CN2514577Y - Shield for preventing electromagnetic interference of mobile telephone - Google Patents

Abstract

The utility model relates to a screening device of a mobile telephone for avoiding electromagnetic interference, comprising a lower framework and an upper cover, wherein the lower framework is arranged on a proper position of a circuit board in order to circle an electronic element which is required to be screened, a circular arc lower gap is disposed on the lower framework in order to duck the place which is unable to be arranged on the circuit board, and the lower gap is equipped with a sawtooth hem in order to be bent into a circular arc shape; the upper cover is movably joint with the lower framework; the position in the upper cover, which is corresponding to the lower gap, is also provided with an upper gap that has a sawtooth hem; and the sawtooth hem of the upper cover and the sawtooth hem of the lower framework employ the mode of mutually superposing at intervals, in order to reduce the interspace of the gap and achieve the screening effect of avoiding electromagnetic interference.

Description

The screening arrangement of the anti-electromagnetic interference of mobile phone

Technical field

The utility model relates to the screening arrangement of the anti-electromagnetic interference of a kind of mobile phone, especially refers to a kind of screening arrangement of taking into account integrality and shield effectiveness.

Background technology

The use of mobile phone is quite general now; almost arrived the degree of staff one machine; and mobile phone transmits with electromagnetic wave; but because surrounding enviroment have many instruments also can generate electromagnetic waves; cause distorted signals in order to prevent mobile phone to be subjected to other Electromagnetic Interference, the screening arrangement of anti-electromagnetic interference can be set on the circuit board of mobile phone usually.

See also Fig. 1, known mobile phone screening arrangement 10a is made up of a framework 11a and a lid 12a, this framework 11a solid welding is on the appropriate location of circuit board 20a, the electronic component 21a frame that will shield is lived, the frame 111a of this framework 11a forms through bending, and this frame 111a is provided with several buckle holes 112a; And lid 12a is made as the shape that matches with framework 11a, but its upper side is provided with several louvres 121a electronic component 21a heat radiation, the side 122a of lid 12a also forms and is provided with several buckle holes 123a via bending, this buckle hole 123a is located at the corresponding position of 112a, buckle hole with framework 11a, after lid 12a and framework 11a cover, the buckle hole 123a of this lid 12a just can align with the buckle hole 112a of framework 11a, and by fastener 13a lid 12a and framework 11a buckle is lived; Yet, the mobile phone casing fixed leg 30a owing to will dodge, the part of this screening arrangement 10a must being desired to dodge is set as circular shape, and the frame 111a of the side 122a of cover plate 12a and framework 11a can't be bent into circular-arc, so that this bending part must be emptied and cause space 14a, so, shield effectiveness will variation.

As from the foregoing, above-mentioned known mobile phone screening arrangement on reality is used, obviously has inconvenience and exists with shortcoming, can be improved.

Therefore, the design people improves thoughts on above-mentioned shortcoming, concentrates on studies and cooperates the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned shortcoming finally.

Summary of the invention

Main purpose of the present utility model is to provide a kind of mobile phone to prevent the screening arrangement of electromagnetic interference, and can dodge to be welded in the place of circuit board, takes into account the integrality and the shield effectiveness of screening arrangement.

In order to achieve the above object, the utility model provides the screening arrangement of the anti-electromagnetic interference of a kind of mobile phone, includes a underframe and a loam cake, and this underframe is arranged on the appropriate location of circuit board, the electronic component that will shield with the frame residence; This underframe is provided with the following breach of circular shape, can't be arranged on the place of circuit board to dodge, but circular-arc because of being bent into, so establish the sawtooth flanging at this time breach; This loam cake engages with underframe is movable, and also be provided with last breach with this time breach opposite position among the loam cake with sawtooth flanging, and the sawtooth flanging of this loam cake and the sawtooth flanging of underframe adopt interval intermeshing mode with minimizing breach space, and reach the shield effectiveness that prevents electromagnetic interference.

In order to make the auditor can further understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.

Description of drawings

Fig. 1 is the three-dimensional exploded view of known mobile phone screening arrangement.

Fig. 2 is a three-dimensional exploded view of the present utility model.

Fig. 3 is a side of the present utility model decomposing schematic representation.

Fig. 4 is a combination schematic diagram in side of the present utility model.

Fig. 5 is a three-dimensional combination figure of the present utility model.

Description of reference numerals:

10a: screening arrangement

11a: framework

111a: frame

112a: buckle hole

12a: lid

121a: louvre

122a: side

123a: buckle hole

13a: fastener

14a: space

20a: circuit board

21a: electronic component

30a: fixed leg

1: screening arrangement

11: underframe

111: the contact side plate

112: frame portion

1121: buckling body

113: the sawtooth flanging

12: loam cake

121: louvre

122: the sheet flanging

1221: the buckle hole

123: the sawtooth flanging

13: breach

131: following breach

132: go up breach

2: circuit board

21: electronic component

3: fixed leg

Embodiment

See also Fig. 2 to Fig. 5, the utility model provides the screening arrangement of the anti-electromagnetic interference of a kind of mobile phone, it is a screening arrangement 1, it comprises a underframe 11 and a loam cake 12, these underframe 11 solid weldings are on the appropriate location of circuit board 2, and with the electronic component 21 that the frame residence will shield, this underframe 11 comprises a contact side plate 111 and a frame portion 112, frame portion 112 is formed by the periphery extension bending downwards of contact side plate 111, and is provided with several buckling bodies 1121 in this frame portion 112; And loam cake 12 is set as the shape that matches with this underframe 11, its end face is provided with several louvres 121 can be for 21 heat radiations of the electronic component in the underframe 11, and the extension bending downwards of the end face of loam cake 12 periphery goes out several sheet flangings 122, and on these several sheet flangings 122, establish several buckle holes 1221, this buckle hole 1221 can with buckling body 1121 fastening of arranging in pairs or groups mutually, make loam cake 12 can with underframe 11 movable joints; Wherein, casing fixed leg 3 parts of desiring to dodge on underframe 11 are established the following breach 131 of a circular shape, but because frame portion 111 can't be bent into circular shape, so following breach 131 places in frame portion 112 establish sawtooth flanging 113, and also establish the last breach 132 of circular shape among the loam cake 12 with this time breach 131 corresponding positions, equally, 132 places establish sawtooth flanging 123 at last breach, in order to prevent that the gullet is excessive and influence shield effectiveness, so the sawtooth flanging 123 of loam cake 12 adopts mutual interval mode (as shown in Figures 3 and 4) with the sawtooth flanging of underframe 11 113, behind buckling body 1121 fastenings of loam cake 12 by buckle hole 1221 and underframe 11, formation one has the screening arrangement 1 (as shown in Figure 5) of circular shape breach 13, the sawtooth flanging 123 of loam cake 12 is understood the sawtooth flanging 113 interval intermeshings (as shown in Figure 4) with underframe 11, so can reduce the space of breach 13, and reach the shield effectiveness that prevents electromagnetic interference.

Form the screening arrangement of the anti-electromagnetic interference of mobile phone of the present utility model by above-mentioned forming, because the sawtooth flanging of underframe and the sawtooth flanging of loam cake be intermeshing at interval, reduce the space of breach, make the screening arrangement casing fixed leg of can not only dodging, can also reach the shield effectiveness that prevents electromagnetic interference, take into account the integrality and the shield effectiveness of screening arrangement.

In sum, the utility model is real circular-arc because of being bent into for improving known mobile phone screening arrangement, so that this bending part must be emptied and cause the space, make the rare novel practical novel product of problems such as its shield effectiveness variation, have novelty and progressive, meet the utility application requirement fully, so file an application according to Patent Law.

The above only is a possible embodiments of the present utility model, non-so promptly limit to claim of the present utility model, so the equivalent structure that uses the utility model specification and accompanying drawing content to do such as changes, and all in like manner all is contained in the claim scope of the present utility model.

Claims (1)

1. a mobile phone is prevented the screening arrangement of electromagnetic interference, it is characterized by: include:

One underframe is arranged on the appropriate location of circuit board, the electronic component that will shield with the frame residence; This underframe is provided with the following breach of circular shape, can't be arranged at the place of circuit board to dodge, and this time breach is provided with the sawtooth flanging so that be bent into circular shape; And

One loam cake, it engages with underframe is movable, and also establishes the last breach with sawtooth flanging with this time breach opposite position among the loam cake, and the sawtooth flanging of the sawtooth flanging of this loam cake and underframe adopts interval intermeshing mode to reduce the breach space.

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