Multi-stage lifting structure and motor home lifting platform

Abstract

The utility model discloses a multi-stage lifting structure and a motor home lifting platform. A multi-stage lifting structure comprises a lifting assembly and a shell. The first driving device is connected with and drives the connecting rod assembly to ascend and descend, and the second driving device is connected with and drives the platform of the limiting fence on the second driving rod to move. The connecting rod assembly is of a three-layer telescopic rod structure. The motor home lifting platform comprises the multi-stage lifting structure. According to the lifting assembly, the utilization rate of the longitudinal space of the motor home can be increased, and the height of the motor home can be increased according to different requirements.

Description

TECHNICAL FIELD

[0001] The present scheme relates to the field of lifting technology, in particular to a multi-stage lifting structure and a motor home lifting platform. BACKGROUND

[0002] In recent years, with the improvement of living standards, motor homes have become the first choice for long-distance self-driving tourists; motor homes are also known as "mobile homes", and the internal facilities are complete, in order to balance the entertainment and rest functions, the utilization of the internal space of the motor home carriage is very important.

[0003] At present, in order to maintain the stability of the vehicle body, the longitudinal space is limited and the utilization rate is low.

[0004] Therefore, a lifting structure is needed to improve the utilization rate of the longitudinal space of the motor home and increase the height of the motor home according to different needs. SUMMARY

[0005] In order to solve the above problems, the present scheme provides a multi-stage lifting structure and a motor home lifting platform.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present scheme is: a multi-stage lifting structure, comprising a lifting assembly and a shell;

[0007] The lifting assembly is connected and driven by the first driving device to lift the connecting rod assembly, and the second driving device is connected and driven to displace the platform of the limiting fence; the connecting rod assembly is a three-layer telescopic rod structure.

[0008] Further, the connecting rod assembly comprises a first driving rod, a driven lifting rod and a main rod from top to bottom.

[0009] The outer thread of the first driving rod is engaged with the driving end of the first driving device, and the other end is provided with a first protruding part limited in the driven lifting rod, and the first protruding part is attached to the inside of the driven lifting rod.

[0010] Further, the first driving device is connected to the top plate at the non-driving end, and the outer periphery of the driving end is connected and drives the first shell to lift.

[0011] Further, the driven lifting rod is provided with an outer thread and a second protruding part at one end on the outer side, and is smooth and provided with an inner thread at one end on the inside.

[0012] Further, the bottom of the main rod is fixed on the second driving device, the outer rod body is smooth, and the internal structure is the same as that of the driven lifting rod.

[0013] Further, the driving end of the second driving device is engaged with the second driving rod, the shaft sleeve on the second platform is engaged on the rod body of the second driving rod, and the second platform is also sleeved on the connecting rod assembly.

[0014] Further, the second driving device bottom is fixed with a bottom plate, and the bottom plate is connected with the third shell.

[0015] To achieve the above object, the technical scheme adopted by the present application is as follows: a motor home lifting platform comprising the multi-stage lifting structure.

[0016] Further, the multi-stage lifting structure is provided with a top plate fixed with a top cover, and the first platform is limited in the recess of the fence assembly.

[0017] Further, the fence assembly is provided with a connector male end at the inner bottom and a connector female end at the outer top, and comprises a first fence, a second fence and a third fence which are limited one above another.

[0018] In summary, the present application has the following advantages:

[0019] The lifting assembly provided by the present application can improve the utilization rate of the longitudinal space of the motor home and increase the height of the motor home according to different requirements. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the initial state of the multi-stage lifting structure;

[0021] Figure 2 is a schematic view of the multi-stage lifting structure rising to the maximum stroke;

[0022] Figure 3 is a schematic view of the initial state of the connecting rod assembly;

[0023] Figure 4 is a schematic view of the connecting rod assembly rising to the maximum stroke;

[0024] Figure 5 is a schematic view of the first driving rod;

[0025] Figure 6 is a sectional view of the driven lifting rod;

[0026] Figure 7 is a schematic view of the initial state of the motor home lifting platform;

[0027] Figure 8 is a schematic view of the top cover of the motor home lifting platform rising to the maximum stroke;

[0028] Figure 9 is a schematic view of the motor home lifting platform when the second fence is exposed;

[0029] Figure 10 is a schematic view of the motor home lifting platform when the third fence is exposed;

[0030] Figure 11 is a schematic view of the fence assembly;

[0031] Figure 12 is a schematic view of the connector sub-end and the connector female end;

[0032] wherein:

[0033] 100, lifting assembly; 110, linkage assembly; 111, first drive rod; 1111, first protrusion; 112, driven lifting rod; 1121, second protrusion; 113, main rod; 120, first drive device; 130, second drive device; 140, second drive rod;

[0034] 200, housing; 210, first housing; 211, top plate; 220, second housing; 221, first platform; 222, second platform; 230, third housing; 231, bottom plate; 232, third platform;

[0035] 300, top cover;

[0036] 400, fence assembly; 401, recess; 402, connector sub-end; 403, connector female end; 410, first fence; 420, second fence; 430, third fence. DETAILED DESCRIPTION

[0037] The present application will be further described below in conjunction with the accompanying drawings and examples:

[0038] Example 1:

[0039] A multi-stage lifting structure, as shown in Figures 1-12 , includes a lifting assembly 100 driving a housing 200 to move up and down.

[0040] The lifting assembly 100 includes a first drive device 120 and a second drive device 130 connected at both ends of a linkage assembly 110, the driving end of the first drive device 120 is connected and drives the linkage assembly 110 to move up and down, and the driving end of the second drive device 130 is connected and drives a second drive rod 140 to move the platform of the limiting fence.

[0041] The linkage assembly 110 is a three-layer telescopic rod structure, including a first drive rod 111, a driven lifting rod 112, and a main rod 113 from top to bottom.

[0042] One end of the first drive rod 111 is engaged with the driving end of the first drive device 120, and the other end is limited in the driven lifting rod 112, the outer side of the first drive rod 111 is provided with a first protrusion 1111, and the rest is provided with external threads, and the first protrusion 1111 is attached to the inside of the driven lifting rod 112.

[0043] The first protruding part 1111 limits the maximum stroke of the first driving rod 111 in the driven lifting rod 112, and increases the stability during movement.

[0044] The driven lifting rod 112 is provided with a second protruding part 1121 at one end, and the rest is externally threaded. The top of the other end is internally threaded, and the rest is smooth.

[0045] Specifically, when the first driving rod 111 overlaps the driven lifting rod 112, the external thread at the top of the first driving rod 111 engages with the internal thread at the top of the driven lifting rod 112.

[0046] When the first driving rod 111 is unfolded from the driven lifting rod 112, the first protruding part 1111 moves upwards along the smooth inner surface of the driven lifting rod 112 until it is limited by the internal thread at the top of the driven lifting rod 112, at which point the external thread at the end of the first driving rod 111 engages with the internal thread of the driven lifting rod 112, and the first protruding part 1111 limits the relative movement of the first driving rod 111 and the driven lifting rod 112. When the first driving rod 111 continues to rotate, the driven lifting rod 112 rotates synchronously with the first driving end.

[0047] The bottom of the main rod 113 is fixed on the second driving device 130, and the outer rod body is smooth. The internal structure of the main rod 113 is the same as that of the driven lifting rod 112. The movement state of the main rod 113 and the driven lifting rod 112 when they overlap and extend is consistent with the movement principle of the first driving rod 111 and the driven lifting rod 112.

[0048] Specifically, when the driven lifting rod 112 overlaps the main rod 113, the external thread at the top of the driven lifting rod 112 engages with the internal thread at the top of the main rod 113.

[0049] When the driven lifting rod 112 is unfolded from the main rod 113, the second protruding part 1121 moves upwards along the smooth inner surface of the main rod 113 until it is limited by the internal thread at the top of the main rod 113, at which point the external thread at the end of the driven lifting rod 112 engages with the internal thread of the main rod 113, and the second protruding part 1121 limits the relative movement of the driven lifting rod 112 and the main rod 113.

[0050] The first driving device 120 is connected to the top plate 211 at the non-driving end, and the outer periphery of the driving end is connected to the first housing 210. The first housing 210 is sleeved on the connecting rod assembly 110, and the first housing 210 is lifted under the driving of the first driving device 120.

[0051] The connecting rod assembly 110 is sleeved with a first platform 221 and a second platform 222 connected with the second shell 220, and a shaft sleeve on the second platform 222 is engaged with the second driving rod 140.

[0052] The second driving rod 140 is provided with a thread structure on the outer side, and the bottom is engaged with the driving end of the second driving device 130.

[0053] Specifically, the second driving device 130 is engaged with the second driving rod 140 to rotate, and the shaft sleeve of the second platform 222 is displaced upward or downward along the second driving rod 140 under relative motion.

[0054] The second driving device 130 is fixed with a bottom plate 231, the outer periphery of the bottom plate 231 is connected with a third shell 230, and the top of the third shell 230 is connected with a third platform 232.

[0055] A motor home lifting platform, as shown, comprises a top cover 300 and a fence assembly 400 limited by four multi-stage lifting structures.

[0056] The top cover 300 is fixed on the top plate 211 and used for shielding the top of the motor home.

[0057] The fence assembly 400 is a multi-layered fence structure, the fence structure is hollow up and down, and the outer periphery of the outermost recess 401 is connected with the first platform 221. The inner side of the fence structure is provided with a connector male end 403, and the outer side is provided with a connector female end 402 except the uppermost fence structure.

[0058] When the outer fence assembly 400 moves upward, the connector female end 402 moves to the connector male end 403 until they are limited. In this embodiment, the connector female end 402 and the connector male end 403 are hook structures.

[0059] According to the customer's demand, the lifting height of the fence assembly 400 is adjusted, and the number of layers or the height of the fence assembly 400 is selected after determination. In this embodiment, the fence assembly 400 comprises a first fence 410, a second fence 420 and a third fence 430.

[0060] Specifically, the third fence 430 is fixed on the motor home, the second fence 420 and the first fence 410 are sequentially sleeved outside the second fence 420 and placed on the motor home at the bottom, and the recess 401 around the first fence 410 is connected with the first platform 221.

[0061] The first platform 221 moves upward under the linkage of the second platform 222, the first platform 221 drives the first enclosure 410 to move upward, when the female end 403 of the connecting piece on the first enclosure 410 and the male end 402 of the connecting piece on the second enclosure 420 are limited to each other, the first enclosure 410 drives the second enclosure 420 to move upward together, when the forming is completed, the female end 403 of the connecting piece on the second enclosure 420 and the male end 402 of the connecting piece on the third enclosure 430 are limited to each other.

[0062] Further description in combination with the use mechanism of the motor home lifting platform:

[0063] Reference to the initial state of the motor home lifting platform Figure 7 Each component is in the initial position;

[0064] S1, raise the top cover

[0065] Reference Figure 8 The first motor starts, one end of the first drive rod 111 is engaged with the driving end of the first drive device 120 to rotate, the other end is limited in the driven lifting rod 112, the first protrusion 1111 is attached to the smooth inner surface of the driven lifting rod 112 to move upward until it is limited by the internal thread at the top of the driven lifting rod 112, at this time, the external thread at the end of the first drive rod 111 is engaged with the internal thread of the driven lifting rod 112, and the first protrusion 1111 limits the relative movement of the first drive rod 111 and the driven lifting rod 112, when the first drive rod 111 continues to rotate, the driven lifting rod 112 rotates synchronously with the first driving end;

[0066] When the driven lifting rod 112 overlaps the main rod 113, the external thread at the top of the driven lifting rod 112 is engaged with the internal thread at the top of the main rod 113;

[0067] When the driven lifting rod 112 and the main rod 113 are unfolded, the second protrusion 1121 is attached to the smooth inner surface of the main rod 113 to move upward until it is limited by the internal thread at the top of the main rod 113, at this time, the external thread at the end of the driven lifting rod 112 is engaged with the internal thread of the main rod 113, and the second protrusion 1121 limits the relative movement of the driven lifting rod 112 and the main rod 113;

[0068] The first motor is turned off, and the top cover 300 is lifted to the highest position;

[0069] S2, open the enclosure assembly

[0070] The second drive device 130 engages the second drive rod 140 to rotate, the shaft sleeve of the second platform 222 is connected to the second housing 220 to drive the first platform 221 to rise upward along the second drive rod 140 under relative movement;

[0071] ReferenceFigure 9 The first platform 221 drives the first enclosure 410 to move upward, and when the female end 403 of the connecting piece on the first enclosure 410 and the male end 402 of the connecting piece on the second enclosure 420 are limited to each other, the rising of the first enclosure 410 is completed;

[0072] Reference Figure 10 The first enclosure 410 drives the second enclosure 420 to move upward, and when the female end 403 of the connecting piece on the second enclosure 420 and the male end 402 of the connecting piece on the third enclosure 430 are limited to each other, the rising of the second enclosure 420 is completed;

[0073] The second motor is turned off.

[0074] The lifting assembly provided by the application can improve the utilization rate of the longitudinal space of the motor home and improve the height of the motor home according to different requirements.

[0075] The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the application, and the purpose is to enable those skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application. Any equivalent transformation or modification made according to the spirit and essence of the application should be covered within the protection scope of the application.

[0076] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the connection between two elements inside.

[0077] For those skilled in the art, the specific meanings of the above-mentioned terms in the application can be understood according to the specific circumstances.

[0078] It should be understood that the above-mentioned embodiments are only exemplary and not limiting, and those skilled in the art can make various obvious or equivalent modifications or replacements to the above-mentioned details without departing from the basic principles of the application, which will be included in the protection scope of the application.

Claims

1. A multi-stage lifting structure, characterized in that: Includes a lifting assembly (100) and a housing (200); The lifting assembly (100) is connected to and drives the linkage assembly (110) to lift and lower, and the second driving device (130) is connected to and drives the second driving rod (140) to move the upper limit barrier platform. The linkage assembly (110) is a three-layer retractable rod structure.

2. The multi-stage lifting structure according to claim 1, characterized in that: The linkage assembly (110) includes, from top to bottom, a first drive rod (111), a driven lifting rod (112), and a main rod (113); The external thread of the first drive rod (111) engages with the drive end of the first drive device (120), and the other end is provided with a first protrusion (1111) that limits it inside the driven lifting rod (112). The first protrusion (1111) fits against the inside of the driven lifting rod (112).

3. The multi-stage lifting structure according to claim 2, characterized in that: The non-driving end of the first driving device (120) is connected to the top plate (211), and the outer periphery of the driving end is connected to and drives the first housing (210) to rise and fall.

4. The multi-stage lifting structure according to claim 2, characterized in that: The driven lifting rod (112) has an external thread on the outside and a second protrusion (1121) at one end, and a smooth interior with an internal thread at one end.

5. The multi-stage lifting structure according to claim 2, characterized in that: The bottom of the main rod (113) is fixed on the second drive device (130). The outer rod body is smooth, and the internal structure is the same as that of the driven lifting rod (112).

6. The multi-stage lifting structure according to claim 5, characterized in that: The drive end of the second drive device (130) engages with the second drive rod (140), and the bushing on the second platform (222) engages with the rod body of the second drive rod (140). The second platform (222) is also sleeved on the connecting rod assembly (110).

7. The multi-stage lifting structure according to claim 6, characterized in that: The bottom of the second drive device (130) is fixed with a base plate (231), and the outer periphery of the base plate (231) is connected to the third housing (230).

8. A motorhome lifting platform, characterized in that: Including the multi-stage lifting structure as described in any one of claims 1-7.

9. The RV lifting platform according to claim 8, characterized in that: The multi-stage lifting structure has a top plate (211) fixed to the top cover, and a first platform (221) limited within the recess of the enclosure component (400).

10. The RV lifting platform according to claim 9, characterized in that: The enclosure assembly (400) has a connector sub-end (402) at the bottom inner side and a connector female end (403) at the top outer side, including a first enclosure (410), a second enclosure (420) and a third enclosure (430) that limit each other vertically.

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