CN2463978Y

CN2463978Y - Earth system of connector

Info

Publication number: CN2463978Y
Application number: CN 01203627
Authority: CN
Inventors: 张智凯
Original assignee: Xuande Co ltd
Current assignee: Xuande Co ltd
Priority date: 2001-02-21
Filing date: 2001-02-21
Publication date: 2001-12-05
Anticipated expiration: 2011-02-21

Abstract

The utility model discloses a grounding system of a connector. A penetrating hollow opening is formed on the bottom of an shell. A circuit board used for connecting with a plurality of terminals in a connector is arranged behind the connector covered by a casing. The bottom side of the circuit board is provided with a plurality of terminals. The casing downwards extends to form a grounding foot. The inner side of the back of the casing convexly extends to form a spring sheet which is elastically contacted with and stuck to a grounding point on the surface at the back part of the circuit board. When the connector and a shielding casing are combined, the grounding point of the circuit board at the back of the connector and the spring sheet can simultaneously present an elastic contact sticking state, which is favorable for releasing interference noise produced by the connector to a loop of the circuit board to carry out grounding.

Description

The earthing device of connector

The utility model provides a kind of earthing device of connector, when the metal shell of finger utilization shielding and connector make up especially, can be directly present elasticity and support the subsides state, carry out ground connection on the circuit board so that static and Electromagnetic Interference are released into by the grounding leg of shell by the earth point of tiltedly stretching shell fragment and connector back side wiring board in the shell.

Computer technology fast development now, and desktop computer or notebook computer have been prevalent in each corner in the society, the development trend of its computer is also strong towards calculation function, speed reaches the little direction of volume soon and strides forward, and the connector of computer inside also significantly dwindles thereupon, to comply with the development trend of computer, but connector is after dwindling, and quickening along with computer speed, promptly need consider the signal interference problem that its galvanomagnetic effect produces, and the reason that the noise that generally can influence connector disturbs is broadly divided into two major parts, one is from the Electromagnetic Interference around the connector, it two is the electrostatic interference of connector inside, just there is manufacturer to be covered with metal shell in the outer watch glasses of connector, yet, in patentee's the structurally improved novel patent of five No. three electric power connector socket the three or four July 1st, in its connector, the terminal medial extremity directly is butted on the contact of terminal base, and the rear side of terminal base is combined with the circuit board and the iron core of filter module, appearance in integral body is coated with the shell that anti electromagnetic wave disturbs again, this kind practice only can prevent external electromagnetic wave interference, can't solve the electrostatic interference problem in the connector simultaneously; See also again shown in Fig. 6,7, be existing three-dimensional exploded view and the three-dimensional exploded view behind local component composition, by also learning among the figure, this prior art is directly welded terminal base and is located on the circuit board, also only can prevent external electromagnetic wave interference, and can't solve the electrostatic interference problem in the connector simultaneously that above-mentioned like this two is existing for solving the electrostatic interference problem of connector, facility designs use with following two kinds of modes, and these two kinds of modes also have following shortcoming:

One, be directly the grounding leg of the electronic component of circuit board to be overlapped to housing, need add weldering one earth connection to housing after assembling again, this mode is comparatively inconvenience when assembling, and can increase processing cost.

Two, if other overlaps with conductive fabric, then need before assembling, earlier conductive fabric to be arranged in the earth point surface of circuit board, the method has also increased complexity and the cost in the assembling.

Main purpose of the present utility model is the shell fragment by shell body, when connector combines with screening can, can make the earth point of wiring board at the connector back side and shell fragment present elasticity simultaneously and support the subsides state, the jamming incoherent signal that is beneficial to that connector is produced is released in the loop of circuit board and carries out ground connection.

The purpose of this utility model is achieved in that a kind of earthing device of connector, the bottom of shell is formed with a saturating empty opening, shell covers the connector rear of covering and is provided with one and connects the wiring board of establishing for the plural terminals in the connector, and being provided with plural terminals in the wiring board bottom side, shell is extended with grounding leg downwards; This inboard, shell back side has protruded out a shell fragment, and shell fragment flexibly supports the earth point that is affixed on the wiring board rear surface.So that the jamming incoherent signal that connector produced is released in the grounded circuit of circuit board.

This shell is by a panel and a housing be combined into.

This panel is down L shaped shape.

This housing is the  word shape.

The upper cover plate tail end of this panel and side cover plate are provided with plural number and are the trip of J type downwards, and trip colludes to close in the hollow hole of the stator of the corresponding bonding station of housing and side plate and becomes one.

This shell fragment is tiltedly stretches shape, and its end is wound into an arc surface.

Upper cover plate two sides of this panel are provided with the banking stop of downward bending, and it is held in the inboard of housing two side plates.

The side cover plate of these panel two sides is close to the side plate inboard of housing.

The earthing device of the utility model connector applicable to using on the computer female connector, is compared the earthing device of traditional connector, and the key that the utility model can improve prior art is:

(1) after shell is assembled to connector, earth point on its wiring board shell fragment direct and shell is elasticity and supports the subsides state, carry out ground connection and static and Electromagnetic Interference can be conducted to by the shell place in the circuit board that presets the connector bottom, can save the step and the processing cost of assembling compared to prior art.

(2) not only can reduce cost, and need not install other earthing device additional, also need not increase the number of assembling steps of welding than prior art.

(3), by suitable circuit distribution, utilize the space in the time of can increasing the line design of general circuit plate, and circuit design is more prone to because the direct elasticity of shell fragment of shell contacts at the common earth point place that connects of electronic component institute of wiring board.

For reaching above-mentioned purpose and structure, technological means that the utility model adopts and effect, drawing now illustrates in detail that with regard to preferred embodiment of the present utility model its structure is as follows with function, in order to understanding fully.

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

Fig. 2 is the side cutaway view of the utility model before combination;

Fig. 3 is the side cutaway view of the utility model when combination;

Fig. 4 is the side cutaway view of the utility model when earth point touches shell fragment;

Fig. 5 is the side cutaway view of the utility model after combination;

Fig. 6 is the three-dimensional exploded view of prior art;

Fig. 7 is the three-dimensional exploded view of prior art behind local component composition.

See also shown in Fig. 1,2, be the three-dimensional exploded view and the side cutaway view before combination of the utility model shell, can find out that structure of the present utility model, its assembly comprise that shell 1 and connector 2 form by clear among the figure, with regard to the main device detailed description of this case as after; Wherein:

This shell 1 includes a panel 11 and a housing 12, and that panel 11 and housing 12 are all metal material is made, wherein this panel 11 is down L shaped shape, and protrude out two trips 1111 that are the J type downwards in cover plate 111 tail end places transversely, and be bent with banking stop 1112 under upper cover plate 111 2 side direction, each goes out a side cover plate 112 towards inner bending by panel 11 2 sides again; Its housing 12 is considered as generally being the bending body of  type by apical view in addition, and two sides all have side plate 121, and extend out two grounding legs 1211 by the bottom side end of side plate 121, housing 12 tops then are bent with a crosswise fixed sheet 122, and stator 122 is provided with the rolled shell fragment of stretching to declivity 1221, and all set up two hollow holes 1222 in side plate 121 front ends and stator 122 surfaces, penetrate and be held in the interior plate face place of hollow hole 1222 for the trip 1111 of panel 1.

Be provided with a storage tank 21 in this connector 2, its storage tank 21 rear sides have been inserted a wiring board 22, and the weldering of plural terminals 23 medial extremitys in the connector 2 is located on the wiring board 22, set up the earth point 221 of a metallic film again in wiring board 22 opposite side surfaces, for the shell fragment 1221 and the electric contact condition of earth point 221 formation of shell 1.

See also Fig. 1, shown in 2, the program of its unitary construction when assembling, at first connector 2 is placed in the panel 11 2 avris cover plates 112 of shell 1, again panel 11 and connector 2 are pushed side plate 121 places of housing 12 2 sides, earth point 221 on the wiring board 22 in this moment its connector 2 does not touch (as shown in Figure 3) with the shell fragment 1221 of the stator 122 of housing 12 as yet, again panel 11 is combined with housing 12, the shell fragment 1221 of its housing 12 upper fixed sheets 122 just touches the earth point 221 of wiring board 22 earlier, and form strain and make it to be close to the surface of earth point 221 (as Fig. 4, shown in 5), the lower plate face place that each trip 1111 of panel 11 is fastened on the relative hollow hole 1222 of housing 12 is fixed again, has promptly finished overall package of the present utility model.

Claims

1, a kind of earthing device of connector, the bottom of shell is formed with a saturating empty opening, shell covers the connector rear of covering and is provided with one and connects the wiring board of establishing for the plural terminals in the connector, and is provided with plural terminals in the wiring board bottom side, and shell is extended with grounding leg downwards; It is characterized in that: this inboard, shell back side has protruded out a shell fragment, and shell fragment is flexibly to being affixed on the earth point of wiring board rear surface, so that the jamming incoherent signal that connector produced is released in the grounded circuit of circuit board.

2, the earthing device of connector as claimed in claim 1 is characterized in that: this shell is by a panel and a housing be combined into.

3, the earthing device of connector as claimed in claim 2 is characterized in that: this panel is down L shaped shape.

4, the earthing device of connector as claimed in claim 2 is characterized in that: this housing is the  word shape.

5, the earthing device of connector as claimed in claim 2, it is characterized in that: the upper cover plate tail end of this panel and side cover plate are provided with plural number and are the trip of J type downwards, and trip colludes to close in the hollow hole of the stator of the corresponding bonding station of housing and side plate and becomes one.

6, the earthing device of connector as claimed in claim 1 is characterized in that: this shell fragment is tiltedly stretches shape, and its end is wound into an arc surface.

7, the earthing device of connector as claimed in claim 2 is characterized in that: upper cover plate two sides of this panel are provided with the banking stop of downward bending, and it is held in the inboard of housing two side plates.

8, the earthing device of connector as claimed in claim 2 is characterized in that: the side cover plate of these panel two sides is close to the side plate inboard of housing.