CN201584523U

CN201584523U - USB grounding device

Info

Publication number: CN201584523U
Application number: CN2010201067951U
Authority: CN
Inventors: 肖建军; 薛永强
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd; Huawei Device Shenzhen Co Ltd
Priority date: 2010-01-27
Filing date: 2010-01-27
Publication date: 2010-09-15
Anticipated expiration: 2020-01-27

Abstract

The utility model discloses a USB grounding device which comprises a grounding shrapnel, a printed circuit board and a USB connector, wherein the grounding shrapnel is fixedly connected on the surface of the printed circuit board, grounded by a ground point of the printed circuit board and is contacted with the USB connector by a feed point arranged on the grounding shrapnel. In the USB grounding device, due to being fixedly connected on the surface of the PCB, the grounding shrapnel is not easy to deform, thus improving the grounding reliability and stability of the grounding shrapnel, and further improving the radio-frequency performance.

Description

The USB earthing device

Technical field

The utility model embodiment relates to communication technical field, particularly a kind of USB earthing device.

Background technology

Radio universal serial bus (Universal Serial Bus, be called for short: USB) modulator-demodulator (USBModem) is as the key equipment of mobile communication solution, make portable terminal be connected to the Internet by USB interface, for the terminal use, no matter be house or field work, can adopt Wireless USB Modem to insert general packet radio service (General Packet Radio Service, be called for short: GPRS) (3rd-generation is called for short: 3G) network for network and 3G (Third Generation) Moblie.

Fig. 1 is the structural representation of USB grounding apparatus of the prior art, as shown in Figure 1, USB grounding apparatus of the prior art comprises: screening cover 4, printed circuit board (Printed Circuit Board, be called for short: PCB) 5, USB 6, wherein, screening cover 4 is fixedly installed on the PCB5, and screening cover 4 stretches out ground connection shell foot 41 and USB 6 ground connection at the top of USB 6.In order to increase the radio-frequency performance of USB grounding apparatus, USB 6 and PCB5 be ground connection fully, depend merely on Flexible Printed Circuit (Flexible Printed Circuit but adopt, be called for short: FPC) ground connection can not satisfy the demands, and therefore also needs in the prior art screening cover 4 and USB 6 contacted ground connection.

The structure of prior USB grounding apparatus, because the rigging error of screening cover 4 is bigger, and in assembling process, in order to prevent 41 distortion of ground connection shell foot, need make screening cover 4 and USB the 6 precompressed amounts that contact big (length in reserve that is ground connection shell foot 41 is bigger), if the precompressed amount is too small, then USB grounding apparatus ground connection is unreliable, and radio-frequency performance can not meet the demands.

The utility model content

The utility model embodiment provides a kind of USB earthing device, improves the ground connection reliability of USB earthing device.

The utility model provides a kind of USB earthing device, comprise: grounding elastic part, printed circuit board, USB head, described grounding elastic part is fixed in the surface of described printed circuit board, and the earth point ground connection of passing through described printed circuit board, described grounding elastic part contacts with described USB head by the feedback point that is arranged on the described grounding elastic part.

The USB earthing device of the utility model embodiment because grounding elastic part is fixed in the surface of PCB, makes grounding elastic part be not easy to take place deformation, has improved the ground connection reliability and stability of grounding elastic part, has further improved radio-frequency performance.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of USB grounding apparatus of the prior art;

Fig. 2 is the structural representation of the utility model USB earthing device embodiment;

Fig. 3 is the position view of middle PCB2 embodiment illustrated in fig. 2 and grounding elastic part 1;

Fig. 4 be embodiment illustrated in fig. 2 in the position view of USB 3 and grounding elastic part 1;

Fig. 5 is a structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2;

Fig. 6 be embodiment illustrated in fig. 2 in USB 3 when retracted mode and the position view of PCB2;

Fig. 7 be embodiment illustrated in fig. 2 in USB 3 when retracted mode and the position view of grounding elastic part 1;

Fig. 8 is another structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2;

Fig. 9 is another structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2;

Figure 10 is middle grounding elastic part 1 embodiment illustrated in fig. 2 and the whole schematic diagram that encloses welding of PCB2;

Figure 11 is the schematic diagram of middle grounding elastic part 1 embodiment illustrated in fig. 2 and the welding of PCB2 half-turn.

Embodiment

Below by drawings and Examples, the technical scheme of the utility model embodiment is described in further detail.

Fig. 2 is the structural representation of an embodiment of the utility model USB earthing device, Fig. 3 is the position view of middle PCB2 embodiment illustrated in fig. 2 and grounding elastic part 1, Fig. 4 be embodiment illustrated in fig. 2 in the position view of USB 3 and grounding elastic part 1, Fig. 5 is a structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2, as Fig. 2～shown in Figure 5, this USB earthing device comprises: grounding elastic part 1, PCB2, USB 3, wherein, grounding elastic part 1 is fixed in the surface of PCB2, and the earth point ground connection by PCB2, grounding elastic part 1 contacts by feedback point 11 and the USB 3 that is arranged on the grounding elastic part 1.Because grounding elastic part 1 is fixed in the surface of PCB2, makes grounding elastic part 1 be not easy to take place deformation, has improved the ground connection reliability and stability of grounding elastic part 1, has further improved radio-frequency performance.Wherein, Fig. 3～grounding elastic part 1 shown in Figure 5 comprises the shell foot of dichotomous structure, and the shell foot of this dichotomous structure comprises three shell foots 13; For convenience, the utility model embodiment carries out exemplary illustration with the three dichotomous structures that comprise three shell foots 13, but does not constitute the restriction to the utility model embodiment.

Certainly, the shell foot of three dichotomous structures described in the utility model is not limited in above-mentioned form, as long as adopt described in the utility model by grounding elastic part being fixed in the surface of PCB, and the earth point ground connection by PCB, make the USB head can be on PCB the shell foot form of slip ground connection all in technical scheme described in the utility model.

As shown in Figure 3, shell foot in dichotomous structure comprises three shell foots 13, on three shell foots 13, be respectively arranged with feedback point 11, because good springiness, long service life, the ground connection dependable performance of the shell foot of dichotomous structure, and the shell foot of dichotomous structure can not influence the elasticity of USB 3 in sliding process, has promoted the feel of USB 3 in sliding process.As shown in Figure 4, because grounding elastic part 1 is fixed in the surface of PCB2, make grounding elastic part 1 be not easy to take place deformation, after USB 3 and grounding elastic part 1 CONTACT WITH FRICTION, further, therefore improved the ground connection reliability of grounding elastic part 1, further improved radio-frequency performance by the earth point ground connection of PCB2; In addition, the planform of the shell foot of dichotomous structure has been avoided two location holes 31 that the USB male cooperates with the USB female, thereby the shell foot that can prevent grounding elastic part 1 inserts in sliding process in the location hole 31 of USB 3 at USB 3.

In order to be more readily understood the described technical scheme of the utility model embodiment, below the structural relation in the utility model is described in detail, Fig. 6 be embodiment illustrated in fig. 2 in USB 3 when retracted mode and the position view of PCB2, Fig. 7 be embodiment illustrated in fig. 2 in USB 3 when retracted mode and the position view of grounding elastic part 1, carry out exemplary illustration below in conjunction with Fig. 2～Fig. 5.

Particularly, as Fig. 2～shown in Figure 5, when USB 3 stretches out PCB2, grounding elastic part 1 is by being arranged on the feedback point 11 and USB 3 CONTACT WITH FRICTION on the grounding elastic part 1, when USB 3 withdrawals, as shown in Figure 6 and Figure 7, grounding elastic part 1 is still by being arranged on the feedback point 11 and USB 3 CONTACT WITH FRICTION on the grounding elastic part 1, therefore grounding elastic part 1 contacts with grounding elastic part 1 in sliding process all the time, and grounding elastic part 1 adopts surface installation technique (Surface Mounted Technology, be called for short: SMT) be attached on the PCB2 all the time, guaranteed that USB 3 contacts with grounding elastic part 1 all the time in sliding process, because USB 3 is attached to the PCB2 surface all the time in the sliding friction process, make grounding elastic part 1 be not easy to take place deformation, and grounding elastic part 1 and USB 3 contacts, so the ground connection effect is reliable and stable, and also comparatively smooth and easy in sliding process.

Among the utility model embodiment, grounding elastic part can comprise single shell foot or dichotomous shell foot, if grounding elastic part comprises single shell foot, then this single shell foot is provided with the feedback point; If grounding elastic part comprises a plurality of shell foots with dichotomous structure, can be on a plurality of shell foots of dichotomous structure all or part of feedback point that is provided with, particularly, Fig. 8 is another structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2, and Fig. 9 is another structural representation of middle grounding elastic part 1 embodiment illustrated in fig. 2.As shown in Figure 8, grounding elastic part 1 comprises single shell foot 13, and this single shell foot 13 is provided with feedback point 11; As shown in Figure 9, grounding elastic part 1 comprises the shell foot 13 with dichotomous structure, is provided with feedback point 11 on the shell foot 13 of this dichotomous structure.

Figure 10 is the schematic diagram of middle grounding elastic part 1 embodiment illustrated in fig. 2 and the whole circle welding of PCB2, and Figure 11 is the schematic diagram of middle grounding elastic part 1 embodiment illustrated in fig. 2 and the welding of PCB2 half-turn.As shown in figure 10, grounding elastic part 1 comprises elastic sheet body 12 and shell foot 13, and wherein, shell foot 13 is dichotomous structure, and this dichotomous structure comprises three shell foots 13, and is provided with feedback point 11 on each shell foot 13; When grounding elastic part 1 adopts the mode of whole circle welding and PCB2 affixed, the elastic sheet body 12 of grounding elastic part 1 comprises main part 121, branch body portion 122, wherein divide body portion 122 and the junction of main part 121 and the junction complementation of shell foot 13 and main part 121, when adopting whole circle to weld, the main part 121 of elastic sheet body 12 and branch body portion 122 are all welded with PCB2, therefore effectively guaranteed weld strength, strengthened the structural strength of grounding elastic part 1, make grounding elastic part 1 add difficult distortion in man-hour, help controlling the flatness of elastic sheet body 12.As shown in figure 11, when grounding elastic part 1 adopts the mode of half-turn welding and PCB2 affixed, the elastic sheet body 12 of grounding elastic part 1 only comprises main part shown in Figure 10 121, when adopting the half-turn welding, because elastic sheet body 12 has only comprised main part 121, and main part 121 is welded with PCB2, and the area of elastic sheet body 12 reduces than the area of elastic sheet body shown in Figure 10 12, therefore can save the material of shell fragment under the prerequisite that guarantees weld strength.Certainly, also can according to actual needs the planar section of grounding elastic part be welded on the surface of PCB.

It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.

Claims

1. USB earthing device, it is characterized in that, comprise: grounding elastic part, printed circuit board, USB head, described grounding elastic part is fixed in the surface of described printed circuit board, and the earth point ground connection of passing through described printed circuit board, described grounding elastic part contacts with described USB head by the feedback point that is arranged on the described grounding elastic part.

2. USB earthing device according to claim 1 is characterized in that described grounding elastic part is welded on the surface of described printed circuit board.

3. USB earthing device according to claim 2 is characterized in that, whole circle welding of described grounding elastic part and described printed circuit board or half-turn welding.

4. USB earthing device according to claim 1 is characterized in that, described grounding elastic part contacts with described USB head by the feedback point that is arranged on the described grounding elastic part, the feedback point of described grounding elastic part can with described USB slide relative.

5. according to the arbitrary described USB earthing device of claim 1～4, it is characterized in that grounding elastic part comprises at least one shell foot, described feedback point is arranged on the described shell foot.

6. USB earthing device according to claim 5 is characterized in that, when described grounding elastic part comprised a plurality of shell foot, described a plurality of shell foots adopted dichotomous structure, is provided with described feedback point on described a plurality of shell foots.