Storage box

Abstract

The utility model provides a storage box, and belongs to the technical field of storage containers. The technical problem that materials of an existing large plastic storage box are broken frequently is solved. The storage box comprises a box body and a box cover, the box body comprises a rear side plate and two side protection plates, the storage box further comprises an upper fixing arm, a lower fixing arm and a power-assisted telescopic rod, the upper fixing arm and the lower fixing arm are arranged in a strip shape in the front-back direction, the upper fixing arm is fixedly connected to the inner side of the box cover through at least two front-back spaced connecting pieces, and the lower fixing arm is fixedly connected to the inner side of the box cover through at least two rear spaced connecting pieces. The lower fixing arm is fixedly connected to the inner side of the side protection plate through at least two connecting pieces which are spaced front and back, the upper fixing arm and the lower fixing arm are both metal pieces and are vertically opposite, and the rear end of the upper fixing arm is hinged to the rear end of the lower fixing arm so that the box cover can overturn front and back relative to the box body. The two ends of the power-assisted telescopic rod are hinged to the upper fixing arm and the lower fixing arm respectively. According to the utility model, the probability of breakage caused by local stress concentration of the box cover or the side protection plate in the overturning process is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage containers and relates to a storage box. Background Art

[0002] Plastic storage boxes are also commonly called plastic storage boxes, plastic storage boxes, plastic storage boxes, and plastic storage boxes. Plastic storage boxes are made of polyethylene (PE) or polypropylene (PP), which are safe and non-toxic. HDPE is relatively soft and tough, and is generally the first choice for household clothing storage.

[0003] The patent with authorization announcement number CN221025242U discloses a storage box with a door lock, including a cover for closing the top of the storage box and a main body for closing the middle and bottom of the storage box. The cover is rotatably connected to the main body, and the main body supports the cover. The cover has an open state and a closed state relative to the main body.

[0004] The above-mentioned storage box is assembled by injection molding, but there are still some shortcomings: in order to meet the user's large-capacity storage requirements, the size of the lid and the main body will also be designed to be larger. At this time, an assisting mechanism will be set between the lid and the body to assist the lid to flip open, and a large concentrated force is easily generated at the hinge position and the action position of the assisting mechanism. Due to the limited strength of the injection molding material itself, the action position often breaks. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned problems in the existing technology and provides a storage box. The technical problem to be solved by the present invention is that the existing large plastic storage boxes often suffer from material breakage.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] The foldable storage box is characterized in that the upper and lower fixed arms are arranged in a strip shape front to back, the upper fixed arm is fixedly connected to the inner side of the box cover by at least two connecting members spaced front to back, and the lower fixed arm is fixedly connected to the inner side of the side guard plate by at least two connecting members spaced front to back. The upper and lower fixed arms are both metal parts and are vertically opposite to each other. The rear end of the upper fixed arm is hinged to the rear end of the lower fixed arm so that the box cover can be flipped forward and backward relative to the box body, and the two ends of the power-assisted telescopic rod are respectively hinged to the upper and lower fixed arms.

[0008] The box body is used to store items, and the box lid can close the box body to provide a closed storage environment. The rear side panels and side guards form protection for the inner cavity of the box body. By fixing a strip-shaped upper fixed arm on the inner side of the box lid, a strip-shaped lower fixed arm is set on the inner side of the side guard, and the rear end of the upper fixed arm is hinged to the rear end of the lower fixed arm to guide the flipping of the box lid, and at the same time, the two ends of the power-assisted telescopic rod are respectively hinged to the upper fixed arm and the lower fixed arm, so that the upper fixed arm and the lower fixed arm are stronger than the box body and the box lid, and the strip-shaped upper fixed arm and the lower fixed arm are respectively connected to the box lid and the box body through multiple points for more stable installation, so that the position where the box lid and the box body are hinged has higher connection stability. and anti-deformation ability, and at the same time, it can also provide skeleton support effect for the box cover and side guard plate to reduce their deformation. The power-assisted telescopic rod can be an existing hydraulic-assisted, pneumatic-assisted or spring-assisted telescopic rod. The power-assisted telescopic rod can be extended when the box cover is opened to push the upper fixed arm and the lower fixed arm to open to provide assistance, making it easier for users to open larger box covers, and the force at both ends of the power-assisted telescopic rod directly acts on the upper fixed arm and the lower fixed arm with higher strength, which is conducive to distributing the force of the power-assisted telescopic rod on the upper fixed arm and the lower fixed arm to various parts of the box cover and side guard plate through multiple connection points, reducing the probability of local force concentration on the box cover or side guard plate causing breakage during the flipping process.

[0009] In the above storage box, the two ends of the power-assisted telescopic rod are hinged to the middle of the upper fixed arm and the front end of the lower fixed arm, respectively. In this way, when the box lid is opened, the power-assisted telescopic rod, the upper fixed arm and the lower fixed arm are arranged in a triangle, making the overall structure of the hinge assembly more stable.

[0010] In the aforementioned storage box, the cross-section of the front half of the upper fixing arm is a downwardly opening U-shaped. The upper side of the front half of the upper fixing arm abuts the inner side of the box lid, and the left-right width of the front half of the upper fixing arm is greater than the left-right width of the rear half of the upper fixing arm. This ensures that the front half of the upper fixing arm maintains lightweight while also having higher structural strength and stability. The wider front half contacts the box lid, effectively increasing the contact area, improving the stability of the connection, and reducing the probability of plastic fracture at the joint.

[0011] In the aforementioned storage box, the power-assisted telescopic rod can partially fit between the two side walls of the front half of the upper fixed arm when the lid is closed. Thus, when the lid is closed, the upper and lower fixed arms move relative to each other, allowing the power-assisted telescopic rod to fit between the two side walls of the front half of the upper fixed arm to avoid interference and making the closed structure more compact.

[0012] In the aforementioned storage box, the upper edge of the rear side panel has a clearance notch, and the rear end of the lower fixed arm is located in the clearance notch. The hinged joint of the upper and lower fixed arms is located in the rear side panel area, making it easy to place the upper and lower fixed arms into the clearance notch from top to bottom during assembly, thereby facilitating assembly.

[0013] In the above storage box, the front end of the lower fixed arm is tilted upward, which is conducive to the power-assisted telescopic rod being accommodated above the middle section of the lower fixed arm when the box cover is closed, and the structural arrangement is more compact.

[0014] The aforementioned storage box further includes a metal frame beam arranged in a horizontal direction, which is fixedly connected to the upper edge of the inner side surface of the rear side panel. By fixing the frame beams in a horizontal direction to the side of the rear side panel and positioning the frame beams close to the hinge position, the frame beams provide additional strength support, strengthen the upper edge of the rear side panel, and make the upper edge of the rear side panel more stable. Together with the side guard plate, the frame ensures the stability of the entire box body, thereby ensuring smooth and stable opening of the box lid.

[0015] In the above storage box, the two power-assist telescopic rods are respectively arranged at the two ends of the frame beam. The two power-assist telescopic rods are arranged at the two ends of the frame beam, which is conducive to ensuring the balanced effect of the power-assist device and further ensuring the shape stability of the box body during the pushing process.

[0016] In the aforementioned storage box, the frame beam has a U-shaped cross-section, resting against the rear side panels. Several columnar connectors are integrally connected to the rear side panels, extending through the frame beam in the front-to-back direction and securely attached to the frame beam. These connectors position the frame beam, ensuring precise installation. The U-shaped frame beam retains a significant amount of rigidity, and its open end provides clearance for the connectors during assembly. This means the connectors only need to penetrate the thickness of one side of the frame beam to achieve positioning, making assembly convenient and labor-saving.

[0017] In the above storage box, the side of the rear side plate has two horizontally arranged limit plates, and the frame beam is vertically positioned between the two limit plates. In this way, the position of the frame beam can be constrained by the limit plates, making the position of the frame beam more stable.

[0018] In the aforementioned storage box, the side surfaces of the rear side panels further include a plurality of vertically arranged ribs, which are integrally connected to the stopper plate. These ribs enhance the overall strength of the rear side panels, stabilize their shape, and help maintain a stable relative position between the stopper plate and the frame beam.

[0019] In the aforementioned storage box, the side surfaces of the rear side panels further include two vertically disposed positioning plates, which are spaced laterally between the two limiting plates. The ends of the frame beam are opposed to the two positioning plates. This allows the two positioning plates to form a frame-like structure with the limiting plates at the ends of the frame beam, thereby enhancing the overall strength of the positioning plates and limiting plates, and ensuring a stable installation of the frame beam.

[0020] In the above storage box, the box cover, rear side panels and side guards are all injection molded parts, which helps to ensure sufficient basic strength of the box cover, rear side panels and side guards and improves connection stability.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] This storage box can meet the requirements of large-capacity storage, ensure that the operation of flipping and opening the box lid is more labor-saving and the hinged structure of the box lid is stable. In addition, there will be no phenomenon of local stress fracture of the box lid and the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0024] Figure 2 It is a partial three-dimensional schematic diagram of the embodiment after the box cover is hidden.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper fixed arm, the lower fixed arm and the power-assisted telescopic rod assembly in this embodiment.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper fixed arm, the lower fixed arm and the power-assisted telescopic rod assembly in the present embodiment when the box cover is open.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of this embodiment when the box cover is open.

[0028] Figure 6 yes Figure 5 Enlarged view of part A in .

[0029] Figure 7 It is a schematic diagram of the three-dimensional exploded structure of the local structure of this embodiment.

[0030] In the figure, 1, box cover;

[0031] 2. Box body; 21. Rear side panel; 211. Hinge portion; 212. Connecting portion; 213. Limiting plate portion; 214. Rib portion; 215. Positioning plate portion; 216. Clearance notch; 22. Side guard plate; 23. Front side panel;

[0032] 3. Skeleton beam; 4. Power-assisted telescopic rod; 5. Lock body; 6. Upper fixed arm; 7. Lower fixed arm. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] like Figure 1-6 As shown, the storage box includes an injection-molded box cover 1 and a box body 2 having a rear side panel 21, two side guard panels 22 and a front side panel 23. The box cover 1 is connected to a lock body for locking the box cover 1 and the box body 2. The rear side panel 21, the two side guard panels 22 and the front side panel 23 are all injection-molded parts. The upper edge of the rear side panel 21 has three hinges 211 evenly spaced in the horizontal direction. The rear side of the box cover 1 is hinged on the hinge 211. The left and right sides of the inner side of the box cover 1 are fixedly connected to the hinge 211. There are upper fixed arms 6 arranged in a strip shape in the front and back, and lower fixed arms 7 arranged in a strip shape in the front and back are fixedly connected to the inner sides of the two side guard plates 22. Specifically, the upper fixed arm 6 is fixed to the box cover 1 by two screws (not shown) that are spaced front and back and pass through the upper fixed arm 6, and the lower fixed arm 7 is fixed to the side guard plates 22 by three screws (not shown) that are spaced front and back and pass through the lower fixed arm 7 left and right. The upper fixed arm 6 and the lower fixed arm 7 are both metal parts and are vertically opposite to each other. The rear end of the upper fixed arm 6 is hinged to the rear end of the lower fixed arm 7 and the hinge axis center line of the two is collinear with the hinge axis center line of the box cover 1 and the hinge part 211. The storage box also includes two power-assisted telescopic rods 4 that are hinged at both ends to the upper and lower fixed arms 7 of the upper fixed arm 6. The power-assisted telescopic rod 4 is an existing hydraulic telescopic rod. The cross-section of the front half of the upper fixed arm 6 is U-shaped with an opening facing downward, and the rear half of the upper fixed arm 6 is in the shape of a fork arm set backward. The rear end of the lower fixed arm 7 is clamped and hinged to the upper fixed arm 6, the upper side surface of the front half of the upper fixed arm 6 is in contact with the inner side of the box cover 1, and the left and right width dimensions of the front half of the upper fixed arm 6 are greater than the left and right width dimensions of the rear half of the upper fixed arm 6. When the box cover 1 is closed, the power-assisted telescopic rod 4 is partially accommodated between the two side walls of the front half of the upper fixed arm 6; the upper edge of the rear side plate 21 has two clearance notches 216, the rear ends of the two lower fixed arms 7 are respectively located in the two clearance notches 216, and the front ends of the lower fixed arms 7 are tilted upward.

[0035] like Figure 2 、 Figure 5-7As shown, the storage box also includes a skeleton beam 3 arranged transversely along the rear side panel 21. The skeleton beam 3 is fixedly connected to the upper edge of the inner side surface of the rear side panel 21. The three hinged parts 211 are all located above the skeleton beam 3. Two power-assisted telescopic rods 4 are respectively arranged at the two ends of the skeleton beam 3. The skeleton beam 3 is a hollow metal pipe. Specifically, the cross-section of the skeleton beam 3 is U-shaped. The side of the skeleton beam 3 with an open opening is against the rear side panel 21. Four columnar connecting parts 212 are integrally connected to the rear side panel 21. The connecting parts 212 pass through the skeleton beam 3 in the front-to-back direction and are fixed to the skeleton beam 3 by screws (not shown). The side of the rear side panel 21 has two horizontally arranged limit plate parts 213, and the skeleton beam 3 is vertically positioned between the two limit plate parts 213. The side of the rear side panel 21 also has eighteen vertically arranged rib parts 214, and the rib parts 214 are integrally formed with the limit plate parts 213. The side of the rear side plate 21 also has two vertically arranged positioning plate portions 215, and the two positioning plate portions 215 are arranged between the two limit plate portions 213 along the horizontal interval. The two ends of the skeleton beam 3 are respectively opposite to the two positioning plate portions 215, and there is a gap between the two ends of the skeleton beam 3 and the opposite positioning plate portions 215.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A storage box, comprising a box cover (1) and a box body (2), wherein the box body comprises a rear side plate (21) and two side guard plates (22) connected to the left and right sides of the rear side plate (21), characterized in that: The storage box also includes an upper fixed arm (6), a lower fixed arm (7) and a power-assisted telescopic rod (4), wherein the upper fixed arm (6) and the lower fixed arm (7) are both arranged in a strip shape in the front and rear directions, the upper fixed arm (6) is fixedly connected to the inner side of the box cover (1) through at least two connecting pieces spaced front and rear, and the lower fixed arm (7) is fixedly connected to the inner side of the side guard plate (22) through at least two connecting pieces spaced front and rear. The upper fixed arm (6) and the lower fixed arm (7) are both metal parts and are opposite to each other in the upper and lower directions. The rear end of the upper fixed arm (6) is hinged to the rear end of the lower fixed arm (7) so that the box cover (1) can be flipped forward and backward relative to the box body (2), and the two ends of the power-assisted telescopic rod (4) are respectively hinged to the upper fixed arm (6) and the lower fixed arm (7).

2. The storage box according to claim 1, characterized in that: The two ends of the power-assisted telescopic rod (4) are respectively hinged to the middle of the upper fixed arm (6) and the front end of the lower fixed arm (7).

3. The storage box according to claim 1, characterized in that: The cross section of the front half of the upper fixed arm (6) is in a U-shape with an opening facing downward, the upper side surface of the front half of the upper fixed arm (6) abuts against the inner side of the box cover (1), and the left and right width dimensions of the front half of the upper fixed arm (6) are greater than the left and right width dimensions of the rear half of the upper fixed arm (6).

4. The storage box according to claim 3, characterized in that: When the box cover (1) is closed, the power-assisted telescopic rod (4) can be partially embedded between the two side walls of the front half of the upper fixed arm (6).

5. The storage box according to claim 1 or 2, characterized in that: The front end of the lower fixed arm (7) is tilted upward.

6. The storage box according to claim 1 or 2, characterized in that: The storage box further comprises a frame beam (3) arranged in the left-right direction, wherein the frame beam (3) is a metal part and is fixedly connected to the upper edge of the rear side plate (21). The two power-assisted telescopic rods (4) are respectively arranged at the two ends of the frame beam (3).

7. The storage box according to claim 6, characterized in that: The cross section of the skeleton beam (3) is U-shaped. The skeleton beam (3) abuts against the rear side plate (21). The rear side plate (21) is integrally connected with a plurality of columnar connecting portions (212). The connecting portions (212) penetrate the skeleton beam (3) in the front-to-back direction and are fixedly connected to the skeleton beam (3).

8. The storage box according to claim 6, characterized in that: The side surface of the rear side plate (21) has two horizontally arranged limit plate portions (213), and the skeleton beam (3) is vertically positioned between the two limit plate portions (213); the side surface of the rear side plate (21) also has a plurality of vertically arranged rib portions (214), and the rib portions (214) are integrally fixedly connected to the limit plate portions (213); the side surface of the rear side plate (21) also has two vertically arranged positioning plate portions (215), and the two positioning plate portions (215) are arranged between the two limit plate portions (213) along a horizontal interval, and the two ends of the skeleton beam (3) are respectively opposite to the two positioning plate portions (215); a gap is left between at least one end of the skeleton beam (3) and the opposite positioning plate portion (215).

9. The storage box according to claim 1 or 2, characterized in that: The box cover (1), rear side plate (21) and side guard plate (22) are all injection-molded parts.

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