Electromagnetic shielded housing for mobile communication devices

Abstract

The utility model discloses a kind of electromagnetic shielding shell for mobile communication equipment, it is related to shielding shell technical field, comprising: first shell, one side detachably connected with second shell;A plurality of bearing blocks, symmetrically fixed to the inner wall of the first shell and the second shell, recessed area is equipped in the bearing surface middle part of the bearing block;A plurality of splicing rings, inside the first shell and the second shell are equipped, the inner wall of the splicing ring and the second shell is fixedly connected;When the first shell is spliced with the second shell, the splicing ring of protruding splicing surface is contacted first and moves downward, lever is swung in the recessed area of bearing block, the distal end of lever is upturned and is supported on the lower surface of half magnetic ring, dynamic support to half magnetic ring middle part is realized, ensure that two half magnetic rings are closely adhered, avoid the gap due to far from fixed point, to significantly improve the reliability of electromagnetic shielding.

Description

Technical Field

[0001] This utility model relates to the field of shielding housing technology, specifically to an electromagnetic shielding housing for mobile communication equipment. Background Technology

[0002] In existing electromagnetic shielding housings for mobile communication equipment, a split-type semi-magnetic ring structure is typically used. This involves mounting two semi-magnetic rings on the support blocks of the first and second housings, respectively. After the housings are closed, the two rings are joined to form a complete annular cavity, thus achieving electromagnetic shielding for the communication cables. To buffer assembly stress and ensure a close fit, an elastic element, such as a compression spring or sheet, is generally provided between the semi-magnetic ring and the support block.

[0003] However, this type of structure has the following drawbacks in practical applications: the fixing points of the semi-magnetic rings are usually located at the edges of the splicing surfaces of the housing or at both ends of the load-bearing blocks. When the housing is closed, the deformation compensation effect of the elastic element is mainly concentrated near the fixing points, while the central region of the semi-magnetic rings, far from the fixing points, lacks sufficient support and is susceptible to the effects of gravity, uneven deformation of the elastic element, or housing machining tolerances, resulting in a gap between the two semi-magnetic rings in the middle. This gap disrupts the continuity of magnetic shielding, causing electromagnetic leakage and significantly reducing shielding effectiveness. Especially in high-frequency electromagnetic interference environments, this defect poses a serious threat to the signal integrity of communication equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electromagnetic shielding housing for mobile communication devices.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An electromagnetic shielding housing for a mobile communication device, comprising:

[0007] The first housing has a second housing detachably connected to one side;

[0008] Several bearing blocks are symmetrically fixed to the inner walls of the first shell and the second shell, and a recessed area is provided in the middle of the bearing surface of each bearing block;

[0009] Several splicing rings are disposed inside the first housing and the second housing. The splicing rings are fixedly connected to the inner wall of the second housing and are radially and vertically connected to the first housing.

[0010] A pair of half-magnetic rings are elastically connected to the bearing surfaces of the bearing blocks on the first housing and the second housing. The pair of half-magnetic rings are spliced ​​together to form an electromagnetic shielding cavity for accommodating communication cables.

[0011] At least one lever is fixed to the bottom end of the splicing ring on the first housing and extends through the recessed area to the lower surface of the semi-magnetic ring, the fulcrum of the lever being located within the recessed area of ​​the bearing block;

[0012] Wherein, the initial height of the splicing ring inside the first housing is higher than the splicing surface of the first housing, and the initial height of the splicing ring inside the second housing is at least flush with the splicing surface of the second housing;

[0013] After the first housing and the second housing are spliced ​​together, the splicing ring inside the second housing can squeeze the splicing ring inside the first housing to move downward. The downward movement of the splicing ring can drive the lever to move downward at the end away from the semi-magnetic ring and upward at the end close to the middle of the semi-magnetic ring.

[0014] Preferred options also include:

[0015] At least one first through groove is formed on the inner wall of the splicing ring;

[0016] At least one second passageway is provided at the ends of the first housing and the second housing;

[0017] The lever is clearance-fitted with the recessed area, and the recessed area outside the lever forms an axial heat dissipation channel with the first through groove and the second through groove.

[0018] Preferably, multiple first and second through slots are provided circumferentially, and the multiple first and second through slots form a circumferential rotation limiting structure for the communication cable.

[0019] Preferably, the semi-magnetic ring is connected to the bearing surface of the bearing block by an elastic element, which is a compression spring, a sheet, or a rubber pad.

[0020] Preferably, the lever has a rectangular or T-shaped cross-section, and one end of the lever near the middle of the semi-magnetic ring has an arc-shaped support surface that matches the lower surface of the semi-magnetic ring.

[0021] Preferably, the first housing and the second housing are connected by bolts, and the bolt sleeves are located at the four corners of the semi-magnetic ring. The bolt sleeves intersect the semi-magnetic ring in the axial direction to form an axial limiting structure for the semi-magnetic ring.

[0022] Preferably, the recessed area of ​​the support block is provided with a pivot groove or arc-shaped guide surface corresponding to the fulcrum position of the lever, and the lever and the recessed area of ​​the support block form a swing engagement.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. When the first shell and the second shell are spliced ​​together, the splicing ring protruding from the splicing surface makes contact and moves down first, causing the lever to swing in the recessed area of ​​the bearing block. This causes the far end of the lever to tilt upward and press against the lower surface of the half magnetic ring, thus achieving dynamic support for the middle of the half magnetic ring. This ensures that the two half magnetic rings fit tightly together and avoids gaps caused by distance from the fixed point, thereby significantly improving the reliability of electromagnetic shielding.

[0025] 2. By opening a first through groove on the inner wall of the splicing ring and a second through groove at the ends of the first and second housings, and by utilizing the gap fit between the lever and the recessed area of ​​the bearing block, these structures are interconnected to form a heat dissipation channel, which effectively dissipates the heat inside the housing and solves the heat dissipation problem when the communication cable is working. Attached Figure Description

[0026] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the electromagnetic shielding shell for mobile communication equipment according to this utility model;

[0028] Figure 2 This is a front view of the electromagnetic shielding housing for mobile communication equipment according to this utility model;

[0029] Figure 3 This utility model relates to an electromagnetic shielding housing for mobile communication devices. Figure 2 A schematic diagram of the 3D structure in AA cross-section;

[0030] Figure 4 This utility model relates to an electromagnetic shielding housing for mobile communication devices. Figure 2 BB section view in the middle;

[0031] Figure 5 This is a side view of the electromagnetic shielding housing for mobile communication equipment according to this utility model;

[0032] Figure 6 This utility model relates to an electromagnetic shielding housing for mobile communication devices. Figure 5 CC cross-sectional 3D structural schematic diagram;

[0033] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the electromagnetic shielding shell for mobile communication equipment according to this utility model.

[0034] The diagram is labeled as follows: 1. First housing; 2. Second housing; 3. Bearing block; 4. Splicing ring; 5. Semi-magnetic ring; 6. Lever; 7. First through groove; 8. Second through groove. Detailed Implementation

[0035] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0036] Example 1

[0037] like Figure 1-6 As shown, an electromagnetic shielding housing for a mobile communication device includes a first housing 1, a second housing 2, a support block 3, a splicing ring 4, a semi-magnetic ring 5, and a lever 6.

[0038] The first housing 1 and the second housing 2 are detachably connected, for example by snap-fit ​​or bolts, together forming an enclosed space to accommodate the communication cable interface. Multiple support blocks 3 are symmetrically fixed to the inner walls of the first housing 1 and the second housing 2. The support blocks 3 have a roughly annular structure and are used to support and mount the semi-magnetic ring 5. A recessed area is provided in the center of their bearing surface, providing space for the installation and movement of the lever 6.

[0039] The splicing ring 4 is disposed inside the first housing 1 and the second housing 2. Specifically, the splicing ring 4 located inside the second housing 2 is fixedly connected to the inner wall of the second housing 2, while the splicing ring 4 located inside the first housing 1 is a movable component, with a lever 6 fixedly connected to its bottom end. The lever 6 extends axially from the bottom end of the splicing ring 4, passes through the recessed area in the middle of the support block 3, and finally extends to the lower surface of the semi-magnetic ring 5. The fulcrum of the lever 6 is located in the recessed area of ​​the support block 3, allowing the lever 6 to swing around the fulcrum. The interior of the first housing 1 is provided with a guide groove (not shown in the figure) for the splicing ring 4 to slide radially. The middle of the lever 6 is provided with a convex shaft or arc-shaped surface, and the support block 3 is provided with a rotating shaft groove or arc-shaped guide surface that matches the convex shaft or arc-shaped surface.

[0040] The semi-magnetic rings 5 ​​are arranged in pairs and connected to the bearing surfaces of the bearing blocks 3 of the first housing 1 and the second housing 2 respectively by elastic elements (such as compression springs, spring sheets, or rubber pads, not shown in the figure). One end of the elastic element is fixed to the bearing surface of the bearing block 3, and the other end is fixed to the surface of the semi-magnetic ring 5. When the first housing 1 and the second housing 2 are closed, the two semi-magnetic rings 5 ​​are spliced ​​to form a complete annular cavity, which is used to wrap and shield the communication cables passing through it. In the initial state, the height of the splicing ring 4 in the first housing 1 is higher than the splicing surface of the first housing 1 (i.e., the plane in contact with the second housing 2), while the height of the splicing ring 4 in the second housing 2 is at least flush with the splicing surface of the second housing 2.

[0041] Its working principle is as follows: When the first housing 1 and the second housing 2 are spliced ​​together, the splicing surface of the second housing 2 gradually approaches the splicing surface of the first housing 1. Since the splicing ring 4 inside the first housing 1 protrudes from its splicing surface, the splicing ring 4 inside the second housing 2 will first contact the splicing ring 4 inside the first housing 1 and apply downward pressure to it. As the splicing process continues, the splicing ring 4 inside the first housing 1 is pressed downward. The downward movement of the splicing ring 4 causes the distal end of the lever 6 at its bottom end (i.e., the end away from the semi-magnetic ring 5) to move downward as well. According to the lever principle, the fulcrum of the lever 6 is located in the concave area, so the proximal end of the lever 6 (i.e., the end closer to the middle of the semi-magnetic ring 5) will correspondingly tilt upward. The upward-curving lever 6 presses against the lower surface of the semi-magnetic ring 5, forming an upward supporting force on the middle of the semi-magnetic ring 5. This compensates for the deformation of the elastic element or the influence of the weight of the semi-magnetic ring 5 itself, ensuring that the two semi-magnetic rings 5 ​​can fit tightly together to form a reliable electromagnetic shielding cavity. This allows the middle of the semi-magnetic ring 5, which is far from the fixing point of the first housing 1 and the second housing 2, to be supported, thereby preventing gaps in the semi-magnetic ring 5 far from the fixing point from causing magnetic shielding failure.

[0042] Example 2

[0043] Please refer to further details. Figure 3 , Figure 4 , Figure 6 and Figure 7 This embodiment is an optimization based on Embodiment 1. The electromagnetic shielding housing also includes at least one first through groove 7 and at least one second through groove 8. The first through groove 7 is formed on the inner wall of the splicing ring 4, and the second through groove 8 is formed at the ends of the first housing 1 and the second housing 2. The lever 6 and the recessed area of ​​the bearing block 3 are in clearance fit, that is, there is a gap between them. In this way, the recessed area outside the lever 6, the first through groove 7, and the second through groove 8 are interconnected, forming a heat dissipation channel extending axially from the inside of the housing (at the half magnetic ring 5) to the outside. This channel helps to dissipate the heat generated when the communication cable is working.

[0044] Preferably, the first through slot 7 and the second through slot 8 are provided in multiple circumferential directions. These circumferentially distributed slots not only increase the heat dissipation area, but also allow the edges of multiple slots to form multiple points of contact or limit the cable surface when the communication cable passes through, thereby limiting the circumferential rotation of the communication cable, preventing the cable from twisting during use, and improving the stability of the connection.

[0045] Example 3

[0046] This embodiment further defines the specific structure in the above embodiments, such as... Figure 7As shown in the figure (not marked), the cross-sectional shape of lever 6 can be rectangular or T-shaped to enhance its bending strength. One end of lever 6 near the center of the semi-magnetic ring 5 has an arc-shaped support surface that matches the lower surface of the semi-magnetic ring 5. This arc-shaped support surface can better fit the arc-shaped surface of the semi-magnetic ring 5, providing stable and uniform support force and avoiding point contact or stress concentration.

[0047] Furthermore, when the first housing 1 and the second housing 2 are connected by bolts, the bolt sleeves can be positioned at the four corners of the semi-magnetic ring 5. The bolt sleeves intersect the semi-magnetic ring 5 axially. This design allows the bolt sleeves to not only connect the housings but also serve as an axial limiting structure for the semi-magnetic ring 5, restricting excessive axial movement and further ensuring the stability of the shielding structure.

[0048] To optimize the swing performance of lever 6, a pivot groove or arc-shaped guide surface corresponding to the fulcrum position of lever 6 is provided in the recessed area of ​​the bearing block 3. The fulcrum part of lever 6 cooperates with the pivot groove or arc-shaped guide surface, so that lever 6 can swing stably and smoothly in the recessed area, avoiding lateral deviation or jamming of lever 6 during movement.

[0049] In summary, the electromagnetic shielding housing for mobile communication equipment provided by this utility model integrates buffering during the housing splicing process, dynamic support for shielding components, and heat dissipation and limiting functions through a clever mechanical linkage structure. This effectively improves the reliability and stability of electromagnetic shielding and the overall heat dissipation performance of the equipment, and has high practical value and broad application prospects.

[0050] When the first housing 1 and the second housing 2 are spliced ​​together, the splicing ring 4 protruding from the splicing surface makes contact and moves downward first, causing the lever 6 to swing in the recessed area of ​​the bearing block 3. This causes the far end of the lever 6 to tilt upward and press against the lower surface of the half magnetic ring 5, achieving dynamic support for the middle of the half magnetic ring 5. This effectively compensates for the deformation of the elastic element or the influence of gravity, ensuring that the two half magnetic rings 5 ​​fit tightly together and avoiding gaps caused by being far from the fixed point, thereby significantly improving the reliability of electromagnetic shielding.

[0051] By opening a first through groove 7 on the inner wall of the splicing ring 4 and opening a second through groove 8 at the ends of the first housing 1 and the second housing 2, and by utilizing the gap fit between the lever 6 and the recessed area of ​​the bearing block 3, these structures are interconnected to form a heat dissipation channel, thereby achieving effective heat dissipation inside the housing and solving the heat dissipation problem when the communication cable is working.

[0052] By opening multiple first through slots 7 and second through slots 8 along the circumference, the edges of the slots form multiple points of contact or limit with the cable surface when the communication cable passes through, thereby realizing the circumferential rotation limit of the communication cable, effectively preventing the cable from twisting during use, and improving the stability of the connection.

[0053] By placing the bolt sleeves at the four corners of the semi-magnetic ring 5 and making the bolt sleeves intersect the semi-magnetic ring 5 in the axial direction, the bolt sleeves not only connect to the housing but also serve as an axial limiting structure for the semi-magnetic ring 5, thereby limiting excessive axial movement of the semi-magnetic ring 5 and further ensuring the stability of the shielding structure.

[0054] By setting the cross-sectional shape of lever 6 to rectangular or T-shaped, its bending strength is enhanced; by setting an arc-shaped support surface that matches the lower surface of the semi-magnetic ring 5 at one end of lever 6 near the middle of the semi-magnetic ring 5, stable and uniform support for the semi-magnetic ring 5 is achieved, avoiding point contact or stress concentration; by setting a rotating shaft groove or arc-shaped guide surface in the recessed area of ​​the bearing block 3 to cooperate with the fulcrum of lever 6, stable and smooth swing of lever 6 is achieved, avoiding lateral offset or jamming, and optimizing the swing performance of lever 6.

[0055] Structures such as elastic elements and shaft grooves mentioned in the specification that are not shown in the accompanying drawings are all existing known technologies and therefore are not marked in detail, but this does not affect the understanding of those skilled in the art.

[0056] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An electromagnetic shielding housing for a mobile communication device, characterized in that, include: The first housing (1) has a second housing (2) detachably connected to one side. Several bearing blocks (3) are symmetrically fixed to the inner walls of the first shell (1) and the second shell (2), and the bearing surface of the bearing block (3) is provided with a recessed area in the middle; Several splicing rings (4) are disposed inside the first housing (1) and the second housing (2). The splicing rings (4) are fixedly connected to the inner wall of the second housing (2) and are radially raised and lowered to the first housing (1). A pair of half magnetic rings (5) are elastically connected to the bearing surface of the bearing block (3) on the first housing (1) and the second housing (2). The pair of half magnetic rings (5) are spliced ​​together to form an electromagnetic shielding cavity for accommodating communication cables. At least one lever (6) is fixed to the bottom end of the splicing ring (4) on the first housing (1) and extends through the recessed area to the lower surface of the semi-magnetic ring (5), with the fulcrum of the lever (6) located in the recessed area of ​​the bearing block (3). Wherein, the initial height of the splicing ring (4) inside the first housing (1) is higher than the splicing surface of the first housing (1), and the initial height of the splicing ring (4) inside the second housing (2) is at least flush with the splicing surface of the second housing (2); After the first housing (1) and the second housing (2) are spliced ​​together, the splicing ring (4) inside the second housing (2) can squeeze the splicing ring (4) inside the first housing (1) to move down. The downward movement of the splicing ring (4) can drive the lever (6) to move down at one end away from the semi-magnetic ring (5) and up at one end close to the middle of the semi-magnetic ring (5).

2. The electromagnetic shielding housing for a mobile communication device according to claim 1, characterized in that: Also includes: At least one first through groove (7) is formed on the inner wall of the splicing ring (4); At least one second through groove (8) is provided at the ends of the first housing (1) and the second housing (2); The lever (6) is clearance-fitted with the recessed area, and the recessed area outside the lever (6) forms an axial heat dissipation channel with the first through groove (7) and the second through groove (8).

3. The electromagnetic shielding housing for a mobile communication device according to claim 2, characterized in that: The first through slot (7) and the second through slot (8) are provided in multiple circumferential directions, and the multiple first through slots (7) and second through slots (8) form a circumferential rotation limiting structure for the communication cable.

4. The electromagnetic shielding housing for a mobile communication device according to claim 3, characterized in that: The semi-magnetic ring (5) is connected to the bearing surface of the bearing block (3) by an elastic element, which is a compression spring, a spring sheet or a rubber pad.

5. The electromagnetic shielding housing for a mobile communication device according to claim 4, characterized in that: The lever (6) has a rectangular or T-shaped cross-section. One end of the lever (6) near the middle of the semi-magnetic ring (5) is provided with an arc-shaped support surface that matches the lower surface of the semi-magnetic ring (5).

6. The electromagnetic shielding housing for a mobile communication device according to claim 5, characterized in that: The first housing (1) and the second housing (2) are connected by bolts, and the bolt sleeves are located at the four corners of the semi-magnetic ring (5). The bolt sleeves intersect the semi-magnetic ring (5) in the axial direction to form an axial limiting structure for the semi-magnetic ring (5).

7. The electromagnetic shielding housing for a mobile communication device according to claim 6, characterized in that: The recessed area of ​​the bearing block (3) is provided with a pivot groove or arc-shaped guide surface corresponding to the fulcrum position of the lever (6), and the lever (6) and the recessed area of ​​the bearing block (3) form a swinging fit.

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