A recreational vehicle with a rear expansion device

Abstract

The utility model relates to the technical field of travel trailer, especially a travel trailer with rear expansion device, including the car body, the rear operating mouth is set up at the rear end of car body, the rear expansion box is slidably arranged on the car body and is located at the rear operating mouth, the sliding limiting assembly is arranged on the car body, the sliding limiting assembly is connected with the rear expansion box, and the rear expansion box is limited to slide along the straight line, the driving assembly is arranged in the car body, the driving assembly is connected with the rear expansion box, and the rear expansion box is controlled to move along the straight line and to extend or enter the car body, through the above technical scheme, the space in the car body can be expanded, and the comfort degree of travel trailer is improved.

Description

Technical Field

[0001] This utility model relates to the field of recreational vehicle technology, and in particular to a recreational vehicle with a rear extension device. Background Technology

[0002] RVs are a type of fashionable vehicle imported from abroad. They are equipped with home-like amenities such as bedding, stoves, refrigerators, cabinets, sofas, dining tables and chairs, washing facilities, air conditioning, televisions, and audio equipment. They can be divided into driving areas, living areas, bedroom areas, bathroom areas, and kitchen areas. RVs integrate "clothing, food, housing, and transportation," realizing the fashionable concept of "living while traveling, and traveling while living." However, the relatively small interior space of RVs significantly impacts their comfort level. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a motorhome with a rear extension device, which can expand the interior space and improve the comfort of the motorhome.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this application provides a recreational vehicle with a rear extension device, including a vehicle body, a rear operating port at the rear end of the vehicle body; a rear extension box slidably disposed on the vehicle body and located at the rear operating port; a sliding limiting component disposed on the vehicle body, the sliding limiting component being connected to the rear extension box and restricting the rear extension box from sliding in a straight line; a drive component disposed inside the vehicle body, the drive component being connected to the rear extension box and controlling the rear extension box to move in a straight line to extend or enter the vehicle body.

[0007] Preferably, a limiting stool is provided in the vehicle body and in the portion near the rear operating port, and a set of limiting stools is provided on both sides along the moving direction of the rear expansion box; a limiting groove is formed between the two sets of limiting stools; a cavity is formed at one end of the rear expansion box located in the vehicle body, and a limiting block is formed on the side of the rear expansion box near the limiting groove, the limiting block is fitted into the limiting groove and is slidably connected to the limiting groove.

[0008] Preferably, a limit guide rail is provided parallel to the lower part of the limit block at intervals. One end of the limit guide rail is fixedly connected to the limit block, and the other end extends into the interior of the vehicle body. Two sets of sliding limit components are provided at intervals in the limit groove and along the length of each limit guide rail. The sliding limit components cooperate with the limit guide rail.

[0009] Preferably, a fixing block is provided at intervals on one side of the limiting block near the limiting guide rail, and the fixing block is fixedly connected to the limiting guide rail.

[0010] Preferably, the sliding limiting assembly includes a mounting plate, an upper limiting roller group, a lower limiting roller group, and an abutment block; the mounting plate is fixed to the bottom of the limiting groove, and two plates are symmetrically arranged at intervals, with the two mounting plates located on the vertical sides of the limiting guide rail respectively; the upper limiting roller group and the lower limiting roller group are both fixed between the two mounting plates, with the upper limiting roller group located on the upper side of the limiting guide rail and the lower limiting roller group located on the lower side of the limiting guide rail; the upper limiting roller group includes an upper connecting shaft and an upper limiting bearing; the upper connecting shaft is fixed between the two mounting plates, and the upper limiting bearing is sleeved on the... At least two upper limit bearings are spaced apart on the upper connecting shaft, and the upper limit bearings abut against the upper sidewall of the limit guide rail; multiple lower limit roller groups are spaced apart along the length of the limit guide rail; each lower limit roller group includes a lower connecting shaft and a lower limit bearing; both ends of the lower connecting shaft are fixedly connected to the mounting plate, and at least two lower limit bearings are sleeved on the lower connecting shaft, and the lower limit bearings abut against the lower sidewall of the limit guide rail; multiple abutting blocks are fixedly provided on the side of the two mounting plates that are close to each other, and the abutting blocks abut against the vertical sidewall of the limit guide rail.

[0011] Preferably, the drive assembly includes a rack, a gear, a long shaft, a worm gear reducer, and a first motor; the portion of the limiting guide rail away from the rear extension box is fixed with a rack, which passes through the middle of two mounting plates; both ends of the long shaft are rotatably connected to the mounting plates, and each end of the long shaft is provided with a gear, which is located between the two mounting plates and meshes with the rack; the worm gear reducer and the first motor are both fixed in the vehicle body, the first motor is connected to the worm gear reducer, and the worm gear reducer is connected to the long shaft and drives the long shaft to rotate.

[0012] Preferably, the drive assembly includes a cylinder or a hydraulic cylinder, the piston end of which is connected to the rear expansion box.

[0013] Preferably, the driving assembly includes a driving screw, a driving block, and a second motor; the driving screw is rotatably connected to the bottom of the limiting groove, the length direction of the driving screw is parallel to the length direction of the limiting guide rail, and one or two driving screws are provided; a driving block is threadedly connected to the driving screw, the driving block is fixed to the lower end of the limiting block, and the second motor controls the rotation of the driving screw.

[0014] Preferably, the rear extension box has an integrally formed rear extension door at the end away from the vehicle body, and the rear extension door can open or close the rear operating port.

[0015] Preferably, a tailgate is rotatably connected to the vehicle body and located on one side of the rear operating port.

[0016] (III) Beneficial Effects

[0017] This utility model provides a motorhome with a rear extension device. By providing an outwardly extending rear extension box at the rear end of the vehicle, the interior space of the vehicle can be expanded. At the same time, through the rear extension box structure and sliding limit component, the rear extension box can remain stable during outward extension or when retracted, and has a long service life. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a recreational vehicle with a rear extension device according to the present invention;

[0019] Figure 2 This is a sectional view of the present invention, highlighting the connection between the vehicle body and the rear extension box;

[0020] Figure 3 To highlight the utility model Figure 2 A magnified view of a portion of the image;

[0021] Figure 4 This is a schematic diagram of the connection structure between the limiting track and the rear expansion box of this utility model;

[0022] Figure 5 This is a schematic diagram highlighting the driving component in the first embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the prominent driving component in the third embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the protruding tailgate in the fourth embodiment of this utility model.

[0025] Marked in the attached diagram:

[0026] 100. Vehicle body; 110. Rear operating port; 120. Limiting stool; 130. Limiting long slot; 140. Tailgate; 200. Rear expansion box; 210. Cavity; 220. Limiting block; 230. Limiting guide rail; 231. Fixed block; 240. Rear expansion door; 300. Sliding limit assembly; 310. Mounting plate; 320. Upper limit roller assembly; 321. Upper connecting shaft; 322. Upper limit bearing; 323. First abutting sleeve; 330. Lower limit roller assembly; 331. Lower connecting shaft; 332. Lower limit bearing; 333. Second abutting sleeve; 340. Abutting block; 400. Drive assembly; 410. Rack; 420. Gear; 430. Long shaft; 440. Worm gear reducer; 450. First motor; 460. Drive screw; 470. Drive block; 480. Second motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] First Embodiment

[0029] This utility model provides a motorhome with a rear extension device, see [link]. Figures 1-5 The system includes a vehicle body 100, with a rear operating port 110 at the rear end of the vehicle body 100; a rear extension box 200 is slidably disposed on the vehicle body 100 and located at the rear operating port 110. The rear extension box 200 can slide out of or into the vehicle body 100 from the rear operating port 110. By providing the rear extension box 200, the interior space of the vehicle body 100 can be expanded, improving the comfort inside the vehicle body 100.

[0030] The vehicle body 100 is provided with a sliding limit component 300, which is connected to the rear expansion box 200 and restricts the rear expansion box 200 to slide in a straight line. During the straight line movement, the rear expansion box 200 is controlled to slide into the vehicle body 100 or slide out from the rear operation port 110, so as to achieve the purpose of expanding the space inside the vehicle body 100.

[0031] A drive assembly 400 is provided inside the vehicle body 100. The drive assembly 400 is connected to the rear expansion box 200 and controls the rear expansion box 200 to move in a straight line, so that it slides into the vehicle body 100 or slides out from the rear operating port 110.

[0032] A limiting stool 120 is installed inside the vehicle body 100, near the rear operating port 110. One set of limiting stools 120 is installed on each side along the moving direction of the rear expansion box 200. A limiting groove 130 is formed between the two sets of limiting stools 120. A cavity 210 is formed at one end of the rear expansion box 200 inside the vehicle body 100, and a limiting block 220 is formed on the side of the rear expansion box 200 near the limiting groove 130. The limiting block 220 is fitted into the limiting groove 130 and slidably connected to it. When the rear expansion box 200 slides outward to open, the limiting groove 130 and the cavity 210 become usable space inside the vehicle. The limiting stools 120 on both sides are usable by people, and at the same time, the limiting stools 120 limit the limiting block 220, further improving the stability of the rear expansion box 200 during closing or opening.

[0033] A limit guide rail 230 is provided parallel to the limit block 220 at intervals below it. One end of the limit guide rail 230 is fixedly connected to the limit block 220, and the other end extends into the vehicle body 100. Specifically, a fixing block 231 is provided at intervals on the side of the limit block 220 near the limit guide rail 230, and is fixedly connected to the limit guide rail 230 through the fixing block 231. The fixing block 231 provides a gap between the limit block 220 and the lower limit guide rail 230, facilitating the sliding limit assembly 300 to limit its movement.

[0034] Two sets of sliding limit components 300 are spaced apart within the limiting slot 130 and along the length of each limiting guide rail 230. The sliding limit components 300 cooperate with the limiting guide rail 230. When the rear expansion box 200 is retracted, one set of sliding limit components 300 is located on the limiting guide rail 230 near the end of the rear expansion box 200, and the other set is located in the middle of the limiting guide rail 230. When the rear expansion box 200 is opened, one set of sliding limit components 300 is located in the middle of the limiting guide rail 230, and the other set is located on the limiting guide rail 230 away from the rear expansion box 200.

[0035] The sliding limit assembly 300 includes a mounting plate 310, an upper limit roller group 320, a lower limit roller group 330, and an abutment block 340.

[0036] Mounting plate 310 is fixed to the bottom of the limiting groove 130, and two plates are symmetrically arranged at intervals. The two mounting plates 310 are located on the vertical sides of the limiting guide rail 230 respectively.

[0037] The upper limit roller group 320 and the lower limit roller group 330 are both fixed between two mounting plates 310, with the upper limit roller group 320 located on the upper side of the limit guide rail 230 and the lower limit roller group 330 located on the lower side of the limit guide rail 230.

[0038] The upper limit roller assembly 320 includes an upper connecting shaft 321 and an upper limit bearing 322. The upper connecting shaft 321 is fixed between two mounting plates 310. The upper limit bearing 322 is sleeved on the upper connecting shaft 321, and at least two are spaced apart. The upper limit bearing 322 abuts against the upper side wall of the limiting guide rail 230. More preferably, to ensure the stability of the upper limit bearing 322, a first abutting sleeve 323 is provided between two upper limit bearings 322.

[0039] Multiple sets of lower limit roller groups 330 are spaced apart along the length of the limiting guide rail 230. Each lower limit roller group 330 includes a lower connecting shaft 331 and lower limit bearings 332. Both ends of the lower connecting shaft 331 are fixedly connected to the mounting plate 310. At least two lower limit bearings 332 are sleeved on the lower connecting shaft 331 and are spaced apart. The lower limit bearings 332 abut against the lower side wall of the limiting guide rail 230. A second abutting sleeve 333 is provided between two adjacent lower limit bearings 332. The bottom abutting sleeve is sleeved on the lower connecting shaft 331, and both ends abut against the inner ring of the lower limit bearing 332. This serves the purpose of limiting the position.

[0040] Multiple abutment blocks 340 are fixedly installed on the side of the two mounting plates 310 that are close to each other, and the abutment blocks 340 abut against the vertical side wall of the limiting guide rail 230.

[0041] The sliding limit component 300 can limit and support the limit guide rail 230. It abuts against the upper limit bearing 322 and the lower limit bearing 332, and can move outward more easily when it needs to expand the space outward.

[0042] In one embodiment, the drive assembly 400 includes a rack 410, a gear 420, a long shaft 430, a worm gear reducer 440, and a first motor 450.

[0043] The portion of the limiting guide rail 230 away from the rear expansion box 200 is fixed with a rack 410, which passes through the middle of two mounting plates 310 and is located between two upper limit bearings 322.

[0044] Both ends of the long shaft 430 are rotatably connected to two mounting plates 310. A gear 420 is provided at both ends of the long shaft 430. The gear 420 is located between the two mounting plates 310 and meshes with the rack 410.

[0045] Both the worm gear reducer 440 and the first motor 450 are fixed inside the vehicle body 100. The first motor 450 is connected to the worm part of the worm gear reducer 440, and the worm wheel part of the worm gear reducer 440 is connected to the long shaft 430 and drives the long shaft 430 to rotate.

[0046] In one embodiment, a rear extension box 200 has an integrally formed rear extension door 240 at the end away from the vehicle body 100, and the rear extension door 240 can open or close the rear operating port 110. In this embodiment, when the rear extension box 200 is opened, the rear extension door 240 moves outward following the extension box 200.

[0047] This utility model provides a motorhome with a rear extension device. By providing a rear extension box 200 that can extend outward at the rear end of the vehicle, the internal space of the vehicle body 100 can be expanded. At the same time, through the structure of the rear extension box 200 and the sliding limit component 300, the rear extension box can remain stable during the outward extension process or when it is retracted, and has a long service life.

[0048] Second Embodiment

[0049] In another embodiment, the drive assembly 400 includes a cylinder or hydraulic cylinder, the piston end of which is connected to the rear extension box 200. The movement of the rear extension box 200 is controlled by the piston end of the cylinder or hydraulic cylinder.

[0050] Third Embodiment

[0051] In another embodiment, the drive assembly 400 may further include a drive screw 460, a drive block 470, and a second motor 480.

[0052] The drive screw 460 is rotatably connected to the bottom of the limiting long groove 130. The length direction of the drive screw 460 is parallel to the length direction of the limiting guide rail 230. One or two drive screws 460 are provided. When one drive screw 460 is provided, the drive screw 460 is located in the middle of the limiting long groove 130. When two drive screws 460 are provided, both drive screws 460 are located near the limiting guide rails 230 on both sides.

[0053] A drive block 470 is threadedly connected to the drive screw 460. The drive block 470 is fixed to the lower end of the limit block 220. The second motor 480 controls the rotation of the drive screw 460. By controlling the rotation of the drive screw 460, the drive block 470 is moved linearly, thereby controlling the movement of the rear expansion box 200. Specifically, the second motor 480 can drive the drive screw 460 through a chain or belt drive.

[0054] Fourth embodiment

[0055] In another embodiment, a tailgate 140 is rotatably connected to the vehicle body 100 and located on one side of the rear operating opening 110. In this embodiment, before the rear extension box 200 is opened, the tailgate 140 opens the rear operating door first, and the tailgate 140 is connected to the steering side of the vehicle body 100.

[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0058] The embodiments described above are merely illustrative of the implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A motorhome with a rear extension device, characterized in that, Includes a vehicle body (100), with a rear operating port (110) provided at the rear end of the vehicle body (100); and a rear extension box (200) is slidably provided on the vehicle body (100) and located at the rear operating port (110). A sliding limit assembly (300) is provided on the vehicle body (100), the sliding limit assembly (300) is connected to the rear expansion box (200), and restricts the rear expansion box (200) from sliding in a straight line; A drive assembly (400) is provided inside the vehicle body (100). The drive assembly (400) is connected to the rear extension box (200) and controls the rear extension box (200) to move in a straight line to extend out of or into the vehicle body (100). A limiting stool (120) is provided inside the vehicle body (100) and near the rear operating port (110). A set of limiting stools (120) is provided on both sides along the moving direction of the rear expansion box (200); a limiting groove (130) is formed between the two sets of limiting stools (120). The rear expansion box (200) has a cavity (210) at one end inside the vehicle body (100), and a limiting block (220) is formed on the side of the rear expansion box (200) near the limiting groove (130). The limiting block (220) is fitted into the limiting groove (130) and is slidably connected to the limiting groove (130).

2. A motorhome with a rear extension device according to claim 1, characterized in that, The limiting block (220) is provided with parallel limiting guide rails (230) at intervals below it. One end of the limiting guide rail (230) is fixedly connected to the limiting block (220), and the other end extends into the interior of the vehicle body (100). Two sets of sliding limit components (300) are provided at intervals in the limiting groove (130) and along the length of each limiting guide rail (230). The sliding limit components (300) cooperate with the limiting guide rail (230).

3. A motorhome with a rear extension device according to claim 2, characterized in that, The limiting block (220) has a fixing block (231) spaced apart on one side near the limiting guide rail (230), and is fixedly connected to the limiting guide rail (230) through the fixing block (231).

4. A motorhome with a rear extension device according to claim 2, characterized in that, The sliding limit assembly (300) includes a mounting plate (310), an upper limit roller group (320), a lower limit roller group (330), and an abutment block (340). The mounting plate (310) is fixed to the bottom of the limiting groove (130), and two plates are symmetrically arranged at intervals. The two mounting plates (310) are located on the vertical sides of the limiting guide rail (230). The upper limit roller group (320) and the lower limit roller group (330) are both fixed between the two mounting plates (310), and the upper limit roller group (320) is located on the upper side of the limiting guide rail (230), while the lower limit roller group (330) is located on the lower side of the limiting guide rail (230). The upper limit roller assembly (320) includes an upper connecting shaft (321) and an upper limit bearing (322); the upper connecting shaft (321) is fixed between two mounting plates (310), the upper limit bearing (322) is sleeved on the upper connecting shaft (321), and at least two are spaced apart, the upper limit bearing (322) abuts against the upper side wall of the limiting guide rail (230); The lower limit roller group (330) is provided in multiple sets at intervals along the length direction of the limit guide rail (230); the lower limit roller group (330) includes a lower connecting shaft (331) and a lower limit bearing (332); the two ends of the lower connecting shaft (331) are fixedly connected to the mounting plate (310), the lower limit bearing (332) is sleeved on the lower connecting shaft (331), and at least two are provided at intervals; the lower limit bearing (332) abuts against the lower side wall of the limit guide rail (230); Multiple abutment blocks (340) are fixedly installed on the side of the two mounting plates (310) that are close to each other, and the abutment blocks (340) abut against the vertical side wall of the limiting guide rail (230).

5. A motorhome with a rear extension device according to claim 2, characterized in that, The drive assembly (400) includes a rack (410), a gear (420), a long shaft (430), a worm gear reducer (440), and a first motor (450). The portion of the limiting guide rail (230) away from the rear expansion box (200) is fixed with a rack (410), which passes through the middle of two mounting plates (310); Both ends of the long shaft (430) are rotatably connected to the mounting plate (310). A gear (420) is provided at both ends of the long shaft (430). The gear (420) is located between the two mounting plates (310) and meshes with the rack (410). The worm gear reducer (440) and the first motor (450) are both fixed inside the vehicle body (100). The first motor (450) is connected to the worm gear reducer (440), and the worm gear reducer (440) is connected to the long shaft (430) and drives the long shaft (430) to rotate.

6. A motorhome with a rear extension device according to claim 1, characterized in that, The drive assembly (400) includes a cylinder or hydraulic cylinder, the piston end of which is connected to the rear expansion box (200).

7. A motorhome with a rear extension device according to claim 2, characterized in that, The drive assembly (400) includes a drive screw (460), a drive block (470), and a second motor (480). The drive screw (460) is rotatably connected to the bottom of the limiting long groove (130). The length direction of the drive screw (460) is parallel to the length direction of the limiting guide rail (230). One or two drive screws (460) are provided. A drive block (470) is threaded onto the drive screw (460), and the drive block (470) is fixed to the lower end of the limit block (220). The second motor (480) controls the rotation of the drive screw (460).

8. A motorhome with a rear extension device according to claim 1, characterized in that, The rear expansion box (200) has an integrally formed rear expansion door (240) at the end away from the vehicle body (100), and the rear expansion door (240) can open or close the rear operating port (110).

9. A motorhome with a rear extension device according to claim 1, characterized in that, A tailgate (140) is rotatably connected to the vehicle body (100) and located on one side of the rear operating port (110).

Images