Expansion structure of motor caravan

Abstract

The utility model discloses an expansion structure of a motor caravan. The expansion structure is used for improving the flexibility and convenience of an expansion cabin. The device comprises a driving assembly, a first cross beam, a second cross beam and a synchronizing shaft, the first cross beam is parallel to the second cross beam; the driving assembly is connected with the first cross beam; the driving assembly is in transmission connection with the synchronizing shaft; the synchronizing shaft is in transmission connection with the first cross beam and the second cross beam; the driving assembly is used for driving the synchronizing shaft to rotate, and the synchronizing shaft is used for driving the first cross beam and the second cross beam to conduct synchronous linear motion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of recreational vehicles, and particularly relates to an expansion structure of a recreational vehicle. BACKGROUND

[0002] With the development of economy and the improvement of people's living standards, the demand for tourism is increasingly diversified and personalized. Traditional tourism methods such as staying in hotels and group tours gradually cannot fully meet the pursuit of freedom and depth experience of some people. At the same time, with the continuous progress of automobile industry technology, the manufacturing process and chassis performance of vehicles have made a qualitative leap, and the recreational vehicle combining transportation and accommodation functions has emerged as the times require. It enables people to be as comfortable as at home during travel, freely arrange travel and stay, enjoy convenient life facilities while being close to nature, and cater to people's psychological desire for freedom and flexible travel lifestyle.

[0003] Since the recreational vehicle combines transportation and accommodation functions, the interior space of the recreational vehicle is limited. In order to make the recreational vehicle environment more comfortable, an expansion cabin is usually arranged on the side or tail of the recreational vehicle cabin to realize the space expansion of the recreational vehicle.

[0004] However, the expansion cabin in the prior art usually needs manual operation to expand or recover the expansion cabin, which is not conducive to operation when the expansion cabin is large, is not conducive to users with less strength, and the expansion and recovery speed is slow, the flexibility and convenience of the expansion cabin are insufficient, and the user demand cannot be met. CONTENT OF THE INVENTION

[0005] In order to solve the above technical problems, the present application provides an expansion structure of a recreational vehicle, comprising: a driving assembly, a first cross beam, a second cross beam and a synchronous shaft.

[0006] The first cross beam and the second cross beam are arranged in parallel.

[0007] The driving assembly is connected with the first cross beam.

[0008] The driving assembly is in transmission connection with the synchronous shaft.

[0009] The synchronous shaft is in transmission connection with the first cross beam and the second cross beam.

[0010] The driving assembly is used to drive the synchronous shaft to rotate, and the synchronous shaft is used to drive the first cross beam and the second cross beam to perform synchronous linear motion.

[0011] Optionally, the synchronous shaft is in transmission connection with the first cross beam through a first transmission structure.

[0012] The first transmission structure comprises a first gear and a first rack.

[0013] The first gear is connected to one end of the synchronization shaft;

[0014] The first rack is connected to the first cross beam;

[0015] The first rack is engaged with the first gear.

[0016] Optionally, the synchronization shaft is drivingly connected with the second cross beam through a second transmission structure;

[0017] The second transmission structure comprises a second gear and a second rack;

[0018] The second gear is connected to the other end of the synchronization shaft;

[0019] The second rack is connected to the second cross beam;

[0020] The second rack is engaged with the second gear.

[0021] Optionally, the driving assembly comprises a motor, a worm gear and a worm;

[0022] The worm is connected with a motor shaft of the motor;

[0023] The worm is engaged with the worm gear;

[0024] The worm gear is fixed with the synchronization shaft, and when the worm gear rotates, the synchronization shaft is driven to rotate.

[0025] Optionally, the first cross beam comprises a fixed rod, a sliding tube and a sliding piece;

[0026] The fixed rod is slidingly connected with the sliding tube;

[0027] The fixed rod is provided at the bottom with a sliding piece, and the sliding piece is used to assist the sliding tube to slide linearly along the fixed rod.

[0028] Optionally, the driving assembly is connected with the sliding tube of the first cross beam through a fixing piece.

[0029] Optionally, one end of the fixed rod is provided with a limiting part, and the limiting part is used to prevent the sliding tube from overextending.

[0030] Optionally, the other end of the fixed rod is provided with a connecting assembly, and the connecting assembly is used to connect the expansion structure with a vehicle body of a recreational vehicle.

[0031] Optionally, the sliding tube is provided with a limiting ring, and the limiting ring is used to prevent the sliding tube from being separated from the fixed rod.

[0032] Optionally, one end of the sliding tube is provided with a push plate.

[0033] From the above technical solutions, the present application has the following advantages:

[0034] 1. The expansion structure driven by the driving assembly can efficiently realize the extension and retraction of the expansion structure, and is convenient for user operation, improving the flexibility and convenience of use.

[0035] 2. The expansion structure is provided with a synchronous shaft, which can drive the second cross beam to move synchronously when the driving assembly drives the first cross beam, so that the expansion structure can be stably extended or retracted as a whole, improving the stability and reliability of the expansion structure during use. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 An embodiment structure schematic diagram of the expansion structure of the recreational vehicle provided by the present application is shown in the figure;

[0037] Figure 2 An embodiment structure schematic diagram of the expansion structure of the recreational vehicle provided by the present application is shown in the figure;

[0038] Figure 3 An embodiment structure schematic diagram of the expansion structure of the recreational vehicle provided by the present application is shown in the figure;

[0039] Figure 4 An embodiment structure schematic diagram of the expansion structure of the recreational vehicle provided by the present application is shown in the figure;

[0040] Figure 5 An embodiment structure schematic diagram of the expansion structure of the recreational vehicle provided by the present application is shown in the figure. DETAILED DESCRIPTION

[0041] In order to solve the above technical problems, the present application provides an expansion structure of a recreational vehicle, which is used to improve the flexibility and convenience of the expansion cabin.

[0042] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to illustrate the relative positional relationship between the components or constituent parts, and do not particularly limit the specific installation orientation of the components or constituent parts.

[0043] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For ordinary skilled persons in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0044] In addition, the terms "mounting", "arrangement", "provided with", "connected", "linked" should be interpreted broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the structure, proportion, size, etc. drawn in the drawings attached in the present application are only used to cooperate with the disclosed content in the specification, to be understood and read by those skilled in the art, and do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the present application, still falls within the scope of the technical content disclosed by the present application.

[0046] The technical solutions in the present application will be described clearly and completely in the following, combined with the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] Please refer to Figure 1 The present application first provides an embodiment of the expansion structure of the travel trailer, which comprises:

[0048] The driving assembly 1, the first cross beam 2, the second cross beam 3 and the synchronous shaft 4;

[0049] The first cross beam 2 and the second cross beam 3 are arranged in parallel;

[0050] The driving assembly 1 is connected with the first cross beam 2;

[0051] The driving assembly 1 is drivingly connected with the synchronous shaft 4;

[0052] The synchronous shaft 4 is drivingly connected with the first cross beam 2, and the synchronous shaft 4 is drivingly connected with the second cross beam 3;

[0053] The driving assembly 1 is used to drive the synchronous shaft 4 to rotate, and the synchronous shaft 4 is used to drive the first cross beam 2 and the second cross beam 3 to move synchronously in a straight line.

[0054] Drive assembly 1: Drive assembly 1 is the power source to realize the expansion of the cabin and recovery, drive assembly 1 is connected to the first beam 2, and is in driving connection with the synchronous shaft 4, so as to realize the power driving of the synchronous shaft 4, drive the first beam 2 to move linearly. This power driving mode can improve the convenience of the expansion structure.

[0055] First beam 2: The first beam 2 is a slidable and retractable component, which can be extended or retracted by the driving synchronous shaft 4 of the drive assembly 1, so as to realize the expansion and recovery of the expansion cabin.

[0056] Second beam 3: The second beam 3 has the same structure as the first beam 2, which is extended or retracted by the driving synchronous shaft 4 of the drive assembly 1, and cooperates with the first beam 2 to stably expand and recover the expansion cabin.

[0057] Synchronous shaft 4: The synchronous shaft 4 is a mechanical structure for connecting and driving the first beam 2 and the second beam 3, which is usually made of metal material with certain strength and toughness, and can withstand large torque and bending stress, such as alloy steel.

[0058] The working principle of the whole structure is: when the drive assembly 1 starts, the driving synchronous shaft 4 rotates, and the first beam 2 close to the drive assembly 1 moves linearly, and the second beam 3 is driven by the synchronous shaft 4 to move linearly synchronously with the first beam 2. The expansion structure can be extended or retracted, and the expansion cabin can be expanded and recovered.

[0059] In this embodiment, the expansion structure driven by the drive assembly 1 can efficiently realize the extension and retraction of the expansion mechanism, and is convenient for user operation, and improves the flexibility and convenience of use. The synchronous shaft 4 is provided in the expansion structure, which can drive the second beam 3 to move linearly synchronously with the first beam 2 when the drive assembly 1 drives the first beam 2, so that the expansion structure can stably extend or retract as a whole, and the stability and reliability of the expansion structure in use are improved.

[0060] Please refer to Figure 4 and Figure 5 In an optional embodiment, the synchronous shaft 4 is in driving connection with the first beam 2 through the first transmission structure 5; the first transmission structure 5 includes a first gear 51 and a first rack 52; the first gear 51 is connected to one end of the synchronous shaft 4; the first rack 52 is connected to the first beam 2; the first rack 51 is in engagement with the first gear 52.

[0061] The synchronous shaft 4 is in driving connection with the second beam 3 through the second transmission structure 6; the second transmission structure 6 includes a second gear 61 and a second rack 62; the second gear 61 is connected to the other end of the synchronous shaft 4; the second rack 62 is connected to the second beam 3; the second rack 61 is in engagement with the second gear 61.

[0062] The working principle of the whole structure is that the first gear 51 and the second gear 61 are arranged at both ends of the synchronous shaft 4, and are respectively engaged with the first rack 52 on the first cross beam 2 and the second rack 62 of the second cross beam 3, and the first gear 51 and the second gear 61 are fixed to the outside of the first cross beam 2 and the second cross beam 3 through the fixing sleeve respectively. When the synchronous shaft 4 rotates, the first gear 51 and the second gear 61 at both ends rotate synchronously, and are respectively matched with the first rack 52 and the second rack 62 to perform linear displacement, so that the first cross beam 2 and the second cross beam 3 are synchronously extended or retracted.

[0063] In this embodiment, the meshing mode of the gear and the rack is adopted to synchronously drive the first cross beam 2 and the second cross beam 3 by the synchronous shaft 4. This simple meshing mode can control the movement direction and distance, and can also save the assembly space and be easy to install. Moreover, the energy loss of the gear and the rack is small in the meshing process, the power can be effectively transmitted, and the response speed is fast. At the same time, the bearing capacity of the gear and the rack is strong, and the transmission capacity can also be played when facing a larger expansion cabin.

[0064] In this application, the implementation mode of the driving assembly 1 driving the synchronous shaft 4 can adopt various technologies and mechanical structures, such as belt transmission, chain transmission and worm transmission. Figure 2 and Figure 3 , a preferred embodiment is provided in this application, which comprises:

[0065] The driving assembly 1 comprises a motor 11, a worm gear 12 and a worm 13; the worm 13 is connected with a motor shaft 14 of the motor 11; the worm 13 is engaged with the worm gear 12; the worm gear 12 is fixed with the synchronous shaft 4, and when the worm gear 12 rotates, the synchronous shaft 4 is driven to rotate.

[0066] Motor 11: The motor 11 is an electromagnetic device that realizes the conversion or transmission of electric energy according to the electromagnetic induction law, which converts electric energy into mechanical energy to drive the motor shaft 14 to rotate.

[0067] Worm gear 12: The worm gear 12 is a circular wheel engaged with the worm 13.

[0068] Worm 13: The worm 13 is a spiral rod-shaped part connected with the motor shaft 14 of the motor 11. The worm 13 is engaged with the worm gear 12 through its spiral shape, and when the motor 11 starts, the worm gear 12 is driven to rotate by the worm 13.

[0069] In this embodiment, when the motor 11 drives the worm 13 to rotate, the worm gear 12 engaged with the worm 13 is driven to rotate, the synchronous shaft 4 fixed on the worm gear 12 is rotated, and then the first cross beam 2 and the second cross beam 3 are synchronously linearly moved, so as to realize the expansion and recovery of the expansion cabin. Through the combination of the worm gear 12, the worm 13 and the synchronous shaft 4, the expansion structure has good power, and the structure of the whole driving assembly 1 is simple and easy to realize. Since the structure has good thrust, only one driving assembly 1 can be used as a power source, which can ensure the normal operation of the whole expansion structure and save production cost.

[0070] Please further refer to Figure 4 and Figure 5 In an optional embodiment, the first cross beam 2 comprises a fixed rod 21, a sliding tube 22 and a sliding piece; the fixed rod 21 is in sliding connection with the sliding tube 22; the fixed rod 21 is provided at the bottom with the sliding piece for assisting the sliding tube 22 to slide linearly along the fixed rod 21.

[0071] The first cross beam 2 is a structure capable of realizing linear sliding expansion and contraction, and the second cross beam 3 has the same structure as the first cross beam 2 and is composed of the fixed rod 21 and the sliding tube 22. When the driving assembly drives the synchronous shaft 4, the sliding tube 22 of the first cross beam 2 slides linearly around the fixed rod 21 of the first cross beam 2 to generate linear displacement, and the sliding tube 22 of the second cross beam 3 moves synchronously with the sliding tube 22 of the first cross beam 2 through the synchronous shaft 4, so as to make the expansion structure extend or retract, thereby realizing the expansion and recovery of the expansion cabin. In order to make the sliding structure more stable, the sliding piece is arranged at the bottom of the fixed rod 21 and located between the sliding tube 22 and the fixed rod 21, and when the sliding tube 22 slides, the sliding piece assists the sliding tube 22 to smoothly perform linear displacement, so that the extension or retraction of the whole expansion structure is more stable.

[0072] In some specific embodiments, the driving assembly is connected with the sliding tube 22 of the first cross beam 2 through the fixing piece 7; the fixed rod 21 is provided at one end with the limiting part 8 for preventing the sliding tube 22 from excessively extending; and the sliding tube 22 is provided with the limiting ring 9 for preventing the sliding tube 22 from being separated from the fixed rod 21.

[0073] The driving assembly 1 is arranged on the first cross beam 2 through the fixing part 7, and can better drive the sliding pipe 22 of the first cross beam 2 to slide through the synchronous shaft 4. When the sliding pipe 22 moves forward and backward on the fixed rod 21, in order to prevent the sliding pipe 22 from being excessively stretched out and separated from the fixed rod 21, a limiting part 8 is arranged on the fixed rod 21, which prevents the sliding pipe 22 from being excessively stretched out when the sliding pipe 22 slides to the end of the fixed rod 21. At the same time, in order to prevent the sliding pipe 22 from being displaced upward and downward due to gravity or other influences and separated from the fixed rod 21, a limiting ring 9 is sleeved on the sliding pipe 22, which limits the sliding of the sliding pipe 22 on the fixed rod 21; the other end of the fixed rod 21 is provided with a connecting assembly 10, which is used for connecting the expansion structure and the vehicle body of the recreational vehicle.

[0074] In the embodiment, the sliding telescopic structure is adopted to enable the expansion cabin to flexibly realize the unfolding or recycling operation, and meet the space demand change in different scenes. The connection of the driving assembly 1 and the sliding pipe 22 of the first cross beam 2 guarantees the stability of power transmission. Moreover, the limiting part 8 on the fixed rod 21 and the limiting ring 9 on the sliding pipe 22 can prevent the sliding pipe 22 from being excessively stretched out or separated from the fixed rod 21 due to upward and downward displacement during movement, thereby enhancing the safety and stability of the entire expansion structure. The connecting assembly 10 at the other end of the fixed rod 21 connects the vehicle body of the recreational vehicle, so that the expansion structure can be closely connected with the recreational vehicle, and the integrity and stability of the expansion cabin and the recreational vehicle are improved.

[0075] In an optional embodiment, one end of the sliding pipe 22 is provided with a push plate, which can better contact and push the expansion cabin to unfold when the expansion structure is stretched out, thereby facilitating the realization of the expansion space function and enhancing the practicability of the expansion structure in actual recreational vehicle expansion application.

[0076] It should be noted that the above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An expansion structure for a recreational vehicle, comprising: The utility model relates to a kind of drive assembly, first crossbeam, second crossbeam and synchronous shaft; The first crossbeam is arranged in parallel with the second crossbeam; The drive assembly is connected with the first crossbeam; The drive assembly is drivingly connected with the synchronous shaft; The synchronous shaft is drivingly connected with the first crossbeam, and the synchronous shaft is drivingly connected with the second crossbeam; The drive assembly is used to drive the synchronous shaft to rotate, and the synchronous shaft is used to drive the first crossbeam and the second crossbeam to move synchronously in a straight line. The synchronous shaft is drivingly connected with the first crossbeam by first transmission structure; 2. The expanded structure of claim 1, wherein The first transmission structure includes first gear and first rack; The first gear is connected at one end of the synchronous shaft; The first rack is connected on the first crossbeam; The first rack is engaged with the first gear. The synchronous shaft is drivingly connected with the second crossbeam by second transmission structure; 3. The expanded structure of claim 1, wherein The second transmission structure includes second gear and second rack; The second gear is connected at the other end of the synchronous shaft; The second rack is connected on the second crossbeam; The second rack is engaged with the second gear. The drive assembly includes motor, worm gear and worm gear; 4. The expanded structure of claim 1, wherein The worm gear is connected with motor shaft of the motor; The worm gear is engaged with the worm gear; The worm gear is fixed with the synchronous shaft, and when the worm gear rotates, the synchronous shaft is driven to rotate. The first crossbeam includes fixed rod, sliding tube and sliding piece; 5. The expanded structure of claim 1 wherein, The fixed rod is slidingly connected with the sliding tube; The fixed rod is provided with sliding piece at bottom, and the sliding piece is used to assist the sliding tube to slide linearly along the fixed rod. The drive assembly is connected with the sliding tube of the first crossbeam by fixing piece.

6. The expanded structure of claim 5, wherein One end of the fixed rod is provided with limiting portion, and the limiting portion is used to prevent the sliding tube from overextending.

7. The expanded structure of claim 5, wherein The other end of the fixed rod is provided with connecting assembly, and the connecting assembly is used to connect the expansion structure with the vehicle body of recreational vehicle.

8. The expanded structure of claim 5, wherein The sliding tube is provided with limiting ring, and the limiting ring is used to prevent the sliding tube from separating from the fixed rod.

9. The expanded structure of claim 5, wherein One end of the sliding tube is provided with push plate.

10. The expanded structure of claim 5, wherein ​

Images