Shielding cover assembly

Abstract

The utility model discloses a shielding cover assembly which comprises a lower shell, a shielding cover and an upper shell, the lower shell comprises an inner cover and an outer baffle, the top of the inner cover is closed, the bottom of the inner cover is open, the top and the bottom of the outer baffle are open, and the outer baffle covers the inner cover. The peripheral baffle and the inner cover are hermetically connected into a whole at the bottom edge; an insertion groove is formed between the inner wall of the peripheral baffle and the outer wall of the inner cover; the top of the shielding case is a closed surface, and the bottom of the shielding case is an open surface and is inserted into the insertion groove from above; the upper shell is provided with a closed top face and an open bottom face, an upper containing cavity is formed in the upper shell, the upper shell covers the periphery baffle of the lower shell and abuts against the periphery baffle when the shielding cover is installed in the inserting groove, at the moment, the top of the shielding cover is located in the upper containing cavity, and the shielding cover is completely wrapped in the space formed by the lower shell and the upper shell. The isolation from the internal space of the inner cover and the external space of the outer baffle and the upper shell is realized; the lower shell and the upper shell are both made of insulating materials, and the shielding cover is made of high-permeability materials.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a shielding cover assembly. Background Art

[0002] The transformer in the instrument is a component that converts the high voltage of the power supply into the low voltage required for the operation of the instrument. When there is a strong magnetic field in the working environment, it will affect the normal working state of the transformer, resulting in unstable voltage and current, causing the instrument to stop working, and thus causing adverse consequences. To avoid the potential hazards brought by this situation, a shielding cover made of a material with high magnetic permeability is usually installed outside the transformer to shield the strong magnetic field. However, since the circuit around the transformer is a high-voltage circuit and the shielding cover is a conductor, this will lead to situations such as short circuit, insufficient electrical clearance of the circuit, and insufficient withstand voltage level, which cannot meet the safety regulations requirements and thus cause potential safety hazards; in addition, the material with high magnetic permeability is prone to rust, and generally, painting on the surface of the shielding cover is used to improve it, but it is very difficult for the thickness of the paint film in the painting process to reach the withstand voltage level requirements, and the paint film is easily scratched by components, thus losing the protection effect. Content of the Utility Model

[0003] The utility model aims at the problems and deficiencies existing in the prior art, and provides a new type of shielding cover assembly.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a shielding cover assembly, which includes a lower shell, a shielding cover and an upper shell. The lower shell includes an inner cover and an outer periphery baffle. The top of the inner cover is closed and the bottom is open. The top and bottom of the outer periphery baffle are both open. The outer periphery baffle covers the outside of the inner cover. The outer periphery baffle and the inner cover are hermetically connected as a whole at the bottom edge, an insertion groove is formed between the inner wall of the outer periphery baffle and the outer wall of the inner cover, and a lower accommodation cavity is formed in the inner cover.

[0006] The top of the shielding cover is a closed surface and the bottom is an open surface. The size of the shielding cover matches the size of the insertion groove, so that the bottom of the shielding cover can be inserted into the insertion groove from above; the height of the shielding cover is slightly greater than the height of the inner cover, and when the bottom of the shielding cover is inserted into the insertion groove, it extends to the bottom of the insertion groove.

[0007] The upper shell has a closed top surface and an open bottom surface, and an upper accommodation cavity is formed in the upper shell. When the shielding cover is installed in the insertion groove, the upper shell is covered on the outer periphery baffle of the lower shell and abuts against the outer periphery baffle. At this time, the top of the shielding cover is located in the upper accommodation cavity, and the shielding cover is completely wrapped in the space formed by the lower shell and the upper shell, realizing the isolation from the internal space of the inner cover and the external spaces of the outer periphery baffle and the upper shell.

[0008] At least two opposite outer walls of the peripheral shield are provided with first buckles, and a buckle groove that can be buckled with the first buckle is provided on the outer wall of the upper shell corresponding to the first buckle. When the upper shell is covered on the peripheral shield, the first buckle is buckled and connected with the buckle groove;

[0009] The materials of the lower shell and the upper shell are both insulating materials, and the material of the shielding cover is a high magnetic permeability material.

[0010] At least two opposite bottom edges of the peripheral shield are provided with second buckles. When shielding the transformer, the transformer is installed on the circuit board, and a notch matching the second buckle is provided on the side of the transformer on the circuit board. The shielding cover assembly is connected to the circuit board by inserting the second buckle of the lower shell into the notch.

[0011] Support columns are respectively provided at four corners of the bottom edge of the lower shell, and the support columns are in contact with the circuit board.

[0012] The height of the inner cover is greater than the height of the peripheral shield, and the inner cover guides when the shielding cover is inserted into the insertion groove.

[0013] The upper shell and the peripheral shield have the same length and width. When the upper shell is covered on the peripheral shield, the outer wall of the upper shell is flush with the outer wall of the peripheral shield.

[0014] The positive and progressive effects of the present utility model are as follows:

[0015] For a shielding cover assembly of the present utility model, the inner cover inside the lower shell and the peripheral shield outside isolate the shielding cover from the transformer completely, and the peripheral shields outside the upper shell and the lower shell isolate the shielding cover from peripheral devices. The upper shell and the lower shell are both made of insulating materials, fully meeting the safety regulations requirements. The upper shell and the lower shell wrap the shielding cover inside, making the shielding cover not easily rust and corrode due to the influence of harsh environments. The upper shell and the lower shell have a certain thickness, avoiding the hidden danger of abrasion and breakage during installation, improving reliability and extending the service life; the support columns at the bottom of the lower shell form a gap between the bottom of the shielding cover assembly and the circuit board, and conventional surface-mounted components can be arranged, increasing the effective utilization space of the circuit board and facilitating heat dissipation, reducing the difficulty of circuit board erection and device layout around the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic exploded view of the shielding cover assembly of this embodiment;

[0017] FIG. 2(a)-(b) is a schematic structural view of the lower shell of this embodiment;

[0018] FIG. 3(a)-(b) is a schematic structural view of the shielding cover of this embodiment;

[0019] Figures 4(a)-(b) are schematic structural diagrams of the upper shell of this embodiment;

[0020] Figures 5(a)-(b) are schematic diagrams of the assembly process of the shielding cover assembly of this embodiment;

[0021] Figure 6 is a cross-sectional view of the completed assembly of the shielding cover assembly of this embodiment;

[0022] Figure 7 is a schematic structural diagram of the circuit board with a transformer installed in this embodiment;

[0023] Figures 8(a)-(b) are schematic diagrams of the installation process of the shielding cover assembly on the circuit board of this embodiment;

[0024] Figure 9 is a cross-sectional view of the shielding cover assembly installed on the circuit board of this embodiment.

[0025] In the figures:

[0026] 1 - lower shell; 1a - insertion slot; 1b - peripheral baffle; 1c - inner cover; 1d - lower accommodation cavity; 1e - first buckle; 1f - support column; 1g - second buckle;

[0027] 2 - shielding cover; 2a - closed surface; 2b - open surface;

[0028] 3 - upper shell; 3a - top surface; 3b - upper accommodation cavity; 3c - buckle groove;

[0029] 4 - circuit board; 4a - transformer; 4b - notch. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] As Figure 1 shown, this embodiment provides a shielding cover assembly, including a lower shell 1, a shielding cover 2, and an upper shell 3.

[0032] As shown in Figure 2, the lower case 1 includes an inner cover 1c and a peripheral shield 1b. The top of the inner cover 1c is closed and the bottom is open. Both the top and the bottom of the peripheral shield 1b are open. The peripheral shield 1b covers the outside of the inner cover 1c. The peripheral shield 1b and the inner cover 1c are hermetically connected as a whole at the bottom edge. An insertion groove 1a is formed between the inner wall of the outer peripheral shield 1b and the outer wall of the inner cover 1c, and a lower accommodation cavity 1d is formed in the inner cover 1c. The lower accommodation cavity 1d is used to accommodate the transformer 4a. The height of the inner cover 1c is greater than the height of the peripheral shield 1b. At least two opposite outer walls of the peripheral shield 1b are provided with first buckles 1e. At least two opposite bottom edges of the peripheral shield 1b are provided with second buckles 1g. Support columns 1f are respectively arranged at the four corners of the bottom edge of the lower case 1. The material of the lower case 1 is an insulating material.

[0033] As shown in Figure 3, the top of the shielding cover 2 is a closed surface 2a and the bottom is an open surface 2b. The size of the shielding cover 2 matches the size of the insertion groove 1a, so that the bottom of the shielding cover 2 can be inserted into the insertion groove 1a from above. The height of the shielding cover 2 is slightly greater than the height of the inner cover 1c. When the bottom of the shielding cover 2 is inserted into the insertion groove 1a, it extends to the bottom of the insertion groove 1a. The material of the shielding cover 2 is a high magnetic permeability material.

[0034] As shown in Figure 4, the upper case 3 has a closed top surface 3a and an open bottom surface, and an upper accommodation cavity 3b is formed in the upper case 3. A buckle groove 3c that can be buckled with the first buckle 1e is provided on the outer wall of the upper case 3 corresponding to the first buckle 1e. When the upper case 3 is covered on the peripheral shield 1b, the first buckle 1e and the buckle groove 3c are buckled and connected. The material of the upper case 3 is an insulating material.

[0035] Figure 5(a) is a schematic diagram of the assembly process of this embodiment. First, as shown in Figure 5(a), the shielding cover 2 is installed in the lower case 1. The bottom of the shielding cover 2 is inserted to the bottom of the insertion groove 1a. The inner cavity of the shielding cover 2 is closely fitted with the inner cover 1c, and the outer side surface of the shielding cover 2 is closely fitted with the peripheral shield 1b. Since the height of the inner cover 1c is greater than the height of the peripheral shield 1b, the inner cover 1c guides when the shielding cover 2 is inserted into the insertion groove 1a. After the shielding cover 2 is installed in the insertion groove 1a of the lower case 1, a part of the closed side of the shielding cover 2 is exposed. Then, the upper case 3 is covered on the peripheral shield 1b, and the upper accommodation cavity 3b of the upper case 3 covers the exposed part of the shielding cover 2. The upper case 3 and the peripheral shield 1b have the same length and width. When the upper case 3 is covered on the peripheral shield 1b, the outer wall of the upper case 3 is flush with the outer wall of the peripheral shield 1b. Each first buckle 1e is buckled and connected with the corresponding buckle groove 3c, so that the lower case 1 and the upper case 3 are fixed. The assembled state is shown in Figure 5(b), and the assembly efficiency is high.

[0036] As Figure 6As shown, when the shielding cover 2 is installed in the insertion slot 1a, the upper shell 3 covers the peripheral stop 1b of the lower shell 1 and abuts against the peripheral stop 1b. The top of the shielding cover 2 is located in the upper receiving cavity 3b. The shielding cover 2 is completely covered in the space formed by the lower shell 1 and the upper shell 3, realizing isolation from the internal space of the inner cover 1c and the external spaces of the peripheral stop 1b and the upper shell 3.

[0037] As Figure 7 As shown in FIGS. 8, when shielding the transformer 4a is realized, the transformer 4a is installed on the circuit board 4. A notch 4b matching the second buckle 1g is provided on the side of the transformer 4a on the circuit board 4. The shielding cover assembly is connected to the circuit board 4 by inserting the second buckle 1g of the lower shell 1 into the notch 4b; the support columns 1f at the four corners of the bottom edge of the lower shell 1 abut against the circuit board 4; the support columns 1f at the bottom of the lower shell 1 form a gap between the bottom of the lower shell 1 and the circuit board 4, allowing conventional surface-mounted components to be arranged, increasing the effective utilization space of the circuit board 4 and facilitating heat dissipation.

[0038] As Figure 9 As shown, in combination with FIGS. 2-4, the inner cover 1c on the inner side of the lower shell 1 completely isolates the shielding cover 2 from the transformer 4a, and the peripheral stop 1b on the outer sides of the upper shell 3 and the lower shell 1 isolates the shielding cover 2 from the peripheral devices. Since the materials of both the lower shell 1 and the upper shell 3 are insulating materials and the material of the shielding cover 2 is a high magnetic permeability material, isolation protection is achieved while shielding.

[0039] This kind of shielding cover assembly is simple to install, with the assembly action direction being the same, which is beneficial to automated production. The inner cover 1c on the inner side of the lower shell 1 and the peripheral stop 1b on the outer side completely isolate the shielding cover 2 from the transformer 4a, and the peripheral stop 1b on the outer sides of the upper shell 3 and the lower shell 1 isolates the shielding cover from the peripheral devices. Both the upper shell 3 and the lower shell 1 are insulating materials, fully meeting the safety regulations requirements. The upper shell 3 and the lower shell 1 wrap the shielding cover 2 inside, making the shielding cover 2 not easily rust and corrode under harsh environments. The upper shell 3 and the lower shell 1 have a certain thickness, avoiding the hidden danger of wear and breakage during installation, improving reliability and extending the service life; the support columns 1f at the bottom of the lower shell 1 form a gap between the bottom of the shielding cover assembly and the circuit board 4, allowing conventional surface-mounted components to be arranged, increasing the effective utilization space of the circuit board 4 and facilitating heat dissipation, reducing the difficulty of laying out the circuit board 4 and arranging devices around the transformer 4a; it has broad application prospects.

[0040] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that these are only examples. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A shielding cover assembly, characterized in that: It comprises a lower shell, a shielding cover and an upper shell, the lower shell comprises an inner cover and an outer peripheral block, the inner cover is closed at the top and open at the bottom, the outer peripheral block is open at the top and the bottom, the outer peripheral block is arranged outside the inner cover, the outer peripheral block and the inner cover are sealed and connected as one at the bottom edge, an insertion groove is formed between the inner wall of the outer peripheral block and the outer wall of the inner cover, and a lower accommodating cavity is formed in the inner cover; The top of the shielding cover is a closed surface, and the bottom is an open surface. The size of the shielding cover matches the size of the insertion slot, so that the bottom of the shielding cover can be inserted into the insertion slot from above; The upper shell has a closed top surface and an open bottom surface and forms an upper accommodating cavity in the upper shell. When the shielding cover is installed in the insertion slot, the upper shell covers the outer peripheral stop of the lower shell and abuts against the outer peripheral stop. At this time, the top of the shielding cover is located in the upper accommodating cavity, and the shielding cover is completely covered in the space formed by the lower shell and the upper shell, so as to be isolated from the inner space of the inner cover and the outer peripheral stop and the upper shell. The materials of the lower shell and the upper shell are both insulating materials, and the material of the shielding cover is high magnetic permeability material.

2. The shielding cover assembly according to claim 1, wherein: The outer walls of at least two opposite surfaces of the outer block are provided with a first buckle, and the outer wall of the upper shell is provided with a buckle groove corresponding to the first buckle that can be engaged with the first buckle. When the upper shell is covered onto the outer block, the first buckle is engaged and connected with the buckle groove.

3. The shielding cover assembly according to claim 1, wherein: The height of the shielding cover is slightly greater than the height of the inner cover. When the bottom of the shielding cover is inserted into the insertion slot, it extends to the bottom of the insertion slot. The inner cover guides the shielding cover when it is inserted into the insertion slot.

4. The shielding cover assembly according to claim 1, wherein: A second buckle is provided on the bottom edge of at least two opposite surfaces of the outer block. When shielding the transformer is achieved, the transformer is installed on a circuit board, and a groove matching the second buckle is provided on the side of the transformer on the circuit board. The shielding cover assembly is connected to the circuit board by inserting the second buckle of the lower shell into the groove.

5. The shielding cover assembly according to claim 4, wherein: Support columns are respectively arranged at the four corners of the bottom edge of the lower shell, and the support columns are in contact with the circuit board.

6. The shielding cover assembly according to claim 1, wherein: The upper shell and the outer peripheral baffle have the same length and width. When the upper shell covers the outer peripheral baffle, the outer wall of the upper shell is flush with the outer wall of the outer peripheral baffle.

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