Flat bottom type folding portable cart
By introducing folding rods and a base frame design into the bi-fold folding trolley, the load-bearing pressure is distributed and the bottom is kept flat, solving the problems of insufficient load-bearing capacity and uneven bottom, and achieving stronger load-bearing capacity and aesthetic effect.
Patent Information
- Application Number
- CN202520710038.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Existing bi-fold trolleys have insufficient bottom load-bearing capacity, especially when carrying heavy objects, they are prone to breakage at the joints, and the bottom is uneven when opened.
The design employs two sets of folding rods between the front and rear frames, combined with the design of the first and second base frames. The load-bearing pressure is distributed through vertical and bottom rods, and support rods are installed at the bottom to ensure flatness and enhance the bottom support structure.
It improves the load-bearing capacity of the bottom of the cart, ensures a flat bottom, avoids the limitations of the traditional single support at the bottom of the cart, and enhances structural stability and aesthetics.
Smart Images
Figure CN223905079U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cart technical field, especially in a kind of flat bottom formula folding portable cart. BACKGROUND
[0002] In recent years, cart is widely applied in daily life, logistics transportation and outdoor activities due to its portability and multifunctionality, in order to facilitate folding storage, suitable for short-distance transportation, and many foldable carts have appeared on the market at present, and the folding mode is mainly foldable or gathered, and most of them adopt the combination of rectangular frame and supporting chassis, and realize quick folding through folding assembly and corner piece.
[0003] But the folding structure above is mostly connected with each other by movable piece, compared with the cart of traditional non-folding structure, its bottom lacks effective support, and the carrying capacity is limited, especially for the cart of foldable type, only two chasses support the bottom, and when carrying heavy articles, the connection part is prone to breakage.
[0004] The technical problem to be solved by the present application is how to enhance the carrying capacity of the bottom of the foldable cart of foldable type while ensuring the flatness of the bottom in the open state. INVENTION CONTENTS
[0005] In order to overcome the shortcomings of the prior art, the utility model aims at providing a foldable cart of foldable type with strong carrying capacity and flat and beautiful bottom.
[0006] The utility model employs the technical scheme that a flat bottom formula folding portable cart, including front side frame and rear side frame, be equipped with two groups of folding rod groups between front side frame and rear side frame, the first chassis of being equipped with with its rotary connection at the bottom of front side frame, the second chassis of being equipped with with its rotary connection at the bottom of rear side frame, the rivet of being equipped with with both connections between the first chassis and the second chassis, each folding rod group is equipped with with the rotary cooperation of vertical rod, the bottom of vertical rod is equipped with with bottom bar, the bottom bar is equipped with with the support rod of being located at the bottom of rivet between two bottom bars.
[0007] The setting of two groups of folding rod groups makes the front side frame and the rear side frame can be close to each other, and the setting of the first chassis and the second chassis at the bottom makes the bottom can be folded in a foldable type, and the bottom bar at the bottom of vertical rod is arranged at the bottom of the connection between the first chassis and the second chassis, so as to distribute the carrying pressure of the bottom to the folding rod group through the vertical rod, thereby increasing the carrying capacity of the bottom of the cart, and the support rod at the bottom of the connection between the first chassis and the second chassis can ensure the flatness of the bottom of the cart, and the bottom is still flat after the cart cloth cover is put on.
[0008] In some embodiments, the folding rod set comprises a first folding rod and a third folding rod arranged from top to bottom and rotationally connected with the front side frame, and a second folding rod and a fourth folding rod arranged from top to bottom and rotationally connected with the rear side frame.
[0009] In some embodiments, the first folding rod and the fourth folding rod are rotationally connected, and the second folding rod and the third folding rod are rotationally connected.
[0010] In some embodiments, the vertical rod is located at the connection between the third folding rod and the fourth folding rod, and the vertical rod is rotationally connected with the bottom rod.
[0011] In some embodiments, the bottom rod and the supporting rod are integrally formed, and the supporting rod has a U-shaped structure.
[0012] In some embodiments, when the folding rod set is in a fully unfolded state, the first bottom frame, the second bottom frame and the bottom rod are coplanar.
[0013] In some embodiments, the front side frame is fixed with a horizontal rod, one side of the horizontal rod is fixed with a horizontal connecting frame, the outer side of the horizontal connecting frame is provided with a vertical connecting frame rotationally connected therewith, and the top of the vertical connecting frame is fixed with a pull rod.
[0014] In some embodiments, a pin is provided between the horizontal connecting frame and the vertical connecting frame and is pinned with both, and the outer side of the pin is sleeved with a spring abutting against the vertical connecting frame.
[0015] The utility model discloses a beneficial effect lies in: through the bottom rod of first bottom frame and second bottom frame bottom, the load bearing pressure of the bottom of the cart is shared by the vertical rod to the lateral support, avoid the limitation of traditional cart bottom single support, and only set up the concave place of supporting rod one, and the bottom rod, first bottom frame and second bottom frame are in the same plane, after the cart cloth is put on, the bottom does not appear the long strip convex, fully guarantee the bottom plane of the cart flat shape. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the three-dimensional front view structure schematic diagram of the utility model;
[0017] Figure 2 It is the main view structure schematic diagram of the utility model;
[0018] Figure 3 It is the top view structure schematic diagram of the utility model;
[0019] Figure 4 It is the three-dimensional rear view structure schematic diagram of the utility model;
[0020] Figure 5 It is the Figure 1 The local amplification structure schematic diagram of A place in the utility model;
[0021] Figure 6 The utility model discloses a Figure 4 Partial enlarged structure schematic diagram of B place in middle.
[0022] In the drawing: 1, front side frame;11, cross bar;12, pull rod;13, horizontal connecting frame;14, vertical connecting frame;15, pin;16, spring;2, rear side frame;3, folding rod group;31, first folding rod;32, second folding rod;33, third folding rod;34, fourth folding rod;4, vertical rod;41, bottom rod;42, first bottom frame;43, second bottom frame;44, supporting rod;45, rivet. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0024] Please refer to Figure 1 、 Figure 2 and Figure 4 , the utility model provides a kind of technical scheme: a flat bottom type folding portable cart, including front side frame 1 and rear side frame 2, two sides between front side frame 1 and rear side frame 2 are respectively equipped with folding rod group 3, folding rod group 3 includes with front side frame 1 movable riveting and sequentially arranged first folding rod 31 and third folding rod 33 from top to bottom, folding rod group 3 also includes with rear side frame 2 movable riveting and sequentially arranged second folding rod 32 and fourth folding rod 34 from top to bottom, wherein, first folding rod 31 and fourth folding rod 34 movable riveting, second folding rod 32 and third folding rod 33 movable riveting, third folding rod 33 and fourth folding rod 34 movable riveting.
[0025] Please refer to Figures 1 to 4 and Figure 6 , the bottom of front side frame 1 is equipped with two first bottom frames 42 movable riveting with it, the bottom of rear side frame 2 is equipped with two second bottom frames 43 movable riveting with it, rivet 45 is equipped between first bottom frame 42 and second bottom frame 43 and penetrates both, two first bottom frames 42 and two second bottom frames 43 are distributed in X shape, simultaneously, the connecting place of third folding rod 33 and fourth folding rod 34 is equipped with vertical rod 4, the bottom of vertical rod 4 is equipped with bottom rod 41, supporting rod 44 in U shape is equipped between two bottom rods 41, when folding rod group 3 is in completely unfolded state, first bottom frame 42, second bottom frame 43 and bottom rod 41 are located in the same plane.
[0026] Please refer to Figures 1 to 5The front side frame 1 is fixed with a horizontal rod 11 at the bottom, one side of the horizontal rod 11 is fixed with a horizontal connecting frame 13, the outer side of the horizontal connecting frame 13 is provided with a vertical connecting frame 14 which is rotationally matched with the horizontal connecting frame 13, the top of the vertical connecting frame 14 is fixed with a pull rod 12, the horizontal connecting frame 13 and the vertical connecting frame 14 are provided with a pin 15 which is pinned with both, the outer side of the pin 15 is sleeved with a spring 16 which is abutted with the vertical connecting frame 14.
[0027] Finally, it should be noted that the above only for the preferred examples of the present application, and is not intended to limit the present application, although the foregoing detailed description of the present application with reference to the foregoing examples, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included within the scope of the present application.
Claims
1. A flat-bottomed folding portable trolley comprising a front side frame (1) and a rear side frame (2), characterized in that, Two groups of folding rod groups (3) are arranged between the front side frame (1) and the rear side frame (2), the bottom of the front side frame (1) is provided with a first bottom frame (42) rotatably connected thereto, the bottom of the rear side frame (2) is provided with a second bottom frame (43) rotatably connected thereto, the first bottom frame (42) and the second bottom frame (43) are provided with a rivet (45) connected thereto, each of the folding rod groups (3) is provided with a vertical rod (4) rotatably connected thereto, the bottom of the vertical rod (4) is provided with a bottom rod (41), and two bottom rods (41) are provided with a supporting rod (44) located directly below the rivet (45).
2. A flat-bottomed folding portable trolley according to claim 1, wherein, The folding rod group (3) comprises a first folding rod (31) and a third folding rod (33) arranged from top to bottom and rotatably connected with the front side frame (1), and a second folding rod (32) and a fourth folding rod (34) arranged from top to bottom and rotatably connected with the rear side frame (2).
3. A flat-bottomed folding portable trolley according to claim 2, wherein, The first folding rod (31) and the fourth folding rod (34) are rotatably connected, and the second folding rod (32) and the third folding rod (33) are rotatably connected.
4. A flat-bottomed folding portable trolley according to claim 3, wherein, The vertical rod (4) is located at the connection between the third folding rod (33) and the fourth folding rod (34), and the vertical rod (4) is rotatably connected with the bottom rod (41).
5. The flat-bottomed folding portable cart of claim 1, wherein, The bottom rod (41) and the supporting rod (44) are integrally formed, and the supporting rod (44) is in a U-shaped structure.
6. A flat-bottomed folding portable trolley according to claim 5, wherein, When the folding rod group (3) is in a fully expanded state, the first bottom frame (42), the second bottom frame (43) and the bottom rod (41) are coplanar.
7. A flat-bottomed folding portable trolley according to claim 1, wherein, The bottom of the front side frame (1) is fixed with a horizontal rod (11), one side of the horizontal rod (11) is fixed with a horizontal connecting frame (13), the outer side of the horizontal connecting frame (13) is provided with a vertical connecting frame (14) rotatably connected thereto, and the top of the vertical connecting frame (14) is fixed with a pull rod (12).
8. A flat-bottomed folding portable trolley according to claim 7, characterised in that, The horizontal connecting frame (13) and the vertical connecting frame (14) are provided with a pin (15) pin-connected thereto, and the outer side of the pin (15) is provided with a spring (16) abutting against the vertical connecting frame (14).