Shielding case

Abstract

The utility model discloses a shielding case, which comprises a frame and a cover body, the cover body covers the frame, and the circumferential side wall of the cover body surrounds the circumferential side wall of the frame; a plurality of elastic clamping pieces are formed on the circumferential side wall of the cover body, the elastic clamping pieces are arranged at intervals in the circumferential direction of the cover body, first limiting protrusions are further arranged on the inner side faces of the elastic clamping pieces, and the first limiting protrusions can abut against the circumferential side wall of the frame through elastic restoring force of the elastic clamping pieces; the inner side face of the top wall of the cover body is provided with at least one second limiting protrusion, the frame is provided with a top limiting face, and the top limiting face is provided with at least one limiting hole matched with the at least one second limiting protrusion. According to the utility model, a locking structure does not need to be arranged in the circumferential direction, the installation stability of the cover body can still be ensured, the cover body is prevented from falling off from the frame, and the cover body is easy to disassemble and assemble, so that a shielded part is convenient to maintain, the disassembled cover body does not deform, and the cover body can be repeatedly used for multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, and particularly to a shielding cover. Background Art

[0002] When circuit boards, wires, electronic components, etc. in electronic devices work, they will emit high-frequency electromagnetic waves, which will interfere with the normal operation of electronic products.

[0003] In order to reduce the interference and radiation of electromagnetic waves, in the prior art, shielding devices are often used to cover circuit boards, wires, electronic components, etc. to achieve the purpose of shielding electromagnetic waves. The existing shielding cover generally includes a frame and a cover body. The frame is arranged on the circuit board, and a plurality of locking protrusions are provided on the side wall of the cover body. Corresponding locking holes are formed on the side wall of the frame to cooperate with the plurality of locking protrusions. After the cover body is installed on the frame, the locking protrusions will snap into the locking holes, so that the cover body is firmly assembled on the frame. Summary of the Utility Model

[0004] The inventor of the utility model found that: when the part covered by the shielding cover needs to be repaired, since it is difficult for the locking protrusions to escape from the locking holes, a relatively large force needs to be applied to remove the cover body from the frame. And because the cover body is subjected to a large force, the removed cover body will be deformed and cannot be reused. Therefore, after the repair is completed, a new cover body needs to be replaced and assembled on the frame to ensure the shielding performance of the shielding cover.

[0005] The purpose of the utility model is to provide a shielding cover to solve the technical problem that the cover body of the existing shielding cover is difficult to disassemble and cannot be reused.

[0006] The above object of the utility model can be achieved by adopting the following technical solutions:

[0007] The utility model provides a shielding cover, which includes a frame and a cover body. The cover body covers the frame, and the circumferential side wall of the cover body surrounds the circumferential side wall of the frame; a plurality of elastic clamping pieces are formed on the circumferential side wall of the cover body. The plurality of elastic clamping pieces are arranged at intervals along the circumference of the cover body. A first limiting protrusion is further provided on the inner side surface of the elastic clamping piece. The first limiting protrusion can abut against the circumferential side wall of the frame by the elastic restoring force of the elastic clamping piece; a plurality of second limiting protrusions are provided on the inner side surface of the top wall of the cover body. The frame has a top limiting surface, and a plurality of limiting holes are formed on the top limiting surface to cooperate with the plurality of second limiting protrusions.

[0008] In an embodiment of the utility model, the elastic clamping piece has an inner inclined portion, and the inner inclined portion extends obliquely downward to its inner side from top to bottom. The first limiting protrusion is arranged on the inner side surface of the inner inclined portion.

[0009] In an embodiment of the present utility model, the first limiting protrusion is disposed near the bottom end of the inner inclined portion.

[0010] In an embodiment of the present utility model, the height of the protrusion of the first limiting protrusion is less than the distance between the top end of the inner inclined portion and the circumferential side wall of the frame.

[0011] In an embodiment of the present utility model, the elastic clamping piece further has a bending portion and an outer inclined portion. The outer inclined portion extends obliquely outward from top to bottom. The bottom end of the inner inclined portion and the top end of the outer inclined portion are connected by the bending portion, and the bending portion abuts against the circumferential side wall of the frame.

[0012] In an embodiment of the present utility model, a plurality of the second limiting protrusions are arranged at intervals along the circumference of the cover body at the edge portion of the top wall of the cover body. The top limiting surface is arranged to enclose along the circumference of the frame and is connected to the circumferential side wall of the frame. A plurality of the limiting holes are arranged on the top limiting surface.

[0013] In an embodiment of the present utility model, the inner diameter of the limiting hole is greater than or equal to the outer diameter of the second limiting protrusion, and the top wall of the cover body abuts against the top limiting surface.

[0014] In an embodiment of the present utility model, the circumferential side wall of the cover body has a connected upper side wall portion and a lower side wall portion. The upper side wall portion is connected to the top wall of the cover body, and a plurality of the elastic clamping pieces are arranged on the lower side wall portion.

[0015] In an embodiment of the present utility model, a plurality of gaps are formed in the lower side wall portion. The plurality of gaps are arranged at intervals along the circumference of the cover body. A plurality of sheet-like structures are formed between the plurality of gaps. The plurality of sheet-like structures are formed into a plurality of the elastic clamping pieces by stamping and bending.

[0016] In an embodiment of the present utility model, the first limiting protrusion is formed on the elastic clamping piece by stamping from the outside to the inside; the second limiting protrusion is formed on the top wall of the cover body by stamping from the outside to the inside.

[0017] The features and advantages of the present utility model are as follows:

[0018] For the shielding cover of the present utility model, there is no need to provide a locking structure in the circumferential direction, and the installation stability of the cover body can still be ensured, preventing the cover body from falling off the frame. Moreover, it is easy to disassemble and assemble. When it is necessary to disassemble the cover body, only an upward pulling force needs to be applied to overcome the friction between the circumferential side wall of the cover body and the circumferential side wall of the frame, and the cover body can be separated from the frame, thus facilitating the maintenance of the shielded part. Moreover, the cover body after disassembly will not be deformed and can be reused multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a three-dimensional schematic diagram of the shielding cover before assembly in the present utility model.

[0021] Figure 2 It is a three-dimensional schematic diagram of the shielding cover after assembly in the present utility model.

[0022] Figure 3 It is a partial cross-sectional view of the shielding cover after assembly in the present utility model.

[0023] Figure 4 It is a partial cross-sectional view of the cover body in the present utility model.

[0024] Figure 5 It is a partial cross-sectional view of the frame in the present utility model.

[0025] In the figure:

[0026] 1. Cover body; 11. Circumferential side wall; 111. Upper part of the side wall; 112. Lower part of the side wall; 12. Top wall; 13. Elastic clamping piece; 131. Inner inclined part; 132. Bending part; 133. Outer inclined part; 14. First limiting protrusion; 15. Second limiting protrusion; 16. Gap;

[0027] 2. Frame; 21. Circumferential side wall; 22. Top limiting surface; 23. Limiting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] Such as Figure 1 、 Figure 2 And Figure 3As shown in the figure, the present utility model provides a shielding cover, which includes a frame 2 and a cover body 1. The cover body 1 is covered on the frame 2, and the circumferential side wall 11 of the cover body 1 surrounds the circumferential side wall 21 of the frame 2; a plurality of elastic clamping pieces 13 are formed on the circumferential side wall 11 of the cover body 1. The plurality of elastic clamping pieces 13 are arranged at intervals along the circumference of the cover body 1. A first limiting protrusion 14 is provided on the inner side surface of the elastic clamping piece 13. The first limiting protrusion 14 can be abutted against the circumferential side wall 21 of the frame 2 by the elastic restoring force of the elastic clamping piece 13; a plurality of second limiting protrusions 15 are provided on the inner side surface of the top wall 12 of the cover body 1. The frame 2 has a top limiting surface 22, and a plurality of limiting holes 23 are provided on the top limiting surface 22 and are matched with the plurality of second limiting protrusions 15.

[0030] For the convenience of description, the present utility model is described with reference to Figure 1 and Figure 2 the shown usage state, but not limited thereto. Specifically, the bottom of the frame 2 is welded and fixed to a circuit board and encloses the part on the circuit board that needs to be shielded. Then, the cover body 1 is covered on the frame 2 to form a shielding cover, so that the part on the circuit board that needs to be shielded is accommodated in the shielding cover. The shapes of the cover body 1 and the frame 2 include but are not limited to the rectangle of this embodiment, and can also be circular, triangular, trapezoidal or other shapes. In this embodiment, both the cover body 1 and the frame 2 are made of metal thin plates, and are formed by stamping after being cut into a certain shape. As Figure 4 shown, the first limiting protrusion 14 is formed by stamping the elastic clamping piece 13 from its outside to the inside; the second limiting protrusion 15 is formed by stamping the top wall 12 of the cover body 1 from its outside to the inside.

[0031] For the shielding cover of the present utility model, the elastic restoring force of the elastic clamping piece 13 is used to press the first limiting protrusion 14 into contact with the circumferential side wall 21 of the frame 2, so as to limit the movement of the cover body 1 in the height direction H by the frictional force between the first limiting protrusion 14 and the circumferential side wall 21 of the frame 2; the cover body 1 is restricted from moving in the plane direction (including any direction in the plane such as the length direction L and the width direction W) by the cooperation of the limiting holes 23 and the second limiting protrusions 15, and it is beneficial to maintain the stability of the elastic restoring force of each elastic clamping piece 13, so that the force between the circumferential side wall 11 of the cover body 1 and the circumferential side wall 21 of the frame 2 is uniform.

[0032] Therefore, the present utility model does not need to set a locking structure in the circumferential direction, and still can ensure the installation stability of the cover body 1, prevent the cover body 1 from falling off the frame 2, and is easy to disassemble and assemble. When it is necessary to disassemble the cover body 1, only an upward pulling force needs to be applied to overcome the frictional force between the circumferential side wall 11 of the cover body 1 and the circumferential side wall 21 of the frame 2, and then the cover body 1 can be separated from the frame 2, so as to facilitate the maintenance of the shielded part. Moreover, the disassembled cover body 1 will not be deformed and can be reused multiple times.

[0033] Of course, based on the characteristic of multiple repeated uses, if it is necessary to further improve the stability of the cover body 1, without increasing the mating force between the cover body 1 and the frame 2, other parts around the cover body 1 can be used to apply a limiting force to the cover body 1 in the height direction H to further improve the stability of the fit between the cover body 1 and the frame 2.

[0034] As Figure 3 and Figure 4 shown, in the embodiment of the present utility model, the elastic clamping piece 13 has an inner inclined portion 131 which extends obliquely inward from top to bottom. The first limiting protrusion 14 is arranged on the inner side surface of the inner inclined portion 131. After the cover body 1 is assembled to the frame 2, the inner inclined portion 131 can elastically deform outward to generate an inward elastic restoring force, so that the first limiting protrusion 14 can press and contact the circumferential side wall 21 of the frame 2 by using the inward elastic restoring force.

[0035] Specifically, the elastic clamping piece 13 further has a bending portion 132 and an outer inclined portion 133. The outer inclined portion 133 extends obliquely outward from top to bottom. The bottom end of the inner inclined portion 131 and the top end of the outer inclined portion 133 are connected by the bending portion 132, and the bending portion 132 abuts against the circumferential side wall 21 of the frame 2. By providing the bending portion 132 and the outer inclined portion 133 and making the bending portion 132 abut against the circumferential side wall 21 of the frame 2, the elastic restoring force of the elastic clamping piece 13 can be increased, and further the installation stability of the cover body 1 is improved.

[0036] As Figure 3 and Figure 4 shown, in order for the first limiting protrusion 14 to receive a greater elastic restoring force, in the embodiment of the present utility model, the first limiting protrusion 14 is arranged near the bottom end of the inner inclined portion 131. In addition, in order to prevent the inner inclined portion 131 from elastically deforming outward too much and being prone to non-return after long-term use, in the embodiment of the present utility model, the protrusion height of the first limiting protrusion 14 is less than the distance between the top end of the inner inclined portion 131 and the circumferential side wall 21 of the frame 2.

[0037] As Figure 1 , Figure 4 and Figure 5 shown, in the embodiment of the present utility model, a plurality of second limiting protrusions 15 are arranged at intervals along the circumference of the cover body 1 at the edge of the top wall 12 of the cover body 1. The top limiting surface 22 is arranged to surround along the circumference of the frame 2 and is connected to the circumferential side wall 21 of the frame 2. A plurality of limiting holes 23 are arranged on the top limiting surface 22. By arranging the top limiting surface 22 to surround along the circumference of the frame 2 and connecting it to the circumferential side wall 21 of the frame 2, not only can a plurality of limiting holes 23 be arranged in the circumferential direction of the frame 2, but also it is beneficial to improve the structural stability of the frame 2 and the shielding effect of the shielding cover.

[0038] Specifically, the top wall 12 of the cover body 1 has two relatively arranged long side edges and two relatively arranged wide side edges. A plurality of second limiting protrusions 15 are evenly spaced at the edge portions near the two long side edges and the edge portions near the two wide side edges. The positions of the plurality of limiting holes 23 correspond to the positions of the plurality of second limiting protrusions 15. The inner diameter of the limiting hole 23 is greater than or equal to the outer diameter of the second limiting protrusion 15, so that the top wall 12 of the cover body 1 can abut against the top limiting surface 22 of the frame 2. In this embodiment, the inner diameter of the limiting hole 23 is equal to the outer diameter of the second limiting protrusion 15, and the second limiting protrusion 15 can be closely matched with the limiting hole 23 to ensure that the cover body 1 will not move in the plane direction.

[0039] Such as Figure 1 、 Figure 2 and Figure 3 As shown, in the embodiment of the present utility model, the circumferential side wall 11 of the cover body 1 has a connected upper side wall portion 111 and a lower side wall portion 112. The upper side wall portion 111 is connected to the top wall 12 of the cover body 1, and a plurality of elastic clamping pieces 13 are arranged on the lower side wall portion 112. By setting the upper side wall portion 111 to be connected to the top wall 12 of the cover body 1 and arranging a plurality of elastic clamping pieces 13 on the lower side wall portion 112, even if the elastic clamping pieces 13 are slightly permanently deformed (that is, the elastic clamping pieces 13 cannot fully rebound) after the cover body 1 is assembled multiple times, it will not affect the shielding effect of the shielding cover. Specifically, a plurality of gaps 16 are formed in the lower side wall portion 112. The plurality of gaps 16 are arranged at intervals along the circumference of the cover body 1. A plurality of sheet-like structures are formed between the plurality of gaps 16, and the plurality of sheet-like structures are formed into a plurality of elastic clamping pieces 13 by stamping and bending.

[0040] The above are only several embodiments of the present utility model. Those skilled in the art can make various changes or modifications to the embodiments of the present utility model without departing from the spirit and scope of the present utility model according to the content disclosed in the application documents.

Claims

1. A shielding cover, characterized in that: It comprises a frame and a cover body, wherein the cover body is disposed on the frame, and the circumferential side wall of the cover body surrounds the circumferential side wall of the frame; The circumferential side wall of the cover body is formed with a plurality of elastic clamping sheets, which are arranged at intervals along the circumference of the cover body, and the inner side surface of the elastic clamping sheet is also provided with a first limiting protrusion, which can abut against the circumferential side wall of the frame by utilizing the elastic restoring force of the elastic clamping sheet; The inner side surface of the top wall of the cover body is provided with a plurality of second limiting protrusions, the frame has a top limiting surface, and the top limiting surface is provided with a plurality of limiting holes matched with the plurality of second limiting protrusions.

2. The shielding cover according to claim 1, wherein: The elastic clamping piece has an inner inclined portion, and the inner inclined portion is arranged to extend obliquely toward the inner side from top to bottom, and the first limiting protrusion is arranged on the inner side surface of the inner inclined portion.

3. The shielding cover according to claim 2, characterized in that: The first limiting protrusion is arranged close to the bottom end of the inner inclined portion.

4. The shielding cover according to claim 2, characterized in that: A protrusion height of the first limiting protrusion is smaller than a distance between a top end of the inner inclined portion and a circumferential side wall of the frame.

5. The shielding cover according to claim 2, characterized in that: The elastic clamping piece also has a bending portion and an outer inclined portion, the outer inclined portion is inclined and extends from top to bottom toward its outer side, the bottom end of the inner inclined portion and the top end of the outer inclined portion are connected through the bending portion, and the bending portion abuts against the circumferential side wall of the frame.

6. The shielding cover according to claim 1, wherein: A plurality of the second limiting protrusions are arranged at intervals along the circumference of the cover body at the edge of the top wall of the cover body, the top limiting surface is arranged along the circumference of the frame and is connected to the circumferential side wall of the frame, and a plurality of the limiting holes are arranged on the top limiting surface.

7. The shielding cover according to claim 1, wherein: The inner diameter of the limiting hole is greater than or equal to the outer diameter of the second limiting protrusion, and the top wall of the cover body is in contact with the top limiting surface.

8. The shielding cover according to claim 1, wherein: The circumferential side wall of the cover body comprises a side wall upper portion and a side wall lower portion connected to each other, the side wall upper portion is connected to the top wall of the cover body, and a plurality of elastic clamping sheets are arranged on the side wall lower portion.

9. The shielding cover according to claim 8, characterized in that: A plurality of slits are provided at the lower part of the side wall, and the plurality of slits are arranged at intervals along the circumference of the cover body, and a plurality of sheet structures are formed between the plurality of slits, and the plurality of sheet structures are formed into a plurality of elastic clamping sheets by stamping and bending.

10. The shielding cover according to claim 1, wherein: The elastic clamping piece is formed into the first limiting protrusion by punching from the outer side to the inner side thereof; The second limiting protrusion is formed on the top wall of the cover body by punching from the outside to the inside.

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