Sealing box
By employing L-shaped and inverted L-shaped stepped structures and rounded corner designs on the enclosure and lid, the problem of sealing strip extrusion and deformation in traditional sealing structures is solved, achieving a longer seal life and a stronger sealing effect, making it suitable for lightweight enclosures in transportation and military fields.
Patent Information
- Application Number
- CN202423114880.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The flush design of traditional hinged or folded sealing structures leads to deformation of the sealing strip due to compression, resulting in poor sealing performance and severe wear of the sealing strip after prolonged use.
The enclosure and lid are designed with L-shaped and inverted L-shaped stepped structures. The elastic seals are set between the parallel and inclined stepped structures. Combined with rounded corner design and ring limit strip, the elastic seals are prevented from being fatigued by stress during the fastening process, thereby increasing sealing performance and service life.
It improves the service life of the seals, enhances sealing performance, and is suitable for enclosure structures with high sealing and lightweight requirements.
Smart Images
Figure CN223920049U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the sealed structure field of metal and nonmetal product, concretely relates to a sealed box. BACKGROUND
[0002] The traditional sealed structure with folding leaf or hinge type opening and closing type forms single fulcrum "lever" structure with folding leaf or hinge connecting fixed end, and the sealing surface is basically flush structure. Therefore, when the sealing cover or sealing door is closed and sealed with the sealing box body or sealing frame, the sealing strip of the folding leaf or hinge connecting end is easily extruded and deformed, which can cause the problems of reduced contact area between the sealing surface and the sealing strip, insufficient compression of the sealing strip and serious wear of the sealing strip after long time use, and seriously affects the sealing effect of the product.
[0003] The sealed structure of the sealed box disclosed in publication No. CN202009556U sets the elastic sealing member in the groove on the upper edge of the box body, and the elastic sealing member in the groove is resisted by the resisting plate on the box cover to realize sealing when the box cover is buckled. However, the groove structure on the upper edge of the box body is easy to accommodate foreign matters, and the elastic sealing body at the hinged end is still extruded additionally compared with the elastic sealing body at the locked end, which affects the sealing effect.
[0004] Therefore, it is necessary to optimize the structure of the traditional sealed structure with folding leaf or hinge type for solving the problem of poor sealing. CONTENT OF THE UTILITY MODEL
[0005] The utility model aims at solving the problem of poor sealing caused by the extrusion and deformation of the sealing strip at the folding leaf or hinge connecting end due to the flush structure design of the sealing surface of the traditional sealed structure with folding leaf or hinge type opening and closing type. In order to overcome the shortcomings of the prior art, the utility model aims at providing a sealed box.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0007] The utility model discloses a sealed box, which comprises a box cover, a box body and an elastic sealing member. The box body and the box cover are hinged, the upper edge of the box body is an L-shaped stepped structure, and the edge of the box cover is an inverted L-shaped stepped structure matched with the shape of the L-shaped stepped structure. The upper layer step part of the L-shaped stepped structure is inclined to the outer wall of the box body relative to the inner wall of the box body, and the lower layer step part is inclined to the outer wall of the box body relative to the inner wall of the box body. The lower layer inverted step part of the inverted L-shaped stepped structure is inclined to the outer wall of the box body relative to the inner wall of the box body, and the upper layer inverted step part is inclined to the outer wall of the box body relative to the inner wall of the box body. The upper layer step part, the lower layer step part, the lower layer inverted step part and the upper layer inverted step part are parallel to each other.
[0008] The gap between the upper layer step portion and the upper layer inverted step portion is provided with a first elastic sealing member.
[0009] Preferably, the gap between the upper layer step portion and the upper layer inverted step portion is provided with a first elastic sealing member.
[0010] Preferably, the gap between the lower layer step portion and the lower layer inverted step portion is provided with a second elastic sealing member.
[0011] Preferably, the second round corner between the upper layer step portion of the L-shaped step structure of the upper edge of the box body and the step side wall is a round corner, and the first round corner between the lower layer inverted step portion of the inverted L-shaped step structure of the lid edge and the step side wall of the inverted L-shaped step structure is a round corner.
[0012] Preferably, an annular sealing limiting strip is arranged on the inner side of the upper layer inverted step portion relative to the outer edge of the box cover.
[0013] Preferably, the end surface of the annular sealing limiting strip is an arc surface.
[0014] Preferably, the box body and the box cover are connected by a hinge device, and a lock catch device is arranged on the opposite side of the hinge device to lock the box body and the box cover.
[0015] Preferably, the box body and the box cover are each independently a structural member made of metal, engineering plastic or fiber reinforced resin-based composite material.
[0016] Preferably, the box body and the box cover are hingedly connected by a metal or non-metal connecting member.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] The utility model discloses a box cover and the L-shaped step structure of the chain end on the box body are arranged with the opposite step portion of the inverted L-shaped step structure, and the opposite step portion is an inclined surface with an angle with the horizontal plane, so that the elastic sealing member is not always in the state of being compressed between the box body and the box cover during the buckling process. With the corresponding adjustment of the inclination angle of the upper layer step portion and the lower layer step portion relative to the inner wall of the box body, and the inclination angle of the lower layer inverted step portion and the upper layer inverted step portion relative to the outer wall of the box cover, the elastic sealing member at the hinge end and the sealing member at the buckling end opposite to the hinge can be synchronously compressed. In this case, the elastic sealing member at the hinge end does not go through the additional deformation process of pressure increase-pressure release-pressure stabilization during the buckling process, which can avoid unnecessary fatigue and prolong the service life of the elastic sealing member. Meanwhile, the sealing performance of the box body is improved.
[0019] Furthermore, the second elastic sealing member can improve the sealing performance of the whole structure.
[0020] Further, by setting the corners as rounded corners, the abutting surface of the sealing member can initially abut the elastic sealing member at a non-specific sharp corner, and the abutting surface of the sealing member and the release point of the elastic sealing member become a point for relative rolling, which is located at the rounded corner. Meanwhile, since the elastic sealing member is an elastic body, the initial abutting mode during fastening becomes a concave arc closely abutting the rounded corner of the abutting surface, and the pressure of the elastic sealing member during the initial stage of fastening is further reduced.
[0021] Further, the limiting strip helps prevent displacement of the first linear elastic sealing member.
[0022] By applying the novel sealing structure to a fiber-reinforced composite box body with light weight, high strength and high designability, the high light weight and high sealing requirements of the box body structure in the fields of transportation and military can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a schematic view of the sealing box structure of the present application;
[0024] Figure 2 is a schematic view of the hinge end cooperation structure of the present application;
[0025] Figure 3 is a schematic view of the sealing box structure of the present application;
[0026] In the figure, 1 is a box cover, 2 is a box body, 311 is an upper inverted step portion, 321 is an upper step portion, 312 is a lower step portion, 322 is a lower inverted step portion, 4 is a locking device, 5 is an elastic sealing member, 501 is a first elastic sealing member, 502 is a second elastic sealing member, 6 is a hinge device, 7 is an annular sealing limiting strip, 8 is a hook, 9 is a buckle, R1 is a first rounded corner, and R2 is a second rounded corner. DETAILED DESCRIPTION
[0027] In order to make personnel in the technical field better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
[0028] It should be noted that in the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0029] The utility model will be further described in detail below in combination with the drawings:
[0030] Please refer to Figure 1 The utility model discloses a sealing structure of box, including the elastic sealing element 5 set on the box 2 and the box cover 1, the box 2 and the box cover 1 are hinged, and the upper edge of the box 2 is L-shaped ladder structure, and the edge of the box cover 1 has inverted L-shaped ladder structure corresponding to the shape of the upper edge of the box 2.
[0031] The upper layer step part 321 of L-shaped ladder structure is inclined to the outer wall of the box relative to the inner wall of the box, and the lower layer step part 312 is inclined to the outer wall of the box relative to the inner wall of the box, the lower layer inverted step part 322 of inverted L-shaped ladder structure is inclined to the outer wall of the box relative to the inner wall of the box, and the upper layer inverted step part 311 is inclined to the outer wall of the box relative to the inner wall of the box, the upper layer step part 321, the lower layer step part 312, the lower layer inverted step part 322 and the upper layer inverted step part 311 are parallel to each other, and the gap for arranging the elastic sealing element 5 is formed between the opposite step parts of L-shaped ladder structure and inverted L-shaped ladder structure.
[0032] Generally, in the closing process, the elastic seal 5 starts to be in linear contact with the opposite surface at the initial stage of the closure of the box cover 1 and the box body 2, and the elastic seal 5 starts to be deformed. With the gradual closure of the box cover 1, the contact between the elastic seal 5 and the opposite surface gradually changes from linear contact to surface contact, the area of the contact surface gradually increases, and the contact surface reaches the maximum at the closure. In this process, the pressure borne by the elastic seal 5 at the hinged end experiences a process of rapid increase- relatively slow decrease-stability. Before the pressure is stable, the elastic seal 5 at the hinged end experiences an unnecessary process of rapid increase-decrease of pressure, and this process is also an additional process relative to the pressure change of the seal at the closure end. Because of this additional stress process, the fatigue degree of the elastic seal 5 at the hinged end is higher than that of the elastic seal 5 at the closure end, and long-term service will cause problems such as poor sealing effect.
[0033] The upper layer step part 321, the lower layer step part 312, the lower layer inverted step part 322 and the upper layer inverted step part 311 on the box cover 1 and the box body 2 are parallel to each other and are inclined surfaces matched with each other, so that the elastic seal 5 will not be in a compressed state at the initial stage of the closure of the box cover 1 and the box body 2.
[0034] Furthermore, the width of the box cover 1 is adjusted to adjust the inclination angle of the inclined surface, so that the elastic seal 5 at the hinged end is preferably compressed synchronously with the elastic seal 5 at the closure end opposite to the hinge device 6. In this case, the elastic seal 5 at the hinged end does not undergo the additional deformation process of pressure increase-pressure release-pressure stability during the closure process, thereby avoiding unnecessary fatigue, prolonging the service life of the elastic seal 5, and improving the sealing performance of the box.
[0035] In some embodiments of the utility model, the first elastic seal 501 is arranged in the gap enclosed by the upper layer step part 321 and the upper layer inverted step part 311.
[0036] In some embodiments of the utility model, the second elastic seal 502 is arranged in the gap enclosed by the lower layer inverted step part 322 and the lower layer step part 312, so that the entire structure has stronger sealing performance.
[0037] In other embodiments of the utility model, the second round corner R2 between the upper layer step part of the L-shaped step structure on the box body 2 and the step side wall is a round corner, and the first round corner R1 between the lower end surface of the inverted L-shaped step structure on the edge of the box cover 1 and the step outer side wall is a round corner.
[0038] By setting the corners as rounded corners, the abutting surface of the sealing member can be initially in contact with the elastic sealing member in a non-specific sharp corner, and the abutting surface of the sealing member and the release point of the elastic sealing member become a point for relative rolling, which is located in the rounded corner. Meanwhile, since the elastic sealing member is an elastomer, the initial contact mode during buckling becomes a concave arc in close contact with the rounded corner of the abutting surface, which further reduces the pressure of the elastic sealing member in the initial buckling stage.
[0039] In some embodiments of the utility model, annular sealing limiting strips 7 are arranged on the inner side of the box cover, and the annular sealing limiting strips 7 are arranged on the inner side of the upper inverted step part 311. The annular sealing limiting strips 7 help to prevent displacement of the first linear elastic sealing member 501.
[0040] In some embodiments of the utility model, the end face of the annular sealing limiting strip 7 can be an arc face.
[0041] The utility model discloses a hinge device 6 and a lock catch device 4 located on the opposite sides of the box body 2 and the box cover 1 are buckled against each other.
[0042] The box body 2 and the box cover 1 are structural members made of metal, engineering plastic or fiber reinforced resin matrix composite material.
[0043] The box body 2 and the box cover 1 are hingedly connected by metal or non-metal connecting members.
[0044] The material of the elastic sealing member 5 is rubber or silicone.
[0045] In recent years, continuous fiber reinforced resin matrix composite materials have been widely used in box products with sealing structure requirements in civil and military fields due to their light weight, high strength and designability. In the preparation and forming process of the sealing box, the lightweight reduction target of the overall structure of the sealing box can be achieved through reasonable layering structure design. In addition, according to the different connection modes of the box cover and the box, a reasonable sealing structure can be designed to be formed at one time in the forming process, so that the sealing property of the overall structure of the box is effectively guaranteed.
[0046] The sealing box can be processed by the following method:
[0047] The box cover 1 adopts continuous fibers, specifically glass fiber, carbon fiber, aramid fiber and the like to reinforce thermosetting resin matrix pre-impregnated material, aramid honeycomb core material or foam core material, which are stacked and laid according to the layering design on a metal mold to form a solid structure or a sandwich structure, and are cured and formed through a specific molding process. The compression structure is integrally formed with the box cover, and does not need subsequent machining treatment.
[0048] The box body 2 is formed by using continuous fibers, such as glass fibers, carbon fibers, aramid fibers and the like to reinforce a thermosetting resin-based prepreg, aramid honeycomb core material or foam core material, which is stacked and laid on a metal mold according to a layer design, and then is cured and formed by a specific molding process. The compression structure is integrally formed with the box body as a whole, and does not need subsequent machining treatment.
[0049] According to the designability of the fiber-reinforced resin-based composite material layer structure, the structural strength and lightweight design requirements of the product can be met at the same time. By designing and optimizing the sealing groove structure of the box cover and the box body, the sealing structure between the box cover and the box body can fully play its role after the box cover and the box body are connected through the folding page without affecting the opening and closing and use of the box cover. In extreme weather environment, the use reliability of the articles in the box body is effectively ensured. According to the integrated design of the functional structure of the fiber-reinforced resin-based composite material, the continuous fiber-reinforced composite material box body as a whole has excellent electromagnetic shielding effect and sealing property by adding shielding copper mesh or nickel mesh in the layer structure.
[0050] Embodiment 1
[0051] Referring to Figure 1 , Figure 1 It is a box body folding page (or hinge) type sealing structure demonstration example schematic diagram of the sealing structure. The box body sealing structure is composed of a box cover 1, a box body 2, a hinge device 6 and an elastic sealing piece 5. The box cover 1 and the box body 2 are fixedly connected through the hinge device 6, which is convenient for the opening and closing between the box cover 1 and the box body 2. The box cover 1 is processed with a sealing groove surrounded by an annular sealing limiting strip 7 and a lower inverted step side wall 322, which is used for the installation of the elastic sealing piece 5. After the box cover 1 and the box body 2 are closed, they are fixed through the lock catch device 4.
[0052] Referring to Figure 2 , Figure 2 It is a folding page (or hinge) connection fixed end sealing surface structure schematic diagram of the box body folding page (or hinge) type sealing structure. By designing and processing the sealing groove of the box cover 1 installed with the elastic sealing piece 5 region and the sealing end face of the box body 2 into a certain inclination angle (for example, the inclination angle 98 o ), the folding page (or hinge) connection fixed end sealing surface forms an angle matching surface, which will not cause the problem of poor sealing caused by the deformation of the elastic sealing piece 5 under the extrusion of the box cover 1.
[0053] The box cover 1 and the box body 2 are processed and formed as follows:
[0054] ①The metal mold is processed by using a low-expansion coefficient Invar steel, and the machining precision can guarantee the dimensional accuracy requirements of the box cover 1 and the box body 2. In addition, the sealing surface inclination angle design structure of the box cover 1 and the box body 2 can be machined in place at one time during the metal mold processing, so as to ensure that the box cover 1 and the box body 2 are directly assembled with other sealing parts after being formed.
[0055] ②On the metal mold, a continuous fiber (glass fiber, polyacrylonitrile carbon fiber, high-strength and high-thermal-conductivity mesophase pitch-based carbon fiber, aramid fiber, etc.) reinforced thermosetting (epoxy resin, phenolic resin, etc.) resin preform is selected, and after being stacked and laid according to a certain lay-up design, a release film, a breather fabric, a vacuum bag film, etc. are laid on the surface of the material to build a vacuum sealing system, and a continuous fiber reinforced resin matrix composite box cover 1 and a box cover 2 are prepared by curing and forming through a hot press tank forming process.
[0056] ③After the product is demolded, the appearance surface is in a uniform resin-rich layer state, and only the excess flash needs to be cleaned, without the need for machining post-processing procedures.
[0057] ④After the outer surface of the product is slightly polished and roughened, a coating layer (paint or polyurea) can be directly sprayed.
[0058] Example 2
[0059] Reference Figure 3 , Figure 3 is a schematic view of a fiber-reinforced composite box structure using the above-mentioned new type of folding (or hinge) sealing structure.
[0060] In this embodiment, there are two groups of elastic sealing members, respectively provided with a first elastic sealing member 501 and a second elastic sealing member 502, which are respectively installed in the sealing grooves formed by the annular sealing limiting strips 7 and the lower layer step portions 322 of the side walls, and the upper layer inverted step portions 311 of the bottom surfaces of the sealing grooves are pressed against the upper layer step portions 321 through the elastic sealing members 501.
[0061] Another sealing member is installed on the lower layer step portion of the L-shaped step structure, i.e., the lower layer step portion 312, and is pressed against the lower layer inverted step portion 322 on the box cover 1. In particular, the first round corner R1 between the lower layer inverted step portion 312 and the outer side wall of the box cover 1 is designed as a round corner.
[0062] The fiber-reinforced composite sealing box is composed of a box cover 1, a box body 2, a hinge device 6, a hook 8, a buckle member 9, and elastic sealing members 5. By assembling the fiber-reinforced composite box cover 1, the box body 2, and the hinge device 6, the buckle member 9, the first elastic sealing member 501, and the second elastic sealing member 502 according to the designed dimensions, a fiber-reinforced composite sealing box with double sealing layers, light weight, high strength, and high sealing performance can be realized.
[0063] The above merely illustrates the technical thought of the present application and cannot limit the protection scope of the present application, and any modification made on the basis of the technical scheme according to the technical thought of the present application falls within the protection scope of the present application.
Claims
1. A sealed box, characterized in that, It includes a lid (1), a body (2) and an elastic seal (5); the body (2) and the lid (1) are hinged together, the upper edge of the hinged end of the top of the body (2) is an L-shaped stepped structure, and the lower edge of the hinged end of the lid (1) is an inverted L-shaped stepped structure that matches the shape of the L-shaped stepped structure. The upper step (321) of the L-shaped stepped structure is inclined relative to the inner wall of the box towards the outer wall of the box, and the lower step (312) is inclined relative to the inner wall of the box towards the outer wall of the box; the lower inverted step (322) of the inverted L-shaped stepped structure is inclined relative to the inner wall of the box towards the outer wall of the box, and the upper inverted step (311) is inclined relative to the inner wall of the box towards the outer wall of the box; the upper step (321), the lower step (312), the lower inverted step (322), and the upper inverted step (311) are parallel to each other; A gap is formed between the L-shaped stepped structure and the steps opposite to the inverted L-shaped stepped structure for setting the elastic seal (5).
2. The sealed box according to claim 1, characterized in that, A first elastic seal (501) is provided in the gap between the upper step (321) and the upper inverted step (311).
3. The sealed box according to claim 2, characterized in that, A second elastic seal (502) is provided in the gap between the lower step (312) and the lower inverted step (322).
4. The sealed box according to any one of claims 1-3, characterized in that, The second rounded corner (R2) between the upper step (321) of the L-shaped stepped structure on the upper edge of the box body (2) and the step side wall is a rounded corner, and the first rounded corner (R1) between the lower inverted step (322) of the inverted L-shaped stepped structure on the edge of the box cover and the step side wall of the inverted L-shaped stepped structure is a rounded corner.
5. The sealed box according to any one of claims 1-3, characterized in that, An annular sealing limit strip (7) is provided on the inner side of the upper inverted step (311) relative to the outer edge of the box cover.
6. The sealed box according to claim 5, characterized in that, The end face of the annular sealing limit strip (7) is an arc surface.
7. The sealed box according to claim 1, characterized in that, The box body (2) and the box cover (1) are pressed together by hinge devices (6) and locking devices (4) provided on opposite sides.
8. The sealed box according to claim 1, characterized in that, The box (2) is a structural component made of metal, engineering plastic or fiber-reinforced resin matrix composite material.
9. The sealed box according to claim 1, characterized in that, The box cover (1) is a structural component made of metal, engineering plastic or fiber-reinforced resin matrix composite material.
10. The sealed box according to claim 1, characterized in that, The box body (2) and the box cover (1) are hinged by metal or non-metal connectors.
Citation Information
Patent Citations
Sealing structure of sealed case
CN202009556U