Hidden ladder box and vehicle

Abstract

The utility model discloses a hidden ladder box and a vehicle. According to the scheme, the hidden ladder box comprises a bottom plate; the cover plates are sequentially arranged on one side plate face of the bottom plate in the first direction, the length direction of the cover plates extends in the second direction, each cover plate comprises a supporting part and connecting parts arranged on the two opposite sides of the supporting part, each supporting part is provided with an opening facing the bottom plate, and the supporting parts and the bottom plate jointly define a containing space used for containing the hidden ladder body; the containing space extends and penetrates in the second direction, the two connecting parts are arranged on the two opposite sides of the opening, the connecting parts extend in the direction opposite to the bottom plate in the first direction, the connecting parts are attached to and welded to the bottom plate, and the welding positions of the connecting parts and the bottom plate are spaced from the supporting parts in the first direction. And meanwhile, the welding position of the connecting part and the bottom plate can be located outside the storage space, welding slag can be prevented from being formed in the storage space, and the drawing smoothness of the hidden ladder body is improved.

Description

Technical Field

[0001] This application relates to the field of concealed ladder boxes, and more particularly to a concealed ladder box and a vehicle. Background Technology

[0002] The concealed ladder box is a key component of the concealed ladder in the side door of a refrigerated truck, used to store the ladder. Existing concealed ladder boxes typically consist of a base plate, square tubes, and a cover plate. Generally, multiple longitudinal square tubes are welded to the base plate at transverse intervals. Then, the cover plate is placed over the square tubes, and its transverse sides are welded to the base plate. The square tubes are supported between the base plate and the cover plate, allowing the concealed ladder to be pulled out and moved within the space formed by the cover plate, base plate, and adjacent square tubes. However, the above-described concealed ladder boxes have the following disadvantages:

[0003] 1. When welding square tubes to the base plate, welding slag is easily formed around the upper surface of the base plate. If it is not cleaned in time or not cleaned thoroughly, it will be difficult to pull the hidden ladder out of the box.

[0004] 2. Because the base plate and square tube are welded first, and then the cover plate is put on, the square tube and cover plate cannot be directly fixed inside. This causes the square tube and cover plate to easily deform and shift when heated during the overall hot-dip galvanizing surface treatment of the concealed ladder box, resulting in dimensional tolerances. This makes it difficult to pull out the concealed ladder and affects the customer's use. Utility Model Content

[0005] To address the aforementioned issues, this application provides a concealed ladder box and vehicle.

[0006] According to one aspect of the embodiments of this application, a concealed ladder box is disclosed, including a base plate;

[0007] Multiple cover plates are sequentially arranged on one side of the base plate along a first direction. The length direction of each cover plate extends along a second direction. Each cover plate includes a support portion and connecting portions arranged on opposite sides of the support portion. The support portion has an opening facing the base plate. The support portion and the base plate together enclose a storage space for storing a hidden ladder body. The storage space extends through the second direction. Two connecting portions are arranged on opposite sides of the opening. The connecting portions extend in the first direction away from the base plate. The connecting portions are attached to and welded to the base plate. The welding position of the connecting portions to the base plate is spaced apart from that of the support portion along the first direction.

[0008] In one exemplary embodiment, the connecting portion includes a plurality of protrusions spaced apart along the second direction, and a notch is formed between adjacent protrusions on a connecting portion. In any two adjacent cover plates, a notch of one cover plate is used to accommodate a protrusion of the other cover plate, such that the plurality of protrusions on two adjacent connecting portions are staggered.

[0009] In one exemplary embodiment, there is an installation gap between the notch and the opposite side of the protrusion that is accommodated therein; the installation gap is 3mm to 5mm.

[0010] In one exemplary embodiment, the width of the connecting portion along the first direction is 20 to 25 mm.

[0011] In one exemplary embodiment, a plurality of positioning lines are spaced apart on the surface of the base plate along a first direction, and the outer side of the connecting portion of each cover plate away from the support portion is aligned with one of the positioning lines.

[0012] In one exemplary embodiment, the connecting part is provided with a plurality of plug-weld through holes, and the connecting part is plug-welded to the base plate through the plug-weld through holes;

[0013] The plurality of plug-weld through holes on the connecting part are spaced apart along the second direction.

[0014] In one exemplary embodiment, in the two cover plates at both ends along the first direction, the connecting portions on opposite sides of the two cover plates extend continuously along the second direction and are intermittently welded to the base plate along the second direction.

[0015] In one exemplary embodiment, the cover plate is integrally formed; and / or

[0016] The connecting part and the supporting part have a rounded transition.

[0017] According to another aspect of the embodiments of this application, a vehicle is disclosed, including: a vehicle body;

[0018] The aforementioned hidden ladder box is installed inside the vehicle body, and one axial end of the storage space is connected to the outside.

[0019] The elevator body is concealed and stored within multiple storage spaces, and can be moved along the storage spaces in a second direction to be pulled out of the vehicle body.

[0020] The technical solutions provided by the embodiments of this application have at least the following beneficial effects:

[0021] The concealed ladder box disclosed in this application includes multiple cover plates arranged sequentially on a base plate along a first direction. A storage space is formed between the support part of a single cover plate and the base plate. The single cover plate is welded to the base plate by two connecting parts connected to opposite sides of the support part, thereby fixing the cover plate. The concealed ladder body can be pulled out and moved along a second direction within the storage space formed between the support part and the base plate.

[0022] The welding position of the connecting part and the base plate in this application is spaced apart from the support part. The welding process of the connecting part and the base plate has little impact on the structure of the support part, and can also reduce the situation where the storage space is deformed due to heat deformation of the support part, thereby improving the smoothness of the pull-out of the hidden ladder body. At the same time, since the connecting part extends in the direction away from the base plate along the first direction, the welding position of the connecting part and the base plate can be located outside the storage space, which can avoid the formation of welding slag in the storage space and reduce the difficulty of pulling out the hidden ladder body in the storage space.

[0023] Furthermore, this application improves the cover plate structure by forming a zigzag structure with the support part of the cover plate and the two connecting parts connected to the opposite sides of the support part, thereby increasing the support strength of the cover plate. This allows a single cover plate to be supported on the base plate to form a storage space without the need to introduce a square tube structure.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0026] Figure 1 A schematic diagram of the composition of a concealed ladder box provided by existing technology.

[0027] Figure 2 This is a structural diagram of a hidden ladder box provided in an embodiment of this application.

[0028] Figure 3 This is a structural diagram of a plurality of cover plates provided in an embodiment of this application.

[0029] Figure 4 This is a structural diagram of a hidden ladder box provided in an embodiment of this application.

[0030] Figure 5 for Figure 4 A magnified view of a portion of area A in the middle.

[0031] Figure 6 This is a partial structural diagram of a vehicle provided in an embodiment of this application.

[0032] The reference numerals in the attached drawings are explained as follows: 1-Hidden ladder box, 102-Square tube, 101 / 11-Base plate, 111-Positioning line, 103 / 12-Cover plate, 121-Support part, 1211-First support plate, 1212-Second support plate, 122-Storage space, 123-Connecting part, 1231-Protrusion, 1232-Notch, 1233-Installation gap, 1234-Plug-in through hole, 2-Car body, 3-Hidden ladder body. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this application will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0034] In the description of this utility model, all connection relationships mentioned do not refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0038] Figure 1 A structural diagram of the existing concealed ladder box 1 is shown. (Refer to...) Figure 1 The existing concealed ladder box 1 can be installed on the vehicle body 2. The concealed ladder box 1 has a base plate 101, square tubes 102, and a cover plate 103. Multiple square tubes 102 are welded to the base plate 101 at intervals. The cover plate 103 covers the multiple square tubes 102, and the two lateral sides of the cover plate 103 are welded and fixed to the base plate 101. The square tubes 102 are supported between the base plate 101 and the cover plate 103. The concealed ladder can be pulled out and moved within the space formed between the cover plate 103, the base plate 101, and two adjacent square tubes 102. However, the process of welding the square tubes 102 to the base plate 101 can easily leave welding slag on the base plate 101. In addition, the cover plate 103 is only placed on the square tubes 102. When the concealed ladder box 1 is surface treated, the square tubes 102 and the cover plate 103 are prone to heat deformation and misalignment, both of which will make it difficult to pull out the concealed ladder.

[0039] Figure 2 A structural diagram of a hidden ladder box 1 according to an embodiment of this application is shown.

[0040] Reference Figure 2 The concealed ladder box 1 of this application includes a base plate 11 and multiple cover plates 12.

[0041] Multiple cover plates 12 are sequentially disposed on one side of the base plate 11 along a first direction, and the length direction of the cover plates 12 extends along a second direction. In specific implementation, the first direction and the second direction can be two mutually perpendicular directions in the horizontal plane. In fact, the first direction can be transverse and the second direction can be longitudinal. In addition, the first direction and the second direction can also be two directions with an included angle in the horizontal plane, or the first direction and the second direction can be two directions with an included angle in a plane other than the horizontal plane, etc.

[0042] The cover plate 12 includes a support portion 121 and connecting portions 123 arranged on opposite sides of the support portion 121. The support portion 121 has an opening facing the base plate 11. The support portion 121 and the base plate 11 together enclose a storage space 122 for storing the hidden ladder body 3. The storage space 122 extends through the ladder body 3 in a second direction. The hidden ladder body 3 can be pulled out and moved along the second direction within the storage space 122 formed between the support portion 121 and the base plate 11.

[0043] Two connecting parts 123 are located on opposite sides of the opening. The connecting parts 123 extend in the first direction away from the base plate 11 and are attached and welded to the base plate 11. A single cover plate 12 is welded to the base plate 11 by two connecting parts 123 connected to opposite sides of the support part 121, thus fixing the cover plate 12.

[0044] The welding position of the connecting part 123 to the base plate 11 is spaced apart from the support part 121 along the first direction. In this application, the welding position of the connecting part 123 to the base plate 11 is spaced apart from the support part 121. The welding process of the connecting part 123 to the base plate 11 has little impact on the structure of the support part 121, and can also reduce the possibility of deformation of the storage space 122 due to heat deformation of the support part 121, thereby improving the smoothness of the pull-out of the hidden ladder body 3. At the same time, since the connecting part 123 extends in the direction away from the base plate 11 along the first direction, the welding position of the connecting part 123 to the base plate 11 can be located outside the storage space 122, which can avoid the formation of weld slag in the storage space 122 and reduce the difficulty of pulling out the hidden ladder body 3 in the storage space 122.

[0045] Furthermore, by improving the structure of the cover plate 12, this application forms a zigzag structure with the support portion 121 of the cover plate 12 and the two connecting portions 123 connected to the opposite sides of the support portion 121, thereby increasing the support strength of the cover plate 12. This allows a single cover plate 12 to be supported on the base plate 11 to form a storage space 122 without the need to introduce the square tube 102 structure.

[0046] Specifically, the support portion 121 includes a first support plate 1211 and two second support plates 1212. The first support plate 1211 and the base plate 11 are positioned opposite each other and spaced apart. The first support plate 1211 extends along a second direction, and the two second support plates 1212 are positioned on two sides of the first support plate 1211 along a first direction. The second support plates 1212 extend from the sides of the first support plate 1211 toward the base plate 11, forming a through-type groove structure between the first support plate 1211 and the two second support plates 1212. The opening of this groove structure faces the base plate 11. The first support plate 1211, the two second support plates 1212, and the base plate 11 enclose a storage space 122.

[0047] The groove structure formed between the first support plate 1211 and the two second support plates 1212 is shaped to match the shape of the hidden ladder body 3, ensuring that the hidden ladder body 3 can be stably stored within the storage space 122. In this embodiment, the first support plate 1211 and the second support plate 1212 are perpendicular to each other and transition with an arc, which improves the structural strength of the support part 121 and reduces frictional damage to the hidden ladder body 3.

[0048] The support part 121 can be integrally formed, such as by bending to form a first support plate 1211 and two second support plates 1212, which reduces the generation of welding slag and reduces the deformation of the support part 121 caused by the welding heating process.

[0049] The connecting part 123 of this application can be a plate-like structure, which can be fitted with the base plate 11 through contact with the plate surface.

[0050] The connecting portion 123 fits against the base plate 11 and extends away from the support portion 121, causing the cover plate 12 to form a U-shaped structure. The connection portion 123 facilitates the cover plate 12 to be fixed to the base plate 11 by welding, ensuring the stability of the storage space 122. In this embodiment, the side of the support portion 121 connects to the side of the connecting portion 123. Specifically, one side of the connecting portion 123 connects to the side of the second support plate 1212 away from the first support plate 1211. In addition, in some other embodiments, the side of the support portion 121 may also connect to the plate surface of the connecting portion 123. As long as the part of the connecting portion 123 outside the storage space 122 is welded to the base plate 11, weld slag is avoided from forming in the storage space 122, which would affect the practicality of the hidden ladder body 3.

[0051] Furthermore, the cover plate 12 is integrally formed, reducing the generation of welding slag and the deformation of the cover plate 12 caused by welding heating. Specifically, the connecting part 123 and the supporting part 121 can be an integrally formed structure, with the connecting part 123 formed by bending outward from the bottom edges on both sides of the supporting part 121.

[0052] Furthermore, the connecting part 123 and the supporting part 121 have a rounded transition, which improves the connection structure strength between the connecting part 123 and the supporting part 121 and reduces frictional damage to the hidden ladder body 3.

[0053] Figure 3 A structural diagram of multiple cover plates 12 is shown. Figure 4 A structural diagram of a hidden ladder box 1 in one embodiment is shown.

[0054] Reference Figure 3 and Figure 4 The connecting part 123 is provided with multiple plug welding through holes 1234, and the connecting part 123 is plug welded to the base plate 11 through the plug welding through holes 1234. The plug welding through holes 1234 on the connecting part 123 make it easy for workers to weld the connecting part 123 to the base plate 11 by plug welding, and also ensure that the welding slag can be formed outside the receiving space, reducing the need for the hidden ladder body 3 to be pulled out and used in the receiving space.

[0055] Specifically, multiple plug-weld through holes 1234 on the connecting part 123 are spaced apart along the second direction. Multiple weld points are provided between the connecting part 123 and the base plate 11 along the length direction of the accommodating space, which can improve the welding stability between the connecting part 123 and the base plate 11.

[0056] In addition, in some embodiments, the edge of the connecting portion 123 away from the support portion 121 is welded to the base plate 11, which also ensures that the weld slag can be formed outside the accommodating space.

[0057] Furthermore, the width of the connecting portion 123 along the first direction is 20-25 mm. This ensures sufficient contact area between the connecting portion 123 and the base plate 11, guaranteeing the structural stability of the cover plate 12, and also facilitates welding the connecting portion 123 onto the base plate 11. Additionally, the connecting portion 123 has sufficient width in the first direction to allow it to be bent. In this embodiment, the width of the connecting portion 123 along the first direction can be set to 24 mm.

[0058] Combination Figures 2 to 4The connecting portion 123 includes a plurality of protrusions 1231 spaced apart along the second direction. There is a gap 1232 between two adjacent protrusions 1231 on a connecting portion 123. In any two adjacent cover plates 12, a gap 1232 of one cover plate 12 is used to accommodate a protrusion 1231 of the other cover plate 12, so that the plurality of protrusions 1231 on two adjacent connecting portions 123 are staggered.

[0059] Specifically, the protrusion 1231 of the connecting part 123 has a plate-like structure and fits against the surface of the base plate 11. The protrusions 1231 between two adjacent cover plates 12 along the first direction are staggered, so that the two connecting parts 123 between two adjacent cover plates 12 can be located on the same straight line along the second direction. While keeping the internal dimensions of the entire hidden ladder box 1 unchanged, this not only ensures that the width of the connecting parts 123 of each cover plate 12 along the first direction can be designed to be larger, thereby increasing the strength of the cover plate 12, but also does not increase the space occupied by the connecting parts 123. In addition, the staggered arrangement of the protrusions 1231 between adjacent connecting parts 123 can also improve the utilization rate of raw materials.

[0060] Each protrusion 1231 is provided with at least one plug-weld through hole 1234 so that each protrusion 1231 can be plug-welded to the base plate 11, thereby improving the connection stability between the connecting part 123 and the base plate 11.

[0061] In some other embodiments, the connecting portion 123 may also extend continuously along the side of the cover plate 12 in a second direction.

[0062] Specifically, in the two cover plates 12 located at both ends along the first direction, the connecting portions 123 on opposite sides of the two cover plates 12 extend continuously along the second direction and are intermittently welded to the base plate 11 along the second direction. This improves the aesthetics of the side cover plates 12. The connecting portions 123 located between two adjacent cover plates 12 are connected to the base plate 11 by interlocking multiple protrusions 1231.

[0063] To facilitate the installation of multiple cover plates 12 and reduce installation difficulties caused by processing errors, there is an installation gap 1233 between the notch 1232 and the opposite side of the protrusion 1231 that is accommodated therein.

[0064] Specifically, the protrusion 1231 has two sides arranged along the second direction and a side away from the support portion 121. In some embodiments, the notch 1232 is formed by the sides of two adjacent protrusions 1231 spaced apart along the second direction and the side of the support portion 121 near the base plate 11, and the three sides of the notch 1232 correspond one-to-one with the three sides of the protrusions 1231 embedded therein, with each corresponding side having a mounting gap 1233. In other embodiments, the notch 1232 is formed by the side of the protrusion 1231 located at the far end along the second direction and the side of the support portion 121 near the base plate 11, and the two sides forming the notch 1232 correspond one-to-one with the two sides of the protrusions 1231 embedded therein, and have a mounting gap 1233.

[0065] Furthermore, the installation gap 1233 is 3mm to 5mm. This reduces installation difficulties caused by machining errors, while maintaining a tight gap between adjacent cover plates 12 and reducing space occupation.

[0066] Figure 5 It shows Figure 4 A magnified view of a portion of area A in the middle.

[0067] Reference Figure 4 and Figure 5 On the surface of the base plate 11, a plurality of positioning lines 111 are spaced apart along the first direction, and the outer side of the connecting part 123 of each cover plate 12 away from the support part 121 is aligned with a positioning line 111.

[0068] When installing the cover plate 12, align the connecting part 123 with the corresponding positioning line 111 to achieve rapid positioning of the cover plate 12 on the base plate 11, improve production efficiency, and ensure that multiple cover plates 12 have a definite installation position on the base plate 11, which facilitates production quality control.

[0069] Specifically, the multiple protrusions 1231 on each cover plate 12 are aligned on the same straight line in the second direction away from the outer edge of the support member, and the outer edge of the protrusions 1231 on each cover plate 12 away from the support member can be aligned with a positioning line 111. In addition, the positioning line 111 can be formed on the surface of the base plate 11 by laser marking, or by engraving, drawing, or other methods.

[0070] Figure 6 A partial structural diagram of a vehicle is shown.

[0071] Reference Figure 6This application also provides a vehicle, which includes a vehicle body 2, the aforementioned hidden ladder box 1, and a hidden ladder body 3. The hidden ladder box 1 is disposed inside the vehicle body 2, and one axial end of the storage space 122 is open to the outside. The hidden ladder body 3 is stored in multiple storage spaces 122 and can be moved along the storage spaces 122 in a second direction to be pulled out of the vehicle body 2. One end of the storage space 122 of the hidden ladder box 1 is open to the outside, allowing the hidden ladder body 3 to be pulled out of the vehicle body 2 from within the storage space 122. One or both of the base plate 11 and the cover plate 12 can be fixedly connected to the vehicle body 2, thus fixing the hidden ladder box 1 inside the vehicle body 2. The vehicle can be a refrigerated truck, a freight truck, etc.

[0072] This application reduces the formation of welding slag within the movement range of the concealed ladder body 3 by setting the welding position of the cover plate 12 to the base plate 11 outside the storage space 122. Furthermore, it reduces the heat deformation of the cover plate 12 during welding and fixing to the base plate 11 and during surface treatment, thereby reducing the deformation of the storage space 122 and improving the smoothness of the pull-out of the concealed ladder body 3.

[0073] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A concealed hatchway, characterized by include: Base plate; Multiple cover plates are sequentially arranged on one side of the base plate along a first direction. The length direction of each cover plate extends along a second direction. Each cover plate includes a support portion and connecting portions arranged on opposite sides of the support portion. The support portion has an opening facing the base plate. The support portion and the base plate together enclose a storage space for storing a hidden ladder body. The storage space extends through the second direction. Two connecting portions are arranged on opposite sides of the opening. The connecting portions extend in the first direction away from the base plate. The connecting portions are attached to and welded to the base plate. The welding position of the connecting portions to the base plate is spaced apart from that of the support portion along the first direction.

2. The concealed ladder box according to claim 1, characterized in that, The connecting portion includes a plurality of protrusions spaced apart along the second direction. A gap is formed between two adjacent protrusions on a connecting portion. In any two adjacent cover plates, a gap in one cover plate is used to accommodate a protrusion in the other cover plate, such that the plurality of protrusions on two adjacent connecting portions are staggered.

3. The concealed ladder box according to claim 2, characterized in that, There is an installation gap between the notch and the opposite side of the protrusion that is accommodated therein; the installation gap is 3mm to 5mm.

4. The concealed ladder box according to claim 1, characterized in that, The width of the connecting part along the first direction is 20-25 mm.

5. The concealed ladder box according to claim 1, characterized in that, The base plate has multiple positioning lines spaced apart along a first direction, and the outer side of the connecting part of each cover plate away from the support part is aligned with one of the positioning lines.

6. The concealed ladder box according to claim 1, characterized in that, The connecting part is provided with a plurality of plug welding through holes, and the connecting part is plug welded to the base plate through the plug welding through holes; The plurality of plug-weld through holes on the connecting part are spaced apart along the second direction.

7. The concealed ladder box according to claim 1, characterized in that, In the two cover plates at both ends along the first direction, the connecting portions on opposite sides of the two cover plates extend continuously along the second direction and are intermittently welded to the base plate along the second direction.

8. The concealed ladder box according to claim 1, characterized in that, The cover plate is integrally formed; and / or The connecting part and the supporting part have a rounded transition.

9. A vehicle characterized by comprising: include: Vehicle body; The hidden ladder box as described in any one of claims 1 to 8 is disposed inside the vehicle body, and one axial end opening of the storage space communicates with the outside. The elevator body is concealed and stored within multiple storage spaces, and can be moved along the storage spaces in a second direction to be pulled out of the vehicle body.

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