JP7236305B2 - seat air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seat air conditioner that supplies conditioned air to seats of a railway vehicle.

In general, a railroad vehicle blows out conditioned air (warm air, cold air) from the ceiling or side walls of the vehicle according to the environment such as the temperature and humidity inside the vehicle to prepare the riding environment. In addition, in order to cope with differences in thermal sensations of individual passengers, conditioned air is blown out from each seat to prepare an air-conditioned environment suitable for individual passengers.

For example, Patent Document 1 discloses a seat air conditioner capable of blowing conditioned air from a seat. This seat air conditioner blows out conditioned air (cold air) from a cold air discharge grill provided on the back of the seat back (backrest) toward the rear seat, or discharges warm air provided at the bottom of the seat. By blowing out conditioned air (warm air) from the grille to the vicinity of the passenger's feet, the boarding environment is arranged according to the individual passenger.

Further, Patent Document 2 discloses a seat air conditioner that blows out conditioned air from the outer sleeves (armrests) of a convertible seat toward a passenger. In this seat air conditioner, the installation position of the air duct provided inside the outer sleeve is symmetrical with respect to the rotation center axis with respect to the footrest. By simply reversing the arrangement and direction, conditioned air can be sent without changing the relative positions of the air ducts and auxiliary ducts that have been replaced by the direction change of the seat.

JP-A-8-85456 JP 2010-137651 A

However, in the seat air conditioner described in Patent Document 1 described above, the blowing direction of the conditioned air when the seats are arranged facing each other is not taken into consideration, and the cool air discharge provided on the back of the backrest of the seat There is a problem that the conditioned air blown out from the grill ends up being blown toward the backrests of the seats that face each other in the longitudinal direction. Further, in the seat air conditioner described in Patent Document 2, when the seat is changed, the connection between the air duct and the auxiliary duct is released, and the inside of the passage of the air duct and the auxiliary duct is exposed to the outside. . In this configuration, foreign matter such as dust and dirt can enter the air duct and the auxiliary duct, which poses a problem in practical use.
In recent years, so-called floating floor structures have been adopted in order to reduce noise and vibration inside train cars.

The present invention has been made in view of the above problems, and its object is to provide a seat provided on a floating floor so that the direction can be changed, which is highly practical and harmonious regardless of the direction of the seat. To provide an air conditioner for a seat capable of blowing air from a seat, and to prepare an air-conditioned environment in a vehicle.

(Mode of Invention)
The following aspects of the invention are illustrative of aspects of the invention, and are described in sections to facilitate understanding of the various components of the invention. The following items do not limit the technical scope of the present invention, and while considering the best mode for carrying out the present invention, some of the components of each item are replaced, deleted, or further An aspect in which other components are added can also be an aspect of the present invention.

(1) A seat air conditioner for supplying conditioned air to a seat of a railway vehicle, wherein the seat is provided on the floor of the railway vehicle so that the direction can be changed, and is connected to an underfloor duct arranged under the floor, A first duct provided on the floor side so as to be coaxial with the direction change axis of the seat, and a second duct provided on the seat side so as to be coaxial with the direction change axis of the seat. , an in-seat duct that is connected to the second duct and sends conditioned air to at least one of the seat surface of the seat and the front of the backrest; a tubular joint that connects the first duct and the second duct irrespective of changes in the positions of the seat surface of the seat and the underfloor duct in the forward or rearward direction of travel, the width direction or the height direction An air conditioner for a seat (Claim 1).

Since the first duct, the second duct and the tubular joint of the seat air conditioner according to this paragraph are positioned coaxially with the direction change axis of the seat, regardless of the direction of the seat, the first duct and the second duct 2. The duct and tubular joint communicate coaxially with the seat turning axis, i.e., regardless of the direction of the seat, the flow path of conditioned air from the underfloor duct to the seat is always in communication without interruption. will be maintained. Similarly, even if there is a change in the position of the seating surface of the seat and the underfloor duct in the front or rear, width or height direction of the rolling stock with respect to the floor surface, The flow path of the conditioned air from the duct to the seat is always kept in communication without being cut off.

(2) In the above item (1), the floor of the railway vehicle is a floating floor, the first duct is fixed to the underfloor duct, the second duct is fixed to the seat or the in-seat duct, and The seat air conditioner (claim 2), wherein the tubular joint is made of a deformable sheet-like member.

In the seat air conditioner according to this section, since the tubular joint is made of a deformable sheet -like member, Alternatively, even if the positions of the seat surface of the seat and the underfloor duct change in the height direction , the tubular joint is flexibly deformed, such as twisted, so as to correspond to the change. For this reason, regardless of the direction of the seat and the position of the seat surface and the underfloor duct in the front or rear, width or height direction of the rolling stock, with respect to the floor surface , the state of communication between the first duct and the second duct is maintained, and the function of the first duct, the second duct, and the tubular joint as a flow path for the conditioned air is maintained.

(3) In the item (2) above, the tubular joint has one end and the other end connected to the first duct and the second duct, respectively, and has a large diameter with respect to the end. A seat air conditioner (Claim 3).

In the seat air conditioner according to this section, the tubular joint includes one end portion and the other end portion connected to the first duct and the second duct, respectively, and an intermediate portion formed to have a large diameter with respect to these end portions. and a part. According to this configuration, the area of the sheet-like member used in the intermediate portion is larger than the area of the end portion, and the deformable range is also increased. Therefore, even if the position of the underfloor duct changes in the direction of travel of the railway vehicle, forward or backward, in the width direction or in the height direction with respect to the direction of the seat and the floating floor due to the direction change of the seat , the intermediate part will be more stable. By being flexibly twisted, the function of the first duct, the second duct and the tubular joint as a pipeline can be more reliably maintained while coping with the change in the positional relationship described above. Furthermore, since the intermediate portion is formed to have a large diameter, even if the intermediate portion is twisted, the reduction of the flow passage area can be suppressed, and the flow passage for the conditioned air can be secured.

(4) In the above item (3), the tubular joint has, on its surface or inside, a biasing member that biases the intermediate portion radially outward (claim 4).

In the seat air conditioner according to this section, the tubular joint has a biasing member on its surface or inside that biases the intermediate portion radially outward. According to this configuration, even if the tubular joint is deformed due to the direction change of the seat, the biasing member biases the intermediate portion of the tubular joint radially outwardly of the tubular joint. This suppresses the reduction of the flow passage area due to the deformation of the throttle, and more reliably secures the flow passage of the conditioned air.

(5) In the above item (4), the biasing members are elastically deformable linear or elastically deformable members arranged at equal intervals in the circumferential direction of the tubular joint from the end portion to the intermediate portion. An air conditioner for a seat, which is a band-shaped member (claim 5).

In the seat air conditioner according to this paragraph, elastically deformable linear or belt-shaped members arranged in a manner extending from the end to the middle portion of the tubular joint at equal intervals in the circumferential direction as the biasing member. be. According to this configuration, even if the tubular joint is deformed, the intermediate portion is urged diametrically outward by the linear or band-shaped members arranged at equal intervals in the circumferential direction of the tubular joint. (4) The effect of the term is obtained.
In addition, since the linear or belt-like member is elastically deformable, when the intermediate portion returns from the twisted state to the original state, the intermediate portion is urged outward in the diameter direction of the tubular joint, thereby twisting the twisted portion. It will encourage you to return to the state before the break. As a result, regardless of the change in the position of the underfloor duct in the direction of the seat and the floating floor , in the direction of travel of the railway vehicle, forward or backward, in the width direction or in the height direction, the flow path of the conditioned air of the tubular joint function as is more maintained.

(6) In item (1) above, the floor of the railway vehicle is a floating floor, the first duct is fixed to the underfloor duct, and the second duct is rotatably connected to the in-seat duct. , the tubular joint includes one end and the other end respectively connected to the first duct and the second duct, the position of the floating floor and the underfloor duct, and the seating surface of the seat and the floor surface of the floating floor. and a sealing member disposed between the first duct and the seat and rotatably supporting the second duct and the in-seat duct. A seat air conditioner (Claim 6).

According to the seat air conditioner according to this section, when the seat changes direction, the seal member rotates to ensure the airtightness of the flow path of the conditioned air, and the tubular shape connected to the first duct While preventing deformation of the joint in the torsional direction, the first duct, the second duct, and the tubular joint are kept in communication with each other. In addition, even if the positions of the seating surface of the seat and the underfloor duct change in the direction of travel of the railway vehicle, forward or backward, in the width direction or in the height direction with respect to the floating floor , the intermediate portion of the tubular joint will follow the change. The first duct and the second duct are maintained in a connected state by absorbing such a change in position by elastically deforming.

(7) In the above item (6), the seat air conditioner (claim 7), wherein the intermediate portion has a bellows shape.

In the air conditioner for seats according to this section, the intermediate part has a bellows shape, so that the direction of the seat can be changed by changing the direction of the seat , the floating floor, the direction of travel of the railway vehicle, the front or rear, the width direction Even if the positions of the seat surface and the underfloor duct change in the height direction , by flexibly deforming according to the change, the function as a flow path for conditioned air is maintained while absorbing such position change. shall be maintained.

INDUSTRIAL APPLICABILITY With the above configuration, the present invention is highly practical in the seat provided on the floating floor so that the direction can be changed, and the conditioned air can be blown out from the seat regardless of the direction of the seat, It is possible to adjust the air-conditioned environment in the vehicle.

1 is a view showing a convertible seat provided with a seat air conditioner according to a first embodiment of the present invention, and showing a state in which the seat faces forward in the traveling direction of the railroad vehicle. FIG. FIG. 2 is a plan view of a main part of a convertible seat provided with the seat air conditioner shown in FIG. 1; FIG. 2 is a diagram showing a state in which the convertible seat provided with the seat air conditioner shown in FIG. 1 is turned 90 degrees; FIG. 4 is a plan view of a main part of a convertible seat provided with the seat air conditioner shown in FIG. 3; The tubular joint of the seat air conditioner shown in FIG. 1, (a) is a plan view of the tubular joint, and (b) is a partial cross-sectional view of the tubular joint along line AA shown in FIG. 5 (a). be. It is an expanded sectional view in the B section shown in FIG.5(b). FIG. 2 is a diagram schematically showing the flow of conditioned air in a convertible seat provided with the seat air conditioner shown in FIG. 1; FIG. 10 is a cross-sectional view of a main part of a convertible seat provided with a seat air conditioner according to a second embodiment of the present invention; FIG. 9 is a cross-sectional view of a main part of a convertible seat provided with the seat air conditioner shown in FIG. 8 as viewed from the side; FIG. 11 is a cross-sectional view of a main part of a convertible seat provided with a seat air conditioner according to a third embodiment of the present invention; FIG. 11 is a cross-sectional view of a main part of a convertible seat provided with the seat air conditioner shown in FIG. 10 as viewed from the side;

The configuration of the seat air conditioner according to the first embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6. FIG. Here, in the following description, a seat air conditioner provided in a seat arranged on a floating floor of a railway vehicle will be described.

First, the configuration of the seat 21 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4 and 7. FIG.
As shown in FIGS. 1 to 4, the seat 21 includes a cushion 23, a backrest 25, an armrest 27, and a direction change device 29 (see FIGS. 1, 3 and 7). It is supported by the seat base 33 so that the direction can be changed. This seat platform 33 is provided on a floating floor 39 of the railway vehicle. In addition, the seat 21 has an in-seat duct 37 that sends conditioned air to the seat surface of the cushion 23 and the front of the backrest 25 (see FIG. 7, in which three seats 21 are shown in parallel. ) is provided. The seat 21 is unlocked from the seat pedestal 33 by operating a lever 35 provided on the seat pedestal 33, so that the direction can be changed.

Referring to FIG. 1, a seat air conditioner 1A includes a floating-floor-side duct 3 (first duct), a seat-side duct 5 (second duct), and a tubular structure connecting the floating-floor-side duct 3 and the seat-side duct 5. and a joint 7A. The floating-floor-side duct 3 has a tubular shape and is fixed to an under-floor duct 41 (under-floor duct) arranged under the floating floor 39 so as to be substantially coaxial with the direction change axis C of the seat 21 . Between the floating floor side duct 3 and the floating floor 39, a gap member 19 such as Eptosila, CR sponge, or the like is provided. The under-floating floor duct 41 is fixed to the vehicle body 2 of the railway vehicle. The seat-side duct 5 has a tubular shape and is fixed to the seat 21 so as to be substantially coaxial with the direction change axis C of the seat 21 . Also, the seat-side duct 5 communicates with the seat-inside duct 37 of the seat 21 (see FIG. 7). As shown in FIG. 5, the tubular joint 7A is made of a deformable sheet-like member 8 and has end portions 9, 9 and an intermediate portion 11A. The deformable sheet-like member 8 is a cloth member (eg, ripstop nylon fabric) made of a gas-impermeable and heat-insulating material (eg, blended fiber of cotton, nylon, and polyester). One end and the other end 9, 9 of the tubular joint 7A are connected to the floating floor side duct 3 and the seat side duct 5, respectively, and are tightly fixed to the floating floor side duct 3 and the seat side duct 5 by bands 13, 13. . The one and the other end portions 9, 9 are easy to work when connecting the floating floor side duct 3 and the seat side duct 5 so as to cover the outer peripheral portions of the floating floor side duct 3 and the floating floor side duct 3 in a fixed state by the bands 13, 13. and the outer peripheral portion of the seat-side duct 5 is given an appropriate diameter that does not cause air leakage. The intermediate portion 11A has an outer diameter larger than the outer diameters of the one and the other end portions 9, 9 (see FIGS. 1, 5B, etc.). The tubular joint 7A is internally provided with a biasing member 15 that biases the intermediate portion 11A radially outwardly of the tubular joint 7A (see FIGS. 5 and 6). The biasing member 15 is formed of a material such as nylon or polypropylene having flexibility and resilience (repulsive force), and is a linear member such as an elastically deformable piano wire, wire, or cable tie. They are arranged at equal intervals in the circumferential direction of the joint 7A from one end 9 to the other end 9 (see FIG. 5(b)). In the example shown in the figure, the tubular joint 7A is provided over the entire length, and the intermediate portion 11A is stretched in a simple convex shape from the connecting portion with the one and the other end portions 9, 9 toward the central portion in the longitudinal direction. However, it is not limited to this. It may protrude, or may protrude in a trapezoidal shape. Furthermore, it may be formed in a bellows shape with ridges extending in the longitudinal direction.

Next, the state of the tubular joint 7A of the seat air conditioner 1A according to the first embodiment according to the direction change position of the seat 21 will be described below with reference to FIGS. 1 to 4. FIG.
When the seat 21 faces forward in the traveling direction of the railway vehicle, the tubular joint 7A is connected to the floating floor side duct 3 and the seat side duct 5 in a state in which the intermediate portion 11A is deformed, that is, twisted. (See FIGS. 1 and 2). At this time, the biasing member 15 provided on the inner surface of the sheet-like member 8 biases the intermediate portion 11A radially outwardly of the tubular joint 7A. is suppressed, and a flow path for conditioned air is secured. Therefore, the conditioned air can be sent to the cushion 23 and the backrest 25 of the seat 21 (see arrows in FIG. 7).

On the other hand, when the lever 35 of the seat base 33 is operated to change the direction of the seat 21, the seat-side duct 5 also rotates as the seat 21 rotates about the direction change axis C. Due to this rotation, the intermediate portion 11A of the tubular joint 7A tries to return from the twisted state to the original state (that is, the state before being twisted) (in FIGS. 3 and 4, the seat 21 is turned 90 degrees). It shows the state in the middle of the turning operation). At this time, the urging member 15 urges the intermediate portion 11A radially outwardly of the tubular joint 7A by its elastic restoring force to urge it to return to the state before being twisted. Then, when the seat 21 turns 90 degrees, the outer diameter of the intermediate portion 11A becomes maximum.

When the seat 21 is turned 180 degrees from the state shown in FIG. It has a shape (not shown) that is twisted in the opposite direction to the traveling direction of the railroad vehicle. At this time, even if the intermediate portion 7A is twisted in the opposite direction, the elastically deformable urging member 15 urges the intermediate portion 11A, suppressing the reduction of the passage area due to the contraction deformation of the intermediate portion 11A. A flow path for conditioned air is secured. Thus, even if the direction of the seat 21 is changed, regardless of the direction of the seat 21, the flow path of the conditioned air from the underfloor duct 41 to the seat 21 is always kept in communication.

That is, when the seat 21 is at an intermediate angle of 90° between the rotation angles of 180° when the seat 21 is turned forward or backward in the traveling direction of the railroad vehicle, the tubular joint 7A is not twisted and the intermediate portion The tubular joint 7A is connected to the floating floor side duct 3 and the seat side duct 5 so that the outer diameter of 11A is maximized. The intermediate portion 11A has the maximum throttle amount at the end positions (0° and 180°) of the rotation range of the seat 21, and has a pipe diameter that does not hinder the circulation of the conditioned air even in this state. Appropriate diameter is provided for maintenance.

In addition, at any angle of the turning operation of the seat 21 with a rotation angle of 180°, the floating floor side duct 3 and the seat side duct 5 are maintained connected via the tubular joint 7A, and serve as a flow path for the conditioned air. function is maintained. Further, the tubular joint 7A has a positional relationship between the seat surface of the seat 21 and the floor surface of the floating floor 39, and a positional relationship between the floating floor 39 and the under-floating duct 41 (with respect to the floor surface of the floating floor 39, forward in the traveling direction of the railway vehicle). or the position of the seat surface of the seat 21 and the underfloor duct 41 in the rear, width direction, or height direction) , the floating floor side duct 3 and the seat side duct 5 are deformed according to the change. are maintained connected via the tubular joint 7A, and also maintain the function as a flow path for the conditioned air.

As described above, according to the seat air conditioner 1A of the first embodiment having the above configuration, the following effects can be obtained.
Since the floating floor-side duct 3, the seat-side duct 5, and the tubular joint 7A are coaxial with the direction change axis C of the seat 21, regardless of the direction of the seat 21, the floating floor-side duct 3, the seat-side duct 5, and the tubular joint 7A are aligned. The tubular joint 7A communicates coaxially with the direction change axis C of the seat 21, that is, the flow path of the conditioned air from the duct 41 under the floating floor to the seat 21 can always be maintained in communication without being cut off. becomes. Similarly, even if the positional relationship between the seat surface of the seat 21 and the floor surface of the floating floor 39 and the positional relationship between the floating floor 39 and the under-floating duct 41 change, The flow path of conditioned air leading to it can always be maintained in a communicating state without being cut off.

Further, in the seat air conditioner 1A, since the tubular joint 7A is composed of the deformable sheet-like member 8, the direction of the seat 21, the positional relationship between the seat surface of the seat 21 and the floor surface of the floating floor 39, and the Even if the positional relationship between the floating floor 39 and the under-floating duct 41 changes, the tubular joint 7A is flexibly deformed, such as twisted, so as to correspond to the change. As a result, regardless of the direction of the seat 21, the positional relationship between the seat surface of the seat 21 and the floor surface of the floating floor 39, and the positional relationship between the floating floor 39 and the under-floating duct 41, the floating floor-side duct 3 and the seat-side duct 5 , and the function of the floating floor side duct 3, the seat side duct 5, and the tubular joint 7A as a channel for conditioned air can be maintained.

Furthermore, in the seat air conditioner 1A, since the area of the sheet-like member 8 used in the intermediate portion 11A of the tubular joint 7A is larger than the areas of the end portions 9, 9, the deformable range is also increased. As a result, even if the direction of the seat 21, the positional relationship between the seat surface of the seat 21 and the floor surface of the floating floor 39, and the positional relationship between the floating floor 39 and the under-floating duct 41 change due to the direction change of the seat 21, the intermediate portion 11A can be are more flexibly twisted, the floating floor side duct 3, the seat side duct 5, and the tubular joint 7A can more reliably maintain their function as a pipeline while coping with the change in the positional relationship described above. Furthermore, since the intermediate portion 11A is formed to have a large diameter, even if the intermediate portion 11A is twisted, it is possible to suppress the reduction of the flow passage area and secure the flow passage for the conditioned air.

In the seat air conditioner 1A, even if the tubular joint 7A is deformed due to the direction change of the seat 21, the biasing member 15, which is a linear member that can be elastically deformed, causes the intermediate portion 11A to move outward in the diameter direction of the tubular joint 7A. Therefore, it is possible to suppress the reduction of the flow passage area due to the constriction deformation of the intermediate portion 11A accompanying the deformation of the tubular joint 7A, and to more reliably secure the flow passage of the conditioned air. Furthermore, when the intermediate portion 11A returns from the twisted state to the original state, the intermediate portion 11A can be biased outward in the diameter direction of the tubular joint 7A to return to the state before being twisted. becomes.

Next, a seat air conditioner 1B according to a second embodiment of the present invention will be described with reference to FIGS. 8 and 9. FIG. In the following description, the same reference numerals are used for the same parts as in the seat air conditioner 1A of the first embodiment, and only the different parts will be described in detail.

As shown in FIGS. 8 and 9, in the seat air conditioner 1B of the second embodiment, a floating-floor-side duct 3 (first duct), a seat-side duct 5 (second duct), and a floating-floor-side duct 3 It includes a tubular joint 7B that connects with the seat-side duct 5, a seal bearing 17 (seal member), and a holding portion 43 that holds the seal bearing 17. The tubular joint 7B includes one end 9, 9 connected to the floating floor side duct 3 and the seat side duct 5, respectively, and an intermediate portion 11B. The intermediate portion 11B is made of a material such as chloroprene rubber, and has a bellows shape that can be elastically deformed to follow changes in the positions of the floating floor 39 and the under-floor duct 41 . The seal bearing 17 is arranged between the first holding portion 43A (see below) and the second holding portion 43B (see below), and rotatably supports the second holding portion 43B with respect to the first holding portion 43A. ing. The holding part 43 is fixed to a first holding part 43A fixed to the upper part of the seat platform 33 and to the lower part of the seat duct 37 of the seat 21 so as to be substantially coaxial with the direction change axis C of the seat 21. and a second holding portion 43B.

Next, the state of the tubular joint 7B of the seat air conditioner 1B according to the second embodiment at the direction change position of the seat 21 will be described below with reference to FIGS. 8 and 9. FIG.
When the lever 35 of the seat base 33 is operated to change the direction of the seat 21, the seal bearing 17 of the seat air conditioner 1B rotates while ensuring the airtightness of the flow path of the conditioned air. Only the seat 21 to which the holding portion 43B is fixed rotates, and rotation of the seat-side duct 5 is prevented. Therefore, the tubular joint 7B connected to the seat-side duct 5 also does not rotate. At this time, the seat 21 changes direction while maintaining the center of direction change (direction change axis C) by the seal bearing 17 . As a result, the flow paths of the floating floor side duct 3, the seat side duct 5, the tubular joint 7B, and the second holding portion 43B are kept in communication while preventing deformation of the tubular joint 7B in the torsional direction. Further, even if the positions of the floating floor 39 and the under-floating duct 41 change as the seat 21 changes direction, the bellows-shaped intermediate portion 11B of the tubular joint 7B elastically deforms following the change. A change in position is absorbed, and the flow paths of the floating floor side duct 3, the seat side duct 5 and the tubular joint 7B are maintained in a state of communication.

According to the seat air conditioner 1B according to the second embodiment having the above configuration, it is possible to obtain the following effects.
When the seat 21 changes direction, the rotation of the seal bearing 17 prevents deformation in the torsional direction of the tubular joint 7B connected to the seat-side duct 5 while ensuring the airtightness of the flow path of the conditioned air. At the same time, it is possible to maintain the flow paths of the floating floor side duct 3, the seat side duct 5, the tubular joint 7B, and the second holding portion 43B in a state of communication. In addition, the position of the seat surface of the seat 21 and the floor surface of the floating floor 39 and the position of the floating floor 39 and the duct 41 below the floating floor (with respect to the floor surface of the floating floor 39, the front or rear of the railroad vehicle in the traveling direction of the railroad vehicle, the width Even if the seat surface of the seat 21 and the position of the underfloor duct 41 in the direction or height direction) change, the bellows-shaped intermediate portion 11B of the tubular joint 7B flexibly responds, that is, follows the change. It is possible to absorb such a change in position by elastically deforming with force, and to maintain the function as a flow path for conditioned air.

Next, a seat air conditioner 1C according to a third embodiment of the present invention will be described with reference to FIGS. 10 and 11. FIG. In the following description, the same reference numerals are used for the same parts as in the seat air conditioner 1B of the second embodiment, and only the different parts will be described in detail.

As shown in FIGS. 10 and 11, the seat 21 according to the third embodiment includes a cushion 23, a backrest 25, an armrest (not shown), and a direction changing device 51. It is supported on the seat base 33 so as to be convertible. The direction change device 51 includes a holding mechanism 53 such as a thrust bearing for maintaining the center of direction change (direction change axis C) when the seat 21 changes direction. The seat duct 23 provided in the cushion 23 of the seat 21 is provided with a holding portion 47 (see below) for holding a seal ring 45 (seal member, see below) of the seat air conditioner 1C. ing.
The seat air conditioner 1C includes a floating-floor-side duct 3 (first duct), a seat-side duct 5 (second duct), a tubular joint 7B connecting the floating-floor-side duct 3 and the seat-side duct 5, and a seal ring 45. and The seal ring 45 is arranged at the connecting portion between the holding portion 47 of the cushion 23 and the seat-side duct 5 and is slidably rotatable with respect to the seat-side duct 5 . The holding part 47 has a bottomed cylindrical shape and is fixed to the lower part of the seat duct 37 of the seat 21 so as to be substantially coaxial with the direction change axis C of the seat 21 . An opening 49 through which the seat-side duct 5 is inserted is formed at the bottom of the holding portion 47 .

Next, the state of the tubular joint 7B of the seat air conditioner 1C according to the third embodiment at the direction change position of the seat 21 will be described below with reference to FIGS. 10 and 11. FIG.
When the direction of the seat 21 is changed by operating the lever 35 of the seat base 33, the seal ring 45 of the seat air conditioner 1C secures sealing of the flow path of the conditioned air and seals against the seat-side duct 5. Rotation of the seat-side duct 5 is prevented by sliding and rotating. Therefore, the tubular joint 7B connected to the seat-side duct 5 also does not rotate. At this time, the seat 21 changes direction while maintaining the center of direction change by the holding mechanism 53 of the direction changing device 51 . As a result, the flow paths of the floating floor side duct 3, the seat side duct 5, and the tubular joint 7B are maintained in a communicating state while preventing deformation of the tubular joint 7B in the torsional direction. Further, even if the positions of the floating floor 39 and the under-floating duct 41 change as the seat 21 changes direction, the bellows-shaped intermediate portion 11B of the tubular joint 7B elastically deforms following the change. The change in position is absorbed, and the flow paths of the floating floor side duct 3, the seat side duct 5 and the tubular joint 7B are maintained in a state of communication.

According to the seat air conditioner 1C according to the third embodiment having the above configuration, it is possible to obtain the following effects.
When the seat 21 changes direction, the seal ring 45 slides and rotates with respect to the seat-side duct 5 while ensuring the airtightness of the flow path of the conditioned air, thereby forming a tubular joint connected to the seat-side duct 5. Since the rotation of 7B is blocked, the same effects as those of the seat air conditioner 1B according to the second embodiment can be obtained.

In the seat air conditioner 1A according to the first embodiment, an elastically deformable linear member is provided on the inner surface of the sheet-like member 8 of the tubular joint 7A. It may be another member such as. Furthermore, the elastically deformable linear member may be the outer surface of the sheet-like member 8 of the tubular joint 7A, both surfaces of the sheet-like member 8, or the sheet-like member 8 if the flow path of the tubular joint 7A can be secured. may be provided on a portion of the inner or outer surface of the

In the seat air conditioner 1B according to the second embodiment, the seal bearing 17 is arranged between the first holding portion 43A and the second holding portion 43B. It is fixed to the seat 21 so as to be substantially coaxial with the direction change axis C of the direction change device 51 according to the third embodiment, and when the seat 21 changes direction, the center of direction change (direction change axis C) If it is possible to keep the A bearing 17 may be arranged to rotatably support one or the other end 9, 9 with respect to the floating floor side duct 3 or the seat side duct 5.

Furthermore, the seat air conditioners 1A, 1B, and 1C according to the first, second, and third embodiments are used in the seat 21 provided on the floating floor 39 so as to be able to change direction, but the fixed floor structure, the divided It may also be applied to seats provided on other floor structures such as floor structures or suspended floor structures. Further, the seat air conditioners 1A, 1B, and 1C according to the first, second, and third embodiments have a structure in which the positional relationship between the seat surface of the seat 21 and the floor surface of the floor changes. In order to secure a rotatable range of the seat 21 when changing direction, the seat 21 is displaced from the center of the direction changing axis C while the seat 21 is rotating, and the seat 21 is rotated eccentrically. In a seat that can be rearranged between a seat (cross seat) and a seat (long seat) that is placed parallel to the rail, the seat rotation center position can be changed when the seat is a cross seat or when it is a long seat, etc. However, it may also be applied to other structures in which the positional relationship between the seat and the duct changes.

DESCRIPTION OF SYMBOLS 1A, 1B, 1C... Air conditioner for seats, 3... Float-side duct (first duct), 5... Seat-side duct (second duct), 7... Tubular joint, 21... Seat, 23... Cushion (seating surface) , 25... Saddle, 39... Floating floor, 41... Under-floor duct (under-floor duct), C... Direction change shaft

Claims (7)

A seat air conditioner for sending conditioned air to a seat of a railway vehicle,
The seat is provided on the floor of the railcar so that the direction can be changed, is connected to an underfloor duct arranged under the floor, and is provided on the floor side so as to be coaxial with the direction change axis of the seat. 1 duct, a second duct provided on the side of the seat so as to be coaxial with the direction changing axis of the seat, and at least one of the seat surface and the backrest of the seat connected to the second duct A duct in the seat that sends conditioned air to the direction of the seat, and the seat surface of the seat in the direction of travel of the railway vehicle, forward or rearward, in the width direction or in the height direction with respect to the floor surface of the floor. A seat air conditioner comprising a tubular joint that connects the first duct and the second duct regardless of changes in the position of the underfloor duct . The floor of the railway vehicle is a floating floor, the first duct is fixed to the underfloor duct, the second duct is fixed to the seat or the in-seat duct,
2. A seat air conditioner according to claim 1, wherein said tubular joint comprises a deformable sheet-like member. The tubular joint is characterized by comprising one end and the other end connected to the first duct and the second duct, respectively, and an intermediate portion having a large diameter with respect to the end. The seat air conditioner according to claim 2. 4. The seat air conditioner according to claim 3, wherein the tubular joint includes a biasing member on or inside thereof for biasing the intermediate portion radially outward. The urging member is an elastically deformable linear or belt-shaped member arranged at equal intervals in the circumferential direction of the tubular joint from the end portion to the intermediate portion. Item 5. The seat air conditioner according to item 4. The floor of the railway vehicle is a floating floor, the first duct is fixed to the underfloor duct, and the second duct is rotatably connected to the in-seat duct,
The tubular joint has one end and the other end respectively connected to the first duct and the second duct, the positions of the floating floor and the underfloor duct, and the seating surface of the seat and the floor surface of the floating floor. and a sealing member disposed between the first duct and the seat for rotatably supporting the second duct and the in-seat duct. A seat air conditioner according to claim 1, characterized by comprising: 7. A seat air conditioner according to claim 6, wherein said intermediate portion has a bellows shape.

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