Overlapped double-cover-plate shell structure

Abstract

The utility model discloses an overlapping type double-cover-plate shell structure which is characterized in that the overlapping type double-cover-plate shell structure comprises a shell, an inner cover plate and an outer cover plate, the inner cover plate is fixedly connected with the shell through screws, the outer cover plate covers the inner cover plate and is fixedly connected with the shell through screws, a cavity is formed between the inner cover plate and the shell, and the inner cover plate is fixedly connected with the shell through screws. And mounting holes for fixing are formed in the edge of the shell. According to the utility model, the structure of the inner cover plate is optimized, so that the upper edge is tightened by means of the screw holes of the outer cover plate, thereby solving the problem of electromagnetic shielding of a compact module.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave product modules, in particular to an overlapping double-cover plate housing structure. Background Art

[0002] As a component unit of microwave systems, microwave product modules are widely used in the fields of communication and detection. According to their functional classification, they generally include amplification, switching, power division and combination, filtering, frequency conversion, etc. As an important component of microwave module products, the structural parts of microwave products are mainly responsible for accommodating microwave devices, realizing shielding, heat dissipation and other functions, and helping microwave modules to achieve specific microwave performance.

[0003] Due to the particularity of the use environment of microwave products, the structure of microwave products usually needs to be lightweight and compact. However, considering the limitations of mechanical screws in reality, the microwave shell usually cannot be made too small. For example, in some cases, in order to make the structure compact, the edge of the inner cover plate needs to be as close to the microwave microstrip line cavity as possible, which makes it impossible to arrange M1.6 screws. Generally speaking, M1.6 screws are the smallest specification screws commonly used in the field of microwave modules. The inability to arrange M1.6 screws leads to a decrease in electromagnetic shielding function, causing signal leakage and thus affecting module performance. Therefore, it is necessary to find a compact structure solution for microwave modules that breaks through the limitations of screws.

[0004] Therefore, it is necessary to provide an overlapping double cover housing structure to solve the above technical problems. Therefore, by optimizing the inner cover structure, the upper edge is tightened by means of the outer cover screw hole, thereby solving the problem of compact module electromagnetic shielding. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the technology to be solved by the present invention is the problem of compact module electromagnetic shielding.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an overlapping double-cover shell structure, characterized in that it includes a shell, an inner cover and an outer cover, the inner cover is fixedly connected to the shell by screws, the outer cover covers the inner cover and is fixedly connected to the shell by screws, a cavity is provided between the inner cover and the shell, and a mounting hole for fixing is provided at the edge of the shell.

[0008] As a preferred embodiment of the overlapping double-cover shell structure of the utility model, the shell is configured as a cavity with a closed bottom and an open top, and a plurality of screw holes are provided in the cavity.

[0009] As a preferred embodiment of the overlapping double-cover shell structure of the utility model, the cavity is divided into an inner cavity and an outer cavity. The edge of the outer cavity is provided with a raised baffle plate arranged around it, and the outer cover plate is adapted to the inner circumference of the raised baffle plate.

[0010] As a preferred embodiment of the overlapping double cover shell structure of the utility model, the inner cover is a double-layer component, a second step is formed on the protruding surface along the middle position of the inner cover, and a plurality of countersunk holes are provided on the surface of the second step.

[0011] As a preferred embodiment of the overlapping double cover plate housing structure of the utility model, a first step surface of the cover plate is provided with a plurality of countersunk holes, and the first step is matched with the inner peripheral wall of the inner cavity.

[0012] As a preferred embodiment of the overlapping double-cover shell structure of the utility model, the height of the baffle is consistent with the height of the outer cover.

[0013] As a preferred embodiment of the overlapping double cover plate housing structure of the utility model, a plurality of countersunk holes are provided on the upper surface of the outer cover plate.

[0014] As a preferred embodiment of the overlapping double-cover shell structure of the utility model, the countersunk holes on the upper surfaces of the inner cover and the outer cover correspond to the screw holes in the shell.

[0015] Beneficial effects of the utility model: The utility model provides an overlapping double-cover shell structure, which can optimize the inner cover structure so that the upper edge can be tightened with the help of the outer cover screw holes, thereby solving the problem of compact module electromagnetic shielding; multiple outer screws are arranged through the second step, which are installed on the outer cavity of the shell, so as to make up for the problem that the edge of the inner cavity of the shell is too close to the printed circuit board cavity and the screws cannot be arranged. The special structure of the outer cover just avoids the second step of the inner cover protrusion, and the screw holes arranged thereon can effectively tighten the entire cover, which not only achieves the effect of closing the inner cover to complete the electromagnetic shielding, but also blocks the excessive screw holes of the inner cover, making the module simple and beautiful in appearance. The utility model has a simple structure, is easy to manufacture, and has low cost, and can effectively break through the size restrictions of the built-in screws on the product structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 It is an overall schematic diagram of an overlapping double cover plate housing structure according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of the internal structure of an overlapping double cover plate housing structure according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of an inner cover plate of an overlapping double cover plate housing structure according to an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of an outer cover plate of an overlapping double cover plate shell structure described in an embodiment provided by the utility model.

[0021] Reference numerals: 101, housing; 102, inner cover; 103, outer cover; 104, mounting hole; 105, baffle; DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1

[0027] Reference Figure 1-4The first embodiment of the utility model is an overlapping double-cover shell structure, characterized in that it includes a shell 101, an inner cover 102 and an outer cover 103, wherein the inner cover 102 is fixedly connected to the shell 101 by screws, the outer cover 103 covers the inner cover 102 and is fixedly connected to the shell 101 by screws, a cavity is provided between the inner cover 102 and the shell 101, and a mounting hole 104 for fixing is provided at the edge of the shell 101. Specifically, the overall shape of the overlapping double-cover shell structure is a rectangular cube with a size of 30×22×12 (mm). There are 4 mounting holes 104 with a diameter of 2.5 mm at the edge of the shell 101, distributed around the shell 101. The structure of the shell 101 is a cavity with a closed bottom and an open top, and a plurality of screw holes are provided in the cavity. The inner cover 102 is a double-layer component, and the inner cover 102 has a second step formed on the protruding surface at the middle position along the upper edge, and a plurality of countersunk holes are provided on the second step surface. The cavity is divided into two types: inner cavity and outer cavity. A plurality of columnar screw holes are provided in the middle of the inner cavity. Countersunk holes for screws are provided on the first and second steps of the inner cover plate 102. Ten countersunk holes are provided on the first step and three countersunk holes are provided on the second step. The first step is adapted to the inner circumferential wall of the inner cavity, and the height of the second step is higher than that of the first step. A raised baffle 105 is provided at the edge of the outer cavity and is arranged all around. The outer cover plate 103 is adapted to the inner circumferential side of the baffle 105. The baffle 105 is at the same height as the second step and the outer cover plate 103. The upper surface of the second step and the outer cover plate 103 after installation is in the same horizontal plane as the height of the baffle 105. A plurality of countersunk holes are provided on the surface of the first step of the inner cover plate 102, and the first step is adapted to the inner circumferential wall of the inner cavity. An opening is provided on one side of the outer cover plate 103, the size of the opening is adapted to the size of the second step, a countersunk hole is provided on each side of the edge of the opening, and three countersunk holes are provided on the other side of the outer cover plate 103, and the inner cavity is inside the outer cavity. The inner cover plate 102 has a double-layer stepped structure, wherein the first layer of steps is for matching the inner cavity of the shell 101, and the second layer of steps is formed by the protruding surface along the middle position on the inner cover plate 102, which is installed on the outer cavity of the shell 101, so as to make up for the problem that the edge of the inner cavity of the shell 101 is too close to the printed circuit board cavity, resulting in the inability to arrange screws; the special structure of the outer cover plate 103 just avoids the raised second layer of steps of the inner cover plate 102, and the five countersunk holes on the surface of the outer cover plate 103 can effectively lock the entire cover plate, and the countersunk holes on the upper surfaces of the inner cover plate 102 and the outer cover plate 103 correspond to the screw holes in the shell, which not only achieves the effect of closing the inner cover plate to complete electromagnetic shielding, but also blocks the excessive screw holes of the inner cover plate, making the module simple and beautiful in appearance.

[0028] In summary, the utility model has a simple structure, is easy to manufacture, and has a low cost, and can effectively break through the size limitation of the built-in screws on the product structure, thereby solving the problem of electromagnetic shielding of a compact module.

[0029] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0031] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An overlapping double cover shell structure, characterized in that: The invention comprises a shell (101), an inner cover plate (102) and an outer cover plate (103); the inner cover plate (102) is fixedly connected to the shell (101) by means of screws; the outer cover plate (103) covers the inner cover plate (102) and is fixedly connected to the shell (101) by means of screws; a cavity is provided between the inner cover plate (102) and the shell (101); and a mounting hole (104) for fixing is provided at the edge of the shell (101).

2. The overlapping double cover plate housing structure according to claim 1, characterized in that: The housing (101) is configured as a cavity with a closed bottom and an open top, and a plurality of screw holes are provided in the cavity.

3. The overlapping double cover plate housing structure according to claim 2, characterized in that: The cavity is divided into an inner cavity and an outer cavity. A raised baffle (105) is provided at the edge of the outer cavity and is arranged around the periphery. The outer cover plate (103) is adapted to the inner circumference of the baffle (105).

4. The overlapping double cover plate housing structure according to claim 1, characterized in that: The inner cover plate (102) is a double-layer component, and a second step is formed on the protruding surface along the middle position of the inner cover plate, and a plurality of countersunk holes are provided on the surface of the second step.

5. The overlapping double cover plate housing structure according to claim 4, characterized in that: A plurality of countersunk holes are provided on the first step surface of the inner cover plate (102), and the first step is adapted to the inner peripheral wall of the inner cavity.

6. The overlapping double cover plate housing structure according to claim 3, characterized in that: The height of the baffle plate (105) is consistent with the height of the outer cover plate (103).

7. The overlapping double cover plate housing structure according to claim 6, characterized in that: A plurality of countersunk holes are provided on the upper surface of the outer cover plate (103).

8. The overlapping double cover plate housing structure according to claim 1, characterized in that: The countersunk holes on the upper surfaces of the inner cover plate (102) and the outer cover plate (103) correspond to the screw holes in the shell (101).

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