Folding storage type side plate trolley

Abstract

The invention relates to the technical field of table trolleys, and discloses a foldable storage type side plate trolley which comprises a front base and a rear base, and a bottom plate is connected between the front base and the rear base in a foldable mode. A front side plate frame and front vertical frames located on the two sides of the front side plate frame are arranged at the upper end of the front base, and a rear side plate frame and rear vertical frames located on the two sides of the rear side plate frame are arranged at the upper end of the rear base. An upper slot and a lower slot which are distributed up and down are formed in the front vertical frame, an upper socket and a lower socket which are distributed up and down are arranged on the rear vertical frame, a top side plate is movably connected in the upper socket, and the top side plate penetrates through the upper slot and then is connected through a limiting plate; an abutting buckle assembly is further arranged at the front end of the middle of the rear base. Three-dimensional folding can be achieved, after overall folding, no outward protruding structure exists, the overall size is reduced, and occupied space in the idle state is greatly reduced. Through integrated driving of the abutting buckle assembly, the trolley can be fully folded rapidly, operation steps are simplified, and the folding efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of logistics trolley technology, specifically a folding and storage side panel trolley. Background Technology

[0002] Logistics trolleys, also known as cargo trolleys or cage trolleys, are unit mobile containers used for transporting and storing materials. They are commonly used for logistics distribution in large workshops or for logistics turnover between factory processes.

[0003] Logistics trolleys occupy a large space, making them inconvenient to store in a fixed location after storage and transfer. Because logistics trolleys typically include a bottom support plate and side frames above it, most cannot be fully folded, or the folding process is cumbersome and prone to loosening. To address this, we have introduced a new type of folding, storage-type side-panel trolley. Summary of the Invention

[0004] The purpose of this invention is to provide a folding and storage side panel trolley to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A folding and storage side panel trolley includes a front base and a rear base, and a base plate is foldably connected between the front base and the rear base. The upper end of the front base is provided with a front side plate frame and front uprights located on both sides of the front side plate frame; the upper end of the rear base is provided with a rear side plate frame and rear uprights located on both sides of the rear side plate frame. The front support frame is provided with upper and lower slots distributed vertically, and the rear support frame is provided with upper and lower sockets distributed vertically. A top side plate is movably connected inside the upper socket, and the top side plate passes through the upper slot and is connected by a limiting plate. The rear base is also provided with a retaining buckle assembly at the front end of the middle section. The front end of the retaining buckle assembly extends out of the rear base and is fixed with a pressure plate. When the pressure plate presses the retaining buckle assembly, the retaining buckle assembly will lift the base plate. After the rear side panel frame is folded close to the front side panel frame, the retaining buckle assembly will buckle with the front base. At the same time, the top side panel rotates downward until the top side panel is inserted into the lower socket.

[0006] Preferably, the front side panel frame and the front upright frame are provided with a front top frame, and the rear side panel frame and the rear upright frame are provided with a rear top frame.

[0007] Preferably, both the bottom sides of the front base and the rear base are provided with casters.

[0008] Preferably, the front side panel is also provided with a handle.

[0009] Preferably, the rear end of the top side plate is movably connected to the upper U-shaped slot in the upper socket by a first pin, and the bottom of the rear end of the top side plate is provided with a sloping surface. The upper socket and lower socket are respectively connected and matched with the upper slot and lower slot; The lower socket is provided with a lower U-shaped slot for snapping into the top side panel.

[0010] Preferably, the front end of the base plate is movably connected to the front base by a front pin, and the rear end of the base plate is slidably connected to the vertical groove on the rear stand by a rear pin.

[0011] Preferably, the lower socket has a rear connecting post on its outer side, the lower slot has a front connecting post on its outer side, and an elastic band connects the rear connecting post and the corresponding front connecting post.

[0012] Preferably, the rear base has a U-shaped seat at the front middle section, and two sets of vertical pins are symmetrically distributed inside the U-shaped seat; The abutting buckle assembly includes a sleeve fitted onto a vertical pin, a buckle connected to the front side of the sleeve by a rotating arm plate, a snap-fit ​​ball fixed in the middle of the inner side of the sleeve by a connecting arm, a push rod extending through and out of the rear base, an I-shaped plate fixed at the front end of the push rod, and a lifting column fixed in the middle of the upper end of the I-shaped plate. The pressure plate is fixed to the rear end of the push rod, and a return spring is also sleeved on the push rod. The return spring is located between the pressure plate and the rear base. The snap-fit ​​ball is snapped into the I-shaped disk; The bottom plate has an inner groove in the center of the rear part of the lower end, and the top of the lifting column extends into the inner groove. The top of the front end of the inner groove has an abutting slope. The front base has symmetrical through slots on both sides of the middle section. The buckle matches the corresponding through slot, and the inner side of the front end of the buckle is also provided with a contact slope.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the front base and the rear base of the present invention are connected by a foldable bottom plate, which can realize three-dimensional folding. After the whole folding, the trolley has no outward protruding structure, realizing "full wrap-up" complete folding. After folding, the overall volume is reduced, which greatly reduces the space occupied when idle.

[0014] This invention achieves rapid full folding of the trolley through integrated drive of the abutment buckle assembly, simplifying the operation steps and significantly improving folding efficiency. Furthermore, after folding, the automatic locking mechanism of the abutment buckle assembly ensures stable fixation of the folded state, preventing the trolley from becoming loose. Even when subjected to vibration during transport, it maintains stability, solving the problem of traditional trolleys being prone to "fragmentation" during folding. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of the invention after it has been fully unfolded. Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure from another perspective; Figure 3 This is a schematic diagram of the overall structure of the front upright, front top frame, front side plate frame and front base of the present invention; Figure 4 This is a schematic diagram of the overall structure of the rear support frame, rear top frame, rear side plate frame and rear base of the present invention; Figure 5 This is a schematic diagram of the connection between the I-shaped disk and the snap-fit ​​ball of the present invention; Figure 6 This is a schematic diagram of the connection between the buckle assembly and the rear base of the present invention; Figure 7 This is a schematic diagram of the structure of the base plate of the present invention; Figure 8 This is an exploded structural diagram of the assembly of the top side panel and the upper socket of the present invention; Figure 9 This is a schematic diagram of the structure when the rear end of the base plate of the present invention is raised; Figure 10 For the present invention Figure 9 A schematic diagram of the cross-sectional structure; Figure 11 This is a three-dimensional structural diagram of the folding process of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of the present invention after it has been fully folded. Figure 13 For the present invention Figure 12 A schematic diagram of the three-dimensional structure from another perspective.

[0016] In the diagram: 1. Front base; 2. Through slot; 3. Casters; 4. Handle; 5. Front side panel; 6. Front pin; 7. Base plate; 8. Rear pin; 9. Rear side panel; 10. Top side panel; 11. Elastic band; 12. Rear upright; 13. Vertical slide; 14. Limiting plate; 15. Front upright; 16. Rear top frame; 17. Front top frame; 18. Rear base; 19. Pressure plate; 20. Upper slot; 21. Lower slot; 22. Front connecting column; 23. Abutment buckle assembly; 231. Push rod; 232. I-shaped plate; 233. Lifting column; 234. Sleeve; 235. Connecting arm; 236. Rotating arm plate; 237. Contact slope; 238. Buckle; 239. Snap-fit ​​ball; 24. Rear connecting column; 25. Lower socket; 26. Lower U-shaped slot; 27. Upper socket; 28. Upper U-shaped slot; 29. ​​Return spring; 30. U-shaped seat; 31. Vertical pin; 32. Inner groove; 33. Abutting slope; 34. First pin; 35. Sloping surface. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Please see Figures 1-13 The present invention provides a technical solution: A folding and storage side panel trolley includes a front base 1 and a rear base 18.

[0019] The upper end of the front base 1 is provided with a front side panel 5 and front uprights 15 located on both sides of the front side panel 5. The upper end of the rear base 18 is provided with a rear side panel 9 and rear uprights 12 located on both sides of the rear side panel 9. A front top frame 17 is provided on the top of the front side panel 5 and the front uprights 15, and a rear top frame 16 is provided on the top of the rear side panel 9 and the rear uprights 12. Both the bottom sides of the front base 1 and the rear base 18 are provided with casters 3, and the front side panel 5 is also provided with a handle 4.

[0020] The front top frame 17 and the rear top frame 16 are fixed to the top of the front upright frame 15 and the rear upright frame 12 respectively, which enhances the structural strength of the upright frame. Users can move the trolley by pushing the front base 1 and the rear base 18 with the movable casters 3 through the handle 4 on the front side panel frame 5.

[0021] The front top frame 17 and the rear top frame 16 respectively reinforce the top structure of the front upright 15 and the rear upright 12 to prevent the uprights from deforming when bearing load or moving, and improve the overall structural strength.

[0022] The omnidirectional casters 3 are installed on both sides of the bottom of the front base 1 and the rear base 18, which facilitates the flexible movement of the trolley in the unfolded state and does not hinder the relative proximity of the bases when folded, thus balancing "mobility" and "folding".

[0023] A base plate 7 is foldably connected between the front base 1 and the rear base 18; the front end of the base plate 7 is movably connected to the front base 1 by a front pin 6, and the rear end of the base plate 7 is slidably connected to the vertical slide groove 13 on the rear stand 12 by a rear pin 8.

[0024] It balances the load-bearing capacity of the unfolded structure with the flexibility of the folded structure. When unfolded, the front pin 6 fixes the front end of the base plate 7, and the rear pin 68 is locked at the bottom of the vertical slide 13 to ensure that the base plate 7 is horizontal and stable and can bear items. When folded, the rear pin 68 slides up along the vertical slide 13 without hindering the rotation of the base plate 7, so as to achieve a compact folding of the base plate 7 with the rear base 18 and the front base 1.

[0025] The lower socket 25 has a rear connecting post 24 on its outer side, and the lower slot 21 has a front connecting post 22 on its outer side. An elastic band 11 connects the rear connecting post 24 and the corresponding front connecting post 22.

[0026] The elastic band 11 connects the rear connecting post 24 of the rear base 18 to the front connecting post 22 of the front base 1. When folded, it can help tighten the front base 1 and the rear base 18, further reducing the storage volume. When unfolded, the elastic band 11 remains taut, which protects the goods on the base plate 7 and prevents the goods from falling.

[0027] The front upright 15 has upper slots 20 and lower slots 21 distributed vertically, and the rear upright 12 has upper sockets 27 and lower sockets 25 distributed vertically. A top side plate 10 is movably connected within the upper socket 27. The top side plate 10 passes through the upper slot 20 and is connected by a limiting plate 14. The rear end of the top side plate 10 is movably connected to the upper U-shaped slot 28 within the upper socket 27 by a first pin 34, and the bottom of the rear end of the top side plate 10 has a ramp surface 35. Through the ramp surface 35, the platform... After the trolley unfolds, the upper socket 27 and the lower socket 25 leave the upper slot 20 and the lower slot 21 respectively. The ramp surface 35 then contacts the bottom of the upper slot 20. As the trolley continues to unfold, the bottom of the upper slot 20 slides relative to the ramp surface 35, which can lift the front end of the top side plate 10. This allows the front end of the top side plate 10 to rotate upward about the first pin 34 until the top side plate 10 is in a horizontal state. This facilitates the top side plate 10 to move horizontally backward along the upper slot 20 until the trolley unfolds.

[0028] The upper socket 27 and the lower socket 25 are respectively connected to the upper slot 20 and the lower slot 21; the lower socket 25 is provided with a lower U-shaped slot 26 for snapping into the top side plate 10.

[0029] Two-way positioning ensures stability during unfolding. When unfolded, the rear end of the top side panel 10 is fixed to the upper socket 27 by the first pin 34, and the front end of the top side panel 10 is fixed by the upper slot 20 and the limiting plate 14 to prevent shaking during use; when folded, the top side panel 10 rotates around the first pin 34 and finally snaps into the lower socket 25 to achieve a close fit and storage of the top side panel 10.

[0030] The design of the upper socket 27 corresponding to the upper slot 20 and the lower socket 25 corresponding to the lower slot 21 ensures accurate positioning of the top side panel 10 when unfolding / folding, avoiding misalignment and jamming.

[0031] The rear base 18 is also provided with a retaining buckle assembly 23 at the front end of the middle section. The front end of the retaining buckle assembly 23 extends out of the rear base 18 and is fixed with a pressure plate 19. The rear base 18 is provided with a U-shaped seat 30 at the front end of the middle section. Two sets of vertical pins 31 are symmetrically distributed inside the U-shaped seat 30. The retaining buckle assembly 23 includes a sleeve 234 sleeved on the vertical pins 31, a buckle 238 connected to the front side of the sleeve 234 by a rotating arm plate 236, a retaining ball 239 fixed in the middle of the inner side of the sleeve 234 by a connecting arm 235, a push rod 231 extending through the rear base 18, an I-shaped plate 232 fixed at the front end of the push rod 231, and a lifting column 233 fixed in the middle of the upper end of the I-shaped plate 232. The pressure plate 19 is fixed to the rear end of the push rod 231, and a return spring 29 is also sleeved on the push rod 231. The return spring 29 is located between the pressure plate 19 and the rear base 18. The snap ball 239 is snapped into the I-shaped plate 232. The lower rear part of the base plate 7 is provided with an inner groove 32. The top of the lifting column 233 extends into the inner groove 32. The front end of the inner groove 32 is provided with an abutting slope 33. The middle part of the front base 1 is provided with through slots 2 on both sides. The buckle 238 matches the corresponding through slot 2, and the inner side of the front end of the buckle 238 is also provided with a contact slope 237.

[0032] Integrated design of the latching component 23: A single operation enables multi-structure linkage. Pressing the pressure plate 19 simultaneously completes "lifting the bottom plate 7, folding the base 18, rotating the top side plate 10, and locking the buckle 238", eliminating the need for step-by-step operations and greatly improving folding efficiency.

[0033] The return spring 29 ensures stability during use. The return spring 29 is sleeved on the push rod 231, which can provide cushioning when the pressure plate 19 is kicked, and can also help the buckle 238 to lock tightly with the through slot 2 after folding, so as to prevent loosening in the folded state.

[0034] When the pressure plate 19 presses the abutment buckle assembly 23, the abutment buckle assembly 23 will lift the base plate 7, and after the rear side panel 9 is folded close to the front side panel 5, the abutment buckle assembly 23 will buckle with the front base 1. At the same time, the top side panel 10 will rotate downward until the top side panel 10 is inserted into the lower socket 25.

[0035] Specifically, when using it: Deployed status: All structures are in place, ensuring the trolley can be used normally (e.g., Figure 1 and Figure 2 (As shown).

[0036] The base plate 7 is in a horizontal state. Its front end is movably connected to the front base 1 via the front pin 6, and its rear end is slidably connected to the vertical slide groove 13 of the rear stand 12 via the rear pin 68. The base plate 7 is supported on the upper surface of the U-shaped seat 30, forming a stable bearing surface.

[0037] The rear end of the top side panel 10 is movably connected to the upper socket 27 of the rear upright 12 via the first pin 34, and the front end passes through the upper slot 20 of the front upright 15 and is fixed by the limiting plate 14. At this time, the top side panel 10 is horizontal and together with the front side panel 5 and the rear side panel 9, it forms a storage space. The top side panel 10 serves a protective function to prevent goods from falling.

[0038] The elastic band 11 is in a taut state and is located on both sides of the front side panel 5 and the rear side panel 9, which serves to protect the goods on the bottom plate 7 and prevent the goods from falling.

[0039] Folded state: When it is pressed against the buckle component 23, it is simultaneously stored.

[0040] Step 1: Trigger the core drive component. The operator uses a foot kick to press the pressure plate 19 against the rear end of the latch assembly 23, causing the push rod 231 inside the assembly to move forward, while simultaneously compressing the return spring 29.

[0041] Step 2: Lift the base plate 7 to create space for folding. The I-shaped plate 232 at the front end of the push rod 231 moves forward synchronously, and the lifting column 233 at its upper end pushes against the inner groove 32 at the lower end of the base plate 7. The upper end of the lifting column 233 abuts against the abutting inclined surface 33 at the front end of the inner groove 32, lifting the rear end of the base plate 7 upwards. At this time, the rear pin 68 at the rear end of the base plate 7 slides upwards along the vertical slide groove 13 of the rear support frame 12, and the base plate 7 rotates slightly around the front pin 6, disengaging from the horizontal bearing state (e.g., Figure 9 and Figure 10 (As shown).

[0042] Step 3: Fold the rear base 18 and simultaneously rotate the top side panel 10. Push the rear base 18 forward, bringing the rear stand 12 closer to the front stand 15; during this process, the top side panel 10 remains horizontal and moves forward along the upper slot 20 (as shown). Figure 11 As shown), the upper slot 20 provides a horizontal limit to the top side plate 10, ensuring that the rear upright 12 and the front upright 15 are in a vertical and parallel state close to each other, and that the rear upright 12 and the front upright 15 will not tip over. Simultaneously, under the elastic force of the return spring 29 on the pressure plate 19, the latch assembly 23 is reset (as shown). Figure 11 As shown), until the upper socket 27 is fully inserted into the upper slot 20 and the lower socket 25 is fully inserted into the lower slot 21, at this time, under the action of its own weight, the top side plate 10 rotates downward around the first pin 34 until the top side plate 10 is inserted into the lower U-shaped slot 26 of the lower socket 25 of the rear stand 12, completing the folding of the top side plate 10 (as shown). Figure 12 and Figure 13 (As shown).

[0043] Step 4: Locking the buckle to secure the folded state. When the rear base 18 moves forward until the contact slope 237 on the buckle 238 contacts the inner side of the corresponding through slot 2, the rotating arm plate 236 abutting against the buckle assembly 23 gradually opens. The locking ball 239 on the front side of the rotating arm plate 236 drives the I-shaped plate 232 to move forward, thereby causing the push rod 231 to drive the pressure plate 19 to move forward, and the return spring 29 is compressed again. Subsequently, the rear base 18 continues to move forward until the buckle 238 extends through the corresponding slot 2. At this time, under the elastic force of the return spring 29 on the pressure plate 19, the pressure plate 19 drives the I-shaped plate 232 to move backward and reset quickly via the push rod 231. The I-shaped plate 232 then drives the sleeve 234 to rotate around the vertical pin 31 of the U-shaped seat 30 via the locking ball 239 on the front side of the rotating arm plate 236, until the two sets of rotating arm plates 236 reset and close. Finally, the buckle 238 is locked at the front end of the through slot 2 (e.g., Figure 13 As shown), the entire folding and storage is completed. Even after folding, the front base 1 and rear base 18 with omnidirectional wheels 3 can still be pushed by the handle 4 to achieve normal movement of the folded trolley.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding and storage side panel trolley, comprising a front base and a rear base, characterized in that: A base plate is foldably connected between the front base and the rear base; The upper end of the front base is provided with a front side plate frame and front uprights located on both sides of the front side plate frame; the upper end of the rear base is provided with a rear side plate frame and rear uprights located on both sides of the rear side plate frame. The front support frame is provided with upper and lower slots distributed vertically, and the rear support frame is provided with upper and lower sockets distributed vertically. A top side plate is movably connected inside the upper socket, and the top side plate passes through the upper slot and is connected by a limiting plate. The rear base is also provided with a retaining buckle assembly at the front end of the middle section. The front end of the retaining buckle assembly extends out of the rear base and is fixed with a pressure plate. When the pressure plate presses the retaining buckle assembly, the retaining buckle assembly will lift the base plate. After the rear side panel frame is folded close to the front side panel frame, the retaining buckle assembly will buckle with the front base. At the same time, the top side panel rotates downward until the top side panel is inserted into the lower socket.

2. The folding and storage side panel trolley according to claim 1, characterized in that: The front side panel and the front upright are provided with a front top frame, and the rear side panel and the rear upright are provided with a rear top frame.

3. The folding and storage side panel trolley according to claim 1, characterized in that: Both the bottom sides of the front and rear bases are equipped with casters.

4. The folding and storage side panel trolley according to claim 1, characterized in that: The front panel frame is also equipped with a handle.

5. A folding and storage side panel trolley according to claim 1, characterized in that: The rear end of the top side plate is movably connected to the upper U-shaped slot in the upper socket by a first pin, and the bottom of the rear end of the top side plate is provided with a sloping surface. The upper socket and lower socket are respectively connected and matched with the upper slot and lower slot; The lower socket is provided with a lower U-shaped slot for snapping into the top side panel.

6. A folding and storage side panel trolley according to claim 1, characterized in that: The front end of the base plate is movably connected to the front base by a front pin, and the rear end of the base plate is slidably connected to the vertical groove on the rear stand by a rear pin.

7. A folding and storage side panel trolley according to claim 1, characterized in that: The lower socket has a rear connecting post on its outer side, and the lower slot has a front connecting post on its outer side. An elastic band connects the rear connecting post to the corresponding front connecting post.

8. A folding and storage side panel trolley according to claim 1, characterized in that: The rear base has a U-shaped seat at the front center, and two sets of vertical pins are symmetrically distributed inside the U-shaped seat. The abutting buckle assembly includes a sleeve fitted onto a vertical pin, a buckle connected to the front side of the sleeve by a rotating arm plate, a snap-fit ​​ball fixed in the middle of the inner side of the sleeve by a connecting arm, a push rod extending through and out of the rear base, an I-shaped plate fixed at the front end of the push rod, and a lifting column fixed in the middle of the upper end of the I-shaped plate. The pressure plate is fixed to the rear end of the push rod, and a return spring is also sleeved on the push rod. The return spring is located between the pressure plate and the rear base. The snap-fit ​​ball is snapped into the I-shaped disk; The bottom plate has an inner groove in the center of the rear part of the lower end, and the top of the lifting column extends into the inner groove. The top of the front end of the inner groove has an abutting slope. The front base has symmetrical through slots on both sides of the middle section. The buckle matches the corresponding through slot, and the inner side of the front end of the buckle is also provided with a contact slope.

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