A wave-absorbing box door structure and a wave-absorbing box

Abstract

The utility model relates to a kind of wave-absorbing box door structure and wave-absorbing box, including two wave-absorbing box bodies with cooperation of box door, two box doors are towards the inner side of wave-absorbing box body and are equipped with wave-absorbing structure, wave-absorbing structure includes wave-absorbing cone and wave-absorbing plate;Wave-absorbing cone is arranged in the area outside the interference-avoiding area of the inner side wall of box door, and the interference-avoiding area is the edge region on the inner side wall of each box door close to another box door;Wave-absorbing plate is installed in the interference-avoiding area of two box doors.The utility model sets up wave-absorbing structure including wave-absorbing cone and wave-absorbing plate in the inner side wall of two box doors, and wave-absorbing cone is only arranged in the area outside the interference-avoiding area, and wave-absorbing plate is installed in interference-avoiding area, effectively solve the problem that wave-absorbing cone interference occurs in the process of opening box door in the wave-absorbing box door structure of existing double door, and wave-absorbing cone cutting processing is not needed, and special short wave-absorbing cone is not needed, simplify the machining process of wave-absorbing box door, reduce processing difficulty and cost.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic testing technology, specifically to a microwave absorbing box door structure and a microwave absorbing box. Background Technology

[0002] In the field of electromagnetic compatibility testing, the absorbing chamber, as a core facility simulating a reflection-free electromagnetic environment, directly affects the testing accuracy of electronic equipment, communication products, and other devices under test. These chambers, by lining their inner walls with absorbing material to create an electromagnetic shielding space, are widely used in various absorbing devices such as portable absorbing chambers and modular absorbing modules to meet the stringent requirements of international standards such as CISPR and IEC for radiated interference and immunity testing.

[0003] To facilitate the entry and operation of large equipment, double-door structures are widely used in the design of microwave absorbing boxes due to their convenient opening and high space utilization. However, existing double-door microwave absorbing box door structures have significant technical limitations: due to the large length of the absorbing cones, when the two doors are opened relative to each other along the hinge axis, the absorbing cones on the inner edge of the doors are prone to collision or interference.

[0004] To alleviate this problem, the industry typically employs machining the microwave-absorbing cones near the side edges of the enclosure door, or custom-made cones with shortened lengths. However, these approaches not only increase processing steps and material costs but also extend the production cycle. Utility Model Content

[0005] To address the problem of collision and interference between the absorbing cones on the inner edges of existing double-door absorbing box structures when the two doors are rotated open, this invention provides a absorbing box door structure and an absorbing box.

[0006] The technical solution of this utility model is as follows: An absorbing box door structure includes two doors that cooperate with an absorbing box body. One side of each door is hinged to the absorbing box body, and the two doors can rotate relative to each other at the hinge point to open or close in the middle. Both doors have absorbing structures on their inner sides facing the absorbing box body. The absorbing structures include absorbing cones and absorbing plates. The absorbing cones are located in the area outside the interference avoidance zone on the inner sidewall of the doors. The interference avoidance zone is the edge area on the inner sidewall of each door near the other door. The absorbing plates are installed in the interference avoidance zone of both doors.

[0007] As a preferred embodiment of this utility model, the wave-absorbing plate is a long strip plate, and the coverage area of ​​the wave-absorbing plate on the inner side wall of the box door corresponds to the installation area of ​​one or two longitudinal rows of wave-absorbing cones.

[0008] As a preferred embodiment of this utility model, the material of the absorbing plate is silicon carbide.

[0009] As a preferred embodiment of this utility model, the bottom side of the absorbing plate is provided with a strip groove along the length of the plate, and the inner side wall of the box door is provided with a slide rail in the interference avoidance area. The absorbing plate is slidably connected to the slide rail through the strip groove at its bottom, so as to slidably install the absorbing plate in the interference avoidance area.

[0010] As a preferred embodiment of this utility model, each of the microwave absorbing cones is independently installed in the slide rail on the inner side wall of the box door; or, Several of the aforementioned absorbing cones are integrated into a rectangular absorbing module, and are installed as a whole on the inner side wall of the enclosure door along with the rectangular absorbing module.

[0011] As a preferred embodiment of this utility model, the bottom side of the absorbing cone is provided with a strip groove, and the inner side wall of the box door, excluding the interference avoidance zone, is provided with multiple rows of parallel slide rails. The groove structure of the slide rails is adapted to the bottom of the absorbing cone, and multiple absorbing cones are installed on each row of the slide rails.

[0012] Furthermore, the inner sidewall of the enclosure door, excluding the interference avoidance zone, is provided with multiple rectangular snap-fit ​​slots. Each rectangular snap-fit ​​slot is equipped with a detachable rectangular absorbing module, and the rectangular absorbing module is provided with an array of several absorbing cones.

[0013] As a preferred embodiment of this utility model, the absorbing cone is a rectangular cone or a circular cone.

[0014] As a preferred embodiment of this utility model, a door handle is provided on the outer side wall of the box door near the edge area of ​​the other box door.

[0015] This utility model also provides a microwave absorbing box, including a microwave absorbing box body and a microwave absorbing box door structure as described above. When the two doors of the microwave absorbing box door structure are closed, they together with the microwave absorbing box body form a sealed microwave absorbing space.

[0016] The advantages of this utility model based on the above solution are as follows: This utility model solves the problem of interference caused by the long length of the inner absorbing cone in the existing double-door absorbing box structure during the opening of the box. It provides an absorbing structure with absorbing cones and absorbing plates on the inner side walls of the two boxes, and places the absorbing cones only in the area outside the interference avoidance zone and the absorbing plates are installed in the interference avoidance zone. It eliminates the need to cut the absorbing cones near the side edge of the box and to make shorter absorbing cones, which greatly simplifies the processing of the absorbing box door and reduces the processing difficulty and cost. This invention utilizes the absorption plate and the absorption cone to form a complete absorption structure, which avoids the formation of a blind zone due to the setting of the interference avoidance zone, and can continuously and stably perform the absorption function, ensuring the overall electromagnetic absorption performance of the existing absorption box. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the inner wall structure of the cabinet door in this utility model; Figure 2 This is a front view of the inner wall of the box door; Figure 3 This is an exploded view of the box door structure; Figure 4 This is a schematic diagram of the installation structure of the wave-absorbing plate; Figure 5 This is a schematic diagram of the installation structure of the microwave absorbing cone; Figure 6 This is an exploded view of the rectangular absorbing module. Figure 7 This is a schematic diagram of the structure of the microwave absorbing box in this utility model.

[0018] In the diagram, 1. Box door; 11. Door handle; 2. Absorbing cone; 3. Absorbing plate; 4. Base plate; 5. Absorbing box body; 61. Slide rail; 62. Strip groove. Detailed Implementation

[0019] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0020] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0021] The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. The term "several" means two or more, unless otherwise expressly and specifically defined.

[0022] like Figures 1 to 3 As shown, an absorbing box door structure includes two doors 1 that cooperate with an absorbing box body 5. One side of each door 1 is hinged to the absorbing box body 5, and the two doors 1 can rotate relative to each other along the hinge point to open or close in the middle. Both doors 1 have absorbing structures on their inner sides facing the absorbing box body 5. The absorbing structures include absorbing cones 2 and absorbing plates 3. The absorbing cones 2 are located in areas outside the interference avoidance zone on the inner sidewall of each door 1. The interference avoidance zone is the edge area on the inner sidewall of each door 1 near the other door 1. The absorbing plates 3 are installed in the interference avoidance zone of both doors 1. The absorbing cones 2 are rectangular cones or conical cones.

[0023] This invention addresses the motion trajectory characteristics of two hinged cabinet doors 1 as they rotate along the hinge. It defines the edge region on the inner wall of each door 1 near the other door 1 as an interference avoidance zone. The absorbing cones 2 in this zone are critical areas where collisions can occur during the opening of the two doors. Therefore, the absorbing cones 2 are eliminated in this zone, and instead, absorbing plates 3 are installed, directly cutting off the possibility of interference. Simultaneously, the absorbing cones 2 on the inner wall of the door 1 are only placed outside the interference avoidance zone. Thus, this invention eliminates the need for cutting the absorbing cones 2 at the edge of the door 1 as in traditional methods, and also eliminates the need for custom-made, shorter absorbing cones 2, significantly simplifying the processing flow and reducing material waste and processing costs caused by cutting operations. In addition, the design structure of this utility model is highly compatible with the existing absorbing box housing 5. The installation of the absorbing cone 2 can follow the existing mature structure. The installation of the absorbing plate 3 does not require modification of the basic structure of the box door 1. The installation method of the absorbing plate 3 and the absorbing cone 2 is consistent. It has strong practical application value and can be quickly integrated into the existing absorbing box production and modification system.

[0024] In this embodiment, the absorbing plate 3 is a long strip, and the coverage area of ​​the absorbing plate 3 on the inner wall of the door 1 corresponds to the installation area of ​​one or two longitudinal rows of absorbing cones 2. The long strip covering this area can completely cut off the possibility of collision of the absorbing cones 2 without excessively expanding the interference avoidance zone. Since the absorbing cones 2 need to be evenly arranged along the length direction (lateral) and height direction (longitudinal) of the inner wall of the door 1, "longitudinal row" refers to the arrangement of absorbing cones 2 extending along the height direction of the door 1. Each row of absorbing cones 2 is arranged sequentially from top to bottom along the height direction of the door 1, and the rows are evenly spaced along the lateral direction of the door 1. The coverage area of ​​the absorbing plate 3 corresponds to the installation area of ​​one or two columns of absorbing cones 2. This means that the size (lateral width and longitudinal length) of the absorbing plate 3 is perfectly matched with the installation space of one or two columns of absorbing cones 2. Specifically, the lateral width of the absorbing plate 3 is exactly equal to the width occupied by one or two columns of absorbing cones 2 in the lateral direction of the door 1. The longitudinal length of the absorbing plate 3 is consistent with the height direction of the door 1, or the longitudinal length of the absorbing plate 3 covers the complete arrangement length of the column of absorbing cones 2 from the top to the bottom of the door 1. This allows the long plate to accurately fill the space originally used to install one or two columns of absorbing cones 2, and its installation position is consistent with the arrangement rhythm of the surrounding absorbing cones 2. There is no need to make additional adjustments to the basic installation structure of the inner wall of the door 1, such as the preset slide or module installation position.

[0025] In this embodiment, the material of the absorbing plate 3 is silicon carbide, and its absorption efficiency can be effectively matched with the performance of the absorbing cone 2 in the non-interference avoidance area of ​​the door 1, so as to avoid the occurrence of absorption blind zone or absorption efficiency decay in the interference avoidance area due to insufficient material performance of the absorbing plate 3.

[0026] like Figure 4 As shown, in this embodiment, the bottom side of the absorbing plate 3 is provided with a strip groove 62 along the length direction of the plate, and the inner sidewall of the door 1 is provided with a slide rail 61 in the interference avoidance area. The absorbing plate 3 is slidably connected to the slide rail 61 through the strip groove 62 at its bottom to slide the absorbing plate 3 in the interference avoidance area. The strip groove 62 is formed on the bottom side of the absorbing plate 3 along its length direction (i.e., the direction consistent with the height direction of the door 1) to ensure that the cross-sectional shape of the groove is completely matched with the slide rail 61 preset in the interference avoidance area of ​​the door 1. The slide rail 61 is pre-fixed to the interference avoidance area of ​​the inner sidewall of the door 1, with its opening facing the side of the absorbing plate 3, and the extension direction of the slide rail is also consistent with the height direction of the door 1, corresponding to the length direction of the absorbing plate 3. During installation, the operator only needs to align the strip groove 62 at the bottom of the absorbing plate 3 with the opening of the slide rail 61, and push the absorbing plate 3 along the length of the slide rail (from top to bottom or from bottom to top) so that the strip groove 62 is fully embedded in the groove cavity of the slide rail 61 until the absorbing plate 3 slides to the preset position, thus completing the installation and fixing of the absorbing plate 3 in the interference avoidance zone.

[0027] The absorbing plate 3 can be assembled simply by pushing it along the slide rail, simplifying the operation and significantly improving installation efficiency. Furthermore, if the absorbing plate 3 is damaged or its performance degrades, it can be directly slid out of the slide rail 61 for replacement without disassembling other components of the enclosure door 1, and without damaging the inner wall of the enclosure door 1 or the surrounding absorbing cones 2, thus reducing maintenance costs and operational difficulty. In addition, the sliding connection method of the absorbing plate 3 is consistent with the slide rail installation method of the absorbing cones 2, and the processing of the slide rail on the inner wall of the enclosure door 1 can use mature technology, eliminating the need to redesign or modify the overall structure of the enclosure door 1. This reduces manufacturing costs and facilitates the adaptation of the absorbing enclosure door structure to existing absorbing boxes.

[0028] like Figure 5 As shown, in one optional embodiment, each absorbing cone 2 is independently installed in a slide rail on the inner side wall of the enclosure door 1. Specifically, the bottom side of the absorbing cone 2 is provided with a strip groove 62, and the inner side wall of the enclosure door 1, excluding the interference avoidance area, is provided with multiple rows of parallel slide rails 61. The groove structure of the slide rails 61 is adapted to the bottom of the absorbing cone 2, and multiple absorbing cones 2 are installed on each row of slide rails 61. To meet the requirement of independent installation of each absorbing cone 2, a strip groove 62 is machined into the bottom side of the absorbing cone 2. Its cross-sectional shape and size are perfectly matched with the slide rails 61 preset on the inner side wall of the enclosure door 1, ensuring that the groove can be stably embedded in the slide rail cavity. At the same time, in the area of ​​the inner side wall of the enclosure door 1, excluding the interference avoidance area, multiple rows of parallel slide rails 61 are arranged along the length direction (lateral direction) of the enclosure door 1. The spacing between the rows is set according to the requirement of uniform arrangement of the absorbing cones 2.

[0029] During installation, the operator aligns the bottom groove 62 of a single absorbing cone 2 with the opening of the corresponding slide rail 61, and pushes the absorbing cone 2 longitudinally (from top to bottom or bottom to top) along the slide rail until the cone slides to the preset position. Multiple rows of side-by-side slide rails 61 provide a fixed mounting track for the absorbing cones 2, allowing the cones in each row to be evenly distributed longitudinally, and the spacing between rows is precisely controlled by the preset position of the slide rail. Furthermore, the slide rails 61 and the slide rails 61 of the absorbing plate 3 are manufactured using the same process, facilitating production and saving costs.

[0030] like Figure 6As shown, in another optional embodiment, several absorbing cones 2 are integrated into a rectangular absorbing module and are installed on the inner wall of the door 1 along with the rectangular absorbing module. Specifically, the inner wall of the door 1, excluding the interference avoidance area, is provided with multiple rectangular snap-fit ​​slots. Each rectangular snap-fit ​​slot is equipped with a detachable rectangular absorbing module, and the rectangular absorbing module is provided with several absorbing cones 2 arranged in an array. The rectangular absorbing module includes an aluminum profile base plate 4 at the bottom and several absorbing cones 2 above the base plate 4; similarly, the base plate 4 is provided with several parallel slide rails 61. During installation, the operator first aligns the bottom strip groove 62 of a single absorbing cone 2 with the slide rail 61 on the base plate 4, and pushes the absorbing cone 2 along the length of the slide rail, so that the absorbing cones 2 are inserted into the slide rail one by one and evenly arranged until the entire base plate 4 is filled with absorbing cones 2, forming a complete rectangular absorbing module; then the base plate 4 is aligned with the corresponding rectangular snap-fit ​​slot, and the rectangular absorbing module is fixed by a plug-in snap-fit.

[0031] In this embodiment, a door handle 11 is provided on the outer side wall of the cabinet door 1 near the edge of the other cabinet door 1. Since the two cabinet doors 1 are hinged in the middle, the door handle 11 is designed to be the position that is easiest for the operator to reach and requires the least effort when opening and closing the doors.

[0032] like Figure 7 As shown, this utility model also provides an absorbing box, including an absorbing box body 5. The top and bottom inner walls and three side walls of the absorbing box body 5 are all provided with absorbing material, which can also be an absorbing cone 2. It also includes an absorbing box door structure as described above. When the two doors 1 are rotated relative to each other at the hinge to the closed state, the edge of the door 1 is tightly fitted with the edge of the box opening. The absorbing structure of the inner side wall of the door 1 is seamlessly connected with the absorbing material of the inner wall of the box, together forming a sealed absorbing space with no absorbing blind zone and electromagnetic shielding performance meeting the standards.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A microwave absorbing box door structure, comprising two doors that cooperate with a microwave absorbing box body, wherein one side of each of the two doors is hinged to the microwave absorbing box body, and the two doors can rotate relative to each other along the hinge point to open or close in the middle, characterized in that, Both of the box doors facing the inner side of the absorbing box body are provided with absorbing structures, the absorbing structures including absorbing cones and absorbing plates; The absorbing cones are arranged in the area outside the interference avoidance zone on the inner sidewall of the cabinet door. The interference avoidance zone is the edge area on the inner sidewall of each cabinet door near the other cabinet door. The absorbing plate is installed in the interference avoidance zone of the two doors.

2. The microwave absorbing box door structure according to claim 1, characterized in that, The absorbing plate is a long strip, and the coverage area of ​​the absorbing plate on the inner wall of the cabinet door corresponds to the installation area of ​​one or two longitudinal rows of absorbing cones.

3. The microwave absorbing box door structure according to claim 1, characterized in that, The material of the absorbing plate is silicon carbide.

4. The microwave absorbing box door structure according to claim 1, characterized in that, The bottom side of the absorbing plate has a strip groove along its length, and the inner side wall of the box door has a slide rail in the interference avoidance area. The absorbing plate is slidably connected to the slide rail through the strip groove at its bottom so as to slide the absorbing plate in the interference avoidance area.

5. The microwave absorbing box door structure according to claim 1, characterized in that, Each of the aforementioned absorbing cones is independently installed in a slide rail on the inner side wall of the enclosure door; or, Several of the aforementioned absorbing cones are integrated into a rectangular absorbing module, and are installed as a whole on the inner side wall of the enclosure door along with the rectangular absorbing module.

6. The microwave absorbing box door structure according to claim 1, characterized in that, The bottom side of the absorbing cone is provided with a strip groove, and the inner side wall of the box door, excluding the interference avoidance zone, is provided with multiple rows of parallel slide rails. The groove structure of the slide rails is adapted to the bottom of the absorbing cone, and multiple absorbing cones are installed on each row of the slide rails.

7. The microwave absorbing box door structure according to claim 5, characterized in that, The inner sidewall of the enclosure door, excluding the interference avoidance zone, is provided with multiple rectangular snap-fit ​​slots. Each rectangular snap-fit ​​slot is equipped with a detachable rectangular absorbing module, and the rectangular absorbing module is provided with several absorbing cones arranged in an array.

8. The microwave absorbing box door structure according to claim 1, characterized in that, The absorbing cone is a rectangular cone or a circular cone.

9. The microwave absorbing box door structure according to claim 1, characterized in that, A door handle is provided on the outer wall of the box door near the edge of the other box door.

10. A microwave absorbing box, characterized in that, It includes an absorbing box housing and an absorbing box door structure as described in any one of claims 1 to 9, wherein when the two doors of the absorbing box door structure are closed, they together with the absorbing box housing to form a sealed absorbing space.

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