Carts and cargo transport structures

Abstract

To increase the amount of loads that can be transported when using a passenger train to transport the loads and enable loading of the loads to be done in a shorter period of time.SOLUTION: A load transportation structure 10 transports a load 18 by using a seat device 1 installed in a passenger room of a passenger train and an exclusively provided truck 8. In the load transportation structure 10, a backrest 3 and a table arm of the seat device 1 are folded forward in a horizontal state, a base plate 80 of the truck 8 is positioned in a space generated over the backrest 3, the table arm, and a table, and the load 18 placed on the base plate 80 is transported to a destination station together with the truck 8. Further, the truck 8 includes a rotation body 93 and a raising / lowering body 97 to regulate the movement of the truck 8.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a bogie to be loaded on a passenger train on which a seat device is installed, and a luggage transport structure using the seat device and the bogie. [Background technology]

[0002] Recently, as passenger demand has declined due to the effects of the COVID-19 pandemic, demand for luggage transportation has increased. In response to this, railway companies have begun using seats on Shinkansen and limited express trains to transport luggage. Note that seats installed on Shinkansen and limited express trains generally have a seat and a reclining backrest (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-225842 Summary of the Invention [Problem to be solved by the invention]

[0004] As mentioned above, when transporting luggage using seats on Shinkansen or limited express trains, the luggage is currently placed on the seats, which limits the amount of luggage that can be transported, leaving room for improvement. Also, when the luggage is placed on a cart and transported to the platform or inside the car, it takes time to transfer the luggage from the cart to the seats, leaving room for improvement.

[0005] Therefore, an object of the present invention is to increase the amount of luggage that can be transported when transporting luggage using passenger trains and to enable luggage to be loaded in a short time. [Means for solving the problem]

[0006] The present invention is a bogie to be loaded onto a passenger train equipped with seat devices, comprising a base plate positioned in the space created above the backrest of the seat device when the backrest is folded forward, a plurality of legs hanging down from the base plate, and wheels attached to the lower end of each leg, wherein a space can be formed between the legs that does not interfere with the seat device when the bogie is slid from the aisle of the passenger train toward the seat device with the wheels in contact with the floor.

[0007] The present invention is a luggage transport structure using a seat device installed on a passenger train and the above-mentioned bogie, wherein the seat device has a seat portion and a backrest that can be folded forward, the base plate is positioned in the space created above the backrest when folded forward, and luggage placed on the base plate is transported together with the bogie. [Effects of the Invention]

[0008] According to the present invention, by folding the backrest of the seat device forward and using the space above it to transport luggage together with the cart, it is possible to increase the amount of luggage that can be transported and also to load luggage in a short time. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of a seating device used in the luggage transport structure of the present invention; [Figure 2] 2 is a diagram showing a state in which the main body of the backrest in FIG. 1 has been slid upward. [Figure 3] 3 is a diagram showing the state in which the backrest of FIG. 2 is folded horizontally toward the front. [Figure 4] 4 is a diagram showing a state in which the stopper of the table arm in FIG. 3 is released. FIG. [Figure 5] 5 is a diagram showing a state in which the table arm of FIG. 4 is folded horizontally toward the front. [Figure 6] FIG. 2 is a diagram showing the main part of the backrest in the state shown in FIG. 1. [Figure 7]FIG. 3 is a diagram showing the main part of the backrest in the state shown in FIG. 2. [Figure 8] FIG. 4 is a diagram showing the main part of the backrest in the state shown in FIG. 3. [Figure 9] FIG. 4 is a diagram showing the table and table arm in the state shown in FIG. 3. [Figure 10] FIG. 5 is a diagram showing the table and table arm in the state shown in FIG. 4. [Figure 11] FIG. 6 is a diagram showing the table and table arm in the state shown in FIG. 5. [Figure 12] 6 is a diagram showing a state in which the base plate of the first bogie is positioned in the space created above the backrest of the left seat in FIG. 5. FIG. [Figure 13] FIG. 13 is a diagram showing a state in which the first carriage in FIG. 12 is connected to the left seat. [Figure 14] 14 is a diagram showing the state in which the base plate of the second bogie is positioned in the space created above the backrest of the right seat in FIG. 13. FIG. [Figure 15] FIG. 15 shows the second carriage of FIG. 14 coupled to the right seat. [Figure 16] 15 is a view of the seat device and the second carriage in the state shown in FIG. 14 as seen from the aisle side. [Figure 17] 17 is a diagram showing a state in which the rotating body and the backrest of FIG. 16 are engaged with each other. FIG. [Figure 18] 18 is a diagram showing the state in which the lifting body of FIG. 17 is inserted between the table and the armrest. FIG. [Figure 19] FIG. 19 is a cross-sectional view taken along line AA in FIG. 18.

[0010] A "cart" and "luggage transport structure" according to one embodiment of the present invention will be described with reference to Figures 1 to 19. The luggage transport structure 10 of the present invention uses a seat device 1 installed in a passenger compartment of a passenger train and a dedicated cart 8.

[0011] As shown in Figures 1 to 5, the seat device 1 includes an underframe 13 attached via a base frame 12 to a base 11 fixed to the floor of a passenger train passenger compartment, a support 14 fixed to the underframe 13, and two seats supported by these. That is, the seat device 1 in this example is a two-seater type with two seats lined up in the left-right direction. A pedal is attached to the base 11, and the seat orientation can be changed by 180 degrees by stepping on the pedal. In this example, three support parts 14 are used, and they are fixed to both the left and right ends and the center of the underframe 13. Each support part 14 is provided with an armrest 4. Each seat is positioned between the three support parts 14. Each seat includes a seat 2, a backrest 3 that can recline relative to the seat 2, a table 5 located behind the backrest 3, and a table arm 6 that supports the table 5.

[0012] In this specification, the terms "left," "right," "front," "rear," "upper," and "lower" refer to directions as seen from the perspective of a person sitting in the seating device 1. Therefore, the "left-right direction" coincides with the width direction of the seat portion 2 and the backrest 3.

[0013] The seat portion 2 includes a seat frame arranged on the underframe 13 and a cushion body 21 arranged on the seat frame. The cushion body 21 is fixed to the seat frame via a hook-and-loop fastener or the like.

[0014] 2 and 3, the backrest 3 includes a base 7 rotatably supported on a support 14 via a reclining shaft, and a main body 32 that is detachable from the base 7. The reclining shaft serves as the center of rotation when the backrest 3 is reclined.

[0015] As shown in Figure 6, the base 7 includes a pair of left and right arm portions 71, connecting portions 72 rotatably connected to each arm portion 71 via connecting shafts 73, and a beam portion 79 spanning the pair of arm portions 71 and connecting the pair of arm portions 71.

[0016] A hole 74 is formed in the center of the arm portion 71, to which the reclining shaft is attached. One end of the arm portion 71 is connected to a connecting portion 72 via a connecting shaft 73. The other end of the arm portion 71 is formed with a hole 76 for connecting a seat lock. The seat lock (gas spring with a locking mechanism) is a member that holds the backrest 3 at a desired tilt angle.

[0017] The connecting portion 72 is formed in a rod shape. The reclining shaft and the connecting shaft 73 are arranged parallel to each other. A ball plunger 75 is built into the connecting portion 72. This ball plunger 75 is a member that fixes the tubular portion 33, which will be described later.

[0018] The main body 32 comprises a pair of left and right tubular sections 33 that extend vertically when the backrest 3 is in an upright position, a plate section 35 connecting the upper ends of the pair of tubular sections 33, a plate section 34 connecting the middle sections of the pair of tubular sections 33, a cushion body placed in front of the plate sections 34 and 35, and a cloth cover that covers these.

[0019] As shown in Fig. 6, the tubular portion 33 is formed in the shape of a hollow square tube and opens downward. The tubular portion 33 is attached to the connecting portion 72 so as to be slidable between a first position (see Fig. 6) in which the connecting portion 72, the connecting shaft 73, and a portion of the arm portion 71 are housed, and a second position (see Fig. 7) in which the connecting shaft 73 and the arm portion 71 are exposed. When the tubular portion 33 is in the first position, the connecting portion 72 cannot rotate, and when the tubular portion 33 is in the second position, the connecting portion 72 can rotate. When a passenger is seated, the tubular portion 33 is positioned in the first position.

[0020] The cylindrical portion 33 is formed with a first hole 33a into which the ball of the ball plunger 75 fits when the ball is in the first position, and a second hole 33b into which the ball of the ball plunger 75 fits when the ball is in the second position. The ball of the ball plunger 75 fits into the first hole 33a, thereby maintaining the cylindrical portion 33 in the first position. The ball of the ball plunger 75 fits into the second hole 33b, thereby maintaining the cylindrical portion 33 in the second position. Note that the main body 32 can be separated from the base 7 by releasing the ball plunger 75 from the holes 33a and 33b and lifting the cylindrical portion 33 by about 15 cm.

[0021] The backrest 3 configured as described above can be folded forward horizontally. To fold it, proceed as follows: First, position the backrest 3 in an upright position as shown in FIGS. 1 and 6. At this time, the tubular portion 33 is positioned in the first position. Next, the ball plunger 75 is released from the first hole 33a, and the main body 32 is lifted to position the tubular portion 33 in the second position as shown in FIGS. 2 and 7, and the ball plunger 75 is engaged with the second hole 33b. Then, rotate the main body 32 forward around the connecting shaft 73, and fold the backrest 3 horizontally as shown in FIGS. 3 and 8. In the state shown in FIG. 3, the main body 32 is positioned lower than the armrests 4 and faces the seat 2.

[0022] The table 5 is used by passengers in the rear seats, and when not in use, is fixed to the back of the backrest 3 by a latch (not shown).

[0023] A pair of table arms 6 are provided on the left and right sides. These table arms 6 are rotatably supported on the support part 14 via the reclining shaft. Like the backrest 3, these table arms 6 are provided so that they can be folded forward into a horizontal position.

[0024] 9 to 11, the table arm 6 is divided into two parts: a first table arm 61 on the side away from the table 5, and a second table arm 62 connected to the table 5. A hole 64 to which the reclining shaft is attached is formed in the first table arm 61. That is, the reclining shaft is attached to the hole 74 in the arm portion 71 and the hole 64 in the first table arm 61. The second table arm 62 is rotatably connected to the first table arm 61 via a link member 63.

[0025] In addition, a stopper 65 that restricts the rotation of the second table arm 62 is attached to the second table arm 62. In the state shown in FIG. 9, the first table arm 61 and the second table arm 62 are aligned in a straight line, and the stopper 65 is engaged with the first table arm 61, restricting the rotation of the second table arm 62. In other words, the second table arm 62 is fixed to the first table arm 61. As shown in FIG. 10, by releasing the engagement of the stopper 65 with the first table arm 61, the second table arm 62 becomes rotatable relative to the first table arm 61. By allowing the second table arm 62 to rotate, the table arm 62 can be folded forward and horizontally, as shown in FIG. 11.

[0026] When folding the table arm 6 configured as above, first fold the backrest 3 as shown in Figure 3, and then release the stopper 65 from locking the first table arm 61 as shown in Figures 4 and 10. Then, rotate the second table arm 62 forward around the link member 63 as the center of rotation, and fold the table arm 6 to a horizontal position as shown in Figures 5 and 11. In the state shown in Figure 5, the first table arm 61 and the second table arm 62 are located lower than the armrest 4, and the table 5 is located near the armrest 4 and parallel to the backrest 3.

[0027] As shown in Fig. 12, the bogie 8 is loaded into the passenger compartment of a passenger train and transported together with baggage 18. The bogie 8 includes a base plate 80 that is positioned in the space created above the backrest 3, table arm 6, and table 5 when the backrest 3 and table arm 6 are folded forward, four legs 82 hanging down from the four corners of the base plate 80, wheels 83 attached to the lower end of each leg 82, and a rotating body 93 and a lifting body 97 that restrict the movement of the bogie 8.

[0028] The base plate 80 is a rectangular plate having a longitudinal direction and a lateral direction. The base plate 80 is positioned in the space with its longitudinal direction aligned with the front-to-rear direction of the seating device 1. Handles 81 are attached to one and the other longitudinal ends of the base plate 80. The luggage 18 is placed on the base plate 80 and positioned in the space, and is transported together with the dolly 8 as is.

[0029] The two legs 82 at one end of the base plate 80 in the longitudinal direction are positioned rearward of the seating device 1 , and the two legs at the other end of the base plate 80 in the longitudinal direction are positioned frontward of the seating device 1 .

[0030] Three reinforcing parts 84, 85, and 86 extending in a rod shape in the short direction of the base plate 80 are bridged between two legs 82 at one end in the longitudinal direction of the base plate 80. The reinforcing part 84 connects the upper parts of the two legs 82, the reinforcing part 85 connects the middle parts of the two legs 82, and the reinforcing part 86 connects the lower parts of the two legs 82.

[0031] A pin 87 is attached to one of the two legs 82 at one longitudinal end of the base plate 80, and a rotatable metal fitting 88 is attached to the other. As shown in Fig. 15, these pins 87 and metal fittings 88 function as a latch when connecting multiple carts 8 together.

[0032] Similar to the one end side, three reinforcing parts 84, 85, 86 extending in rod shape in the short direction of the base plate 80 are bridged between the two legs 82 on the other longitudinal end side of the base plate 80. A pin 87 is attached to one of the legs 82, and a metal fitting 88 is attached to the other. Similar to the one end side, the pin 87 and the metal fitting 88 function as a latch when connecting multiple trolleys 8 together.

[0033] Between the leg 82 at one longitudinal end of the base plate 80 and the leg 82 at the other longitudinal end, there are no reinforcing portions 84, 85, 86 or the like described above. In other words, since this bogie 8 is designed to be slid from the aisle of a passenger train toward the seat device 1 with the wheels 83 in contact with the floor, a space is provided between the leg 82 at one end and the leg 82 at the other end so as to be able to be formed so as not to interfere with the seat device 1 during sliding movement. "A space is provided so as to be able to be formed" specifically means that a space is formed or not formed depending on the positions of the rotating body 93 and the lifting body 97.

[0034] All four wheels 83 are swivel casters with rotation stoppers. Because the cart 8 can be connected to the seat using the rotating body 93 and the lifting body 97, it is not necessary to use the rotation stoppers of the wheels 83 when connected to the seat, but the rotation stoppers of the wheels 83 can be used at other times to prevent the cart 8 from moving.

[0035] 12 and 16, the rotating body 93 includes a flat plate 90 rotatably attached to the reinforcing portion 85 via a pair of torque hinges 89, and a first rib 91 and a second rib 92 protruding from one surface of the flat plate 90. The central axis of rotation of the rotating body 93 is parallel to the short side direction of the base plate 80. The flat plate 90 is formed in the shape of a rectangular plate with the long side parallel to the short side direction of the base plate 80. The first rib 91 and the second rib 92 are parallel to each other and extend in the short side direction of the base plate 80.

[0036] 16 and 17, the rotating body 93 located at the rear of the seat device 1 rotates approximately 90 degrees forward from a state in which the flat plate 90 is vertical. By rotating in this manner, as shown in Fig. 19, the beam portion 79 of the backrest 3 engages between the first rib 91 and the second rib 92, and the flat plate 90 engages between the pair of arm portions 71. This restricts the movement of the carriage 8 in the front-rear direction and the left-right direction.

[0037] In this example, one rotating body 93 is provided at one longitudinal end of the base plate 80 and one at the other longitudinal end. As shown in Fig. 18, the rotating body 93 used when connecting the bogie 8 to the seat device 1 is the rotating body 93 located at the rear of the seat device 1, and the rotating body 93 located at the front is not used. This rotating body 93 located at the front is used when the seat device 1 is facing in the opposite direction.

[0038] The lifting body 97 is formed in the shape of a plate extending in the longitudinal direction of the base plate 80. Elongated holes 98 extending in the vertical direction are formed at both longitudinal ends of the lifting body 97. A hole 99 is formed in the center of the lifting body 97 for inserting a hand when operating the lifting body 97. In addition, pins 94 positioned within the elongated holes 98 are attached to the legs 82 on one longitudinal end side and the other longitudinal end side of the base plate 80.

[0039] The lifting body 97 can be raised and lowered between an upper position shown in Figures 14 and 16 and a lower position shown in Figures 15 and 18. The upper position is directly below the base plate 80 and is higher than the armrest 4. That is, the upper position is a position where the lifting body 97 does not interfere with the armrest 4 when the cart 8 is slid from the aisle toward the seat device 1. The lower position is a position where the lifting body 97 interferes with the armrest 4 when the cart 8 is slid from the aisle toward the seat device 1.

[0040] 17 and 18, such a lifting body 97 is lowered from an upper position to a lower position and inserted between the table 5 and the armrest 4. This restricts the left-right movement of the cart 8. As described above, the rotation body 93 alone can restrict the front-rear and left-right movement of the cart 8, but by using the lifting body 97 in addition, the left-right movement of the cart 8 can be restricted more strictly.

[0041] Furthermore, the carriage 8 of this example is provided with a hook-and-loop fastener 95 attached to the upper end surface of the lifting body 97 and a hook-and-loop fastener 96 attached to the underside of the base plate 80 as a means for maintaining the lifting body 97 in the upper position. The hook-and-loop fasteners 95, 96 stick together to maintain the lifting body 97 in the upper position. Magnetic catches can also be used instead of these hook-and-loop fasteners 95, 96.

[0042] In this example, one lifting body 97 is provided at one end of the base plate 80 in the short direction, and one at the other end. When connecting the carriage 8 to the seat device 1, both lifting bodies 97 may be inserted between the table 5 and the aisle-side armrest 4, and between the table 5 and the window-side armrest 4, respectively, or only one may be used. From the viewpoint of workability, it is preferable to use the aisle-side lifting body 97.

[0043] When the flat plates 90 of the pair of rotating bodies 93 of the cart 8 are in the vertical direction and the pair of lifting bodies 97 are in the upper position, a space is formed between the legs 82 at one end of the base plate 80 in the longitudinal direction and the legs 82 at the other end of the base plate 80 so that the cart 8 does not interfere with the seat device 1 when sliding. The width of the cart 8 is smaller than the width of each seat of the seat device 1. Therefore, the cart 8 connected to the seat of the seat device 1 by the rotating bodies 93 and the lifting bodies 97 does not protrude into the adjacent seat or the aisle.

[0044] An example of the operating procedure for the above-mentioned luggage transport structure 10 will be described. First, as shown in Fig. 5, the backrest 3 and table arm 6 of the seat device 1 to be used for luggage transport are folded in advance. In addition, in preparation for the carriage 8, the pair of rotating bodies 93 are positioned so that the flat plate 90 is in the vertical direction, and the pair of lifting bodies 97 are positioned in the upper positions.

[0045] Next, the baggage 18 is placed on the bed plate 80, and the bogie 8 is loaded into the passenger compartment of the passenger train. Inside the passenger compartment, the bogie 8 is advanced along the aisle with the longitudinal direction of the bed plate 80 aligned with the direction of travel of the train, and is stopped next to the target seat device 1. Then, as shown in FIG. 12, the bogie 8 is slid from the aisle toward the seat device 1. In the example shown in FIGS. 12 to 19, two bogies 8 are connected to the seat device 1 side by side, so the first bogie 8 is positioned across the left seat in FIG. 12 (the seat at the back as seen from the aisle). Then, the position of the bogie 8 is finely adjusted.

[0046] 13, the rotating body 93 located behind the left seat is rotated forward to engage the rotating body 93 with the backrest 3 of the left seat. Then, the lifting body 97 on the opposite side of the aisle is lowered from the upper position to the lower position, and the lifting body 97 is inserted between the table 5 and the armrest 4.

[0047] Next, as shown in Fig. 14, the second cart 8 is slid from the aisle toward the seating device 1 in the same manner as the first cart, and positioned so as to straddle the right-hand seat (aisle seat) in Fig. 14. Then, the position of the cart 8 is fine-tuned.

[0048] Next, as shown in Figure 15, the rotating body 93 located behind the right seat is rotated forward to engage the rotating body 93 with the backrest 3 of the right seat. Then, the aisle-side lifting body 97 is lowered from the upper position to the lower position, and the lifting body 97 is inserted between the table 5 and the armrest 4. Then, the metal fitting 88 of the first cart 8 is hooked onto the pin 87 of the second cart 8 to connect the carts 8 together.

[0049] In this state, the baggage 18 is transported together with the carriage 8 to the destination station. When the train arrives at the destination station, the baggage 18 is unloaded together with the carriage 8 from the passenger train.

[0050] As described above, according to the luggage transport structure 10 of the present invention, by folding the backrest 3 and table arm 6 of the seat device 1 horizontally facing forward, positioning the base plate 80 in the space created above the backrest 3, table arm 6, and table 5, and transporting the luggage 18 placed on the base plate 80 together with the bogie 8, it is possible to increase the amount of luggage that can be transported compared to when the luggage is transported by placing it on the seat 2. In addition, because there is no need to transfer the luggage 18 from the bogie 8 to the seat, the luggage 18 can be loaded onto a passenger train in a short time.

[0051] In the above-described embodiment, the backrest 3 is configured to recline, but the present invention is also applicable to a seating device in which the backrest 3 does not recline. The present invention is also applicable to a seating device that does not include a table 5 and a table arm 6. In that case, the lifting body 97 may be configured to be aligned along the inner surface of the armrest 4 at the lower position, or may be configured to be inserted between the backrest 3 and the armrest 4 at the lower position.

[0052] In the above-described embodiment, one rotating body 93 is provided at one end side of the base plate 80 in the longitudinal direction and one at the other end side, but in the present invention, only one rotating body 93 may be provided at one end side or the other end side of the base plate 80 in the longitudinal direction.

[0053] In the above-described embodiment, one lifting body 97 is provided on one end side of the base plate 80 in the short direction and one on the other end side, but in the present invention, only one lifting body 97 may be provided on one end side or the other end side of the base plate 80 in the short direction.

[0054] In the above-described embodiment, the movement of the carriage 8 is restricted using the rotating body 93 and the lifting body 97, but in the present invention, the movement of the carriage 8 may be restricted by means other than the rotating body 93 and the lifting body 97.

[0055] The above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to the embodiment. In other words, the present invention can be implemented in various modifications without departing from the gist of the present invention. [Explanation of symbols]

[0056] 1 Seating device 2 Seat part 3 Backrest 4 armrests 5 tables 6 Table Arm 8 carts 10. Luggage transport structure 80 base plate 82 legs 83 Wheels 93 Rotating body 97 Lifting body

Claims

1. A bogie to be loaded on a passenger train on which a seat device is installed, a base plate positioned in a space created above the backrest when the backrest of the seat device is folded forward; a plurality of legs depending from the base plate; a wheel attached to the lower end of each of the legs; A space is formed between the legs so that the carriage does not interfere with the seat device when the carriage is slid from the aisle of the passenger train toward the seat device with the wheels in contact with the floor. A bogie characterized by:

2. The base plate is a rectangle having a longitudinal direction and a lateral direction, A rotating body having a rotation center axis parallel to the short side direction is provided.

2. The truck according to claim 1 .

3. the rotating body includes a flat plate and a first rib and a second rib protruding from one surface of the flat plate; the first rib and the second rib extend parallel to each other in the short-side direction, The rotating body is provided at one end side in the longitudinal direction, and rotates from a state in which the flat plate is in the vertical direction toward the other end side in the longitudinal direction.

3. The truck according to claim 2.

4. The rotating body is provided one at one end side and one at the other end side in the longitudinal direction.

3. The truck according to claim 2.

5. The base plate is a rectangle having a longitudinal direction and a lateral direction, The lifting body is formed in a plate shape extending in the longitudinal direction and is capable of moving up and down between an upper position near the base plate and a lower position lower than the base plate. The bogie according to any one of claims 1 to 4.

6. A maintaining means for maintaining the lift body at the upper position is provided.

6. The truck according to claim 5.

7. The lifting body is provided one at one end side in the short side direction and the other at the other end side.

6. The truck according to claim 5.

8. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 1, The seat device includes a seat portion and a backrest that can be folded forward, The platform is positioned in the space created above the backrest that is folded forward, and the luggage placed on the platform is transported together with the dolly. A cargo transport structure characterized by:

9. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 2, The seat device includes a seat portion and a backrest that can be folded forward, The base plate is positioned in the space created above the backrest, which is folded forward, with the longitudinal direction of the base plate aligned with the front-to-rear direction of the seat device. When the rotating body is rotated in this state, the rotating body and the backrest engage with each other, and the luggage placed on the base plate is transported together with the dolly. A cargo transport structure characterized by:

10. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 3, The seat device includes a seat portion and a backrest that can be folded forward, The backrest includes a pair of left and right arm portions and a beam portion that is bridged between the pair of arm portions and connects the pair of arm portions, The base plate is positioned in the space created above the backrest that is folded forward, with the flat plate oriented vertically and the longitudinal direction of the base plate aligned with the front-to-rear direction of the seat device. In this state, the rotating body is rotated to the other end in the longitudinal direction, whereby the beam portion engages between the first rib and the second rib and the flat plate engages between the pair of arms, and the cargo placed on the base plate is transported together with the dolly. A cargo transport structure characterized by:

11. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 4, The seat device includes a seat portion and a backrest that can be folded forward, The base plate is positioned in the space created above the backrest, which is folded forward, with the longitudinal direction of the base plate aligned with the front-to-rear direction of the seat device. In this state, one of the rotating bodies located at the rear of the seat device is rotated forward, whereby the rotating body and the backrest engage, and the luggage placed on the base plate is transported together with the dolly. A cargo transport structure characterized by:

12. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 5, The seat device includes a seat portion, a backrest that can be folded forward, and armrests; The platform is positioned in the space created above the backrest, which is folded forward, with the lifting body in the upper position and with the longitudinal direction of the platform aligned with the front-to-rear direction of the seating device. In this state, the lifting body is lowered to the lower position, so that the lifting body is aligned with the inner surface of the armrest, and the luggage placed on the platform is transported together with the dolly. A cargo transport structure characterized by:

13. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 5, the seat device comprises a seat portion, a backrest that can be folded forward, armrests, a table that is used behind the backrest, and a table arm that supports the table and can be folded forward; The platform is positioned in the space created above the backrest, the table arms, and the table, which are folded forward, with the lifting body in the upper position and with the longitudinal direction of the platform aligned with the front-to-rear direction of the seating device. In this state, the lifting body is lowered to the lower position, whereby the lifting body is inserted between the table and the armrest, and the luggage placed on the platform is transported together with the cart. A cargo transport structure characterized by:

14. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 6, The seat device includes a seat portion, a backrest that can be folded forward, and armrests; The platform is positioned in the space created above the backrest, which is folded forward, with the lifting body maintained in the upper position and with the longitudinal direction of the platform aligned with the front-to-rear direction of the seating device. In this state, the lifting body is lowered to the lower position, whereby the lifting body is aligned with the inner surface of the armrest, and the luggage placed on the platform is transported together with the dolly. A cargo transport structure characterized by:

15. A luggage transport structure using a seat device installed in a passenger train and the bogie according to claim 7, the seat device includes a seat portion, a backrest that can be folded forward, and an armrest located on the aisle side; The base plate is positioned in the space created above the backrest that is folded forward with the pair of lifting bodies in the upper position and with the longitudinal direction of the base plate aligned with the front-to-rear direction of the seat device, and in this state the lifting body located on the aisle side is lowered to the lower position, whereby the lifting body is aligned with the inner surface of the armrest, and the luggage placed on the base plate is transported together with the dolly. A cargo transport structure characterized by:

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