Shielding case

Abstract

The present disclosure relates to a shielding case, comprising a frame and a cover. The cover covers the frame, and the circumferential side wall of the cover surrounds the circumferential side wall of the frame; a plurality of elastic clamping pieces are formed on the circumferential side wall of the cover, the plurality of elastic clamping pieces are arranged at intervals in the circumferential direction of the cover, first limiting protrusions are further provided on the inner side surfaces of the elastic clamping pieces, and the first limiting protrusions can abut against the circumferential side wall of the frame by means of elastic restoring forces of the elastic clamping pieces; at least one second limiting protrusion is provided on the inner side surface of the top wall of the cover, the frame has a top limiting surface, and at least one limiting hole matching the at least one second limiting protrusion is formed in the top limiting surface. In the present disclosure, without the need for the provision of a locking structure in the circumferential direction, the mounting stability of the cover can still be ensured, the cover is prevented from falling off from the frame, and disassembly and assembly are easy, thereby facilitating the maintenance of a shielded part; moreover, the cover does not deform after disassembly, allowing the cover to be reused multiple times.

Description

Shielding cover TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and particularly, to a shielding cover. BACKGROUND

[0002] The circuit board, wire and electronic component in the electronic device will emit high-frequency electromagnetic waves when working, which will cause interference to the normal work of the electronic product.

[0003] In order to reduce the interference and radiation of electromagnetic waves, shielding devices are often used to cover the circuit board, wire and electronic component in the prior art to achieve the purpose of shielding electromagnetic waves. The existing shielding cover generally comprises a frame and a cover body. The frame is arranged on the circuit board. The side wall of the cover body is provided with a plurality of locking protrusions. The side wall of the frame is provided with a plurality of locking holes corresponding to the plurality of locking protrusions. After the cover body is installed on the frame, the locking protrusions are clamped into the locking holes, so that the cover body is stably assembled on the frame. SUMMARY

[0004] The inventor of the present disclosure finds that when the part covered by the shielding cover needs to be repaired, it is difficult for the locking protrusions to be pulled out of the locking holes, so that a large force needs to be applied to remove the cover body from the frame. In addition, due to the large force applied to the cover body, the cover body will be deformed after being removed 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 property of the shielding cover.

[0005] The purpose of the present disclosure 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-mentioned purpose of the present disclosure can be achieved by using the following technical scheme:

[0007] The present disclosure provides a shielding cover comprising a frame and a cover body. The cover body is arranged on the frame. 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 pieces. The plurality of elastic clamping pieces are arranged at intervals along the circumference of the cover body. The inner side surface of the elastic clamping piece is further provided with a first limiting protrusion. The first limiting protrusion can abut against the circumferential side wall of the frame by using the elastic recovery force of the elastic clamping piece. 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. A plurality of limiting holes are formed in the top limiting surface and matched with the plurality of second limiting protrusions.

[0008] In the embodiment of the present disclosure, the elastic clamping piece has an inner inclined portion. The inner inclined portion is arranged to extend and incline towards the 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 disclosure, the first limiting protrusion is arranged close to the bottom end of the inner inclined portion.

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

[0011] In an embodiment of the present disclosure, the elastic clamping piece further has a bending portion and an outer inclined portion, the outer inclined portion is arranged to extend and incline from top to bottom towards the 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.

[0012] In an embodiment of the present disclosure, a plurality of the second limiting protrusions are arranged at the edge portion of the top wall of the cover body along the circumferential direction of the cover body, the top limiting surface is arranged to surround along the circumferential direction of the frame and is connected with the circumferential side wall of the frame, and a plurality of the limiting holes are arranged on the top limiting surface.

[0013] In an embodiment of the present disclosure, 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 disclosure, the circumferential side wall of the cover body has a connected side wall upper portion and a side wall lower portion, the side wall upper portion is connected with the top wall of the cover body, and a plurality of the elastic clamping pieces are arranged at the side wall lower portion.

[0015] In an embodiment of the present disclosure, the side wall lower portion is provided with a plurality of slits arranged along the circumferential direction of the cover body, a plurality of sheet structures are formed between a plurality of the slits, and a plurality of the elastic clamping pieces are formed by stamping and bending a plurality of the sheet structures.

[0016] In an embodiment of the present disclosure, the elastic clamping piece is formed by stamping from the outer side to the inner side to form the first limiting protrusion, and the top wall of the cover body is formed by stamping from the outer side to the inner side to form the second limiting protrusion.

[0017] The present disclosure has the following features and advantages:

[0018] The shielding cover of the present disclosure does not need to be provided with a locking structure in the circumferential direction, and still can ensure the installation stability of the cover body, avoid the cover body from falling off the frame, and be easy to disassemble and assemble. When the cover body needs to be disassembled, 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, so that the cover body and the frame can be separated, thereby facilitating the maintenance of the shielded part, and the disassembled cover body will not be deformed, and the cover body can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some of the embodiments of the present disclosure, and all other drawings obtained by those of ordinary skill in the art based on these drawings without creative effort are within the protection scope of the present disclosure.

[0020] Fig. 1 is a schematic diagram of the shielding cover before assembly according to the present disclosure.

[0021] Fig. 2 is a schematic diagram of the shielding cover after assembly according to the present disclosure.

[0022] Fig. 3 is a partial cross-sectional view of the shielding cover after assembly according to the present disclosure.

[0023] Fig. 4 is a partial cross-sectional view of the cover according to the present disclosure.

[0024] Fig. 5 is a partial cross-sectional view of the frame according to the present disclosure.

[0025] In the drawings: 1, cover; 11, circumferential side wall; 111, upper part of side wall; 112, lower part of side wall; 12, top wall; 13, elastic clamping piece; 131, inner inclined part; 132, bent part; 133, outer inclined part; 14, first limiting protrusion; 15, second limiting protrusion; 16, gap; 2, frame; 21, circumferential side wall; 22, top limiting surface; 23, limiting hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present disclosure.

[0027] As shown in Figs. 1, 2 and 3, the present disclosure provides a shielding cover, which comprises a frame 2 and a cover 1, the cover 1 is covered on the frame 2, and the circumferential side wall 11 of the cover 1 surrounds the circumferential side wall 21 of the frame 2; the circumferential side wall 11 of the cover 1 is formed with a plurality of elastic clamping pieces 13, the plurality of elastic clamping pieces 13 are arranged at intervals along the circumference of the cover 1, the inner side of the elastic clamping piece 13 is provided with a first limiting protrusion 14, the first limiting protrusion 14 can abut against the circumferential side wall 21 of the frame 2 by the elastic recovery force of the elastic clamping piece 13; the inner side of the top wall 12 of the cover 1 is provided with a plurality of second limiting protrusions 15, the frame 2 has a top limiting surface 22, and a plurality of limiting holes 23 are formed in the top limiting surface 22 and matched with the plurality of second limiting protrusions 15.

[0028] The present disclosure is described with reference to the use state shown in FIGS. 1 and 2 for ease of description, but is not limited thereto. Specifically, the bottom of the frame 2 is welded and fixed on a circuit board and encloses the part of the circuit board that needs to be shielded, and then the cover 1 is covered on the frame 2 to form a shielding cover, so that the part of the circuit board that needs to be shielded is accommodated in the shielding cover. The shape of the cover 1 and the frame 2 includes but is not limited to the rectangle of the present embodiment, and can also be circular, triangular, trapezoidal or other shapes. In the present embodiment, the cover 1 and the frame 2 are both made of metal sheet, which is cut into a certain shape and then stamped into shape. As shown in FIG. 4, the elastic clamping piece 13 is formed by stamping from the outer side to the inner side to form the first limiting protrusion 14; the top wall 12 of the cover 1 is formed by stamping from the outer side to the inner side to form the second limiting protrusion 15.

[0029] The shielding cover of the present disclosure utilizes the elastic restoring force of the elastic clamping piece 13 to press the first limiting protrusion 14 tightly against the circumferential side wall 21 of the frame 2, thereby utilizing the friction between the first limiting protrusion 14 and the circumferential side wall 21 of the frame 2 to limit the movement of the cover 1 in the height direction H; by cooperating the limiting hole 23 with the second limiting protrusion 15, the movement of the cover 1 in the planar direction (including any direction in the plane such as the length direction L, the width direction W, etc.) is limited, and the stability of the elastic restoring force of each elastic clamping piece 13 is maintained, so that the stress between the circumferential side wall 11 of the cover 1 and the circumferential side wall 21 of the frame 2 is uniform.

[0030] Therefore, the present disclosure does not need to provide a locking structure in the circumferential direction, and still can ensure the installation stability of the cover 1, avoid the cover 1 from falling off the frame 2, and is easy to disassemble and assemble. When the cover 1 needs to be disassembled, only the upward pulling force needs to be applied to overcome the friction between the circumferential side wall 11 of the cover 1 and the circumferential side wall 21 of the frame 2, so that the cover 1 and the frame 2 can be separated, thereby facilitating the maintenance of the shielded part, and the disassembled cover 1 will not be deformed, and the cover 1 can be repeatedly used multiple times.

[0031] Of course, based on the characteristic of repeated use, if it is necessary to further improve the stability of the cover 1, the limiting force can be applied to the cover 1 in the height direction H by other parts around the cover 1 without increasing the fitting force of the cover 1 and the frame 2, to further improve the stability of the fitting of the cover 1 and the frame 2.

[0032] As shown in FIGS. 3 and 4, in the embodiment of the present disclosure, the elastic clamping piece 13 has an inner inclined portion 131, which is arranged to extend obliquely from top to bottom towards the inner side, and the first limiting protrusion 14 is arranged on the inner side surface of the inner inclined portion 131. After the cover 1 is assembled on the frame 2, the inner inclined portion 131 can be elastically deformed outwardly to generate an inward elastic restoring force, so that the first limiting protrusion 14 can be pressed tightly against the circumferential side wall 21 of the frame 2 by the inward elastic restoring force.

[0033] Specifically, the elastic clamping piece 13 further has a bending portion 132 and an outer inclined portion 133, the outer inclined portion 133 is arranged to extend downward and outward, the bottom end of the inner inclined portion 131 and the top end of the outer inclined portion 133 are connected through the bending portion 132, and the bending portion 132 abuts against the circumferential side wall 21 of the frame 2. By arranging the bending portion 132 and the outer inclined portion 133 and abutting the bending portion 132 against the circumferential side wall 21 of the frame 2, the elastic restoring force of the elastic clamping piece 13 can be increased, and the installation stability of the cover body 1 is further improved.

[0034] As shown in FIGS. 3 and 4, in order to enable the first limiting protrusion 14 to be subjected to greater elastic restoring force, in the embodiment of the present disclosure, the first limiting protrusion 14 is arranged close to the bottom end of the inner inclined portion 131. In addition, in order to avoid the outer elastic deformation of the inner inclined portion 131 being too large and easily causing the cover body 1 to be unable to rebound after long-term use, in the embodiment of the present disclosure, the protrusion height of the first limiting protrusion 14 is less than the spacing between the top end of the inner inclined portion 131 and the circumferential side wall 21 of the frame 2.

[0035] As shown in FIGS. 1, 4 and 5, in the embodiment of the present disclosure, a plurality of second limiting protrusions 15 are arranged on the edge portions of the top wall 12 of the cover body 1 along the circumference of the cover body 1, the top limiting surface 22 is arranged to surround the frame 2 along the circumference of the frame 2 and is connected to the circumferential side wall 21 of the frame 2, and a plurality of limiting holes 23 are arranged on the top limiting surface 22. By arranging the top limiting surface 22 to surround the frame 2 along the circumference of the frame 2 and connect to the circumferential side wall 21 of the frame 2, not only can a plurality of limiting holes 23 be arranged along the circumference of the frame 2, but also the structural stability of the frame 2 and the shielding effect of the shielding cover can be improved.

[0036] Specifically, the top wall 12 of the cover body 1 has two long sides arranged oppositely and two wide sides arranged oppositely, and a plurality of second limiting protrusions 15 are arranged on the edge portions close to the two long sides and the edge portions close to the two wide sides at intervals. 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 the embodiment, the inner diameter of the limiting hole 23 is equal to the outer diameter of the second limiting protrusion 15, the second limiting protrusion 15 can be closely matched with the limiting hole 23, and it is ensured that the cover body 1 will not move in the plane direction.

[0037] As shown in FIG. 1, FIG. 2 and FIG. 3, in the embodiments of the present disclosure, the circumferential side wall 11 of the cover body 1 has a side wall upper portion 111 connected with the top wall 12 of the cover body 1 and a side wall lower portion 112, and a plurality of elastic clamping pieces 13 are arranged on the side wall lower portion 112. By arranging the side wall upper portion 111 to be connected with the top wall 12 of the cover body 1 and arranging the plurality of elastic clamping pieces 13 on the side wall lower portion 112, even if the elastic clamping pieces 13 are slightly permanently deformed (i.e. the elastic clamping pieces 13 cannot fully rebound) after the cover body 1 is assembled for multiple times, the shielding effect of the shielding cover will not be affected. Specifically, the side wall lower portion 112 is provided with a plurality of slits 16, the plurality of slits 16 are arranged at intervals along the circumference of the cover body 1, a plurality of sheet structures are formed between the plurality of slits 16, and the plurality of sheet structures are formed into the plurality of elastic clamping pieces 13 by stamping and bending.

[0038] The above only describes several embodiments of the present disclosure, and those skilled in the art can make various modifications or changes to the embodiments of the present disclosure according to the disclosed content of the application without departing from the spirit and scope of the present disclosure.

Claims

1. A shield characterized by, The shielding cover comprises a frame and a cover body, the cover body is covered on the frame, and a circumferential side wall of the cover body surrounds a circumferential side wall of the frame; The circumferential side wall of the cover body is formed with a plurality of elastic clamping pieces, the plurality of elastic clamping pieces are arranged at intervals along the circumference of the cover body, an inner side surface of the elastic clamping piece is further provided with a first limiting protrusion, and the first limiting protrusion can abut against the circumferential side wall of the frame by using the elastic restoring force of the elastic clamping piece; An inner side surface of a top wall of the cover body is provided with a plurality of second limiting protrusions, and the frame has a top limiting surface, a plurality of limiting holes are formed in the top limiting surface and matched with the plurality of second limiting protrusions.

2. The shielding cover of claim 1, wherein The elastic clamping piece has an inner inclined portion, the inner inclined portion is arranged to extend and incline towards 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 of claim 2, wherein The first limiting protrusion is arranged close to the bottom end of the inner inclined portion.

4. The shielding cover of claim 2, wherein The protruding height of the first limiting protrusion is smaller than the distance between the top end of the inner inclined portion and the circumferential side wall of the frame.

5. The shielding cover of claim 2, wherein The elastic clamping piece further has a bending portion and an outer inclined portion, the outer inclined portion is arranged to extend and incline towards the outer side from top to bottom, 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 of claim 1, wherein The plurality of second limiting protrusions are arranged at intervals along the circumference of the top wall of the cover body at the edge portion of the top wall, the top limiting surface is arranged to surround along the circumference of the frame and is connected with the circumferential side wall of the frame, and the plurality of limiting holes are arranged on the top limiting surface.

7. The shielding cover of 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 abuts against the top limiting surface.

8. The shielding cover of claim 1, wherein The circumferential side wall of the cover body has a connected side wall upper portion and a side wall lower portion, the side wall upper portion is connected with the top wall of the cover body, and the plurality of elastic clamping pieces are arranged at the side wall lower portion.

9. The shielding cover of claim 8, wherein The side wall lower portion is provided with a plurality of slits, the plurality of slits are arranged at intervals along the circumference of the cover body, a plurality of sheet structures are formed between the plurality of slits, and the plurality of sheet structures are formed into the plurality of elastic clamping pieces through stamping and bending.

10. The shielding cover of claim 1, wherein The elastic clamping piece is formed with the first limiting protrusion through stamping from the outer side to the inner side; The top wall of the cover body is formed with the second limiting protrusion through stamping from the outer side to the inner side.

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