A double hinged folding frame box

Abstract

The utility model belongs to the container equipment technical field especially relates to a double folding folding frame box. Including the chassis, upper end wall, lower corner post, end beam body and set up in the corner spare of upper end wall and lower corner post top, its characterized in that, upper end wall and lower corner post are connected through double turning hinge with chassis respectively. Double turning hinge includes upper turning hinge and lower turning hinge, upper turning hinge is fixedly connected with upper end wall bottom, is used for realizing the direction of upper surface of upper end wall to the chassis overturn folding. Lower turning hinge is fixedly connected with lower corner post bottom, is used for realizing the direction of side of lower corner post to the chassis overturn folding. Its reduce the overall profile size under the empty box state, facilitate efficient stacking and transportation.

Description

Technical Field

[0001] This utility model belongs to the field of container equipment technology, and in particular relates to a double-folding frame box. Background Technology

[0002] In the logistics and warehousing sector, the drawbacks of traditional frame containers are gradually becoming apparent, posing a challenge to industry efficiency and cost control.

[0003] Traditional flat rack containers lack a top and side walls, and when not in use, their massive size occupies a significant amount of storage and transportation space. This drastically increases the cost of transporting and storing empty containers, placing a heavy economic burden on businesses. Furthermore, their fixed structure makes them poorly adaptable to large or irregularly shaped goods. During loading and unloading, not only is operation extremely inconvenient, but it also struggles to accommodate the simultaneous operation of multiple pieces of equipment such as forklifts and cranes, resulting in lengthy loading and unloading times. This severely impacts supply chain efficiency, causing goods to waste excessive time in the circulation process.

[0004] While existing folding frame boxes have seen some improvements, they typically only support unidirectional flipping of the end walls, and the overall height remains relatively high after folding, making compact stacking impossible. Some structures attempt to fold corner columns, but due to the unidirectional folding direction or insufficient connection strength, it is difficult to balance space utilization and structural reliability. Summary of the Invention

[0005] This utility model addresses the shortcomings of existing technologies by providing a double-folding frame box.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a double-flip folding frame box, comprising a base frame, an upper wall, a lower corner post, an end beam, and corner pieces disposed on the top of the upper wall and the lower corner post. The upper wall and the lower corner post are respectively connected to the base frame via double-flip hinges. The double-flip hinges include an upward-flipping hinge and a downward-flipping hinge. The upward-flipping hinge is fixedly connected to the bottom of the upper wall, enabling the upper wall to flip and fold towards the upper surface of the base frame. The downward-flipping hinge is fixedly connected to the bottom of the lower corner post, enabling the lower corner post to flip and fold towards the side of the base frame.

[0007] Furthermore, the double-flip hinge also includes a pair of parallel outer hinge plates and an inner hinge plate, forming an installation space between the inner hinge plate and the outer hinge plate. The double-flip hinge also includes an upper corner plate and a lower corner plate. The upper corner plate spans and is fixedly connected between the upper ends of the inner hinge plate and the outer hinge plate. The lower corner plate spans and is fixedly connected between the lower ends of the inner hinge plate and the outer hinge plate. The double-flip hinge also includes at least two back plates, one of which is located behind the inner hinge plate and the outer hinge plate and is fixedly connected to the upper corner plate; the other back plate is located behind the inner hinge plate and the outer hinge plate and is fixedly connected to the lower corner plate. The inner hinge plate, the outer hinge plate, the upper corner plate, the lower corner plate, and the two back plates are welded together to form a box structure, and the flip-up hinge and the flip-down hinge are accommodated within the installation space of this box structure.

[0008] Furthermore, both the upper and lower corner plates have U-shaped openings; these U-shaped openings provide clearance for the movement of the upward and downward hinges during the flipping process.

[0009] Furthermore, the inner hinge plate and the outer hinge plate are provided with two pairs of mounting holes respectively; the double-flip hinge also includes two flip shafts, one of which passes through one pair of mounting holes and rotatably connects the upper flip hinge between the inner hinge plate and the outer hinge plate; the other flip shaft passes through another pair of mounting holes and rotatably connects the lower flip hinge between the inner hinge plate and the outer hinge plate; at least one end of each flip shaft is provided with a shaft baffle to prevent the flip shaft from axially slipping off.

[0010] Furthermore, a flip shaft bushing is provided in the mounting hole, and the flip shaft bushing is sleeved on the flip shaft to limit the axial movement of the hinge.

[0011] Furthermore, the upward hinge and / or downward hinge are provided with an oil injection nozzle, which is connected to the surface of the flip shaft through an oil passage for injecting lubricant between the flip shaft and the flip shaft bushing.

[0012] Furthermore, the inner side of the back plate fixed to the upper corner plate is provided with an upper square pin groove; the inner side of the back plate fixed to the lower corner plate is provided with a lower square pin groove; the double-flip hinge is also provided with an upper pin and a lower pin; when the upper wall is in an upright or folded state, the upper pin can be inserted into the upper square pin groove to fix the upward-flipping hinge; when the lower corner post is in an upright or folded state, the lower pin can be inserted into the lower square pin groove to fix the downward-flipping hinge.

[0013] Furthermore, the base frame is also equipped with a locking unit for locking the corresponding corner pieces after the upper wall and / or the lower corner post are folded.

[0014] Compared with the prior art, this utility model has the following advantages.

[0015] This utility model proposes a double-flip folding frame box, which reduces the overall outline size of the empty box by flipping and folding the upper wall and lower corner column towards the upper surface and side of the base frame, respectively, making it easier to stack and transport efficiently. At the same time, it adopts a high-strength box-type double-flip hinge structure to ensure load-bearing stability in the unfolded state while achieving flexible folding. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0017] Figure 1 A three-dimensional view of the double-fold hinge of a double-folding folding frame box. Figure 1 .

[0018] Figure 2 A three-dimensional view of the double-fold hinge of a double-folding folding frame box. Figure 2 .

[0019] Figure 3 A three-dimensional view of a double-fold hinged folding frame box.

[0020] Figure 4 A partial view of a double-fold hinged folding frame box.

[0021] Figure 5 This is a three-dimensional view of a double-fold hinged folding frame box.

[0022] Figure 6 This is a partial view of a double-fold hinged folding frame box.

[0023] Figure 7 Partial view of the double-fold hinge locking unit of a double-fold folding frame box Figure 1 .

[0024] Figure 8 Partial view of the double-fold hinge locking unit of a double-fold folding frame box Figure 2 .

[0025] Figure 9 This is a three-dimensional view of the lower corner post of the double-fold hinge of a double-fold folding frame box.

[0026] Figure 10 This is a schematic diagram of a double-flip folding frame box using the double-flip hinge alone.

[0027] Figure 11This is a schematic diagram showing the use of two double-fold hinges in a double-folding frame box.

[0028] Figure 12 This is a schematic diagram showing the combined use of three double-fold hinges in a double-folding frame box.

[0029] In the diagram, 1. Base frame; 2. Upper wall; 3. Lower corner post; 4. End beam; 6. Double hinge; 7. Locking unit; 8. Corner piece; 601. Outer hinge plate; 602. Inner hinge plate; 603. Back plate; 604. Upward hinge; 605. Upper corner piece plate; 606. Downward hinge; 607. Lower corner piece plate; 608. Flip shaft; 609. Shaft baffle; 610. Square pin groove; 611. Upper pin; 612. Lower pin; 613. Flip shaft bushing; 614. Oil nozzle; 701. Support; 702. Pin; 703. Compression spring. Detailed Implementation

[0030] like Figure 1-12 As shown, this embodiment of a double-flip folding frame box includes a base frame 1, an upper wall 2, a lower corner post 3, an end beam 4, and corner pieces 8 disposed on the top of the upper wall 2 and the lower corner post 3. The upper wall 2 and the lower corner post 3 are respectively connected to the base frame 1 via double-flip hinges 6. The double-flip hinges 6 include an upward-flipping hinge 604 and a downward-flipping hinge 606. The upward-flipping hinge 604 is fixedly connected to the bottom of the upper wall 2, used to achieve the flipping and folding of the upper wall 2 towards the upper surface of the base frame 1. The downward-flipping hinge 606 is fixedly connected to the bottom of the lower corner post 3, used to achieve the flipping and folding of the lower corner post 3 towards the side of the base frame 1.

[0031] Furthermore, the double-hinged hinge 6 also includes a pair of parallel outer hinge plates 601 and inner hinge plates 602, forming an installation space between the inner hinge plate 602 and the outer hinge plate 601. The double-hinged hinge 6 also includes an upper corner plate 605 and a lower corner plate 607. The upper corner plate 605 spans and is fixed between the upper ends of the inner hinge plate 602 and the outer hinge plate 601. The lower corner plate 607 spans and is fixed between the lower ends of the inner hinge plate 602 and the outer hinge plate 601. The double-flip hinge 6 also includes at least two back plates 603, one of which is located behind the inner hinge plate 602 and the outer hinge plate 601 and is fixedly connected to the upper corner plate 605; the other back plate 603 is located behind the inner hinge plate 602 and the outer hinge plate 601 and is fixedly connected to the lower corner plate 607; the inner hinge plate 602, the outer hinge plate 601, the upper corner plate 605, the lower corner plate 607 and the two back plates 603 are welded together to form a box structure, and the upward-flipping hinge 604 and the downward-flipping hinge 606 are accommodated in the installation space of the box structure.

[0032] Furthermore, both the upper corner plate 605 and the lower corner plate 607 have U-shaped opening structures; these U-shaped opening structures provide clearance for the movement of the upward hinge 604 and the downward hinge 606 during the flipping process.

[0033] Furthermore, the inner hinge plate 602 and the outer hinge plate 601 are provided with two pairs of mounting holes respectively; the double-flip hinge 6 also includes two flip shafts 608, one of which passes through a pair of mounting holes and rotatably connects the upper flip hinge 604 between the inner hinge plate 602 and the outer hinge plate 601; the other flip shaft 608 passes through another pair of mounting holes and rotatably connects the lower flip hinge 606 between the inner hinge plate 602 and the outer hinge plate 601; at least one end of each flip shaft 608 is provided with a shaft baffle 609 to prevent the flip shaft 608 from axially slipping off.

[0034] Furthermore, the back plate 603, which is fixed to the upper corner plate 605, has an upper square pin groove 610 on its inner side; the back plate 603, which is fixed to the lower corner plate 607, has a lower square pin groove 610 on its inner side; the double-flip hinge 6 is also equipped with an upper pin 611 and a lower pin 612; when the upper wall 2 is in an upright or folded state, the upper pin 611 can be inserted into the upper square pin groove 610 to fix the upward hinge 604; when the lower corner post 3 is in an upright or folded state, the lower pin 612 can be inserted into the lower square pin groove 610 to fix the downward hinge 606.

[0035] Example 1: Based on a 40GP folding case, the main purpose is to achieve the flipping and folding of the upper wall and lower corner posts. The upper wall is flipped 90° and pressed against the upper surface of the base frame. The lower corner posts are flipped upwards 90° so that they are pressed against the side of the base frame. Corner brackets are provided at the top of the upper wall and the top of the lower corner posts. After the upper wall and lower corner posts are flipped and folded, locking units are provided at their respective corner bracket positions. The pins of the locking units are inserted into the holes provided on the corner brackets to achieve the limiting and locking of the upper wall and lower corner posts. The upper and lower corner bracket plates, inner and outer hinge plates and back plate are welded into a box structure, which significantly enhances the overall strength and can withstand greater external forces.

[0036] Example 2: A pair of holes are provided in the housing structure for installing the tilting shaft. Tilting shaft bushings are welded to the inner walls of the holes. The tilting shaft is inserted into the bushing and the housing structure. A shaft baffle is welded to one end of the tilting shaft to prevent it from sliding axially out of the hole and falling off. The tilting shaft bushings ensure the stability of the tilting shaft, preventing axial movement of the upper and lower tilting hinges on the tilting shaft, while maintaining necessary mobility. Oil injection holes are provided on the upper and lower tilting hinges to lubricate the rotational friction between the hinges and the tilting shaft. Lubricating grease can be periodically injected to reduce friction, making the hinges rotate more smoothly and extending their service life.

[0037] Example 3: When the upward-folding hinge is in an upright or folded state, the upper pin is inserted for fixation, enhancing the stability of the structure in different states and preventing displacement due to collisions or vibrations, ensuring safety and reliability during use and transportation. When the downward-folding hinge is in an upright or folded state, the lower pin is inserted for fixation, enhancing the stability of the structure in different states and preventing displacement due to collisions or vibrations, ensuring safety and reliability during use and transportation. Square pin slots are provided on the inner side of each back panel of the box structure. When the lower corner column is upright, the lower pin is inserted into the corresponding square pin slot for double fixation, preventing displacement during transportation. When the upper wall is upright, the upper pin is inserted into the corresponding square pin slot for double fixation, preventing displacement during transportation.

[0038] Example 4: A notch is made in the lower flange plate of the side beam of the base frame to facilitate the retraction of the lower corner column, and a locking unit is welded and installed at the corresponding position. Since the locking structure is a conventional technique, it will not be described in detail here; only one possible implementation is provided: the locking unit is pluggable. After the lower corner column is fully retracted, the pin is inserted into the corner fitting hole at the top of the lower corner plate, forming a rigid limit to prevent the corner column from accidentally falling off during travel bumps or hoisting. There are multiple locking units, the number corresponding to the number of upper wall sections and lower corner columns. Each locking unit 7 includes a support 701 fixed to the base frame 1. The support 701 contains a pin 702 and a compression spring 703 arranged in the insertion and removal direction. When the upper wall 2 is folded flat on the upper surface of the base frame 1, the pin 702 can be inserted into the corner piece 8 hole at the top of the upper wall 2 under the elastic force of the compression spring 703 to achieve locking. And / or, when the lower corner post 3 is folded up and attached to the side of the base frame 1, the pin 702 can be inserted into the corner piece 8 hole at the top of the lower corner post 3 under the elastic force of the compression spring 703 to achieve locking.

[0039] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A double-folding frame box, comprising a base frame (1), an upper wall (2), a lower corner post (3), an end beam (4), and corner pieces (8) disposed on the top of the upper wall (2) and the lower corner post (3), characterized in that, The upper wall (2) and the lower corner column (3) are respectively connected to the base frame (1) by double hinges (6); The double-flip hinge (6) includes an upward-flipping hinge (604) and a downward-flipping hinge (606). The upward-flipping hinge (604) is fixedly connected to the bottom of the upper wall (2) and is used to realize the flipping and folding of the upper wall (2) toward the upper surface of the base frame (1). The downward hinge (606) is fixedly connected to the bottom of the lower corner post (3) to realize the flipping and folding of the lower corner post (3) towards the side of the base frame (1).

2. The double-folding frame box according to claim 1, characterized in that, The double hinge (6) also includes a pair of parallel outer hinge plates (601) and inner hinge plates (602), with an installation space formed between the inner hinge plates (602) and the outer hinge plates (601); The double-flip hinge (6) also includes an upper corner plate (605) and a lower corner plate (607); the upper corner plate (605) spans and is fixed between the upper ends of the inner hinge plate (602) and the outer hinge plate (601); The lower corner plate (607) spans and is fixed between the lower ends of the inner hinge plate (602) and the outer hinge plate (601); The double-flip hinge (6) further includes at least two back plates (603), one of which is located behind the inner hinge plate (602) and the outer hinge plate (601) and is fixedly connected to the upper corner plate (605); the other back plate (603) is located behind the inner hinge plate (602) and the outer hinge plate (601) and is fixedly connected to the lower corner plate (607). The inner hinge plate (602), outer hinge plate (601), upper corner plate (605), lower corner plate (607) and two back plates (603) are welded together to form a box structure, and the upward hinge (604) and downward hinge (606) are accommodated in the installation space of the box structure.

3. A double-folding frame box according to claim 2, characterized in that, Both the upper corner plate (605) and the lower corner plate (607) are U-shaped opening structures; the U-shaped opening structure provides clearance space for the movement of the upward hinge (604) and the downward hinge (606) during the flipping process.

4. A double-folding frame box according to claim 2, characterized in that, The inner hinge plate (602) and the outer hinge plate (601) are provided with two pairs of mounting holes respectively; the double-flip hinge (6) also includes two flip shafts (608), one of which is inserted through a pair of mounting holes and rotatably connects the upper flip hinge (604) between the inner hinge plate (602) and the outer hinge plate (601); the other flip shaft (608) is inserted through another pair of mounting holes and rotatably connects the lower flip hinge (606) between the inner hinge plate (602) and the outer hinge plate (601); at least one end of each flip shaft (608) is provided with a shaft baffle (609) to prevent the flip shaft (608) from axially slipping.

5. A double-folding frame box according to claim 4, characterized in that, The mounting hole is provided with a flip shaft bushing (613), which is sleeved on the flip shaft (608) to limit the axial movement of the hinge.

6. A double-folding frame box according to claim 5, characterized in that, The upward hinge (604) and / or downward hinge (606) are provided with an oil injection nozzle (614), which is connected to the surface of the flip shaft (608) through an oil passage and is used to inject lubricant between the flip shaft (608) and the flip shaft bushing (613).

7. A double-folding frame box according to claim 2, characterized in that, The back plate (603), which is fixedly connected to the upper corner plate (605), has an upper square pin groove (610) on its inner side. The back plate (603), which is fixedly connected to the lower corner plate (607), has a lower square pin groove (610) on its inner side. The double hinge (6) is also equipped with an upper pin (611) and a lower pin (612). When the upper wall (2) is in an upright or folded state, the upper pin (611) can be inserted into the upper square pin groove (610) to fix the upward hinge (604). When the lower corner post (3) is in an upright or folded state, the lower pin (612) can be inserted into the lower square pin groove (610) to fix the downward hinge (606).

8. A double-folding frame box according to claim 1, characterized in that, The base frame (1) is also equipped with a locking unit (7) for locking the corresponding corner piece (8) after the upper wall (2) and / or the lower corner post (3) are folded.

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