CN216599691U

CN216599691U - Mobile phone, shielding case assembly and support piece

Info

Publication number: CN216599691U
Application number: CN202122737358.0U
Authority: CN
Inventors: 弟春红
Original assignee: Xi'an Zhongnuo Communication Co ltd
Current assignee: Xi'an Zhongnuo Communication Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-05-24
Anticipated expiration: 2031-11-09

Abstract

A mobile phone includes a cover body, a circuit board and a shield case; the circuit board is positioned between the inner side surface of the cover body and the shielding cover; the support piece is positioned between the circuit board and the shielding cover; the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting sheet is connected with the shielding case, and the supporting elastic sheet protrudes on the connecting sheet and abuts against the circuit board, so that a gap is formed between the circuit board and the shielding case. In addition, the utility model also provides a shielding case component and a supporting piece, compared with the prior art, the mobile phone, the shielding case component and the supporting piece control the gap between the circuit board and the shielding case through the protruding height of the supporting spring sheet on the connecting sheet, so that the gap is uniform and kept in the range of shielding and meeting the radio frequency requirement.

Description

Mobile phone, shielding case assembly and support piece

Technical Field

The utility model relates to the technical field of communication equipment, in particular to a mobile phone, a shielding case assembly and a supporting piece.

Background

Modern life is generally not available with mobile phones whose communication is mainly achieved by receiving radio waves. Different mobile phones respectively transmit/receive radio waves of different frequency bands, so that radio waves of a plurality of frequency bands exist in a space where we are located. Therefore, a certain mobile phone is likely to be interfered by radio waves in other frequency bands during communication, resulting in poor communication. The purpose of the shield cover is to reduce the influence of external electromagnetic waves on internal circuits and prevent electromagnetic waves generated inside from radiating outwards, so as to improve the communication quality.

The shield case is generally a case made of metal, and a circuit board (PCB) is located between the shield case and a cover body of the mobile phone to cover the circuit board on an inner wall of the cover body. However, the shield and the cover body cannot be completely sealed, and a certain distance needs to be kept to ensure normal radio frequency data transmission or reception. On the other hand, in the prior art, the shielding cover is generally mounted on the cover body by filling and bonding conductive foam or conductive adhesive or by seal welding. Although the shielding effect can be achieved in the above modes, the distance between the shielding cover and the cover body is difficult to control, the distance is too large to shield, the internal signal leakage and the external signal interference cannot be isolated, or the distance is too small to meet the radio frequency requirement. In addition, when using the cotton sealed of electrically conductive bubble, the electrically conductive bubble is cotton to drop inside the circuit board, causes the short circuit risk. When the conductive adhesive is used, the space of the electronic consumer product is limited, the filling width of the conductive adhesive is narrow, and the shielding case is easy to be assembled and deviated after being assembled, so that the sealing effect cannot be well achieved. When soldering is performed by solder paste or the like, soldering may be detached due to a large shield case, and inconvenience may be brought to maintenance.

SUMMERY OF THE UTILITY MODEL

Accordingly, an object of the present invention is to provide a mobile phone that realizes control of the size of the gap between the shield case and the cover.

The utility model is realized by the following technical scheme:

a mobile phone includes a cover, a circuit board and a shield case; the circuit board is positioned between the inner side surface of the cover body and the shielding cover; the support piece is positioned between the circuit board and the shielding case; the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting sheet is connected with the shielding case, and the supporting elastic sheet protrudes on the connecting sheet and abuts against the circuit board, so that a gap is formed between the circuit board and the shielding case.

Compared with the prior art, the mobile phone controls the gap between the circuit board and the shielding cover through the protruding height of the supporting spring plate on the connecting sheet, so that the gap is uniform and kept in a range which can shield and meet the radio frequency requirement.

Furthermore, the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to the surface of the connecting sheet back to the shielding case; the supporting end is provided with an outer side sheet surface which is abutted against the circuit board and is parallel to the connecting sheet surface, and the stable and uniform gap is ensured through the parallel sheet surfaces.

Furthermore, the distance from the outer side surface of the support end, which is abutted against the circuit board, to the shielding case is 5mm, so that the receiving of radio frequency signals is ensured.

Further, the shielding case comprises a top plate and a flange which is protruded on the surface of the top plate and extends along the edge of the top plate; the top surface of the flange faces the circuit board; the connecting sheet is attached to the top surface of the flange; along with the one-sided vertical direction projection of connecting piece, the connecting piece shape is rectangular frame, and its width is less than or equal to the wall thickness of flange to guarantee to support stably.

Further, the lid the circuit board with the shield cover passes through the screwed connection, replaces the cotton or conductive adhesive of electrically conductive bubble or welded fixed mode, when preventing the short circuit of circuit board and improving the leakproofness, improves the convenience of maintenance.

Furthermore, the heat dissipation device also comprises a heat dissipation piece fixedly arranged on the top plate of the shielding cover, so that the deformation of the heat dissipation piece when the heat dissipation piece is independently arranged on the circuit board is reduced.

In addition, the utility model also provides a shielding case assembly, which has the following technical scheme:

a shield assembly comprising a shield and a support; the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting piece is connected with the side face, facing the circuit board, of the shielding cover, and the supporting elastic piece protrudes towards the direction far away from the shielding cover on the connecting piece.

Compared with the prior art, the shielding cover assembly controls the gap between the circuit board and the shielding cover through the protruding height of the supporting elastic sheet on the connecting sheet, so that the gap is uniform and kept in a range which can shield and meet the radio frequency requirement.

Furthermore, the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to the surface of the connecting sheet, which is back to the shielding case; the outer side sheet surface of the supporting end is parallel to the connecting sheet surface, and the gap between the supporting end and the connecting sheet is 5mm, so that the shielding cover and the circuit board can be ensured to be uniform and stable in distance, and the receiving of radio frequency signals can be ensured.

In addition, the utility model also provides a supporting piece, and the technical scheme is as follows:

the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting sheet is used for being connected with the side surface of the shielding cover facing the circuit board; the supporting spring plate protrudes on the side face, back to the shielding case, of the connecting sheet.

Compared with the prior art, the supporting piece controls the gap between the circuit board and the shielding cover through the protruding height of the supporting elastic sheet on the connecting sheet, so that the gap is uniform and kept in a range which can shield and meet the radio frequency requirement.

Furthermore, the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to one side surface of the connecting sheet; the outer side sheet surface of the supporting end is parallel to the connecting sheet surface, and the gap between the supporting end and the connecting sheet is 5mm, so that the shielding cover and the circuit board can be ensured to be uniform and stable in distance, and the receiving of radio frequency signals can be ensured.

For a better understanding and practice, the utility model is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a partially exploded view of a mobile phone according to the present invention;

FIG. 2 is a front view of the shield assembly of the present invention;

FIG. 3 is a rear view of the shield of the present invention;

FIG. 4 is a cross-sectional view of the shield taken along line A-A of FIG. 3;

FIG. 5 is a front view of the support member of the present invention;

FIG. 6 is a partial enlarged view C of FIG. 5;

fig. 7 is a partial cross-sectional view of the support member taken along line B-B of fig. 5.

Detailed Description

Specifically, referring to fig. 1 and fig. 2, the mobile phone of the present invention includes a cover 10, a circuit board 20, a supporting member 30 and a shielding case 40. The cover 10 is closed to a mobile phone body (not shown), and since the cover 10 is mounted to the mobile phone body as a conventional arrangement in the prior art, it will not be described in detail here. The circuit board 20 is mounted on the inner side surface of the cover 10. The support 30 is located between the circuit board 20 and the shield case 40. The shielding cover 40 presses the supporting member 30 against a side of the circuit board 20 facing away from the cover 10, and covers the circuit board 20 for shielding, and the supporting member 30 separates the circuit board 20 from the shielding cover 40 by a certain distance. The cover 10, the circuit board 20 and the shield case 40 are respectively provided with coaxial screw holes (not labeled), and screws 100 are inserted into the screw holes to fix the cover 10, the circuit board 20, the support 30 and the shield case 40 together.

Referring to fig. 3 and 4, the shielding can 40 is a metal member and includes a top plate 410, a flange 420, a supporting block 430 and a screw hole 440. One side of the top plate 410 faces the circuit board 20, and is projected along a direction perpendicular to the surface of the top plate 410, and the top plate 110 is rectangular. The flange 420 is disposed on a surface of the top plate 110 facing the circuit board 20. The flange 120 extends around the top plate 110 along the edge of the top plate 110 and protrudes toward the circuit board 20, so that the shield case 40 is a hollow case with an opening at one side. The supporting block 430 is fixedly disposed on the flange 420, and extends to the outside of the shielding case 40 along a direction parallel to the top plate 410. The screw hole 440 is formed in the supporting block 430, and an axis of the screw hole, 440 is perpendicular to a plate surface of the top plate 410. Preferably, the number of the supporting blocks 430 is four or more, and the supporting blocks 430 are symmetrically distributed on both sides by using a straight line connecting midpoints of two short sides of the rectangular top plate 410 as a symmetry axis, as a projection in a direction perpendicular to the plate surface of the top plate 410. Further, a groove 450 is formed on the surface of the top plate 110, and the groove 450 is formed on the surface of the top plate 410 facing or facing away from the circuit board 20. A heat dissipation member 460 is fixedly disposed in the groove 450, that is, the heat dissipation member 460 is located on the surface of the top plate 410 facing the circuit board 20, or on the surface of the top plate 410 facing away from the circuit board 20. The heat sink 460 is disposed on the shield case 40, so as to reduce deformation of the heat sink caused by separately disposing the heat sink on the circuit board 20 in the prior art. Preferably, the heat dissipation member 160 is an SM ultra-thin heat pipe or a graphite sheet.

Referring to fig. 5 to 7, the supporting member 30 is fixed on the top surface 421 of the flange 420 opposite to the top plate 410 by laser welding or pressing. The support 30 includes a connecting piece 310 and a support spring 320. The connecting piece 310 is a sheet, and a side surface of the connecting piece is attached to the top surface 421. Projected in a direction perpendicular to the surface of the top plate 110, the connecting piece 310 is shaped as a rectangular frame and covers the top surface 421, and the width L' thereof is less than or equal to the wall thickness L of the flange 420. The supporting spring 320 has a connecting end 321 and a supporting end 322. The connecting end 321 is connected with one side of the connecting sheet 310, and the supporting end 322 is separated from the connecting sheet 310 by a certain distance and is abutted against the circuit board 20 by the side facing away from the outer side of the connecting sheet 310. Under the supporting action of the supporting end 322, a certain distance H is formed between the circuit board 20 and the shielding case 40. The distance H between the shielding cover 40 and the circuit board 20 can be adjusted by adjusting the distance from the supporting end 322 to the connecting piece 310. In this embodiment, the outer side surface of the supporting end 322 is parallel to the top surface 421 and is connected to the board surface of the circuit board 20, so that the distance H between the circuit board 20 and the shielding case 40 is 5 mm; furthermore, the number of the supporting elastic sheets 320 is more than 4, the supporting elastic sheets are uniformly distributed on four sides of the rectangular frame formed by the connecting sheet 310 at intervals, the shielding cover 40 is connected with the supporting elastic sheets 320 through laser welding, a plurality of welding points O are arranged, the welding points O are positioned between the supporting elastic sheets 320, and the distances from the welding points O to the two adjacent supporting elastic sheets 320 are equal; further, the supporting member 30 is a beryllium copper member or a stainless steel member, and is formed by stamping at one time, so that the metal elasticity is better.

When in use, the side surface of one side of the connecting piece 310 and the top surface 421 are mutually attached and fixed to form a barrier cover assembly, and the supporting elastic piece 320 is protrudingly arranged on the side opposite to the shielding cover 40. The circuit board 20 is provided to the inner side surface of the cover 10. And (3) enabling the supporting elastic sheet 320 in the barrier cover assembly to face the circuit board 20 and cover the circuit board 20, aligning the screw holes, and screwing in screws to finish the installation.

Compared with the prior art, the mobile phone, the shielding case assembly and the supporting piece control the gap between the circuit board and the shielding case through the protruding height of the supporting elastic sheet on the connecting sheet, so that the gap is uniform and kept in a range which can shield and meet radio frequency requirements, and the stable, uniform and stable supporting of the gap can be ensured. And replace the cotton or conductive adhesive of electrically conductive bubble or welded fixed mode through threaded connection's mode, when preventing the short circuit of circuit board and improving the leakproofness, improve the convenience of maintenance. In addition, the heat dissipation member is arranged on the shielding cover instead, so that the deformation of the heat dissipation member when the heat dissipation member is arranged on the circuit board independently is reduced.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A mobile phone includes a cover, a circuit board and a shield case; the circuit board is positioned between the inner side surface of the cover body and the shielding cover; the method is characterized in that: the support piece is positioned between the circuit board and the shielding case; the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting sheet is connected with the shielding case, and the supporting elastic sheet protrudes on the connecting sheet and abuts against the circuit board, so that a gap is formed between the circuit board and the shielding case.

2. The mobile phone of claim 1, wherein: the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to the surface of the connecting sheet back to the shielding case; the supporting end is provided with an outer side sheet surface which is abutted against the circuit board and is parallel to the connecting sheet surface.

3. The mobile phone of claim 2, wherein: the distance from the outer side surface of the support end, which is abutted against the circuit board, to the shielding case is 5 mm.

4. The mobile phone of claim 2, wherein: the shielding cover comprises a top plate and a flange which protrudes on the surface of the top plate and extends along the edge of the top plate; the top surface of the flange faces the circuit board; the connecting sheet is attached to the top surface of the flange; and the connecting piece is in a rectangular frame shape along the projection in the direction vertical to the surface of the connecting piece, and the width of the connecting piece is less than or equal to the wall thickness of the flange.

5. The mobile phone of claim 4, wherein: the cover body, the circuit board and the shielding case are connected through screws.

6. The mobile phone of any of claims 1 to 5, wherein: the heat dissipation device also comprises a heat dissipation piece fixedly arranged on the top plate of the shielding cover.

7. A shield assembly, comprising: comprises a shielding case and a support; the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting piece is connected with the side face, facing the circuit board, of the shielding cover, and the supporting elastic piece protrudes towards the direction far away from the shielding cover on the connecting piece.

8. The shield assembly of claim 7, wherein: the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to the surface of the connecting sheet, which is back to the shielding case; the outer side sheet surface of the supporting end is parallel to the connecting sheet surface, and the gap between the outer side sheet surface of the supporting end and the connecting sheet is 5 mm.

9. A support member, characterized by: the supporting piece comprises a connecting piece and a supporting elastic piece; the connecting sheet is used for being connected with the side surface of the shielding cover facing the circuit board; the supporting spring plate protrudes on the side face, back to the shielding case, of the connecting sheet.

10. The support member according to claim 9, characterized in that: the supporting elastic sheet is provided with a connecting end and a supporting end; the connecting end is connected to one side surface of the connecting sheet; the outer side sheet surface of the supporting end is parallel to the connecting sheet surface, and the gap between the outer side sheet surface of the supporting end and the connecting sheet is 5 mm.