Packaging carrier frame for spring mattress and method for packaging and transporting spring mattress

Abstract

Provided are a packaging carrier frame (2) for a spring mattress (1) and a method for packaging and transporting the spring mattress (1), the packaging carrier frame (2) comprising two opposite transverse frames (21), two opposite longitudinal frames (22), and rollers (216), and the longitudinal frames (22) being inwardly foldable in half. The bottom of each transverse frame (21) is connected to a bottom surface support frame (211), and the bottom surface support frame (211) can rotate to form an included angle of 0°-90° with the transverse frame (21) connected thereto. When each bottom surface support frame (211) rotates to be perpendicular to the respective transverse frame (21), two ends of the bottom surface support frame (211) in the transverse direction are each engaged with one longitudinal frame (22) by means of engagement structures. Two ends of each transverse frame (21) are each rotatably connected to one end portion of the two longitudinal frames (22). The length of the transverse frames (21) in the transverse direction is greater than or equal to twice the length of the longitudinal frames (22) in the longitudinal direction. The rollers (216) are arranged at the bottoms of the transverse frames (21) or the longitudinal frames (22). Hence, the volume of a single package of the spring mattress (1) can be reduced, thus facilitating transportation and handling and saving labor costs. Moreover, damage to and deformation of the spring mattress (1) can be prevented.

Description

A packaging tray and packaging and transportation method for a spring mattress

[0001] Cross-reference to related applications

[0002] This application claims priority to and is based on Chinese Patent Application No. 2024111841165, filed with the China National Intellectual Property Administration on August 27, 2024, entitled "A Packaging Bracket and Packaging Method for a Spring Mattress," the contents of which are incorporated herein by reference. Technical Field

[0003] This invention belongs to the field of furniture transportation technology, specifically relating to a packaging bracket and packaging and transportation method for a spring mattress. Background Technology

[0004] Most existing spring mattresses are single-piece constructions, resulting in a large overall size and high costs for transportation and storage. In pursuit of mattress comfort, designs incorporate detachable and connectable elastic modules. This allows for adjustment of the springs in different areas of the mattress as needed, enabling varying firmness in different zones. Furthermore, the springs can be disassembled and transported separately.

[0005] Disassembling and shipping spring mattresses separately greatly improves the convenience of transporting them. However, there are still some problems with their transportation and handling. Even with separate packaging and transportation methods, there are still problems such as long assembly time, difficulty in disassembly and assembly, and difficulty in moving them, which affect their performance. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art and provide a packaging bracket and packaging and transportation method for spring mattresses, which can reduce the individual packaging volume of spring mattresses, facilitate transportation and handling, save labor costs, and prevent spring mattresses from being damaged or deformed.

[0007] The technical solution of the present invention is as follows:

[0008] A packaging tray for a spring mattress includes two opposing transverse frames, two opposing longitudinal frames, and rollers, the longitudinal frames being capable of folding inwards;

[0009] The bottom of the transverse frame is connected to a bottom support frame via a connecting rod. The bottom support frame can rotate relative to the connecting rod. When the bottom support frame rotates to be perpendicular to the transverse frame, both ends of the bottom support frame in the transverse direction are respectively connected to a longitudinal frame via a snap-fit ​​structure.

[0010] The two ends of the transverse frame are rotatably connected to one end of each of the two longitudinal frames. The length of the transverse frame in the transverse direction is greater than or equal to twice the length of the longitudinal frame in the longitudinal direction. Rollers are located at the ends of the bottom connecting rods of the transverse frame.

[0011] In some possible implementations, the main body of the link and the transverse frame are in the same vertical plane, and the end of the link away from the transverse frame forms an inwardly protruding pivot tube, with the bottom support frame rotatably connected to the pivot tube.

[0012] In some possible implementations, the length of the bottom support frame in the lateral direction is less than or equal to the distance between the two longitudinal frames.

[0013] In some possible implementations, the connection point between the bottom support frame and the connecting rod and the bottom support frame is higher than the bottom of the longitudinal frame in the height direction. When the bottom support frame is parallel to the transverse frame and the longitudinal frame is folded inward, the bottom support frame and the longitudinal frame do not interfere with each other.

[0014] In some possible implementations, the transverse frame is connected to the bottom support frame by two linkages.

[0015] In some possible implementations, the snap-fit ​​structure includes snap-fit ​​pieces at both ends of the bottom support frame in the transverse direction and snap-fit ​​protrusions protruding upward from corresponding positions in the longitudinal frame. The snap-fit ​​pieces protrude from the bottom support frame toward the longitudinal frame on the same side and have snap-fit ​​interfaces.

[0016] When the bottom support frame is perpendicular to the transverse frame, the snap-fit ​​piece abuts against the longitudinal frame and the snap-fit ​​protrusion snaps into the snap-fit ​​interface. The main bodies of the two bottom support frames are on the same horizontal plane under the support of the longitudinal frame.

[0017] In some possible implementations, the length of the bottom support frame in the longitudinal direction is less than or equal to half the length of the longitudinal frame in the longitudinal direction.

[0018] In some possible implementations, the bottom support frame forms two inwardly recessed clearance portions on the side near the transverse frame, and when the longitudinal frame is folded inward and the bottom support frame is parallel to the transverse frame, the locking protrusion is at least partially located below the clearance portions.

[0019] Among some possible implementations,

[0020] The transverse frame includes two side members, and the longitudinal frame includes an upper member, a lower member, and a side member. The upper member and the lower member are pivotally connected to the side member of the longitudinal frame on the same side.

[0021] The end of the upper rod away from the longitudinal frame extends downward and is pivotally connected to the side rod of the transverse frame; the end of the lower rod away from the longitudinal frame extends upward and is pivotally connected to the side rod of the transverse frame; the side rod of the longitudinal frame is pivotally connected to the side rod of the transverse frame on the same side.

[0022] In some possible implementations, the upper rod is two sections connected by a hinge, and the lower rod is two sections connected by another hinge. The hinge includes two opposing sleeves, the closed ends of which have upper and lower flat plates with a groove between them. The flat plates have through holes. One flat plate of each sleeve is inserted into the groove of the other sleeve, and a pin is inserted into the through hole to form the hinge.

[0023] The two sections of the upper rod are respectively fitted into a sleeve of the hinge, thus connecting the two upper rods;

[0024] The two sections of the lower rod are respectively fitted into a sleeve of the hinge, thus connecting the two lower rods.

[0025] In some possible implementations, the snap-fit ​​protrusion is located on the sleeve.

[0026] In some possible implementations, the rollers are positioned at the end of the connecting rod near the pivot tube, and the distance between two opposing rollers connected to different transverse frames is greater than the distance between the outer edges of the two transverse frames.

[0027] A method for packaging and transporting a spring mattress, the spring mattress comprising a detachable upper padding layer, an elastic module, and a bottom plate, the upper padding layer being a soft padding layer, the elastic module being formed by detachably connecting multiple spring units, and the bottom plate being formed by detachably splicing bottom plate units, the mattress being packaged by a packaging device, the packaging device comprising several independent packaging containers and the aforementioned packaging bracket;

[0028] The elastic module is housed in an individual packaging container and is locked in a compressed state along its elastic direction; the elastic module is housed in at least one individual packaging container, and the individual packaging containers are stacked in a packaging tray.

[0029] In some possible implementations, the upper padding is housed in a separate packaging container, and the bottom plate is housed in at least one separate packaging container.

[0030] In some possible implementations, the base plate is disassembled and stacked in an individual packaging container.

[0031] In some possible implementations, the upper padding layer is folded or rolled up and stored in an individual packaging container.

[0032] In some possible implementations, handle holes are provided on two opposite side walls of the individual packaging container.

[0033] In some possible implementations, the top surface of the individual packaging container is provided with a handle.

[0034] In some possible implementations, the packaging device also includes an integral packaging container, in which individual packaging containers are stacked and housed, and the integral packaging container is housed within a packaging tray.

[0035] The present invention has at least the following beneficial effects:

[0036] 1. The spring mattress packaging and transportation method and device provided by the present invention reduces the packaging volume by packaging the upper padding layer, the spring unit that makes up the elastic module, and the bottom plate unit that makes up the bottom plate into separate packaging containers and then stacking them for transportation. This saves space and manpower during manual handling and transportation, and prevents the components of the spring mattress from being damaged or deformed due to improper stacking.

[0037] 2. By stacking individual packaging containers on packaging pallets, merchants can easily transport goods or users can move them, saving labor costs. In some possible implementations, individual packaging containers are stacked and stored in a larger packaging container, which can fix the stacked individual packaging containers, making the stacking more secure. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the spring mattress in Example 1;

[0039] Figure 2 is a structural schematic diagram of the upper padding layer, elastic module and bottom plate of the spring mattress in Example 1. In order to illustrate the structure of the bottom plate, only part of the elastic module is shown.

[0040] Figure 3 is a schematic diagram of the elastic module in Example 1;

[0041] Figure 4 is a schematic diagram of the elastic module locked in a compressed state in Example 1;

[0042] Figure 5 is a schematic diagram of the base plate in Example 1;

[0043] Figure 6 is a schematic diagram of the base plate being divided into base plate units in Embodiment 1;

[0044] Figure 7 is a schematic diagram of the upper padding layer being wound and placed in the first packaging container in Example 1. In order to make the structural relationship between the upper padding layer and the first packaging container clearer, the handle hole on the first packaging container is omitted in Figure 7.

[0045] Figure 8 is a schematic diagram of the structure of the first packaging container in Example 1;

[0046] Figure 9 is a schematic diagram of the structure of the third packaging container in Example 1;

[0047] Figure 10 is a schematic diagram of the elastic module in Example 1 being disassembled into a group of multiple spring units, locked in a compressed state, and then placed in a second packaging container.

[0048] Figure 11 is a schematic diagram of the structure of the second packaging container in Example 1;

[0049] Figure 12 is a schematic diagram of multiple independent packaging containers stacked and stored in a packaging tray in Example 1;

[0050] Figure 13 is a bottom view of Figure 12;

[0051] Figure 14 is a schematic diagram of the two sets of packaging devices stacked in the height direction in Example 1;

[0052] Figure 15 is a schematic diagram of the packaging tray in the folded state in Example 1;

[0053] Figure 16 is a schematic diagram of the packaging tray in Example 1, wherein the bottom support frame is parallel to the transverse frame, and the longitudinal frame is between the open state and the folded state.

[0054] Figure 17 is a schematic diagram of the packaging tray in Example 1, wherein the bottom support frame is parallel to the transverse frame and the longitudinal frame is in the open state;

[0055] Figure 18 is a schematic diagram of the packaging tray in Example 1, wherein the plane of the bottom support frame and the plane of the connected transverse frame form an acute angle, and the longitudinal frame is in the open state.

[0056] Figure 19 is a schematic diagram of the packaging tray in Example 1, wherein the bottom support frame is perpendicular to the horizontal frame and is snapped to the vertical frame through a snap-fit ​​structure.

[0057] Figure 20 is an enlarged view of A in Figure 19;

[0058] Figure 21 is a schematic diagram of the stacking and storage of individual packaging containers in the packaging tray in Example 2. To illustrate the relationship between the individual packaging containers and the packaging tray, the overall packaging container is omitted in this figure.

[0059] Figure 22 is a schematic diagram of the overall packaging container being stored in the packaging tray in Example 2.

[0060] The reference numerals in the diagram are as follows: 1-Spring mattress; 11-Upper padding layer; 12-Elastic module; 121-Spring unit; 13-Bottom plate; 131-Bottom plate unit; 2-Packaging bracket; 21-Transverse frame; 211-Bottom support frame; 212-Allowing part; 213-Snap-fit ​​piece; 214-Connecting rod; 215-Pivot tube; 216-Roller; 22-Longitudinal frame; 221-Half frame; 222-Upper rod; 223-Lower rod; 224-Snap-fit ​​protrusion; 225-Side rod; 226-Hinge; 227-Sleeve; 228-Flat plate; 229-Through hole; 31-First packaging container; 32-Second packaging container; 33-Third packaging container; 34-Handle hole; 35-Handle; 4-Integral packaging container. Detailed Implementation

[0061] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0062] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0064] Example 1

[0065] This embodiment provides a packaging bracket 2 for a spring mattress 1, and a packaging and transportation method for using it to package and transport a detachable spring mattress 1. As shown in Figures 1 and 2, the detachable spring mattress 1 includes an upper padding layer 11, elastic modules 12, and a base plate 13, all of which are separable. The upper padding layer 11 is a soft padding layer. The elastic modules 12 are formed by detachably connecting multiple spring units 121, which can be compressed from the state shown in Figure 3 to the state shown in Figure 4, as shown in Figures 5 and 6. The base plate 13 is formed by detachably splicing base plate units 131. When shipping or when handling the mattress, the merchant can separate the spring mattress 1 into the upper padding layer 11, multiple spring units 121, and multiple base plate units 131 for packaging.

[0066] The packaging device for the spring mattress 1 in this embodiment includes multiple individual packaging containers and packaging trays 2. Specifically, the individual packaging containers include a first packaging container 31 for packaging the upper padding layer 11, a second packaging container 32 for packaging the spring unit 121, and a third packaging container 33 for packaging the base plate unit 131.

[0067] Since the upper padding layer 11 is a soft padding layer, it can be folded or rolled up and then placed into a first packaging container 31. In this embodiment, the first packaging container 31 is a long, narrow packaging box as shown in Figures 7 and 8. The upper padding layer 11 is rolled up and then placed into the long, narrow packaging box. As a simple alternative to this embodiment, the first packaging container 31 can also be a flat packaging box. The upper padding layer 11 is folded and then placed inside. The shape and size of the first packaging container 31 are specifically selected according to the volume and size of the upper padding layer 11, and are not particularly limited, as long as the purpose of the present invention can be achieved.

[0068] The base plate 13 is disassembled into base plate units 131 as shown in Figure 6 and then stacked and installed in the third packaging container 33 as shown in Figure 9. As a simple alternative to this embodiment, when the base plate 13 is made of flexible material, the base plate 13 can also be folded and packaged in two or fewer third packaging containers 33.

[0069] In order to accommodate more spring units 121 in the second packaging container 32 and save on transportation volume, in this embodiment, multiple arrayed spring units 121 are arranged as a module, and then disassembled on a module-by-module basis without splitting individual spring units 121. Then, as shown in Figures 10 and 11, the spring units 121 located in the same module are locked in a compressed state and stacked in the second packaging container 32.

[0070] As a simple alternative to this embodiment, the spring unit 121 can be disassembled individually, compressed to a locked state, and then stacked in the second packaging container 32. The spring units 121 are then stacked in the second packaging container 32 in an N1×N2×N3 configuration, where N1 is greater than or equal to 1, N2 is greater than or equal to 1, and N3 is greater than or equal to 1. Specifically, they can be stacked in a 1*10 configuration in a long, rectangular packaging box, or in multiple rows and columns such as 2*5 or 4*5 in a flat packaging box, or in multiple rows, columns, and groups such as 2*5*5 in a cubic packaging box.

[0071] Furthermore, as shown in Figures 8 and 9, the individual packaging containers have handle holes 34 on two opposite side walls for easy handling. Alternatively, as shown in Figure 11, handles 35 can be provided on the top (or side) of the individual packaging containers.

[0072] As shown in Figures 12 and 13, the packaged first packaging container 31, second packaging container 32, and third packaging container 33 are stacked on top of each other and then stored in the packaging tray 2. The packaging tray 2 can compactly fix the individual packaging containers and facilitate manual handling and transportation. The two packaging devices can be stacked in the height direction as shown in Figure 14.

[0073] As a simple alternative to this embodiment, the first packaging container 31, the second packaging container 32, and the third packaging container 33 can be freely combined and stacked on a single packaging tray 2. All three types of independent packaging containers can be stacked simultaneously, or any two or one of them can be selected for stacking.

[0074] The structure of the packaging tray 2 will be described in detail below with reference to Figures 15-19. The packaging tray 2 includes two opposing transverse frames 21, two opposing longitudinal frames 22, and rollers 216. The two ends of the transverse frames 21 are rotatably connected to the ends of the two longitudinal frames 22, respectively. The rollers 216 are connected to the bottom of the transverse frames 21 via connecting rods 214. Connecting rods 214 are pivotally connected to the bottom support frame 211. As shown in Figure 19, when the bottom support frame 211 rotates to be perpendicular to the transverse frames 21, both ends of the bottom support frame 211 in the transverse direction are respectively engaged with a longitudinal frame 22 via a snap-fit ​​structure. The length of the transverse frame 21 in the transverse direction is more than twice the length of the longitudinal frame 22 in the longitudinal direction. The rollers 216 are located at the bottom of either the transverse frame 21 or the longitudinal frame 22.

[0075] Specifically, the longitudinal frame 22 is not a complete quadrilateral, lacking a side section. The longitudinal frame 22 includes an upper rod 222, a lower rod 223, and a side rod 225. The upper rod 222 and lower rod 223 are pivotally connected to the side rod 225 on the same side. The end of the upper rod 222 furthest from the side rod extends downwards and pivotally connects to the side rod of the transverse frame 21. The end of the lower rod 223 furthest from the side rod extends upwards and pivotally connects to the side rod of the transverse frame 21. The lower rod 223 is in two sections and connected by a hinge 226. The upper rod 222, also in two sections, is connected by another hinge 226. The side rod of the longitudinal frame 22 is pivotally connected to the side rod of the transverse frame on the same side. The extensions of the upper rod 222 and the lower rod 223 at the other end are pivotally connected to the side rod of the transverse frame on the other side. This structure allows for smoother pivoting, as the two pivot points do not need to be perfectly synchronized. The structure is simpler and reduces the materials and costs required to manufacture the longitudinal frame 22. As shown in Figure 20, the hinge 226 includes two opposing sleeves 227, which are respectively fixed to the connecting ends of the lower rod 223 and the upper rod 222 of the two sections. The closed end of the sleeve 227 has two flat plates 228, one upper and one lower, with a groove between the flat plates 228. The upper and lower flat plates 228 are provided with through holes 229. One flat plate 228 of the two sleeves 227 is inserted into the groove of the other sleeve 227, and the pin is inserted into the through hole 229, thus forming the hinge 226. The upper rod 222 and the lower rod 223 are unfolded or folded through the hinge 226, thereby realizing the unfolding (as shown in Figure 19) and inward folding (as shown in Figure 15) of the longitudinal frame 22. Since the longitudinal frame 22 and the transverse frame 21 are rotatably connected, when the longitudinal frame 22 folds inward, it will drive the two transverse frames 21 to move closer to each other, realizing the folding of the packaging tray 2. Since the length of the transverse frame 21 in the transverse direction is twice or more than that of the longitudinal frame 22, when the longitudinal frame 22 is folded inward, the two longitudinal frames 22 will not interfere with each other and can be folded completely, so that the packaging tray 2 has a smaller thickness after folding.

[0076] The bottom of the transverse frame 21 is connected to the bottom support frame 211 via two connecting rods 214. Specifically, one end of the connecting rod 214 is connected to the transverse frame 21, and the middle section of the connecting rod 214 forms a pivot tube 215 that extends into the packaging tray 2. The bottom support frame 211 is hinged to the pivot tube 215 and can rotate around its hinge point on the pivot tube 215, so that an angle of approximately 0-90° is formed between the bottom support frame 211 and the transverse frame 21 to which it is connected.

[0077] The main body of the bottom support frame 211 is slightly shorter in the lateral direction than the distance between the two longitudinal frames 22, and the pivot tube 215 is higher in the height direction than the lower rod 223 of the longitudinal frame 22. This arrangement ensures that when the packaging tray 2 is folded, the bottom support frame 211 and the longitudinal frame 22 are on the same vertical plane without interfering with each other. The bottom support frame 211 has snap-fit ​​pieces 213 at both lateral ends. These snap-fit ​​pieces 213 protrude from the bottom support frame 221 towards the longitudinal frame on the same side and have snap-fit ​​interfaces. Correspondingly, the longitudinal frame 22 has upwardly protruding snap-fit ​​protrusions 224. The snap-fit ​​pieces 213 and snap-fit ​​protrusions 224 constitute the snap-fit ​​structure of this embodiment. When the bottom support frame 211 is perpendicular to the lateral frame 21, the snap-fit ​​pieces 213 abut against the lower rod 223 of the longitudinal frame 22, and the snap-fit ​​protrusions 224 snap into the snap-fit ​​interfaces. The main bodies of the two bottom support frames 211 are on the same horizontal plane under the support of the lower rod 223. Furthermore, the snap-fit ​​protrusion 224 is disposed on the sleeve 227 of the hinge 226, and the bottom support frame 211 forms two inwardly recessed clearance portions 212 on the side near the transverse frame 21. When the longitudinal frame 22 is folded inward and the bottom support frame 211 is parallel to the transverse frame 21, the snap-fit ​​protrusion 224 is at least partially located below the clearance portion 212, and the snap-fit ​​piece 213 is located between the vertical planes formed by the two sets of bottom support frames 211 and the two longitudinal frames 22 respectively. Since the snap-fit ​​piece 213 is thin, the effect of placing the four snap-fit ​​pieces 213 between the two vertical planes on the thickness of the folded packaging tray 2 is relatively small.

[0078] Furthermore, rollers 216 are located at the end of the connecting rod 214 near the pivot tube 215. The distance between two opposing rollers 216 connected to different transverse frames 21 is greater than the distance between the outer edges of the two transverse frames 21, allowing the two packaging devices to be stacked in the height direction as shown in FIG. 14 without damaging the individual packaging containers and their internal spring mattresses 1. As a simple alternative to this embodiment, rollers 216 can also be located at the bottom of the longitudinal frame 22.

[0079] When the merchant ships the goods or the user needs to move them, the components of the spring mattress 1 can be disassembled into the upper padding layer 11, the elastic module 12 and the base plate 13 respectively. Then, they are packaged in the first packaging container 31, the second packaging container 32 and the third packaging container 33 respectively in the manner described above. Finally, the packaged first packaging container 31, second packaging container 32 and third packaging container 33 are stacked on the packaging tray 2.

[0080] Compared to traditional packaging and transportation methods, in this embodiment, when handling the spring mattress 1, it is easier for the user to carry it by breaking it down into smaller units and storing them in individual packaging containers. Then, during transportation, the individual packaging containers are compactly and securely secured by the packaging bracket 2, and the packaging bracket 2 is equipped with rollers 216 to make handling more convenient and effortless.

[0081] Example 2

[0082] The difference between Embodiment 2 and Embodiment 1 is that the packaging device further includes an integral packaging container 4. In this embodiment, as shown in Figures 21 and 22, the individual packaging containers are stacked in the height direction and then housed in the integral packaging container 4, which is housed in the packaging tray 2. The integral packaging container 4 can fix the stacked individual packaging containers, making the stacking more secure.

[0083] The above are merely preferred embodiments of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention. Industrial applicability

[0084] This invention discloses a packaging bracket and packaging and transportation method for spring mattresses. The packaging bracket includes two opposing transverse frames, two opposing longitudinal frames, and rollers. The longitudinal frames can be folded inward. A bottom support frame is connected to the bottom of each transverse frame. The bottom support frame can rotate to form an angle of 0°-90° with the transverse frame it is connected to. When the bottom support frame rotates to be perpendicular to the transverse frame, both ends of the bottom support frame in the transverse direction are respectively engaged with one of the longitudinal frames via a snap-fit ​​structure. Both ends of the transverse frame are rotatably connected to one end of each of the two longitudinal frames. The length of the transverse frame in the transverse direction is greater than or equal to twice the length of the longitudinal frames in the longitudinal direction. The rollers are located at the bottom of either the transverse or longitudinal frame. This method can reduce the individual packaging volume of spring mattresses, facilitate transportation and handling, save labor costs, and prevent damage and deformation of the spring mattresses, thus possessing industrial practicality.

Claims

1. A packaging tray for a spring mattress, characterized in that, It includes two opposing transverse frames, two opposing longitudinal frames, and rollers, the longitudinal frames being capable of folding inwards; The bottom of the transverse frame is connected to a bottom support frame via a connecting rod. The bottom support frame can rotate relative to the connecting rod. When the bottom support frame rotates to be perpendicular to the transverse frame, both ends of the bottom support frame in the transverse direction are respectively engaged with a longitudinal frame via a snap-fit ​​structure. Both ends of the transverse frame are rotatably connected to one end of each of the two longitudinal frames. The length of the transverse frame in the transverse direction is greater than or equal to twice the length of the longitudinal frames in the longitudinal direction. The roller is located at the end of the bottom connecting rod of the transverse frame.

2. The packaging tray as described in claim 1, characterized in that, The main body of the connecting rod is on the same vertical plane as the transverse frame. The end of the connecting rod away from the transverse frame has an inwardly protruding pivot tube, and the bottom support frame is rotatably connected to the pivot tube.

3. The packaging tray as described in claim 2, characterized in that, The length of the bottom support frame in the lateral direction is less than or equal to the distance between the two longitudinal frames.

4. The packaging tray as described in any one of claims 1-3, characterized in that, The connection point between the bottom support frame and the connecting rod and the bottom support frame is higher than the bottom of the longitudinal frame in the height direction. When the bottom support frame is parallel to the transverse frame and the longitudinal frame is folded inward, the bottom support frame and the longitudinal frame do not interfere with each other.

5. The packaging tray as described in claim 4, characterized in that, The transverse frame is connected to the bottom support frame via two connecting rods.

6. [According to Rule 91, amended 17.10.2025] The packaging tray as claimed in claim 1, characterized in that, The snap-fit ​​structure includes snap-fit ​​pieces disposed at both ends of the bottom support frame in the transverse direction and snap-fit ​​protrusions formed by protruding upward from the corresponding positions of the longitudinal frame. The snap-fit ​​pieces protrude from the bottom support frame toward the longitudinal frame on the same side and have snap-fit ​​interfaces. When the bottom support frame is perpendicular to the transverse frame, the snap-fit ​​piece abuts against the longitudinal frame and the snap-fit ​​protrusion snaps into the snap-fit ​​interface, and the main bodies of the two bottom support frames are on the same horizontal plane under the support of the longitudinal frame.

7. [Correction 17.10.2025 according to Rule 91] The packaging tray as described in claim 6, characterized in that, The length of the bottom support frame in the longitudinal direction is less than or equal to half the length of the longitudinal frame in the longitudinal direction.

8. [According to Rule 91, amended 17.10.2025] The packaging tray as claimed in claim 6 or 7, characterized in that, The bottom support frame forms two inwardly recessed clearance portions on the side near the transverse frame. When the longitudinal frame is folded inward and the bottom support frame is parallel to the transverse frame, the snap-fit ​​protrusion is at least partially located below the clearance portions.

9. [Correction 17.10.2025 according to Rule 91] The packaging tray as claimed in claim 8, characterized in that, The transverse frame includes two side bars, and the longitudinal frame includes an upper bar, a lower bar, and a side bar. The upper bar and the lower bar are pivotally connected to the side bar of the longitudinal frame on the same side. The end of the upper rod away from the side rod of the longitudinal frame extends downward and is pivotally connected to the side rod of the transverse frame; the end of the lower rod away from the side rod of the longitudinal frame extends upward and is pivotally connected to the side rod of the transverse frame; the side rod of the longitudinal frame is pivotally connected to the side rod of the transverse frame on the same side.

10. [Correction 17.10.2025 according to Rule 91] The packaging tray as claimed in claim 9, characterized in that, The upper rod consists of two sections connected by a hinge, and the lower rod consists of two sections connected by another hinge. The hinge includes two opposing sleeves. The closed end of each sleeve has an upper and a lower flat plate, with a groove between the two flat plates. Each flat plate has a through hole. One flat plate of each sleeve is inserted into the groove of the other sleeve, and a pin is inserted into the through hole to form the hinge. The two sections of the upper rod are respectively sleeved in a sleeve of the hinge, thereby connecting the two upper rods; The two sections of the lower rod are respectively sleeved in a sleeve of the hinge, thereby connecting the two lower rods.

11. [Correction 17.10.2025 according to Rule 91] The packaging tray as claimed in claim 10, characterized in that, The snap-fit ​​protrusion is provided on the sleeve.

12. [Correction 17.10.2025 according to Rule 91] The packaging tray as claimed in claim 3, characterized in that, The rollers are located at the end of the connecting rod near the pivot tube, and the distance between two opposing rollers connected to different transverse frames is greater than the distance between the outer edges of the two transverse frames.

13. [Corrected according to Rule 91, 17.10.2025] A method for packaging and transporting a spring mattress, the spring mattress comprising a detachable upper padding layer, an elastic module, and a base plate, wherein the upper padding layer is a soft padding layer, the elastic module is formed by detachably connecting multiple spring units, and the base plate is formed by detachably splicing base plate units, characterized in that: Packaging is performed by a packaging device, which includes a plurality of individual packaging containers and a packaging tray as described in any one of claims 1-13; The elastic module is housed in the individual packaging container and is locked in a compressed state along its elastic direction; the elastic module is housed in two or more individual packaging containers, which are stacked in the packaging tray.

14. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method as described in claim 13, characterized in that, The upper padding layer is housed in a separate packaging container, and the bottom plate is housed in at least one separate packaging container.

15. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method as described in claim 13, characterized in that, The base plate is disassembled and stacked in the individual packaging container.

16. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method as described in claim 13, characterized in that, The upper padding layer is folded or rolled up and stored in the individual packaging container.

17. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method according to any one of claims 13-16, characterized in that, The individual packaging container has handle holes on two opposite side walls.

18. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method according to any one of claims 13-16, characterized in that, The top surface of the individual packaging container is provided with a handle.

19. [Correction 17.10.2025 according to Rule 91] The packaging and transportation method according to any one of claims 13-16, characterized in that, The packaging device also includes an integral packaging container, in which the individual packaging containers are stacked and housed, and the integral packaging container is housed within the packaging tray.

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