CN2494078Y - Photoelectric signal converter - Google Patents
Photoelectric signal converter Download PDFInfo
- Publication number
- CN2494078Y CN2494078Y CN01242465U CN01242465U CN2494078Y CN 2494078 Y CN2494078 Y CN 2494078Y CN 01242465 U CN01242465 U CN 01242465U CN 01242465 U CN01242465 U CN 01242465U CN 2494078 Y CN2494078 Y CN 2494078Y
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- CN
- China
- Prior art keywords
- photoelectric signal
- signal converter
- circuit board
- pcb
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A photoelectric signal transducer comprises a shell, a light transmitting/receiving device, a base, a socket and a printed circuited board. The light transmitting/receiving device is arranged in the socket and is welded on the printed circuit board by a circuit lead wire, and the printed circuited board is fixed on the base by screws. The shell further comprises an upper shell and a lower shell, and the upper shell is fixed on the base and is combined with the block button of the lower shell, and then, the base, the socket and the printed circuited board are sealed therein.
Description
The utility model is a kind of photoelectric signal converter, refers to a kind of photoelectric signal converter that is applied to optical communication system especially.
Photoelectric signal converter is a kind of being applied in the optical communication system, and the device of bidirectional data transfers is provided between the light signal and the signal of telecommunication.It can be changed between electrical-optical or light-electric interface mutually, and promptly it accepts to convert thereof into light signal behind the signal of telecommunication, be sent in the optical fiber and transmit, otherwise it accepts to convert thereof into the signal of telecommunication behind the light signal, is sent in the dielectric and transmits.
For improving the reliability and the durability of photoelectric signal converter, for high frequency printed circuit board wherein, it is the core component of photoelectric signal converter, must be fixed on one has in the metal-back of electromagnetic shielding, and constitute good grounded circuit, can guarantee that high-frequency signal can or not be subjected to the influence of external electromagnetic waves to external circuit, prevent that simultaneously too much electrostatic charge is accumulated on the circuit board and photoelectric signal converter is caused damage.
United States Patent (USP) the 5th, 767 discloses a kind of photoelectric signal converter No. 999.It mainly comprises upper shell and lower house.High frequency printed circuit board places between this upper and lower casing, and it is by electric terminal corresponding be welded to connect of an end with electric connector, the other end with corresponding being welded to connect of electric terminal of two photoelectric cells with the upper and lower casing relative fixed.But, this patent is with fixing high frequency printed circuit board such as alignment pin, these alignment pins are many to be made by insulating material (as engineering plastics etc.), can't constitute good grounded circuit with high frequency printed circuit board, cover electric shell even be provided with, influence that also can only the shielded radio frequency signal, the electrostatic charge that is produced on the high-frequency circuit board will store on this circuit board, and the operating characteristics of photoelectric signal converter is impacted.
Another existing photoelectric signal converter sees also United States Patent (USP) Re.36820 number.The shell of this photoelectric signal converter is a rectangle box body structure; after printed circuit board (PCB) is placed on this box body; by injection encapsulant such as resin with circuit board holding in this box body structure; though this resin encapsulant can be protected and the fixing circuit board; but; this injection moulding packaging cost height, yield are low, and inconvenient photoelectric signal converter volume production makes, and this structure can't provide the function of suitable electromagnetic shielding of circuit board and ground connection under the high frequency situation.
In view of this, provide the preferable fixing circuit board of a kind of energy and to have a novel photoelectric signal converter of ground connection electro-magnetic screen function real in essential.
The photoelectric signal converter that the purpose of this utility model is to provide the preferable fixing circuit board of a kind of energy and has the good earth electro-magnetic screen function.
Technical characterictic of the present utility model is: it mainly comprises a light R-T unit, housing, pedestal, socket and printed circuit board (PCB).Light R-T unit be installed in the socket and by circuit lead and with the printed circuit board (PCB) welding, this printed circuit board (PCB) by retaining component and pedestal be fixed together, this housing is used for encapsulation base and circuit board, and housing is provided with ground strip.
Compared with prior art, the utlity model has following advantage: can be retained in the photoelectric signal converter housing circuit board is preferable, and this photoelectric signal converter has good ground connection electro-magnetic screen function, low cost of manufacture.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
Fig. 1 is the isometric exploded view of the utility model photoelectric signal converter.
Fig. 2 is the isometric exploded view of another angle of the utility model photoelectric signal converter.
Fig. 3 is the isometric exploded view of the another angle of the utility model photoelectric signal converter.
Fig. 4 is the assembled view of the utility model photoelectric signal converter.
Please refer to Fig. 1 to Fig. 3, it is the isometric exploded view of the utility model photoelectric signal converter 99.This photoelectric signal converter 99 mainly comprises a upper shell 1, lower house 2, pedestal 3, socket 4, printed circuit board (PCB) 5 and a light R-T unit 6.
This socket 4 is roughly a cuboid, comprises front end part 43 and rear end part 44.The overall dimension of this front end part 43 is bigger slightly than rear end part 44, therefore forms a cascaded surface in the junction of two parts, locatees upper shell 1 in order to restriction.Please refer to Fig. 3, this front end partly 43 offers two openings 41,42 that run through whole socket 4, partly 44 places can ccontaining light R-T unit 6 by the rear end for this two opening 41,42, and its part 43 places, forward end then can supply the optical fiber connector (figure does not show) to peg graft, with input and export light signal.This light R-T unit 6 comprises light emitting devices and optical pickup apparatus, normally semiconductor laser diode or light-emitting diode of this light emitting devices wherein, optical pickup apparatus is photodiode normally, and this light transmits and receives the rear portion of device and all stretches out many circuit leads 605 (detailed aftermentioned).These socket 4 rear ends partly offer a T type groove 441 (as shown in Figure 2) on 44 lower surfaces, be used for cooperating with the ad hoc structure of upper shell 1 (detailed aftermentioned), and its upper surface are provided with a pair of rectangular preiection 442.
See also Fig. 2 and Fig. 3, this printed circuit board (PCB) 5 is made up of wide 51 and narrow 52 of back before one, and its preceding wide 51 is provided with three location holes 511.The circuit lead 605 of this light R-T unit 6 is welded in preceding wide 51 of printed circuit board (PCB) 5, and with the Primary Location circuit board, in addition, the signal transmission between light R-T unit 6 and the circuit board 5 also realizes by this circuit lead 605.Back narrow 52 at printed circuit board (PCB) 5 is provided with row's electric terminal (golden finger) 520, electrically connects with an electric connector (not shown) by this electric terminal 520.
This pedestal 3 roughly is a rectangle housing; in order to settle protection printed circuit board (PCB) 5; its upper surface 31 is roughly a rectangular flat plate structure; offer three screws 312 on it; corresponding with three location holes 511 on the printed circuit board (PCB) 5 respectively; double-screw bolt 313 is extended in the lower end of each screw 312, and this screw 312 connects whole double-screw bolt 313.Pedestal 3 rear ends are a container 33, and a saddle 330 is stretched out in its bottom.During assembling, back narrow 52 of printed circuit board (PCB) 5 inserts in the container 33, and double-screw bolt 313 is pressed against on the printed circuit board (PCB) 5, and printed circuit board (PCB) 5 is supported in saddle 330 holders simultaneously, with fixed printed circuit board 5 preferably.Three retaining components, as screw 8 (only showing one among the figure) respectively the location hole 511 corresponding snap closes by printed circuit board (PCB) 5 in the screw 312 of pedestal 3 and printed circuit board (PCB) 5 is immobilizated on the pedestal 3, be appreciated that ground, this retaining component also can be and pedestal 3 integrated grabs, and joins with location hole 511 cards on the printed circuit board (PCB) 5.In addition, further offer two-screw counterbore 311 on the upper surface 31 of this pedestal 3, and on the two side 32 of pedestal 3, offer two ladder platforms 320 of each interval respectively, to join with the ad hoc structure card of lower house 2.
The upper surface 11 of upper shell 1 is the cover plate of shallow slot for the most area, two location holes 111 are arranged in the shallow slot, corresponding with the screw counterbore 311 on the pedestal 3 respectively, during assembling, two screws 7 are by location hole 111 and in the screw counterbore 311 of corresponding snap close on pedestal 3, and upper shell 1 is immobilizated on the pedestal 3.The front end of this upper surface 11 dashes and is provided with a pair of ground strip that is parallel to each other 113, between ground strip 113 and shallow slot, have two mutual parallel rectangular apertures 112, to cooperate with projection 442 on the socket 4, these upper shell both sides are extended a pair of front side wall 14, a pair of rear wall 12 and two pairs of elastic collets 13 respectively downwards.The bottom of each front side wall 14 bends respectively extends T shape folding hook 142 in opposite directions, can further reinforce being connected between socket 4 and the upper shell 1 by the buckle of this folding hook 142 and socket 4 bottom T connected in stars 441.In addition, further dash on each front side wall 14 and be provided with a ground strip 113.The tail end of each rear wall 12 close upper shell 1 bends respectively and extends one folding piece 121 in opposite directions, is snapped in the tail end of pedestal 3 during installation.This elastic collet 13 is a rectangle laminated structure, and its overall dimensions roughly slit 213 with lower house 2 is suitable, and the centre of each elastic collet 13 dashes and to be provided with a hangnail 131, and the one end links to each other with elastic collet 13, and the other end is given prominence to outwardly obliquely.During assembling, the lug 212 of lower house 2 snaps on the ladder platform 320 of pedestal 3, the elastic collet 13 of upper shell 1 joins hangnail 131 and rectangular aperture 211 cards by the slit 213 of lower house 2 simultaneously, and then will go up lower house and combine, circuit board 5, socket 4 and pedestal 3 are packaged in wherein (as shown in Figure 4).
In the aforesaid photoelectric signal converter 99, this pedestal 3 can be made in the die cast metal moulding, and printed circuit board (PCB) 5 can further be provided with conductive coating at these location hole 511 peripheries, this conductive coating can be connected with the grounded circuit of printed circuit board (PCB) 5, in the time of by screw 8 fixed printed circuit boards 5, make screw 8 constitute the grounded circuit of printed circuit board (PCB) 5 and the electric connection of pedestal 3, by the contacting of upper shell 1 and lower house 2 and pedestal 3, form this photoelectric signal converter 99 again to its outside grounded circuit.Owing to three location holes 511 and pedestal 3 and upper and lower casing 1,2 formed multipoint earthing loops, can avoid electrostatic charge to accumulate in printed circuit board (PCB) 5.
Claims (16)
1. photoelectric signal converter, comprise a light R-T unit, socket, printed circuit board (PCB) and at least one housing, light R-T unit comprises many circuit leads, this socket has an opening at least, light R-T unit is to be placed in this opening, and its circuit lead stretches out and electrically connects with printed circuit board (PCB) from opening, this printed circuit board (PCB) is provided with a plurality of location holes, it is characterized in that: this photoelectric signal converter further comprises a pedestal, at least one fastening assembly is by the location hole on the printed circuit board (PCB), and printed circuit board (PCB) is immobilizated on the pedestal, and this housing is packaged in printed circuit board (PCB) and pedestal wherein.
2. photoelectric signal converter as claimed in claim 1 is characterized in that this circuit lead folder is welded on the printed circuit board (PCB).
3. photoelectric signal converter as claimed in claim 1 is characterized in that this socket comprises front end part and rear end partly, constitutes a cascaded surface between two parts.
4. photoelectric signal converter as claimed in claim 3 is characterized in that the rear end of this socket partly comprises a lower surface, offers a T connected in star on it.
5. photoelectric signal converter as claimed in claim 1 is characterized in that this socket comprises a upper surface, which is provided with a pair of rectangular preiection.
6. photoelectric signal converter as claimed in claim 1 is characterized in that the location hole periphery on this printed circuit board (PCB) is provided with conductive coating.
7. photoelectric signal converter as claimed in claim 1 is characterized in that offering on this pedestal a plurality of screws, and is corresponding with the location hole on the printed circuit board (PCB) respectively.
8. photoelectric signal converter as claimed in claim 7 is characterized in that each screw lower end extends a double-screw bolt, and this screw connects whole double-screw bolt.
9. photoelectric signal converter as claimed in claim 8 is characterized in that this pedestal rear end has a container, and a saddle is stretched out in its bottom.
10. photoelectric signal converter as claimed in claim 9 it is characterized in that the some of this printed circuit board (PCB) inserts in the container, and this double-screw bolt is pressed against on the printed circuit board (PCB), and printed circuit board (PCB) is supported in saddle holder simultaneously.
11. photoelectric signal converter as claimed in claim 1 is characterized in that this pedestal includes the two side, offers the single order halfpace on each sidewall at least.
12. photoelectric signal converter as claimed in claim 1 is characterized in that this pedestal makes with electric conducting material.
13. photoelectric signal converter as claimed in claim 1 is characterized in that retaining component made by electric conducting material.
14., it is characterized in that this retaining component is a screw as claim 1 or 12 described photoelectric signal converters.
15. photoelectric signal converter as claimed in claim 12 is characterized in that this housing contacts with pedestal.
16. photoelectric signal converter as claimed in claim 12 is characterized in that this housing further is provided with at least one ground strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01242465U CN2494078Y (en) | 2001-06-28 | 2001-06-28 | Photoelectric signal converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01242465U CN2494078Y (en) | 2001-06-28 | 2001-06-28 | Photoelectric signal converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2494078Y true CN2494078Y (en) | 2002-05-29 |
Family
ID=33654215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01242465U Expired - Lifetime CN2494078Y (en) | 2001-06-28 | 2001-06-28 | Photoelectric signal converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2494078Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394710C (en) * | 2004-04-27 | 2008-06-11 | 财团法人工业技术研究院 | Photoelectric transmission module and manufacturing method thereof |
| CN101804452A (en) * | 2010-05-14 | 2010-08-18 | 苏州利达铸造有限公司 | Production method of 3G communication signal converter shell |
-
2001
- 2001-06-28 CN CN01242465U patent/CN2494078Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394710C (en) * | 2004-04-27 | 2008-06-11 | 财团法人工业技术研究院 | Photoelectric transmission module and manufacturing method thereof |
| CN101804452A (en) * | 2010-05-14 | 2010-08-18 | 苏州利达铸造有限公司 | Production method of 3G communication signal converter shell |
| CN101804452B (en) * | 2010-05-14 | 2011-10-05 | 苏州利达铸造有限公司 | Production method of 3G communication signal converter shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110628 Granted publication date: 20020529 |