Folding push trolley

Abstract

The application relates to the field of folding trolleys, in particular to a folding trolley which comprises a first folding plate, a second folding plate, a clamping block and a connecting column, the first folding plate is hinged to the second folding plate, the upper end of the first folding plate is provided with a first limiting groove, the upper end of the second folding plate is provided with a second limiting groove, the groove bottom of the first limiting groove is fixedly connected with a first limiting block, the groove bottom of the second limiting groove is fixedly connected with a second limiting block, one side of the clamping block is provided with a clamping groove, the clamping groove is used for embedding the first limiting block and the second limiting block, the groove bottom of the second limiting groove is provided with a control port, the connecting column is slidingly connected to the inner wall of the control port, and the connecting column is fixedly connected to the groove bottom of the clamping groove. When the trolley is unfolded, the first folding plate and the second folding plate can be simultaneously locked by only sliding the clamping block; when the trolley is stored, the first folding plate and the second folding plate can be simultaneously unlocked by only sliding the clamping block, the locking step is effectively simplified, and the operation convenience and efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of folding pushcarts, and more particularly to a folding pushcart. Background Technology

[0002] Folding trolleys, as small carrying tools that integrate transportation and convenient storage, are widely used in various scenarios such as daily shopping, logistics transportation, and short-distance travel. Their core design concept lies in the efficient conversion between a stable structure under load and a compact folding mechanism when not in use, achieved through ingenious joints and linkages. This feature greatly alleviates the conflict between storage space and sudden carrying needs for urban residents, making it an indispensable piece of convenient equipment in modern life.

[0003] The locking mechanism for folding and unfolding folding carts on the market is crucial, directly impacting safety and convenience. Common locking structures typically involve a mechanical device consisting of a movable locking block and a fixed slot. When the user unfolds the cart to its working position, the folding plate and main frame move to a specific angle. At this point, the user needs to manually move or push an independent locking block to engage with a pre-set slot or hole on the folding plate. This physical interlocking mechanism aims to prevent the cart from accidentally folding under load or during movement, constituting the mainstream solution for ensuring the rigidity of the cart structure in current technology.

[0004] However, the aforementioned locking method, which relies on manual operation of the locking blocks, has obvious drawbacks in practical applications. Every time the vehicle is opened, the user must perform a series of precise manual operations: "finding the locking block, aligning it with the slot, and applying force to insert it." This process is cumbersome and extremely inconvenient, especially when holding objects with both hands or when the vehicle is in urgent need of use. Utility Model Content

[0005] To improve user convenience, this application provides a folding pushcart.

[0006] This application provides a technical solution for a folding push-pull cart as follows: A folding push-pull cart includes a first folding plate, a second folding plate, a locking block, and a connecting post. The first folding plate is hinged to the second folding plate. The upper end of the first folding plate is provided with a first limiting groove, and the upper end of the second folding plate is provided with a second limiting groove. A first limiting block is fixedly connected to the bottom of the first limiting groove, and a second limiting block is fixedly connected to the bottom of the second limiting groove. A locking slot is provided on one side of the locking block for the first and second limiting blocks to be inserted. A control port is provided at the bottom of the second limiting groove. The connecting post is slidably connected to the inner wall of the control port and fixedly connected to the bottom of the locking slot.

[0007] By adopting the above technical solution, when unfolding the trolley, the first folding plate and the second folding plate can be locked simultaneously by simply sliding the locking block. When storing the trolley, the first folding plate and the second folding plate can be unlocked simultaneously by simply sliding the locking block. This effectively simplifies the locking steps and improves the convenience and efficiency of operation.

[0008] Preferably, it further includes a back plate and a bottom plate. The end of the first folding plate away from the second folding plate is hinged to the back plate, and the bottom plate is hinged to the lower end of the back plate. The hinge axis between the bottom plate and the back plate is perpendicular to the hinge axis between the back plate and the first folding plate. A first support block is fixedly connected to the lower end of the first folding plate, and a second support block is fixedly connected to the lower end of the second folding plate. The upper ends of the first support block and the second support block are used to abut against the bottom plate.

[0009] By adopting the above technical solution, the first support block and the second support block form a stable support for the bottom plate when the vehicle body is unfolded, together forming a solid three-dimensional load-bearing frame. This effectively transfers the weight of the goods borne by the bottom plate to the folding plate and the entire vehicle body through the support blocks, thereby significantly enhancing the structural rigidity and load-bearing capacity of the folding push-pull cart in the unfolded state, while ensuring the smooth realization of the folding function.

[0010] Preferably, it further includes a sliding block, a pressure plate, and a hook. The second folding plate has a sliding groove on the side facing the bottom plate. The sliding groove is connected to the control port. The sliding block slides in the sliding groove. The pressure plate is fixedly connected to the end of the sliding block away from the bottom of the sliding groove. The pressure plate extends out of the sliding groove. The upper end of the pressure plate is used for the bottom plate to abut against. One end of the hook is detachably connected to the connecting column, and the other end of the hook is detachably connected to the sliding block.

[0011] By adopting the above technical solution, the hook connects the connecting column and the sliding block. When the base plate is lowered, the base plate drives the pressure plate to slide downward, which causes the connecting column to drive the locking block to slide downward synchronously. This achieves quick locking of the folding mechanism without the need for additional manual operation of the locking block, thus improving the convenience of use.

[0012] Preferably, the lower end of the connecting column is provided with a connecting port, the upper end of the sliding block is provided with a hanging port, and the two ends of the hook pass through the hanging port and the connecting port respectively.

[0013] By adopting the above technical solutions, disassembly and replacement are facilitated, improving user convenience.

[0014] Preferably, it also includes a spring, which is sleeved on the outer periphery of the connecting post, with one end of the spring abutting the bottom of the slot and the other end of the spring abutting the bottom of the second limiting slot.

[0015] By adopting the above technical solution, when the folding trolley is stored, the bottom plate rotates upward, the pressure plate is not subjected to external force, the spring recovers its deformation and pushes the locking block upward to achieve automatic unlocking, thus improving the convenience of user use.

[0016] Preferably, it also includes a limiting ring, which is disposed in the sliding groove and is detachably connected to the outer wall of the connecting column. The upper end of the limiting ring is used to abut against the downward-facing groove wall of the sliding groove.

[0017] By adopting the above technical solution, the sliding of the connecting column is limited, the maximum height of the pressure plate is limited, and the base plate can abut against the pressure plate when it rotates.

[0018] Preferably, it also includes a positioning plate, which is fixedly connected to the wall of the sliding groove. The positioning plate has a positioning opening, the connecting column passes through the positioning opening, and the limiting ring is located above the positioning plate. The lower end of the limiting ring is used to abut against the positioning plate.

[0019] By adopting the above technical solution, the sliding of the connecting column is limited, the downward impact force on the pressure plate is dispersed, and the service life of the entire structure is extended.

[0020] Preferably, the outer wall of the connecting column is coaxially provided with an annular groove, and one end of the limiting ring is provided with a notch. The width of the notch is smaller than the diameter of the connecting column, and the notch is used to allow the connecting column to pass through. The limiting ring is embedded in the annular groove.

[0021] By adopting the above technical solution, during installation, the notch can be used to allow the limiting ring to undergo elastic deformation and slide into and be tightly embedded in the ring groove, achieving quick and secure assembly. At the same time, it avoids the use of additional fasteners and simplifies the structure and assembly process.

[0022] Preferably, the height of the first limiting block is less than the height of the second limiting block, and the moving path of the connecting column is greater than the height of the first limiting block but less than the height of the second limiting block.

[0023] By adopting the above technical solution, when the connecting column is lifted upwards to unlock, the locking block will first disengage from the lower first limiting block and release the lock on the first folding plate. At this time, the locking block will still be in contact with the higher second limiting block, making it easier to lock the first limiting block next time, making the folding operation smoother and more controllable, and improving the convenience of use.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When unfolding the trolley, simply sliding the latch will lock both the first and second folding panels simultaneously. When folding the trolley, simply sliding the latch will unlock both the first and second folding panels simultaneously. This effectively simplifies the locking process and improves the ease and efficiency of operation. 2. When the folding trolley is stored, the base plate rotates upwards, the pressure plate is not subjected to external force, the spring returns to its original deformation and pushes the locking block upwards, realizing automatic unlocking and improving the convenience of use for users; 3. When the connecting column is lifted upwards to unlock, the locking block will first disengage from the lower first limit block, releasing the lock on the first folding plate. At this time, the locking block will still be in contact with the higher second limit block, making it easier to lock the first limit block next time, making the folding operation smoother and more controllable, and improving the convenience of use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a folding pushcart.

[0026] Figure 2 It is a schematic diagram of the overall structure of the back panel, front panel, side panels, bottom panel, and locking components.

[0027] Figure 3 This is a schematic diagram of the overall structure of the side panel and locking components.

[0028] Figure 4 It is a schematic diagram of the overall structure of the side plate, connecting column, sliding block, pressure plate, hook, spring, limit ring and positioning plate.

[0029] Figure 5 It is a schematic diagram of the overall structure of the connecting column, sliding block, pressure plate, hook, spring and limit ring.

[0030] Explanation of reference numerals in the attached drawings: 1. Back plate; 2. Front panel; 3. Side plate; 31. First folding plate; 311. First support block; 312. First limiting groove; 313. First limiting block; 32. Second folding plate; 321. Second support block; 322. Second limiting groove; 323. Second limiting block; 324. Control port; 325. Sliding groove; 4. Base plate; 5. Cover plate; 6. Locking element; 61. Locking block; 611. Locking groove; 62. Connecting post; 621. Connecting port; 622. Ring groove; 63. Sliding block; 631. Hanging port; 64. Pressure plate; 65. Hook; 66. Spring; 67. Limiting ring; 671. Notch; 68. Positioning plate; 681. Positioning port. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a folding push-pull cart. (Refer to...) Figure 1 and Figure 2 The folding trolley includes a back panel 1, a front panel 2, side panels 3, a bottom panel 4, a cover 5, and a locking mechanism 6.

[0033] Reference Figure 2The back panel 1 and the front panel 2 are parallel to each other. There are two side panels 3, which are close to the two ends of the back panel 1 respectively. The side panel 3 includes a first folding plate 31 and a second folding plate 32. One end of the first folding plate 31 is hinged to one end of the back panel 1, and the other end of the first folding plate 31 is hinged to one end of the second folding plate 32. The other end of the second folding plate 32 is hinged to one end of the front panel 2.

[0034] Reference Figure 2 and Figure 3 The lower end of the first folding plate 31 is fixedly connected to a first support block 311, the lower end of the second folding plate 32 is fixedly connected to a second support block 321, one end of the bottom plate 4 is hinged to the lower end of the back plate 1, the hinge axis of the bottom plate 4 and the back plate 1 is perpendicular to the hinge axis of the back plate 1 and the first folding plate 31, and the upper ends of the first support block 311 and the second support block 321 are used to abut against the bottom plate 4.

[0035] Reference Figure 1 and Figure 2 One end of the cover plate 5 is hinged to the upper end of the panel 2, and the other end of the cover plate 5 abuts against the upper end of the back plate 1. When the folding trolley is opened, the back plate 1, panel 2, side plate 3, bottom plate 4 and cover plate 5 together form a rectangular cavity.

[0036] Reference Figure 3 and Figure 4 The locking component 6 includes a locking block 61, a connecting post 62, a sliding block 63, a pressure plate 64, a hook 65, a spring 66, a limiting ring 67, and a positioning plate 68.

[0037] The upper end of the first folding plate 31 is provided with a first limiting groove 312, and the upper end of the second folding plate 32 is provided with a second limiting groove 322. The first limiting groove 312 is connected to the second limiting groove 322. The bottom of the first limiting groove 312 is fixedly connected with a first limiting block 313, and the bottom of the second limiting groove 322 is fixedly connected with a second limiting block 323. One side of the locking block 61 is provided with a locking groove 611, which is used for the first limiting block 313 and the second limiting block 323 to be embedded. The locking block 61 is slidably connected to the groove wall of the first limiting groove 312 and the groove wall of the second limiting groove 322.

[0038] Reference Figure 3 and Figure 4The bottom of the second limiting groove 322 is provided with a control port 324, which is located between the first limiting block 313 and the second limiting block 323. The connecting column 62 is slidably connected to the inner wall of the control port 324, and the upper end of the connecting column 62 is fixedly connected to the bottom of the slot 611. The second folding plate 32 is provided with a sliding groove 325 on the side facing the bottom plate 4. The sliding groove 325 is located below the control port 324 and communicates with the control port 324. The sliding block 63 slides in the sliding groove 325. The pressure plate 64 is fixedly connected to the end of the sliding block 63 away from the bottom of the sliding groove 325. The pressure plate 64 extends out of the sliding groove 325, and the upper end of the pressure plate 64 is used for the bottom plate 4 to abut against.

[0039] Reference Figure 5 The lower end of the connecting column 62 is provided with a connecting port 621, the upper end of the sliding block 63 is provided with a hanging port 631, and the two ends of the hook 65 pass through the hanging port 631 and the connecting port 621 respectively.

[0040] Reference Figure 3 and Figure 4 Spring 66 is sleeved on the outer periphery of connecting post 62. One end of spring 66 abuts against the bottom of slot 611, and the other end of spring 66 abuts against the bottom of second limiting slot 322. The height of first limiting block 313 is less than the height of second limiting block 323, and the moving path of connecting post 62 is greater than the height of first limiting block 313 but less than the height of second limiting block 323.

[0041] Reference Figure 4 and Figure 5 The outer wall of the connecting post 62 is coaxially provided with an annular groove 622. One end of the limiting ring 67 is provided with a notch 671. The width of the notch 671 is smaller than the diameter of the connecting post 62. The notch 671 is used for the connecting post 62 to pass through. The limiting ring 67 is embedded in the annular groove 622 and is located in the sliding groove 325. The positioning plate 68 is fixedly connected to the groove wall of the sliding groove 325. The positioning plate 68 is provided with a positioning opening 681. The connecting post 62 passes through the positioning opening 681. The limiting ring 67 is located above the positioning plate 68. The lower end of the limiting ring 67 is used to abut against the positioning plate 68, and the upper end of the limiting ring 67 is used to abut against the downward-facing groove wall of the sliding groove 325.

[0042] The implementation principle of a folding push-pull cart according to an embodiment of this application is as follows: When the push-pull cart needs to be opened, the bottom plate 4 flips downward, and the bottom plate 4 abuts against the pressure plate 64, causing the sliding block 63 to slide downward. At the same time as the sliding block 63 slides, the connecting column 62 is driven to slide through the hook 65, the spring 66 is compressed, the locking block 61 slides, and the first limiting block 313 and the second limiting block 323 are both embedded in the slot 611 to achieve locking. When the push-pull cart needs to be stored, the bottom plate 4 flips upward, the pressure plate 64 is not subject to external force, the spring 66 restores its deformation and pushes the locking block 61 to slide upward, and the first limiting block 313 is disengaged from the slot 611 to achieve unlocking.

[0043] 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 folding pushcart, characterized in that: The device includes a first folding plate (31), a second folding plate (32), a locking block (61), and a connecting post (62). The first folding plate (31) is hinged to the second folding plate (32). The upper end of the first folding plate (31) is provided with a first limiting groove (312), and the upper end of the second folding plate (32) is provided with a second limiting groove (322). The bottom of the first limiting groove (312) is fixedly connected to a first limiting block (313), and the bottom of the second limiting groove (322) is fixedly connected to a second limiting block (323). One side of the locking block (61) is provided with a locking groove (611), which is used for the first limiting block (313) and the second limiting block (323) to be embedded. The bottom of the second limiting groove (322) is provided with a control port (324). The connecting post (62) is slidably connected to the inner wall of the control port (324), and the connecting post (62) is fixedly connected to the bottom of the locking groove (611).

2. The folding pushcart according to claim 1, characterized in that: It also includes a back plate (1) and a bottom plate (4). The end of the first folding plate (31) away from the second folding plate (32) is hinged to the back plate (1). The bottom plate (4) is hinged to the lower end of the back plate (1). The hinge axis of the bottom plate (4) and the back plate (1) is perpendicular to the hinge axis of the back plate (1) and the first folding plate (31). The lower end of the first folding plate (31) is fixedly connected to a first support block (311). The lower end of the second folding plate (32) is fixedly connected to a second support block (321). The upper ends of the first support block (311) and the second support block (321) are used to abut against the bottom plate (4).

3. The folding pushcart according to claim 2, characterized in that: It also includes a sliding block (63), a pressure plate (64), and a hook (65). The second folding plate (32) has a sliding groove (325) on the side facing the bottom plate (4). The sliding groove (325) is connected to the control port (324). The sliding block (63) slides in the sliding groove (325). The pressure plate (64) is fixedly connected to the end of the sliding block (63) away from the bottom of the sliding groove (325). The pressure plate (64) extends out of the sliding groove (325). The upper end of the pressure plate (64) is used for the bottom plate (4) to abut against. One end of the hook (65) is detachably connected to the connecting post (62), and the other end of the hook (65) is detachably connected to the sliding block (63).

4. The folding pushcart according to claim 3, characterized in that: The lower end of the connecting column (62) is provided with a connecting port (621), the upper end of the sliding block (63) is provided with a hanging port (631), and the two ends of the hook (65) pass through the hanging port (631) and the connecting port (621) respectively.

5. The folding pushcart according to claim 3, characterized in that: It also includes a spring (66), which is sleeved on the outer periphery of the connecting post (62). One end of the spring (66) abuts against the bottom of the slot (611), and the other end of the spring (66) abuts against the bottom of the second limiting slot (322).

6. The folding pushcart according to claim 5, characterized in that: It also includes a limiting ring (67), which is located in the sliding groove (325). The limiting ring (67) is detachably connected to the outer wall of the connecting column (62). The upper end of the limiting ring (67) is used to abut against the downward-facing groove wall of the sliding groove (325).

7. The folding pushcart according to claim 6, characterized in that: It also includes a positioning plate (68), which is fixedly connected to the groove wall of the sliding groove (325). The positioning plate (68) is provided with a positioning port (681), the connecting column (62) passes through the positioning port (681), and the limiting ring (67) is located above the positioning plate (68). The lower end of the limiting ring (67) is used to abut against the positioning plate (68).

8. The folding pushcart according to claim 6, characterized in that: The outer wall of the connecting column (62) is coaxially provided with an annular groove (622), and one end of the limiting ring (67) is provided with a notch (671). The width of the notch (671) is smaller than the diameter of the connecting column (62). The notch (671) is used to allow the connecting column (62) to pass through, and the limiting ring (67) is embedded in the annular groove (622).

9. The folding pushcart according to claim 1, characterized in that: The height of the first limiting block (313) is less than the height of the second limiting block (323), and the moving path of the connecting column (62) is greater than the height of the first limiting block (313) and less than the height of the second limiting block (323).

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