Folding cart

Abstract

The utility model discloses a folding cart, which relates to the technical field of folding carts, has a folding state and an unfolding state, and comprises a front frame, a rear frame and a reinforcing folding component, in the unfolding state, the front frame and the rear frame are far away from each other to be unfolded, and in the folding state, the front frame and the rear frame are close to each other to be folded. The front frame comprises a front bottom rod capable of being turned over up and down, the rear frame comprises a rear bottom rod capable of being rotationally unfolded or folded relative to the front bottom rod, the reinforcing and folding assembly is used for connecting the front bottom rod and the rear bottom rod, and the bearing capacity of the single-bottom-rod frame can be enhanced through the reinforcing and folding assembly after the frame is unfolded. The situation that the frame deforms due to the fact that the strength of the frame is not high is avoided, the reinforcing folding assembly can be folded along with the frame when the frame is folded, and storage is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of folding carts, in particular to a folding cart. Background Art

[0002] A cart is a tool used to carry items. It usually consists of one or more wheels, a frame and a handle. However, the overall area of ​​the cart is large, which makes it inconvenient to transport. For this reason, people have introduced folding carts. Folding carts can be folded to reduce the overall area of ​​the cart. However, because the structure of the cart becomes foldable, the structural strength of the cart after unfolding is not as good as that of a non-foldable cart, resulting in greater limitations for folding carts. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can improve the structural strength of the foldable stroller after it is unfolded.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A folding cart has a folded state and an unfolded state, and includes a front frame, a rear frame, and a reinforced folding assembly. In the unfolded state, the front frame and the rear frame move away from each other to unfold, and in the folded state, the front frame and the rear frame move toward each other to fold. The front frame includes a front bottom bar that can be flipped up and down, and the rear frame includes a rear bottom bar that can be rotated relative to the front bottom bar to unfold or fold. The reinforced folding assembly is used to connect the front bottom bar and the rear bottom bar.

[0006] As a further solution of the present invention: the reinforced folding assembly includes a first reinforcing rod hinged on the front frame and a second reinforcing rod hinged on the rear frame, one end of the first reinforcing rod is hinged to one end of the second reinforcing rod, the first reinforcing rod is hinged with a first connecting rod hinged to the front bottom rod frame, and the second reinforcing rod is hinged with a second connecting rod hinged to the rear bottom rod.

[0007] As a further solution of the present invention: the front frame is provided with a first support frame, the first support frame includes a first direct connection portion connected to the front frame and a first hinged portion hinged to the first reinforcement rod, the first direct connection portion and the first hinged portion are bent relative to each other, and the rear frame is provided with a second support frame, the second support frame includes a second direct connection portion connected to the rear frame and a second hinged portion hinged to the second reinforcement rod, the second direct connection portion and the second hinged portion are bent relative to each other.

[0008] As a further solution of the present invention: one end of the rear bottom bar is connected to a locking piece, and one end of the front bottom bar is hinged to the locking piece.

[0009] As a further solution of the present invention: one end of the locking member is provided with an overlapping portion for overlapping the front bottom bar in the unfolded state.

[0010] As a further solution of the present invention: the front frame includes a first main frame and a first top rod hinged to the upper part of the first main frame, the front bottom rod is hinged to the lower part of the first main frame, the rear frame includes a second main frame and a second top rod hinged to the upper part of the second main frame, the rear bottom rod is hinged to the lower part of the second main frame, a connecting piece is provided between the first top rod and the second top rod, and one end of the first top rod and one end of the second top rod are both hinged to the connecting piece.

[0011] As a further solution of the present invention: the front frame and the rear frame are provided with a linkage support frame for ensuring that the front frame and the rear frame are stable when they are unfolded.

[0012] As a further solution of the present invention: the linkage support frame includes a first connecting rod hinged on the front bottom rod, one end of the first connecting rod is hinged to a first rocker, one end of the first rocker is hinged to the second top rod, a second connecting rod is hinged on the rear bottom rod, one end of the second connecting rod is hinged to a second rocker, one end of the second rocker is hinged to the first top rod, and the intersection of the first connecting rod and the second connecting rod is hinged together by rivets.

[0013] As a further solution of the present invention: both the first main frame and the second main frame are provided with detachable support rods, and a roof is provided on the support rods.

[0014] As a further solution of the present invention: the first main frame and the second main frame are both provided with detachable rollers, and the second main frame is hinged with a push rod.

[0015] Compared with the existing technology, the beneficial effects of this technical solution are: by reinforcing the folding assembly, the load-bearing capacity of the single-bottom-bar frame can be enhanced after the frame is unfolded, avoiding deformation of the frame due to the low strength of the frame, and the reinforced folding assembly can also be folded along with the frame when the frame is folded, which is convenient for storage.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic diagram of the unfolding effect of the overall frame of the utility model;

[0019] Figure 2 This is a schematic diagram of the folding effect of the entire frame of the utility model;

[0020] The corresponding reference numerals in the accompanying drawings are described as follows:

[0021] 1. Front frame; 11. Front bottom bar; 12. First support frame; 13. First main frame; 131. First top bar; 14. Support bar; 15. Roof; 16. Roller; 2. Rear frame; 21. Rear bottom bar; 211. Locking piece; 212. Overlapping part; 22. Second support frame; 23. Second main frame; 231. Second top bar; 24. Push rod; 3. Connecting piece; 4. Reinforced folding assembly; 41. First reinforcing rod; 411. First connecting rod; 42. Second reinforcing rod; 421. Second connecting rod; 5. Linkage support frame; 51. First connecting rod; 52. First rocker; 53. Second connecting rod; 54. Second rocker;. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-2 A folding stroller has a folded state and an unfolded state. The folding stroller includes a front frame 1, a rear frame 2 and a reinforcement folding assembly 4. In the unfolded state, the front frame 1 and the rear frame 2 move away from each other to unfold. In the folded state, the front frame 1 and the rear frame 2 move toward each other to fold. The front frame 1 includes a front bottom bar 11, and the rear frame 2 includes a rear bottom bar 21 that can be rotated relative to the front bottom bar 11 to unfold or fold. The reinforcement folding assembly 4 is used to connect the front bottom bar 11 and the rear bottom bar 21. The reinforcement folding assembly can support and reinforce the front bottom bar 11 and the rear bottom bar 21 after the frame is unfolded to avoid deformation of the frame due to the low strength of the frame. The reinforcement folding assembly can also fold along with the frame when the frame is folded.

[0024] In some embodiments: the reinforcement folding assembly 4 includes a first reinforcement rod 41 hinged on the front frame 1 and a second reinforcement rod 42 hinged on the rear frame 2, one end of the first reinforcement rod 41 is hinged to one end of the second reinforcement rod 42, the first reinforcement rod 41 is hinged with a first connecting rod 411 hinged to the front bottom rod 11, and the second reinforcement rod 42 is hinged with a second connecting rod 421 hinged to the rear bottom rod 21, the front frame 1 is provided with a first support frame 12, the first support frame 12 includes a first direct connection portion connected to the front frame 1 and a first hinge portion hinged to the first reinforcement rod 41, the first direct connection portion and the first hinge portion are bent relative to each other, the rear frame 2 is provided with a second support frame 22, the second support frame 22 includes a second direct connection portion connected to the rear frame 2 and a second hinge portion hinged to the second reinforcement rod 42, the second direct connection portion and the second hinge portion are bent relative to each other, one end of the rear bottom rod 21 is connected with a locking member 211, the front bottom One end of the rod 11 is located inside the locking piece 211 and is hinged. One end of the locking piece 211 is provided with a lap portion 212 for lap-jointing the front bottom bar 11 in the unfolded state. The front frame 1 includes a first main frame 13 and a first top bar 131 hinged on the first main frame 13. The rear frame 2 includes a second main frame 23 and a second top bar 231 hinged on the second main frame 23. A connecting piece 3 is provided between the first top bar 131 and the second top bar 231. One end of the first top bar 131 and one end of the second top bar 231 are both hinged to the connecting piece 3. When the front frame 1 and the rear frame 2 are in the unfolded state, the first reinforcing rod 41 and the second reinforcing rod 42 are also in the unfolded state, so that the first connecting rod 411 and the second connecting rod 421 can respectively share the weight of the front bottom bar 11 and the rear bottom bar 21 to the first reinforcing rod 41 and the second reinforcing rod 42, thereby playing a reinforcing role.

[0025] Specifically, when the front frame 1 and the rear frame 2 are to be folded, the front frame 1 and the rear frame 2 are pushed toward each other. When the front frame 1 and the rear frame 2 move, they respectively bring the first top bar 131 and the second top bar 231 closer to each other, so that the front bottom bar 11 and the rear bottom bar 21 also begin to move closer to each other, and the space between the front frame 1 and the rear frame 2 begins to decrease, thereby achieving the purpose of folding the front frame 1 and the rear frame 2.

[0026] When the front frame 1 and the rear frame 2 are to be unfolded, the front frame 1 and the rear frame 2 are pulled away from each other, so that the first top rod 131 and the second top rod 231 start to move away from each other, thereby causing the first main frame 13 and the second main frame 23 to start to move away from each other, and the front bottom rod 11 and the rear bottom rod 21 also start to move away from each other, and one end of the front bottom rod 11 is rotated again into the interior of the locking member 211, so that the overlapping portion 212 overlaps the front bottom rod 11, thereby limiting the front bottom rod 11 from continuing to rotate downward, thereby limiting the front bottom rod 11 to the unfolded position, and then The rear bottom bar 21 is also kept in the deployed position, and the first reinforcement bar 41 and the second reinforcement bar 42 are also moved away from each other. When the connecting member 3 is fully moved to the first working position, the front frame 1 and the rear frame 2 are fully deployed, and the first reinforcement bar 41 and the second reinforcement bar 42 are also deployed in parallel, so that the first reinforcement bar 41 and the second reinforcement bar 42 can respectively support the front bottom bar 11 and the rear bottom bar 21 through the first connecting bar 411 and the second connecting bar 421, thereby reinforcing the deployment between the first main frame 13 and the second main frame 23.

[0027] In some embodiments, a linkage support frame 5 is provided on the front frame 1 and the rear frame 2 to ensure that the front frame 1 and the rear frame 2 are stable when unfolded. The linkage support frame 5 includes a first connecting rod 51 hinged on the front bottom bar 11, one end of the first connecting rod 51 is hinged to a first rocker 52, one end of the first rocker 52 is hinged to the second top bar 231, a second connecting rod 53 is hinged on the rear bottom bar 21, one end of the second connecting rod 53 is hinged to a second rocker 54, one end of the second rocker 54 is hinged to the first top bar 131 The intersection of the first connecting rod 51 and the second connecting rod 53 is hinged together by rivets: a first support frame 12 is provided on the first main frame 13, one end of the first support frame 12 is hinged to one end of the first reinforcement rod 41, a second support frame 22 is provided on the second main frame 23, one end of the second support frame 22 is hinged to the second reinforcement rod 42, and the linkage support frame 5 can be further reinforced when the front frame 1 and the rear frame 2 are unfolded, ensuring that the front frame 1 and the rear frame 2 can be reinforced when unfolded;

[0028] Specifically, when the front frame 1 and the rear frame 2 move away from each other, the first rocker arm 52 and the second rocker arm 54 respectively start to rotate around the hinges with the first connecting rod 51 and the second connecting rod 53. When the front frame 1 and the rear frame 2 are fully unfolded, the first rocker arm 52 and the second rocker arm 54 are aligned with the first connecting rod 51 and the second connecting rod 53, respectively, thereby reinforcing the unfolding of the first main frame 13 and the second main frame 23.

[0029] In some embodiments, the first main frame 13 and the second main frame 23 are both provided with a detachable support rod 14, the support rod 14 is provided with a roof 15, the first main frame 13 and the second main frame 23 are both provided with a detachable roller 16, and the second main frame 23 is hinged with a push rod 24. The roof 15 can prevent the sun from directly shining into the front frame 1 and the rear frame 2, and the cooperation between the roller 16 and the push rod 24 can facilitate the user to push the front frame 1 and the rear frame 2;

[0030] The specific process of folding and unfolding the folding stroller is as follows: when the front frame 1 and the rear frame 2 are to be folded, the front frame 1 and the rear frame 2 are pushed toward each other. When the front frame 1 and the rear frame 2 move, they will respectively drive the first top bar 131 and the second top bar 231 to move toward each other, so that the front bottom bar 11 and the rear bottom bar 21 also begin to move closer to each other, and the first reinforcement bar 41 and the second reinforcement bar 42 will also begin to rotate through the hinge. After the front frame 1 and the rear frame 2 complete the movement, an acute angle will be formed between the first reinforcement bar 41 and the second reinforcement bar 42. At the same time, when the front frame 1 and the rear frame 2 move, the first rocker bar 52 and the second rocker bar 54 will also be driven to rotate, so that the first rocker bar 52 and the second rocker bar 54 and the first connecting rod 51 and the second connecting rod 53 form acute angles, so that the volume between the front frame 1 and the rear frame 2 begins to shrink, thereby achieving the purpose of folding the front frame 1 and the rear frame 2.

[0031] When the front and rear frames 1 and 2 are to be unfolded, the front and rear frames 1 and 2 are pulled in the directions away from each other, so that the first top bar 131 and the second top bar 231 begin to move away from each other, thereby allowing the first main frame 13 and the second main frame 23 to start to move away from each other, and the front bottom bar 11 and the rear bottom bar 21 also begin to move away from each other, and one end of the front bottom bar 11 is rotated again into the interior of the locking piece 211, so that the overlapping portion 212 overlaps the front bottom bar 11, thereby limiting the front bottom bar 11 from continuing to rotate downward, thereby restricting the front bottom bar 11 to the unfolded position, and then allowing the rear bottom bar 21 to also remain in the unfolded position, and the first reinforcing bar 41 and the second reinforcing bar 42 will also move away from each other. When the connecting member 3 is fully moved to the first working position, the front and rear frames 1 and 2 are fully unfolded, and at the same time, the first reinforcing bar 41 and the second reinforcing bar 42 are also unfolded in parallel, so that The first reinforcing rod 41 and the second reinforcing rod 42 can respectively support the front bottom rod 11 and the rear bottom rod 21 through the first connecting rod 411 and the second connecting rod 421. The first connecting rod 411 and the second connecting rod 421 can respectively share the weight of the front bottom rod 11 and the rear bottom rod 21 to the first reinforcing rod 41 and the second reinforcing rod 42, thereby reinforcing the deployment between the first main frame 13 and the second main frame 23. When the first reinforcing rod 41 and the second reinforcing rod 42 are deployed, the first rocker arm 52 and the second rocker arm 54 also start to rotate around the hinge points with the first connecting rod 51 and the second connecting rod 53 as the axis. After the front frame 1 and the rear frame 2 are fully deployed, the first rocker arm 52 and the second rocker arm 54 will be aligned colinearly with the first connecting rod 51 and the second connecting rod 53, respectively, so as to reinforce the deployment of the first main frame 13 and the second main frame 23.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A folding cart, characterized in that: The folding cart has a folding state and an unfolding state. The folding cart comprises a front frame (1), a rear frame (2) and a reinforced folding assembly (4). In the unfolding state, the front frame (1) and the rear frame (2) move away from each other to unfold. In the folding state, the front frame (1) and the rear frame (2) move toward each other to fold. The front frame (1) comprises a front bottom bar (11) that can be turned up and down. The rear frame (2) comprises a rear bottom bar (21) that can be rotated relative to the front bottom bar (11) to unfold or fold. The reinforced folding assembly (4) is used to connect the front bottom bar (11) and the rear bottom bar (21).

2. The folding stroller according to claim 1, wherein: The reinforcement folding assembly (4) comprises a first reinforcement rod (41) hinged to the front frame (1) and a second reinforcement rod (42) hinged to the rear frame (2); one end of the first reinforcement rod (41) is hinged to one end of the second reinforcement rod (42); a first connecting rod (411) hinged to the front bottom rod (11) is hinged to the first reinforcement rod (41); and a second connecting rod (421) hinged to the rear bottom rod (21) is hinged to the second reinforcement rod (42).

3. The folding stroller according to claim 2, wherein: The front frame (1) is provided with a first support frame (12), the first support frame (12) includes a first direct connection portion connected to the front frame (1) and a first hinge portion hinged to the first reinforcement rod (41), the first direct connection portion and the first hinge portion are bent relative to each other, and the rear frame (2) is provided with a second support frame (22), the second support frame (22) includes a second direct connection portion connected to the rear frame (2) and a second hinge portion hinged to the second reinforcement rod (42), the second direct connection portion and the second hinge portion are bent relative to each other.

4. The folding stroller according to claim 3, wherein: One end of the rear bottom bar (21) is connected to a locking piece (211), and one end of the front bottom bar (11) is located inside the locking piece (211) and forms a hinge.

5. The folding stroller according to claim 4, characterized in that: One end of the locking piece (211) is provided with an overlapping portion (212) for overlapping the front bottom bar (11) in the unfolded state.

6. The folding stroller according to claim 1, wherein: The front frame (1) further comprises a first main frame (13) and a first top rod (131) hinged to the upper portion of the first main frame (13); the front bottom rod (11) is hinged to the lower portion of the first main frame (13); the rear frame (2) further comprises a second main frame (23) and a second top rod (231) hinged to the upper portion of the second main frame (23); the rear bottom rod (21) is hinged to the lower portion of the second main frame (23); a connecting member (3) is provided between the first top rod (131) and the second top rod (231); one end of the first top rod (131) and one end of the second top rod (231) are both hinged to the connecting member (3).

7. The folding stroller according to claim 6, wherein: The front frame (1) and the rear frame (2) are provided with a linkage support frame (5) for ensuring that the front frame (1) and the rear frame (2) are stable when unfolded.

8. The folding stroller according to claim 7, characterized in that: The linkage support frame (5) includes a first connecting rod (51) hinged on the front bottom rod (11), one end of the first connecting rod (51) is hinged to a first rocking rod (52), one end of the first rocking rod (52) is hinged to a second top rod (231), a second connecting rod (53) is hinged to the rear bottom rod (21), one end of the second connecting rod (53) is hinged to a second rocking rod (54), one end of the second rocking rod (54) is hinged to the first top rod (131), and the first connecting rod (51) and the second connecting rod (53) are hinged at an intersection.

9. The folding stroller according to claim 6, wherein: The first main frame (13) and the second main frame (23) are both provided with detachable support rods (14), and the support rods (14) are provided with a roof (15).

10. The folding stroller according to claim 6, wherein: Both the first main frame (13) and the second main frame (23) are provided with detachable rollers (16), and the second main frame (23) is hinged with a push rod (24).

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