Shielding case with good shielding performance

Abstract

The utility model relates to the technical field of electromagnetic shielding, in particular to a shielding case with good shielding performance, which comprises a shielding support, a shielding ring sleeved outside the shielding support and a shielding cover covered on the shielding support, and a plurality of welding teeth are arranged at the bottom of the shielding support. The shielding ring is movably connected to the outer side of the shielding frame in a sleeving mode and surrounds the welding teeth, and the shielding cover is detachably connected to the top of the shielding ring in a clamped mode. The shielding case provided by the utility model is easy to weld and has an excellent electromagnetic wave shielding effect.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic shielding, in particular to a shielding cover with good shielding performance. Background Art

[0002] Electronic products can be seen everywhere in our daily life. There are many electronic components in electronic products. In order to prevent external electromagnetic waves from interfering with the internal circuit and reduce the external radiation of electromagnetic waves generated inside, a shielding cover needs to be installed. Traditional shielding covers are usually one-piece, with good shielding performance but not convenient for later circuit repair and inspection, poor welding performance, and prone to poor welding defects. Existing shielding covers are usually set as two-piece shielding brackets and shielding covers. A notch connecting the bottom edge is horizontally set on the shielding cover bracket, which increases the contact area of ​​the solder, facilitates soldering during welding, reduces poor welding defects, and the shielding cover and shielding bracket are detachable, which is convenient for later repair and inspection. However, in order to prevent the extraction from rupture, there cannot be right-angle turns in the extraction molding, so there are gaps at the corners of the shielding bracket and the outer wall of the shielding cover, which weakens the shielding performance of the shielding cover. Utility Model Content

[0003] In order to solve the problems in the above-mentioned background technology, the utility model provides a shielding cover with good shielding performance, which can increase the amount of tin creeping, has a good welding effect, and does not affect the shielding performance of the shielding cover.

[0004] The utility model solves the technical problem by adopting the following solution: a shielding cover with good shielding performance, comprising a shielding bracket, a shielding ring mounted on the outside of the shielding bracket and a shielding cover covering the shielding bracket, wherein a plurality of welding teeth are arranged at the bottom of the shielding bracket, the shielding ring is movably mounted on the outside of the shielding bracket and surrounds the welding teeth, and the shielding cover is detachably clamped on the top of the shielding ring.

[0005] By adopting the above technical solution, the shielding cover can increase the solder creeping amount and facilitate welding without affecting the shielding performance of the shielding cover.

[0006] Furthermore, an opening is provided on the welding tooth, and a protrusion is provided at a position on the inner wall of the shielding ring corresponding to the opening, and the protrusion is embedded in the opening.

[0007] By adopting the above technical solution, the shielding ring can be mutually engaged with the shielding bracket and is easy to install and disassemble.

[0008] Furthermore, a vertically arranged slide groove is provided on the outer wall of the shielding bracket, and two ends of the slide groove are respectively connected to the top of the shielding bracket and the opening, and the protrusion moves along the slide groove and is snapped into the opening.

[0009] By adopting the above technical solution, the shielding ring can be clamped in the opening of the shielding bracket through the sliding groove, which makes the operation more convenient and labor-saving.

[0010] Furthermore, the side wall of the shielding cover is provided with a hook, and the side wall of the shielding ring is provided with a slot; the hook is engaged with the slot.

[0011] By adopting the above technical solution, the shielding cover and the shielding ring can be mutually engaged and can be easily installed and disassembled.

[0012] Furthermore, a contact surface is provided at the bottom of the hook, and a supporting surface intersecting with the hook and contacting the contact surface is provided at the bottom of the slot.

[0013] By adopting the above technical solution, the shielding cover and the shielding ring are connected more firmly, and the operation method is simple.

[0014] Furthermore, the hook is made of elastic material.

[0015] By adopting the above technical solution, the hook is prevented from being damaged by force and the elastic material is more durable.

[0016] Furthermore, the hooks are respectively arranged on four sides of the shielding cover, and the slots are respectively arranged on four sides of the shielding ring; the positions of the hooks and the slots correspond to each other.

[0017] By adopting the above technical solution, the shielding cover is prevented from slipping off or moving left and right.

[0018] Furthermore, the bottom of the shielding cover and the top of the shielding bracket abut against each other and have compatible structures.

[0019] By adopting the above technical solution, the shielding cover and the shielding bracket are in closer contact and the shielding effect is better.

[0020] In summary, the beneficial effects of the utility model are as follows: the shielding cover comprises a shielding bracket, a shielding cover, and a shielding ring surrounding the outside of the shielding cover, and the bottom of the shielding bracket is provided with welding teeth, the shielding cover is not only easy to weld but also has a good shielding effect and is easy to produce. The shielding ring and the shielding bracket are mutually clamped, the shielding cover and the shielding ring are mutually clamped, the shielding cover is easy to install and disassemble, the operation method is simple, and it is convenient for later observation and maintenance.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the front view of this embodiment;

[0023] Figure 2 is a cross-sectional view of this embodiment;

[0024] Figure 3 for Figure 2 Enlarged view of middle B;

[0025] Figure 4 for Figure 2 A is an enlarged view of the middle image.

[0026] In the figure: 1. shielding bracket; 11. slide groove; 12. opening; 13. welding tooth; 2. shielding ring; 21. slot; 22. protrusion; 3. shielding cover; 31. hook. DETAILED DESCRIPTION

[0027] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0028] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0029] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0030] like Figure 1 As shown, this embodiment is a shielding cover with good shielding performance, including a shielding bracket 1, a shielding ring 2 mounted on the outside of the shielding bracket 1, and a shielding cover 3 covering the shielding bracket 1. The bottom of the shielding bracket 1 is provided with welding teeth 13, and the welding teeth 13 can increase the solder contact surface and increase the solder creeping amount, and the welding effect will be better. The shielding ring 2 is slidably sleeved on the outside of the shielding frame and surrounds the welding teeth 13. Through the above settings, the shielding ring 2 can not only cover the opening 12 but also cover the corner gap of the shielding bracket 1 to prevent electromagnetic wave leakage, and the shielding cover has better shielding performance.

[0031] like Figure 2As shown, an opening 12 is provided on the welding tooth 13, a protrusion 22 is provided at a position on the inner wall of the shielding ring 2 corresponding to the opening 12, a vertically arranged slide groove 11 is provided on the outer wall of the shielding bracket 1, and both ends of the slide groove 11 are respectively connected to the top of the shielding bracket 1 and the opening 12, and the shielding cover 3 is fixed to the top of the shielding ring 2 by clamping the protrusion 22 on the shielding ring 2 along the slide groove 11 to the opening 12 on the shielding bracket 1, and the installation method is very simple, and the opening 12 on the welding tooth 13 can not only reduce the weight of the shielding cover, but also reduce the temperature difference between the inside and outside of the shielding cover during reflow soldering, thereby ensuring the reliability of welding.

[0032] like Figure 2 As shown, the side wall of the shielding cover 3 is provided with a hook 31, and the side wall of the shielding ring 2 is provided with a slot 21. The shielding cover 3 is fixed to the upper end of the shielding bracket 1 by engaging the hook 31 in the slot 21. Since the shielding cover 3 needs to be opened for later circuit detection, in order to prevent the hook 31 from being damaged by force, the hook 31 of this embodiment is made of plastic material, which is low in cost and durable, and can extend the service life of the hook 31, and the use time of the shielding cover is also longer.

[0033] like Figure 3 and Figure 4 As shown, the bottom of the hook 31 is provided with an abutting surface, and the bottom of the slot 21 is provided with an abutting surface intersecting with the hook 31 and abutting against the abutting surface. The abutting surface in the shielding cover of this embodiment is parallel to the abutting surface, and the hook 31 and the slot 21 can slide relative to each other through two parallel surfaces, which is more convenient to operate. Through the above settings, the installation and disassembly method of the shielding cover of this embodiment is simple, easy to operate and easy to produce, which is convenient for later observation or maintenance of the circuit or electronic components in the shielding cover.

[0034] like Figure 2 As shown, the hooks 31 are respectively arranged on the four sides of the shielding cover 3, and the slots 21 are respectively arranged on the four sides of the shielding ring 2; the hooks 31 correspond to the slots 21; the bottom of the shielding cover 3 abuts against the top of the shielding bracket 1 and the structures are adapted. Through the above arrangement, the shielding cover 3 can be prevented from slipping or moving left and right, so that the shielding cover 3 is more tightly connected to the shielding ring 2.

[0035] The above embodiments are only preferred implementation modes of the present utility model, and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A shielding cover with good shielding performance, characterized in that: The invention comprises a shielding bracket (1), a shielding ring (2) mounted on the outside of the shielding bracket (1), and a shielding cover (3) covering the shielding bracket (1); a plurality of welding teeth (13) are provided at the bottom of the shielding bracket (1); the shielding ring (2) is movably mounted on the outside of the shielding bracket and surrounds the welding teeth (13); and the shielding cover (3) is detachably snap-fitted to the top of the shielding ring (2).

2. A shielding cover with good shielding performance according to claim 1, characterized in that: An opening (12) is provided on the welding tooth (13), and a convex block (22) is provided at a position on the inner wall of the shielding ring (2) corresponding to the opening (12), and the convex block (22) is embedded in the opening (12).

3. A shielding cover with good shielding performance according to claim 2, characterized in that: A vertically arranged slide groove (11) is provided on the outer wall of the shielding bracket (1), and two ends of the slide groove (11) are respectively connected to the top of the shielding bracket (1) and the opening (12), and the protrusion (22) moves along the slide groove (11) and is snap-fitted into the opening (12).

4. A shielding cover with good shielding performance according to claim 1, characterized in that: The side wall of the shielding cover (3) is provided with a hook (31), and the side wall of the shielding ring (2) is provided with a slot (21); the hook (31) is engaged with the slot (21).

5. A shielding cover with good shielding performance according to claim 4, characterized in that: The bottom of the hook (31) is provided with an abutment surface, and the bottom of the slot (21) is provided with an abutment surface intersecting with the hook (31) and abutting against the abutment surface.

6. A shielding cover with good shielding performance according to claim 4, characterized in that: The hook (31) is made of elastic material.

7. A shielding cover with good shielding performance according to claim 6, characterized in that: The hooks (31) are respectively arranged on the four sides of the shielding cover (3), and the slots (21) are respectively arranged on the four sides of the shielding ring (2); the positions of the hooks (31) and the slots (21) correspond to each other.

8. The shielding cover with good shielding performance according to claim 1, characterized in that: The bottom of the shielding cover (3) and the top of the shielding bracket (1) abut against each other and have compatible structures.

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