CN2519544Y - Optical transmission module - Google Patents

Abstract

The utility model relates to an optical transmission module group comprising a pair of external shells and a base held in the external shells. The base is provided with a soleplate, and a pair of side walls extending from the two sides of the soleplate. The side wall comprises a front side wall, a back side wall and a holding inserting slot. A plurality of downwards extending elastic sheets and an exterior grounding structure are opened on the external shell and can respectively form electric property contact with an optoelectronic diode held in the base, and an exterior telecommunication device. Therefore, the static charge accumulated in the optical transmission module group is safely educed to the exterior of the optical transmission module group.

Description

Light passes and connects module

[technical field]

The utility model relates to a kind of light that is applied to optical communication system and passes and connect module, refers to especially a kind ofly have the good earth structure and connect module so that the light of the electrostatic charge that quick drain is accumulated passes.

[background technology]

Light passes and to connect module in communication system, and normally as the device that carries out bidirectional data transfers between the photoelectricity connecting interface, it can accept the signal of telecommunication, and converts thereof into light signal and transfer out by optical fiber link; Equally, also can accept light signal, and be transmitted in the circuit after being converted to the signal of telecommunication.

The release shell fragment that existing light biography connects module mostly is integral type greatly and is arranged among the housing, the shell fragment of common this structure is made for the insulation material, therefore, when using this light biography to connect module, inner high speed, high-frequency circuit is easy to generate a large amount of electrostatic charge savings and connects in the module in the light biography, usually can only constitute the electrostatic charge ground connection discharging that to accumulate after the electric connection by electric connector and external conductive device (as: telecommunications switch housing), pass the transmission quality that connects electrical interface signals in the module to avoid influencing light.Yet, the discharging of electrostatic charge must depend on and forms multiple spot with the external conductive device and contact to reach and to guarantee the electrostatic charge quick drain, if only depend on the single-point of electric connector and external conductive device to electrically connect, and can't reach the requirement of fast electrostatic charge ground connection being discharged, finally still can influence light and pass the quality that connects electrical transmission in the module.

Wherein, light passes and connects module is with the usefulness of light-emitting diode as the light signal emission, the portions of light biography connects module and then adopts laser diode, and with examining the optical diode receiving optical signals and being converted to the signal of telecommunication, and existing diode package mostly is metal wrapping, when too much electrostatic charge concentrates on light-emitting diode or inspection optical diode shell, can influence the correctness of emission and received signal, even can produce noise and interference.

[summary of the invention]

The purpose of this utility model is to provide a kind of light with good earth structure to pass and connects module, and it forms multipoint earthing path quick drain and is accumulated in wherein electrostatic charge thereby this light passes the shell fragment that connects on the module shell and external ground structure.

The purpose of this utility model is achieved in that this light biography connects module and comprises a pair of shell body and a pedestal that is accommodated in wherein.The pair of sidewalls that this pedestal has a base plate and extends out from the base plate both sides, this sidewall comprise that a front side wall, a rear wall and one take in slot.Offer a plurality of shell fragments that stretch out and external ground structure on this shell body downwards, this shell fragment constitutes with photodiode among being accommodated in pedestal and contact, will accumulate electrostatic charge safety derivation on pedestal by the external ground structure again.

Compared with prior art, advantage of the present utility model is: this light passes and connects module and utilize the shell fragment on the shell contact with external electric T unit housing with photodiode respectively with the external ground structure, makes that being accumulated in the electrostatic charge that the light biography connects in the module is discharged rapidly to the outside.

[description of drawings]

Fig. 1 is that the utility model light passes the three-dimensional exploded view that connects module.

Fig. 2 is that the utility model light passes the stereogram that connects module pedestal part.

Fig. 3 is that light passes the part amplification stereogram that connects module pedestal part among Fig. 2.

Fig. 4 is that light passes the partial, perspective view that connects module among Fig. 1.

Fig. 5 is that Fig. 1 light passes the stereogram that connects module.

[embodiment]

Please refer to Fig. 1, the utility model light passes and to connect module is by a pedestal 1, a pair of metal release shell fragment 4 that is installed on pedestal 1 relative both sides and a pair ofly be installed on 71,72 compositions of dismountable housing on the pedestal.

Please together with reference to Fig. 2 and Fig. 3, this pedestal 1 is to be made by electric conducting material die casting, generally can be metal material, it comprises the rear wall 15 of a base plate 11, a pair of front side wall 13 that extends out from the both sides of base plate 11, a pair of notch cuttype structure and the connecting wall 14 of interconnect function together.This connecting wall 14 is to be extended and be formed on the cascaded surface 152 of rear wall 15 by front side wall 13, keep a segment distance with the plane at rear wall 15 places, be mounted thereon (detailed aftermentioned) so that metal discharges shell fragment 4, a madial wall 151 extends and forms space intervals and constitute with connecting wall 14 from rear wall 15 takes in slot 17.

One support 19 stretches upwards and combines with the inner surface of front side wall 13 from the central part of base plate 11, and pedestal 1 is divided into first half and latter half.Offering two bottoms on this support 19 respectively is semicircular otch 191.Support 21 that extends upward from base plate 11 is divided into two accommodation spaces 230,240 with the first half of pedestal 1, in order to take in inspection optical diode 51 and laser diode 52.Two pairs of fixing arms 130,131 (only showing a fixing arm among the figure) extend in accommodation space 230,240 respectively from the both sides of support 19 upper cuts 191 respectively.

One hollow posts 123 protrudes upward from base plate 11, to assemble the fixedly usefulness of lower house 72 as the cooperation screw, the inner surface of each rear wall 15 is provided with rank 25, a location, which is provided with a protuberance 27, in order to supporting printing board 3, offer a upright opening 270 on this protuberance 27, have a setting circle post 29 near the tail end place on these rank, location 25, can with corresponding installing hole 320 cooperations on the printed circuit board (PCB) 3.

There is a panel 20 front of this pedestal 1, and the width that the width of this panel 20 is defined greater than two front side walls 13 is in order to stop moving freely of cooperation housing 71,72 thereon.Offer a pair of opening 210,220 of taking on this panel 20, connect with accommodation space 230,240 respectively, with insertion interface as extraneous Optical fiber plug (scheming not show).

Pair of metal discharges shell fragment 4, and by the moulding of sheet metal integrated punching, it comprises a holding parts 41, and this holding parts is approximately with to take in slot 17 contour.One bend 42 link to each other with holding parts 41 and with its maintenance approximate vertical, it begins to narrow down with stepped transition gradually from the part that combines with holding parts 41, to alleviate the mechanical strength that metal discharges the suffered bending stress of shell fragment 4 and strengthens shell fragment, two grabs 43 from the both sides up and down of these bend 42 ends outwards bending stretch out, can be snapped in and be received light and pass on the guiding sliding rail frame or socket (not shown) of the external electric T unit that connects module.On the other hand shank 44 is also one-body molded and than bend 42 outwardly-bent certain angles with bend 42, and its surface has dentelation to increase frictional force and the sense of touch of user when the operation.Press handle portion 44, grab 43 breaks away from from the light received passes the draw-in groove of the guiding sliding rail frame of the external electric T unit that connects module or socket (not shown), and the light biography connects module and promptly can extract from exterior guiding sliding rail frame or socket.

Please refer to Fig. 1, this shell body is a metal material, is made of a upper shell 71 and a lower house 72.This upper shell 71 comprises the cover plate 77 of a tool rectangular shallow concave surface 710, offer a pair of rectangular channel 73 on its scrobicula face 710, stretch out a shell fragment 731 downwards from the one end respectively, this shell fragment 731 contacts with inspection optical diode 51 and laser diode 52 when photoelectricity time combination is inserted in the pedestal, and then the electrostatic charge on the diode is directed on the upper shell 71.The front end of upper shell 71 dashes and sets out a bow-shaped structural 715, then can contact formation ground connection with the guiding sliding rail frame of external electric T unit or the conducting position of socket.Two sidewalls 79 form downwards from the dual-side of cover plate 77, and the front end of each sidewall 79 offers a rectangular aperture 790, and when upper shell 71 was installed on the pedestal 1, the bend 42 that metal discharges shell fragment 4 exposed from opening 790 places with handle portion 44, as shown in Figure 5.One hole 721 is arranged on this lower house 72, with on the pedestal 1 among void column 123 corresponding, can be by a screw (not shown) and being connected with pedestal 1.Also dash at the front end of this lower house 72 and to set out an arc ground structure 725.Pair of flanges 730 protrudes upward from the dual-side of lower house 72.

The front end of this printed circuit board (PCB) 3 has two installing holes 310,320 near side edge, in order to cooperating with protuberance 27, the positioning cylinder 29 of pedestal 1 being retained on the pedestal, the periphery of installing hole 310,320 all is provided with conduction and partly and with ground path on the circuit board 3 is connected.One electric connector 6 assembles the tail end edge that is electrically connected at this printed circuit board (PCB) 5 with straddle type, offers a groove 350 on its tail end edge to make the usefulness of fool proof.

Please refer to Fig. 4 and Fig. 5, during assembling, in first installation steps, inspection optical diode 51 and laser diode 52 at first are welded in predetermined welding position on the printed circuit board (PCB) 3, and electric connector 6 is pegged graft is fixedly welded on the other end of printed circuit board (PCB) 3 with respect to diode again.

In second installation steps, printed circuit board (PCB) 3 is installed on correct position on the pedestal 1, and installing hole 310 is corresponding with the upright opening 270 on the protuberance 27, and installing hole 320 combines with positioning cylinder 29, at this moment, the conduction of installing hole 310,320 peripheries partly forms with pedestal 1 and contacts.Diode 51,52 then is positioned in the accommodation space 310,320.

The 3rd installation steps are taken in slot 17 with holding parts 41 insertions that metal discharges shell fragment 4.

The 4th installation steps are pushed to the flange 730 of lower house 72 and stopped by panel 20 along rear wall 15, installing hole 721 on it aligns with the hollow posts 123 on the pedestal 1, and fix it with screw, then the sidewall 79 with upper shell 71 slips into along rear wall 15, upper shell 71 promptly is installed on the pedestal 1, and metal discharges shell fragment 4 and stretches out from the opening 790 of upper shell 71.

Finish light pass connect the installation of module after, light passes and to connect the electrostatic charge that module produces and can be connected the connecting circuit that directly is discharged into the outside with the ground path of circuit board 3 via electric connector 6 respectively, be connected with the ground path of circuit board 3 through pedestal 1 and then can be discharged into housing 71,72, contact and discharged with external electric T unit housing via bow-shaped structural 715,725 and shell fragment 4 again.Therefore, the utility model light passes and to connect module and have five place's earth points electrostatic charge of being produced of quick drain module high speed circuit simultaneously at least.

Claims (9)

1. a light passes and connects module, being installed in one has among the telecommunication installation of grounding assembly, it comprises that a pedestal, a photodiode, a circuit board and make and be coated on the housing of this pedestal outside with the conductivity material, wherein this photodiode is with the encapsulation of conductivity material and is installed on pedestal, this circuit board is fixed in pedestal and constitutes electric connection with this photodiode, it is characterized in that: this housing is provided with at least one shell fragment and directly contacts with the photodiode formation of device in pedestal.

2. light as claimed in claim 1 passes and connects module, it is characterized in that further offering on this housing at least one bulge-structure that can contact formation ground connection with telecommunication installation.

3. light as claimed in claim 1 passes and connects module, it is characterized in that this light passes to connect to comprise an electric connector in the module, constitutes with the external electric T unit to electrically connect.

4. light as claimed in claim 1 passes and connects module, it is characterized in that this housing is made of two upper and lower casings that separate.

5. light as claimed in claim 4 passes and connects module, it is characterized in that at least one shell fragment is to be opened on the upper shell.

6. light as claimed in claim 1 passes and connects module, it is characterized in that at least one shell fragment is to stretch out in pedestal, and constitutes essence and contact with photodiode in being accommodated in pedestal.

7. light as claimed in claim 1 passes and connects module, it is characterized in that wherein having a reference column at least in this pedestal, and the ground path that is arranged on this circuit board can contact formation ground connection with this reference column.

8. light as claimed in claim 1 passes and connects module, it is characterized in that having at least one to discharge shell fragment, but wherein this release shell fragment can connect module among telecommunication installation with grounding assembly electric connection and this light biography of snap fit in this telecommunication installation.

9. light as claimed in claim 8 passes and connects module, it is characterized in that this pedestal further is provided with one and takes in slot, and this slot can be taken in and fix this release shell fragment.

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