Foldable trolley

Abstract

The utility model relates to a foldable trolley, and relates to the field of trolleys. The foldable trolley comprises two chassis assemblies and two side frames, one ends of the two chassis assemblies are rotationally connected, the other ends of the two chassis assemblies are rotationally connected with the two side frames respectively, the chassis assemblies are connected with two sets of reinforcing assemblies, each reinforcing assembly comprises two reinforcing rods and two folding arms, and the two reinforcing rods and the two folding arms are connected with each other. The reinforcing rods are located below the chassis assembly, one ends of the two reinforcing rods are rotationally connected with the two side frames respectively, the other ends of the two reinforcing rods are rotationally connected with each other, the two folding arms intersect with each other, one ends of the two folding arms are rotationally connected with the two reinforcing rods respectively, and the other ends of the two folding arms are rotationally connected with the two side frames respectively. And the other ends of the two folding arms are rotationally connected with the two chassis assemblies respectively. The reinforcing assembly has the effect of improving the bearing capacity and the folding strength of the chassis assembly.

Description

Technical Field

[0001] This application relates to the field of handcarts, and more particularly to a foldable handcart. Background Technology

[0002] In recent years, family outdoor activities have become increasingly popular, especially travel and camping. When engaging in outdoor activities, people typically carry many items, and families with children often bring strollers. However, the emergence of foldable strollers has made outings much more convenient. Foldable strollers can not only carry belongings but also provide a place for children to ride.

[0003] Existing foldable strollers generally include a frame, chassis, wheels, and handles. The frame and chassis are typically rectangular structures. The frame has a fabric cover for placing items, and the chassis supports the cover. The chassis is usually formed by the rotating connection of two side frames to allow it to fold. When folding, the two sides of the frame fold upwards from the rotating connection in the middle of the chassis, bringing them closer together. However, in existing technology, the chassis has to bear the weight of the items and is frequently folded, resulting in relatively weak overall chassis strength. When items are heavy or children are riding on it, the chassis is prone to deformation or even structural damage. After repeated folding, the rotating connection of the chassis may break. Utility Model Content

[0004] To address the problem of weak overall chassis strength leading to easy chassis damage, this application provides a foldable handcart.

[0005] The foldable handcart provided in this application adopts the following technical solution:

[0006] A foldable handcart includes two chassis assemblies and two side frames. One end of each chassis assembly is rotatably connected to the other end of each chassis assembly, which is rotatably connected to the two side frames respectively. The handcart also includes two sets of reinforcing assemblies connected to each chassis assembly. Each reinforcing assembly includes two reinforcing rods and two folding arms. The reinforcing rods are located below the chassis assemblies. One end of each reinforcing rod is rotatably connected to the two side frames respectively, and the other ends of the reinforcing rods are rotatably connected to each other. The two folding arms cross each other, with one end of each folding arm rotatably connected to the two reinforcing rods respectively, and the other ends of each folding arm rotatably connected to the two chassis assemblies respectively.

[0007] By adopting the above technical solution, one end of the reinforcing rod is rotatably connected to the side frame, and the other end of the reinforcing rod is rotatably connected to each other. The folding arms are arranged in a cross configuration, with one end of the folding arm connected to the chassis assembly and the other end of the folding arm connected to the reinforcing rod. The reinforcing rod and the folding arm provide support for the chassis assembly, and both the reinforcing rod and the folding arm can be folded. The reinforcing assembly improves the load-bearing capacity of the chassis while also improving the folding strength and stability.

[0008] Preferably, each chassis assembly includes a pair of parallel support rods and a support frame fixedly connected between the two support rods. The pair of support rods on the chassis assembly closer to the handle is a first support rod, and the pair of support rods on the chassis assembly farther from the handle is a second support rod. One end of the first support rod and one end of the second support rod are rotatably connected. The other ends of the first support rod and the second support rod are respectively rotatably connected to the two side frames. The support frame fixed between the two first support rods is a first support frame, and the support frame fixed between the two second support rods is a second support frame. A pair of parallel reinforcing arms are fixed on the side of the first support frame facing the connection between the two chassis assemblies. The reinforcing arms are parallel to the first support rods. One end of the reinforcing arm is fixed to the first support frame, and the other end of the reinforcing arm is coaxially rotatably connected to the second support rod.

[0009] Preferably, the second support frame has a pair of parallel connecting arms fixed on the side facing the connection between the two chassis assemblies. The connecting arms are parallel to the reinforcing arms, and one end of each of the two folding arms of each reinforcing assembly is rotatably connected to a reinforcing arm and a connecting arm, respectively.

[0010] Preferably, the side frame includes several horizontal and vertical columns fixedly connected. One end of the support rod is fixed to the vertical column of the side frame. Each of the two side frames has a horizontal column located below the chassis assembly. The horizontal column located below the chassis assembly extends towards the ground and has a connecting vertical column. One end of the connecting vertical column is fixed to the horizontal column below the chassis assembly. One end of the reinforcing rod is rotatably connected to the connecting vertical column.

[0011] Preferably, the reinforcing rod has a bend at one end near the connecting vertical column, and the bend of the reinforcing rod provides space for the horizontal column below the chassis assembly when folded.

[0012] Preferably, a fixing strip is provided at the pivot of the first support rod and the second support rod, and the fixing strip is fixedly connected to the first support rod and the reinforcing arm.

[0013] Preferably, a fixing block is fixedly connected between the first support rod and the reinforcing arm.

[0014] Preferably, the two support frames, the two first support rods, and the two second support rods enclose a hollow region.

[0015] Preferably, the support frame includes several fixedly connected horizontal and vertical bars, with both ends of the vertical bars of the support frame fixedly connected to a pair of support rods, and one end of the reinforcing arm and the connecting arm fixedly connected to the vertical bars of the support frame.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] The chassis has high overall mechanical strength and is not easily damaged. Reinforcing components are provided under the chassis components. The setting of reinforcing rods, folding arms and reinforcing arms can increase the load-bearing strength and folding strength of the chassis.

[0018] It occupies little space, has a high degree of folding and storage, and both the chassis and reinforcing components can be folded in half. The reinforcing rod has a bend to provide storage space. The overall folding degree is high and it is easy to store.

[0019] The hollow area formed by the two support frames, two first support rods, and two second support rods allows children to stick their feet out, making it more comfortable for children to ride. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the foldable trolley in the unfolded state in the embodiments of this application.

[0021] Figure 2 This is a top view of the foldable trolley in the embodiment of this application.

[0022] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle.

[0023] Figure 4 This is a three-dimensional structural diagram of the foldable trolley in a semi-folded state in an embodiment of this application.

[0024] Figure 5 yes Figure 1 Enlarged diagram of point B in the middle.

[0025] Figure 6 This is a three-dimensional structural diagram of the foldable trolley in the fully folded state according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Chassis assembly; 2. Frame assembly; 3. Reinforcing component; 21. Side frame; 11. Chassis component; 31. Reinforcing bar; 32. Folding arm; 111. Support bar; 112. Support frame; 113. First support bar; 114. Second support bar; 115. First support frame; 116. Second support frame; 12. Reinforcing arm; 13. Fixing strip; 14. Fixing block; 15. Connecting arm; 311. First reinforcing bar; 312. Second reinforcing bar; 321. First folding arm; 322. Second folding arm; 211. First crossbar; 212. Connecting vertical bar; 313. Bending point; 16. Hollow area. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6This application will be described in further detail.

[0028] This application discloses a foldable handcart. (See also...) Figure 1 The foldable trolley includes a chassis assembly 1, a frame assembly 2, and reinforcing components 3. The chassis assembly 1 is used for load-bearing. The frame assembly 2 includes two side frames 21 and other frame components. Both ends of the chassis assembly 1 are rotatably connected to the two side frames 21. The frame assembly 2 forms the frame structure of the foldable trolley. The two side frames 21 can be fitted with cloth covers for placing items. Two sets of reinforcing components 3 are provided. The reinforcing components 3 are connected to the bottom of the chassis assembly 1, and both ends of the reinforcing components 3 are rotatably connected to the two side frames 21. The reinforcing components 3 are used to increase the support of the chassis assembly 1 to improve the overall mechanical strength.

[0029] The chassis assembly 1 includes two chassis components 11, one end of which is rotatably connected to two side frames 21, and the other ends of which are rotatably connected to each other. Each set of reinforcing components 3 includes two reinforcing rods 31 and two folding arms 32. One end of each of the two reinforcing rods 31 is rotatably connected to the two side frames 21, and the other ends of which are rotatably connected to each other. The two folding arms 32 of each set of reinforcing components 3 cross each other, one end of which is rotatably connected to each of the two reinforcing rods 31, and the other ends of which are rotatably connected to the two chassis components 11.

[0030] Reference Figure 1 and Figure 2 Each chassis assembly 11 includes a pair of parallel support rods 111 and a support frame 112 fixedly connected between the two support rods 111. Figure 2 Taking the direction as an example, a pair of support rods 111 on the chassis assembly 11 near the handle are the first support rods 113, and a pair of support rods 111 on the chassis assembly 11 away from the handle are the second support rods 114. One end of the first support rod 113 and one end of the second support rod 114 are rotatably connected, and the other ends of the first support rod 113 and the second support rod 114 are rotatably connected to the two side frames 21 respectively.

[0031] Reference Figure 2 and Figure 3A support frame 112 fixed between two first support rods 113 is called a first support frame 115, and a support frame 112 fixed between two second support rods 114 is called a second support frame 116. A pair of parallel reinforcing arms 12 are fixed to the side of the first support frame 115 facing the connection point of the two chassis assemblies 11. The two reinforcing arms 12 are parallel to the first support rods 113. One end of each reinforcing arm 12 is fixed to the first support frame 115, and the other end is coaxially rotatably connected to the first support rod 113 and the second support rod 114. The second support rod 114 is located between the reinforcing arms 12 and the first support rod 113, and is rotatably connected to both the first support rod 113 and the reinforcing arms 12. During folding, the first support rod 113 and the reinforcing arms 12 rotate synchronously, while the rotation of the second support rod 114 is opposite to that of the first support rod 113 and the reinforcing arms 12.

[0032] Furthermore, a fixing strip 13 is fixed at the pivot point of the reinforcing arm 12, the first support rod 113, and the second support rod 114. The fixing strip 13 fixes the first support rod 113 and the reinforcing arm 12, so that the first support rod 113 and the reinforcing arm 12 rotate synchronously, thereby improving the folding strength and stability of the chassis assembly 11 when folded. A fixing block 14 is also provided between the first support rod 113 and the reinforcing arm 12, which fixes the first support rod 113 and the reinforcing arm 12 to increase the connection strength between them.

[0033] A pair of parallel connecting arms 15 are fixed to the side of the second support frame 116 facing the first support frame 115. The connecting arms 15 are parallel to the reinforcing arms 12. One end of the connecting arm 15 is fixed to the second support frame 116, and the other end of the connecting arm 15 is rotatably connected to one end of the folding arm 32. In one specific embodiment, the support frame 112 includes several fixedly connected horizontal and vertical bars. The two ends of the vertical bars are fixedly connected to a pair of parallel support rods 111. One end of the reinforcing arm 12 is fixedly connected to the vertical bar of the first support frame 115, and one end of the connecting arm 15 is fixed to the vertical bar of the second support frame 116.

[0034] Reference Figure 4The reinforcing rod 31 connected to the first support rod 113 and the same side frame 21 is designated as the first reinforcing rod 311. The reinforcing rod 31 connected to the second support rod 114 and the same side frame 21 is designated as the second reinforcing rod 312. One end of the first reinforcing rod 311 and the second reinforcing rod 312 are rotatably connected to the two side frames 21, respectively, and the other ends of the first reinforcing rod 311 and the second reinforcing rod 312 are rotatably connected to each other. The first folding arm 321 is rotatably connected to the first reinforcing rod 311, and the second folding arm 322 is rotatably connected to the second reinforcing rod 312. The first folding arm 321 and the second folding arm 322 intersect each other. One end of the first folding arm 321 is rotatably connected to the first reinforcing rod 311, and the other end of the first folding arm 321 is rotatably connected to one end of the connecting arm 15. One end of the second folding arm 322 is rotatably connected to the second reinforcing rod 312, and the other end of the second folding arm 322 is rotatably connected to one end of the reinforcing arm 12.

[0035] Reference Figure 1 and Figure 5 The side frame 21 includes several horizontal and vertical columns that are fixedly connected. One end of the support rod 111 is fixed to the vertical column of the side frame 21. Each side frame 21 has a horizontal column located below the chassis assembly 11. The horizontal column located below the chassis assembly 11 is the first horizontal column 211. The first horizontal column 211 extends vertically toward the ground to a connecting vertical column 212. One end of the connecting vertical column 212 is fixed to the first horizontal column 211. One end of the reinforcing rod 31 is rotatably connected to the connecting vertical column 212.

[0036] Reference Figure 5 and Figure 6 The reinforcing rod 31 has a bend 313 at one end near the connecting vertical column 212. When folded, the bend 313 of the reinforcing rod 31 provides a space for the first horizontal column 211 to accommodate it. The bend 313 of the reinforcing rod 31 reduces the restriction of the first horizontal column 211 on the folding of the reinforcing rod 31, making it easier to fold and store the reinforcing rod 31.

[0037] Reference Figure 2 The first support frame 115, the second support frame 116, the two first support rods 113 and the two second support rods 114 form a hollow area 16, and a foot pedal can be installed below the hollow area 16 to increase the comfort of riding.

[0038] The implementation principle of a foldable handcart according to an embodiment of this application is as follows: one end of the first reinforcing rod 311 and the second reinforcing rod 312 are respectively rotatably connected to the two side frames 21, and the other ends of the first reinforcing rod 311 and the second reinforcing rod 312 are rotatably connected to each other. The first folding arm 321 and the second folding arm 322 cross each other. One end of the first folding arm 321 is rotatably connected to the first reinforcing rod 311, and the other end of the first folding arm 321 is rotatably connected to the connecting arm 15. One end of the second folding arm 322 is rotatably connected to the second reinforcing rod 312, and the other end of the second folding arm 322 is rotatably connected to the reinforcing arm 12. The first reinforcing rod 311, the second reinforcing rod 312, the first folding arm 321 and the second folding arm 322 provide further support for the chassis assembly 11, and can be folded and stored synchronously with the chassis assembly 11, thus increasing the load-bearing capacity and folding strength of the chassis assembly 11.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foldable trolley comprising two chassis assemblies (11) and two side frames (21), one end of the two chassis assemblies (11) being pivotally connected, the other end of the two chassis assemblies (11) being respectively pivotally connected with the two side frames (21), characterized in that, Also include: The chassis assembly (11) is connected with two groups of reinforcing assemblies (3), each of the reinforcing assemblies (3) comprises two reinforcing rods (31) and two folding arms (32), the reinforcing rods (31) are located below the chassis assembly (11), one end of the two reinforcing rods (31) is rotatably connected with the two side frames (21) respectively, the other end of the two reinforcing rods (31) is rotatably connected with each other, the two folding arms (32) are crossed with each other, one end of the two folding arms (32) is rotatably connected with the two reinforcing rods (31) respectively, the other end of the two folding arms (32) is rotatably connected with the two chassis assemblies (11) respectively.

2. The foldable stroller of claim 1, wherein: Each of the chassis assemblies (11) comprises a pair of parallel support rods (111) and a support frame (112) fixedly connected between the two support rods (111), the pair of support rods (111) of the chassis assembly (11) near the handle side is a first support rod (113), the pair of support rods (111) of the chassis assembly (11) away from the handle side is a second support rod (114), one end of the first support rod (113) and one end of the second support rod (114) are rotatably connected, the other end of the first support rod (113) and the other end of the second support rod (114) are rotatably connected with the two side frames (21) respectively, the support frame (112) fixed between the two first support rods (113) is a first support frame (115), the support frame (112) fixed between the two second support rods (114) is a second support frame (116), one side of the first support frame (115) facing the connection place of the two chassis assemblies (11) is fixedly connected with a pair of parallel reinforcing arms (12), the reinforcing arms (12) are parallel to the first support rod (113), one end of the reinforcing arms (12) is fixed on the first support frame (115), the other end of the reinforcing arms (12) is coaxially rotatably connected with the second support rod (114).

3. The collapsible pushcar of claim 2, wherein: One side of the second support frame (116) facing the connection place of the two chassis assemblies (11) is fixedly connected with a pair of parallel connecting arms (15), the connecting arms (15) are parallel to the reinforcing arms (12), one end of the two folding arms (32) of each of the reinforcing assemblies (3) is rotatably connected on one of the reinforcing arms (12) and one of the connecting arms (15) respectively.

4. The collapsible pushcar of claim 2, wherein: The side frame (21) comprises a plurality of horizontal columns and vertical columns fixedly connected, one end of the support rod (111) is fixed on the vertical column of the side frame (21), there is a horizontal column below the chassis assembly (11) for each of the side frames (21), the horizontal column below the chassis assembly (11) extends a connecting vertical column (212) towards the ground, one end of the connecting vertical column (212) is fixed on the horizontal column below the chassis assembly (11), one end of the reinforcing rod (31) is rotatably connected on the connecting vertical column (212).

5. The collapsible push trolley of claim 4, wherein: The reinforcing rod (31) has a bending part (313) near one end of the connecting vertical column (212), and the bending part (313) of the reinforcing rod (31) provides a containing space for the horizontal column below the chassis assembly (11) when folded.

6. The collapsible pushcar of claim 2, wherein: A fixed strip (13) is arranged at the rotating shaft of the first supporting rod (113) and the second supporting rod (114), and the fixed strip (13) is fixedly connected with the first supporting rod (113) and the reinforcing arm (12).

7. The collapsible pushcar of claim 6, wherein: A fixed block (14) is fixedly connected between the first supporting rod (113) and the reinforcing arm (12).

8. The collapsible pushcar of claim 6, wherein: The two supporting frames (112), the two first supporting rods (113) and the two second supporting rods (114) enclose a hollow area (16).

9. The collapsible pushcar of claim 3, wherein: The supporting frame (112) comprises a plurality of fixedly connected horizontal rods and vertical rods, two ends of the vertical rod of the supporting frame (112) are fixedly connected on a pair of supporting rods (111), and one end of the reinforcing arm (12) and the connecting arm (15) is fixedly connected on the vertical rod of the supporting frame (112).

Images