Suitcases made from foam

Abstract

To provide a suitcase made of foam material, which has a production cost significantly lower than that of an aluminum alloy housing, has impact resistance far superior to that of a PC blow molding housing and an aluminum alloy housing, and is relatively light in weight and easy to carry. [Solution] A suitcase made of foam material includes a housing that forms an opening and a housing lid that fits over the opening, the housing lid and the housing are both made of foam material, and fixing members are provided at the connection between the side walls of the housing or adjacent side walls of the housing, the fixing members acting on the reinforcing surface of the housing, and the foam material is EPP. The EPP material used for the housing and housing lid of this invention has excellent weather resistance, making the suitcase suitable for use in extremely high and low temperature environments.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to a Chinese utility model patent bearing application number 202421784232.6, filed on July 26, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of suitcases, and in particular to suitcases made of foam material. [Background technology]

[0003] A rigid suitcase is a suitcase made of a specific material and has specific characteristics, and its housing material is relatively hard and resistant to deformation. Rigid suitcases are generally applicable to long-distance travel, business trips, and other occasions where a relatively large number of items or heavy luggage needs to be carried. The sturdy housing can better protect the items inside and can also withstand rough handling and transportation processes.

[0004] Rigid suitcases are made from a variety of materials, with the most common being PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), and aluminum alloy, all of which have relatively high hardness and strength and can meet the pressure resistance and impact resistance requirements of rigid suitcases. Currently, most rigid suitcases on the market generally have plastic blow-molded housings or aluminum alloy housings, with most plastic blow-molded housings being PC blow-molded housings. The main drawbacks of PC blow-molded housings are poor abrasion resistance, relatively poor weather resistance, susceptibility to deformation at high temperatures, susceptibility to brittleness and damage at low temperatures, the tendency for fingerprints, dirt, and grime to remain on the surface, and the tendency for the color to turn yellow after prolonged use, which affects aesthetics. The first drawback of aluminum alloy housings is that they are very heavy, difficult to transport, relatively expensive to manufacture, the surface is easily dented when impacted and difficult to repair, affecting aesthetics, and like PC blow-molded housings, aluminum alloy housings are prone to fingerprints and oil stains, are difficult to clean, and the case is relatively hard, so they cannot provide good protection against vibrations to the internal components, and aluminum alloys are relatively sensitive to temperature changes, and are prone to thermal expansion and cooling contraction in extreme temperature environments. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION The object of the present invention is to provide a suitcase made of foam material to solve the above technical problems. [Means for solving the problem]

[0006] The technical solution to achieve the purpose of this invention is as follows:

[0007] The present invention provides a suitcase made of foam material, which includes a housing that forms an opening and a housing cover that covers the opening, the housing cover and the housing are both made of foam material, and a fixing member is provided at the connection portion of a side wall of the housing or an adjacent side wall of the housing, and the fixing member acts on a reinforcing surface of the housing, Furthermore, the foam material is EPP, and the housing lid is rotatably connected to the housing.

[0008] The device further includes a shock-absorbing assembly located on the housing or the housing lid, the shock-absorbing assembly including a bottom case.

[0009] The bottom case further includes casters, the bottom case being installed at the bottom of the housing, and the casters being fixedly connected to the bottom case.

[0010] Furthermore, the bottom case is installed on the bottom of the housing, and the bottom case is fixedly connected to the housing via a bottom case interlock member.

[0011] Furthermore, there are multiple fixing members, and the multiple fixing members are installed around multiple side walls of the circumferential direction of the housing, with a pitch between adjacent fixing members, and the fixing members are embedded in the side walls of the housing or in the connecting parts of adjacent side walls of the housing to reinforce the side walls of the housing, and a housing lid metal frame is provided on the housing lid, and the housing lid metal frame is installed along the circumferential direction of the housing lid, and a housing metal frame is provided on the housing, and the housing metal frame is installed along the circumferential direction of the housing.

[0012] Furthermore, a housing lid metal frame is fixed onto the housing lid, the housing metal frame is fixed to a position of the housing relative to the housing lid, the housing lid covers the housing with the housing lid metal frame and the housing metal frame in contact with each other, and the housing metal frame is fixedly connected to the fixing member, thereby realizing relative fixation between the housing and the housing metal frame.

[0013] Furthermore, an auxiliary container and an auxiliary container lid are provided on the housing, the auxiliary container lid is rotatably connected to the housing, and a tightening mechanism is provided between the housing and the auxiliary container lid, and the tightening mechanism locks the auxiliary container lid.

[0014] The tightening mechanism further includes a button, a lock lever, a dial, a slide block, a reset assembly, a lock block, and a lock groove. The button has a horizontal groove that accommodates the lock lever when the button is pressed. The dial is installed inside the housing and connected to the lock lever via a fastener. The lock lever can be switched between a first position and a second position via the dial. The slide block has first and second slopes, and the slide lever is fixedly connected to the lock block. The first slope of the slide block abuts against the bottom edges on the left and right sides of the button, and the second slope of the slide block abuts against the slide lever. The lock groove is installed on the auxiliary container lid and engages with the lock block to lock the auxiliary container lid.

[0015] Furthermore, at least one handle is installed on the housing, the handle is fixed to a side of the housing, and the housing further includes a pull rod, the pull rod is located on both sides of the housing. [Effects of the Invention]

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The case and case cover of the present invention are made of EPP material, with the metal case cover frame fixed onto the case cover and the metal case frame fixed onto the case via a case insert sheet metal, thereby overcoming the relatively weak shear resistance of EPP material, and the excellent weather resistance of the EPP material used allows the suitcase to be used in extreme high and low temperature environments. The production costs of the EPP hard case of the present invention are significantly lower than those of an aluminum alloy case, its impact resistance is far superior to that of a PC blow-molded case and an aluminum alloy case, and it is relatively light in weight, making it easy to transport. [Brief explanation of the drawings]

[0018] The drawings in the specification that form a part of this application are intended to provide a further understanding of the present invention, and the illustrative embodiments of the present invention and the description thereof are intended to interpret the present invention and do not constitute undue limitations on the present invention. [Figure 1] 1 is a perspective view of a suitcase made of foam material according to the present invention; [Figure 2] FIG. 2 is a front view of the housing according to the present invention. [Figure 3] FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2 according to the present invention. [Figure 4] FIG. 4 is an enlarged view of a portion B in FIG. 3 according to the present invention. [Figure 5] 1 is a structural schematic diagram of a fixing member according to the present invention; [Figure 6] 1 is a schematic diagram of the connection between the bottom case and the casters according to the present invention; [Figure 7] 1 is a structural schematic diagram of an auxiliary storage according to the present invention; [Figure 8] FIG. 2 is a cross-sectional view of an auxiliary storage unit according to the present invention. [Figure 9] 1 is a cross-sectional view of a clamping mechanism on a housing according to the present invention; [Figure 10] FIG. 10 is an enlarged view of a portion C in FIG. 9 according to the present invention. [Figure 11] 1 is a structural diagram of the auxiliary storage and clamping mechanism of the present invention; [Figure 12] 1 is a schematic diagram of the auxiliary storage and clamping mechanism of the present invention; [Figure 13] FIG. 13 is a locally enlarged view of D in FIG. 12 according to the present invention. [Figure 14] 1 is a structural schematic diagram of a clamping mechanism according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0019] The following clearly and completely describes the technical solutions in the embodiments of the present invention, in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is explanatory in nature and in no way restricts the present invention and its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort are all within the scope of protection of the present invention.

[0020] It should be noted that the terminology used herein is merely for the purpose of describing modes for implementing the invention and is not intended to limit the exemplary embodiments according to the present application. For example, unless the context clearly indicates otherwise, the singular forms used herein are intended to include the plural forms. It should be further understood that when the terms "comprise" and / or "include" are used herein, it specifies that features, steps, operations, devices, assemblies, and / or combinations thereof are present.

[0021] Unless specifically stated otherwise, the relative arrangement of components and steps, digital expressions, and numerical values ​​detailed in these examples do not limit the scope of the present invention. At the same time, it is self-evident that, for convenience of explanation, the sizes of each part shown in the drawings are not drawn to scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but, where appropriate, such techniques, methods, and devices should be considered part of this specification. In all examples shown herein, any specific values ​​should be construed as illustrative and not limiting. Therefore, other examples of the illustrative embodiments may have different values. It should be noted that like reference numerals and letters represent similar items in the following drawings, so that once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] Referring to FIG. 1 , an embodiment of the present invention provides a suitcase made of foam material. The suitcase includes a housing 1 that defines an opening and a housing lid 2 that fits over the opening. The housing lid 2 is rotatably connected to the housing 1 via a rotation mechanism, and further includes a buffer assembly located on the housing 1 or the housing lid 2. Both the housing lid 2 and the housing 1 are made of foam, such as EPP (expanded polypropylene), PS (polystyrene), PU (polyurethane), PE (polyethylene), or PVC (polyvinyl chloride). In this embodiment, the housing lid 2 and the housing 1 are made of EPP. EPP is a highly crystalline polymer / gas composite material with outstanding performance. Its unique and excellent properties have made it the fastest-growing new, environmentally friendly pressure-resistant, buffer, and insulating material. EPP products have excellent seismic energy absorption, a high recovery rate after deformation, excellent heat resistance, chemical resistance, oil resistance, and insulation properties. Furthermore, EPP material is lightweight, significantly reducing the weight of items.

[0023] The thickness of the housing is 5 to 20 times that of a normal housing; if the thickness is too thin, it cannot be molded and the strength will not pass the housing test, making it difficult to meet actual usage needs. In conventional technology, the thickness of an aluminum alloy housing is 5 to 6 mm, and the empty box weighs more than 4.5 kg. The thickness of a PC housing is 1 to 2 mm, and the empty box weighs more than 4 kg. In this embodiment, by selecting EPP material, the thickness of the EPP housing and EPP housing cover reaches 20 to 25 mm (preferably 25 mm), but the entire empty box weighs less than 4 kg. In other words, although the thickness of the housing appears to increase, the overall weight is reduced.

[0024] 2 to 5, in this embodiment, a fixing member 8 is provided at the side wall of the housing 1 or at the connecting portion of adjacent side walls. Adjacent side walls refer to the connecting portion of two connected side walls of the housing 1. The fixing member 8 acts on the reinforcing surface of the housing 1 to increase the strength of the side wall of the housing 1. The fixing member 8 is embedded in the side wall of the housing 1 when the housing 1 is produced. The fixing member 8 is preferably an embedded metal housing member, which includes a first embedded portion 801, a second embedded portion 802, and an extension portion 803. A plurality of fixing members 8 are provided, and the multiple fixing members 8 are installed around multiple side walls in the circumferential direction of the housing 1, with a pitch between adjacent fixing members 8. The fixing member 8 is embedded in the side wall of the housing 1 or at the connecting portion of adjacent side walls, thereby reinforcing the side wall of the housing 1.

[0025] 1 and 2, a metal housing lid frame 7 is fixed onto the housing lid 2, and a metal housing frame 6 is fixed to the housing 1 relative to the housing lid 2. When the metal housing lid frame 7 contacts the metal housing frame 6, the housing lid 2 covers the housing 1. The metal housing frame 6 is fixedly connected to a fastener 8, realizing a relative fixation between the housing 1 and the metal housing frame 6. Next, referring to FIG. 2, the metal housing frame 6 contacts an extension 803 of the housing 2 and is fixedly connected to the extension 803 via a fastener. The metal housing frame 6 is preferably an aluminum frame. Fixing a conventional aluminum frame requires riveting the outside of the housing 1 to interlock it with the inside, leaving many rivet heads on the outer surface of the housing 1, which affects the appearance. Furthermore, the shear Poisson's ratio of EPP is lower than that of PC and aluminum alloys, making it impossible to directly rivet the aluminum frame for interlocking. In this embodiment, a plurality of fixing members 8 are fitted into the connecting portions of the side walls of the housing 1 or adjacent side walls, and through holes 804 are drilled in the extensions 803 of the fixing members 8, and the through holes 804 in the extensions 803 are fixedly connected to the metal housing frame 6 with screws. If a gasket is added to the surface of the aluminum frame of the housing 1, the screw heads are blocked and no rivet heads remain on the outside of the housing 1, resulting in a sufficiently aesthetic appearance. In actual application, the metal housing cover frame 7 is preferably installed along the circumferential direction of the housing cover 2, and the metal housing frame 6 is installed along the circumferential direction of the housing 1.

[0026] 6, in this embodiment, the buffer assembly includes a bottom case 9, which is installed at the bottom of the housing 1. The buffer assembly is installed to prevent the housing 1 from being punctured by a sharp object and leaving a dent, which would affect the aesthetics of the housing 1 and further weaken its strength.

[0027] Continuing with FIG. 6 , to simplify moving the suitcase 1, the EPP hard suitcase of this embodiment further includes casters 5. A bottom case 9 is fixedly attached to the bottom of the suitcase 1 in areas corresponding to the casters 5, and the casters 5 are fixedly connected to the bottom case 9. Preferably, the casters 5 are connected to the bottom case 9. Because the EPP material of the suitcase 1 has a relatively low hardness, it is prone to being punctured by sharp objects, leaving dents that affect aesthetics. Furthermore, the casters themselves have certain strength deficiencies, making the suitcase 1 susceptible to damage when impacted. Therefore, adding a bottom case 9 to the bottom of the suitcase 1 can prevent the bottom from being punctured by sharp objects when the suitcase is pulled. The wheel mounts of the casters 5 and the bottom case 9 can be integrated into a single unit, reinforcing the overall strength of the suitcase 1. In other embodiments (not shown), two or more casters 5 may be installed.

[0028] Continuing with reference to FIG. 6, in this embodiment, a bottom case interlock member 10 is further provided on the housing 1, and the bottom case 9 together with the bottom case interlock member 10 is fixed onto the housing 1 with screws.

[0029] 7, in this embodiment, at least one handle 3 is provided on the housing 1, and the handle 3 is directly or indirectly fixed to the housing 1 with screws or rivets, and the handle 3 is fixed to the side of the housing 1. Because the EPP housing 1 is relatively thick, a groove can be provided in the handle 3, making it easier for the user to reach out and hold it. In other embodiments (not shown), multiple handles 3 may be provided, for example, handles 3 are provided on both the top of the left and right sides of the housing.

[0030] 7 and 8, because the wall thickness of the EPP housing 1 is relatively thick, it is difficult to fix the pull rod 4, and placing the pull rod 4 in the middle of the housing 1 reduces the space utilization rate of the housing. Therefore, in this embodiment, the pull rods 4 are placed on both sides of the housing 1, and are surrounded by the four sides of the housing 1, ensuring the aesthetics of the suitcase and further improving the space utilization rate of the housing 1. The EPP hard suitcase further includes pull rods 4, which are located on both sides of the housing 1.

[0031] The pull rod 4 is located within the housing 1 and forms a cavity with the housing 1. This cavity is recessed, and an auxiliary compartment lid 12 is formed between the cavity and the auxiliary compartment lid 12, allowing the auxiliary compartment lid 12 to be rotatably connected to the housing 1. In conventional technologies, the pull rod 4 is assembled at a relative position within the housing and is typically covered with a cloth or other material, resulting in the space being unusable. However, the installation method of this embodiment makes excellent use of this space. In conventional technologies, the pull rod is typically located inside the housing, occupying the intermediate space and resulting in the space being unusable. In this embodiment, the pull rods are installed on both sides of the housing, leaving enough space in the intermediate area to form a separate compartment body. This allows for the placement of items such as computers and mobile phones, and also allows for quick access to items, such as a laptop computer being able to be removed independently during security checks on an airplane.

[0032] In this embodiment, a first lock assembly is provided on the housing 1 and the housing lid 2 to control the opening and closing of the housing lid 2, and a second lock assembly is provided between the auxiliary compartment lid 12 and the housing 1 to control the opening and closing of the auxiliary compartment lid 12. The first lock assembly and the second lock assembly may be the same or different; for example, a conventional lock assembly may be a zipper, in which case the opening and closing of the housing 1 and the auxiliary compartment 11 may be controlled independently, or the opening and closing of the housing 1 or the auxiliary compartment 11 may be achieved by a combination of engagement and locking, for example.

[0033] 9 to 14, in this embodiment, the second lock assembly is a tightening mechanism 13, which locks the auxiliary cabinet 11 to ensure the safety of valuables such as a computer. The tightening mechanism 13 includes a button 131, a lock lever 132, a dial 133, a slide block 134, a reset assembly 135, a lock block 136, and a lock groove 137.

[0034] 13 and 14 , in this embodiment, the button 131 has a horizontal slot, which is used to accommodate the lock lever 132 when the button 131 is pressed. A dial 133 is installed inside the housing 1 and is connected to the lock lever 132 via a fastener. The lock lever 132 can be switched between a first position and a second position via the dial 133. When the lock lever 132 is in the first position, the tightening mechanism 13 is in a locked state. At this time, the lock lever 132 abuts against the bottom edge of the button 131, preventing the button 131 from moving downward. When the lock lever 132 is in the second position, the tightening mechanism 13 is in an unlocked state. At this time, the lock lever 132 is located below the slot of the button 131, allowing the button 131 to move downward. After being pressed, the lock lever 132 is accommodated in the slot. After opening the housing cover 2, the user can directly observe the dial 133 inside the housing 1, and by moving the dial 133 left and right, the lock lever 132 can be moved so that it moves synchronously, thereby realizing switching of the lock lever 132 between the first position and the second position.

[0035] A first inclined surface 1341 and a second inclined surface 1342 are provided on the slide block 134, and a slide lever 1361 is fixedly connected on the lock block 136. Here, the first inclined surface 1341 of the slide block 134 abuts against the bottom edges on both the left and right sides of the button 131, and when the button 131 moves downward, the bottom edge slides downward along the first inclined surface 1341, urging the slide block 134 to move away from the button 131. The second inclined surface 1342 of the slide block 134 abuts against the slide lever 1361, and when the slide block 134 moves away from the button 131, the slide lever 1361 The lock block 136 slides upward along the second inclined surface 1342, moving further upward. A lock groove 137 is provided on the auxiliary storage lid 12, and this lock groove 137 works in conjunction with the lock block 136 to lock or unlock the auxiliary storage lid 12. When the lock block 136 enters the lock groove 137, the auxiliary storage lid 12 is locked and cannot be opened, and when the lock block 136 moves upward and disengages from the lock groove 137, the auxiliary storage lid 12 is unlocked and can be opened.

[0036] The reset assembly 135 includes a fixed block 1351 and a reset spring 1352. The fixed block 1351 is disposed between the first inclined surface 1341 and the second inclined surface 1342. Both ends of the reset spring 1352 abut against the sliding block 134 and the fixed block 1351, respectively. After the user presses the button 131, the sliding block 134 moves away from the button 131, and the reset spring 1352 deforms and stores elastic potential energy. After the user releases the button 131, the reset spring 1352 releases the elastic potential energy and pushes the sliding block 134 to move toward the button 131, thereby resetting the button 131 to its initial position.

[0037] In this embodiment, since the suitcase is relatively large and the auxiliary compartment 11 is correspondingly large, in order to prevent the side edges of the auxiliary compartment cover 12 from being distorted and causing a gap to appear between the auxiliary compartment cover 12 and the housing 1, two slide blocks 134, two reset assemblies 135 and two lock blocks 136 are installed, and two lock grooves 137 on the auxiliary compartment cover 12 are also installed at positions corresponding to the lock blocks 136, thereby realizing stable locking.

[0038] In actual use, when the user needs to lock the auxiliary storage lid 12, the lock lever 132 can be moved to the first position using the dial 133 inside the housing 1, at which time the lock lever 132 abuts against the bottom edge of the button 131, the button 131 cannot be pressed, and the auxiliary storage lid 12 remains locked.

[0039] When a user needs to open the auxiliary container lid 12 or quickly remove an item from the auxiliary container 11, the user moves the lock lever 132 to the second position using the dial 133 in the housing 1. At this time, the lock lever 132 is located below the groove of the button 131 and can be pressed. The user presses the button 131 to move it downward, so that the lock lever 132 is housed in the groove and the button 131 moves downward, moving the slide block 134. The movement of the slide block 134 drives the lock block 136 to move upward and disengages the lock block 136 from the lock groove 137. At this time, the user can open the auxiliary container lid 12 and remove an item. After removing the item, the user closes the auxiliary container lid 12 and releases the button 131. The reset assembly 135 drives the slide block 134 to reset and restores the button 131. Users can complete locking and unlocking by simply switching the lock lever and pressing the button, meeting the needs of quickly taking out and putting away items and improving the user experience.

[0040] Suitcases made with foam materials according to embodiments of the present invention are less expensive than suitcases with aluminum alloy housings. EPP has a simple molding process and is much cheaper than aluminum alloys. Its impact resistance is far superior to that of PC and aluminum alloy housings. EPP is relatively soft, so even when subjected to strong impacts, the EPP housing itself can cushion the impact and not cause permanent dents, providing excellent protection for the contents inside. EPP has excellent weather resistance, with no significant change in material performance in extreme high or low temperature environments. It also has very low water absorption and is not susceptible to deterioration by fading or mold, giving it significant advantages over PC housings. EPP has excellent chemical stability. PC housings have very poor resistance to strong acids, alkalis, and some organic solvents, while aluminum alloy housings are susceptible to corrosion by acidic solvents. EPP has a much lower density than PC and aluminum alloys and is relatively lighter, making it a significant advantage for suitcases that require frequent transportation. Furthermore, EPP materials can be 100% recycled and reused, making them extremely environmentally friendly, while the production and recycling of aluminum alloys has a relatively large impact on the environment.

[0041] In describing the present invention, it should be understood that the orientations or positional relationships indicated by directional terms, such as "front, back, up, down, left, right," "lateral, longitudinal, vertical, horizontal," and "top, bottom," are generally orientations or positional relationships shown based on the drawings, and are intended merely to facilitate and simplify the description of the present invention; unless otherwise stated, these directional terms do not indicate or imply that the referred-to devices or elements necessarily have a specific orientation or are constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the scope of protection of the present invention; and the directional terms "inside, outside" refer to the inside and outside of the outline of each member itself.

[0042] For convenience of description, spatially relative terms, such as "top," "above," "on top," "above," etc., may be used herein to describe the spatial relationship of one device or feature shown in the figures to another. It should be understood that spatially relative terms are intended to encompass different orientations in use or operation of a device other than the orientation depicted in the figures. For example, if a device in the figures is inverted, it may be described as "above other devices or structures" or "on other devices or structures" and then positioned "below other devices or structures." Thus, the exemplary term "above" may encompass both orientations, "above" and "below." The device may be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

[0043] It should be noted that, for the convenience of distinguishing the relevant components, terms such as "first" and "second" are used to limit the components, and unless otherwise specified, the above terms have no special meaning and should not be understood as limiting the scope of protection of the present invention.

[0044] The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and changes to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. [Explanation of symbols]

[0045] DESCRIPTION OF SYMBOLS 1 Housing, 2 Housing lid, 3 Handle, 4 Pull rod, 5 Caster, 6 Housing metal frame, 7 Housing lid metal frame, 8 Fixing member, 801 First fitting portion, 802 Second fitting portion, 803 Extension portion, 804 Through hole, 9 Bottom case, 10 Bottom case interlock member, 11 Auxiliary storage, 12 Auxiliary Cabinet lid, 13···Tightening mechanism, 131···Button, 132···Lock lever, 133···Dial, 134···Slide block, 1341···First inclined surface, 1342···Second inclined surface, 135···Reset assembly, 1351···Fixing block, 1352···Reset spring, 136···Lock block, 1361···Slide lever, 137···Lock groove.

Claims

1. A suitcase made of a foam material, including a housing that forms an opening and a housing lid that covers the opening, The housing cover and the housing are both made of foam material; A suitcase made of foam material, characterized in that a fixing member is provided at the connection between a side wall of the housing or adjacent side walls of the housing, and the fixing member acts on a reinforcing surface of the housing.

2. 10. The suitcase made of foam material according to claim 1, wherein the foam material is expanded polypropylene and the housing lid is rotatably connected to the housing.

3. 10. The suitcase made of foam material according to claim 1, further comprising a shock-absorbing assembly located on the housing or the housing lid, the shock-absorbing assembly comprising a bottom case.

4. Further including casters, The bottom case is installed at the bottom of the housing, 3. The suitcase made of foam material according to claim 2, wherein the casters are fixedly connected to the bottom case.

5. The bottom case is installed at the bottom of the housing, 3. The suitcase made of foam material of claim 2, wherein the bottom case is fixedly connected to the housing via a bottom case interlocking member.

6. a plurality of the fixing members are provided around a plurality of side walls in the circumferential direction of the housing, and adjacent fixing members are spaced apart at a pitch; the fixing member is embedded in a side wall of the housing or in a joint between adjacent side walls of the housing to reinforce the side wall of the housing; a housing lid metal frame is provided on the housing lid, and the housing lid metal frame is installed along a circumferential direction of the housing lid; 2. The suitcase made of foam material according to claim 1, wherein a metal frame is provided on the housing, and the metal frame is installed along the circumferential direction of the housing.

7. a housing lid metal frame is fixed on the housing lid, the housing metal frame is fixed to a position of the housing relative to the housing lid, and the housing lid covers the housing with the housing lid metal frame in contact with the housing metal frame; 2. The suitcase made of foam material according to claim 1, wherein the metal housing frame is fixedly connected to the fixing member to achieve relative fixation between the housing and the metal housing frame.

8. 2. The suitcase made of foam material according to claim 1, wherein an auxiliary compartment and an auxiliary compartment lid are provided on the housing, the auxiliary compartment lid is rotatably connected to the housing, and a tightening mechanism is provided between the housing and the auxiliary compartment lid, and the tightening mechanism locks the auxiliary compartment lid.

9. The tightening mechanism includes a button, a lock lever, a dial, a slide block, a reset assembly, a lock block, and a lock groove; The button has a horizontal slot that is used to accommodate the lock lever when the button is pressed; a dial disposed inside the housing and coupled to the lock lever via a fastener, the lock lever being switchable between a first position and a second position via the dial; a first inclined surface and a second inclined surface are provided on the slide block, and a slide lever is fixedly connected to the lock block; wherein the first inclined surface of the slide block abuts against the bottom edges of both the left and right sides of the button, and the second inclined surface of the slide block abuts against the slide lever; 9. The suitcase made of foam material according to claim 8, wherein the locking groove is provided on the auxiliary compartment cover and cooperates with the locking block to lock the auxiliary compartment cover.

10. At least one handle is provided on the housing, and the handle is fixed to a side surface of the housing; 10. The suitcase made of foam material of claim 1, further comprising a pull rod, said pull rod being located on each side of said housing.

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