CN203839617U - Elastic arm structure of shielding housing - Google Patents

Abstract

The utility model provides an elastic arm structure of a shielding housing. An accommodating space for receiving a preset insulation seat body is arranged in the shielding housing, the shielding housing is provided with an opening for a preset plug to plug in at one side of the accommodating space, the shielding housing is provided with more than one positioning elastic buckle capable of relatively butting against a plurality of buckle holes in a metal shielding housing of the plug on the upper wall surface and the lower wall surface adjacent to the opening, each positioning elastic buckle laterally extends to form a fin inclinedly extending inwards, a butting elastic arm extending backwards in a suspension manner is arranged in the center of the upper surface of the shielding housing in a sectional manner, and the two side surfaces are provided with contact spring sheets. When the preset plug is plugged into the shielding housing, positioning elastic buckles, fins, the contact spring sheets, and the butting elastic arm abut against the metal shielding housing of the preset plug, so that the upper, lower, left, and right surfaces of the shielding housing are contacted with the metal shielding housing in multiple points, and the conduction and grounding speed of the electromagnetic waves absorbed by the metal shielding housing can be accelerated, and thereby, the effect of the shielding housing on electromagnetic wave interference prevention is improved.

Description

The elastic arm structure of shield shell

Technical field

The utility model provides a kind of elastic arm structure of shield shell, the metallic shield shell that the fin that espespecially shield shell extends in each location snap-on and side thereof can contact default plug is simultaneously a location and increases in electrical contactly, and then promotes the effect that connector anti electromagnetic wave disturbs.

Background technology

Computer technology fast development now, desktop computer or notebook computer have been prevalent in each corner in society, and the prosperity of computer technology industry also makes peripheral equipment miscellaneous (as periphery products such as mouse, keyboard, modem, Digitizing plate, printers) also with big Chang Qi road, make computer internal host just must be equiped with the connector that numerous kinds is different, connect the joint of establishing various peripheral equipments, so that transmission electronic signal is as the use of controlling; Wherein, because of the prosperity of the network technology and the emergence of plug and play equipment, and make the connector of RJ45 and USB pattern become already the basic outfit of current desktop computer or notebook computer; But the development trend of computer strides forward towards light, thin, short, little direction now, and the usage space of computer inside is significantly dwindled thereupon.

Because connector is generally on the circuit board that is fixedly arranged on electronic product inside, but on circuit board because thering is other electronic component, along with computer inner space dwindles, to such an extent as to also crypto set more of electronic component on circuit board, the demand of accelerating in order to reach electronic product execution speed, the frequency that its integrated circuit produces must not improve gradually, therefore make electromagnetic interference (the Electro-magnetic Interference on circuit board, be called for short EMI) relatively improve, and high-frequency Electromagnetic Interference easily causes the malfunctioning of electronic product, affect the transmission quality of connector signal, and be detrimental to health, so conventionally all can cover metal screen case A (referring to Fig. 6) in connector outer rim, and be provided with grounding leg A1 in metal screen case A, and carry out in electrical contact or adhesive surface on circuit board with this grounding leg A1, as the effect of ground connection (Grounding) or electromagnetic protection (EMI suppression).

Common metal shield shell A is the metal shell B1 that utilizes elastic arm A2 contact plug B, allow the electromagnetic wave that metal shell B1 absorbs pass through elastic arm A2, grounding leg A1 guides ground connection, reach the effect of anti electromagnetic wave, but along with the increase of user's demand, the transmission speed of old USB2.0 connector cannot meet user's needs, dealer just develops and makes USB3.0 specification, its USB3.0 specification is in existing specification, to increase by row's plural terminals, but along with the increase of number of terminals, the electromagnetic interference phenomenon that each terminal is subject to exterior electrical components also increases thereupon, the situation that while causing data transmission, noise disturbs is very serious, be with, how to solve problem and disappearance that existing USB3.0 connector is subject to electromagnetic wave severe jamming, be the relevant manufacturer that is engaged in the industry and desire most ardently the direction place person that research improves.

Utility model content

Therefore, utility model designer is because above-mentioned problem and disappearance, be to collect related data, via in many ways assessing and considering, and to engage in the many years of experience of the industry accumulation, via constantly studying and revising, begin design this kind can promote the shield shell of anti electromagnetic wave interference effect elastic arm structure utility model patent be born.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of elastic arm structure of shield shell, it comprises shield shell and is positioned the insulating base frame in shield shell accommodation space, this insulating base frame is positioned with plural terminals group, and the butt end of plural terminals group is positioned at the opening part of accommodation space, the welding ends of this plural terminals group is exposed to outside shield shell, this shield shell is provided with more than one unsettled location snap-on at the upper lower wall surface of adjacent openings, two other opposing sidewalls in shield shell adjacent openings is respectively equipped with contact flat spring, it is characterized in that:

This shield shell has a more than one unsettled location snap-on the upper lower wall surface of adjacent openings is extended respectively forward, and this location snap-on end is provided with the pressure section of bending, has a fin of inwardly tiltedly stretching this location snap-on side is extended.

Wherein: this shield shell upper face center is cutd open the elastic arm that supports that is provided with unsettled extension backwards.

Wherein: this contact flat spring is provided with support division at movable end, and contact flat spring outside be thoroughly provided with the profile groove that the strain of contact flat spring space is provided.

Wherein: this shield shell is extended with grounding leg at two sidewalls.

Wherein: the vertical edge of this grounding leg is all provided with profile groove.

Wherein: this plural terminals group meets USB3.0 specification, and by contiguous shield shell opening part be sequentially provided be inwardly five with four plural butt ends that are arranged in parallel.

Compared with prior art, adopt the advantage the utlity model has of technique scheme to be: button hole and metallic shield case surface that the fin that utilizes shield shell to extend in each location snap-on and side thereof can contact on default plug are simultaneously a location and increase configuration in electrical contact, can make shield shell in limited space, be provided with location snap-on and the fin thereof of different directions and function, not only can be in the confined space better punch process, the grounding leg that also can be electrically connected at preinstalled circuit plate by shield shell is guided ground connection, owing to contacting between the two, conduction locate increase, just can reduce electromagnetism and involve the distance that High-frequency Interference is conducted on metallic shield shell, can promote the speed that electromagnetism involves High-frequency Interference conduction ground connection, effect, reduce the situation that electromagnetism involves High-frequency Interference generation noise, and then correctness while promoting connector data transmission, stability.In addition, this shield shell upper face center is cutd open the elastic arm that supports that is provided with unsettled extension backwards, two side faces is provided with contact flat spring, when making default plug insert shield shell, each contact flat spring, support the metallic shield case surface that elastic arm can be held in default plug, make top and the surface, left and right of shield shell be Multi-contact in the metallic shield shell of plug, so allow the contact area of shield shell and metallic shield shell increase, allow electromagnetic conduction of velocity be promoted, and then can reduce the situation of Electromagnetic Interference, producing noise when avoiding data transmission disturbs.

Brief description of the drawings

Fig. 1 is three-dimensional exploded view of the present utility model;

Fig. 2 is the three-dimensional exploded view of another angle of the utility model;

Fig. 3 is the sectional axonometric drawing of the utility model shield shell;

Fig. 4 is another sectional axonometric drawing of the utility model shield shell;

Fig. 5 is the side cutaway view of the utility model preferred embodiment;

Fig. 6 is the stereo appearance figure of existing structure.

Description of reference numerals: 1-shield shell; 10-accommodation space; 101-opening; 11-locates snap-on; 111-pressure section; 112-fin; 12-contact flat spring; 121-support division; 122-profile groove; 13-supports elastic arm; 131-contact site; 14-grounding leg; 141-profile groove; 2-insulating base frame; 21-terminal group; 211-welding ends; 212-butt end; 3-plug; 31-metallic shield shell; 311-button hole.

Embodiment

For reaching above-mentioned purpose and effect, the technological means that the utility model adopts and structure thereof, hereby draw and illustrate with regard to preferred embodiment of the present utility model that in detail its features and functions is as follows, understands completely in order to do profit.

Refer to Fig. 1, Fig. 2, Fig. 3, shown in Fig. 5, it is the utility model three-dimensional exploded view, the three-dimensional exploded view of another angle, the sectional axonometric drawing of shield shell, the side cutaway view of preferred embodiment, find out that by knowing shown in figure the elastic arm structure of this shield shell is the accommodation space 10 that is provided with a side tool opening 101 in shield shell 1, shield shell 1 also has a more than one unsettled location snap-on 11 in the upper lower wall surface of adjacent openings 101 is extended respectively forward, and location snap-on 11 is bent with pressure section 111 in end towards accommodation space 10, prolong and be also provided with the fin 112 of inwardly tiltedly stretching at location snap-on 11 sides, and two other opposing sidewalls of shield shell 1 adjacent openings 101 is for being respectively equipped with more than one contact flat spring 12, contact flat spring 12 is provided with support division 121 in movable end, and contact flat spring 12 outsides are provided with the profile groove 122 for its strain thoroughly, separately cut open and be provided with unsettled extension one backwards and support elastic arm 13 in shield shell 1 upper face center, this end is provided with the contact site 131 bending towards accommodation space 10, in addition, shield shell 1 is provided with the grounding leg 14 of contact preinstalled circuit plate in two sidewalls to downward-extension, and the vertical edge of each grounding leg 14 is all provided with the profile groove 141 that collection tin is used in the time being soldered to preinstalled circuit plate.

The accommodation space 10 of this shield shell 1 is for being equiped with insulating base frame 2, and in insulating base frame 2, be provided with the plural terminals group 21 that meets USB3.0 specification, plural terminals group 21 1 sides are provided with welding ends 211, and plural terminals group 21 opposite sides are sequentially provided with inwardly and are five, four the plural butt ends 212 that are arranged in parallel by contiguous shield shell 1 opening 101 places.

After this shield shell 1 is assembled with insulating base frame 2, just default plug 3 can be pegged graft by the opening 101 of shield shell 1, and make plural terminals group 21 data of carrying out in electrical contact of default plug 3 and insulating base frame 2, the transmission of power supply, its default plug 3 outsides are for being coated with metallic shield shell 31, and metallic shield shell 31 is respectively equipped with more than one button hole 311 corresponding to snap-on 11 end pressure section 111 positions, location in upper lower wall surface, in the time that default plug 3 inserts shield shell 1, shield shell 1 sets up more than one location snap-on 11 to be a location for utilizing the relative sticking position of pressure section 111 to fasten in the plural button hole 311 on default plug 3 metallic shield shells 31, and be difficult for slippage after default plug 3 is inserted, simultaneously, the fin 112 that each location snap-on 11 is inwardly tiltedly stretched towards side, because it is the passing path while docking towards plug 3 that fin 112 is set up direction, just can make fin 112 form the surperficial generation of metallic shield shell 31 and can increase the scraping state of electrical conduction, and in connector when docking, is produced effectively and multiple spot effectiveness in electrical contact, and can make shield shell 1 in limited space, be provided with location snap-on 11 and the fin 112 thereof of different directions and function, not only can in the confined space, better carry out punch process, the grounding leg 14 that also can be electrically connected at preinstalled circuit plate by shield shell 1 is guided ground connection, owing to contacting between the two, conduction locate increase, just can reduce electromagnetism and involve the distance that High-frequency Interference is conducted on metallic shield shell 31, can promote the speed that electromagnetism involves High-frequency Interference conduction ground connection, effect, reduce the situation that electromagnetism involves High-frequency Interference generation noise, and then correctness while promoting connector data transmission, stability.

Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, it is three-dimensional exploded view of the present utility model, the three-dimensional exploded view of another angle, the sectional axonometric drawing of shield shell, another sectional axonometric drawing of shield shell, the side cutaway view of preferred embodiment, by knowing shown in figure while finding out that this default plug 3 inserts shield shell 1, metallic shield shell 31 surfaces that the contact flat spring 12 that shield shell 1 two sides are set up is the default plug 3 of contact, and respectively locate snap-on 11 and locate the fin 112 that snap-on 11 is inwardly tiltedly stretched towards side, contact flat spring 12 and support the metallic shield shell 31 that elastic arm 13 all can contact plug 3, make the surface up and down of shield shell 1 be Multi-contact and electrically transmit in the metallic shield shell 31 of plug 3, after increasing metallic shield shell 31 electromagnetic wave absorptions, can guide ground connection part, due to the plural terminals group 21 of USB3.0 specification there is more number of terminals and transmission speed fast, its electromagnetism involves High-frequency Interference just can be strengthened, and absorbing the speed of noise, metallic shield shell 31 also can increase thereupon, and then the effect of lifting anti electromagnetic wave (EMI) interference, more can allow data transmission time, there is good quality.

More than illustrate the utility model just illustrative; and nonrestrictive, those of ordinary skill in the art understand, in the case of not departing from the spirit and scope that claim limits; can make many amendments, variation or equivalence, but within all falling into protection range of the present utility model.

Claims (6)

1. the elastic arm structure of a shield shell, it comprises shield shell and is positioned the insulating base frame in shield shell accommodation space, this insulating base frame is positioned with plural terminals group, and the butt end of plural terminals group is positioned at the opening part of accommodation space, the welding ends of this plural terminals group is exposed to outside shield shell, this shield shell is provided with more than one unsettled location snap-on at the upper lower wall surface of adjacent openings, two other opposing sidewalls in shield shell adjacent openings is respectively equipped with contact flat spring, it is characterized in that:

This shield shell has a more than one unsettled location snap-on the upper lower wall surface of adjacent openings is extended respectively forward, and this location snap-on end is provided with the pressure section of bending, has a fin of inwardly tiltedly stretching this location snap-on side is extended.

2. the elastic arm structure of shield shell according to claim 1, is characterized in that: this shield shell upper face center is cutd open the elastic arm that supports that is provided with unsettled extension backwards.

3. the elastic arm structure of shield shell according to claim 1, is characterized in that: this contact flat spring is provided with support division at movable end, and contact flat spring outside is provided with the profile groove that the strain of contact flat spring space is provided thoroughly.

4. the elastic arm structure of shield shell according to claim 1, is characterized in that: this shield shell is extended with grounding leg at two sidewalls.

5. the elastic arm structure of shield shell according to claim 4, is characterized in that: the vertical edge of this grounding leg is all provided with profile groove.

6. the elastic arm structure of shield shell according to claim 1, is characterized in that: this plural terminals group meets USB3.0 specification, and by contiguous shield shell opening part be sequentially provided be inwardly five with four plural butt ends that are arranged in parallel.