CN2509631Y

CN2509631Y - Electronic apparatus of internal memory expanded groove cover with electromagnetic wave resisting purpose

Info

Publication number: CN2509631Y
Application number: CN 01266875
Authority: CN
Inventors: 庄伟宾
Original assignee: Compal Electronics Inc
Current assignee: Compal Electronics Inc
Priority date: 2001-10-29
Filing date: 2001-10-29
Publication date: 2002-09-04
Anticipated expiration: 2011-10-29

Abstract

The utility model relates to an electronic device of the ems memory expansion groove cover body which can prevent the electronic wave. The utility model comprises a shell and a cover body; the shell is provided with a circuit board; the circuit board is provided with an ems memory expansion groove and a plurality of earthing points in the round of the groove; the shell is provided with an opening in the position which is corresponding with the ems memory expansion groove; the cover is combined with the shell separately to seal the opening and is provided with a metal thin plate which is stuck in the inner side to make the metal thin plate have a plurality of connecting feet which are corresponding with the earthing points of the contact circuit. The utility model can reduce the material cost and the product cost, and has a good electromagnetic wave prevention effect.

Description

Electronic installation with memory expansion groove lid of anti electromagnetic wave effect

[technical field]

The utility model relates to a kind of electronic installation with memory expansion groove lid of anti electromagnetic wave effect, particularly relates to a kind ofly being applied in electronic installations such as notebook computer and making described lid have the effect of electromagnetic wave proof simultaneously.

[background technology]

Because portable electronic installations such as notebook computer, based on maneuverability and the convenience on using, its design all takes in towards characteristic compact, that be convenient for carrying use, so that its inner electronic package is considerably intensive so that fully dwindle occupation space on settling, therefore can change different spare parts voluntarily by the user bright lacking as desktop computer, yet in order to make notebook computer can further promote usefulness in the future, most structure that still remains with the expansion slot that is available for users to install additional in addition memory modules.

As shown in Figure 1, be the notebook computer that has the memory expansion slot with bottom-up modes of emplacement.Described notebook computer has a housing 1, the ccontaining circuit board 12 that is positioned with in the housing 1, and usually offer an opening 11 at the place, bottom of housing 1, make on circuit board 12 a designed memory expansion slot 121 just can be positioned at place near opening 11, can make an extra memory modules 13 to be plugged in the expansion slot 121 and then the original internal memory number of increase notebook computer by opening 11, in addition, also be provided with a lid 2 that just can seal opening 11, make lid 2 can be combined as a whole and then keep the complete outward appearance of housing 1 with housing 1.

And also must have the little requirement of volume because of the employed memory modules 13 of notebook computer, so under the more and more fast trend of the clock pulse speed of central processing unit running, memory modules 13 is by the SODIMM internal memory specification of existing pin 144pins, pin spacing 0.8mm, progressive DDRSODIMM internal memory specification to pin 200pins, pin spacing 0.6mm, therefore in the face of in the middle of the computing of high frequency like this, the guard technology of the Electromagnetic Interference (EMI) that is caused when solving memory modules 13 runnings more seems important.

As shown in Figure 2, with at present for the way of the Electromagnetic Interference that solves memory modules 13, it mainly is the prior on every side ground contact 122 that 26～32 places are arranged that designs that on circuit board 12, is positioned at expansion slot 121, and ground contact 122 can form a scolding tin pad, and is welded with small with the surface mount technology correspondence respectively and is on each ground contact 122 and protrude hook-shaped metal clips 123.Again as shown in Figure 3, because housing 1 and lid 2 all are covered with sheet metal 111 towards the medial surface of circuit board, 21 with the conductor as the induced electricity magnetic wave, make the sheet metal 111 of housing 1 form a bead 112 in opening 11 edges, the sheet metal 21 of lid 2 then forms several butt sheets 211 to circuit board 12 direction projectioies in edge, so after circuit board 12 assemblings are positioned in the housing 1, the metal clips 123 that respectively is welded on the circuit board 12 just can be connected on the bead 112, and when lid 2 makes up mutually with housing 1, the butt sheet 211 of lid 2 also is connected on the bead 112, like this, the sheet metal 21 of lid 2 can constitute the electromagnetic wave shield that electrically conducts mutually with the sheet metal 111 of housing 1, again by the metal clips 123 on the ground contact 122 that is welded on circuit board 12, can be with the sheet metal 21 of lid 2 with housing 1, the 111 electromagnetic wave guiding ground connection of being responded to when operating for memory modules reach the effect of eliminating Electromagnetic Interference.

But with above-mentioned way, the shortcoming below existing in the application of actual processing procedure:

One, cost of manufacture height: because in the middle of the processing procedure of circuit board 12, must increase metal clips 123 assemblies quite a lot, and also must increase the step that metal clips 123 is soldered to circuit board 12 on the processing procedure, not only material cost increases, and the program of welding also makes cost of manufacture improve.

Two, reliability is not good: because metal clips 123 is to protrude from circuit board 12 surfaces and form hook-shaped after being soldered to circuit board 12, therefore in processing procedure during walking circuit plate 12, hook-shaped metal clips 123 takes place with the situation that the mutual hook of outer deposits yields pulls quite easily, but the intensity of common metal shell fragment 123 is not high, in case pull with the foreign object hook and must cause metal clips 123 distortion or pull apart, can't effectively contact the sheet metal 111 of housing 1 medial surface after making circuit board 12 be assembled in the housing 1, cause the protection effect of Electromagnetic Interference to have a greatly reduced quality.

[utility model content]

The purpose of this utility model is to provide a kind of electronic installation with memory expansion groove lid of anti electromagnetic wave effect, its lid can be directly with the electromagnetic wave guiding ground connection of induction, use metal clips and reduce cost and improve the reliability of electromagnetic wave proof to exempt.

Electronic installation with memory expansion groove lid of anti electromagnetic wave effect of the present utility model, have a housing and a lid that combines with described housing, be characterized in: have an accommodation space in the described housing, be positioned with a circuit board in the described accommodation space, and described circuit board is provided with a memory expansion slot and several are positioned at the ground contact of described memory expansion slot periphery, and described housing is provided with an opening that is communicated with described accommodation space and appears for described memory expansion slot in the position of the described memory expansion slot of correspondence, and described lid seals described opening separably, described lid has the sheet metal that a medial surface and near described accommodation space is covered on described medial surface, described sheet metal also has several and extend the also pin of the ground contact position of corresponding described circuit board in accommodation space, so that described pin electrically contacts described corresponding ground contact.

[description of drawings]

Below by preferred embodiment and accompanying drawing the electronic installation with memory expansion groove lid of anti electromagnetic wave effect of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is a kind of schematic appearance with notebook computer of memory expansion groove lid.

Fig. 2 is the part member enlarged diagram of notebook computer described in Fig. 1, illustrate several metal clips that memory expansion slot periphery is set outward appearance and with the assembled relation of circuit board;

Fig. 3 is the partly side cross-sectional schematic of member of the assembling of notebook computer described in Fig. 1 back, and a circuit board, a metal clips, a housing and the mutual assembled relation of a lid are described;

Fig. 4 is the part member side cross-sectional schematic after the preferred embodiment assembling of electronic installation of the memory expansion groove lid with anti electromagnetic wave effect of the present utility model;

Fig. 5 is the inboard supine schematic appearance of a lid of the described preferred embodiment of Fig. 4.

[embodiment]

Consult Fig. 4, a preferred embodiment of the electronic installation of the memory expansion groove lid with anti electromagnetic wave effect of the present utility model is applied to a notebook computer, and described notebook computer comprises a housing 3 and a lid 4.

Has an accommodation space 30 in the described housing 3, be positioned with a circuit board 32 in the accommodation space 30, and circuit board 32 is provided with a memory expansion slot 321 and several are positioned at the ground contact 322 of memory expansion slot 321 peripheries, make each ground contact 322 form a scolding tin pad, and housing 1 is provided with an opening 31 in the position of corresponding memory expansion slot 321, make opening 31 can be communicated with accommodation space 30, expansion slot 321 is then revealed by opening 31, uses for a memory modules (not shown) grafting assembling.In addition, housing 3 is covered with sheet metal 311 towards the medial surface of accommodation space 30, and sheet metal 311 then forms a bead 312 at the peripheral region of opening 31.

Again simultaneously with reference to figure 5, described lid 4 is to make up with the sealing opening with housing 3 separably, and having a medial surface and near accommodation space 30, lid 4 pastes sheet metal 41 on medial surface, and sheet metal 41 also has several and extends in accommodation space 30 and the pin 411 of ground contact 322 positions of corresponding circuits plate 32 and the butt sheet 412 of corresponding bead 312 positions, in this example, pin 411 and butt sheet 412 be directly on sheet metal 41 punching out form.

As shown in Figure 4, in the combination and after making lid 4 sealing openings 31 mutually of lid 4 and housing 3, identical with previous constructions, the sheet metal 41 formed butt sheets 412 of lid 4 just contact the sheet metal 311 formed beads 312 of housing 3, make sheet metal 41 and the sheet metal 311 of housing 3 of lid 4 constitute the electromagnetic wave shield of mutual conduction.And the place different with previous constructions is, 411 of the sheet metal 41 formed pins of lid 4 can directly electrically contact corresponding ground contact 322, and then the electromagnetic wave that sheet metal 41 is responded to can be guided ground connection and be formed protective action.

Adopt design of the present utility model, in the middle of practical application, can obtain following advantage:

One, cost reduces: owing to exempted numerous metal clips 123 assemblies, in the middle of the processing procedure of circuit board 32, promptly save the processing procedure that metal assembly 123 is installed and welded, and only need keep the position of ground contact 322, still material cost does not reduce, relatively cost of manufacture also reduces, and the utility model only needs to stamp out butt sheet 412 simultaneously on the sheet metal 41 of lid 4 and pin 411 gets final product, and for the processing procedure of circuit board 32, cost of manufacture reduces many naturally.

Two, electromagnetic protection effect is better: because of no longer having hook-shaped metal clips 123 on the circuit board 32, easily do not pulled distortion so do not have the aforementioned metal shell fragment by hook, the puzzlement of fracture, and when lid 4 with after housing 3 combines, the sheet metal 41 formed pins 411 of lid 4 quite closely electrically contact with the ground contact 322 of circuit board 32 naturally, itself be integrally formed on the sheet metal 41 by lid 4 because of pin 411 again, make that the sheet metal 41 of lid 4 is more direct with the sheet metal 311 common electromagnetic wave shields that form of housing 3, jointlessly engage with ground contact 322, pass through the mode that metal clips engages with ground contact 322 indirectly compared to previous constructions, more direct effective on contact, prevent that the effect of Electromagnetic Interference is better.

Claims

1, a kind of electronic installation with memory expansion groove lid of anti electromagnetic wave effect has a housing and a lid that combines with described housing, it is characterized in that:

Has an accommodation space in the described housing, be positioned with a circuit board in the described accommodation space, and described circuit board is provided with a memory expansion slot and several are positioned at the ground contact of described memory expansion slot periphery, and described housing is provided with an opening that is communicated with described accommodation space and appears for described memory expansion slot in the position of the described memory expansion slot of correspondence, and described lid seals described opening separably, described lid has the sheet metal that a medial surface and near described accommodation space is covered on described medial surface, described sheet metal also has several and extend the also pin of the ground contact position of corresponding described circuit board in accommodation space, so that described pin electrically contacts described corresponding ground contact.