Camping trailer

Abstract

To provide a camping trailer which can expand interior space of a vehicle by connecting a front cabin and a rear cabin before and after of a center cabin provided with an opening / closing door and a travel wheel and then sliding and moving the front cabin and the rear cabin in both cross directions, respectively.SOLUTION: A camping trailer 10 connects first slide movement means 18 which is provided within the vehicle body frame 22 of a front cabin 16 and second slide movement means 23 which is provided within a vehicle body frame 22 of a rear cabin 21 to slide movement means 15 which is provided within the vehicle body frame 22 of a center cabin 11 and slides and moves the front cabin 16 and the rear cabin 21 in both cross directions, respectively in middle of the center cabin 11 and at the same time adopts means that installs across a connection part and then is connected in a tunnel-like shape by a hood seat unit 26 and a bellows seat unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a camper trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening / closing door and running wheels, and the interior space can be expanded by sliding the front cabin and the rear cabin in both the forward and backward directions, respectively. [Background technology]

[0002] Conventional camper trailers are subject to operating conditions that prohibit passengers from riding in them while they are moving, but their characteristic structure is that the towing vehicle and the trailer are connected by a coupler. In other words, if you detach the towing vehicle and the trailer, you can go anywhere you like independently using just the towing vehicle (your own car). Therefore, unlike conventional large self-propelled camper trailers, these trailers are more maneuverable at the travel destination, making it easy to sightsee and shop locally, greatly increasing the freedom and enjoyment of the trip. In addition, the shape and arrangement of the seats inside the trailer can be freely designed, and the size of the vehicle and interior specifications can also be designed to reflect a wide range of user preferences, so demand for them as a means of transportation for overnight drive trips is increasing in recent years.

[0003] A wide variety of camper trailers have been developed to reflect such diverse user preferences. For example, an "expandable freight car" (Patent Document 1) has been proposed in which the front half of a freight car body consisting of a front side wall and a bottom wall is inserted onto the rear half of the freight car body consisting of a rear side wall and a bottom wall to form a freight car body, a towing coupling is provided at the front of this freight car body, an entrance / exit is provided at the rear side wall, and wheels are provided at the bottom, and a bellows-shaped hood is stretched and contracted over both side walls and the roof, and the cargo body is configured to be expandable and contractable back and forth using an expansion device.

[0004] In addition, a "vehicle with rear extension function" (Patent Document 2) has been proposed, which is characterized by comprising a vehicle body in which the driver's cab and luggage compartment are formed as one unit and the rear end of the luggage compartment is open, an extension section that extends rearward from the rear end of the vehicle body, a rear unit that is provided at the rear end of the extension section and attached to the vehicle body so as to close the opening of the vehicle body when moved forward by the extension section, and support means that holds the extension section and the rear unit in a predetermined position.

[0005] However, both the proposals for the "telescopic freight car" and the "automobile with rear extension function" were proposals to expand the interior space by expanding and contracting a bellows-shaped canvas sheet in one direction, either the front or rear of the vehicle (not both forward and backward), and were not camper trailers like the present invention, in which the interior space is expanded by connecting a front cabin and a rear cabin to the front and rear of a center cabin equipped with opening and closing doors and running wheels, and by sliding the front cabin and rear cabin in both forward and backward directions, respectively.

[0006] The applicant has taken the above problems into consideration and conceived of a camping trailer that is compact and allows for greater expansion of interior space than the large, luxuriously equipped, high-priced camping trailers that have been popular up until now.He developed a camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin, which is equipped with opening and closing doors and running wheels, and the front cabin and rear cabin can be slid in both the forward and backward directions, respectively, to expand the interior space, which has led to the proposal of the "camping trailer" of the present invention. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Jpn. Jpn. Published No. 49-27941 [Patent Document 2] Japanese Patent Application Publication No. 9-123825 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above problems, and its objective is to provide a camper trailer in which the interior space can be expanded by connecting a front cabin and a rear cabin to the front and rear of a center cabin equipped with an opening / closing door and running wheels, and by sliding the front cabin and rear cabin in both the forward and backward directions, respectively. [Means for solving the problem]

[0009] The camping trailer of the present invention is a camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening / closing door and running wheels, and the front cabin and the rear cabin can be slid in both forward and backward directions to expand the interior space, the camping trailer is made up of a center cabin, a front cabin, a rear cabin, and a top sheet unit, the center cabin is a hollow box-shaped vehicle body with the front and rear fully open, opening / closing doors are provided on both sides of the vehicle body, running wheels are provided on both sides of the lower body frame, and a sliding movement means for receiving a first sliding movement means and a second sliding movement means is provided within the vehicle frame, the front cabin is formed in a shape that rises vertically from the floor surface of the body frame within the overall height, width and length of the entire trailer to expand the interior space, and the front ceiling portion is formed in a semi-dome shape, and further the first sliding movement means is provided within the vehicle body frame, a pull-out handle is provided at the front portion, and a connecting towing device and a slide are provided at the lower front portion. the rear cabin is formed in a shape that rises vertically from the floor surface of the vehicle frame within the overall height, width and length of the trailer body to expand the interior space, and the rear ceiling is formed in a semi-dome shape, and further a second sliding movement means is provided within the vehicle frame, a pull-out handle is provided at the rear portion, and sliding movement auxiliary wheels are provided at the lower rear portion; the hood sheet unit is composed of a hood sheet reinforcing frame and a hood sheet, and the hood sheet reinforcing frame is formed in a removable shape that is made of angle steel having a predetermined length and both ends processed into hook shapes, which are dropped into front and rear openings on the center cabin side and into hook holes opened in the openings of the center cabin and the rear cabin, so that it can be removed and bundled up and stored inside the vehicle when traveling, and when camping, at least three or more points are provided on the ceilings of the front cabin and the rear cabin to maintain a fixed distance between the center cabin, the front cabin and the rear cabin, and further a rectangular hood sheet with hood fastening holes on both ends is provided to fasten the opening on the center cabin side andThe opening on the front cabin side and the opening on the rear cabin side are connected to each other by a tunnel-like structure.

[0010] The camping trailer of the present invention is a camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening / closing door and running wheels, and the front cabin and the rear cabin can be slid in both forward and backward directions to expand the interior space, the camping trailer is made up of a center cabin, a front cabin, a rear cabin, and a bellows seat unit, the center cabin is a hollow box-shaped vehicle body with the front and rear fully open, opening / closing doors are provided on both sides of the vehicle body, running wheels are provided on both sides of a body frame at a lower part, and a sliding movement means for receiving a first sliding movement means and a second sliding movement means is provided within the body frame, and the front cabin can be moved vertically from the floor surface of the body frame within the overall height, width and length of the entire trailer, The rear cabin is formed in a shape that rises up to expand the interior space, and the front ceiling is formed in a half dome shape, and a first sliding movement means is provided within the body frame, a pull-out handle is provided at the front part, and a coupling towing device and a sliding movement auxiliary wheel are provided at the front lower part. The rear cabin is formed in a shape that rises up vertically from the floor of the body frame within the overall height, width, and length of the trailer body to expand the interior space, and the rear ceiling is formed in a half dome shape, and a second sliding movement means is provided within the body frame, a pull-out handle is provided at the rear part, and a sliding movement auxiliary wheel is provided at the rear lower part. The bellows sheet unit is composed of a tunnel-shaped bellows sheet reinforcing framework and a bellows sheet, and a means is adopted in which the opening on the center cabin side, the opening on the front cabin side, and the opening on the rear cabin side are connected by erecting a tunnel shape at the front and rear, respectively.

[0011] The camping trailer of the present invention is a camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin which is equipped with an opening / closing door and running wheels, and the front cabin and the rear cabin can be slid in both forward and backward directions to expand the interior space, the camping trailer is made up of a center cabin, a front cabin, a rear cabin, a top sheet unit and a bellows sheet unit, the center cabin is a hollow box-shaped vehicle body which is fully opened at the front and rear, both sides of the vehicle body are equipped with opening / closing doors, running wheels are provided on both sides of a body frame at a lower part, and a sliding movement means for receiving a first sliding movement means and a second sliding movement means is provided within the body frame, the front cabin is formed in a shape which rises vertically from the floor surface of the body frame within the overall height, width and length of the entire trailer so as to expand the interior space, and the front ceiling part is formed in a semi-dome shape, and further the first sliding movement means is provided within the body frame, a pull-out handle is provided at the front part, and a connecting tow bar is provided at the lower front part. The rear cabin is formed in a shape that rises vertically from the floor surface of the body frame within the overall height, width and length of the trailer body to expand the interior space, and the rear ceiling portion is formed in a semi-dome shape. A second sliding movement means is further provided within the body frame, a pull-out handle is provided at the rear portion, and sliding movement auxiliary wheels are provided at the lower rear portion. The hood sheet unit is composed of a hood sheet reinforcing frame and a hood sheet, and the hood sheet reinforcing frame is made of angle steel having a predetermined length and both ends processed into a hook shape. The canopy is formed in a removable shape that can be dropped into the front and rear openings on the center cabin side, and into the fastening holes opened in the front cabin and the rear cabin or the openings, so that it can be removed and stored inside the vehicle when traveling, and when camping, it can be installed in at least three places on the ceiling of the front cabin and the rear cabin, thereby maintaining a fixed distance between the center cabin, the front cabin, and the rear cabin, and further, the canopy is attached to the opening on the center cabin side by a single rectangular canopy sheet with canopy fastening holes on both ends.Either the opening on the front cabin side or the opening on the rear cabin side is connected in a tunnel-like manner, and the bellows sheet unit is composed of a tunnel-shaped bellows sheet reinforcing framework and a bellows sheet, and the opening on the center cabin side and the opening on the front cabin side or the opening on the rear cabin side, on which the hood sheet unit is not installed, are connected in a tunnel-like manner. Effect of the Invention

[0012] The camping trailer of the present invention has the excellent effect of expanding the interior space by connecting the front cabin and rear cabin to the front and rear of the center cabin, which is equipped with an opening / closing door and running wheels, and by allowing the front cabin and rear cabin to slide in both the forward and backward directions, respectively.

[0013] Furthermore, the camper trailer of the present invention has the excellent effect of making it possible to provide a camper trailer at an extremely low price range never before seen by using used cars such as second-hand cars, immobile cars, scrap cars, discarded cars, and wrecked cars as the base vehicle for the center cabin.

[0014] Furthermore, the camper trailer of the present invention has the excellent effect of utilizing used cars with reduced vehicle values ​​such as second-hand cars, immobile cars, scrap cars, scrapped cars, and wrecked cars as the base vehicle, thereby making effective use of vehicle resources that would otherwise be scrapped.

[0015] Furthermore, according to the camper trailer of the present invention, because the center cabin reuses the vehicle exterior design (vehicle body design) of an existing vehicle manufacturer, it is possible to provide a camper trailer that has excellent vehicle body design performance, such as compactness, light weight, drivability, exterior design, versatility, robustness, waterproofness, soundproofing, durability, weather resistance, safety, convenience, and ease of procurement of repair parts.

[0016] Furthermore, the camping trailer of the present invention can be manufactured by processing part of an existing used car in the center cabin, which has the excellent effect of significantly reducing production costs, production days, and production processes compared to conventional handmade camping trailers.

[0017] Furthermore, according to the camping trailer of the present invention, when manufacturing the center cabin, it is possible to reuse equipment that is installed in existing used cars, such as width lights, turn signals, stop lamps, interior lights, license plate lights, hazard lights, battery, locking key, automatic door lock device, door glass raising / lowering device, anti-theft warning device, radio, sugar lighter, etc., thereby providing a camping trailer with excellent crime prevention and convenience.

[0018] Furthermore, the camper trailer of the present invention has the excellent effect of ensuring complete privacy by attaching a shielding film to the window glass of an existing used car.

[0019] Furthermore, the camper trailer of the present invention can be easily detached from the towing vehicle and stored when parked at home, meaning it can be used as a child's study room or a secret base, while when used by adults it can be used as a hobby room (for watching movies or music, reading, playing games, Go, Shogi, Mahjong, painting, playing musical instruments, etc.), a study, a telework room or a relaxation room, providing the excellent benefits.

[0020] Furthermore, with the camping trailer of the present invention, the towing vehicle can be used as a normal passenger vehicle for commuting, shopping, etc. during everyday use, and at holiday destinations, the trailer house can be detached and the vehicle can be used as the passenger vehicle that the driver is accustomed to driving, which has the excellent effect of eliminating fatigue when driving and allowing for a wider range of activities at holiday destinations, such as sightseeing and shopping.

[0021] Furthermore, according to the camping trailer of the present invention, the floor surface inside the vehicle is completely flat and open, which has the excellent effect of providing space suited to the intended use (storing beds, sofas, bicycles, motorbikes, tents, surfing, paragliding, scuba diving, mountain climbing equipment, sports equipment, camping equipment, bedding, etc.).

[0022] Furthermore, the camping trailer of the present invention has the excellent effect of increasing the purchasing interest of camping users because the center cabin is low-priced, while at the same time making it possible to produce in advance and display and sell inventory.

[0023] Furthermore, according to the camping trailer of the present invention, since the trailer house is basically sold as a standalone unit, it has the excellent effect of allowing the purchasing user to purchase a unique and low-priced camping trailer that is unlike anything seen before, in accordance with their personal tastes and purchasing budget.

[0024] Furthermore, with the camping trailer of the present invention, the trailer house is formed into a relatively compact small vehicle, ranging from a light van type to a one-box type, which has the excellent effects of not taking up much parking space, and the towing distance is shorter than that of conventional camping trailers, making it easy to drive even for women or drivers with little driving experience.

[0025] Furthermore, according to the camping trailer of the present invention, while conventional camping trailers were mainly designed with large, luxurious interiors targeted at large families, the camping trailer of the present invention is a compactly designed camping trailer targeted at smaller groups (couples, romantic partners, or hobby friends) as well as solo campers (single people who sleep in their car) who pursue their hobbies, and therefore has the excellent effect of creating a new demand segment that is different to the family-oriented demand segment for conventional camping trailers.

[0026] Furthermore, according to the camper trailer of the present invention, the front and rear cabins are made of materials such as FP, steel plate, aluminum plate, synthetic resin material, etc., which has the excellent effect of making it possible to provide diverse and innovative car designs by adjusting the shape design to suit the user's preferences and model year.

[0027] Furthermore, according to the camping trailer of the present invention, the canvas top sheet reinforcing frame is installed in at least three or more places, and by adding design items that can be easily implemented by a person skilled in the art in terms of the material, shape, number of sheets, mounting fixtures, etc. of the canvas top sheet, or by changing the method of use, it is possible to make effective use of the canvas top sheet in an unprecedented way, as described below. (1) When the camper trailer of the present invention is installed as shown in FIG. 2, the top cover can be flipped up to the ceiling and folded down to create an open terrace deck with protection from the rain and sun. (2) By attaching a curtain rail to one end of the canopy sheet reinforcing frame, it is possible to attach a variety of curtains to suit the purpose of use, such as blackout / sleep curtains, insect repellent curtains, windproof curtains, transparent curtains, and curtains for changing clothes, while also allowing free entry and exit from the side. (3) Because the hood sheet is formed from a single rectangular sheet, the product itself can be produced inexpensively and can be subjected to a design-oriented print transfer process. Furthermore, a viewing window that also serves as a light source can be easily provided. (4) When stored inside the vehicle, it can be folded flat and stored compactly. (5) When parked at home, it has the excellent effect of being usable as a private room with freely adjustable spatial sparseness, a storage shed, a pet kennel (with a fence), or a vinyl greenhouse. [Brief description of the drawings]

[0028] [Figure 1]FIG. 1 is an explanatory diagram showing an embodiment of a camping trailer of the present invention (Example 1). [Diagram 2] FIG. 2 is an explanatory diagram showing a state in which the camping trailer of the present invention is used. [Diagram 3] 4 is an explanatory cross-sectional view showing a state in which the front cabin and the rear cabin in the camping trailer of the present invention have been slid. FIG. [Figure 4] FIG. 11 is an explanatory diagram showing another embodiment of the camping trailer of the present invention (Example 2). [Diagram 5] FIG. 11 is an explanatory diagram showing another state of use of the camping trailer of the present invention. [Figure 6] 10 is another cross-sectional explanatory view showing the state in which the front cabin and the rear cabin in the camping trailer of the present invention have been slid. FIG. [Figure 7] FIG. 11 is an explanatory diagram showing another embodiment of the camping trailer of the present invention (Example 3). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The greatest feature of the camping trailer 10 of the present invention is that a front cabin 16 and a rear cabin 21 are connected to the front and rear of a center cabin 11 equipped with an opening and closing door 13 and traveling wheels 12, and the front cabin 16 and the rear cabin 21 can be slid in both the front and rear directions, respectively, to expand the interior space R. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0030] Furthermore, the camper trailer 10 of the present invention is not limited to the embodiments described below, but can be modified as appropriate within the scope of the technical concept of the present invention, i.e., within the range of shapes and dimensions that can achieve the same functional effects. EXAMPLES

[0031] FIG. 1 is an explanatory diagram showing an embodiment of a camping trailer of the present invention. FIG. 1(a) is an overall view of a camping trailer 10 of the present invention in use. FIG. 1(b) is an exploded explanatory view of the camper trailer 10 of the present invention. The camping trailer 10 of the present invention is a camping trailer 10 in which a front cabin 16 and a rear cabin 21 are connected to the front and rear of a center cabin 11 equipped with an opening and closing door 13 and running wheels 12, and the interior space R can be expanded by sliding the front cabin 16 and the rear cabin 21 in both the front and rear directions, respectively. The camping trailer 10 is composed of the center cabin 11, the front cabin 16, the rear cabin 21, and a top seat unit 26, and the center cabin 11 is a hollow box-shaped vehicle body. The front and rear of the trailer 11a are completely open, and both sides of the vehicle body 11a are provided with opening and closing doors 13. Traveling wheels are provided on both sides of the lower body frame 14. The vehicle body frame 22 is provided with slide movement means 15 that receives a first slide movement means 18 and a second slide movement means 23. The front cabin 16 rises vertically from the floor surface of the body frame 22 within the overall height, width and length of the entire trailer, and is formed in a shape that expands the interior space R. The front ceiling part is formed in a semi-dome shape. Furthermore, the vehicle body frame 17 is provided with a first slide movement means 18 and a second slide movement means 23. The trailer trailer is provided with a top moving means 18, a pull-out handle 24 on the front portion, and a coupling towing device 19 and a slide movement auxiliary wheel 20 on the front lower portion. The rear cabin 21 rises vertically from the floor of the vehicle body frame 22 within the overall height, width, and length of the trailer body, and is formed in a shape that expands the interior space R, and the rear ceiling portion is formed in a semi-dome shape. Further, the vehicle body frame 22 is provided with a second slide movement means 23, a pull-out handle 24 on the rear portion, and the slide movement auxiliary wheel 20 on the rear lower portion. The top sheet unit 26 is provided with a top sheet reinforcing frame. The canopy sheet reinforcement frame 27 is made of angle steel having a predetermined length and both ends machined into a hook shape, and is formed into a removable shape that can be dropped into the front and rear openings 11b on the center cabin 11 side and into the hook holes (not shown) opened in the openings 16a, 21a of the front cabin 16 and the rear cabin 21. When traveling, the canopy sheet reinforcement frame 27 can be removed and stored inside the vehicle by bundling it up, and when camping, at least three or more can be provided on the ceiling parts of the front cabin 16 and the rear cabin 21 to attach the canopy sheet reinforcement frame 27 to the center cabin 11 andThe distance between the front cabin 16 and the rear cabin 21 is kept fixed, and the opening 11b on the center cabin 11 side is connected to the opening 16a on the front cabin 16 side and the opening 21a on the rear cabin 21 side by a single rectangular hood sheet 28 with hood fastening holes 31 on both ends, forming a tunnel shape between the front and rear. In addition, the camper trailer 10 is illustrated with the same vehicle height as the towing vehicle C, but this is not necessarily limited to the same vehicle height.

[0032] The center cabin 11 has a hollow box-shaped vehicle body 11a with openings 11b that are completely open at the front and rear, opening and closing doors 13 on both sides of the vehicle body 11a, running wheels 12 on both sides of a body frame 22 at the lower part, and a sliding movement means 15 within the body frame 14 that accepts a first sliding movement means 18 and a second sliding movement means 23. In addition, the center cabin 11 can be manufactured using existing used cars, immobile cars, scrap cars, discarded cars, wrecked cars, etc. with a hatchback door at the rear, and using minivans, wagons, commercial vans, light wagons / vans, high-roof cars, etc. from which the driving functions inside the car, such as the engine drive system, steering system, seat system, drive shaft, exhaust muffler, etc. have been removed, making it possible to provide an extremely inexpensive camper trailer 10.

[0033] The opening and closing doors 13 are provided on both sides of the vehicle body 11a and allow free entry and exit to both the front cabin 16 side and the rear cabin 21 side, and are located in a different location from the front and rear entrances and exits of conventional camper trailers.

[0034] The sliding movement means 15 is intended to expand the interior space R by extending and retracting the front cabin 16 and the rear cabin 21 back and forth. For example, a plurality of sliding movement means 15 are attached at different mounting positions in the body frame 14 of the center cabin 11, and are combined with the first sliding movement means 18 on the front cabin 16 side and the rear cabin 21 side and the second sliding movement means 23 with the flat side of the H-shaped steel facing up. (See the balloon diagram in FIG. 2(b)) The slide movement method may be, for example, hydraulic, electric, pneumatic, rack and pinion, wire, or chain.

[0035] The front cabin 16 is formed in a shape that rises vertically from the floor surface of the body frame 17 within the overall height, width and length of the entire trailer, expanding the interior space R, and the front ceiling portion is formed in a semi-dome shape. Furthermore, a first sliding movement means 18 is provided within the body frame 17, a pull-out handle 24 is provided at the front portion, and a connecting towing device 19 and sliding movement auxiliary wheels 20 are provided at the front lower portion. The front cabin 16 and the rear cabin 21 do not necessarily have the same length in the front-rear direction. (In the drawings, the front-rear directions are drawn as if they have the same length.)

[0036] The shape is, for example, streamlined to reduce air resistance in the front, and the viewing window 38 is formed by processing the outer periphery of the windshield part removed from a used car.

[0037] Furthermore, when the material of the front cabin 16 is, for example, FP, steel plate, aluminum plate, synthetic resin material, etc., the shape design can be varied to suit the user's preferences and the year of the vehicle.

[0038] The first sliding movement means 18 is, for example, a plurality of pieces attached to the body frame 17 of the front cabin 16, and is formed by a combination of a C-shaped steel (on the center cabin 11 side) and an H-shaped steel (on the front cabin 16 side) (see the balloon in FIG. 2(b)). The first slide moving means 18 and the second slide moving means 23 are combined with the slide moving means 15 of the center cabin 11, but are mounted at laterally offset positions so as not to interfere with each other.

[0039] The connecting towing device 19, also known as a hitch member, is connected to the lower rear center of the body frame of the towing vehicle C (private car) and the lower front center of the body frame 17 on the front cabin 16 side by a ball mount and receiver, and is equipped with a trailer jack with driving assistance tires, a parking brake, a safety connecting chain, a wiring connector, an air duct hose, etc.

[0040] The sliding movement auxiliary wheels 20 are provided, for example, on both the front lower sides of the front cabin 16 and on both the rear lower sides of the rear cabin 21, and are folded inward and stored when traveling, and when installed and fixed, are opened outward from the folded state and installed and fixed by rotating the handle part. In addition, by using auxiliary wheel tires with stoppers, the camping trailer 10 can be fixed in place while in contact with the ground.

[0041] The rear cabin 21 rises vertically from the floor of the body frame 22 within the overall height, width and length of the trailer body, and is formed in a shape that expands the interior space R, with the rear ceiling portion formed in a semi-dome shape. Further, a second sliding movement means 23 is provided within the body frame 22, a pull-out handle 24 is provided at the rear portion, and sliding movement auxiliary wheels 20 are provided at the lower rear portion.

[0042] In addition, the rear cabin 21 is attached to the rear opening 11b of the center cabin 11 in a shape that expands the interior space R, for example, formed in a streamlined shape that reduces rear air resistance, and a viewing window 38 is formed by processing the outer peripheral edge of the windshield part removed from the used car.

[0043] In addition, the shape of the rear cabin 21 can be divided into a medium-sized car finish and a small car finish, and can be standardized and mass-produced by processing it by hand to match the shape of an existing used car, and the shape is not particularly specified. In addition, the length in the front-rear direction of the rear cabin 21 and the front cabin 16 is not necessarily the same. (In the drawings, the length in the front-rear direction is drawn as being the same.)

[0044] Furthermore, when the rear cabin 21 is made of a material such as FP, steel plate, aluminum plate, synthetic resin, etc., the shape design can be varied to suit the user's preferences and the year of the vehicle.

[0045] The second sliding movement means 23 is, for example, a plurality of pieces attached to the body frame 22 of the rear cabin 21, and is formed by combining a C-shaped steel (on the center cabin 11 side) and an H-shaped steel (on the rear cabin 21 side) (see the balloon in FIG. 2(b)). The second sliding movement means 23 and the first sliding movement means 18 are combined with the sliding movement means 15 of the center cabin 11, but are mounted at laterally offset positions so as not to interfere with each other.

[0046] The pull-out handles 24 are provided in pair at the front of the front cabin 16 and at the rear of the rear cabin 21, and are used when pulling out or pushing in the front cabin 16 or rear cabin 21 from the center cabin 11.

[0047] The connection lock device 25 is, for example, a lock device that prevents the center cabin 11, the front cabin 16, and the rear cabin 21 from sliding from the outside, and may be, for example, a seat belt lock device, a latch, or a hook lock.

[0048] For example, in the case of a parking brake, the braking device (not shown) is attached to a desired location in the vehicle if it is a foot pedal type parking brake, and is attached to a desired location in the vehicle or in conjunction with the auxiliary tires of the towing device 19 if it is a handle type parking brake. Also, in the case of an electromagnetic disc brake, it is possible to reuse the electromagnetic disc brake of an existing used car and attach it in conjunction with the traveling wheels 12.

[0049] The hood sheet unit 26 is composed of a hood sheet reinforcing frame 27 and a hood sheet 28, and is attached at two locations, between the front cabin 16 and the center cabin 11, and between the center cabin 11 and the rear cabin 21.

[0050] The top sheet reinforcement frame 27 is made of angle steel of a predetermined length with both ends machined into a hook shape so that it can be easily attached and detached and dropped into hanging holes (not shown) opened in the front and rear openings 11b on the center cabin 11 side and in the openings 11b, 21a of the front cabin 16 and the rear cabin 21.This allows it to be removed and stored inside the vehicle when driving, and when camping, it is installed in at least three places on the ceiling of each of the front cabin 16 and the rear cabin 21 in a gable roof shape with the center higher than both sides, thereby maintaining a fixed distance between the center cabin 11 and the front cabin 16 and the rear cabin 21.

[0051] The canopy sheet reinforcement frame 27 has three roles: it reinforces the canopy sheet 28, it acts as a roof to repel rain, and it limits sliding movement. It is formed in a shape that allows equal-legged angle iron of a specified length with both ends machined into a hook shape to be dropped into a hanging hole (not shown). When in use, an equal-leg angle iron with both ends machined into a hook shape is dropped into and set in the hanging holes (not shown) opened near the front and rear openings 11b on the center cabin 11 side, the hanging holes (not shown) opened near the rear opening 16a on the front cabin 16 side, and the hanging holes (not shown) opened near the front opening 21a on the rear cabin 21 side.

[0052] When installing, the hood sheet reinforcing frame 27 is installed in at least three places, and by adding design items that can be easily done by a person skilled in the art in terms of the material, shape, number of sheets, mounting fixtures, etc. of the hood sheet 28 or by changing the method of use, it is possible to effectively utilize the hood sheet 28 in a way that has not been seen before, as shown below. For example, (1) When the camper trailer 10 of the present invention is installed as shown in FIG. 3, the top cover 28 can be folded over and overlapped on the ceiling to create an open terrace deck with protection from rain and sun. (2) By attaching a curtain rail to one end of the canopy sheet reinforcing frame 27, a variety of curtains can be attached according to the purpose of use, such as blackout / sleep curtains, insect repellent curtains, windproof curtains, transparent curtains, and curtains for changing clothes, and entry and exit can be freely provided from the side. (3) Since the hood sheet 28 is formed from a single rectangular sheet, the product itself can be produced inexpensively, and design print transfer processing can be applied. Furthermore, skylights can be easily provided. (4) When stored inside the vehicle, it can be folded flat and stored compactly. (5) When parked at home, it can be used as a private room with freely adjustable spatial sparseness, a storage shed, a pet kennel (with a fence), or a vinyl greenhouse, providing excellent usability.

[0053] The hood sheet 28 is a rectangular sheet with hood fastening holes 31 at both ends, which is connected in a tunnel-like shape between the center cabin 11, the front cabin 16 and the rear cabin 21.

[0054] The hood sheet 28 is formed, for example, from a rectangular canvas sheet or synthetic resin sheet having a tunnel-shaped width and a length of sliding amount, and hood fastening holes 31 are provided at a predetermined interval on both sides of the tunnel-shaped width, and is fitted into hood fastening twist fittings 30 provided on the center cabin 11, the front cabin 16, and the rear cabin 21, and is folded and stored inside the center cabin 11 when traveling.

[0055] The flat floor panel 35 is made of floor panel material formed into any shape, and is laid on the sliding movement means 15, as well as the second sliding movement means 23 and the first sliding movement means 18 so that the floor surface height is uniform with the flat floor panels 35 of the center cabin 11, the front cabin 16 and the rear cabin 21, and is stored overlapping each other inside the center cabin 11 when traveling.

[0056] The sleeping flat bed 36 is formed in a box-like flat bed shape, and a box with underfloor storage function is provided below the bed. The bed also serves as an indoor chair and is arranged in multiple combinations within the vehicle interior space R according to the purpose of use, and is stored stacked inside the center cabin 11 when traveling.

[0057] The indicator light device (not shown) is equipped with, for example, width lights, direction lights, stop lights, license plate lights, and hazard lights, and is connected in conjunction with the towing vehicle C (private car) via a wiring connector.

[0058] The air conditioning and heating device that is standard equipment on the towing vehicle C (private car) can send air from the towing vehicle C (private car) to the camper trailer 10 using a ventilation duct hose with a switching function. In addition, the operation function can be linked with the towing vehicle C (private car) so that it can be operated from an existing used car. Furthermore, by securing AC power from a generator, it is possible to use a household or portable air conditioning and heating device.

[0059] The interior space R is created by sliding the center cabin 11, the front cabin 16, and the rear cabin 21 in both the forward and backward directions, and can store a kitchen cabinet, a refrigerator, a generator, a water storage tank, a gas cylinder, a portable toilet, etc., and can also be equipped with a prefabricated flat bed 36 (which also serves as an indoor chair) with underfloor storage function, a table, a television, an AC power outlet, a USB port, etc., and can be used for multiple purposes such as cooking, entertainment, and sleeping.

[0060] FIG. 2 is an explanatory diagram showing a state in which the camping trailer of the present invention is used. FIG. 2(a) is an explanatory diagram showing a state in which the rear cabin 21 of the camping trailer 10 of the present invention has been slid rearward. (1) The connection lock device 25 and the slide movement lock device (not shown) that connect the center cabin 11 and the rear cabin 21 are released. (2) After the sliding movement auxiliary wheels 20 of the front cabin 16 are lowered and locked, the sliding movement auxiliary wheels 20 of the rear cabin 21 are lowered and the pull-out handle 24 is grasped to move the rear cabin 21 rearward. (3) The slide movement locking device (not shown) connecting the center cabin 11 and the rear cabin 21 and the locking device of the slide movement auxiliary wheels 20 of the rear cabin 21 are locked. (4) The tip of the top sheet reinforcement frame 27 is dropped into a hook hole (not shown) provided in the center cabin 11 and a hook hole (not shown) provided in the rear cabin 21, and connected and fixed. (5) The top fastening twist fittings 30 provided on the center cabin 11 and the top fastening twist fittings 30 provided on the rear cabin 21 are fitted into the top fastening holes 31 of the top sheet 28, thereby covering the center cabin 11 and the rear cabin 21 in a tunnel-like shape with the top sheet 28 and connecting them. (6) Place the necessary camping interior equipment in the interior space R.

[0061] FIG. 2(b) is an explanatory diagram showing a state in which both the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention have been slid and moved. The camping trailer 10 of the present invention has a front cabin 16 and a rear cabin 21 connected to the front and rear of a center cabin 11 equipped with running wheels 12, and the front cabin 16 and the rear cabin 21 are slidably moved in both the forward and backward directions by a sliding movement means 15, thereby expanding the interior space R.

[0062] FIG. 3 is an explanatory cross-sectional view showing a state in which the front cabin and the rear cabin of the camping trailer of the present invention have been slid. FIG. 3(a) is an explanatory cross-sectional view showing a state in which the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention have been slid. The camping trailer 10 of the present invention has a front cabin 16 and a rear cabin 21 connected to the front and rear of a center cabin 11 equipped with running wheels 12, and is slidable in both the forward and backward directions by the sliding movement means 15 of the center cabin 11, the first sliding movement means 18 of the front cabin 16, and the second sliding movement means 23 of the rear cabin 21, respectively, and the interior space R is expanded by extending the tunnel-shaped canvas sheet reinforcement frame 27 of the canvas sheet unit 26 and the canvas sheet 28.

[0063] FIG. 3(b) is an explanatory cross-sectional view showing a state in which the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention are slidably moved when in use. A flat floor panel 35 is laid on the floor surface of the expanded interior space R, and a plurality of flat sleeping beds 36 are arranged, completing the arrangement of fixtures and the layout suited to the intended use.

[0064] In the description of the second and third embodiments in the present specification, the description of the same parts and structures as those in the first embodiment will be omitted. EXAMPLES

[0065] FIG. 4 is an explanatory diagram showing another embodiment of the camper trailer of the present invention. FIG. 4(a) is an overall view of the camping trailer 10 of the present invention in use. FIG. 4(b) is an exploded explanatory view of the camper trailer 10 of the present invention. The camping trailer 10 of the present invention has a front cabin 16 and a rear cabin 21 connected to the front and rear of a center cabin 11 equipped with an opening / closing door 13 and running wheels 12, and the front cabin 16 and the rear cabin 21 can be slidably moved in both the forward and backward directions to expand the interior space R. The camping trailer 10 is made up of the center cabin 11, the front cabin 16, the rear cabin 21 and a bellows seat unit 32, and the center cabin 11 has a hollow box-shaped vehicle body 11a with the front and rear sides fully open, and is equipped with opening / closing doors 13 on both sides of the vehicle body 11a, and running wheels 12 are provided on both sides of a vehicle body frame 14 at the lower part. A first sliding movement means 18 and a second sliding movement means 20 are provided within the vehicle body frame 14. The front cabin 16 is formed in a shape that rises vertically from the floor surface of the body frame 22 within the overall height, width and length of the entire trailer, expanding the interior space R, and the front ceiling portion is formed in a semi-dome shape. Furthermore, the body frame 1 is provided with a first sliding movement means 18, a pull-out handle 24 is provided at the front portion, and a connecting towing device 19 and sliding movement auxiliary wheels 20 are provided at the lower front portion. The bellows sheet unit 32 is composed of a tunnel-shaped bellows sheet reinforcing framework 33 (not shown) and a bellows sheet 34, and the opening 11b on the center cabin 11 side, the opening 16a on the front cabin 16 side, and the opening 21a on the rear cabin 21 side are connected by erecting a tunnel shape at the front and rear, respectively.

[0066] The bellows sheet unit 32 is composed of a tunnel-shaped bellows sheet reinforcement frame 33 (not shown) and a bellows sheet 34, and is connected by erecting an opening 11b on the center cabin 11 side, an opening 16a on the front cabin 16 side, and an opening 21a on the rear cabin 21 side in a tunnel-like manner at the front and rear, respectively.

[0067] The bellows sheet reinforcing framework 33 (not shown) serves to reinforce the bellows sheet 34, and is provided in a state in which it supports the bellows sheet 34 from the inside.

[0068] The bellows sheet 34 is attached and fixed to the inside of the opening 11ba on the center cabin 11 side, the opening 16a on the front cabin 16 side, and the opening 21a on the rear cabin 21 side, and is formed of a bellows-shaped canvas sheet of a predetermined length that is connected in a tunnel-like shape.

[0069] FIG. 5 is an explanatory diagram showing another state of use of the camper trailer of the present invention. FIG. 5(a) is an explanatory diagram showing a state in which the rear cabin 21 of the camping trailer 10 of the present invention has been slid rearward. (1) The connection lock device 25 and the slide movement lock device (not shown) that connect the center cabin 11 and the rear cabin 21 are released. (2) After the sliding movement auxiliary wheels 20 of the front cabin 16 are lowered and locked, the sliding movement auxiliary wheels 20 of the rear cabin 21 are lowered and the pull-out handle 24 is grasped to move the rear cabin 21 rearward. (3) The slide movement locking device (not shown) connecting the center cabin 11 and the rear cabin 21 and the locking device of the slide movement auxiliary wheels 20 of the rear cabin 21 are locked. (4) The bellows hood sheet 28 equipped with a bellows sheet reinforcing frame 33 (not shown) is stretched to cover the center cabin 11 and the front cabin 16 in a tunnel-like shape and connect them. (5) Place the necessary camping interior equipment in the interior space R.

[0070] FIG. 5(b) is an explanatory diagram showing a state in which both the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention have been slid and moved. The camping trailer 10 of the present invention has a front cabin 16 and a rear cabin 21 connected to the front and rear of a center cabin 11 equipped with running wheels 12, and the front cabin 16 and the rear cabin 21 are slid back and forth by a sliding movement means 15, thereby expanding the interior space R by extending the tunnel-shaped bellows sheet reinforcing frame 33 (not shown) of the bellows sheet unit 32 and the bellows sheet 34.

[0071] FIG. 6 is another explanatory cross-sectional view showing a state in which the front cabin and the rear cabin of the camping trailer of the present invention have been slid. FIG. 6(a) is an explanatory cross-sectional view showing a state in which the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention have been slid. The camping trailer 10 of the present invention has a front cabin 16 and a rear cabin 21 connected to the front and rear of a center cabin 11 equipped with running wheels 12, and is slidable in both the front and rear directions by the sliding movement means 15 of the center cabin 11, the first sliding movement means 18 of the front cabin 16, and the second sliding movement means 23 of the rear cabin 21, respectively, thereby expanding the interior space R by extending the tunnel-shaped bellows sheet reinforcing frame 33 (not shown) of the bellows sheet unit 32 and the bellows sheet 34.

[0072] FIG. 6(b) is an explanatory cross-sectional view showing a state in which the front cabin 16 and the rear cabin 21 of the camping trailer 10 of the present invention are slidably moved when in use. A flat floor panel 35 is laid on the floor surface of the expanded interior space R, and a plurality of flat sleeping beds 36 are arranged, completing the arrangement of fixtures and the layout suited to the intended use. EXAMPLES

[0073] FIG. 7 is an explanatory diagram showing another embodiment of the camper trailer of the present invention. FIG. 7(a) is an explanatory diagram showing the state in which the accordion seat unit 32 of the camping trailer 10 of the present invention is disposed at the front and the top seat unit 26 is disposed at the rear. FIG. 7(b) is an explanatory diagram showing the state in which the top sheet unit 26 of the camping trailer 10 of the present invention is disposed at the front and the accordion sheet unit 32 is disposed at the rear. The camping trailer 10 of the present invention is a camping trailer 10 in which a front cabin 16 and a rear cabin 21 are connected to the front and rear of a center cabin 11 equipped with an opening and closing door 13 and running wheels 12, and the interior space R can be expanded by sliding the front cabin 16 and the rear cabin 21 in both the forward and backward directions, respectively. The camping trailer 10 is composed of the center cabin 11, the front cabin 16, the rear cabin 21, a hood seat unit 26, and a bellows seat unit 32. The center cabin 11 is configured with a hollow box-shaped vehicle body 11a, the front and rear of which are fully open, and opening / closing doors 13 are provided on both sides of the vehicle body 11a, running wheels are provided on both sides of a lower body frame 14, and a slide movement means 15 is provided within the body frame 22, in which a first slide movement means 18 and a second slide movement means 23 are received. The front cabin 16 is formed in a shape that rises vertically from the floor surface of the body frame 22 within the overall height, width, and length of the entire trailer, expanding the interior space R. The front ceiling is formed in a semi-dome shape, a first sliding movement means 18 is provided within the body frame 17, a pull-out handle 24 is provided at the front portion, and a coupling towing device 19 and a sliding movement auxiliary wheel 20 are provided at the lower front portion. The rear cabin 21 rises vertically from the floor surface of the body frame 22 within the overall height, width and length of the trailer body so as to expand the interior space R, and the rear ceiling is formed in a semi-dome shape, a second sliding movement means 23 is provided within the body frame 22, and a pull-out handle 24 is provided at the rear portion. The canopy seat unit 26 is made up of a canopy seat reinforcement frame 27 and a canopy seat 28. The canopy seat reinforcement frame 27 is made of angle steel having a predetermined length and both ends machined into hooks that can be dropped into hook holes (not shown) in the front and rear openings 11b on the center cabin 11 side and in the openings 16a, 21a of the front cabin 16 and the rear cabin 21. When traveling, the canopy seat unit 26 can be removed and stored in the vehicle by bundling it up.When camping, at least three or more hoods are provided on the ceilings of the front cabin 16 and the rear cabin 21 to maintain a fixed distance between the center cabin 11, the front cabin 16, and the rear cabin 21. A rectangular hood sheet 28 with hood fastening holes 31 at both ends connects the opening 11b on the center cabin 11 side to either the opening 16a on the front cabin 16 side or the opening 21a on the rear cabin 21 side in a tunnel-like manner. The bellows sheet unit 32 is composed of a tunnel-shaped bellows sheet reinforcing frame 33 (not shown) and a bellows sheet 34, and connects the opening 11b on the center cabin 11 side to either the opening 16a on the front cabin 16 side or the opening 21a on the rear cabin 21 side where the hood sheet unit 26 is not installed in a tunnel-like manner.

[0074] The camping trailer 10 of the present invention can be configured to use the canopy sheet unit 26 and the accordion sheet unit 32 in a manner appropriate to the circumstances of use during camping. [Industrial Applicability]

[0075] The camping trailer of the present invention has a front cabin and a rear cabin connected to the front and rear of a center cabin equipped with an opening / closing door and running wheels, and the interior space can be expanded by sliding the front cabin and rear cabin in both the forward and backward directions, respectively.It is believed that the "camping trailer" of the present invention has extremely great industrial applicability. [Explanation of symbols]

[0076] 10. Camping Trailer 11 Center Cabin 11a vehicle body 11b opening 12 Running wheels 13 Opening and closing doors 14 Body frame 15 Slide movement means 16 Front Cabin 16a opening 17 Body frame 18 First slide movement means 19 Connected traction device 20 Sliding mobility aid wheels 21 Rear cabin 21a opening 22 Body frame 23 Second slide movement means 24 Drawer Handle 25 Connection lock device 26 Canopy seat unit 27 Top sheet reinforcement frame 28 Canopy sheet 30 Hood fastening twist fitting 31 Hood fastening hole 32 Bellows sheet unit 34 Bellows sheet 35 Flat Floor Panel 36 Sleeping Flat Bed 38 Peephole C Towing vehicle (private vehicle) R Interior space

Claims

1. A camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening and closing door and running wheels, and the interior space can be expanded by sliding the front cabin and the rear cabin in both the front and rear directions, The camping trailer is composed of a center cabin, a front cabin, a rear cabin, and a hood seat unit, The center cabin is a hollow box-shaped vehicle body whose front and rear are fully open, and both sides of the vehicle body are provided with doors that can be opened and closed, and running wheels are provided on both sides of a vehicle body frame at a lower portion, and a slide moving means is provided within the vehicle body frame for receiving a first slide moving means and a second slide moving means, The front cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the entire trailer so as to expand the interior space, and the front ceiling portion is formed in a semi-dome shape, and further includes a first sliding movement means within the vehicle body frame, a pull-out handle at the front portion, and a coupling towing device and sliding movement auxiliary wheels at the front lower portion, The rear cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the trailer body so as to expand the interior space, and the rear ceiling portion is formed in a semi-dome shape, and further, a second sliding movement means is provided within the vehicle body frame, a pull-out handle is provided on the rear portion, and sliding movement auxiliary wheels are provided on the lower rear portion, The canopy sheet unit is composed of a canopy sheet reinforcing frame and a canopy sheet, and the canopy sheet reinforcing frame is formed in a detachable shape by dropping an angle steel of a predetermined length with both ends machined into a hook shape into the front and rear openings on the center cabin side and into hook holes opened in the openings of the center cabin and the rear cabin, so that it can be removed and stored inside the vehicle when traveling, and when camping, at least three or more hooks are provided on the ceiling parts of the front cabin and the rear cabin to maintain a fixed distance between the center cabin, the front cabin and the rear cabin, and further, a single rectangular canopy sheet with canopy fastening holes on both ends connects the opening on the center cabin side to the opening on the front cabin side and the opening on the rear cabin side in a tunnel-like manner at the front and rear of the camping trailer.

2. A camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening and closing door and running wheels, and the interior space can be expanded by sliding the front cabin and the rear cabin in both the front and rear directions, The camping trailer is composed of a center cabin, a front cabin, a rear cabin, and a bellows seat unit, The center cabin is a hollow box-shaped vehicle body whose front and rear are fully open, and which has opening and closing doors on both sides of the vehicle body, and a vehicle body frame at a lower portion, both sides of which are provided with running wheels, and a slide moving means for receiving a first slide moving means and a second slide moving means is provided within the vehicle body frame, The front cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the entire trailer so as to expand the interior space, and the front ceiling portion is formed in a semi-dome shape, and further includes a first sliding movement means within the vehicle body frame, a pull-out handle at the front portion, and a coupling towing device and sliding movement auxiliary wheels at the front lower portion, The rear cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the trailer body so as to expand the interior space, and the rear ceiling portion is formed in a semi-dome shape, and further, a second sliding movement means is provided within the vehicle body frame, a pull-out handle is provided on the rear portion, and sliding movement auxiliary wheels are provided on the lower rear portion, This camping trailer is characterized in that the accordion sheet unit is composed of a tunnel-shaped accordion sheet reinforcing frame and a accordion sheet, and the opening on the center cabin side, the opening on the front cabin side, and the opening on the rear cabin side are connected in a tunnel-like manner at the front and rear.

3. A camping trailer in which a front cabin and a rear cabin are connected to the front and rear of a center cabin equipped with an opening and closing door and running wheels, and the interior space can be expanded by sliding the front cabin and the rear cabin in both the front and rear directions, The camping trailer is composed of a center cabin, a front cabin, a rear cabin, a hood seat unit, and a bellows seat unit, The center cabin is a hollow box-shaped vehicle body whose front and rear are fully open, and both sides of the vehicle body are provided with doors that can be opened and closed, and running wheels are provided on both sides of a vehicle body frame at a lower portion, and a slide moving means is provided within the vehicle body frame for receiving a first slide moving means and a second slide moving means, The front cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the entire trailer so as to expand the interior space, and the front ceiling portion is formed in a semi-dome shape, and further includes a first sliding movement means within the vehicle body frame, a pull-out handle at the front portion, and a coupling towing device and sliding movement auxiliary wheels at the front lower portion, The rear cabin is formed in a shape that rises vertically from the floor surface of the vehicle body frame within the overall height, width and length of the trailer body so as to expand the interior space, and the rear ceiling portion is formed in a semi-dome shape, and further, a second sliding movement means is provided within the vehicle body frame, a pull-out handle is provided on the rear portion, and sliding movement auxiliary wheels are provided on the lower rear portion, The canopy sheet unit is composed of a canopy sheet reinforcing frame and a canopy sheet. The canopy sheet reinforcing frame is made of angle steel having a predetermined length and both ends machined into a hook shape, which is detachably fitted into the front and rear openings on the center cabin side and into the front cabin and rear cabin or openings, so that it can be removed and stored in the vehicle while traveling, and when camping, at least three or more canopies are provided on the ceilings of the front cabin and the rear cabin, so that the distance between the center cabin and the front cabin and the rear cabin is kept fixed. Furthermore, the opening on the center cabin side and either the opening on the front cabin side or the opening on the rear cabin side are connected in a tunnel shape by a single rectangular canopy sheet with canopy fastening holes on both ends, The accordion sheet unit is composed of a tunnel-shaped accordion sheet reinforcing framework and a accordion sheet, and is connected in a tunnel-like manner to the opening on the center cabin side and either the opening on the front cabin side or the opening on the rear cabin side, on which the canopy sheet unit is not installed.

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