Camp trailer

Abstract

A camp trailer comprises a trailer frame and a plurality of wheel assemblies, the trailer frame comprises a vertically-arranged front support, a vertically-arranged rear support and a bottom frame folding set connected between the front support and the rear support, and further comprises at least one telescopic supporting frame which is connected between the front support and the rear support and can stretch or retract. When the frame is in the unfolding position, the bottom frame folding set is unfolded, the telescopic supporting frame is stretched, and therefore the front support and the rear support are stably unfolded, and when the frame is in the folding position, the bottom frame folding set is folded, and the telescopic supporting frame is shortened. Therefore, the front support and the rear support are drawn close and folded. The structure is simple, operation is convenient, manufacturing and production are convenient, and the production cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of household strollers, specifically relating to a camping trailer. Background Technology

[0002] The camping trailer includes a frame with an unfolded position and a folded position, multiple wheel assemblies at the bottom of the frame, U-shaped push handles and pull handles on both sides of the frame, and a cloth bag frame on the frame for carrying goods in the unfolded position, bringing convenience to outdoor life and adding more enjoyment.

[0003] As disclosed in patent publication number CN 213228749 U, a camping trailer and its folding frame are provided, including: two front uprights and two rear uprights, with a set of side cross slide rod assemblies between the front and rear uprights on the same side; the two upper branches of the side cross slide rod assembly are respectively hinged to the upper ends of the front and rear uprights, and the two lower branches are respectively slidably connected to the rods of the front and rear uprights. The frame has a relatively large number of rods, making its structure somewhat complex. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a camping trailer.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a camping trailer, including a frame having an unfolded position and a folded position, and a plurality of wheel assemblies disposed at the bottom of the frame. The frame includes a vertically arranged front support, a vertically arranged rear support, and a base frame folding assembly connected between the front support and the rear support, which can be folded or unfolded in the front-rear direction. It also includes at least one telescopic support connected between the front support and the rear support, which can be extended or shortened. When the frame is in the unfolded position, the base frame folding assembly unfolds, and the telescopic support extends, thereby stably spreading the front support and the rear support apart. When the frame is in the folded position, the base frame folding assembly folds and closes, and the telescopic support shortens, thereby bringing the front support and the rear support closer together.

[0006] In some embodiments, at least one of the telescopic supports is disposed at the bottom of the frame, and / or the left side of the frame, and / or the right side of the frame.

[0007] In some embodiments, at least one of the telescopic supports is inclinedly disposed at the bottom of the frame, and / or at the left side of the frame, and / or at the right side of the frame, and the two ends of the telescopic support are respectively rotatably disposed with the front support and the rear support.

[0008] In some embodiments, at least one of the telescopic supports is disposed at the bottom of the frame, and its two ends are respectively pivotally connected between the front support and the rear support via corresponding bottom end shafts along a diagonal inclined direction, the bottom end shafts extending in a vertical direction, and the telescopic support is located below the folding assembly of the base frame; and / or at least one of the telescopic supports is disposed on the left side of the frame, and its two ends are respectively pivotally connected between the front support and the rear support via corresponding left end shafts along an inclined direction, the axis of the left end shaft extending in a horizontal left-right direction; and / or at least one of the telescopic supports is disposed on the right side of the frame, and its two ends are respectively pivotally connected between the front support and the rear support via corresponding right end shafts along an inclined direction, the axis of the right end shaft extending in a horizontal left-right direction.

[0009] In some embodiments, two telescopic supports are arranged in an X-shape at the bottom of the frame; or two telescopic supports are arranged in an X-shape at the left side of the frame; or two telescopic supports are arranged in an X-shape at the right side of the frame.

[0010] In some embodiments, when the frame is in the unfolded position, there is a spatial angle α between the telescopic support and the center line of the frame in the front-rear direction, and the spatial angle α is 30°-60°.

[0011] In some embodiments, the front and rear sides of the base frame folding assembly are respectively pivotally connected to the corresponding front and rear supports via bottom side pivots. The base frame folding assembly includes at least two base plates, and the at least two base plates are respectively pivotally connected to each other via corresponding bottom folding pivots. The base frame folding assembly also includes a limiting mechanism disposed between two adjacent base plates.

[0012] In some embodiments, reinforcing blocks are fixed on the base plate frame and / or the telescopic support frame. When the vehicle frame is in the unfolded position, the corresponding base plate frame and the telescopic support frame are tightly fitted together by the reinforcing blocks.

[0013] In some embodiments, the telescopic support is formed by at least two telescopic rods in sliding engagement.

[0014] In some embodiments, the telescopic support is provided with a length limiting mechanism to maintain a stable length.

[0015] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: In the unfolded position, the base frame folding assembly unfolds in a straight line, and the front and rear supports are respectively located on the front and rear sides of the base frame folding assembly in an H shape. The telescopic support is spread out and set between the front and rear supports, thereby unfolding and locking the entire frame. When folding, the base frame folding assembly folds back and forth, and at the same time the telescopic support shortens, and the front and rear supports move closer together, thereby folding the entire frame. The structure is simple, the operation is convenient, the manufacturing is easy, and the production cost is low. Attached Figure Description

[0017] Appendix Figure 1 A three-dimensional schematic diagram of the principle structure of the camp trailer in its unfolded position;

[0018] Appendix Figure 2 A three-dimensional schematic diagram illustrating the principle and structure of the frame during the transition between the unfolded and folded positions;

[0019] Appendix Figure 3 A three-dimensional schematic diagram of the frame in the folded position;

[0020] Appendix Figure 4 Top view of the principle structure of the camp trailer in its unfolded position (Example 1);

[0021] Appendix Figure 5 Top view of the principle structure of the camp trailer in its unfolded position (Example 2);

[0022] Appendix Figure 6 Top view of the principle structure of the camp trailer in its unfolded position (Example 3);

[0023] Appendix Figure 7 Top view of the principle structure of the camp trailer in its unfolded position (Example 4);

[0024] The components include: 1. Frame; 11. Front support; 12. Rear support; 13. Underframe folding assembly; 131. Base plate frame; X31. Bottom side axle; X32. Bottom folding axle; 14. Telescopic support frame; 141. Telescopic rod; X41a. Bottom side end axle; X41b. Left end axle; X41c. Right end axle; 2. Wheel assembly. Detailed Implementation

[0025] As shown in the accompanying drawings, a camping trailer includes a frame 1 having an unfolded position and a folded position, multiple wheel assemblies disposed at the bottom of the frame 1, and a cloth cover fitted onto the frame 1. The frame 1 includes a vertically arranged front support 11 and a vertically arranged rear support 12. The multiple wheel assemblies include two front wheel assemblies respectively disposed at the bottom of the left and right sides of the front support 11, and two rear wheel assemblies respectively disposed at the bottom of the left and right sides of the rear support 12.

[0026] Typically, not shown in the diagram, one of the front bracket 11 and the rear bracket 12 is equipped with a U-shaped horizontal push handle, and the other of the two is equipped with a pull handle.

[0027] Frame 1 also includes:

[0028] The base frame folding assembly 13 can be folded or unfolded in the front and rear directions. It is connected between the front support 11 and the rear support 12. In the unfolded position, the base frame folding assembly 13 unfolds in a straight line. The front support 11 and the rear support 12 are located on the front and rear sides of the base frame folding assembly 13, respectively, and the three of them form an H shape.

[0029] Frame 1 also includes:

[0030] At least one telescopic support 14, which can be extended or shortened, is connected between the front support 11 and the rear support 12. The telescopic support 14 is provided with a length limiting mechanism that makes the frame 1 stable in the unfolded position. That is, by simultaneously unfolding or folding a set of bottom folding groups 13 and at least one set of telescopic control frames 14, the front support 11 and the rear support 12 are stretched or pulled together. When the bottom folding group 13 and the telescopic control frame 14 are positioned in the unfolded position, the frame can be stabilized in the unfolded position.

[0031] The detailed structure is as follows:

[0032] Example 1: As shown in the attached document Figure 1-4 As shown, the frame 1 includes a front bracket 11 that is vertically arranged and has front wheel assemblies on the bottom of the left and right sides respectively, a rear bracket 12 that is vertically arranged and has rear wheel assemblies on the bottom of the left and right sides respectively, a base frame folding assembly 13 that can be folded or unfolded in the front and rear directions, and a telescopic support frame 14 that can be extended or shortened.

[0033] In this embodiment, the base frame folding assembly 13 includes two base plates 131 arranged one in front of the other. The two base plates 131 are connected by a pivot point, namely a bottom folding shaft X32. The front side of the front base plate 131 is pivotally connected to the front support 11 via the bottom side shaft X31, and the rear side of the rear base plate 131 is pivotally connected to the rear support 12 via the bottom side shaft X31. The center lines of the bottom side shaft X31 and the bottom folding shaft X32 extend in the left and right directions, respectively. A limiting mechanism is provided between the two base plates 131 to prevent the bottom folding shaft X32 from moving further downward in the flattened position. That is, a one-way rotation limiting joint is formed at the bottom folding shaft X32. After flattening, only the upward movement of the bottom folding shaft X32 can cause the base frame folding assembly 13 to fold forward and backward. The unfolding limiting mechanism is a commonly used mechanism in mechanical structures and will not be described in detail here. Without illustration, it is also possible for the base frame folding assembly 13 to consist of three base plate frames 131 connected sequentially via a bottom folding pivot. For example, the two long base plate frames at the front and back are respectively pivotally connected to the short base plate frame in the middle. The base frame folding assembly 13 forms two pivot points, and a limiting mechanism is set at each of the two pivot points to form a one-way rotation limiting switch. When the base frame folding assembly 13 is folded and closed, the short base plate frame in the middle moves upward, causing the two long base plate frames at the front and back to fold and close relative to each other.

[0034] The telescopic support 14 is formed by two telescopic rods 141 slidingly engaging. In this embodiment, the telescopic support 14 is inclinedly disposed at the bottom of the frame 1 and located below the underframe folding assembly 13. Specifically, the telescopic support 14 is pivotally connected between the front support 11 and the rear support 12 along a diagonally inclined direction. One end of the telescopic support 14 is pivotally connected to the right side of the front support 11 via a bottom end shaft X41a, and the other end of the telescopic support 14 is pivotally connected to the left side of the rear support 12 via another bottom end shaft X41a. The centerlines of the two bottom end shafts X41a extend in the vertical direction.

[0035] When the frame 1 is in the unfolded position, there is a spatial angle α between the telescopic support 14 and the center line of the frame 1 in the front-rear direction. In this embodiment, the spatial angle α is 30°-40°. This angle makes the unfolding more stable.

[0036] When the frame 1 is in the unfolded position, the base frame folding assembly 13 unfolds, limiting the distance between the front support 11 and the rear support 12. The telescopic support 14 extends, and the combined action of the telescopic support 14 and the base frame folding assembly 13 stably stretches the front support 11 and the rear support 12 apart. When the frame 1 is in the folded position, the base frame folding assembly 13 folds back and forth, and the telescopic support 14 shortens back and forth, thus bringing the front support 11 and the rear support 12 closer together. The telescopic support 14 is provided with a length limiting mechanism that ensures the frame 1 is stable in the unfolded position. The length limiting mechanism can be a limiting mechanism that prevents further extension or shortening after being pulled out to its limit, preferably a locking mechanism. When the frame is normally unfolded, the locking mechanism locks the extended telescopic support 14, preventing it from shortening. The frame unfolds stably. The locking mechanism of the telescopic rods is not the focus of this utility model; any mechanism that can lock the two sliding telescopic rods is applicable and will not be elaborated upon.

[0037] Preferably, not shown in the diagram, a reinforcing support block is fixed on the base plate frame 131 or the telescopic support frame 14. When the frame 1 is in the unfolded position, the reinforcing support block is precisely positioned between the base plate frame 131 and the telescopic support frame 14, forming a tight fit. In the unfolded position, the base frame folding assembly 13 and the telescopic support frame 14 become a single load-bearing body through the reinforcing support block, resulting in greater rigidity after unfolding.

[0038] Example 2, as shown in the appendix Figure 5 As shown, the difference between Embodiment 2 and Embodiment 1 is that the installation position of the telescopic support 14 is different. One end of the telescopic support 14 is connected to the left side of the front support 11 via a bottom end shaft X41a pivot, and the other end of the telescopic support 14 is connected to the right side of the rear support 12 via another bottom end shaft X41a pivot. The center lines of the two bottom end shafts X41a extend in the vertical direction respectively.

[0039] Example 3, as shown in the appendix Figure 6 As shown, the difference between Embodiment 3 and Embodiment 1 is that the installation position of the telescopic support 14 is different. One telescopic support 14 is located on the left side of the frame 1, and both ends are pivotally connected between the upper left side of the front support 11 and the lower left side of the rear support 12 via the corresponding left end shaft X41b along the inclined direction. The axis of the left end shaft X41b extends in the horizontal left and right direction.

[0040] Example 4, as shown in the appendix Figure 7 As shown, the difference between Embodiment 4 and Embodiment 1 is that the installation position of the telescopic support 14 is different. One telescopic support 14 is located on the right side of the frame 1, and both ends are pivotally connected between the upper right side of the front support 11 and the lower right side of the rear support 12 via the corresponding right end shaft X41c along the inclined direction. The axis of the right end shaft X41b extends in the horizontal left and right direction.

[0041] The above four embodiments each use only one telescopic support frame 14 (not shown). Two independent telescopic support frames 14 can be used at each of the three locations: the bottom, left side, and right side of the frame. For example, the two independent telescopic support frames 14 can be arranged in an X-shape at the bottom of the frame 1, or at the left side of the frame 1, or at the right side of the frame 1. This provides relatively higher rigidity, thus creating a seating space between the left and right sides.

[0042] Alternatively, a single telescopic support 14 or two telescopic supports 14 arranged in an X-shape can be installed at three locations: the bottom of the frame, the left side, and the right side, which also provides strong rigidity when deployed.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A camp trailer comprising a frame (1) having an unfolded position and a folded position, a plurality of wheel assemblies arranged at the bottom of the frame (1), characterized in that: The frame (1) comprises a vertically arranged front support (11), a vertically arranged rear support (12), a bottom frame folding group (13) connected between the front support (11) and the rear support (12) and capable of being folded or unfolded in the front-rear direction, and at least one telescopic support (14) connected between the front support (11) and the rear support (12) and capable of being lengthened or shortened, When the frame (1) is in the unfolded position, the bottom frame folding group (13) is unfolded, and the telescopic support (14) is lengthened, thereby stably supporting the front support (11) and the rear support (12) apart; when the frame (1) is in the folded position, the bottom frame folding group (13) is folded, and the telescopic support (14) is shortened, thereby pulling the front support (11) and the rear support (12) close.

2. The campground trailer of claim 1, wherein: At least one telescopic support (14) is arranged at the bottom of the frame (1), and / or at the left side of the frame (1), and / or at the right side of the frame (1).

3. The campground trailer of claim 1, wherein: At least one telescopic support (14) is arranged at the bottom of the frame (1) in an inclined manner, and / or at the left side of the frame (1) in an inclined manner, and / or at the right side of the frame (1) in an inclined manner, and both ends of the telescopic support (14) are rotatably arranged with the front support (11) and the rear support (12).

4. The campground trailer of claim 1, wherein: At least one telescopic support (14) is arranged at the bottom of the frame (1), and both ends thereof are pivotally connected between the front support (11) and the rear support (12) through corresponding bottom side end shafts (X41a) in a diagonal inclined direction, and the bottom side end shafts (X41a) extend in the vertical direction, and the telescopic support (14) is located below the bottom frame folding group (13); At least one telescopic support (14) is arranged at the left side of the frame (1), and both ends thereof are pivotally connected between the front support (11) and the rear support (12) through corresponding left side end shafts (X41b) in an inclined direction, and the axis of the left side end shafts (X41b) extends in the horizontal left-right direction; At least one telescopic support (14) is arranged at the right side of the frame (1), and both ends thereof are pivotally connected between the front support (11) and the rear support (12) through corresponding right side end shafts (X41c) in an inclined direction, and the axis of the right side end shafts (X41c) extends in the horizontal left-right direction.

5. The camp trailer according to claim 4, characterized in that: Two telescopic supports (14) are arranged in an X-shaped cross at the bottom of the frame (1); Two telescopic supports (14) are arranged in an X-shaped cross at the left side of the frame (1); Two telescopic supports (14) are arranged in an X-shaped cross at the right side of the frame (1).

6. The camp trailer according to any one of claims 3-5, wherein: When the frame (1) is in the unfolded position, the telescopic support (14) and the center line of the frame (1) in the front-rear direction form a space included angle a, and the space included angle a is 30°-60°.

7. The campground trailer of claim 1, wherein: The front and rear side edges of the bottom folding group (13) are respectively pivotally connected to the corresponding front support (11) and rear support (12) through a bottom side edge shaft (X31), the bottom folding group (13) comprises at least two bottom plate supports (131), and the adjacent bottom plate supports (131) are respectively pivotally connected through a corresponding bottom folding shaft (X32).

8. The camp trailer of claim 7, wherein: The bottom plate support (131) and / or the telescopic support (14) is fixed with a reinforcing support block, and when the frame (1) is in the unfolded position, the corresponding bottom plate support (131) and the telescopic support (14) are abuttingly matched through the reinforcing support block.

9. The campground trailer of claim 1, wherein: The telescopic support (14) is composed of at least two telescopic rods (141) in sliding fit.

10. The camp trailer of claim 1, wherein: The telescopic support (14) is provided with a length limiting mechanism for keeping the length stable.

Images