Flat folding camping car with telescopic underframe

Abstract

The flat folding camping car comprises a car frame, the car frame comprises a front frame, a rear frame, two side folding frames, a connecting hanging rod and a bottom folding frame, the front frame and the rear frame are symmetrically arranged, the two side folding frames, the connecting hanging rod and the bottom folding frame are symmetrically arranged, and each side folding frame comprises at least one pair of X-shaped main cross pipes which are movably riveted; the connecting suspender comprises two vertical rods and a lower cross rod, the upper end of each vertical rod is movably connected with a connecting point in the middle of one side folding frame, and the two ends of the lower cross rod are connected with the lower ends of the two vertical rods and located below the bottom folding frame; the bottom folding frame comprises a pair of bottom frames which are movably riveted, each bottom frame comprises two telescopic side pipes and two bottom transverse pipes, and each side pipe comprises an inner pipe and an outer pipe. The connecting hanging rod is connected with the two side folding frames and carries out auxiliary supporting on the bottom folding frame, the loading bearing capacity of the bottom folding frame is enhanced, the using stability of the cart is improved, the cart can be folded to be flatly folded, occupied space when the cart is not used is reduced, and the overall height of the folded bottom folding frame is reduced through the telescopic side pipes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the cart, concretely relates to a flat folding camping car with telescopic underframe. BACKGROUND

[0002] People in camping, fishing and other outdoor activities, in some places where the motor vehicle is not convenient to reach, will use the cart tool to carry various goods for a short distance. In the Chinese patent with the publication number CN221794661U, a cart convenient to fold is disclosed, which is composed of two main frame assemblies, two side wall cross assemblies, a bottom frame assembly, a pull rod assembly and a cloth bag. The bottom frame assembly includes two bottom brackets and two bottom frame joint pieces. The two sides of the adjacent end of each bottom bracket are provided with a bottom frame joint piece. Each bottom bracket includes two bottom main pipes, two bottom cross pipes and two bottom vertical pipes. The two ends of each bottom vertical pipe are fixedly connected with a bottom cross pipe. The two ends of each bottom cross pipe are fixedly connected with a bottom main pipe. The ends of the two bottom main pipes on each side, which are away from each other, are rotatably connected with a fixing piece. Each bottom frame joint piece includes two joint iron pieces. The ends of the two joint iron pieces, which are close to each other, are rivetedly connected. The ends of the two joint iron pieces, which are away from each other, are fixedly connected with a bottom main pipe. The bottom frame assembly of this cart is connected only at the front and rear sides, and the left and right sides are not connected with the side wall cross assembly, so that the bearing capacity of the bottom frame assembly is weak, and the stability is relatively poor. In addition, the two bottom brackets in the bottom frame assembly can only be folded in half, and the height of the folded bottom frame assembly is still relatively high. SUMMARY

[0003] The utility model aims at the defects of the prior art, and provides a flat folding camping car with telescopic underframe.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a flat folding camping car with telescopic underframe, which comprises a frame, the frame comprises a front frame, a rear frame and two symmetrically arranged side folding frames, a connecting boom and a bottom folding frame, the side folding frame comprises at least one pair of X-shaped main cross pipes which are movably riveted, the upper end of the side folding frame is movably riveted with the front frame or the rear frame, and the lower end is movably connected with the front frame or the rear frame, the connecting boom comprises two vertical rods and a lower cross rod, the upper end of each vertical rod is movably connected with the connecting point in the middle of a side folding frame, and the lower ends of the two vertical rods are connected with the lower cross rod and located below the bottom folding frame, the bottom folding frame comprises a pair of movably riveted bottom frames, the bottom frame comprises two telescopic side pipes and two bottom cross pipes, the side pipe comprises an inner pipe and an outer pipe, the two inner pipes and the two outer pipes are connected by a bottom cross pipe respectively, the inner pipes of the two bottom frames are movably riveted, and the outer pipes are movably riveted with the front frame or the rear frame.

[0005] Further, the inner tube rear end is provided with a ball, and the outer tube front end is provided with a limiting hole, when the inner tube is fully extended from the outer tube in the unfolded state, the ball passes through the limiting hole.

[0006] Further, the connecting boom further comprises a pipe plug, the pipe plug is installed on the inner side of the vertical rod, the pipe plug front end is embedded in the lower cross rod, the side of the pipe plug is symmetrically provided with an elastic flap.

[0007] Further, the elastic flap is obliquely arranged, the inner side is fixed on the side of the pipe plug, and the outer side is raised; or, the front end of the pipe plug is tapered.

[0008] Further, the front frame or the rear frame comprises two symmetrical support tubes and upper and lower cross tubes connecting the two support tubes, the bottom of the support tube is detachably installed with a roller; or, the front frame is movably connected with a push-pull rod.

[0009] Further, the frame is provided with a topless storage bag, and the four sides of the storage bag are detachably connected with the front frame, the rear frame and the two side folding frames.

[0010] Further, the two vertical rods and the lower cross rod are integrally formed as a U-shaped rod.

[0011] Further, the vertical rod is provided with a sliding groove for sliding connection with a connecting point in the middle of the side folding frame, and the connecting point is an upper connecting point or a lower connecting point.

[0012] Further, the upper end of the vertical rod is movably connected with the upper connecting point in the middle of the side folding frame; or, the upper end of the vertical rod is slidingly connected with the lower connecting point in the middle of the side folding frame.

[0013] Further, the upper end of the vertical rod is movably connected with the upper connecting point in the middle of the side folding frame, and the lower end is slidingly connected with the lower connecting point in the middle of the side folding frame.

[0014] Further, the side folding frame comprises a group of X-shaped main cross tubes, a group of X-shaped auxiliary cross tubes and a group of connecting tubes, the X-shaped main cross tube comprises two movable riveted main tubes, the X-shaped auxiliary cross tube comprises a movable riveted long tube and a short tube, the two ends of the long tube are movably riveted with the upper end of the front frame or the rear frame and the lower end of one main tube of the X-shaped main cross tube, the two ends of the short tube are movably riveted with the upper end of the other main tube of the X-shaped main cross tube and one end of the connecting tube, and the other end of the connecting tube is movably riveted with the front frame or the rear frame.

[0015] The utility model discloses the beneficial effect is: through setting up the connecting boom connection two side folding frame, the auxiliary support of bottom folding frame is carried out, the load bearing capacity of bottom folding frame is strengthened, the stability of cart use is promoted, through the folding realization of cart of bottom folding frame, side folding frame, reduce the space occupation when not using, adopt telescopic side pipe and reduce the overall height of bottom folding frame after folding, cross rod gathers and drives the sliding block to slide or the rotation change of short pipe and connecting pipe, make the height of whole vehicle after folding not rise, whole push -pull rod can be quickly disassembled and installed in lower cross bar, and the wheel can be disassembled and installed in the bottom of support pipe, and bottom folding frame, side folding frame and front frame, rear frame can all be separately produced and assembled, and then are assembled into whole cart, and the installation is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the perspective view of the flat folding camping car with telescopic bottom frame of example 1 Figure 1 ;

[0017] Figure 2 is the perspective view of the flat folding camping car with telescopic bottom frame of example 1 Figure 2 ;

[0018] Figure 3 is the bottom view of the flat folding camping car with telescopic bottom frame of example 1

[0019] Figure 4 is the split state diagram of telescopic pipe of example 1

[0020] Figure 5 is the split state diagram of connecting boom of example 1.

[0021] Figure 6a is the frame diagram of the first flat folding camping car with telescopic bottom frame of example 2

[0022] Figure 6b is the split state diagram of the flat folding camping car with telescopic bottom frame of example 2

[0023] Figure 6c is the perspective view of the flat folding camping car with telescopic bottom frame of example 2

[0024] Figure 6d is the frame diagram of the second flat folding camping car with telescopic bottom frame of example 2

[0025] Figure 7 is the perspective view of the flat folding camping car with telescopic bottom frame of example 3

[0026] Figure 8 is the perspective view of the flat folding camping car with telescopic bottom frame of example 4

[0027] Figure 9 is a perspective view of the flat-fold camping vehicle with telescopic chassis of Example 5;

[0028] Figure 10 is a perspective view of the flat-fold camping vehicle with telescopic chassis of Example 6.

[0029] In the figure: 1 front frame, 2 rear frame, 21 support tube, 22 upper cross tube, 23 lower cross tube, 24 sliding block, 25 fixing seat, 3 side folding frame, 31 X-shaped main cross tube, 32 X-shaped auxiliary cross tube, 32a long tube, 32b

[0030] short tube, 33 connecting tube, 34 upper connecting point, 35 lower connecting point, 4 connecting boom, 41 vertical rod, 41a sliding groove, 42 lower cross rod, 43 tube plug, 43a elastic flap, 5 bottom folding frame, 51 side tube, 510 limiting hole, 51a inner tube, 51b outer tube, 51c elastic ball, 52 bottom cross tube, 6 push-pull rod, 61 handle, 62 telescopic rod, 63 connecting head, 7 roller, 8 storage bag, 81 first connecting part, 82 second connecting part. DETAILED DESCRIPTION

[0031] The specific embodiments of the present application are further described in conjunction with the accompanying drawings, so that the technical scheme is more clear and understandable.

[0032] Example 1

[0033] As Figures 1-5 shown in a flat-fold camping vehicle with telescopic chassis, comprising a vehicle frame, the vehicle frame comprises symmetrically arranged front frame 1, rear frame 2 and symmetrically arranged two side folding frames 3, connecting boom 4 and a bottom folding frame 5, the side folding frame 3 comprises at least one pair of movable riveted X-shaped main cross tube 31, the X-shaped main cross tube 31 is formed by two main tubes movable riveted, the upper end of the side folding frame 3 is movably riveted with the front frame 1 or the rear frame 2, and the lower end is movably connected with the front frame 1 or the rear frame 2; the connecting boom 4 comprises two vertical rods 41 and a lower cross rod 42, each vertical rod 41 is movably connected with the connecting point in the middle of one side folding frame 3, and the lower cross rod 42 is connected with the lower ends of the two vertical rods 41 and located below the bottom folding frame 5; the bottom folding frame 5 comprises a pair of movable riveted bottom frames, the bottom frame comprises two telescopic side tubes 51 and two bottom cross tubes 52, the side tube 51 comprises an inner tube 51a and an outer tube 51b, the two inner tubes 51a and the two outer tubes 51b are connected by a bottom cross tube 52 respectively; the inner tubes 51a of the two bottom frames are movably riveted, and the outer tubes 51b are movably riveted with the front frame 1 or the rear frame 2.

[0034] The inner tube 51a is provided with an elastic ball 51c at the rear end, and the outer tube 51a is provided with a limiting hole 510 at the front end, when the inner tube 51a is fully extended out of the outer tube in the unfolded state, the elastic ball 51c passes through the limiting hole 510.

[0035] A specific installation structure for a marble 64 is as follows: a pair of marbles 64 are symmetrically arranged on both sides of a spring sheet (V-shaped or U-shaped), a limiting hole is opened on the inner tube 51a, the spring sheet is placed inside the inner tube 51a and the marbles 64 on both sides extend out of the limiting hole.

[0036] In this embodiment, the connecting rod 4 further includes a pipe plug 43, which is installed on the inner side of the vertical rod 41 by fasteners such as screws. The front end of the pipe plug 43 is embedded in the lower horizontal rod 42, and elastic flaps 43a are symmetrically provided on the side of the pipe plug. The inner side of the vertical rod 41 is close to the side of the lower horizontal rod 42, and the front end of the pipe plug 43, together with the elastic flaps 43a, is embedded in the lower horizontal rod 42 for fixation.

[0037] The elastic flaps 43a on the side of the tube plug 43 are inclined, with the inner side fixed to the side of the tube plug 53 and the outer side raised. The front end of the tube plug 43 is tapered, which facilitates quick and accurate assembly of the front end into the lower crossbar 42.

[0038] The front frame 1 or rear frame 2 includes two symmetrical support tubes 21 and an upper horizontal tube 22 and a lower horizontal tube 23 connecting the two support tubes. Rollers 7 are detachably mounted on the bottom of each support tube 21. A push-pull rod 6 is movably connected to the front frame 1. A slider 24 that can slide up and down is provided on the support tube 21. The lower end of the front or rear side folding frame 3 is movably riveted to the slider 24, allowing the lower end of the side folding frame 3 to move up and down relative to the front or rear frame during folding. The rollers on the front frame are omnidirectional wheels, and the rollers on the rear frame are directional wheels.

[0039] The push-pull rod 6 includes a handle 61, a telescopic rod 62, and a connector 63. The handle 61 and the connector 63 are respectively installed at the upper and lower ends of the telescopic rod 62. The connector 63 is movably riveted to the lower horizontal tube of the front frame 1 and can rotate back and forth.

[0040] In this embodiment, the upper end of the vertical rod 41 is movably riveted to the upper connection point 34 between the middle of the side folding frame 3. The upper connection point 34 is the point where the upper ends of the two X-shaped main cross tubes 31 are movably riveted.

[0041] Example 2

[0042] like Figures 6a-6c As shown, unlike Embodiment 1, this embodiment provides a flat-folding campervan with a telescopic base frame. Its connecting rod 4 includes two vertical rods 41 and a lower horizontal rod 42. The vertical rods 41 are provided with grooves 41a for sliding connection with the connection point in the middle of the side folding frame. The upper end of each vertical rod 41 is movably riveted to a lower connection point 35 in the middle of a side folding frame. Specifically, the rivet passes through the lower connection point 35 and slides in the groove 41a, allowing the rivet to slide up and down within the groove 41a. The lower horizontal rod 42 is connected at both ends to the lower ends of the two vertical rods 41 and is located below the base folding frame 5. The lower connection point 35 is the point where the lower ends of the two X-shaped main cross tubes are movably riveted.

[0043] The frame is provided with a bag 8 without a top surface. The front and rear sides of the bag 8 are provided with first connecting parts 81 for detachable installation with the upper horizontal tube 22 on the front frame or the rear frame. The two sides are provided with second connecting parts 82 for detachable installation with the upper connecting points on the side folding frame. The first connecting parts 81 are fixed by magic tape. The lower side of the second connecting part 82 is provided with an opening covering the upper connecting points 34 between the two X-shaped main cross tubes. The bag 8 of the embodiment can also be applied to the frame of other embodiments.

[0044] In one structure, as shown in the frame of Figure 6a , the upper end of the left side or the right side of the side folding frame 3 is directly riveted with the upper end of the support tube 21, and the upper horizontal tube 22 is directly connected with the upper ends of the two support tubes. In another structure, as shown in the frame of Figure 6d , a fixing seat 25 is arranged on the top of each support tube 21, and the upper end of the left side or the right side of the side folding frame 3 is riveted with the fixing seat 25, and the upper horizontal tube 22 is connected with the fixing seat 25 on the upper end of the two support tubes.

[0045] Embodiment 3

[0046] As shown in Figure 7 , different from embodiment 1, the embodiment provides a flat folding camping vehicle with a telescopic chassis. The connecting boom 4 includes two vertical rods 41 and a lower horizontal rod 42. The vertical rod 41 is provided with a sliding groove 41a for sliding connection with the connecting point in the middle of the side folding frame 3. The upper end of the vertical rod 41 is riveted with the upper connecting point 34 in the middle of the side folding frame 3, and the lower connecting point 35 in the middle of the side folding frame 3 is slidingly connected with the sliding groove 41a. Specifically, the rivet on the lower connecting point 35 passes through the sliding groove 41a and can slide up and down.

[0047] Embodiment 4

[0048] As shown in Figure 8 , different from embodiment 1, the embodiment provides a flat folding camping vehicle with a telescopic chassis. The side folding frame includes a group of X-shaped main cross tubes 31, a group of X-shaped auxiliary cross tubes 32, and a group of connecting tubes 33. The X-shaped main cross tube 31 includes two main tubes which are riveted. The X-shaped auxiliary cross tube 32 includes a long tube 32a and a short tube 32b which are riveted. The two ends of the long tube 32a are respectively riveted with the upper end of the support tube of the front frame or the rear frame and the lower end of one main tube of the X-shaped main cross tube 31. The two ends of the short tube 32b are respectively riveted with the upper end of the other main tube of the X-shaped main cross tube 31 and one end of the connecting tube 33. The other end of the connecting tube 33 is riveted with the support tube 21 of the front frame 1 or the rear frame 2.

[0049] Embodiment 5

[0050] As shown in Figure 9As shown, different from the embodiment 2, this embodiment provides a flat-fold camping vehicle with telescopic chassis, the connecting boom 4 comprises two vertical poles 41 and a lower cross pole 42, the vertical poles 41 and the lower cross pole 42 are integrally formed, and the whole is a U-shaped tube.

[0051] Embodiment 6

[0052] As Figure 10 As shown, different from the embodiment 3, this embodiment provides a flat-fold camping vehicle with telescopic chassis, the connecting boom 4 comprises two vertical poles 41 and a lower cross pole 42, the vertical poles 41 and the lower cross pole 42 are integrally formed, and the whole is a U-shaped tube.

[0053] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, the present application is not limited to the above embodiments, without departing from the concept of the present application, it can also include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. A fold flat camper trailer having a telescoping chassis, including a frame, characterised in that, The frame comprises symmetrically arranged front frames, rear frames, symmetrically arranged two side folding frames, a connecting boom and a bottom folding frame, the side folding frame comprises at least one pair of X-shaped main cross pipes which are movably riveted, the upper end of the side folding frame is movably riveted with the front frame or the rear frame, and the lower end is movably connected with the front frame or the rear frame; the connecting boom comprises two vertical rods and a lower cross rod, the upper end of each vertical rod is movably connected with the connecting point in the middle of a side folding frame, and the lower end of the lower cross rod is connected with the lower ends of the two vertical rods and is located below the bottom folding frame. The bottom folding frame comprises a pair of bottom frames which are movably riveted, the bottom frame comprises two telescopic side pipes and two bottom cross pipes, the side pipe comprises an inner pipe and an outer pipe, and the two inner pipes and the two outer pipes are connected by a bottom cross pipe respectively; the inner pipes of the two bottom frames are movably riveted, and the outer pipes are movably riveted with the front frame or the rear frame.

2. The foldable camping trailer having a telescoping chassis of claim 1, wherein, The inner pipe is provided with a ball at the rear end, and the outer pipe is provided with a limiting hole at the front end, when the inner pipe is fully extended out of the outer pipe in the unfolded state, the ball passes through the limiting hole.

3. The foldable camping trailer with a telescopic chassis according to claim 1, wherein, The connecting boom further comprises a pipe plug, the pipe plug is installed on the inner side of the vertical rod, the front end of the pipe plug is embedded in the lower cross rod, and the side surface of the pipe plug is symmetrically provided with elastic flaps.

4. The foldable camping trailer having a telescoping chassis of claim 3, wherein, The elastic flaps are obliquely arranged, and the inner side is fixed on the side surface of the pipe plug, and the outer side is raised. Alternatively, the front end of the pipe plug is tapered.

5. The foldable camping trailer with a telescoping chassis of claim 1, wherein, The front frame or the rear frame comprises two symmetrical support pipes and upper and lower cross pipes connecting the two support pipes, the bottom of the support pipe is detachably provided with a roller; alternatively, the front frame is movably connected with a push-pull rod; alternatively, the frame is provided with a bag without a top surface, and the four side surfaces of the bag are detachably connected with the front frame, the rear frame and the two side folding frames respectively.

6. The foldable camping trailer with a telescoping chassis of claim 1, wherein, The two vertical rods and the lower cross rod are integrally formed as a U-shaped rod.

7. The foldable camping trailer with a telescoping chassis of claim 1, wherein, The vertical rod is provided with a sliding groove for sliding connection with the connecting point in the middle of the side folding frame, and the connecting point is an upper connecting point or a lower connecting point.

8. The flat folding camper trailer according to any one of claims 1 to 7, wherein, The upper end of the vertical rod is movably connected with the upper connecting point in the middle of the side folding frame; alternatively, the upper end of the vertical rod is slidingly connected with the lower connecting point in the middle of the side folding frame.

9. The flat folding camper trailer as claimed in any one of claims 1 to 7, wherein, The upper end of the vertical rod is movably connected with the upper connecting point in the middle of the side folding frame, and the lower end is slidingly connected with the lower connecting point in the middle of the side folding frame.

10. The flat-folding camping trailer of claim 1, wherein, The side folding frame comprises a group of X-shaped main cross pipes, a group of X-shaped auxiliary cross pipes and a group of connecting pipes, the X-shaped main cross pipe comprises two movably riveted main pipes, the X-shaped auxiliary cross pipe comprises a long pipe and a short pipe which are movably riveted, the two ends of the long pipe are movably riveted with the upper end of the front frame or the rear frame and the lower end of one main pipe of the X-shaped main cross pipe respectively, the two ends of the short pipe are movably riveted with the upper end of the other main pipe of the X-shaped main cross pipe and one end of the connecting pipe respectively, and the other end of the connecting pipe is movably riveted with the front frame or the rear frame.

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