Ceiling duct structure of vehicle

Abstract

To provide a ceiling duct structure of a vehicle whose assembly and maintenance are easy.SOLUTION: A ceiling duct structure is provided with two air ducts 2 facing in a vehicle width direction. The air ducts 2 are mounted on ceiling panels 14. Sides of the air ducts 2 are supported by a pair of support side plates 16, 17 facing in the vehicle width direction. Fixing plates 18 for connecting upper ends of the pair of support side plates 16, 17 like a bridge fix the upper parts of the air ducts 2. An air volume adjuster 10 for adjusting air volume to be sent out to a passenger compartment from the air duct 2 is provided in a lower surface structure of the air duct 2. On the ceiling panels 14, blowout holes 14a are formed at a position facing the air volume adjuster 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ceiling duct structure for a vehicle that is formed so as to extend in the vehicle length direction within a ceiling unit of a railway vehicle or the like. [Background technology]

[0002] 2. Description of the Related Art In a ceiling unit of a vehicle such as a railway car, a duct is formed extending in the vehicle length direction to distribute air sent from an air conditioner evenly throughout the vehicle interior.

[0003] Fig. 5 shows a cross-sectional view of a pair of air outlet ducts 101 configured in a conventional ceiling duct structure 100. Air volume adjustment plates 102 are installed upright inside this air outlet duct 101, and are configured to be able to adjust the volume of air sent into the passenger compartment from air outlets 103. Such technology is described in Patent Document 1. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-138638 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-described air outlet duct 101 requires that heat insulating material 104 also be attached to the surface of air volume adjusting plate 102. This increases the bonding area and requires the use of a lot of adhesive, making assembly difficult. In addition, the interior of air outlet duct 101 is divided into two chambers, making the structure complex and reducing maintainability.

[0006] Therefore, an object of the present invention is to provide a ceiling duct structure for a vehicle that is easy to assemble and maintain. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the vehicle ceiling duct structure of the present invention is a vehicle ceiling duct structure that sends air in the vehicle length direction, and is characterized by comprising: an air duct in which an upper wall, a lower wall, and a pair of side walls opposing each other in the vehicle width direction form a section extending in the vehicle length direction, an air flow regulator provided on the lower wall for adjusting the air flow rate sent into the vehicle cabin, a ceiling panel arranged to cover the air duct and the air flow regulator from below, and having an outlet hole formed at a position opposite the air flow regulator to connect the air duct and the vehicle cabin, two support side plates erected above the ceiling panel and supporting both side surfaces of the air duct, and a fixing plate that bridges the upper ends of the two support side plates and fixes the air duct from above.

[0008] In addition to the above configuration, the vehicle ceiling duct structure of the present invention is characterized in that a slit is formed in the lower wall of the air duct so as to extend in the vehicle length direction, the cross-sectional shape of the air volume adjuster is formed in a hat shape, the crown portion of the air volume adjuster having a long hole formed therein is fitted into the slit from the outside, and the brim portion is arranged so as to be joined to the outer surface of the lower wall.

[0009] In addition to the above configuration, the vehicle ceiling duct structure of the present invention is characterized in that the long hole is provided with a guide portion that guides air flowing in the vehicle length direction and sends it into the vehicle compartment. [Effects of the Invention]

[0010] As described above, according to the present invention, the air duct is simply fitted into the area formed by two supporting side plates above the ceiling panel without using adhesive, and then it is simply held down from above with a fixing plate and fixed with rivets, etc., making assembly easy. In addition, the air duct can be replaced simply by removing the rivets, making maintenance and specification changes easy.

[0011] In addition to the above-mentioned effects, the present invention also makes it possible to adjust the volume of airflow using the airflow adjuster installed in the slit without dividing the interior space of the air duct into two sections, which simplifies the structure and reduces parts costs and installation time.

[0012] In addition to the above effects, the present invention also makes it possible to adjust the bias in the air flow caused by differences in distance from the air conditioner, etc., using individual guidance sections, thereby making it possible to evenly align and balance the air flow. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a ceiling duct structure according to the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the ceiling duct structure. [Figure 3] FIG. [Figure 4] 10A and 10B show a modified example of the air volume regulator, in which (a) is a perspective view and (b) is a side view. [Figure 5] FIG. 1 is a diagram showing the configuration of a conventional ceiling duct. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] 1 is a perspective view of a ceiling duct structure 1 of the present invention. For ease of explanation, equipment and structures such as an air conditioning device other than the ceiling duct structure 1 are omitted from the illustration.

[0016] The ceiling duct structure 1 of the present invention is formed symmetrically in the vehicle width direction. Each of the pair of ceiling duct structures 1 formed in the vehicle width direction is provided with an air duct 2 formed to extend in the vehicle length direction. Each of these air ducts 2 is provided with an air volume adjuster 10 on the lower side.

[0017] Air flow regulator 10 is provided to adjust the amount of air sent out from air duct 2 toward the vehicle interior. Ceiling panel 14 is arranged to cover air duct 2 and air flow regulator 10 from below. This ceiling panel 14 is formed with outlet holes 14a (see FIG. 2) that blow out air that passes through air flow regulator 10, as will be described later.

[0018] FIG. 2 is an exploded perspective view of the ceiling duct structure 1.

[0019] 2 shows an exploded view of one side of the ceiling duct structure 1 (see FIG. 1) which is configured in pairs in the vehicle width direction. A plurality of outlet holes 14a extending in the vehicle length direction are formed in the ceiling panel 14. These outlet holes 14a are formed to penetrate so as to communicate the air duct 2 with the vehicle interior (see FIG. 1). A pair of support side plates 16, 17 facing each other in the vehicle width direction are provided on the upper surface of the ceiling panel 14.

[0020] The air duct 2 is placed on the ceiling panel 14 so as to be sandwiched between a pair of support side plates 16, 17. The air duct 2 is then fixed from above by a plurality of fixing plates 18 that are provided so as to bridge the upper ends of the pair of support side plates 16, 17.

[0021] Rivets 12 (fastening parts) are used to join the ceiling panel 14 to the supporting side plates 16, 17, and to join the supporting side plates 16, 17 to the fixing plate 18. As can be seen from FIG. 2, the air duct 2 is fixed to the supporting side plates 16, 17 formed on the ceiling panel 14 without using adhesive or fastening parts. and a fixing plate 18.

[0022] This configuration eliminates the waiting time required for the adhesive to harden, improving the efficiency of the processing work.

[0023] It also facilitates the maintenance and replacement of air duct 2. Because air duct 2 can be easily replaced, it becomes possible to flexibly change to an air duct 2 with different specifications in response to changes in the equipment inside the ceiling unit, such as air conditioning.

[0024] FIG. 3 is an exploded perspective view of the air duct 2. As shown in FIG.

[0025] The air duct 2 is formed into a section extending in the vehicle length direction by an upper wall 4, a lower wall 6, and a pair of side walls 8, 9 facing each other in the vehicle width direction. A slit 6a is formed in the lower wall 6 so as to extend in the vehicle length direction. The above-mentioned air volume regulator 10, which regulates the amount of air sent from the air duct 2 to the vehicle interior, is fitted into and disposed in this slit 6a.

[0026] The air flow adjuster 10 is provided at a position opposite to the air outlet 14a (see FIG. 2) formed in the ceiling panel 14. The cross section of this air flow adjuster 10 is hat-shaped, and the brim portion 10b is joined to the outer surface of the lower wall 6, and the crown portion 10a is positioned so as to fit into the slit 6a. The crown portion 10a has a plurality of elongated holes 10a1 formed in it so as to extend in the vehicle length direction.

[0027] In conventional ducts, a space called a chamber is formed just before the air is blown into the passenger compartment by dividing the duct into two rooms using a plate that is erected to adjust the air volume, but in the configuration according to this embodiment, air volume adjuster 10 is provided inside bottom wall 6, making it possible to configure air duct 2 as a single room. As shown in Figure 3, air volume adjuster 10 is fixed to bottom wall 6 with rivets 12.

[0028] FIG. 4 shows a modified example of the air volume adjuster 10, where (a) is a perspective view and (b) is a side view.

[0029] As shown in FIG. 4(a), an elongated hole 10a1 is formed in the crown portion 10a of the air flow adjuster 10, and an inclined guide portion 10a2 is provided at one end in the vehicle length direction of the elongated hole 10a1.

[0030] 4(b) shows a schematic diagram of air flowing in the air duct 2 (see FIG. 3) in the vehicle length direction being guided into the vehicle compartment by guide portion 10a2 provided at an angle on air volume regulator 10. When guide portion 10a2 is provided on air volume regulator 10 in this way, it is possible to equalize the air flow that tends to be biased in the vehicle length direction depending on the distance from the air conditioner by adjusting guide portion 10a2.

[0031] 4(a) and 4(b) show an example in which all the guide portions 10a2 have the same shape and size. However, it is also possible to design the guide portions 10a2 with different sizes and shapes so that the guide portions 10a2 located further away from the air conditioner can guide air toward the vehicle interior more efficiently than the guide portions 10a2 located closer to the air conditioner.

[0032] The configuration described above is one example of the present invention, and further includes the following modifications.

[0033] (1) In the above embodiment, a configuration in which a plurality of elongated holes 10a1 are formed in the crown portion 10a of the air flow regulator 10 is shown, but a configuration in which a plurality of holes having a shape other than elongated holes are formed may also be used. Furthermore, holes do not have to be formed in the same shape in the vehicle length direction.

[0034] (2) In the above embodiment, the elongated hole 10a1 is formed on the top surface of the crown portion 10a of the air flow adjuster 10. However, the present invention is not limited to this, and the elongated hole may be formed on the side surface of the crown portion 10a.

[0035] (3) In the above embodiment, the air flow adjuster 10 is configured to be fitted from the outside into the slit 6a formed in the air passage 2. However, this is not limiting, and the air flow adjuster 10 may be configured to be fitted from the inside into the slit 6a.

[0036] (4) In the above embodiment, an example has been shown in which two opposing support side plates 16, 17 support one air duct 2. However, the support side plates 16, 17 may be made up of multiple members, like the fixed plate 18. Furthermore, the fixed plate 18 may be made up of a single plate, like the support side plates 16, 17. [Industrial Applicability]

[0037] The vehicle ceiling duct structure of the present invention is useful for ceiling units installed in long vehicle bodies such as railway cars and buses. [Explanation of symbols]

[0038] 1 Ceiling duct structure 2 Wind path 4 Upper wall 6 Lower wall 6a Slit 8, 9 side wall 10 Air volume adjuster 10a Crown part 10a1 long hole 10a2 Induction part 10b Brim 12 Rivets 14 Ceiling Panel 14a Air outlet 16, 17 Support side plate 18 Fixed plate 100 Conventional ceiling duct structure 101 Air outlet duct 102 Air volume adjustment board 103 Air outlet 104 Insulation

Claims

1. A ceiling duct structure for a vehicle that sends air in the vehicle length direction, an air passage that defines a section extending in a vehicle length direction by an upper wall, a lower wall, and a pair of side walls that face each other in a vehicle width direction, and an air volume adjuster that adjusts the volume of air sent into the vehicle compartment is provided in the lower wall; a ceiling panel disposed to cover the air duct and the air volume adjuster from below, the ceiling panel having an outlet hole formed at a position opposite the air volume adjuster, the outlet hole communicating between the air duct and the vehicle interior; Two support side plates are erected above the ceiling panel and support both side surfaces of the air duct; a fixing plate that bridges the upper ends of the two support side plates and fixes the air duct from above; A vehicle ceiling duct structure comprising:

2. A slit is formed in the lower wall of the air duct so as to extend in the vehicle length direction, 2. The vehicle ceiling duct structure according to claim 1, wherein the cross-sectional shape of the airflow adjuster is hat-shaped, and the crown portion of the airflow adjuster having a long hole formed therein is fitted into the slit from the outside, and the brim portion is joined to the outer surface of the lower wall.

3. 3. The vehicle ceiling duct structure according to claim 2, wherein the elongated hole is provided with a guide portion that guides air flowing in the vehicle length direction and sends it into the vehicle interior.

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