Bottom side beam, underframe and folding box

Abstract

The utility model provides a bottom side beam, a bottom frame and a folding box. The bottom side beam comprises an upper wing plate, a lower wing plate and a web plate. The upper wing plate is arranged in the length direction of the bottom side beam. The lower wing plate is arranged in the length direction of the bottom side beam and located below the upper wing plate. The web is arranged between the upper wing plate and the lower wing plate and connected to the upper wing plate and the lower wing plate. The web plates comprise end web plates and at least one middle web plate, the end web plates are arranged in pairs, the two end web plates in pairs are spaced in the length direction of the bottom side beam, and the middle web plates are arranged between the two end web plates in pairs. The end web plates and the middle web plates are arranged in a staggered mode in the width direction of the bottom side beams. According to the bottom side beam, the length of the upper wing plate protruding out of the web plate in the width direction of the bottom side beam is more appropriate, the overall structural strength and stability of the bottom side beam are improved, and therefore the number of the reinforcing rib plates arranged at the position of the bottom side beam can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of container structure more particularly to a bottom side beam, underframe and folding box. BACKGROUND

[0002] The folding box as a special container can be stacked and chained together when returning empty, thereby reducing the space occupied when returning empty. The folding box generally comprises an underframe and two end frames respectively located at both ends of the underframe. A fixed hinge is connected at each of the four corners of the underframe. The two sides of each end frame are respectively connected with movable hinges, and the movable hinges on both sides of the end frame are respectively connected with the two fixed hinges at one end of the underframe, and the movable hinges and the fixed hinges are pivoted by hinge pins. In this way, the end frame can be rotated relative to the underframe, and the end frame can be folded horizontally on the underframe. Since the end frame of the folding box is heavy, it is not convenient to manually unfold the end frame by hand, and a resilient support member needs to be provided on the underframe. The resilient support member provides elastic support force to the end frame when the end frame is unfolded upward, assisting the unfolding of the end frame. The resilient support member provides elastic support to the end frame when the end frame is folded toward the underframe, to buffer the impact force generated by the end frame falling on the underframe. The existing folding box generally uses a leaf spring or a tension spring as a resilient support member, one end of which is connected with the I-shaped bottom side beam of the underframe, and the other end is a resilient free end or connected with the end frame. This resilient support member is generally installed at both ends of the bottom side beam of the folding box, occupying the space of the bottom side beam. If the web of the bottom side beam is offset to one side, the stability of the I-shaped bottom side beam with the offset web will be poor, and instability may occur under heavy load.

[0003] Therefore, it is necessary to provide a bottom side beam, underframe and folding box to at least partially solve the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the detailed description section. The summary section of the utility model does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, and even less to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the utility model provides a bottom side beam in the first aspect, which comprises:

[0006] An upper wing plate is arranged along the length direction of the bottom side beam;

[0007] A lower wing plate is arranged along the length direction of the bottom side beam and located below the upper wing plate; and

[0008] a web plate, the web plate being arranged between the upper panel and the lower panel, the web plate being connected to the upper panel and the lower panel;

[0009] the web plate comprises end web plates and at least one intermediate web plate, the end web plates are arranged in pairs, two end web plates in each pair are spaced along the length direction of the bottom side beam, the intermediate web plate is arranged between two end web plates in each pair,

[0010] wherein, along the width direction of the bottom side beam, the end web plates are staggered with the intermediate web plate.

[0011] Optionally, the end web plates and the intermediate web plate are both arranged along the length direction of the bottom side beam.

[0012] Optionally, along the width direction of the bottom side beam, the intermediate web plate is located in the middle part of the upper panel and / or the lower panel.

[0013] Optionally, the web plate further comprises a connecting web plate, the connecting web plate is arranged between the end web plate and the intermediate web plate, the connecting web plate is connected to the end web plate and the intermediate web plate.

[0014] Optionally, the connecting web plate intersects with the intermediate web plate.

[0015] Optionally, one end of the connecting web plate is connected to the end web plate, the other end of the connecting web plate away from the end web plate protrudes from the intermediate web plate along the extension direction of the connecting web plate.

[0016] Optionally, the one end of the connecting web plate does not protrude from the end web plate, the connecting web plate and the end web plate are configured as an integral molding; or

[0017] Both ends of the connecting web plate along the extension direction of the connecting web plate protrude from the end web plate and the intermediate web plate respectively.

[0018] The utility model discloses a second aspect provides a chassis, the chassis includes:

[0019] bottom end beam, the bottom end beam is arranged along the width direction of the chassis, both ends of the bottom end beam are connected with bottom corner fittings, the number of the bottom end beam is two, two bottom end beams are spaced along the length direction of the chassis;

[0020] According to the bottom side beam of the utility model first aspect, the number of the bottom side beam is two, two bottom side beams are connected to corresponding bottom corner fittings respectively, to form the closed frame structure with the bottom end beam;And

[0021] A support assembly connected to the inner periphery of the frame structure, the support assembly being used to support goods;

[0022] In particular, along the width direction of the bottom side beam, the end web is closer to the middle of the base frame than the middle web.

[0023] A third aspect of this utility model provides a folding case, the folding case comprising:

[0024] End frame; and

[0025] A base frame, the base frame including the bottom side beams according to the first aspect of the present invention;

[0026] The end frame is located on the outside of the base frame, and the end frame is pivotally connected to the base frame between the folded position and the unfolded position about an axis extending along the width direction of the folding box.

[0027] Along the width direction of the bottom side beam, the end web is closer to the center of the folding box than the middle web.

[0028] Optionally, the folding case further includes an elastic support member disposed between the base frame and the end frame. The two ends of the elastic support member are respectively connected to the base frame and the end frame. The elastic support member is used to support the end frame during the pivoting process of the end frame between the folded position and the unfolded position.

[0029] Optionally, the web further includes a connecting web disposed between the end web and the intermediate web, and the connecting web is connected to the end web and the intermediate web.

[0030] The connecting web, the end web, the upper wing plate, the lower wing plate, and the end frame enclose a receiving space with an opening facing the outside of the folding box, and the elastic support member is disposed in the receiving space.

[0031] Optionally, the elastic support member is constructed as a leaf spring or a spring.

[0032] According to the present invention, the upper flange protrudes beyond the web along the width direction of the bottom side beam by a more suitable length, which improves the overall structural strength and stability of the bottom side beam, thereby reducing the number of reinforcing ribs required at the bottom side beam. Attached Figure Description

[0033] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0034] Figure 1 This is a three-dimensional schematic diagram of a folding box according to a preferred embodiment of the present invention;

[0035] Figure 2 for Figure 1 The diagram shows a partial structural representation of the folding case, illustrating the connection between the base frame and the end frame.

[0036] Figure 3 for Figure 2 A partial schematic diagram of the bottom side beam in the base frame shown;

[0037] Figure 4 For along Figure 3 The sectional view cut by line AA in the middle;

[0038] Figure 5 This is a partial structural schematic diagram of a folding box according to another preferred embodiment of the present invention, showing the connection between the base frame and the end frame; and

[0039] Figure 6 For along Figure 5 The sectional view cut by line BB in the middle.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100 / 200 Folding Case

[0042] 110 / 210 base frame

[0043] 120 bottom beam

[0044] 121 Bottom corner piece

[0045] 130 / 230 Bottom Side Beam

[0046] 131 Upper Wing

[0047] 132 Lower Wing

[0048] 133 / 233 Web

[0049] 134 End web

[0050] 135 Intermediate Web

[0051] 136 / 236 connecting web

[0052] 137 Reinforcing Rib Plate

[0053] 138 Forklift Slot

[0054] 140 Support Components

[0055] 150 end frame

[0056] 160 / 260 Elastic Support

[0057] 170 hinge

[0058] 180 cubic meters of space

[0059] DL length direction

[0060] DW Width Direction

[0061] DH height direction Detailed Implementation

[0062] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0063] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0064] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0065] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0066] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0067] This utility model provides a bottom side beam.

[0068] First Implementation Method

[0069] Please see Figures 1 to 4 The bottom side beam 130 includes an upper flange 131, a lower flange 132, and a web 133. Specifically, the upper flange 131 is disposed along the length direction DL of the bottom side beam 130. The lower flange 132 is disposed along the length direction DL of the bottom side beam 130 and is located below the upper flange 131. The web 133 is disposed between the upper flange 131 and the lower flange 132, and the web 133 is connected to the upper flange 131 and the lower flange 132. Further, the web 133 includes end webs 134 and at least one intermediate web 135. The end webs 134 are arranged in pairs, and the two end webs 134 are spaced apart along the length direction DL of the bottom side beam 130. The intermediate web 135 is disposed between the two end webs 134. It should be noted that the end webs 134 and the intermediate webs 135 are staggered along the width direction DW of the bottom side beam 130.

[0070] According to this scheme, the length of the upper flange 131 protruding from the web 133 along the width direction DW of the bottom side beam 130 is more suitable, which improves the overall structural strength and stability of the bottom side beam 130, thereby reducing the number of reinforcing ribs required at the bottom side beam 130.

[0071] Please continue reading. Figures 1 to 4 Preferably, both the end web 134 and the intermediate web 135 are arranged along the length direction DL of the bottom side beam 130. That is, the end web 134 and the intermediate web 135 are arranged in parallel. Furthermore, along the width direction DW of the bottom side beam 130, the intermediate web 135 is located at the middle of the upper flange 131 and / or the lower flange 132. For example, the intermediate web 135 is located at the middle of the upper flange 131 and the lower flange 132. Further, the web 133 also includes a connecting web 136, which is disposed between the end web 134 and the intermediate web 135, and connects to both the end web 134 and the intermediate web 135. Specifically, please refer to... Figure 3 and Figure 4 One end of the connecting web 136 is connected to the end web 134, and the other end of the connecting web 136, away from the end web 134, protrudes from the intermediate web 135 along the extending direction of the connecting web 136. Preferably, the end of the connecting web 136 connected to the end web 134 does not protrude from the end web 134, and the connecting web 136 and the end web 134 are integrally formed to reduce the processing difficulty of the web 133. For example... Figure 4 In the middle section, the end web 134 and the connecting web 136 are integrally formed bent parts. The connecting web 136 intersects with the intermediate web 135; preferably, the connecting web 136 and the intermediate web 135 are constructed to be perpendicular or substantially perpendicular (see...). Figure 4 ).

[0072] Second Implementation Method

[0073] Please see now Figure 5 and Figure 6 This embodiment provides a bottom side beam 230, which includes an upper flange 131, a lower flange 132, and a web 233. The web 233 includes an end web 134, a middle web 135, and a connecting web 236. Compared to the bottom side beam 130 of the first embodiment, the difference is that the two ends of the connecting web 236 protrude from the end web 134 and the middle web 135 respectively along the extending direction of the connecting web 236 (see...). Figure 6 ).

[0074] This utility model also provides a base frame.

[0075] Please see Figure 1 and Figure 2 The base frame 110 includes a bottom end beam 120, bottom side beams 130, and a support assembly 140. Specifically, the bottom end beam 120 is arranged along the width direction DW of the base frame 110, and both ends of the bottom end beam 120 are connected to bottom corner pieces 121. There are two bottom end beams 120, which are spaced apart along the length direction DL of the base frame 110. It is understood that there are also two bottom side beams 130, which are respectively connected to corresponding bottom corner pieces 121 to form a closed frame structure with the aforementioned bottom end beams 120. The support assembly 140 is connected to the inner periphery of this frame structure and is used to support goods. The support assembly 140 includes, for example, a bottom crossbeam, a bottom longitudinal beam, and a floor. The bottom crossbeam is arranged along the width direction DW of the base frame 110, and the bottom longitudinal beam is arranged along the length direction DL of the base frame 110. The floor is laid on the upper surface of the bottom crossbeam and the bottom longitudinal beam to support goods. It should be noted that, along the width direction DW of the bottom side beam 130, the aforementioned end web 134 is closer to the center of the base frame 110 than the intermediate web 135. Alternatively, Figure 5 and Figure 6 A base frame 210 is provided, which includes the bottom side beam 230 of the aforementioned second embodiment.

[0076] It is understood that the aforementioned base frame 110 (or base frame 210) can be used for containers. That is, a container includes a body and the aforementioned base frame, with the body connected to the base frame. Preferably, the container is constructed as a collapsible container. A collapsible container is a type of cargo container design that can be folded and stored. Its core feature is that the container body can be folded or disassembled through mechanical structures such as hinges and sliding rails, thereby significantly reducing the space occupied when unused and improving transportation and storage efficiency. Please refer to [link / reference]. Figure 1The folding case 100 includes an end frame 150 and a base frame 110. The base frame 110 includes the aforementioned bottom side beam 130. The end frame 150 is located outside the base frame 110 and is pivotally connected to the base frame 110 between a folded position and an unfolded position about an axis extending along the width direction of the folding case 100. It is understood that the end frame 150 is preferably pivotally linked to the base frame 110 via a hinge 170.

[0077] Please see Figures 1 to 4 Preferably, along the width direction DW of the bottom side beam 130, the end web 134 is closer to the middle of the folding box 100 than the middle web 135. Figure 1 In the frame 110, there is one intermediate web plate 135, which is positioned between two paired end web plates 134. The base frame 110 also includes multiple reinforcing ribs 137, which are connected to the upper wing plate 131, lower wing plate 132, and intermediate web plate 135. The reinforcing ribs 137 are located on the side of the intermediate web plate 135 along the width direction DW of the bottom side beam 130, away from the center of the folding box 100. The multiple reinforcing ribs 137 are spaced apart along the length direction DL of the bottom side beam 130. A fork slot 138 is also provided at the base frame 110, located at the intermediate web plate 135.

[0078] Please see Figure 1 and Figure 2 The folding case 100 also includes an elastic support 160, which is disposed between the base frame 110 and the end frame 150. Both ends of the elastic support 160 are connected to the base frame 110 and the end frame 150, respectively. The elastic support 160 supports the end frame 150 during pivoting between the folded and unfolded positions. In this embodiment, the elastic support 160 is constructed as a leaf spring. Specifically, when the end frame 150 pivots from the folded position to the unfolded position, the elastic support 160 provides support force to the end frame 150; when the end frame 150 pivots from the unfolded position to the folded position, the elastic support 160 provides cushioning. That is, the elastic support 160 can provide support or cushioning force when the end frame 150 is unfolded or folded, facilitating the operator's unfolding or folding operation of the end frame 150.

[0079] Please continue reading. Figures 1 to 4It should be noted that the aforementioned connecting web 136, end web 134, upper wing 131, lower wing 132, and end frame 150 together enclose a receiving space 180 with an opening facing the outside of the folding box 100, and the elastic support 160 is disposed in this receiving space 180. Since the end web 134 is closer to the center of the folding box 100 along the width direction DW of the bottom side beam 130 than the middle web 135, this arrangement provides sufficient installation space for the elastic support 160 while ensuring the overall stability of the bottom side beam 130. Furthermore, the middle web 135 is not affected by the elastic support 160 at the end position of the bottom side beam 130, and is preferably disposed in the middle position of the upper wing 131 and / or the lower wing 132, so that the upper wing 131 extends appropriately beyond the web 133 along the width direction DW of the bottom side beam 130, thereby improving the overall strength and stability of the bottom side beam 130 and reducing the number of reinforcing ribs 137.

[0080] Alternatively, Figure 5 and Figure 6 A folding case 200 is provided, which includes an end frame 150 and the aforementioned base frame 210. An elastic support member 260 is provided between the base frame 210 and the end frame 150. In this embodiment, the elastic support member 260 is constructed as a spring.

[0081] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0082] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A bottom side beam, characterized in that, The bottom side beam includes: Upper wing plate, the upper wing plate being arranged along the length direction of the bottom side beam; A lower wing plate, the lower wing plate being disposed along the length direction of the bottom side beam and located below the upper wing plate; and A web plate, which is disposed between the upper wing plate and the lower wing plate, and is connected to the upper wing plate and the lower wing plate; The web includes end webs and at least one intermediate web. The end webs are arranged in pairs, with the two end webs spaced apart along the length of the bottom side beam. The intermediate web is disposed between the two end webs. Wherein, along the width direction of the bottom side beam, the end web plate is staggered from the middle web plate.

2. The bottom side beam according to claim 1, characterized in that, Both the end web and the intermediate web are arranged along the length direction of the bottom side beam.

3. The bottom side beam according to claim 1, characterized in that, Along the width direction of the bottom side beam, the intermediate web is located at the middle of the upper flange and / or the lower flange.

4. The bottom side beam according to claim 1, characterized in that, The web also includes a connecting web, which is disposed between the end web and the intermediate web and is connected to the end web and the intermediate web.

5. The bottom side beam according to claim 4, characterized in that, The connecting web intersects with the intermediate web.

6. The bottom side beam according to claim 4, characterized in that, One end of the connecting web is connected to the end web, and the other end of the connecting web away from the end web protrudes out of the intermediate web along the extending direction of the connecting web.

7. The bottom side beam according to claim 6, characterized in that, One end of the connecting web does not protrude from the end web, and the connecting web and the end web are integrally formed; or The two ends of the connecting web protrude from the end web and the intermediate web, respectively, along the extension direction of the connecting web.

8. A base frame, characterized in that, The base frame includes: Bottom end beams are provided along the width direction of the base frame. Both ends of the bottom end beams are connected to bottom corner pieces. There are two bottom end beams, and the two bottom end beams are spaced apart along the length direction of the base frame. According to any one of claims 1 to 7, the number of bottom side beams is two, and the two bottom side beams are respectively connected to the corresponding bottom corner pieces to form a closed frame structure with the bottom end beams; and A support assembly connected to the inner periphery of the frame structure, the support assembly being used to support goods; In particular, along the width direction of the bottom side beam, the end web is closer to the middle of the base frame than the middle web.

9. A folding case, characterized in that, The folding case includes: End frame; and The base frame includes a bottom side beam according to any one of claims 1 to 7; The end frame is located on the outside of the base frame, and the end frame is pivotally connected to the base frame between the folded position and the unfolded position about an axis extending along the width direction of the folding box. Along the width direction of the bottom side beam, the end web is closer to the center of the folding box than the middle web.

10. The folding case according to claim 9, characterized in that, The folding case also includes an elastic support member disposed between the base frame and the end frame. The two ends of the elastic support member are respectively connected to the base frame and the end frame. The elastic support member is used to support the end frame during the pivoting process of the end frame between the folded position and the unfolded position.

11. The folding case according to claim 10, characterized in that, The web further includes a connecting web, which is disposed between the end web and the intermediate web, and is connected to the end web and the intermediate web. The connecting web, the end web, the upper wing plate, the lower wing plate, and the end frame together form an accommodating space with an opening facing the outside of the folding box, and the elastic support is disposed in the accommodating space.

12. The folding case according to claim 10, characterized in that, The elastic support component is constructed as a leaf spring or a spring.

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