member 500 against the surface of the right side wall constituent member 320, the movement of the lower end portion of the right side wall constituent member 320 is restricted. Further, by overlapping and pressing the end face of the front edge of the bottom surface constituent member 500 against the surface of the front wall constituent member 150, the movement of the lower end portion of the front wall constituent member 150 is restricted.

[0120] And when attaching this cover body 50 to the partition wall 18, wirings, refrigerant pipes, heater pipes, drain pipes, etc. connected to the air conditioner 20 are inserted into the respective holes 120, 124, 126, 132, 136, 138 formed in the cover body 50.

[0121] As shown in FIG. 8, the case where the refrigerant pipe 700 is inserted into the vertically long hole 124 of the front wall surface 86 will be described as an example.

[0122] A seal member 702 is provided on the outer peripheral portion of the refrigerant pipe 700 inserted into the vertically long hole 124. This seal member 702 adheres to the vertically long hole flange 128 extending from the opening edge portion of the vertically long hole 124 and the portion of the front wall constituent member 150 surrounding the vertically long hole flange 128.

[0123] This seal member 702 is formed of foamed PE (polyethylene) and foamed EPDM (ethylene propylene diene rubber). By the seal member 702 adhering to the vertically long hole flange 128 and the front wall constituent member 150, sound insulation, water tightness, and air tightness are ensured.

[0124] According to the above embodiments, the following effects are obtained.

[0125] A partition wall 18 that separates the passenger compartment 16 where the passengers ride from the outside of the passenger compartment 16 and has an opening 30 where a vehicle air conditioner 20 provided across the inside and outside of the passenger compartment 16 is disposed, and a cover member 22 that covers at least a part of the vehicle air conditioner 20 provided outside the passenger compartment 16 and the opening 30. The cover structure 10 of the vehicle air conditioner 20 includes a damping member provided inside the cover member 22 for attenuating sound. The damping member is composed of a plurality of constituent members 150, 200, 320, 500 that are in contact with each other and combined to form the damping member.

[0126] In this configuration, a damping member for attenuating sound is provided inside the cover member 22 that covers at least a part of the vehicle air conditioner 20 provided outside the passenger compartment 16 and the opening 30. This damping member is composed of the plurality of divided constituent members 150, 200, 320, 500. Therefore, even when the inside of the cover member 22 is formed in a surface shape having a curved surface, a stepped surface, or the like, the plurality of constituent members 150, 200, 320, 500 can be arranged in contact with each other at corresponding locations according to the surface shape inside the cover member.

[0127] Therefore, it is possible to suppress the intrusion of external vehicle noise into the passenger compartment 16 from the opening 30 for the vehicle air conditioner 20 formed in the partition wall 18 that separates the inside and outside of the passenger compartment, compared with the case of covering the opening with a resin cover made of a single material.

[0128] As a result, for example, noise generated by various parts of the vehicle outside the passenger compartment, such as an engine, a transmission, or a motor, an inverter, and a DC converter of an electric vehicle, disposed in the engine room 14, and vehicle external noise such as road noise transmitted from outside the vehicle into the vehicle can be suppressed compared with the case of covering the opening with a resin cover made of a single material.

[0129] And in this embodiment, a soundproof member 70, which is an example of a damping member, has a blocking function of blocking sound and a sound-absorbing function of absorbing sound. Therefore, the outside noise of the vehicle compartment is suppressed from entering the vehicle compartment 16 by the blocking function of the soundproof member 70, and the sound generated by a motor or the like in the cover member 22 can be suppressed from entering the vehicle compartment 16 by absorbing the sound by the sound-absorbing function.

[0130] Furthermore, in this embodiment, each of the constituent members 72, 150, 200, 320, and 500 that constitute the soundproof member 70, which is an example of a damping member, can be arranged in close contact with the inner surface of the cover member 22 without gaps. Therefore, even when the cover member 22 is thinned for weight reduction, it is possible to obtain an effect of suppressing the intrusion of noise into the vehicle compartment 16 by the cover member 22.

[0131] Also, the edge portions where the respective constituent members 150, 200, 320, and 500 are in contact with other adjacent constituent members (among 70, 150, 200, 320, and 500) are formed in a straight line.

[0132] With this configuration, it is possible to simplify the structures of the respective constituent members 150, 200, 320, and 500 as compared with the case where the edge portions where the adjacent constituent members (150, 200, 320, and 500) are in contact are formed in a complex curve. Also, the combination work of the adjacent constituent members (150, 200, 320, and 500) becomes easy.

[0133] Also, in the combined state 600, one of the adjacent constituent members (150, 200, 320, and 500) and the other constituent member (150, 200, 320, and 500) overlap each other at their ends.

[0134] With this configuration, since the ends of the adjacent constituent members (150, 200, 320, and 500) overlap each other, it is possible to suppress sound leakage as compared with the case where a gap is generated between the ends of the adjacent constituent members (150, 200, 320, and 500).

[0135] Further, the cover member 22 includes a cover body 50 that forms an accommodation space 54 that is open upward while covering at least a part of the vehicle air conditioner 20 and the opening 30, and a lid portion 52 that closes the upper opening 50a of the cover body 50. At an end portion of the cover body 50 that surrounds a part of the upper opening 50a, a clip 622 is provided as a support member for supporting the end portions of the respective component members 150, 200, and 320 along the side wall surfaces (82, 84, 86) of the cover body 50.

[0136] In this configuration, a clip 622 is provided at an end portion of the cover body 50 for supporting the end portions of the respective component members 150, 200, and 320 along the side wall surfaces (82, 84, 86) of the cover body 50. Therefore, it is possible to suppress the toppling of the respective component members 150, 200, and 320 arranged along the side wall surfaces (82, 84, 86) by the clip 622.

[0137] Here, in the case of the engine room 14, due to the arrangement relationship of the cover member 22, the intrusion of sound from the upper side of the cover member 22 tends to be large, and each of the component members 150, 200, and 320 of the sound insulation member 70 is formed with a thicker upper side.

[0138] And the clip 622 that supports the end portions of the respective component members 150, 200, and 320 is provided at an end portion of the cover body 50 that surrounds a part of the upper opening 50a. Therefore, the support position by the clip 622 can be set at the end portions of the respective component members 150, 200, and 320 formed with a thicker wall. Thus, compared with the case where the end portions of the thin-walled component members are supported by the clip 622, the configuration of the support structure becomes easier.

[0139] Further, the cover member 22 includes a cover body 50 that forms an upwardly open accommodation space 54 together with the partition wall 18, and a lid portion 52 that closes the upper opening 50a of the cover body 50. Therefore, if the lid portion 52 is opened to open the upper opening 50a, maintenance of the vehicle air conditioner 20 becomes possible.

[0140] In addition, a part of the vehicle air conditioner 20 disposed outside the passenger compartment 16 includes a blower motor BM which is a motor of the blower 48, and the soundproof member 70 provided on the cover member 22 has a greater thickness dimension at a portion (KB) disposed near the blower motor BM than at other portions.

[0141] In this configuration, the blower motor BM which is a motor of the blower 48 generates noise during operation, and there is a risk that the generated noise may enter the passenger compartment 16. Therefore, by making the thickness dimension of the portion (KB) of the soundproof member 70 disposed near the blower motor BM greater than that of other portions, it is possible to reduce the intrusion of the noise generated by the blower motor BM into the passenger compartment 16.

[0142] In particular, in the case of the soundproof member 70 having a sound absorption function, it is possible to enhance the absorption power of the noise generated by the blower motor BM.

[0143] As described above, the embodiments of the present invention have been explained, but the above embodiments merely show a part of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

Explanation of Reference Numerals

[0144] 10 Cover structure 12 Vehicle 14 Engine room (drive source room) 16 Passenger compartment 18 Partition wall 20 Vehicle air conditioner 22 Cover member 30 Opening 48 Blower 50 Cover body 50a Upper opening 52 Lid portion 54 Accommodation space 72 Lid side component 82 Left side wall surface 84 Right side wall surface 86 Front wall surface 150 Front wall component 170 First front straight portion 172 Second front straight portion 174 Third front straight part 200 Left side wall forming member 320 Right side wall forming member 330 First left wall surface straight part 332 Second left wall surface straight part 334 Third left wall surface straight part 500 Bottom surface forming member 502 First bottom surface straight part 504 Second bottom surface straight part 506 Third bottom surface straight part 508 Fourth bottom surface straight part 509 Fifth bottom surface straight part 600 Assembled state 622 Clip (support member) BM Blower motor KB Proximity part

Claims

1. A partition wall that separates the inside and outside of the passenger compartment where the passengers ride and has an opening where a vehicle air conditioner provided across the inside and outside of the passenger compartment is arranged, and A cover member that covers at least a part of the vehicle air conditioner provided outside the passenger compartment and the opening, A cover structure for a vehicle air conditioner comprising: An attenuation member provided inside the cover member for attenuating sound, The attenuation member is composed of a plurality of constituent members that are in contact with each other and combined to form the attenuation member, and is provided along the cover member in a state of being in close contact with the inner surface of the cover member, A cover structure for a vehicle air conditioner.

2. The cover structure for a vehicle air conditioner according to Claim 1, wherein The edge where the constituent member contacts another adjacent constituent member is formed in a straight line, A cover structure for a vehicle air conditioner.

3. The cover structure for a vehicle air conditioner according to Claim 2, wherein In the combined state, one of the adjacent constituent members and the other constituent member overlap each other at their ends, A cover structure for a vehicle air conditioner.

4. The cover structure for a vehicle air conditioner according to Claim 1, wherein The cover member has a cover body that forms an accommodation space with an upper opening in a state of covering at least a part of the vehicle air conditioner and the opening, and a lid portion that closes the opening at the upper part of the cover body, A support member for supporting the end portion of the constituent member along the side wall surface of the cover body is provided at an end portion of the cover body that surrounds a part of the upper opening, A cover structure for a vehicle air conditioner.

5. The cover structure for a vehicle air conditioner according to Claim 1, wherein A part of the vehicle air conditioner arranged outside the passenger compartment is a motor of a blower, The attenuation member provided on the cover member has a greater thickness at a portion disposed near the motor than at other portions, A cover structure for a vehicle air conditioner.

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