Mobile cabin set, mobile cabin, and attachment for cabin

The present application claims the benefit of Japanese Patent Application No. 2019-97800 filed on May 24, 2019 with the Japan Patent Office, the entire disclosure of which is incorporated herein by reference.

The present disclosure relates to a mobile cabin set, a mobile cabin, and an attachment for cabin.

A known seat is arranged in a moving body, such as a vehicle, and is slidable in the moving body (see Japanese Unexamined Patent Application Publication. No. 2012-6501). By sliding the seat in the moving body, an improved degree of freedom in a passenger's seating position can be achieved.

In such a conventional moving body, the seat may be movable as described above, but other interior components are fixed to a main body (i.e., a cabin) of the moving body. Thus, it is difficult to change layout in the cabin.

In one aspect of the present disclosure, it is preferable to provide a mobile cabin set that allows flexible arrangement of layout in a cabin.

One aspect of the present disclosure provides a mobile cabin set that comprises: a cabin body configuring a part of a moving body and comprising a ceiling surface, a floor surface, and two or more side surfaces that define an interior space; at least one rail arranged on at least one surface of the ceiling surface, or the two or more side surfaces of the cabin body, the at least one rail extending in a direction that intersects a vertical direction; and at least one attachment arranged in the interior space. The at least one rail comprises an attachment/detachment mechanism to allow attachment/detachment of the at least one attachment at a given position of the at least one rail.

This configuration enables a given attachment configuring an interior component to be attached to and detached from the rail, and also enables the attachment to be moved along the rail. Thus, layout in the cabin body can be flexibly arranged depending on an intended use of the cabin body, services to be provided in the cabin body, and so on.

In one aspect of the present disclosure, the at least one rail may comprise two or more rails arranged apart from one another along the vertical direction on a first side surface of the two or more side surfaces. This configuration enables arrangement of a wide variety of attachments along the first side surface of the cabin body. Thus, a more flexible layout in the cabin body can be achieved.

In one aspect of the present disclosure, the two or more rails may comprise a first rail arranged at a connecting portion of the first side surface with the ceiling surface, a second rail arranged at a connecting portion of the first side surface with the floor surface, and a third rail arranged in a region of the first side surface between the first rail and the second rail. This configuration enables arrangement of an attachment, such as a piece of furniture and an electronic device, at an appropriate height and in an appropriate attitude by selecting given one or more of the first rail, the second rail, and the third rail.

In one aspect of the present disclosure, the at least one attachment may comprise at least one piece of equipment for passenger space. This configuration enables the cabin body to be provided as a mobile passenger space.

In one aspect of the present disclosure, the at least one attachment may comprise at least one partition to divide the interior space into two or more spaces. This configuration enables an inside of the cabin body to be divided into two or more sections having respective given sizes depending on an intended use.

Another aspect of the present disclosure provides a mobile cabin that comprises: a cabin body configuring a part of a moving body and comprising a ceiling surface, a floor surface, and two or more side surfaces that define an interior space; and at least one rail arranged on at least one surface of the ceiling surface, or the two or more side surfaces of the cabin body, the at least one rail extending in a direction that intersects a vertical direction. The at least one rail comprises an attachment/detachment mechanism to allow attachment/detachment of at least one attachment arranged in the interior space at a given position of the at least one rail.

A further aspect of the present disclosure provides an attachment for cabin arranged in an interior space of a cabin body configuring a part of a moving body. The attachment for cabin is allowed to be attached/detached at a given position of at least one rail arranged on at least one surface of a ceiling surface, or two or more side surfaces that define the interior space of the cabin body, the at least one rail extending in a direction that intersects a vertical direction.

Such configurations allow an improved flexibility of layout in the cabin body by attaching to or detaching from the rail of a given attachment or by changing a position of a given attachment along the rail.

Some embodiments of the present disclosure will be described hereinafter by way of example with reference to the accompanying drawings, in which:

FIG. 1A is a schematic side view of a mobile cabin of an embodiment;

FIG. 1B is a schematic front view of the mobile cabin of FIG. 1A ;

FIG. 1C is a schematic plan view of the mobile cabin of FIG. 1A ;

FIG. 2A is a schematic side view of a rail in the mobile cabin of FIG. 1A ;

FIG. 2B is a schematic sectional view taken along a line IIB-IIB in FIG. 2A ;

FIG. 3A is a schematic plan view of a mobile cabin set of an embodiment;

FIG. 3B is a schematic front view of the mobile cabin set of FIG. 3A ;

FIG. 3C is a schematic rear view of the mobile cabin set of FIG. 3A ;

FIG. 4A is a schematic front view of an mobile cabin set of an embodiment;

FIG. 4B is a schematic plan view of the mobile cabin set of FIG. 4A ;

FIG. 5A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 5B is a schematic plan view of the mobile cabin set of FIG. 5A ;

FIG. 5C is a schematic front view of a mobile cabin set of an embodiment different from FIG. 5A ;

FIG. 6A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 6B a schematic plan view of the mobile cabin set of FIG. 6A ;

FIG. 7A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 7B a schematic plan view of the mobile cabin set of FIG. 7A ;

FIG. 8 is a schematic front view of a mobile cabin set of an embodiment;

FIG. 9 is a schematic front view of a mobile cabin set of an embodiment;

FIG. 10A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 10B is a schematic front view of a mobile cabin set of an embodiment;

FIG. 11A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 11B is a schematic plan view of the mobile cabin set of FIG. 11A ;

FIG. 12A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 12B is a schematic plan view of the mobile cabin set of FIG. 12A ;

FIG. 12C is a schematic plan view of the mobile cabin set of FIG. 12A ;

FIG. 13A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 13B is a schematic plan view of the mobile cabin set of FIG. 13A ;

FIG. 14A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 14B is a schematic plan view of the mobile cabin set of FIG. 14A ;

FIG. 15A is a schematic front view of a mobile cabin set of an embodiment;

FIG. 15B is a schematic plan view of the mobile cabin set of FIG. 15A ;

FIG. 16A is a schematic perspective view of an attachment/detachment mechanism of an embodiment different from FIG. 2A ;

FIG. 16B is a schematic sectional view of an attachment/detachment mechanism of an embodiment different from FIG. 2A and FIG. 16A ;

FIG. 17A is a schematic perspective view of an attachment/detachment mechanism of an embodiment different from FIG. 2A , FIG. 16A , and FIG. 16B ; and

FIG. 17B is a schematic sectional view of an attachment/detachment mechanism of an embodiment different from FIG. 2A , FIG. 16A , FIG. 16B , and FIG. 17A .

1. First Embodiment

1-1. [Mobile Cabin]

A mobile cabin 2 shown in FIGS. 1A, 1B, and 1C comprises a cabin body 3 and two or more rails (specifically, a first rail 4 A, a second rail 4 B, a third rail 4 C, a fourth rail 4 D, a fifth rail 4 E, and a sixth rail 4 F).

<Cabin Body>

The cabin body 3 comprises a cuboid box body that configures a part of a moving body. Specifically, the cabin body 3 defines a passenger space or a luggage space of a moving body (such as an automobile) that travels by itself on the ground.

The cabin body 3 is coupled to a platform 10 of the moving body. The platform 10 comprises tires 11 A, 11 B, 11 C, and 11 D, and a power source (not shown) to drive the tires.

For example, a motor, an engine, or the like is used for the power source of the platform 10 . The cabin body 3 is placed on the platform 10 and moves together with the platform 10 . A coupling manner between the platform 10 and the cabin body 3 is not limited to that in the present embodiment. For example, the platform 10 may be coupled to a forward or rearward portion of the cabin body 3 along a traveling direction (a longitudinal direction, or forward and rearward).

The cabin body 3 comprises a ceiling surface 31 , a floor surface 32 , a first side surface 33 A, a second side surface 33 B, a third side surface 33 C, and a fourth side surface 33 D that define an interior space 34 . The ceiling surface 31 and the floor surface 32 are arranged to face each other. Each of the first to fourth side surfaces 33 A, 33 B, 33 C, and 33 D couples the ceiling surface 31 to the floor surface 32 along a vertical direction (up and down). The interior space 34 of the cabin body 3 is a movable space (that is, a space of mobility) that is not fixed to one point.

The first side surface 33 A and the second side surface 33 B are each parallel to a moving direction of the moving body, and face each other. The third side surface 33 C and the fourth side surface 33 D each couple the first side surface 33 A and the second side surface 33 B, and face each other.

In the cabin body 3 , walls forming the ceiling surface 31 , the floor surface 32 , and the side surfaces 33 A, 33 B, 33 C, and 33 D may at least partially comprise a transparent member, such as glass, (that is, a window). Also, the ceiling surface 31 , the floor surface 32 , and the side surfaces 33 A, 33 B, 33 C, and 33 D at least partially comprises an openable/closable portion forming an entrance (that is, a door) of the cabin body 3 .

<Rail>

Two or more rails 4 A, 4 B, 4 C, 4 D, 4 E, and 4 F extend along a direction that intersects the vertical direction, and specifically along a horizontal direction. That is, the rails 4 A, 4 B, 4 C, 4 D, 4 E, and 4 F each have a longitudinal direction parallel to the horizontal direction.

The first rail 4 A (top rail, left side) is arranged at a connecting portion (that is, an upper end) of the first side surface 33 A with the ceiling surface 31 . The first rail 4 A is fixed at least to the first side surface 33 A. The first rail 4 A may be fixed to both of the first side surface 33 A and the ceiling surface 31 . The first rail 4 A is arranged to extend from one end to the other end of the first side surface 33 A along the horizontal direction.

The second rail 4 B (center rail, left side) is arranged at a connecting portion (that is, a lower end) of the first side surface 33 A with the floor surface 32 . The second rail 4 B is fixed at least to the first side surface 33 A. The second rail 4 B may be fixed to both of the first side surface 33 A and the floor surface 32 . The second rail 4 B is arranged parallel to the first rail 4 A and extending from one end to the other end of the first side surface 33 A along the horizontal direction.

The third rail 4 C (bottom rail, left side) is arranged in a region of the first side surface 33 A between the first rail 4 A and the second rail 4 B. The third rail 4 C is fixed to the first side surface 33 A. The third rail 4 C is arranged parallel to the first rail 4 A and the second rail 4 B, and extending from one end to the other end of the first side surface 33 A along the horizontal direction.

The first rail 4 A, the second rail 4 B, and the third rail 4 C are arranged on the first side surface 33 A to be spaced apart from one another along the vertical direction (located at different heights).

The fourth rail 41 ) is arranged at a connecting portion of the second side surface 33 B with the ceiling surface 31 . The fourth rail 4 D has a horizontally reversed shape of the first rail 4 A, and faces the first rail 4 A.

The fifth rail 4 E is arranged at a connecting portion of the second side surface 33 B with the floor surface 32 . The fifth rail 4 E has a horizontally reversed shape of the second rail 4 B, and faces the second rail 4 B.

The sixth rail 4 F is arranged in a region of the second side surface 33 B between the fourth rail 4 D and the fifth rail 4 E. The sixth rail 4 F has a horizontally reversed shape of the third rail 4 C, and faces the third rail 4 C.

As shown in FIGS. 2A and 2B , the first rail 4 A comprises an attachment/detachment mechanism 41 to allow attachment/detachment of a below-described attachment 5 at a given position. The attachment/detachment mechanism 41 of the present embodiment comprises a hollow space 42 extending along a longitudinal direction of the first rail 4 A, a channel 43 communicating the hollow space 42 with an exterior of the first rail 4 A, and an insertion opening 44 provided continuously with the channel 43 .

The channel 43 has a height (vertical width) smaller than a height (vertical width) of the hollow space 42 . The hollow space 42 has an upper end positioned higher than the channel 43 and a lower end positioned lower than the channel 43 . The insertion opening 44 is configured such that the height of the channel 43 is equal to or greater than the height of the hollow space 42 .

A attachment portion 51 of the attachment 5 is contained in the hollow space 42 . The attachment portion 51 has a vertical width greater than the vertical width of the channel 43 . Thus, the attachment portion 51 arranged in the hollow space 42 cannot be pulled out from the channel 43 .

The attachment portion 51 arranged in the hollow space 42 abuts an inner wall of the hollow space 42 , thereby inhibiting rotation of the attachment portion 51 about its axis parallel to the longitudinal direction of the first rail 4 A. As a result, the attachment portion 51 is held by the first rail 4 A.

Also, the attachment portion 51 is slidable along the channel 43 and along the longitudinal direction of the first rail 4 A. Such sliding movement of the attachment portion 51 enables movement of the attachment 5 to a given position, while holding the attachment 5 by the first rail 4 A.

The attachment portion 51 of the attachment 5 is inserted through the insertion opening 44 into the hollow space 42 , and is slid along the longitudinal direction of the first rail 4 A to a position overlapping the channel 43 , and thereby the attachment portion 51 is held by the first rail 4 A. The insertion opening 44 need not necessarily be provided at an end of the channel 43 along the longitudinal direction of the first rail 4 A, but may be provided at an optional position. Multiple insertion points may exist. Also, the attachment/detachment mechanism 41 need not necessarily include the insertion opening 44 .

For example, the attachment portion 51 may comprise a deformation mechanism in which a lower part 51 A of the attachment portion 51 moves upward by an operation of a lever provided to the attachment 5 . The deformation mechanism allows insertion of the attachment portion 51 from the channel 43 into the hollow space 42 , in a state where the lower part 51 A is moved upward than the lower end of the channel 43 . After the insertion into the hollow space 42 , the lower part 51 A is brought to project from the lower end of the channel 43 , and thereby the attachment portion 51 is held by the first rail 4 A. When removing the attachment portion 51 from the first rail 4 A, the lower part 51 A is moved upward and the attachment portion 51 is rotated in the hollow space 42 , and thereby the attachment portion 51 can be pulled out from the hollow space 42 .

The second rail 4 B, the third rail 4 C, the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F each comprise a corresponding attachment/detachment mechanism 41 , which is similar to that of the first rail 4 A.

Each of the rails formed of, for example, metal has sufficient rigidity to stably hold the attachment 5 . This enables reduction in required rigidity of the attachment 5 , and thus enables weight reduction and a simplified configuration of the attachment 5 .

Each of the rails may comprise wires, for example, to supply power to the attachment 5 and to perform telecommunications with the attachment 5 , and electrodes to electrically connect the attachment 5 to the aforementioned wires.

[1-2 Mobile Cabin Set]

A mobile cabin set 1 shown in FIG. 3A comprises the mobile cabin 2 , and at least one attachment 5 .

<Attachment>

The attachment 5 is an attachment for cabin to be arranged in the interior space 34 of the cabin body 3 .

The attachment 5 is placed in the interior space 34 by being attached to one of the rails 4 A, 4 B, 4 C, 4 D, 4 E, and 4 F. The attachment 5 comprises at least one attachment portion 51 (see FIGS. 2A and 2B ).

In an example of FIG. 3A , the mobile cabin set 1 comprises, as the attachments 5 , a chair unit 5 A and a kitchen unit 5 B. As shown in FIGS. 3B and 3C , the chair unit 5 A and the kitchen unit 5 B are each attached to the second rail 4 B, the third rail 4 C, the fifth rail 4 E, and the sixth rail 4 F.

As shown in FIG. 3A , the chair unit 5 A and the kitchen unit 5 B are each movable along the longitudinal directions of the rails. The chair unit 5 A and the kitchen unit 5 B are pieces of equipment for passenger space to make the cabin body 3 a mobile passenger space. A passenger P stays in the passenger space during moving or stopping of the moving body.

Other examples of the attachment 5 are described below.

FIGS. 4A and 4B show a table 5 C, which is also one example of the equipment for passenger space. The table 5 C is attached to the third rail 4 C and the sixth rail 4 F.

FIGS. 5A and 5B show a monitor 5 D, a camera 5 E, and an air conditioner 5 F, which are also examples of the equipment for passenger space. The monitor 5 D is attached to the first rail 4 A, the third rail 4 C, the fourth rail 4 D, and the sixth rail 4 F. The camera 5 E is attached to the fourth rail 4 D. The air conditioner 5 F is attached to the first rail 4 A and the fourth rail 4 D through a support beam 5 G.

As shown in FIG. 5C , the monitor 5 D may be attached to the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F. Specifically, the monitor 5 D may be arranged along the first side surface 33 A or the second side surface 33 B to which the rail is provided, or may be arranged along the third side surface 33 C or the fourth side surface 33 D to which no rail is provided.

FIGS. 6A and 6B show multiple seats 5 H and multiple seat belts 5 I, which are examples of the equipment for passenger space. The seats 5 H and the seat belts 5 I are each attached to the second rail 4 B and the third rail 4 C, or attached to the fifth rail 4 E and the sixth rail 4 F, and arranged to be parallel to the longitudinal direction of the rails. The seats 5 H may be arranged such that each seat front side faces forward in the traveling direction of the moving body, or may be arranged such that each seat front side faces inward of the cabin body 3 .

FIGS. 7A and 7B show cabinets 5 J and poles 5 K, which are also examples of the equipment for passenger space. The cabinets 5 J and the poles 5 K are each attached across the first rail 4 A, the second rail 4 B, and the third rail 4 C, or attached across the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F.

FIG. 8 shows an electronic device 5 L, a seat 5 M, and a table 5 N shown in are also examples of the equipment for passenger space. The electronic device 5 L is attached to the first rail 4 A. The electronic device 5 L is, for example, a monitor, a sensor, or other device. The seat 5 M is attached to the fifth rail 4 E. The seat 5 M is retractable (or foldable) between the fifth rail 4 E and the sixth rail 4 F. The table 5 N is attached to the second rail 4 B. The table 5 N is retractable (or foldable) in the vicinity of a floor surface 32 .

FIG. 9A shows a wheelchair fixing device 5 O, which is also one example of the equipment for passenger space. The wheelchair fixing device 5 O is attached to the fifth rail 4 E. The wheelchair fixing device 5 O is a tool for fixing wheels of a passenger's wheelchair W.

FIG. 10A shows a screen 5 P and a projector 5 Q, and FIG. 10B shows the camera 5 E, a back screen 5 R, and a lighting fixture 5 S. These are also examples of the equipment for passenger space. The screen 5 P in FIG. 10A is attached between and bridging the first rail 4 A and the sixth rail 4 F. The projector 5 Q is attached to the fourth rail 4 D to project images on the screen 5 P from behind the screen 5 P.

The camera 5 E in FIG. 10B is attached to the sixth rail 4 F together with the back screen 5 R. The back screen 5 R is disposed between and bridging the first rail 4 A and the fifth rail 4 E, and is also disposed between and bridging the first rail 4 A and the sixth rail 4 F. The lighting fixture 5 S is attached to the fourth rail 4 D.

FIGS. 11A and 11B show a luggage fixing device 5 T, which is one example of equipment for luggage space to make the cabin body 3 to be a luggage space for transporting or storing luggage. The luggage fixing device 5 T is a lashing belt to cover luggage B to thereby inhibit movement of the luggage B. The luggage fixing device 5 T is disposed between and bridging the second rail 4 B and the fifth rail 4 E.

The mobile cabin set 1 may include, as the attachment 5 , a partition to divide the interior space 34 of the cabin body 3 into two or more spaces. The mobile cabin set 1 including the partition as the attachment 5 enables dividing an inside of the cabin body 3 into two or more sections having respective given sizes.

A partition 5 U shown in FIG. 12A is a board attached to all of the rails 4 A, 4 B, 4 C, 4 D, 4 E, and 4 F. The partition 5 U includes a wall orthogonal to a longitudinal direction of each rail. As shown in FIG. 12B , the partition 5 U may divide the interior space 34 into a passenger space and a luggage space having respective given sizes along the traveling direction of the moving body. Also, as shown in FIG. 12C , two or more passenger spaces may be defined by the partition 5 U, and an entrance may be provided for each of the passenger spaces.

As shown in FIGS. 13A and 13B , the partition 5 U may be configured with a lashing belt. A luggage shelf 5 V shown in FIGS. 13A and 13B is attached between and bridging the third rail 4 C and the sixth rail 4 F. The luggage shelf 5 V also functions as a partition to vertically divide the interior space 34 .

Multiple partitions 5 W shown in FIGS. 14A and 14B are used as partitions to partially divide the interior space 34 to be used as the passenger space. Each of the partitions 5 W is attached across the first rail 4 A, the second rail 4 B, and the third rail 4 C, or attached across the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F. Each of the partitions 5 W may be positionally adjusted along the longitudinal directions of the rails to which the partition 5 W is attached.

A floorboard 5 X shown in FIGS. 15A and 15B is disposed between and bridging the third rail 4 C and the sixth rail 4 F. The floorboard 5 X vertically divides the interior space 34 to thereby form the second floor. A staircase 5 Y includes an upper end attached to the third rail 4 C and a lower end attached to the fifth rail 4 E. The staircase 5 Y forms an approach to an upper surface of the floorboard 5 X (that is, the second floor). The first floor and the second floor divided by the floorboard 5 X are each used as the passenger space or the luggage space.

[1-3. Effects]

The above-detailed embodiments achieve the following effects:

(1a) It is possible to attach and detach the given attachment 5 that configures an interior component to and from the rail 4 A, 4 B, 4 C, 4 D, 4 E, or 4 F, and to move the attachment 5 along the rail 4 A, 4 B, 4 C, 4 D, 4 E, or 4 F. Thus, layout inside the cabin body 3 can be arranged in accordance with, for example, an intended use of the cabin body 3 and services to be provided inside the cabin body 3 .

(1b) It is possible to arrange various types of the attachments 5 along the side surface 33 A and/or the side surface 33 B since the rails 4 A, 4 B, 4 C, 4 D, 4 E, and 4 F are arranged on the side surfaces 33 and 33 B of the cabin body 3 . Thus, an improved flexibility of the layout inside the cabin body 3 can be achieved.

(1c) It is possible to select one or more of the first rail 4 A, the second rail 4 B, the third rail 4 C, the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F to thereby arrange the attachment 5 , such as a piece of furniture and an electronic device, at an appropriate height and in an appropriate attitude.

2. Other Embodiments

Although some embodiments of the present disclosure have been described above, it is to be understood that the present disclosure is not limited to the above-described embodiments, but may be implemented in various forms.

(2a) In the mobile cabin set 1 and the mobile cabin 2 of the above-described embodiments, the first rail 4 A, the second rail 4 B, and the third rail 4 C may be arranged on the third side surface 33 C or the fourth side surface 33 D. Also, each of the rails may be arranged across two or more side surfaces.

(2b) The mobile cabin set 1 and the mobile cabin 2 of the above-described embodiments may include only some of the first rail 4 A, the second rail 4 B, the third rail 4 C, the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F. Also, the mobile cabin set 1 and the mobile cabin 2 may include any rail other than the first rail 4 A, the second rail 4 B, the third rail 4 C, the fourth rail 4 D, the fifth rail 4 E, and the sixth rail 4 F.

Further, the mobile cabin set 1 and the mobile cabin 2 may include a rail arranged on the ceiling surface 31 of the cabin body 3 . Moreover, the mobile cabin set 1 and the mobile cabin 2 may include only a single rail.

(2c) In the mobile cabin set 1 and the mobile cabin 2 of the above-described embodiments, the attachment/detachment mechanism 41 is not limited to the above-described configuration but may have any configuration that allows attachment/detachment of the attachment 5 . For example, the attachment/detachment mechanism 41 shown in FIG. 16A includes two or more oval holes 45 . By inserting an oval plate-shaped insertion portion 52 provided to the attachment 5 into a given one of the holes 45 and rotating the insertion portion 52 , the attachment 5 is attached to the rail 4 A. Also, the attachment/detachment mechanism 41 shown in FIG. 16B includes a channel 46 A allowing insertion therein of the attachment 5 and two or more protrusions 46 B protruding from side surfaces facing each other (that is, an upper surface and a lower surface) of the channel 46 A. The protrusions 46 B clamp the attachment 5 in the channel 46 A, to thereby lock the attachment 5 .

The attachment/detachment mechanism 41 is not limited to a mechanical structure, but may be configured to hold the attachment 5 with magnetic force. For example, the attachment/detachment mechanism 41 may include an electromagnet that attaches/detaches the attachment 5 by turning on/off of current supply.

Further, a direction of attachment/detachment of the attachment 5 relative to the rail 4 A may be vertical. For example, the attachment/detachment mechanism 41 shown in FIG. 17A includes two or more pins 47 projecting upward from a main body of the rail 4 A. By inserting tubular portions 53 provided to the attachment 5 around given pins 47 , the attachment 5 is attached to the rail 4 A. Any holding mechanism as described above (i.e., locking by protrusions, holding by magnetic force, etc.) may be used to fix the tubular portions 53 and the pins 47 . Moreover, the attachment/detachment mechanism 41 shown in FIG. 17B includes a hole 48 allowing vertical insertion of a pin. 54 provided to the attachment 5 . An elastically deforming portion 55 provided at an end of the pin 54 inhibits the pin 54 from being pulled out of the hole 48 .

(2d) The moving body configured with the mobile cabin set 1 and the mobile cabin 2 in the above-described embodiments is not limited to a vehicle that travels on the ground. The moving body may be, for example, a ship or boat, an aircraft, a space ship, and so on.

(2e) A function performed by a single element in the above-described embodiments may be achieved by a plurality of elements, or a function performed by a plurality of elements may be achieved by a single element. Also, a part of a configuration in the above-described embodiments may be omitted. Moreover, at least a part of a configuration in the above-described embodiments may be added to, or may replace, another configuration of the above-described embodiments. Any form included in the technical idea defined in the language of the claims may be an embodiment of the present disclosure.