A recreational vehicle rear side bed board stretch expansion structure

Abstract

The utility model belongs to the technical field of tensile structure, concretely relates to a house car rear side bed board tensile extension structure, including bed platform main part, the inner wall of bed platform main part is connected with the rotating bed board that rotates, the side of rotating bed board away from bed platform main part is installed with the extension bed board that penetrates and slides, the side fixedly connected with the extension bed board away from rotating bed board is the position spacing block, the side of bed platform main part is provided with depositing subassembly, the bottom of position spacing block is provided with firm device, firm device includes extension groove, the bottom of position spacing block is set up in extension groove, the inner wall of extension groove is fixedly connected with the supporting plate, the bottom of supporting plate is provided with positioning assembly. The utility model has solved the problem that the existing bed board tensile structure cannot provide effective supporting force after the bed board is completely unfolded, causes the user to lie on the bed board, and the bed board is prone to the problem of bending and rotating assembly damage after lying on the bed board, thereby guaranteeing the normal use of bed board.

Description

Technical Field

[0001] This utility model belongs to the field of tensile structure technology, specifically relating to a tensile expansion structure for the rear side bed panel of a motorhome. Background Technology

[0002] The background technology of the stretchable and expandable rear bed panel structure in RVs is generally related to improving the efficiency, comfort, and versatility of RV interior space. As the RV market develops, consumers' needs for interior space are becoming increasingly diverse, especially during long trips or camping trips, where the bed needs to be flexibly expanded and stowed away. Traditional RV bed designs may suffer from cramped spaces and inflexible bed area adjustments. Therefore, designers have begun to develop stretchable and expandable bed panel structures to meet the needs of different scenarios. As RV designs become increasingly compact, providing sufficient resting area within limited space has become a design challenge. The stretchable and expandable bed panel structure can provide a larger sleeping area without occupying additional interior space.

[0003] Patent publication number CN218877034U discloses a stretchable and expandable structure for the rear bed panel of a motorhome, including a rear row structure. The rear row structure includes a main body of the motorhome rear row, and a rear wardrobe rack is fixedly connected to the back of the main body. The front of the rear wardrobe rack has a transverse sliding guide rail, and the bottom of the transverse sliding guide rail has a longitudinal sliding guide rail. This patent, by providing a fixed bed panel, facilitates the use of the bed panel. In the normal state, the fixed bed panel is placed longitudinally, and a mattress is placed in the gap between the fixed bed panel and the main body of the motorhome. In use, the telescopic support gas rod is activated to push the fixed bed panel upward, and the user holds the fixed bed panel to move it outward to unfold it. This helps to reduce the space occupancy rate in the normal state and improve the user's comfort.

[0004] However, the current RV rear bed panel extension structure has the following problems: the existing bed panel extension structure cannot provide effective support after the bed panel is fully extended, which makes the bed panel very easy to bend and the rotating components damaged when the user lies on the bed panel. Therefore, we propose an RV rear bed panel extension structure. Utility Model Content

[0005] The purpose of this utility model is to provide a stretchable and expandable structure for the rear side bed board of a motorhome, which can solve the problem that the existing stretchable bed board structure in the related technology cannot provide effective support after the bed board is fully extended, resulting in the bed board being easily bent and the rotating components being damaged when the user lies on the bed board.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A retractable rear bed panel structure for a motorhome includes a bed platform body. A rotating bed board is rotatably connected to the inner wall of the bed platform body. An extension bed board is slidably installed through the rotating bed board on the side away from the bed platform body. An extension partition is fixedly connected to the side of the extension bed board away from the rotating bed board. A storage component is provided on the side of the bed platform body. A stabilizing device is provided at the bottom of the extension partition. The stabilizing device includes an extension groove, which is formed at the bottom of the extension partition. A support plate is fixedly connected to the inner wall of the extension groove. A positioning component is provided at the bottom of the support plate. A fixing post is fixedly connected to the movable end of the positioning component. A fixing base is fixedly connected to the bottom of the inner wall of the bed platform body.

[0008] Preferably, the positioning component includes a three-section electric push rod, the fixed end of which is fixedly connected to the bottom of the support plate, the top of which is fixedly connected to the telescopic end of the three-section electric push rod, a flat bottom ring fixedly connected to the outer wall of the fixed bottom ring, a plurality of positioning pins fixedly connected to the bottom of the flat bottom ring, a limiting groove fixedly connected to the bottom of the inner wall of the bed body, and the telescopic end of the three-section electric push rod being the moving end of the positioning component.

[0009] Preferably, the storage assembly includes a storage box, the side of which is fixedly connected to the outer wall of the bed frame body, and a storage drawer is slidably installed through the top of the storage box, with a lifting handle fixedly connected to the top of the storage drawer.

[0010] Preferably, the bottom of the positioning pin is curved, and the inner wall of the limiting groove of the limiting slot is located on the movement trajectory of the outer wall of the positioning pin.

[0011] Preferably, the outer diameter of the fixed insertion post is equal to the inner diameter of the fixed base, and the inner wall of the fixed base is located on the movement trajectory of the outer wall of the fixed insertion post.

[0012] Preferably, an anti-loosening device is provided on the outer wall of the flat bottom ring. The anti-loosening device includes a limiting ring. The inner wall of the limiting ring is fixedly connected to the outer wall of the flat bottom ring. Two extension blocks are fixedly connected to the outer wall of the limiting groove. A limiting block is rotatably connected between the two extension blocks. A torsion spring is provided between the limiting block and the extension blocks.

[0013] Preferably, the top of the limiting block is sloped, and the inner wall of the limiting block is located on the movement trajectory of the top of the limiting ring.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This invention, through the setting of a stabilizing device, enables the extension groove, support plate, three-section electric push rod, fixed insert, flat bottom ring, positioning insert, fixed base, and limiting groove to cooperate. The downward movement of the fixed insert drives the flat bottom ring downward, which in turn drives the positioning insert downward to contact the top surface of the limiting groove. At this time, because the bottom surface of the positioning insert is arc-shaped, the positioning insert can still be accurately inserted into the limiting groove of the limiting groove even with slight deviation. At the same time, the downward movement of the fixed insert allows it to be accurately inserted into the fixed base under the constraint of the positioning insert. This strictly limits the position of the three-section electric push rod, ensuring both the horizontal position of the rotating bed board and providing reliable support for rotation.

[0016] This invention utilizes an anti-loosening device to coordinate the limiting ring, extension block, limiting latch, and torsion spring. The downward movement of the flat bottom ring causes the limiting ring to move downwards, applying force to the top inclined surface of the limiting latch on its bottom surface. When the limiting latch is subjected to this force, it rotates away from the flat bottom ring. After the limiting ring has moved and passed the limiting latch, the limiting latch is no longer subjected to the force of the limiting ring. At this point, the reverse force of the torsion spring causes the limiting latch to return to its original position, thus ensuring a tight fit between the inner wall of the limiting latch and the top surface of the limiting ring. This restricts the position of each component, preventing excessive user movement that could lead to loosening or unnecessary friction damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the storage box of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support plate of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure at the limiting ring of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Bed frame body; 2. Rotating bed board; 3. Extending bed board; 4. Extending partition; 5. Storage assembly; 51. Storage box; 52. Storage drawer; 53. Lifting handle; 6. Stabilizing device; 61. Extension slot; 62. Support plate; 63. Three-section electric push rod; 64. Fixing post; 65. Flat bottom ring; 66. Positioning post; 67. Fixing base; 68. Restricting slot; 7. Anti-loosening device; 71. Restricting ring; 72. Extension block; 73. Restricting block; 74. Torsion spring. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figure 1-5 As shown, a RV rear side bed board extension structure includes a bed platform body 1, a rotating bed board 2 rotatably connected to the inner wall of the bed platform body 1, an extension bed board 3 slidably installed through the rotating bed board 2 away from the bed platform body 1, an extension partition 4 fixedly connected to the extension bed board 3 away from the rotating bed board 2, a storage component 5 provided on the side of the bed platform body 1, a stabilizing device 6 provided at the bottom of the extension partition 4, the stabilizing device 6 including an extension groove 61, the extension groove 61 being opened on the bottom of the extension partition 4, a support plate 62 fixedly connected to the inner wall of the extension groove 61, a positioning component provided at the bottom of the support plate 62, a fixed insertion post 64 fixedly connected to the moving end of the positioning component, and a fixed base 67 fixedly connected to the bottom of the inner wall of the bed platform body 1, the surfaces of the fixed base 67 and the fixed insertion post 64 are both smooth surfaces;

[0026] The positioning component includes a three-section electric push rod 63. The fixed end of the three-section electric push rod 63 is fixedly connected to the bottom of the support plate 62. The top of the fixed insertion post 64 is fixedly connected to the telescopic end of the three-section electric push rod 63. A flat bottom ring 65 is fixedly connected to the outer wall of the fixed insertion post 64. Multiple positioning insertion posts 66 are fixedly connected to the bottom of the flat bottom ring 65. A limiting groove 68 is fixedly connected to the bottom of the inner wall of the bed body 1. The telescopic end of the three-section electric push rod 63 is set as the moving end of the positioning component, and the moving end is used to provide power to the component.

[0027] The storage component 5 includes a storage box 51, the side of which is fixedly connected to the outer wall of the bed frame body 1. A storage drawer 52 is slidably installed through the top of the storage box 51. A lifting handle 53 is fixedly connected to the top of the storage drawer 52. This is prior art and will not be elaborated further.

[0028] The bottom of the positioning pin 66 is curved, and the inner wall of the limiting groove of the limiting plate 68 is located on the movement trajectory of the outer wall of the positioning pin 66. The curved surface enhances the fit between the components.

[0029] The outer diameter of the fixed pin 64 is equal to the inner diameter of the fixed base 67. The inner wall of the fixed base 67 is located on the movement trajectory of the outer wall of the fixed pin 64. The equality of the inner and outer diameters can ensure that the components will not loosen after they are overlapped.

[0030] According to the above structure, when a user needs to store clothing or other personal items, the user manually pulls the lifting handle 53 upwards. The upward movement of the lifting handle 53 causes the storage drawer 52 to move upwards, thus opening the storage space of the storage box 51. At this time, the user places the items into the storage box 51 and then closes the storage drawer 52. When the user needs to rest, the staff opens the three-section electric push rod 63 through the external controller. This causes the telescopic end of the three-section electric push rod 63 to move the fixed insertion post 64 downwards. The downward movement of the fixed insertion post 64 causes the flat bottom ring 65 to move downwards. When the flat bottom ring 65 moves downward, it drives the positioning pin 66 to move downward and contact the top surface of the limiting slot 68. At this time, because the bottom surface of the positioning pin 66 is arc-shaped, the positioning pin 64 can still be accurately inserted into the limiting slot of the limiting slot 68 even if there is a slight offset. At the same time, the fixed pin 64 moves downward, so that the fixed pin 66 is accurately inserted into the fixed base 67 under the restriction of the positioning pin 66. This strictly limits the position of the three-section electric push rod 63, ensuring the horizontal position of the rotating bed board 2 and providing reliable support for the rotation.

[0031] like Figure 1-5 As shown, an anti-loosening device 7 is provided on the outer wall of the flat bottom ring 65. The anti-loosening device 7 includes a limiting ring 71. The inner wall of the limiting ring 71 is fixedly connected to the outer wall of the flat bottom ring 65. Two extension blocks 72 are fixedly connected to the outer wall of the limiting groove 68. A limiting block 73 is rotatably connected between the two extension blocks 72. A torsion spring 74 is provided between the limiting block 73 and the extension blocks 72. The combined force of each component forms a reliable snap-fit ​​locking structure.

[0032] The top of the limiting block 73 is set with a slope, and the inner wall of the limiting block 73 is located on the movement trajectory of the top of the limiting ring 71. The slope can enhance the coherence between components.

[0033] According to the above structure, the downward movement of the flat bottom ring 65 causes the limiting ring 71 to move downward. The downward movement of the limiting ring 71 causes the bottom surface of the limiting ring 71 to exert a force on the top inclined surface of the limiting block 73. When the limiting block 73 is subjected to the force, it rotates away from the flat bottom ring 65. After the limiting ring 71 moves and passes the limiting block 73, the limiting block 73 is no longer subjected to the force of the limiting ring 71. At this time, the reverse force of the torsion spring 74 causes the limiting block 73 to return to its original position, so that the inner wall plane of the limiting block 73 is tightly engaged with the top surface of the limiting ring 71, thereby restricting the position between the components and preventing the user from making excessive movements during use, which could lead to loosening and unnecessary friction damage between the components.

[0034] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A stretchable extension structure for the rear side bed of a motorhome, comprising a bed platform body (1), a rotating bed board (2) rotatably connected to the inner wall of the bed platform body (1), an extension bed board (3) slidably installed on the side of the rotating bed board (2) away from the bed platform body (1), a spacer block (4) fixedly connected to the side of the extension bed board (3) away from the rotating bed board (2), and a storage assembly (5) provided on the side of the bed platform body (1), characterized in that: The bottom of the expansion partition (4) is provided with a stabilizing device (6). The stabilizing device (6) includes an extension groove (61). The extension groove (61) is opened on the bottom of the expansion partition (4). A support plate (62) is fixedly connected to the inner wall of the extension groove (61). A positioning component is provided at the bottom of the support plate (62). A fixing pin (64) is fixedly connected to the moving end of the positioning component. A fixing base (67) is fixedly connected to the bottom of the inner wall of the bed body (1).

2. The RV rear side bed board stretching and expansion structure according to claim 1, characterized in that: The positioning component includes a three-section electric push rod (63), the fixed end of which is fixedly connected to the bottom of the support plate (62), the top of the fixed insert (64) is fixedly connected to the telescopic end of the three-section electric push rod (63), a flat bottom ring (65) is fixedly connected to the outer wall of the fixed insert (64), a plurality of positioning inserts (66) are fixedly connected to the bottom of the flat bottom ring (65), a limiting groove (68) is fixedly connected to the bottom of the inner wall of the bed body (1), and the telescopic end of the three-section electric push rod (63) is set as the moving end of the positioning component.

3. The RV rear side bed board stretching and expansion structure according to claim 1, characterized in that: The storage assembly (5) includes a storage box (51), the side of which is fixedly connected to the outer wall of the bed frame body (1), and a storage drawer (52) is slidably installed through the top of the storage box (51), and a lifting handle (53) is fixedly connected to the top of the storage drawer (52).

4. The RV rear side bed board stretching and expansion structure according to claim 2, characterized in that: The bottom of the positioning pin (66) is curved, and the inner wall of the limiting groove of the limiting plate (68) is located on the movement trajectory of the outer wall of the positioning pin (66).

5. The RV rear side bed board stretching and expansion structure according to claim 2, characterized in that: The outer diameter of the fixed insertion post (64) is equal to the inner diameter of the fixed base (67), and the inner wall of the fixed base (67) is located on the movement trajectory of the outer wall of the fixed insertion post (64).

6. The RV rear side bed board stretching and expansion structure according to claim 2, characterized in that: An anti-loosening device (7) is provided on the outer wall of the flat bottom ring (65). The anti-loosening device (7) includes a limiting ring (71). The inner wall of the limiting ring (71) is fixedly connected to the outer wall of the flat bottom ring (65). Two extension blocks (72) are fixedly connected to the outer wall of the limiting groove (68). A limiting block (73) is rotatably connected between the two extension blocks (72). A torsion spring (74) is provided between the limiting block (73) and the extension block (72).

7. The RV rear side bed board stretching and expansion structure according to claim 6, characterized in that: The top of the limiting block (73) is set with an inclined surface, and the inner wall of the limiting block (73) is located on the movement trajectory of the top of the limiting ring (71).

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