Motor caravan expansion cabin connecting structure

Abstract

The utility model relates to the technical field of motor caravan expansion cabins, in particular to a motor caravan expansion cabin connecting structure, guide rails are arranged on two side walls of an expansion cabin, racks are connected onto the guide rails, an expansion mechanism is arranged on a main carriage body, the expansion mechanism comprises a driving motor, the driving motor is in transmission connection with a gear, and the gear is meshed with the racks. A connecting shell is arranged on the outer side of the expanding mechanism; a first connecting part and a second connecting part are arranged on the connecting piece in a spaced mode, the first connecting part and the second connecting part are arranged on different sides, the first connecting part is fixedly connected with the connecting shell, and the second connecting part is fixedly connected with the side wall of the main compartment body; after the expansion cabin retracts into the main compartment body, the outer side wall of the expansion cabin is flush with the side wall of the main compartment body; according to the utility model, after the expansion cabin retracts into the motor caravan carriage, the outer side wall of the expansion cabin is flush with the side wall of the motor caravan carriage, so that the motor caravan is more attractive; in the driving process, the motor caravan can be prevented from colliding with other vehicles, and meanwhile wind noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of caravan expansion cabins, in particular to a caravan expansion cabin connection structure. Background Art

[0002] A motorhome, also known as a recreational vehicle, abbreviated as RV, etc., is a combination of a house and a car designed to meet people's needs for travel, outdoor life and work. Figuratively speaking, it can be called a "mobile home" and is a fashionable product that realizes "traveling in life and living in travel". In recent years, with the rapid development of the motorhome industry, people's requirements for the utilization of motorhome space are constantly increasing. Therefore, most existing motorhomes are equipped with expansion compartments to expand the internal space.

[0003] For example, the new self-propelled C-type expansion caravan with application number CN202210707881.5 expands the space of the caravan through sliding cabins on both sides; wherein, the expansion compartment is generally slidably connected to the caravan body through an expansion mechanism, such as an expansion mechanism for a caravan with application number CN201510376996.0, the expansion mechanism generally includes a motor fixed in the caravan compartment, the motor transmission is connected with a gear, a guide rail is arranged on the expansion compartment, the guide rail is connected with a rack, and the gear and the rack are meshingly connected; when expansion is required, the motor drives the gear to rotate, and the gear drives the rack to move, so that the guide rail drives the extension and retraction of the expansion compartment through the movement of the rack, thereby realizing the change of the space inside the vehicle.

[0004] In the prior art, in order to prevent the expansion cabin from completely slipping off, the expansion compartment is limited, the length of the guide rail must be smaller than the overall thickness of the expansion compartment, and limiting parts must be set at the front and rear ends of the guide rail. As a result, the existing expansion compartment cannot be completely retracted into the caravan compartment. After the expansion compartment is retracted, the outer wall of the expansion compartment generally protrudes outward from the caravan compartment. This also results in that during the driving of the caravan, the protruding part will increase wind noise, and dust will easily enter through the gap, affecting the service life of the expansion mechanism. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a caravan expansion cabin connection structure with a flat outer side of the caravan after the expansion cabin is retracted.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A connection structure for an expansion cabin of a motorhome, wherein guide rails are arranged on the side walls of the expansion cabin, racks are connected to the guide rails, an expansion mechanism is arranged on the main cabin, the expansion mechanism comprises a drive motor, a gear is connected to the drive motor in transmission, the gear is meshed with the rack, a connection shell is arranged on the outside of the expansion mechanism; the structure also comprises a connection piece, a first connection part and a second connection part are arranged on the connection piece at intervals, and the first connection part and the second connection part are arranged on opposite sides, the first connection part is fixedly connected to the connection shell, and the second connection part is fixedly connected to the side wall of the main cabin; after the expansion cabin is retracted into the main cabin, the outer side wall of the expansion cabin is flush with the side wall of the main cabin.

[0008] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0009] Through the caravan expansion cabin connecting structure in the utility model, after the expansion cabin is retracted into the caravan compartment, the outer side wall of the expansion cabin is flush with the side wall of the caravan compartment, perfectly connecting the expansion cabin and the main compartment body, which is more beautiful; when the expansion area remains unchanged, the expansion cabin connected by the connecting structure in the utility model will not bulge outward, and during driving, it can prevent the caravan from colliding with other vehicles, while reducing wind noise.

[0010] As a preferred embodiment, a further technical solution of the utility model is:

[0011] Preferably, the connecting member includes a connecting main board, the cross-section of the connecting main board is Z-shaped, and the connecting main board is composed of a vertical plate, a first horizontal plate and a second horizontal plate; it also includes an L-shaped mounting plate, one end of the L-shaped mounting plate is connected to the first horizontal plate, and the other end is connected to the vertical plate; it also includes an extension plate, the extension plate is connected to the side of the vertical plate close to the second horizontal plate and is arranged perpendicular to the second horizontal plate; the first horizontal plate and the L-shaped mounting plate constitute a first connecting part, and the extension plate and the second horizontal plate constitute a second connecting part.

[0012] Preferably, a reinforcing rib is connected between the second horizontal plate and the vertical plate, thereby ensuring the structural strength of the connecting piece and improving the service life of the connecting piece.

[0013] Preferably, a C-shaped groove is provided on one side of the connecting shell, and the expansion mechanism is installed in the C-shaped groove, and a connecting plate is provided on the other side, and the connecting plate is horizontally arranged; the upper side wall of the C-shaped groove is fixedly connected to a section of the first horizontal plate exposed on the L-shaped mounting plate, and the connecting plate is fixedly connected to the horizontal part of the L-shaped mounting plate.

[0014] Preferably, sealing strips are provided on the front and rear sides of the C-shaped groove to prevent dust from entering through the gap, thereby protecting the expansion mechanism and increasing the service life of the expansion mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the caravan expansion cabin connection structure in the embodiment of the utility model;

[0016] Figure 2 It is another angle schematic diagram of the caravan expansion cabin connection structure in the embodiment of the utility model;

[0017] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 It is a schematic diagram of the specific structure of the connecting piece in the embodiment of the utility model;

[0019] Figure 5 It is a top view structural schematic diagram of the connecting member in the embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of the top view of the structure of the caravan expansion cabin connection structure in the utility model embodiment;

[0021] Figure 7 It is a schematic diagram of the overall structure when the expansion cabin is completely pulled out of the main cabin in the embodiment of the utility model;

[0022] Figure 8 It is a structural schematic diagram of the sealing node of the sealing strip section when the expansion cabin is completely pulled out of the main cabin in the embodiment of the utility model.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Expansion cabin; 101. Side wall of expansion cabin; 102. External side wall of expansion cabin; 2. Guide rail; 3. Rack; 4. Main cabin; 5. Driving motor; 6. Connecting shell; 601. C-shaped groove; 602. Connecting plate; 7. Connecting piece; 701. Vertical plate; 702. First horizontal plate; 703. Second horizontal plate; 704. Extension plate; 705. L-shaped mounting plate; 706. Reinforcing rib; 8. Sealing strip; 9. Limiting plate. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0025] like Figure 1 to Figure 6As shown, the present embodiment provides a connection structure for an expansion cabin of a motorhome, guide rails 2 are arranged on the expansion cabin side walls 101 on both sides of the expansion cabin 1, racks 3 are connected to the guide rails 2, and an expansion mechanism is arranged on the main compartment 4, the expansion mechanism includes a driving motor 5, the driving motor 5 is transmission-connected with a gear, and the gear is meshed with the rack 3; the output end of the driving motor 5 rotates, driving the gear to rotate, the gear drives the rack 3 to move, and the rack 3 drives the guide rail 2 to move, so as to realize the extension and retraction of the expansion cabin 1, and then realize the change of the space inside the vehicle; a connecting shell 6 is arranged on the outside of the expansion mechanism; it also includes a connecting member 7, a first connecting part and a second connecting part are arranged at intervals on the connecting member 7, and the first connecting part and the second connecting part are arranged on opposite sides, the first connecting part is fixedly connected to the connecting shell 6, and the second connecting part is fixedly connected to the side wall of the main compartment 4; after the expansion cabin 1 is retracted into the main compartment 4, the outer wall of the expansion cabin 1 is flush with the side wall of the main compartment 4.

[0026] Specifically, in an expansion mechanism for a motorhome with application number CN201510376996.0, the transmission connection structure between the drive motor 5 and the gear is that the gear is connected to the shaft through a keyway, a bearing is sleeved on the outside of the shaft, and both ends of the bearing are fixed on a support seat. At the same time, the shaft is connected to the drive motor 5 through a coupling, the support seat is fixed in the connecting shell 6, and the drive motor 5 is fixed in the connecting shell 6 through a motor seat.

[0027] like Figure 4 , Figure 5 As shown, the connecting member 7 includes a connecting main board, the cross-section of the connecting main board is Z-shaped, and the connecting main board is composed of a vertical plate 701, a first horizontal plate 702 and a second horizontal plate 703; it also includes an L-shaped mounting plate 705L, one end of the L-shaped mounting plate 705L is connected to the first horizontal plate 702, and the other end is connected to the vertical plate 701; it also includes an extension plate 704, the extension plate 704 is connected to the side of the vertical plate 701 close to the second horizontal plate 703 and is arranged perpendicular to the second horizontal plate 703; the first horizontal plate 702 and the L-shaped mounting plate 705L constitute a first connecting part, and the extension plate 704 and the second horizontal plate 703 constitute a second connecting part; specifically, the connecting member 7 is formed by extrusion of an aluminum alloy profile, and is light in weight and high in strength.

[0028] In order to improve the structural strength of the connecting member 7 , a reinforcing rib 706 is connected between the second horizontal plate 703 and the vertical plate 701 .

[0029] like Figure 6 As shown, a C-shaped groove 601 is provided on one side of the connecting shell 6, and the expansion mechanism is installed in the C-shaped groove 601, and a connecting plate 602 is provided on the other side, and the connecting plate 602 is horizontally arranged; the upper side wall of the C-shaped groove 601 and a section of the first horizontal plate 702 exposed on the L-shaped mounting plate 705L are fixedly connected by self-tapping screws, and the connecting plate 602 and the horizontal part of the L-shaped mounting plate 705L are fixedly connected by rivets.

[0030] The C-shaped groove 601 is provided with sealing strips 8 on both sides; Figure 7 , Figure 8 As shown, after the expansion cabin 1 is completely pulled out of the main cabin 4, the rear sealing strip 8 is tightly fitted with the rear limit plate 9 of the expansion cabin 1 to play a sealing role; Figure 3 After the expansion cabin 1 is retracted into the main compartment 4, the front sealing strip 8 is tightly fitted with the outer wall of the expansion cabin 1, which plays a sealing role, prevents dust from entering, protects the expansion mechanism, and increases the service life of the expansion mechanism.

[0031] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A caravan expansion cabin connection structure, wherein guide rails are arranged on the side walls of the expansion cabin, racks are connected to the guide rails, an expansion mechanism is arranged on the main cabin, the expansion mechanism includes a drive motor, the drive motor is connected to a gear, the gear is meshed with the rack, and the characteristics are: A connecting shell is arranged on the outside of the expansion mechanism; it also includes a connecting member, on which a first connecting portion and a second connecting portion are arranged at intervals, and the first connecting portion and the second connecting portion are arranged on opposite sides, the first connecting portion is fixedly connected to the connecting shell, and the second connecting portion is fixedly connected to the side wall of the main compartment; after the expansion cabin is retracted into the main compartment, the outer side wall of the expansion cabin is flush with the side wall of the main compartment.

2. The caravan expansion cabin connection structure according to claim 1, characterized in that: The connecting part includes a connecting main board, the cross-section of the connecting main board is Z-shaped, and the connecting main board is composed of a vertical plate, a first horizontal plate and a second horizontal plate; it also includes an L-shaped mounting plate, one end of the L-shaped mounting plate is connected to the first horizontal plate, and the other end is connected to the vertical plate; it also includes an extension plate, which is connected to the side of the vertical plate close to the second horizontal plate and is arranged perpendicular to the second horizontal plate; the first horizontal plate and the L-shaped mounting plate constitute a first connecting part, and the extension plate and the second horizontal plate constitute a second connecting part.

3. The caravan expansion cabin connection structure according to claim 2, characterized in that: A reinforcing rib is connected between the second horizontal plate and the vertical plate.

4. The caravan expansion cabin connection structure according to claim 2, characterized in that: A C-shaped groove is provided on one side of the connecting shell, and the expansion mechanism is installed in the C-shaped groove. A connecting plate is provided on the other side, and the connecting plate is horizontally arranged. The upper side wall of the C-shaped groove is fixedly connected to a section of the first horizontal plate exposed on the L-shaped mounting plate, and the connecting plate is fixedly connected to the horizontal part of the L-shaped mounting plate.

5. The caravan expansion cabin connection structure according to claim 1, characterized in that: Sealing strips are provided on the front and rear sides of the C-shaped groove.

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